Commit | Line | Data |
---|---|---|
7b863bd5 | 1 | /* Random utility Lisp functions. |
9568e3d8 | 2 | Copyright (C) 1985, 86, 87, 93, 94, 95, 97, 98, 99, 2000, 2001, 02, 2003 |
57916a7a | 3 | Free Software Foundation, Inc. |
7b863bd5 JB |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
7 | GNU Emacs is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
4ff1aed9 | 9 | the Free Software Foundation; either version 2, or (at your option) |
7b863bd5 JB |
10 | any later version. |
11 | ||
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU Emacs; see the file COPYING. If not, write to | |
3b7ad313 EN |
19 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
20 | Boston, MA 02111-1307, USA. */ | |
7b863bd5 | 21 | |
18160b98 | 22 | #include <config.h> |
7b863bd5 | 23 | |
dfcf069d AS |
24 | #ifdef HAVE_UNISTD_H |
25 | #include <unistd.h> | |
26 | #endif | |
58edb572 | 27 | #include <time.h> |
dfcf069d | 28 | |
365fa1b3 AC |
29 | #ifndef MAC_OSX |
30 | /* On Mac OS X, defining this conflicts with precompiled headers. */ | |
31 | ||
7b863bd5 JB |
32 | /* Note on some machines this defines `vector' as a typedef, |
33 | so make sure we don't use that name in this file. */ | |
34 | #undef vector | |
35 | #define vector ***** | |
365fa1b3 AC |
36 | |
37 | #endif /* ! MAC_OSX */ | |
38 | ||
7b863bd5 JB |
39 | #include "lisp.h" |
40 | #include "commands.h" | |
a8283a4a | 41 | #include "charset.h" |
dec002ca | 42 | #include "coding.h" |
7b863bd5 | 43 | #include "buffer.h" |
f812877e | 44 | #include "keyboard.h" |
8feddab4 | 45 | #include "keymap.h" |
ac811a55 | 46 | #include "intervals.h" |
2d8e7e1f RS |
47 | #include "frame.h" |
48 | #include "window.h" | |
91b11d9d | 49 | #include "blockinput.h" |
d73c6532 | 50 | #if defined (HAVE_MENUS) && defined (HAVE_X_WINDOWS) |
dfcf069d AS |
51 | #include "xterm.h" |
52 | #endif | |
7b863bd5 | 53 | |
bc937db7 | 54 | #ifndef NULL |
dec002ca | 55 | #define NULL ((POINTER_TYPE *)0) |
bc937db7 KH |
56 | #endif |
57 | ||
bdd8d692 RS |
58 | /* Nonzero enables use of dialog boxes for questions |
59 | asked by mouse commands. */ | |
60 | int use_dialog_box; | |
61 | ||
2d8e7e1f RS |
62 | extern int minibuffer_auto_raise; |
63 | extern Lisp_Object minibuf_window; | |
dec002ca | 64 | extern Lisp_Object Vlocale_coding_system; |
2d8e7e1f | 65 | |
68732608 | 66 | Lisp_Object Qstring_lessp, Qprovide, Qrequire; |
0ce830bc | 67 | Lisp_Object Qyes_or_no_p_history; |
eb4ffa4e | 68 | Lisp_Object Qcursor_in_echo_area; |
b4f334f7 | 69 | Lisp_Object Qwidget_type; |
dec002ca | 70 | Lisp_Object Qcodeset, Qdays, Qmonths, Qpaper; |
7b863bd5 | 71 | |
3844ee44 RS |
72 | extern Lisp_Object Qinput_method_function; |
73 | ||
6cb9cafb | 74 | static int internal_equal (); |
49bdcd3e RS |
75 | |
76 | extern long get_random (); | |
77 | extern void seed_random (); | |
78 | ||
79 | #ifndef HAVE_UNISTD_H | |
80 | extern long time (); | |
81 | #endif | |
e0f5cf5a | 82 | \f |
7b863bd5 | 83 | DEFUN ("identity", Fidentity, Sidentity, 1, 1, 0, |
ddb67bdc | 84 | doc: /* Return the argument unchanged. */) |
e9d8ddc9 | 85 | (arg) |
7b863bd5 JB |
86 | Lisp_Object arg; |
87 | { | |
88 | return arg; | |
89 | } | |
90 | ||
91 | DEFUN ("random", Frandom, Srandom, 0, 1, 0, | |
e9d8ddc9 | 92 | doc: /* Return a pseudo-random number. |
47cebab1 GM |
93 | All integers representable in Lisp are equally likely. |
94 | On most systems, this is 28 bits' worth. | |
95 | With positive integer argument N, return random number in interval [0,N). | |
e9d8ddc9 MB |
96 | With argument t, set the random number seed from the current time and pid. */) |
97 | (n) | |
88fe8140 | 98 | Lisp_Object n; |
7b863bd5 | 99 | { |
e2d6972a KH |
100 | EMACS_INT val; |
101 | Lisp_Object lispy_val; | |
78217ef1 | 102 | unsigned long denominator; |
7b863bd5 | 103 | |
88fe8140 | 104 | if (EQ (n, Qt)) |
e2d6972a | 105 | seed_random (getpid () + time (NULL)); |
88fe8140 | 106 | if (NATNUMP (n) && XFASTINT (n) != 0) |
7b863bd5 | 107 | { |
4cab5074 KH |
108 | /* Try to take our random number from the higher bits of VAL, |
109 | not the lower, since (says Gentzel) the low bits of `random' | |
110 | are less random than the higher ones. We do this by using the | |
111 | quotient rather than the remainder. At the high end of the RNG | |
88fe8140 | 112 | it's possible to get a quotient larger than n; discarding |
4cab5074 | 113 | these values eliminates the bias that would otherwise appear |
88fe8140 EN |
114 | when using a large n. */ |
115 | denominator = ((unsigned long)1 << VALBITS) / XFASTINT (n); | |
4cab5074 | 116 | do |
99175c23 | 117 | val = get_random () / denominator; |
88fe8140 | 118 | while (val >= XFASTINT (n)); |
7b863bd5 | 119 | } |
78217ef1 | 120 | else |
99175c23 | 121 | val = get_random (); |
e2d6972a KH |
122 | XSETINT (lispy_val, val); |
123 | return lispy_val; | |
7b863bd5 JB |
124 | } |
125 | \f | |
126 | /* Random data-structure functions */ | |
127 | ||
128 | DEFUN ("length", Flength, Slength, 1, 1, 0, | |
e9d8ddc9 | 129 | doc: /* Return the length of vector, list or string SEQUENCE. |
47cebab1 | 130 | A byte-code function object is also allowed. |
f5965ada | 131 | If the string contains multibyte characters, this is not necessarily |
47cebab1 | 132 | the number of bytes in the string; it is the number of characters. |
e9d8ddc9 MB |
133 | To get the number of bytes, use `string-bytes'. */) |
134 | (sequence) | |
88fe8140 | 135 | register Lisp_Object sequence; |
7b863bd5 | 136 | { |
504f24f1 | 137 | register Lisp_Object val; |
7b863bd5 JB |
138 | register int i; |
139 | ||
140 | retry: | |
88fe8140 | 141 | if (STRINGP (sequence)) |
d5db4077 | 142 | XSETFASTINT (val, SCHARS (sequence)); |
88fe8140 EN |
143 | else if (VECTORP (sequence)) |
144 | XSETFASTINT (val, XVECTOR (sequence)->size); | |
b1f81fc5 JB |
145 | else if (SUB_CHAR_TABLE_P (sequence)) |
146 | XSETFASTINT (val, SUB_CHAR_TABLE_ORDINARY_SLOTS); | |
88fe8140 | 147 | else if (CHAR_TABLE_P (sequence)) |
64a5094a | 148 | XSETFASTINT (val, MAX_CHAR); |
88fe8140 EN |
149 | else if (BOOL_VECTOR_P (sequence)) |
150 | XSETFASTINT (val, XBOOL_VECTOR (sequence)->size); | |
151 | else if (COMPILEDP (sequence)) | |
152 | XSETFASTINT (val, XVECTOR (sequence)->size & PSEUDOVECTOR_SIZE_MASK); | |
153 | else if (CONSP (sequence)) | |
7b863bd5 | 154 | { |
7843e09c GM |
155 | i = 0; |
156 | while (CONSP (sequence)) | |
7b863bd5 | 157 | { |
f2be3671 | 158 | sequence = XCDR (sequence); |
7843e09c GM |
159 | ++i; |
160 | ||
161 | if (!CONSP (sequence)) | |
162 | break; | |
163 | ||
164 | sequence = XCDR (sequence); | |
165 | ++i; | |
166 | QUIT; | |
7b863bd5 JB |
167 | } |
168 | ||
f2be3671 GM |
169 | if (!NILP (sequence)) |
170 | wrong_type_argument (Qlistp, sequence); | |
171 | ||
172 | val = make_number (i); | |
7b863bd5 | 173 | } |
88fe8140 | 174 | else if (NILP (sequence)) |
a2ad3e19 | 175 | XSETFASTINT (val, 0); |
7b863bd5 JB |
176 | else |
177 | { | |
88fe8140 | 178 | sequence = wrong_type_argument (Qsequencep, sequence); |
7b863bd5 JB |
179 | goto retry; |
180 | } | |
a2ad3e19 | 181 | return val; |
7b863bd5 JB |
182 | } |
183 | ||
5a30fab8 RS |
184 | /* This does not check for quits. That is safe |
185 | since it must terminate. */ | |
186 | ||
187 | DEFUN ("safe-length", Fsafe_length, Ssafe_length, 1, 1, 0, | |
e9d8ddc9 | 188 | doc: /* Return the length of a list, but avoid error or infinite loop. |
47cebab1 GM |
189 | This function never gets an error. If LIST is not really a list, |
190 | it returns 0. If LIST is circular, it returns a finite value | |
e9d8ddc9 MB |
191 | which is at least the number of distinct elements. */) |
192 | (list) | |
5a30fab8 RS |
193 | Lisp_Object list; |
194 | { | |
195 | Lisp_Object tail, halftail, length; | |
196 | int len = 0; | |
197 | ||
198 | /* halftail is used to detect circular lists. */ | |
199 | halftail = list; | |
70949dac | 200 | for (tail = list; CONSP (tail); tail = XCDR (tail)) |
5a30fab8 RS |
201 | { |
202 | if (EQ (tail, halftail) && len != 0) | |
cb3d1a0a | 203 | break; |
5a30fab8 | 204 | len++; |
3a61aeb4 | 205 | if ((len & 1) == 0) |
70949dac | 206 | halftail = XCDR (halftail); |
5a30fab8 RS |
207 | } |
208 | ||
209 | XSETINT (length, len); | |
210 | return length; | |
211 | } | |
212 | ||
91f78c99 | 213 | DEFUN ("string-bytes", Fstring_bytes, Sstring_bytes, 1, 1, 0, |
e9d8ddc9 MB |
214 | doc: /* Return the number of bytes in STRING. |
215 | If STRING is a multibyte string, this is greater than the length of STRING. */) | |
216 | (string) | |
eaf17c6b | 217 | Lisp_Object string; |
026f59ce | 218 | { |
b7826503 | 219 | CHECK_STRING (string); |
d5db4077 | 220 | return make_number (SBYTES (string)); |
026f59ce RS |
221 | } |
222 | ||
7b863bd5 | 223 | DEFUN ("string-equal", Fstring_equal, Sstring_equal, 2, 2, 0, |
e9d8ddc9 | 224 | doc: /* Return t if two strings have identical contents. |
47cebab1 | 225 | Case is significant, but text properties are ignored. |
e9d8ddc9 MB |
226 | Symbols are also allowed; their print names are used instead. */) |
227 | (s1, s2) | |
7b863bd5 JB |
228 | register Lisp_Object s1, s2; |
229 | { | |
7650760e | 230 | if (SYMBOLP (s1)) |
c06583e1 | 231 | s1 = SYMBOL_NAME (s1); |
7650760e | 232 | if (SYMBOLP (s2)) |
c06583e1 | 233 | s2 = SYMBOL_NAME (s2); |
b7826503 PJ |
234 | CHECK_STRING (s1); |
235 | CHECK_STRING (s2); | |
7b863bd5 | 236 | |
d5db4077 KR |
237 | if (SCHARS (s1) != SCHARS (s2) |
238 | || SBYTES (s1) != SBYTES (s2) | |
239 | || bcmp (SDATA (s1), SDATA (s2), SBYTES (s1))) | |
7b863bd5 JB |
240 | return Qnil; |
241 | return Qt; | |
242 | } | |
243 | ||
0e1e9f8d | 244 | DEFUN ("compare-strings", Fcompare_strings, |
f95837d0 | 245 | Scompare_strings, 6, 7, 0, |
e9d8ddc9 | 246 | doc: /* Compare the contents of two strings, converting to multibyte if needed. |
47cebab1 GM |
247 | In string STR1, skip the first START1 characters and stop at END1. |
248 | In string STR2, skip the first START2 characters and stop at END2. | |
249 | END1 and END2 default to the full lengths of the respective strings. | |
250 | ||
251 | Case is significant in this comparison if IGNORE-CASE is nil. | |
252 | Unibyte strings are converted to multibyte for comparison. | |
253 | ||
254 | The value is t if the strings (or specified portions) match. | |
255 | If string STR1 is less, the value is a negative number N; | |
256 | - 1 - N is the number of characters that match at the beginning. | |
257 | If string STR1 is greater, the value is a positive number N; | |
e9d8ddc9 MB |
258 | N - 1 is the number of characters that match at the beginning. */) |
259 | (str1, start1, end1, str2, start2, end2, ignore_case) | |
0e1e9f8d RS |
260 | Lisp_Object str1, start1, end1, start2, str2, end2, ignore_case; |
261 | { | |
262 | register int end1_char, end2_char; | |
263 | register int i1, i1_byte, i2, i2_byte; | |
264 | ||
b7826503 PJ |
265 | CHECK_STRING (str1); |
266 | CHECK_STRING (str2); | |
0e1e9f8d RS |
267 | if (NILP (start1)) |
268 | start1 = make_number (0); | |
269 | if (NILP (start2)) | |
270 | start2 = make_number (0); | |
b7826503 PJ |
271 | CHECK_NATNUM (start1); |
272 | CHECK_NATNUM (start2); | |
0e1e9f8d | 273 | if (! NILP (end1)) |
b7826503 | 274 | CHECK_NATNUM (end1); |
0e1e9f8d | 275 | if (! NILP (end2)) |
b7826503 | 276 | CHECK_NATNUM (end2); |
0e1e9f8d RS |
277 | |
278 | i1 = XINT (start1); | |
279 | i2 = XINT (start2); | |
280 | ||
281 | i1_byte = string_char_to_byte (str1, i1); | |
282 | i2_byte = string_char_to_byte (str2, i2); | |
283 | ||
d5db4077 | 284 | end1_char = SCHARS (str1); |
0e1e9f8d RS |
285 | if (! NILP (end1) && end1_char > XINT (end1)) |
286 | end1_char = XINT (end1); | |
287 | ||
d5db4077 | 288 | end2_char = SCHARS (str2); |
0e1e9f8d RS |
289 | if (! NILP (end2) && end2_char > XINT (end2)) |
290 | end2_char = XINT (end2); | |
291 | ||
292 | while (i1 < end1_char && i2 < end2_char) | |
293 | { | |
294 | /* When we find a mismatch, we must compare the | |
295 | characters, not just the bytes. */ | |
296 | int c1, c2; | |
297 | ||
298 | if (STRING_MULTIBYTE (str1)) | |
2efdd1b9 | 299 | FETCH_STRING_CHAR_ADVANCE_NO_CHECK (c1, str1, i1, i1_byte); |
0e1e9f8d RS |
300 | else |
301 | { | |
d5db4077 | 302 | c1 = SREF (str1, i1++); |
0e1e9f8d RS |
303 | c1 = unibyte_char_to_multibyte (c1); |
304 | } | |
305 | ||
306 | if (STRING_MULTIBYTE (str2)) | |
2efdd1b9 | 307 | FETCH_STRING_CHAR_ADVANCE_NO_CHECK (c2, str2, i2, i2_byte); |
0e1e9f8d RS |
308 | else |
309 | { | |
d5db4077 | 310 | c2 = SREF (str2, i2++); |
0e1e9f8d RS |
311 | c2 = unibyte_char_to_multibyte (c2); |
312 | } | |
313 | ||
314 | if (c1 == c2) | |
315 | continue; | |
316 | ||
317 | if (! NILP (ignore_case)) | |
318 | { | |
319 | Lisp_Object tem; | |
320 | ||
321 | tem = Fupcase (make_number (c1)); | |
322 | c1 = XINT (tem); | |
323 | tem = Fupcase (make_number (c2)); | |
324 | c2 = XINT (tem); | |
325 | } | |
326 | ||
327 | if (c1 == c2) | |
328 | continue; | |
329 | ||
330 | /* Note that I1 has already been incremented | |
331 | past the character that we are comparing; | |
332 | hence we don't add or subtract 1 here. */ | |
333 | if (c1 < c2) | |
60f8d735 | 334 | return make_number (- i1 + XINT (start1)); |
0e1e9f8d | 335 | else |
60f8d735 | 336 | return make_number (i1 - XINT (start1)); |
0e1e9f8d RS |
337 | } |
338 | ||
339 | if (i1 < end1_char) | |
340 | return make_number (i1 - XINT (start1) + 1); | |
341 | if (i2 < end2_char) | |
342 | return make_number (- i1 + XINT (start1) - 1); | |
343 | ||
344 | return Qt; | |
345 | } | |
346 | ||
7b863bd5 | 347 | DEFUN ("string-lessp", Fstring_lessp, Sstring_lessp, 2, 2, 0, |
e9d8ddc9 | 348 | doc: /* Return t if first arg string is less than second in lexicographic order. |
47cebab1 | 349 | Case is significant. |
e9d8ddc9 MB |
350 | Symbols are also allowed; their print names are used instead. */) |
351 | (s1, s2) | |
7b863bd5 JB |
352 | register Lisp_Object s1, s2; |
353 | { | |
7b863bd5 | 354 | register int end; |
09ab3c3b | 355 | register int i1, i1_byte, i2, i2_byte; |
7b863bd5 | 356 | |
7650760e | 357 | if (SYMBOLP (s1)) |
c06583e1 | 358 | s1 = SYMBOL_NAME (s1); |
7650760e | 359 | if (SYMBOLP (s2)) |
c06583e1 | 360 | s2 = SYMBOL_NAME (s2); |
b7826503 PJ |
361 | CHECK_STRING (s1); |
362 | CHECK_STRING (s2); | |
7b863bd5 | 363 | |
09ab3c3b KH |
364 | i1 = i1_byte = i2 = i2_byte = 0; |
365 | ||
d5db4077 KR |
366 | end = SCHARS (s1); |
367 | if (end > SCHARS (s2)) | |
368 | end = SCHARS (s2); | |
7b863bd5 | 369 | |
09ab3c3b | 370 | while (i1 < end) |
7b863bd5 | 371 | { |
09ab3c3b KH |
372 | /* When we find a mismatch, we must compare the |
373 | characters, not just the bytes. */ | |
374 | int c1, c2; | |
375 | ||
2efdd1b9 KH |
376 | FETCH_STRING_CHAR_ADVANCE (c1, s1, i1, i1_byte); |
377 | FETCH_STRING_CHAR_ADVANCE (c2, s2, i2, i2_byte); | |
09ab3c3b KH |
378 | |
379 | if (c1 != c2) | |
380 | return c1 < c2 ? Qt : Qnil; | |
7b863bd5 | 381 | } |
d5db4077 | 382 | return i1 < SCHARS (s2) ? Qt : Qnil; |
7b863bd5 JB |
383 | } |
384 | \f | |
385 | static Lisp_Object concat (); | |
386 | ||
387 | /* ARGSUSED */ | |
388 | Lisp_Object | |
389 | concat2 (s1, s2) | |
390 | Lisp_Object s1, s2; | |
391 | { | |
392 | #ifdef NO_ARG_ARRAY | |
393 | Lisp_Object args[2]; | |
394 | args[0] = s1; | |
395 | args[1] = s2; | |
396 | return concat (2, args, Lisp_String, 0); | |
397 | #else | |
398 | return concat (2, &s1, Lisp_String, 0); | |
399 | #endif /* NO_ARG_ARRAY */ | |
400 | } | |
401 | ||
d4af3687 RS |
402 | /* ARGSUSED */ |
403 | Lisp_Object | |
404 | concat3 (s1, s2, s3) | |
405 | Lisp_Object s1, s2, s3; | |
406 | { | |
407 | #ifdef NO_ARG_ARRAY | |
408 | Lisp_Object args[3]; | |
409 | args[0] = s1; | |
410 | args[1] = s2; | |
411 | args[2] = s3; | |
412 | return concat (3, args, Lisp_String, 0); | |
413 | #else | |
414 | return concat (3, &s1, Lisp_String, 0); | |
415 | #endif /* NO_ARG_ARRAY */ | |
416 | } | |
417 | ||
7b863bd5 | 418 | DEFUN ("append", Fappend, Sappend, 0, MANY, 0, |
e9d8ddc9 | 419 | doc: /* Concatenate all the arguments and make the result a list. |
47cebab1 GM |
420 | The result is a list whose elements are the elements of all the arguments. |
421 | Each argument may be a list, vector or string. | |
4bf8e2a3 MB |
422 | The last argument is not copied, just used as the tail of the new list. |
423 | usage: (append &rest SEQUENCES) */) | |
e9d8ddc9 | 424 | (nargs, args) |
7b863bd5 JB |
425 | int nargs; |
426 | Lisp_Object *args; | |
427 | { | |
428 | return concat (nargs, args, Lisp_Cons, 1); | |
429 | } | |
430 | ||
431 | DEFUN ("concat", Fconcat, Sconcat, 0, MANY, 0, | |
e9d8ddc9 | 432 | doc: /* Concatenate all the arguments and make the result a string. |
47cebab1 | 433 | The result is a string whose elements are the elements of all the arguments. |
4bf8e2a3 MB |
434 | Each argument may be a string or a list or vector of characters (integers). |
435 | usage: (concat &rest SEQUENCES) */) | |
e9d8ddc9 | 436 | (nargs, args) |
7b863bd5 JB |
437 | int nargs; |
438 | Lisp_Object *args; | |
439 | { | |
440 | return concat (nargs, args, Lisp_String, 0); | |
441 | } | |
442 | ||
443 | DEFUN ("vconcat", Fvconcat, Svconcat, 0, MANY, 0, | |
e9d8ddc9 | 444 | doc: /* Concatenate all the arguments and make the result a vector. |
47cebab1 | 445 | The result is a vector whose elements are the elements of all the arguments. |
4bf8e2a3 MB |
446 | Each argument may be a list, vector or string. |
447 | usage: (vconcat &rest SEQUENCES) */) | |
e9d8ddc9 | 448 | (nargs, args) |
7b863bd5 JB |
449 | int nargs; |
450 | Lisp_Object *args; | |
451 | { | |
3e7383eb | 452 | return concat (nargs, args, Lisp_Vectorlike, 0); |
7b863bd5 JB |
453 | } |
454 | ||
f5965ada | 455 | /* Return a copy of a sub char table ARG. The elements except for a |
3720677d KH |
456 | nested sub char table are not copied. */ |
457 | static Lisp_Object | |
458 | copy_sub_char_table (arg) | |
e1335ba2 | 459 | Lisp_Object arg; |
3720677d KH |
460 | { |
461 | Lisp_Object copy = make_sub_char_table (XCHAR_TABLE (arg)->defalt); | |
462 | int i; | |
463 | ||
464 | /* Copy all the contents. */ | |
465 | bcopy (XCHAR_TABLE (arg)->contents, XCHAR_TABLE (copy)->contents, | |
466 | SUB_CHAR_TABLE_ORDINARY_SLOTS * sizeof (Lisp_Object)); | |
467 | /* Recursively copy any sub char-tables in the ordinary slots. */ | |
468 | for (i = 32; i < SUB_CHAR_TABLE_ORDINARY_SLOTS; i++) | |
469 | if (SUB_CHAR_TABLE_P (XCHAR_TABLE (arg)->contents[i])) | |
470 | XCHAR_TABLE (copy)->contents[i] | |
471 | = copy_sub_char_table (XCHAR_TABLE (copy)->contents[i]); | |
472 | ||
473 | return copy; | |
474 | } | |
475 | ||
476 | ||
7b863bd5 | 477 | DEFUN ("copy-sequence", Fcopy_sequence, Scopy_sequence, 1, 1, 0, |
7652ade0 | 478 | doc: /* Return a copy of a list, vector, string or char-table. |
47cebab1 | 479 | The elements of a list or vector are not copied; they are shared |
e9d8ddc9 MB |
480 | with the original. */) |
481 | (arg) | |
7b863bd5 JB |
482 | Lisp_Object arg; |
483 | { | |
265a9e55 | 484 | if (NILP (arg)) return arg; |
e03f7933 RS |
485 | |
486 | if (CHAR_TABLE_P (arg)) | |
487 | { | |
25c30748 | 488 | int i; |
e03f7933 RS |
489 | Lisp_Object copy; |
490 | ||
c8640abf | 491 | copy = Fmake_char_table (XCHAR_TABLE (arg)->purpose, Qnil); |
e03f7933 | 492 | /* Copy all the slots, including the extra ones. */ |
69b3a14b | 493 | bcopy (XVECTOR (arg)->contents, XVECTOR (copy)->contents, |
25c30748 KH |
494 | ((XCHAR_TABLE (arg)->size & PSEUDOVECTOR_SIZE_MASK) |
495 | * sizeof (Lisp_Object))); | |
e03f7933 | 496 | |
3720677d KH |
497 | /* Recursively copy any sub char tables in the ordinary slots |
498 | for multibyte characters. */ | |
499 | for (i = CHAR_TABLE_SINGLE_BYTE_SLOTS; | |
500 | i < CHAR_TABLE_ORDINARY_SLOTS; i++) | |
501 | if (SUB_CHAR_TABLE_P (XCHAR_TABLE (arg)->contents[i])) | |
e03f7933 | 502 | XCHAR_TABLE (copy)->contents[i] |
3720677d | 503 | = copy_sub_char_table (XCHAR_TABLE (copy)->contents[i]); |
e03f7933 RS |
504 | |
505 | return copy; | |
506 | } | |
507 | ||
508 | if (BOOL_VECTOR_P (arg)) | |
509 | { | |
510 | Lisp_Object val; | |
e03f7933 | 511 | int size_in_chars |
e22e4283 | 512 | = (XBOOL_VECTOR (arg)->size + BITS_PER_CHAR - 1) / BITS_PER_CHAR; |
e03f7933 RS |
513 | |
514 | val = Fmake_bool_vector (Flength (arg), Qnil); | |
515 | bcopy (XBOOL_VECTOR (arg)->data, XBOOL_VECTOR (val)->data, | |
516 | size_in_chars); | |
517 | return val; | |
518 | } | |
519 | ||
7650760e | 520 | if (!CONSP (arg) && !VECTORP (arg) && !STRINGP (arg)) |
7b863bd5 JB |
521 | arg = wrong_type_argument (Qsequencep, arg); |
522 | return concat (1, &arg, CONSP (arg) ? Lisp_Cons : XTYPE (arg), 0); | |
523 | } | |
524 | ||
2d6115c8 KH |
525 | /* In string STR of length LEN, see if bytes before STR[I] combine |
526 | with bytes after STR[I] to form a single character. If so, return | |
527 | the number of bytes after STR[I] which combine in this way. | |
528 | Otherwize, return 0. */ | |
529 | ||
530 | static int | |
531 | count_combining (str, len, i) | |
532 | unsigned char *str; | |
533 | int len, i; | |
534 | { | |
e50d9192 | 535 | int j = i - 1, bytes; |
2d6115c8 KH |
536 | |
537 | if (i == 0 || i == len || CHAR_HEAD_P (str[i])) | |
538 | return 0; | |
539 | while (j >= 0 && !CHAR_HEAD_P (str[j])) j--; | |
540 | if (j < 0 || ! BASE_LEADING_CODE_P (str[j])) | |
541 | return 0; | |
e50d9192 KH |
542 | PARSE_MULTIBYTE_SEQ (str + j, len - j, bytes); |
543 | return (bytes <= i - j ? 0 : bytes - (i - j)); | |
2d6115c8 KH |
544 | } |
545 | ||
546 | /* This structure holds information of an argument of `concat' that is | |
547 | a string and has text properties to be copied. */ | |
87f0532f | 548 | struct textprop_rec |
2d6115c8 KH |
549 | { |
550 | int argnum; /* refer to ARGS (arguments of `concat') */ | |
551 | int from; /* refer to ARGS[argnum] (argument string) */ | |
552 | int to; /* refer to VAL (the target string) */ | |
553 | }; | |
554 | ||
7b863bd5 JB |
555 | static Lisp_Object |
556 | concat (nargs, args, target_type, last_special) | |
557 | int nargs; | |
558 | Lisp_Object *args; | |
559 | enum Lisp_Type target_type; | |
560 | int last_special; | |
561 | { | |
562 | Lisp_Object val; | |
7b863bd5 JB |
563 | register Lisp_Object tail; |
564 | register Lisp_Object this; | |
565 | int toindex; | |
093386ca | 566 | int toindex_byte = 0; |
ea35ce3d RS |
567 | register int result_len; |
568 | register int result_len_byte; | |
7b863bd5 JB |
569 | register int argnum; |
570 | Lisp_Object last_tail; | |
571 | Lisp_Object prev; | |
ea35ce3d | 572 | int some_multibyte; |
2d6115c8 KH |
573 | /* When we make a multibyte string, we can't copy text properties |
574 | while concatinating each string because the length of resulting | |
575 | string can't be decided until we finish the whole concatination. | |
576 | So, we record strings that have text properties to be copied | |
577 | here, and copy the text properties after the concatination. */ | |
093386ca | 578 | struct textprop_rec *textprops = NULL; |
87f0532f KH |
579 | /* Number of elments in textprops. */ |
580 | int num_textprops = 0; | |
7b863bd5 | 581 | |
093386ca GM |
582 | tail = Qnil; |
583 | ||
7b863bd5 JB |
584 | /* In append, the last arg isn't treated like the others */ |
585 | if (last_special && nargs > 0) | |
586 | { | |
587 | nargs--; | |
588 | last_tail = args[nargs]; | |
589 | } | |
590 | else | |
591 | last_tail = Qnil; | |
592 | ||
ea35ce3d | 593 | /* Canonicalize each argument. */ |
7b863bd5 JB |
594 | for (argnum = 0; argnum < nargs; argnum++) |
595 | { | |
596 | this = args[argnum]; | |
7650760e | 597 | if (!(CONSP (this) || NILP (this) || VECTORP (this) || STRINGP (this) |
e03f7933 | 598 | || COMPILEDP (this) || BOOL_VECTOR_P (this))) |
7b863bd5 | 599 | { |
7b863bd5 JB |
600 | args[argnum] = wrong_type_argument (Qsequencep, this); |
601 | } | |
602 | } | |
603 | ||
ea35ce3d RS |
604 | /* Compute total length in chars of arguments in RESULT_LEN. |
605 | If desired output is a string, also compute length in bytes | |
606 | in RESULT_LEN_BYTE, and determine in SOME_MULTIBYTE | |
607 | whether the result should be a multibyte string. */ | |
608 | result_len_byte = 0; | |
609 | result_len = 0; | |
610 | some_multibyte = 0; | |
611 | for (argnum = 0; argnum < nargs; argnum++) | |
7b863bd5 | 612 | { |
ea35ce3d | 613 | int len; |
7b863bd5 | 614 | this = args[argnum]; |
ea35ce3d RS |
615 | len = XFASTINT (Flength (this)); |
616 | if (target_type == Lisp_String) | |
5b6dddaa | 617 | { |
09ab3c3b KH |
618 | /* We must count the number of bytes needed in the string |
619 | as well as the number of characters. */ | |
5b6dddaa KH |
620 | int i; |
621 | Lisp_Object ch; | |
ea35ce3d | 622 | int this_len_byte; |
5b6dddaa | 623 | |
dec58e65 | 624 | if (VECTORP (this)) |
ea35ce3d | 625 | for (i = 0; i < len; i++) |
dec58e65 KH |
626 | { |
627 | ch = XVECTOR (this)->contents[i]; | |
628 | if (! INTEGERP (ch)) | |
629 | wrong_type_argument (Qintegerp, ch); | |
cc531c44 | 630 | this_len_byte = CHAR_BYTES (XINT (ch)); |
ea35ce3d | 631 | result_len_byte += this_len_byte; |
2efdd1b9 | 632 | if (!SINGLE_BYTE_CHAR_P (XINT (ch))) |
ea35ce3d | 633 | some_multibyte = 1; |
dec58e65 | 634 | } |
6d475204 RS |
635 | else if (BOOL_VECTOR_P (this) && XBOOL_VECTOR (this)->size > 0) |
636 | wrong_type_argument (Qintegerp, Faref (this, make_number (0))); | |
ea35ce3d | 637 | else if (CONSP (this)) |
70949dac | 638 | for (; CONSP (this); this = XCDR (this)) |
dec58e65 | 639 | { |
70949dac | 640 | ch = XCAR (this); |
dec58e65 KH |
641 | if (! INTEGERP (ch)) |
642 | wrong_type_argument (Qintegerp, ch); | |
cc531c44 | 643 | this_len_byte = CHAR_BYTES (XINT (ch)); |
ea35ce3d | 644 | result_len_byte += this_len_byte; |
2efdd1b9 | 645 | if (!SINGLE_BYTE_CHAR_P (XINT (ch))) |
ea35ce3d | 646 | some_multibyte = 1; |
dec58e65 | 647 | } |
470730a8 | 648 | else if (STRINGP (this)) |
ea35ce3d | 649 | { |
06f57aa7 | 650 | if (STRING_MULTIBYTE (this)) |
09ab3c3b KH |
651 | { |
652 | some_multibyte = 1; | |
d5db4077 | 653 | result_len_byte += SBYTES (this); |
09ab3c3b KH |
654 | } |
655 | else | |
d5db4077 KR |
656 | result_len_byte += count_size_as_multibyte (SDATA (this), |
657 | SCHARS (this)); | |
ea35ce3d | 658 | } |
5b6dddaa | 659 | } |
ea35ce3d RS |
660 | |
661 | result_len += len; | |
7b863bd5 JB |
662 | } |
663 | ||
09ab3c3b KH |
664 | if (! some_multibyte) |
665 | result_len_byte = result_len; | |
7b863bd5 | 666 | |
ea35ce3d | 667 | /* Create the output object. */ |
7b863bd5 | 668 | if (target_type == Lisp_Cons) |
ea35ce3d | 669 | val = Fmake_list (make_number (result_len), Qnil); |
3e7383eb | 670 | else if (target_type == Lisp_Vectorlike) |
ea35ce3d | 671 | val = Fmake_vector (make_number (result_len), Qnil); |
b10b2daa | 672 | else if (some_multibyte) |
ea35ce3d | 673 | val = make_uninit_multibyte_string (result_len, result_len_byte); |
b10b2daa RS |
674 | else |
675 | val = make_uninit_string (result_len); | |
7b863bd5 | 676 | |
09ab3c3b KH |
677 | /* In `append', if all but last arg are nil, return last arg. */ |
678 | if (target_type == Lisp_Cons && EQ (val, Qnil)) | |
679 | return last_tail; | |
7b863bd5 | 680 | |
ea35ce3d | 681 | /* Copy the contents of the args into the result. */ |
7b863bd5 | 682 | if (CONSP (val)) |
2d6115c8 | 683 | tail = val, toindex = -1; /* -1 in toindex is flag we are making a list */ |
7b863bd5 | 684 | else |
ea35ce3d | 685 | toindex = 0, toindex_byte = 0; |
7b863bd5 JB |
686 | |
687 | prev = Qnil; | |
2d6115c8 | 688 | if (STRINGP (val)) |
87f0532f KH |
689 | textprops |
690 | = (struct textprop_rec *) alloca (sizeof (struct textprop_rec) * nargs); | |
7b863bd5 JB |
691 | |
692 | for (argnum = 0; argnum < nargs; argnum++) | |
693 | { | |
694 | Lisp_Object thislen; | |
093386ca | 695 | int thisleni = 0; |
de712da3 | 696 | register unsigned int thisindex = 0; |
ea35ce3d | 697 | register unsigned int thisindex_byte = 0; |
7b863bd5 JB |
698 | |
699 | this = args[argnum]; | |
700 | if (!CONSP (this)) | |
701 | thislen = Flength (this), thisleni = XINT (thislen); | |
702 | ||
ea35ce3d RS |
703 | /* Between strings of the same kind, copy fast. */ |
704 | if (STRINGP (this) && STRINGP (val) | |
705 | && STRING_MULTIBYTE (this) == some_multibyte) | |
7b863bd5 | 706 | { |
d5db4077 | 707 | int thislen_byte = SBYTES (this); |
2d6115c8 KH |
708 | int combined; |
709 | ||
d5db4077 KR |
710 | bcopy (SDATA (this), SDATA (val) + toindex_byte, |
711 | SBYTES (this)); | |
2d6115c8 | 712 | combined = (some_multibyte && toindex_byte > 0 |
d5db4077 | 713 | ? count_combining (SDATA (val), |
2d6115c8 KH |
714 | toindex_byte + thislen_byte, |
715 | toindex_byte) | |
716 | : 0); | |
d5db4077 | 717 | if (! NULL_INTERVAL_P (STRING_INTERVALS (this))) |
2d6115c8 | 718 | { |
87f0532f | 719 | textprops[num_textprops].argnum = argnum; |
2d6115c8 | 720 | /* We ignore text properties on characters being combined. */ |
87f0532f KH |
721 | textprops[num_textprops].from = combined; |
722 | textprops[num_textprops++].to = toindex; | |
2d6115c8 | 723 | } |
ea35ce3d | 724 | toindex_byte += thislen_byte; |
2d6115c8 | 725 | toindex += thisleni - combined; |
1e4c5782 | 726 | STRING_SET_CHARS (val, SCHARS (val) - combined); |
ea35ce3d | 727 | } |
09ab3c3b KH |
728 | /* Copy a single-byte string to a multibyte string. */ |
729 | else if (STRINGP (this) && STRINGP (val)) | |
730 | { | |
d5db4077 | 731 | if (! NULL_INTERVAL_P (STRING_INTERVALS (this))) |
2d6115c8 | 732 | { |
87f0532f KH |
733 | textprops[num_textprops].argnum = argnum; |
734 | textprops[num_textprops].from = 0; | |
735 | textprops[num_textprops++].to = toindex; | |
2d6115c8 | 736 | } |
d5db4077 KR |
737 | toindex_byte += copy_text (SDATA (this), |
738 | SDATA (val) + toindex_byte, | |
739 | SCHARS (this), 0, 1); | |
09ab3c3b KH |
740 | toindex += thisleni; |
741 | } | |
ea35ce3d RS |
742 | else |
743 | /* Copy element by element. */ | |
744 | while (1) | |
745 | { | |
746 | register Lisp_Object elt; | |
747 | ||
748 | /* Fetch next element of `this' arg into `elt', or break if | |
749 | `this' is exhausted. */ | |
750 | if (NILP (this)) break; | |
751 | if (CONSP (this)) | |
70949dac | 752 | elt = XCAR (this), this = XCDR (this); |
6a7df83b RS |
753 | else if (thisindex >= thisleni) |
754 | break; | |
755 | else if (STRINGP (this)) | |
ea35ce3d | 756 | { |
2cef5737 | 757 | int c; |
6a7df83b | 758 | if (STRING_MULTIBYTE (this)) |
ea35ce3d | 759 | { |
2efdd1b9 KH |
760 | FETCH_STRING_CHAR_ADVANCE_NO_CHECK (c, this, |
761 | thisindex, | |
762 | thisindex_byte); | |
6a7df83b | 763 | XSETFASTINT (elt, c); |
ea35ce3d | 764 | } |
6a7df83b | 765 | else |
ea35ce3d | 766 | { |
d5db4077 | 767 | XSETFASTINT (elt, SREF (this, thisindex++)); |
e0e25273 KH |
768 | if (some_multibyte |
769 | && (XINT (elt) >= 0240 | |
f9638719 EZ |
770 | || (XINT (elt) >= 0200 |
771 | && ! NILP (Vnonascii_translation_table))) | |
6a7df83b RS |
772 | && XINT (elt) < 0400) |
773 | { | |
2cef5737 | 774 | c = unibyte_char_to_multibyte (XINT (elt)); |
6a7df83b RS |
775 | XSETINT (elt, c); |
776 | } | |
ea35ce3d | 777 | } |
6a7df83b RS |
778 | } |
779 | else if (BOOL_VECTOR_P (this)) | |
780 | { | |
781 | int byte; | |
782 | byte = XBOOL_VECTOR (this)->data[thisindex / BITS_PER_CHAR]; | |
783 | if (byte & (1 << (thisindex % BITS_PER_CHAR))) | |
784 | elt = Qt; | |
ea35ce3d | 785 | else |
6a7df83b RS |
786 | elt = Qnil; |
787 | thisindex++; | |
ea35ce3d | 788 | } |
6a7df83b RS |
789 | else |
790 | elt = XVECTOR (this)->contents[thisindex++]; | |
7b863bd5 | 791 | |
ea35ce3d RS |
792 | /* Store this element into the result. */ |
793 | if (toindex < 0) | |
7b863bd5 | 794 | { |
f3fbd155 | 795 | XSETCAR (tail, elt); |
ea35ce3d | 796 | prev = tail; |
70949dac | 797 | tail = XCDR (tail); |
7b863bd5 | 798 | } |
ea35ce3d RS |
799 | else if (VECTORP (val)) |
800 | XVECTOR (val)->contents[toindex++] = elt; | |
801 | else | |
802 | { | |
b7826503 | 803 | CHECK_NUMBER (elt); |
ea35ce3d RS |
804 | if (SINGLE_BYTE_CHAR_P (XINT (elt))) |
805 | { | |
2efdd1b9 KH |
806 | if (some_multibyte) |
807 | toindex_byte | |
808 | += CHAR_STRING (XINT (elt), | |
d5db4077 | 809 | SDATA (val) + toindex_byte); |
2efdd1b9 | 810 | else |
08663750 | 811 | SSET (val, toindex_byte++, XINT (elt)); |
18cc260b KH |
812 | if (some_multibyte |
813 | && toindex_byte > 0 | |
d5db4077 | 814 | && count_combining (SDATA (val), |
2d6115c8 | 815 | toindex_byte, toindex_byte - 1)) |
1e4c5782 | 816 | STRING_SET_CHARS (val, SCHARS (val) - 1); |
2d6115c8 KH |
817 | else |
818 | toindex++; | |
ea35ce3d RS |
819 | } |
820 | else | |
821 | /* If we have any multibyte characters, | |
822 | we already decided to make a multibyte string. */ | |
823 | { | |
824 | int c = XINT (elt); | |
ea35ce3d RS |
825 | /* P exists as a variable |
826 | to avoid a bug on the Masscomp C compiler. */ | |
08663750 | 827 | unsigned char *p = SDATA (val) + toindex_byte; |
64a5094a KH |
828 | |
829 | toindex_byte += CHAR_STRING (c, p); | |
ea35ce3d RS |
830 | toindex++; |
831 | } | |
832 | } | |
833 | } | |
7b863bd5 | 834 | } |
265a9e55 | 835 | if (!NILP (prev)) |
f3fbd155 | 836 | XSETCDR (prev, last_tail); |
7b863bd5 | 837 | |
87f0532f | 838 | if (num_textprops > 0) |
2d6115c8 | 839 | { |
33f37824 | 840 | Lisp_Object props; |
3bd00f3b | 841 | int last_to_end = -1; |
33f37824 | 842 | |
87f0532f | 843 | for (argnum = 0; argnum < num_textprops; argnum++) |
2d6115c8 | 844 | { |
87f0532f | 845 | this = args[textprops[argnum].argnum]; |
33f37824 KH |
846 | props = text_property_list (this, |
847 | make_number (0), | |
d5db4077 | 848 | make_number (SCHARS (this)), |
33f37824 KH |
849 | Qnil); |
850 | /* If successive arguments have properites, be sure that the | |
851 | value of `composition' property be the copy. */ | |
3bd00f3b | 852 | if (last_to_end == textprops[argnum].to) |
33f37824 KH |
853 | make_composition_value_copy (props); |
854 | add_text_properties_from_list (val, props, | |
855 | make_number (textprops[argnum].to)); | |
d5db4077 | 856 | last_to_end = textprops[argnum].to + SCHARS (this); |
2d6115c8 KH |
857 | } |
858 | } | |
b4f334f7 | 859 | return val; |
7b863bd5 JB |
860 | } |
861 | \f | |
09ab3c3b KH |
862 | static Lisp_Object string_char_byte_cache_string; |
863 | static int string_char_byte_cache_charpos; | |
864 | static int string_char_byte_cache_bytepos; | |
865 | ||
57247650 KH |
866 | void |
867 | clear_string_char_byte_cache () | |
868 | { | |
869 | string_char_byte_cache_string = Qnil; | |
870 | } | |
871 | ||
ea35ce3d RS |
872 | /* Return the character index corresponding to CHAR_INDEX in STRING. */ |
873 | ||
874 | int | |
875 | string_char_to_byte (string, char_index) | |
876 | Lisp_Object string; | |
877 | int char_index; | |
878 | { | |
09ab3c3b KH |
879 | int i, i_byte; |
880 | int best_below, best_below_byte; | |
881 | int best_above, best_above_byte; | |
ea35ce3d RS |
882 | |
883 | if (! STRING_MULTIBYTE (string)) | |
884 | return char_index; | |
885 | ||
09ab3c3b | 886 | best_below = best_below_byte = 0; |
d5db4077 KR |
887 | best_above = SCHARS (string); |
888 | best_above_byte = SBYTES (string); | |
09ab3c3b KH |
889 | |
890 | if (EQ (string, string_char_byte_cache_string)) | |
891 | { | |
892 | if (string_char_byte_cache_charpos < char_index) | |
893 | { | |
894 | best_below = string_char_byte_cache_charpos; | |
895 | best_below_byte = string_char_byte_cache_bytepos; | |
896 | } | |
897 | else | |
898 | { | |
899 | best_above = string_char_byte_cache_charpos; | |
900 | best_above_byte = string_char_byte_cache_bytepos; | |
901 | } | |
902 | } | |
903 | ||
904 | if (char_index - best_below < best_above - char_index) | |
905 | { | |
906 | while (best_below < char_index) | |
907 | { | |
908 | int c; | |
2efdd1b9 KH |
909 | FETCH_STRING_CHAR_ADVANCE_NO_CHECK (c, string, |
910 | best_below, best_below_byte); | |
09ab3c3b KH |
911 | } |
912 | i = best_below; | |
913 | i_byte = best_below_byte; | |
914 | } | |
915 | else | |
ea35ce3d | 916 | { |
09ab3c3b KH |
917 | while (best_above > char_index) |
918 | { | |
d5db4077 | 919 | unsigned char *pend = SDATA (string) + best_above_byte; |
e50d9192 KH |
920 | unsigned char *pbeg = pend - best_above_byte; |
921 | unsigned char *p = pend - 1; | |
922 | int bytes; | |
923 | ||
924 | while (p > pbeg && !CHAR_HEAD_P (*p)) p--; | |
925 | PARSE_MULTIBYTE_SEQ (p, pend - p, bytes); | |
926 | if (bytes == pend - p) | |
927 | best_above_byte -= bytes; | |
928 | else if (bytes > pend - p) | |
929 | best_above_byte -= (pend - p); | |
930 | else | |
09ab3c3b | 931 | best_above_byte--; |
09ab3c3b KH |
932 | best_above--; |
933 | } | |
934 | i = best_above; | |
935 | i_byte = best_above_byte; | |
ea35ce3d RS |
936 | } |
937 | ||
09ab3c3b KH |
938 | string_char_byte_cache_bytepos = i_byte; |
939 | string_char_byte_cache_charpos = i; | |
940 | string_char_byte_cache_string = string; | |
941 | ||
ea35ce3d RS |
942 | return i_byte; |
943 | } | |
09ab3c3b | 944 | \f |
ea35ce3d RS |
945 | /* Return the character index corresponding to BYTE_INDEX in STRING. */ |
946 | ||
947 | int | |
948 | string_byte_to_char (string, byte_index) | |
949 | Lisp_Object string; | |
950 | int byte_index; | |
951 | { | |
09ab3c3b KH |
952 | int i, i_byte; |
953 | int best_below, best_below_byte; | |
954 | int best_above, best_above_byte; | |
ea35ce3d RS |
955 | |
956 | if (! STRING_MULTIBYTE (string)) | |
957 | return byte_index; | |
958 | ||
09ab3c3b | 959 | best_below = best_below_byte = 0; |
d5db4077 KR |
960 | best_above = SCHARS (string); |
961 | best_above_byte = SBYTES (string); | |
09ab3c3b KH |
962 | |
963 | if (EQ (string, string_char_byte_cache_string)) | |
964 | { | |
965 | if (string_char_byte_cache_bytepos < byte_index) | |
966 | { | |
967 | best_below = string_char_byte_cache_charpos; | |
968 | best_below_byte = string_char_byte_cache_bytepos; | |
969 | } | |
970 | else | |
971 | { | |
972 | best_above = string_char_byte_cache_charpos; | |
973 | best_above_byte = string_char_byte_cache_bytepos; | |
974 | } | |
975 | } | |
976 | ||
977 | if (byte_index - best_below_byte < best_above_byte - byte_index) | |
978 | { | |
979 | while (best_below_byte < byte_index) | |
980 | { | |
981 | int c; | |
2efdd1b9 KH |
982 | FETCH_STRING_CHAR_ADVANCE_NO_CHECK (c, string, |
983 | best_below, best_below_byte); | |
09ab3c3b KH |
984 | } |
985 | i = best_below; | |
986 | i_byte = best_below_byte; | |
987 | } | |
988 | else | |
ea35ce3d | 989 | { |
09ab3c3b KH |
990 | while (best_above_byte > byte_index) |
991 | { | |
d5db4077 | 992 | unsigned char *pend = SDATA (string) + best_above_byte; |
e50d9192 KH |
993 | unsigned char *pbeg = pend - best_above_byte; |
994 | unsigned char *p = pend - 1; | |
995 | int bytes; | |
996 | ||
997 | while (p > pbeg && !CHAR_HEAD_P (*p)) p--; | |
998 | PARSE_MULTIBYTE_SEQ (p, pend - p, bytes); | |
999 | if (bytes == pend - p) | |
1000 | best_above_byte -= bytes; | |
1001 | else if (bytes > pend - p) | |
1002 | best_above_byte -= (pend - p); | |
1003 | else | |
09ab3c3b | 1004 | best_above_byte--; |
09ab3c3b KH |
1005 | best_above--; |
1006 | } | |
1007 | i = best_above; | |
1008 | i_byte = best_above_byte; | |
ea35ce3d RS |
1009 | } |
1010 | ||
09ab3c3b KH |
1011 | string_char_byte_cache_bytepos = i_byte; |
1012 | string_char_byte_cache_charpos = i; | |
1013 | string_char_byte_cache_string = string; | |
1014 | ||
ea35ce3d RS |
1015 | return i; |
1016 | } | |
09ab3c3b | 1017 | \f |
ea35ce3d | 1018 | /* Convert STRING to a multibyte string. |
2cef5737 | 1019 | Single-byte characters 0240 through 0377 are converted |
ea35ce3d RS |
1020 | by adding nonascii_insert_offset to each. */ |
1021 | ||
1022 | Lisp_Object | |
1023 | string_make_multibyte (string) | |
1024 | Lisp_Object string; | |
1025 | { | |
1026 | unsigned char *buf; | |
1027 | int nbytes; | |
1028 | ||
1029 | if (STRING_MULTIBYTE (string)) | |
1030 | return string; | |
1031 | ||
d5db4077 KR |
1032 | nbytes = count_size_as_multibyte (SDATA (string), |
1033 | SCHARS (string)); | |
6d475204 RS |
1034 | /* If all the chars are ASCII, they won't need any more bytes |
1035 | once converted. In that case, we can return STRING itself. */ | |
d5db4077 | 1036 | if (nbytes == SBYTES (string)) |
6d475204 RS |
1037 | return string; |
1038 | ||
ea35ce3d | 1039 | buf = (unsigned char *) alloca (nbytes); |
d5db4077 | 1040 | copy_text (SDATA (string), buf, SBYTES (string), |
ea35ce3d RS |
1041 | 0, 1); |
1042 | ||
d5db4077 | 1043 | return make_multibyte_string (buf, SCHARS (string), nbytes); |
ea35ce3d RS |
1044 | } |
1045 | ||
2df18cdb KH |
1046 | |
1047 | /* Convert STRING to a multibyte string without changing each | |
1048 | character codes. Thus, characters 0200 trough 0237 are converted | |
1049 | to eight-bit-control characters, and characters 0240 through 0377 | |
1050 | are converted eight-bit-graphic characters. */ | |
1051 | ||
1052 | Lisp_Object | |
1053 | string_to_multibyte (string) | |
1054 | Lisp_Object string; | |
1055 | { | |
1056 | unsigned char *buf; | |
1057 | int nbytes; | |
2df18cdb KH |
1058 | |
1059 | if (STRING_MULTIBYTE (string)) | |
1060 | return string; | |
1061 | ||
1062 | nbytes = parse_str_to_multibyte (SDATA (string), SBYTES (string)); | |
fb4452cc KH |
1063 | /* If all the chars are ASCII or eight-bit-graphic, they won't need |
1064 | any more bytes once converted. */ | |
2df18cdb | 1065 | if (nbytes == SBYTES (string)) |
fb4452cc | 1066 | return make_multibyte_string (SDATA (string), nbytes, nbytes); |
2df18cdb KH |
1067 | |
1068 | buf = (unsigned char *) alloca (nbytes); | |
1069 | bcopy (SDATA (string), buf, SBYTES (string)); | |
1070 | str_to_multibyte (buf, nbytes, SBYTES (string)); | |
1071 | ||
1072 | return make_multibyte_string (buf, SCHARS (string), nbytes); | |
1073 | } | |
1074 | ||
1075 | ||
ea35ce3d RS |
1076 | /* Convert STRING to a single-byte string. */ |
1077 | ||
1078 | Lisp_Object | |
1079 | string_make_unibyte (string) | |
1080 | Lisp_Object string; | |
1081 | { | |
1082 | unsigned char *buf; | |
1083 | ||
1084 | if (! STRING_MULTIBYTE (string)) | |
1085 | return string; | |
1086 | ||
d5db4077 | 1087 | buf = (unsigned char *) alloca (SCHARS (string)); |
ea35ce3d | 1088 | |
d5db4077 | 1089 | copy_text (SDATA (string), buf, SBYTES (string), |
ea35ce3d RS |
1090 | 1, 0); |
1091 | ||
d5db4077 | 1092 | return make_unibyte_string (buf, SCHARS (string)); |
ea35ce3d | 1093 | } |
09ab3c3b KH |
1094 | |
1095 | DEFUN ("string-make-multibyte", Fstring_make_multibyte, Sstring_make_multibyte, | |
1096 | 1, 1, 0, | |
e9d8ddc9 | 1097 | doc: /* Return the multibyte equivalent of STRING. |
47cebab1 | 1098 | The function `unibyte-char-to-multibyte' is used to convert |
e9d8ddc9 MB |
1099 | each unibyte character to a multibyte character. */) |
1100 | (string) | |
09ab3c3b KH |
1101 | Lisp_Object string; |
1102 | { | |
b7826503 | 1103 | CHECK_STRING (string); |
aabd38ec | 1104 | |
09ab3c3b KH |
1105 | return string_make_multibyte (string); |
1106 | } | |
1107 | ||
1108 | DEFUN ("string-make-unibyte", Fstring_make_unibyte, Sstring_make_unibyte, | |
1109 | 1, 1, 0, | |
e9d8ddc9 | 1110 | doc: /* Return the unibyte equivalent of STRING. |
f8f2fbf9 EZ |
1111 | Multibyte character codes are converted to unibyte according to |
1112 | `nonascii-translation-table' or, if that is nil, `nonascii-insert-offset'. | |
1113 | If the lookup in the translation table fails, this function takes just | |
1114 | the low 8 bits of each character. */) | |
e9d8ddc9 | 1115 | (string) |
09ab3c3b KH |
1116 | Lisp_Object string; |
1117 | { | |
b7826503 | 1118 | CHECK_STRING (string); |
aabd38ec | 1119 | |
09ab3c3b KH |
1120 | return string_make_unibyte (string); |
1121 | } | |
6d475204 RS |
1122 | |
1123 | DEFUN ("string-as-unibyte", Fstring_as_unibyte, Sstring_as_unibyte, | |
1124 | 1, 1, 0, | |
e9d8ddc9 | 1125 | doc: /* Return a unibyte string with the same individual bytes as STRING. |
47cebab1 GM |
1126 | If STRING is unibyte, the result is STRING itself. |
1127 | Otherwise it is a newly created string, with no text properties. | |
1128 | If STRING is multibyte and contains a character of charset | |
1129 | `eight-bit-control' or `eight-bit-graphic', it is converted to the | |
e9d8ddc9 MB |
1130 | corresponding single byte. */) |
1131 | (string) | |
6d475204 RS |
1132 | Lisp_Object string; |
1133 | { | |
b7826503 | 1134 | CHECK_STRING (string); |
aabd38ec | 1135 | |
6d475204 RS |
1136 | if (STRING_MULTIBYTE (string)) |
1137 | { | |
d5db4077 | 1138 | int bytes = SBYTES (string); |
2efdd1b9 KH |
1139 | unsigned char *str = (unsigned char *) xmalloc (bytes); |
1140 | ||
d5db4077 | 1141 | bcopy (SDATA (string), str, bytes); |
2efdd1b9 KH |
1142 | bytes = str_as_unibyte (str, bytes); |
1143 | string = make_unibyte_string (str, bytes); | |
1144 | xfree (str); | |
6d475204 RS |
1145 | } |
1146 | return string; | |
1147 | } | |
1148 | ||
1149 | DEFUN ("string-as-multibyte", Fstring_as_multibyte, Sstring_as_multibyte, | |
1150 | 1, 1, 0, | |
e9d8ddc9 | 1151 | doc: /* Return a multibyte string with the same individual bytes as STRING. |
47cebab1 GM |
1152 | If STRING is multibyte, the result is STRING itself. |
1153 | Otherwise it is a newly created string, with no text properties. | |
1154 | If STRING is unibyte and contains an individual 8-bit byte (i.e. not | |
1155 | part of a multibyte form), it is converted to the corresponding | |
e9d8ddc9 MB |
1156 | multibyte character of charset `eight-bit-control' or `eight-bit-graphic'. */) |
1157 | (string) | |
6d475204 RS |
1158 | Lisp_Object string; |
1159 | { | |
b7826503 | 1160 | CHECK_STRING (string); |
aabd38ec | 1161 | |
6d475204 RS |
1162 | if (! STRING_MULTIBYTE (string)) |
1163 | { | |
2efdd1b9 KH |
1164 | Lisp_Object new_string; |
1165 | int nchars, nbytes; | |
1166 | ||
d5db4077 KR |
1167 | parse_str_as_multibyte (SDATA (string), |
1168 | SBYTES (string), | |
2efdd1b9 KH |
1169 | &nchars, &nbytes); |
1170 | new_string = make_uninit_multibyte_string (nchars, nbytes); | |
d5db4077 KR |
1171 | bcopy (SDATA (string), SDATA (new_string), |
1172 | SBYTES (string)); | |
1173 | if (nbytes != SBYTES (string)) | |
1174 | str_as_multibyte (SDATA (new_string), nbytes, | |
1175 | SBYTES (string), NULL); | |
2efdd1b9 | 1176 | string = new_string; |
7a2e5600 | 1177 | STRING_SET_INTERVALS (string, NULL_INTERVAL); |
6d475204 RS |
1178 | } |
1179 | return string; | |
1180 | } | |
2df18cdb KH |
1181 | |
1182 | DEFUN ("string-to-multibyte", Fstring_to_multibyte, Sstring_to_multibyte, | |
1183 | 1, 1, 0, | |
1184 | doc: /* Return a multibyte string with the same individual chars as STRING. | |
9c7a329a | 1185 | If STRING is multibyte, the result is STRING itself. |
2df18cdb KH |
1186 | Otherwise it is a newly created string, with no text properties. |
1187 | Characters 0200 through 0237 are converted to eight-bit-control | |
1188 | characters of the same character code. Characters 0240 through 0377 | |
1189 | are converted to eight-bit-control characters of the same character | |
1190 | codes. */) | |
1191 | (string) | |
1192 | Lisp_Object string; | |
1193 | { | |
1194 | CHECK_STRING (string); | |
1195 | ||
1196 | return string_to_multibyte (string); | |
1197 | } | |
1198 | ||
ea35ce3d | 1199 | \f |
7b863bd5 | 1200 | DEFUN ("copy-alist", Fcopy_alist, Scopy_alist, 1, 1, 0, |
e9d8ddc9 | 1201 | doc: /* Return a copy of ALIST. |
47cebab1 GM |
1202 | This is an alist which represents the same mapping from objects to objects, |
1203 | but does not share the alist structure with ALIST. | |
1204 | The objects mapped (cars and cdrs of elements of the alist) | |
1205 | are shared, however. | |
e9d8ddc9 MB |
1206 | Elements of ALIST that are not conses are also shared. */) |
1207 | (alist) | |
7b863bd5 JB |
1208 | Lisp_Object alist; |
1209 | { | |
1210 | register Lisp_Object tem; | |
1211 | ||
b7826503 | 1212 | CHECK_LIST (alist); |
265a9e55 | 1213 | if (NILP (alist)) |
7b863bd5 JB |
1214 | return alist; |
1215 | alist = concat (1, &alist, Lisp_Cons, 0); | |
70949dac | 1216 | for (tem = alist; CONSP (tem); tem = XCDR (tem)) |
7b863bd5 JB |
1217 | { |
1218 | register Lisp_Object car; | |
70949dac | 1219 | car = XCAR (tem); |
7b863bd5 JB |
1220 | |
1221 | if (CONSP (car)) | |
f3fbd155 | 1222 | XSETCAR (tem, Fcons (XCAR (car), XCDR (car))); |
7b863bd5 JB |
1223 | } |
1224 | return alist; | |
1225 | } | |
1226 | ||
1227 | DEFUN ("substring", Fsubstring, Ssubstring, 2, 3, 0, | |
ddb67bdc | 1228 | doc: /* Return a substring of STRING, starting at index FROM and ending before TO. |
47cebab1 | 1229 | TO may be nil or omitted; then the substring runs to the end of STRING. |
91f78c99 | 1230 | FROM and TO start at 0. If either is negative, it counts from the end. |
47cebab1 | 1231 | |
e9d8ddc9 MB |
1232 | This function allows vectors as well as strings. */) |
1233 | (string, from, to) | |
7b863bd5 JB |
1234 | Lisp_Object string; |
1235 | register Lisp_Object from, to; | |
1236 | { | |
ac811a55 | 1237 | Lisp_Object res; |
21fbc8e5 | 1238 | int size; |
093386ca | 1239 | int size_byte = 0; |
ea35ce3d | 1240 | int from_char, to_char; |
093386ca | 1241 | int from_byte = 0, to_byte = 0; |
21fbc8e5 RS |
1242 | |
1243 | if (! (STRINGP (string) || VECTORP (string))) | |
1244 | wrong_type_argument (Qarrayp, string); | |
ac811a55 | 1245 | |
b7826503 | 1246 | CHECK_NUMBER (from); |
21fbc8e5 RS |
1247 | |
1248 | if (STRINGP (string)) | |
ea35ce3d | 1249 | { |
d5db4077 KR |
1250 | size = SCHARS (string); |
1251 | size_byte = SBYTES (string); | |
ea35ce3d | 1252 | } |
21fbc8e5 RS |
1253 | else |
1254 | size = XVECTOR (string)->size; | |
1255 | ||
265a9e55 | 1256 | if (NILP (to)) |
ea35ce3d RS |
1257 | { |
1258 | to_char = size; | |
1259 | to_byte = size_byte; | |
1260 | } | |
7b863bd5 | 1261 | else |
ea35ce3d | 1262 | { |
b7826503 | 1263 | CHECK_NUMBER (to); |
ea35ce3d RS |
1264 | |
1265 | to_char = XINT (to); | |
1266 | if (to_char < 0) | |
1267 | to_char += size; | |
1268 | ||
1269 | if (STRINGP (string)) | |
1270 | to_byte = string_char_to_byte (string, to_char); | |
1271 | } | |
1272 | ||
1273 | from_char = XINT (from); | |
1274 | if (from_char < 0) | |
1275 | from_char += size; | |
1276 | if (STRINGP (string)) | |
1277 | from_byte = string_char_to_byte (string, from_char); | |
7b863bd5 | 1278 | |
ea35ce3d RS |
1279 | if (!(0 <= from_char && from_char <= to_char && to_char <= size)) |
1280 | args_out_of_range_3 (string, make_number (from_char), | |
1281 | make_number (to_char)); | |
7b863bd5 | 1282 | |
21fbc8e5 RS |
1283 | if (STRINGP (string)) |
1284 | { | |
d5db4077 | 1285 | res = make_specified_string (SDATA (string) + from_byte, |
b10b2daa RS |
1286 | to_char - from_char, to_byte - from_byte, |
1287 | STRING_MULTIBYTE (string)); | |
21ab867f AS |
1288 | copy_text_properties (make_number (from_char), make_number (to_char), |
1289 | string, make_number (0), res, Qnil); | |
ea35ce3d RS |
1290 | } |
1291 | else | |
1292 | res = Fvector (to_char - from_char, | |
1293 | XVECTOR (string)->contents + from_char); | |
1294 | ||
1295 | return res; | |
1296 | } | |
1297 | ||
aebf4d42 RS |
1298 | |
1299 | DEFUN ("substring-no-properties", Fsubstring_no_properties, Ssubstring_no_properties, 1, 3, 0, | |
1300 | doc: /* Return a substring of STRING, without text properties. | |
1301 | It starts at index FROM and ending before TO. | |
1302 | TO may be nil or omitted; then the substring runs to the end of STRING. | |
1303 | If FROM is nil or omitted, the substring starts at the beginning of STRING. | |
1304 | If FROM or TO is negative, it counts from the end. | |
1305 | ||
1306 | With one argument, just copy STRING without its properties. */) | |
1307 | (string, from, to) | |
1308 | Lisp_Object string; | |
1309 | register Lisp_Object from, to; | |
1310 | { | |
1311 | int size, size_byte; | |
1312 | int from_char, to_char; | |
1313 | int from_byte, to_byte; | |
1314 | ||
1315 | CHECK_STRING (string); | |
1316 | ||
d5db4077 KR |
1317 | size = SCHARS (string); |
1318 | size_byte = SBYTES (string); | |
aebf4d42 RS |
1319 | |
1320 | if (NILP (from)) | |
1321 | from_char = from_byte = 0; | |
1322 | else | |
1323 | { | |
1324 | CHECK_NUMBER (from); | |
1325 | from_char = XINT (from); | |
1326 | if (from_char < 0) | |
1327 | from_char += size; | |
1328 | ||
1329 | from_byte = string_char_to_byte (string, from_char); | |
1330 | } | |
1331 | ||
1332 | if (NILP (to)) | |
1333 | { | |
1334 | to_char = size; | |
1335 | to_byte = size_byte; | |
1336 | } | |
1337 | else | |
1338 | { | |
1339 | CHECK_NUMBER (to); | |
1340 | ||
1341 | to_char = XINT (to); | |
1342 | if (to_char < 0) | |
1343 | to_char += size; | |
1344 | ||
1345 | to_byte = string_char_to_byte (string, to_char); | |
1346 | } | |
1347 | ||
1348 | if (!(0 <= from_char && from_char <= to_char && to_char <= size)) | |
1349 | args_out_of_range_3 (string, make_number (from_char), | |
1350 | make_number (to_char)); | |
1351 | ||
d5db4077 | 1352 | return make_specified_string (SDATA (string) + from_byte, |
aebf4d42 RS |
1353 | to_char - from_char, to_byte - from_byte, |
1354 | STRING_MULTIBYTE (string)); | |
1355 | } | |
1356 | ||
ea35ce3d RS |
1357 | /* Extract a substring of STRING, giving start and end positions |
1358 | both in characters and in bytes. */ | |
1359 | ||
1360 | Lisp_Object | |
1361 | substring_both (string, from, from_byte, to, to_byte) | |
1362 | Lisp_Object string; | |
1363 | int from, from_byte, to, to_byte; | |
1364 | { | |
1365 | Lisp_Object res; | |
1366 | int size; | |
1367 | int size_byte; | |
1368 | ||
1369 | if (! (STRINGP (string) || VECTORP (string))) | |
1370 | wrong_type_argument (Qarrayp, string); | |
1371 | ||
1372 | if (STRINGP (string)) | |
1373 | { | |
d5db4077 KR |
1374 | size = SCHARS (string); |
1375 | size_byte = SBYTES (string); | |
ea35ce3d RS |
1376 | } |
1377 | else | |
1378 | size = XVECTOR (string)->size; | |
1379 | ||
1380 | if (!(0 <= from && from <= to && to <= size)) | |
1381 | args_out_of_range_3 (string, make_number (from), make_number (to)); | |
1382 | ||
1383 | if (STRINGP (string)) | |
1384 | { | |
d5db4077 | 1385 | res = make_specified_string (SDATA (string) + from_byte, |
b10b2daa RS |
1386 | to - from, to_byte - from_byte, |
1387 | STRING_MULTIBYTE (string)); | |
21ab867f AS |
1388 | copy_text_properties (make_number (from), make_number (to), |
1389 | string, make_number (0), res, Qnil); | |
21fbc8e5 RS |
1390 | } |
1391 | else | |
ea35ce3d RS |
1392 | res = Fvector (to - from, |
1393 | XVECTOR (string)->contents + from); | |
b4f334f7 | 1394 | |
ac811a55 | 1395 | return res; |
7b863bd5 JB |
1396 | } |
1397 | \f | |
1398 | DEFUN ("nthcdr", Fnthcdr, Snthcdr, 2, 2, 0, | |
e9d8ddc9 MB |
1399 | doc: /* Take cdr N times on LIST, returns the result. */) |
1400 | (n, list) | |
7b863bd5 JB |
1401 | Lisp_Object n; |
1402 | register Lisp_Object list; | |
1403 | { | |
1404 | register int i, num; | |
b7826503 | 1405 | CHECK_NUMBER (n); |
7b863bd5 | 1406 | num = XINT (n); |
265a9e55 | 1407 | for (i = 0; i < num && !NILP (list); i++) |
7b863bd5 JB |
1408 | { |
1409 | QUIT; | |
71a8e74b DL |
1410 | if (! CONSP (list)) |
1411 | wrong_type_argument (Qlistp, list); | |
1412 | list = XCDR (list); | |
7b863bd5 JB |
1413 | } |
1414 | return list; | |
1415 | } | |
1416 | ||
1417 | DEFUN ("nth", Fnth, Snth, 2, 2, 0, | |
e9d8ddc9 MB |
1418 | doc: /* Return the Nth element of LIST. |
1419 | N counts from zero. If LIST is not that long, nil is returned. */) | |
1420 | (n, list) | |
7b863bd5 JB |
1421 | Lisp_Object n, list; |
1422 | { | |
1423 | return Fcar (Fnthcdr (n, list)); | |
1424 | } | |
1425 | ||
1426 | DEFUN ("elt", Felt, Selt, 2, 2, 0, | |
e9d8ddc9 MB |
1427 | doc: /* Return element of SEQUENCE at index N. */) |
1428 | (sequence, n) | |
88fe8140 | 1429 | register Lisp_Object sequence, n; |
7b863bd5 | 1430 | { |
b7826503 | 1431 | CHECK_NUMBER (n); |
7b863bd5 JB |
1432 | while (1) |
1433 | { | |
88fe8140 EN |
1434 | if (CONSP (sequence) || NILP (sequence)) |
1435 | return Fcar (Fnthcdr (n, sequence)); | |
1436 | else if (STRINGP (sequence) || VECTORP (sequence) | |
1437 | || BOOL_VECTOR_P (sequence) || CHAR_TABLE_P (sequence)) | |
1438 | return Faref (sequence, n); | |
7b863bd5 | 1439 | else |
88fe8140 | 1440 | sequence = wrong_type_argument (Qsequencep, sequence); |
7b863bd5 JB |
1441 | } |
1442 | } | |
1443 | ||
1444 | DEFUN ("member", Fmember, Smember, 2, 2, 0, | |
e9d8ddc9 MB |
1445 | doc: /* Return non-nil if ELT is an element of LIST. Comparison done with `equal'. |
1446 | The value is actually the tail of LIST whose car is ELT. */) | |
1447 | (elt, list) | |
7b863bd5 JB |
1448 | register Lisp_Object elt; |
1449 | Lisp_Object list; | |
1450 | { | |
1451 | register Lisp_Object tail; | |
70949dac | 1452 | for (tail = list; !NILP (tail); tail = XCDR (tail)) |
7b863bd5 JB |
1453 | { |
1454 | register Lisp_Object tem; | |
71a8e74b DL |
1455 | if (! CONSP (tail)) |
1456 | wrong_type_argument (Qlistp, list); | |
1457 | tem = XCAR (tail); | |
265a9e55 | 1458 | if (! NILP (Fequal (elt, tem))) |
7b863bd5 JB |
1459 | return tail; |
1460 | QUIT; | |
1461 | } | |
1462 | return Qnil; | |
1463 | } | |
1464 | ||
1465 | DEFUN ("memq", Fmemq, Smemq, 2, 2, 0, | |
e9d8ddc9 | 1466 | doc: /* Return non-nil if ELT is an element of LIST. |
47cebab1 | 1467 | Comparison done with EQ. The value is actually the tail of LIST |
e9d8ddc9 MB |
1468 | whose car is ELT. */) |
1469 | (elt, list) | |
f2be3671 | 1470 | Lisp_Object elt, list; |
7b863bd5 | 1471 | { |
f2be3671 | 1472 | while (1) |
7b863bd5 | 1473 | { |
f2be3671 GM |
1474 | if (!CONSP (list) || EQ (XCAR (list), elt)) |
1475 | break; | |
59f953a2 | 1476 | |
f2be3671 GM |
1477 | list = XCDR (list); |
1478 | if (!CONSP (list) || EQ (XCAR (list), elt)) | |
1479 | break; | |
1480 | ||
1481 | list = XCDR (list); | |
1482 | if (!CONSP (list) || EQ (XCAR (list), elt)) | |
1483 | break; | |
1484 | ||
1485 | list = XCDR (list); | |
7b863bd5 JB |
1486 | QUIT; |
1487 | } | |
f2be3671 GM |
1488 | |
1489 | if (!CONSP (list) && !NILP (list)) | |
1490 | list = wrong_type_argument (Qlistp, list); | |
1491 | ||
1492 | return list; | |
7b863bd5 JB |
1493 | } |
1494 | ||
1495 | DEFUN ("assq", Fassq, Sassq, 2, 2, 0, | |
e9d8ddc9 | 1496 | doc: /* Return non-nil if KEY is `eq' to the car of an element of LIST. |
47cebab1 | 1497 | The value is actually the element of LIST whose car is KEY. |
e9d8ddc9 MB |
1498 | Elements of LIST that are not conses are ignored. */) |
1499 | (key, list) | |
f2be3671 | 1500 | Lisp_Object key, list; |
7b863bd5 | 1501 | { |
f2be3671 GM |
1502 | Lisp_Object result; |
1503 | ||
1504 | while (1) | |
7b863bd5 | 1505 | { |
f2be3671 GM |
1506 | if (!CONSP (list) |
1507 | || (CONSP (XCAR (list)) | |
1508 | && EQ (XCAR (XCAR (list)), key))) | |
1509 | break; | |
59f953a2 | 1510 | |
f2be3671 GM |
1511 | list = XCDR (list); |
1512 | if (!CONSP (list) | |
1513 | || (CONSP (XCAR (list)) | |
1514 | && EQ (XCAR (XCAR (list)), key))) | |
1515 | break; | |
59f953a2 | 1516 | |
f2be3671 GM |
1517 | list = XCDR (list); |
1518 | if (!CONSP (list) | |
1519 | || (CONSP (XCAR (list)) | |
1520 | && EQ (XCAR (XCAR (list)), key))) | |
1521 | break; | |
59f953a2 | 1522 | |
f2be3671 | 1523 | list = XCDR (list); |
7b863bd5 JB |
1524 | QUIT; |
1525 | } | |
f2be3671 GM |
1526 | |
1527 | if (CONSP (list)) | |
1528 | result = XCAR (list); | |
1529 | else if (NILP (list)) | |
1530 | result = Qnil; | |
1531 | else | |
1532 | result = wrong_type_argument (Qlistp, list); | |
1533 | ||
1534 | return result; | |
7b863bd5 JB |
1535 | } |
1536 | ||
1537 | /* Like Fassq but never report an error and do not allow quits. | |
1538 | Use only on lists known never to be circular. */ | |
1539 | ||
1540 | Lisp_Object | |
1541 | assq_no_quit (key, list) | |
f2be3671 | 1542 | Lisp_Object key, list; |
7b863bd5 | 1543 | { |
f2be3671 GM |
1544 | while (CONSP (list) |
1545 | && (!CONSP (XCAR (list)) | |
1546 | || !EQ (XCAR (XCAR (list)), key))) | |
1547 | list = XCDR (list); | |
1548 | ||
1549 | return CONSP (list) ? XCAR (list) : Qnil; | |
7b863bd5 JB |
1550 | } |
1551 | ||
1552 | DEFUN ("assoc", Fassoc, Sassoc, 2, 2, 0, | |
e9d8ddc9 MB |
1553 | doc: /* Return non-nil if KEY is `equal' to the car of an element of LIST. |
1554 | The value is actually the element of LIST whose car equals KEY. */) | |
1555 | (key, list) | |
f2be3671 | 1556 | Lisp_Object key, list; |
7b863bd5 | 1557 | { |
f2be3671 GM |
1558 | Lisp_Object result, car; |
1559 | ||
1560 | while (1) | |
7b863bd5 | 1561 | { |
f2be3671 GM |
1562 | if (!CONSP (list) |
1563 | || (CONSP (XCAR (list)) | |
1564 | && (car = XCAR (XCAR (list)), | |
1565 | EQ (car, key) || !NILP (Fequal (car, key))))) | |
1566 | break; | |
59f953a2 | 1567 | |
f2be3671 GM |
1568 | list = XCDR (list); |
1569 | if (!CONSP (list) | |
1570 | || (CONSP (XCAR (list)) | |
1571 | && (car = XCAR (XCAR (list)), | |
1572 | EQ (car, key) || !NILP (Fequal (car, key))))) | |
1573 | break; | |
59f953a2 | 1574 | |
f2be3671 GM |
1575 | list = XCDR (list); |
1576 | if (!CONSP (list) | |
1577 | || (CONSP (XCAR (list)) | |
1578 | && (car = XCAR (XCAR (list)), | |
1579 | EQ (car, key) || !NILP (Fequal (car, key))))) | |
1580 | break; | |
59f953a2 | 1581 | |
f2be3671 | 1582 | list = XCDR (list); |
7b863bd5 JB |
1583 | QUIT; |
1584 | } | |
f2be3671 GM |
1585 | |
1586 | if (CONSP (list)) | |
1587 | result = XCAR (list); | |
1588 | else if (NILP (list)) | |
1589 | result = Qnil; | |
1590 | else | |
1591 | result = wrong_type_argument (Qlistp, list); | |
1592 | ||
1593 | return result; | |
7b863bd5 JB |
1594 | } |
1595 | ||
1596 | DEFUN ("rassq", Frassq, Srassq, 2, 2, 0, | |
e9d8ddc9 MB |
1597 | doc: /* Return non-nil if KEY is `eq' to the cdr of an element of LIST. |
1598 | The value is actually the element of LIST whose cdr is KEY. */) | |
1599 | (key, list) | |
7b863bd5 JB |
1600 | register Lisp_Object key; |
1601 | Lisp_Object list; | |
1602 | { | |
f2be3671 GM |
1603 | Lisp_Object result; |
1604 | ||
1605 | while (1) | |
7b863bd5 | 1606 | { |
f2be3671 GM |
1607 | if (!CONSP (list) |
1608 | || (CONSP (XCAR (list)) | |
1609 | && EQ (XCDR (XCAR (list)), key))) | |
1610 | break; | |
59f953a2 | 1611 | |
f2be3671 GM |
1612 | list = XCDR (list); |
1613 | if (!CONSP (list) | |
1614 | || (CONSP (XCAR (list)) | |
1615 | && EQ (XCDR (XCAR (list)), key))) | |
1616 | break; | |
59f953a2 | 1617 | |
f2be3671 GM |
1618 | list = XCDR (list); |
1619 | if (!CONSP (list) | |
1620 | || (CONSP (XCAR (list)) | |
1621 | && EQ (XCDR (XCAR (list)), key))) | |
1622 | break; | |
59f953a2 | 1623 | |
f2be3671 | 1624 | list = XCDR (list); |
7b863bd5 JB |
1625 | QUIT; |
1626 | } | |
f2be3671 GM |
1627 | |
1628 | if (NILP (list)) | |
1629 | result = Qnil; | |
1630 | else if (CONSP (list)) | |
1631 | result = XCAR (list); | |
1632 | else | |
1633 | result = wrong_type_argument (Qlistp, list); | |
1634 | ||
1635 | return result; | |
7b863bd5 | 1636 | } |
0fb5a19c RS |
1637 | |
1638 | DEFUN ("rassoc", Frassoc, Srassoc, 2, 2, 0, | |
e9d8ddc9 MB |
1639 | doc: /* Return non-nil if KEY is `equal' to the cdr of an element of LIST. |
1640 | The value is actually the element of LIST whose cdr equals KEY. */) | |
1641 | (key, list) | |
f2be3671 | 1642 | Lisp_Object key, list; |
0fb5a19c | 1643 | { |
f2be3671 GM |
1644 | Lisp_Object result, cdr; |
1645 | ||
1646 | while (1) | |
0fb5a19c | 1647 | { |
f2be3671 GM |
1648 | if (!CONSP (list) |
1649 | || (CONSP (XCAR (list)) | |
1650 | && (cdr = XCDR (XCAR (list)), | |
1651 | EQ (cdr, key) || !NILP (Fequal (cdr, key))))) | |
1652 | break; | |
59f953a2 | 1653 | |
f2be3671 GM |
1654 | list = XCDR (list); |
1655 | if (!CONSP (list) | |
1656 | || (CONSP (XCAR (list)) | |
1657 | && (cdr = XCDR (XCAR (list)), | |
1658 | EQ (cdr, key) || !NILP (Fequal (cdr, key))))) | |
1659 | break; | |
59f953a2 | 1660 | |
f2be3671 GM |
1661 | list = XCDR (list); |
1662 | if (!CONSP (list) | |
1663 | || (CONSP (XCAR (list)) | |
1664 | && (cdr = XCDR (XCAR (list)), | |
1665 | EQ (cdr, key) || !NILP (Fequal (cdr, key))))) | |
1666 | break; | |
59f953a2 | 1667 | |
f2be3671 | 1668 | list = XCDR (list); |
0fb5a19c RS |
1669 | QUIT; |
1670 | } | |
f2be3671 GM |
1671 | |
1672 | if (CONSP (list)) | |
1673 | result = XCAR (list); | |
1674 | else if (NILP (list)) | |
1675 | result = Qnil; | |
1676 | else | |
1677 | result = wrong_type_argument (Qlistp, list); | |
1678 | ||
1679 | return result; | |
0fb5a19c | 1680 | } |
7b863bd5 JB |
1681 | \f |
1682 | DEFUN ("delq", Fdelq, Sdelq, 2, 2, 0, | |
e9d8ddc9 | 1683 | doc: /* Delete by side effect any occurrences of ELT as a member of LIST. |
47cebab1 GM |
1684 | The modified LIST is returned. Comparison is done with `eq'. |
1685 | If the first member of LIST is ELT, there is no way to remove it by side effect; | |
1686 | therefore, write `(setq foo (delq element foo))' | |
e9d8ddc9 MB |
1687 | to be sure of changing the value of `foo'. */) |
1688 | (elt, list) | |
7b863bd5 JB |
1689 | register Lisp_Object elt; |
1690 | Lisp_Object list; | |
1691 | { | |
1692 | register Lisp_Object tail, prev; | |
1693 | register Lisp_Object tem; | |
1694 | ||
1695 | tail = list; | |
1696 | prev = Qnil; | |
265a9e55 | 1697 | while (!NILP (tail)) |
7b863bd5 | 1698 | { |
71a8e74b DL |
1699 | if (! CONSP (tail)) |
1700 | wrong_type_argument (Qlistp, list); | |
1701 | tem = XCAR (tail); | |
7b863bd5 JB |
1702 | if (EQ (elt, tem)) |
1703 | { | |
265a9e55 | 1704 | if (NILP (prev)) |
70949dac | 1705 | list = XCDR (tail); |
7b863bd5 | 1706 | else |
70949dac | 1707 | Fsetcdr (prev, XCDR (tail)); |
7b863bd5 JB |
1708 | } |
1709 | else | |
1710 | prev = tail; | |
70949dac | 1711 | tail = XCDR (tail); |
7b863bd5 JB |
1712 | QUIT; |
1713 | } | |
1714 | return list; | |
1715 | } | |
1716 | ||
ca8dd546 | 1717 | DEFUN ("delete", Fdelete, Sdelete, 2, 2, 0, |
e9d8ddc9 | 1718 | doc: /* Delete by side effect any occurrences of ELT as a member of SEQ. |
47cebab1 GM |
1719 | SEQ must be a list, a vector, or a string. |
1720 | The modified SEQ is returned. Comparison is done with `equal'. | |
1721 | If SEQ is not a list, or the first member of SEQ is ELT, deleting it | |
1722 | is not a side effect; it is simply using a different sequence. | |
1723 | Therefore, write `(setq foo (delete element foo))' | |
e9d8ddc9 MB |
1724 | to be sure of changing the value of `foo'. */) |
1725 | (elt, seq) | |
e517f19d | 1726 | Lisp_Object elt, seq; |
1e134a5f | 1727 | { |
e517f19d GM |
1728 | if (VECTORP (seq)) |
1729 | { | |
504f24f1 | 1730 | EMACS_INT i, n; |
1e134a5f | 1731 | |
e517f19d GM |
1732 | for (i = n = 0; i < ASIZE (seq); ++i) |
1733 | if (NILP (Fequal (AREF (seq, i), elt))) | |
1734 | ++n; | |
1735 | ||
1736 | if (n != ASIZE (seq)) | |
1737 | { | |
b3660ef6 | 1738 | struct Lisp_Vector *p = allocate_vector (n); |
59f953a2 | 1739 | |
e517f19d GM |
1740 | for (i = n = 0; i < ASIZE (seq); ++i) |
1741 | if (NILP (Fequal (AREF (seq, i), elt))) | |
1742 | p->contents[n++] = AREF (seq, i); | |
1743 | ||
e517f19d GM |
1744 | XSETVECTOR (seq, p); |
1745 | } | |
1746 | } | |
1747 | else if (STRINGP (seq)) | |
1e134a5f | 1748 | { |
e517f19d GM |
1749 | EMACS_INT i, ibyte, nchars, nbytes, cbytes; |
1750 | int c; | |
1751 | ||
1752 | for (i = nchars = nbytes = ibyte = 0; | |
d5db4077 | 1753 | i < SCHARS (seq); |
e517f19d | 1754 | ++i, ibyte += cbytes) |
1e134a5f | 1755 | { |
e517f19d GM |
1756 | if (STRING_MULTIBYTE (seq)) |
1757 | { | |
08663750 | 1758 | c = STRING_CHAR (SDATA (seq) + ibyte, |
d5db4077 | 1759 | SBYTES (seq) - ibyte); |
e517f19d GM |
1760 | cbytes = CHAR_BYTES (c); |
1761 | } | |
1e134a5f | 1762 | else |
e517f19d | 1763 | { |
d5db4077 | 1764 | c = SREF (seq, i); |
e517f19d GM |
1765 | cbytes = 1; |
1766 | } | |
59f953a2 | 1767 | |
e517f19d GM |
1768 | if (!INTEGERP (elt) || c != XINT (elt)) |
1769 | { | |
1770 | ++nchars; | |
1771 | nbytes += cbytes; | |
1772 | } | |
1773 | } | |
1774 | ||
d5db4077 | 1775 | if (nchars != SCHARS (seq)) |
e517f19d GM |
1776 | { |
1777 | Lisp_Object tem; | |
1778 | ||
1779 | tem = make_uninit_multibyte_string (nchars, nbytes); | |
1780 | if (!STRING_MULTIBYTE (seq)) | |
d5db4077 | 1781 | STRING_SET_UNIBYTE (tem); |
59f953a2 | 1782 | |
e517f19d | 1783 | for (i = nchars = nbytes = ibyte = 0; |
d5db4077 | 1784 | i < SCHARS (seq); |
e517f19d GM |
1785 | ++i, ibyte += cbytes) |
1786 | { | |
1787 | if (STRING_MULTIBYTE (seq)) | |
1788 | { | |
08663750 | 1789 | c = STRING_CHAR (SDATA (seq) + ibyte, |
d5db4077 | 1790 | SBYTES (seq) - ibyte); |
e517f19d GM |
1791 | cbytes = CHAR_BYTES (c); |
1792 | } | |
1793 | else | |
1794 | { | |
d5db4077 | 1795 | c = SREF (seq, i); |
e517f19d GM |
1796 | cbytes = 1; |
1797 | } | |
59f953a2 | 1798 | |
e517f19d GM |
1799 | if (!INTEGERP (elt) || c != XINT (elt)) |
1800 | { | |
08663750 KR |
1801 | unsigned char *from = SDATA (seq) + ibyte; |
1802 | unsigned char *to = SDATA (tem) + nbytes; | |
e517f19d | 1803 | EMACS_INT n; |
59f953a2 | 1804 | |
e517f19d GM |
1805 | ++nchars; |
1806 | nbytes += cbytes; | |
59f953a2 | 1807 | |
e517f19d GM |
1808 | for (n = cbytes; n--; ) |
1809 | *to++ = *from++; | |
1810 | } | |
1811 | } | |
1812 | ||
1813 | seq = tem; | |
1e134a5f | 1814 | } |
1e134a5f | 1815 | } |
e517f19d GM |
1816 | else |
1817 | { | |
1818 | Lisp_Object tail, prev; | |
1819 | ||
1820 | for (tail = seq, prev = Qnil; !NILP (tail); tail = XCDR (tail)) | |
1821 | { | |
1822 | if (!CONSP (tail)) | |
1823 | wrong_type_argument (Qlistp, seq); | |
59f953a2 | 1824 | |
e517f19d GM |
1825 | if (!NILP (Fequal (elt, XCAR (tail)))) |
1826 | { | |
1827 | if (NILP (prev)) | |
1828 | seq = XCDR (tail); | |
1829 | else | |
1830 | Fsetcdr (prev, XCDR (tail)); | |
1831 | } | |
1832 | else | |
1833 | prev = tail; | |
1834 | QUIT; | |
1835 | } | |
1836 | } | |
59f953a2 | 1837 | |
e517f19d | 1838 | return seq; |
1e134a5f RM |
1839 | } |
1840 | ||
7b863bd5 | 1841 | DEFUN ("nreverse", Fnreverse, Snreverse, 1, 1, 0, |
e9d8ddc9 MB |
1842 | doc: /* Reverse LIST by modifying cdr pointers. |
1843 | Returns the beginning of the reversed list. */) | |
1844 | (list) | |
7b863bd5 JB |
1845 | Lisp_Object list; |
1846 | { | |
1847 | register Lisp_Object prev, tail, next; | |
1848 | ||
265a9e55 | 1849 | if (NILP (list)) return list; |
7b863bd5 JB |
1850 | prev = Qnil; |
1851 | tail = list; | |
265a9e55 | 1852 | while (!NILP (tail)) |
7b863bd5 JB |
1853 | { |
1854 | QUIT; | |
71a8e74b DL |
1855 | if (! CONSP (tail)) |
1856 | wrong_type_argument (Qlistp, list); | |
1857 | next = XCDR (tail); | |
7b863bd5 JB |
1858 | Fsetcdr (tail, prev); |
1859 | prev = tail; | |
1860 | tail = next; | |
1861 | } | |
1862 | return prev; | |
1863 | } | |
1864 | ||
1865 | DEFUN ("reverse", Freverse, Sreverse, 1, 1, 0, | |
462a5e3a | 1866 | doc: /* Reverse LIST, copying. Returns the beginning of the reversed list. |
e9d8ddc9 MB |
1867 | See also the function `nreverse', which is used more often. */) |
1868 | (list) | |
7b863bd5 JB |
1869 | Lisp_Object list; |
1870 | { | |
9d14ae76 | 1871 | Lisp_Object new; |
7b863bd5 | 1872 | |
70949dac | 1873 | for (new = Qnil; CONSP (list); list = XCDR (list)) |
5c3ea973 DL |
1874 | { |
1875 | QUIT; | |
1876 | new = Fcons (XCAR (list), new); | |
1877 | } | |
9d14ae76 RS |
1878 | if (!NILP (list)) |
1879 | wrong_type_argument (Qconsp, list); | |
1880 | return new; | |
7b863bd5 JB |
1881 | } |
1882 | \f | |
1883 | Lisp_Object merge (); | |
1884 | ||
1885 | DEFUN ("sort", Fsort, Ssort, 2, 2, 0, | |
e9d8ddc9 | 1886 | doc: /* Sort LIST, stably, comparing elements using PREDICATE. |
47cebab1 GM |
1887 | Returns the sorted list. LIST is modified by side effects. |
1888 | PREDICATE is called with two elements of LIST, and should return t | |
e9d8ddc9 MB |
1889 | if the first element is "less" than the second. */) |
1890 | (list, predicate) | |
88fe8140 | 1891 | Lisp_Object list, predicate; |
7b863bd5 JB |
1892 | { |
1893 | Lisp_Object front, back; | |
1894 | register Lisp_Object len, tem; | |
1895 | struct gcpro gcpro1, gcpro2; | |
1896 | register int length; | |
1897 | ||
1898 | front = list; | |
1899 | len = Flength (list); | |
1900 | length = XINT (len); | |
1901 | if (length < 2) | |
1902 | return list; | |
1903 | ||
1904 | XSETINT (len, (length / 2) - 1); | |
1905 | tem = Fnthcdr (len, list); | |
1906 | back = Fcdr (tem); | |
1907 | Fsetcdr (tem, Qnil); | |
1908 | ||
1909 | GCPRO2 (front, back); | |
88fe8140 EN |
1910 | front = Fsort (front, predicate); |
1911 | back = Fsort (back, predicate); | |
7b863bd5 | 1912 | UNGCPRO; |
88fe8140 | 1913 | return merge (front, back, predicate); |
7b863bd5 JB |
1914 | } |
1915 | ||
1916 | Lisp_Object | |
1917 | merge (org_l1, org_l2, pred) | |
1918 | Lisp_Object org_l1, org_l2; | |
1919 | Lisp_Object pred; | |
1920 | { | |
1921 | Lisp_Object value; | |
1922 | register Lisp_Object tail; | |
1923 | Lisp_Object tem; | |
1924 | register Lisp_Object l1, l2; | |
1925 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
1926 | ||
1927 | l1 = org_l1; | |
1928 | l2 = org_l2; | |
1929 | tail = Qnil; | |
1930 | value = Qnil; | |
1931 | ||
1932 | /* It is sufficient to protect org_l1 and org_l2. | |
1933 | When l1 and l2 are updated, we copy the new values | |
1934 | back into the org_ vars. */ | |
1935 | GCPRO4 (org_l1, org_l2, pred, value); | |
1936 | ||
1937 | while (1) | |
1938 | { | |
265a9e55 | 1939 | if (NILP (l1)) |
7b863bd5 JB |
1940 | { |
1941 | UNGCPRO; | |
265a9e55 | 1942 | if (NILP (tail)) |
7b863bd5 JB |
1943 | return l2; |
1944 | Fsetcdr (tail, l2); | |
1945 | return value; | |
1946 | } | |
265a9e55 | 1947 | if (NILP (l2)) |
7b863bd5 JB |
1948 | { |
1949 | UNGCPRO; | |
265a9e55 | 1950 | if (NILP (tail)) |
7b863bd5 JB |
1951 | return l1; |
1952 | Fsetcdr (tail, l1); | |
1953 | return value; | |
1954 | } | |
1955 | tem = call2 (pred, Fcar (l2), Fcar (l1)); | |
265a9e55 | 1956 | if (NILP (tem)) |
7b863bd5 JB |
1957 | { |
1958 | tem = l1; | |
1959 | l1 = Fcdr (l1); | |
1960 | org_l1 = l1; | |
1961 | } | |
1962 | else | |
1963 | { | |
1964 | tem = l2; | |
1965 | l2 = Fcdr (l2); | |
1966 | org_l2 = l2; | |
1967 | } | |
265a9e55 | 1968 | if (NILP (tail)) |
7b863bd5 JB |
1969 | value = tem; |
1970 | else | |
1971 | Fsetcdr (tail, tem); | |
1972 | tail = tem; | |
1973 | } | |
1974 | } | |
be9d483d | 1975 | |
2d6fabfc | 1976 | \f |
be9d483d | 1977 | DEFUN ("plist-get", Fplist_get, Splist_get, 2, 2, 0, |
e9d8ddc9 | 1978 | doc: /* Extract a value from a property list. |
47cebab1 GM |
1979 | PLIST is a property list, which is a list of the form |
1980 | \(PROP1 VALUE1 PROP2 VALUE2...). This function returns the value | |
1981 | corresponding to the given PROP, or nil if PROP is not | |
e9d8ddc9 MB |
1982 | one of the properties on the list. */) |
1983 | (plist, prop) | |
1fbb64aa | 1984 | Lisp_Object plist; |
2d6fabfc | 1985 | Lisp_Object prop; |
7b863bd5 | 1986 | { |
2d6fabfc | 1987 | Lisp_Object tail; |
91f78c99 | 1988 | |
2d6fabfc GM |
1989 | for (tail = plist; |
1990 | CONSP (tail) && CONSP (XCDR (tail)); | |
1991 | tail = XCDR (XCDR (tail))) | |
7b863bd5 | 1992 | { |
2d6fabfc GM |
1993 | if (EQ (prop, XCAR (tail))) |
1994 | return XCAR (XCDR (tail)); | |
ec2423c9 GM |
1995 | |
1996 | /* This function can be called asynchronously | |
1997 | (setup_coding_system). Don't QUIT in that case. */ | |
1998 | if (!interrupt_input_blocked) | |
1999 | QUIT; | |
7b863bd5 | 2000 | } |
2d6fabfc GM |
2001 | |
2002 | if (!NILP (tail)) | |
2003 | wrong_type_argument (Qlistp, prop); | |
91f78c99 | 2004 | |
7b863bd5 JB |
2005 | return Qnil; |
2006 | } | |
2007 | ||
be9d483d | 2008 | DEFUN ("get", Fget, Sget, 2, 2, 0, |
e9d8ddc9 MB |
2009 | doc: /* Return the value of SYMBOL's PROPNAME property. |
2010 | This is the last value stored with `(put SYMBOL PROPNAME VALUE)'. */) | |
2011 | (symbol, propname) | |
c07289e0 | 2012 | Lisp_Object symbol, propname; |
be9d483d | 2013 | { |
b7826503 | 2014 | CHECK_SYMBOL (symbol); |
c07289e0 | 2015 | return Fplist_get (XSYMBOL (symbol)->plist, propname); |
be9d483d BG |
2016 | } |
2017 | ||
2018 | DEFUN ("plist-put", Fplist_put, Splist_put, 3, 3, 0, | |
e9d8ddc9 | 2019 | doc: /* Change value in PLIST of PROP to VAL. |
47cebab1 GM |
2020 | PLIST is a property list, which is a list of the form |
2021 | \(PROP1 VALUE1 PROP2 VALUE2 ...). PROP is a symbol and VAL is any object. | |
2022 | If PROP is already a property on the list, its value is set to VAL, | |
2023 | otherwise the new PROP VAL pair is added. The new plist is returned; | |
2024 | use `(setq x (plist-put x prop val))' to be sure to use the new value. | |
e9d8ddc9 MB |
2025 | The PLIST is modified by side effects. */) |
2026 | (plist, prop, val) | |
b4f334f7 KH |
2027 | Lisp_Object plist; |
2028 | register Lisp_Object prop; | |
2029 | Lisp_Object val; | |
7b863bd5 JB |
2030 | { |
2031 | register Lisp_Object tail, prev; | |
2032 | Lisp_Object newcell; | |
2033 | prev = Qnil; | |
70949dac KR |
2034 | for (tail = plist; CONSP (tail) && CONSP (XCDR (tail)); |
2035 | tail = XCDR (XCDR (tail))) | |
7b863bd5 | 2036 | { |
70949dac | 2037 | if (EQ (prop, XCAR (tail))) |
be9d483d | 2038 | { |
70949dac | 2039 | Fsetcar (XCDR (tail), val); |
be9d483d BG |
2040 | return plist; |
2041 | } | |
91f78c99 | 2042 | |
7b863bd5 | 2043 | prev = tail; |
2d6fabfc | 2044 | QUIT; |
7b863bd5 JB |
2045 | } |
2046 | newcell = Fcons (prop, Fcons (val, Qnil)); | |
265a9e55 | 2047 | if (NILP (prev)) |
be9d483d | 2048 | return newcell; |
7b863bd5 | 2049 | else |
70949dac | 2050 | Fsetcdr (XCDR (prev), newcell); |
be9d483d BG |
2051 | return plist; |
2052 | } | |
2053 | ||
2054 | DEFUN ("put", Fput, Sput, 3, 3, 0, | |
e9d8ddc9 MB |
2055 | doc: /* Store SYMBOL's PROPNAME property with value VALUE. |
2056 | It can be retrieved with `(get SYMBOL PROPNAME)'. */) | |
2057 | (symbol, propname, value) | |
c07289e0 | 2058 | Lisp_Object symbol, propname, value; |
be9d483d | 2059 | { |
b7826503 | 2060 | CHECK_SYMBOL (symbol); |
c07289e0 RS |
2061 | XSYMBOL (symbol)->plist |
2062 | = Fplist_put (XSYMBOL (symbol)->plist, propname, value); | |
2063 | return value; | |
7b863bd5 | 2064 | } |
aebf4d42 RS |
2065 | \f |
2066 | DEFUN ("lax-plist-get", Flax_plist_get, Slax_plist_get, 2, 2, 0, | |
2067 | doc: /* Extract a value from a property list, comparing with `equal'. | |
2068 | PLIST is a property list, which is a list of the form | |
2069 | \(PROP1 VALUE1 PROP2 VALUE2...). This function returns the value | |
2070 | corresponding to the given PROP, or nil if PROP is not | |
2071 | one of the properties on the list. */) | |
2072 | (plist, prop) | |
2073 | Lisp_Object plist; | |
2074 | Lisp_Object prop; | |
2075 | { | |
2076 | Lisp_Object tail; | |
91f78c99 | 2077 | |
aebf4d42 RS |
2078 | for (tail = plist; |
2079 | CONSP (tail) && CONSP (XCDR (tail)); | |
2080 | tail = XCDR (XCDR (tail))) | |
2081 | { | |
2082 | if (! NILP (Fequal (prop, XCAR (tail)))) | |
2083 | return XCAR (XCDR (tail)); | |
2084 | ||
2085 | QUIT; | |
2086 | } | |
2087 | ||
2088 | if (!NILP (tail)) | |
2089 | wrong_type_argument (Qlistp, prop); | |
91f78c99 | 2090 | |
aebf4d42 RS |
2091 | return Qnil; |
2092 | } | |
7b863bd5 | 2093 | |
aebf4d42 RS |
2094 | DEFUN ("lax-plist-put", Flax_plist_put, Slax_plist_put, 3, 3, 0, |
2095 | doc: /* Change value in PLIST of PROP to VAL, comparing with `equal'. | |
2096 | PLIST is a property list, which is a list of the form | |
9e76ae05 | 2097 | \(PROP1 VALUE1 PROP2 VALUE2 ...). PROP and VAL are any objects. |
aebf4d42 RS |
2098 | If PROP is already a property on the list, its value is set to VAL, |
2099 | otherwise the new PROP VAL pair is added. The new plist is returned; | |
2100 | use `(setq x (lax-plist-put x prop val))' to be sure to use the new value. | |
2101 | The PLIST is modified by side effects. */) | |
2102 | (plist, prop, val) | |
2103 | Lisp_Object plist; | |
2104 | register Lisp_Object prop; | |
2105 | Lisp_Object val; | |
2106 | { | |
2107 | register Lisp_Object tail, prev; | |
2108 | Lisp_Object newcell; | |
2109 | prev = Qnil; | |
2110 | for (tail = plist; CONSP (tail) && CONSP (XCDR (tail)); | |
2111 | tail = XCDR (XCDR (tail))) | |
2112 | { | |
2113 | if (! NILP (Fequal (prop, XCAR (tail)))) | |
2114 | { | |
2115 | Fsetcar (XCDR (tail), val); | |
2116 | return plist; | |
2117 | } | |
91f78c99 | 2118 | |
aebf4d42 RS |
2119 | prev = tail; |
2120 | QUIT; | |
2121 | } | |
2122 | newcell = Fcons (prop, Fcons (val, Qnil)); | |
2123 | if (NILP (prev)) | |
2124 | return newcell; | |
2125 | else | |
2126 | Fsetcdr (XCDR (prev), newcell); | |
2127 | return plist; | |
2128 | } | |
2129 | \f | |
7b863bd5 | 2130 | DEFUN ("equal", Fequal, Sequal, 2, 2, 0, |
e9d8ddc9 | 2131 | doc: /* Return t if two Lisp objects have similar structure and contents. |
47cebab1 GM |
2132 | They must have the same data type. |
2133 | Conses are compared by comparing the cars and the cdrs. | |
2134 | Vectors and strings are compared element by element. | |
2135 | Numbers are compared by value, but integers cannot equal floats. | |
2136 | (Use `=' if you want integers and floats to be able to be equal.) | |
e9d8ddc9 MB |
2137 | Symbols must match exactly. */) |
2138 | (o1, o2) | |
7b863bd5 JB |
2139 | register Lisp_Object o1, o2; |
2140 | { | |
6cb9cafb | 2141 | return internal_equal (o1, o2, 0) ? Qt : Qnil; |
e0f5cf5a RS |
2142 | } |
2143 | ||
6cb9cafb | 2144 | static int |
e0f5cf5a RS |
2145 | internal_equal (o1, o2, depth) |
2146 | register Lisp_Object o1, o2; | |
2147 | int depth; | |
2148 | { | |
2149 | if (depth > 200) | |
2150 | error ("Stack overflow in equal"); | |
4ff1aed9 | 2151 | |
6cb9cafb | 2152 | tail_recurse: |
7b863bd5 | 2153 | QUIT; |
4ff1aed9 RS |
2154 | if (EQ (o1, o2)) |
2155 | return 1; | |
2156 | if (XTYPE (o1) != XTYPE (o2)) | |
2157 | return 0; | |
2158 | ||
2159 | switch (XTYPE (o1)) | |
2160 | { | |
4ff1aed9 RS |
2161 | case Lisp_Float: |
2162 | return (extract_float (o1) == extract_float (o2)); | |
4ff1aed9 RS |
2163 | |
2164 | case Lisp_Cons: | |
70949dac | 2165 | if (!internal_equal (XCAR (o1), XCAR (o2), depth + 1)) |
4cab5074 | 2166 | return 0; |
70949dac KR |
2167 | o1 = XCDR (o1); |
2168 | o2 = XCDR (o2); | |
4cab5074 | 2169 | goto tail_recurse; |
4ff1aed9 RS |
2170 | |
2171 | case Lisp_Misc: | |
81d1fba6 | 2172 | if (XMISCTYPE (o1) != XMISCTYPE (o2)) |
6cb9cafb | 2173 | return 0; |
4ff1aed9 | 2174 | if (OVERLAYP (o1)) |
7b863bd5 | 2175 | { |
e23f814f | 2176 | if (!internal_equal (OVERLAY_START (o1), OVERLAY_START (o2), |
4ff1aed9 | 2177 | depth + 1) |
e23f814f | 2178 | || !internal_equal (OVERLAY_END (o1), OVERLAY_END (o2), |
4ff1aed9 | 2179 | depth + 1)) |
6cb9cafb | 2180 | return 0; |
4ff1aed9 RS |
2181 | o1 = XOVERLAY (o1)->plist; |
2182 | o2 = XOVERLAY (o2)->plist; | |
2183 | goto tail_recurse; | |
7b863bd5 | 2184 | } |
4ff1aed9 RS |
2185 | if (MARKERP (o1)) |
2186 | { | |
2187 | return (XMARKER (o1)->buffer == XMARKER (o2)->buffer | |
2188 | && (XMARKER (o1)->buffer == 0 | |
6ced1284 | 2189 | || XMARKER (o1)->bytepos == XMARKER (o2)->bytepos)); |
4ff1aed9 RS |
2190 | } |
2191 | break; | |
2192 | ||
2193 | case Lisp_Vectorlike: | |
4cab5074 KH |
2194 | { |
2195 | register int i, size; | |
2196 | size = XVECTOR (o1)->size; | |
2197 | /* Pseudovectors have the type encoded in the size field, so this test | |
2198 | actually checks that the objects have the same type as well as the | |
2199 | same size. */ | |
2200 | if (XVECTOR (o2)->size != size) | |
2201 | return 0; | |
e03f7933 RS |
2202 | /* Boolvectors are compared much like strings. */ |
2203 | if (BOOL_VECTOR_P (o1)) | |
2204 | { | |
e03f7933 | 2205 | int size_in_chars |
e22e4283 | 2206 | = (XBOOL_VECTOR (o1)->size + BITS_PER_CHAR - 1) / BITS_PER_CHAR; |
e03f7933 RS |
2207 | |
2208 | if (XBOOL_VECTOR (o1)->size != XBOOL_VECTOR (o2)->size) | |
2209 | return 0; | |
2210 | if (bcmp (XBOOL_VECTOR (o1)->data, XBOOL_VECTOR (o2)->data, | |
2211 | size_in_chars)) | |
2212 | return 0; | |
2213 | return 1; | |
2214 | } | |
ed73fcc1 | 2215 | if (WINDOW_CONFIGURATIONP (o1)) |
48646924 | 2216 | return compare_window_configurations (o1, o2, 0); |
e03f7933 RS |
2217 | |
2218 | /* Aside from them, only true vectors, char-tables, and compiled | |
2219 | functions are sensible to compare, so eliminate the others now. */ | |
4cab5074 KH |
2220 | if (size & PSEUDOVECTOR_FLAG) |
2221 | { | |
e03f7933 | 2222 | if (!(size & (PVEC_COMPILED | PVEC_CHAR_TABLE))) |
4cab5074 KH |
2223 | return 0; |
2224 | size &= PSEUDOVECTOR_SIZE_MASK; | |
2225 | } | |
2226 | for (i = 0; i < size; i++) | |
2227 | { | |
2228 | Lisp_Object v1, v2; | |
2229 | v1 = XVECTOR (o1)->contents [i]; | |
2230 | v2 = XVECTOR (o2)->contents [i]; | |
2231 | if (!internal_equal (v1, v2, depth + 1)) | |
2232 | return 0; | |
2233 | } | |
2234 | return 1; | |
2235 | } | |
4ff1aed9 RS |
2236 | break; |
2237 | ||
2238 | case Lisp_String: | |
d5db4077 | 2239 | if (SCHARS (o1) != SCHARS (o2)) |
4cab5074 | 2240 | return 0; |
d5db4077 | 2241 | if (SBYTES (o1) != SBYTES (o2)) |
ea35ce3d | 2242 | return 0; |
d5db4077 KR |
2243 | if (bcmp (SDATA (o1), SDATA (o2), |
2244 | SBYTES (o1))) | |
4cab5074 | 2245 | return 0; |
4cab5074 | 2246 | return 1; |
093386ca GM |
2247 | |
2248 | case Lisp_Int: | |
2249 | case Lisp_Symbol: | |
2250 | case Lisp_Type_Limit: | |
2251 | break; | |
7b863bd5 | 2252 | } |
91f78c99 | 2253 | |
6cb9cafb | 2254 | return 0; |
7b863bd5 JB |
2255 | } |
2256 | \f | |
2e34157c RS |
2257 | extern Lisp_Object Fmake_char_internal (); |
2258 | ||
7b863bd5 | 2259 | DEFUN ("fillarray", Ffillarray, Sfillarray, 2, 2, 0, |
e9d8ddc9 MB |
2260 | doc: /* Store each element of ARRAY with ITEM. |
2261 | ARRAY is a vector, string, char-table, or bool-vector. */) | |
2262 | (array, item) | |
7b863bd5 JB |
2263 | Lisp_Object array, item; |
2264 | { | |
2265 | register int size, index, charval; | |
2266 | retry: | |
7650760e | 2267 | if (VECTORP (array)) |
7b863bd5 JB |
2268 | { |
2269 | register Lisp_Object *p = XVECTOR (array)->contents; | |
2270 | size = XVECTOR (array)->size; | |
2271 | for (index = 0; index < size; index++) | |
2272 | p[index] = item; | |
2273 | } | |
e03f7933 RS |
2274 | else if (CHAR_TABLE_P (array)) |
2275 | { | |
2276 | register Lisp_Object *p = XCHAR_TABLE (array)->contents; | |
2277 | size = CHAR_TABLE_ORDINARY_SLOTS; | |
2278 | for (index = 0; index < size; index++) | |
2279 | p[index] = item; | |
2280 | XCHAR_TABLE (array)->defalt = Qnil; | |
2281 | } | |
7650760e | 2282 | else if (STRINGP (array)) |
7b863bd5 | 2283 | { |
d5db4077 | 2284 | register unsigned char *p = SDATA (array); |
b7826503 | 2285 | CHECK_NUMBER (item); |
7b863bd5 | 2286 | charval = XINT (item); |
d5db4077 | 2287 | size = SCHARS (array); |
57247650 KH |
2288 | if (STRING_MULTIBYTE (array)) |
2289 | { | |
64a5094a KH |
2290 | unsigned char str[MAX_MULTIBYTE_LENGTH]; |
2291 | int len = CHAR_STRING (charval, str); | |
d5db4077 | 2292 | int size_byte = SBYTES (array); |
57247650 | 2293 | unsigned char *p1 = p, *endp = p + size_byte; |
95b8aba7 | 2294 | int i; |
57247650 | 2295 | |
95b8aba7 KH |
2296 | if (size != size_byte) |
2297 | while (p1 < endp) | |
2298 | { | |
2299 | int this_len = MULTIBYTE_FORM_LENGTH (p1, endp - p1); | |
2300 | if (len != this_len) | |
2301 | error ("Attempt to change byte length of a string"); | |
2302 | p1 += this_len; | |
2303 | } | |
57247650 KH |
2304 | for (i = 0; i < size_byte; i++) |
2305 | *p++ = str[i % len]; | |
2306 | } | |
2307 | else | |
2308 | for (index = 0; index < size; index++) | |
2309 | p[index] = charval; | |
7b863bd5 | 2310 | } |
e03f7933 RS |
2311 | else if (BOOL_VECTOR_P (array)) |
2312 | { | |
2313 | register unsigned char *p = XBOOL_VECTOR (array)->data; | |
e03f7933 | 2314 | int size_in_chars |
e22e4283 | 2315 | = (XBOOL_VECTOR (array)->size + BITS_PER_CHAR - 1) / BITS_PER_CHAR; |
e03f7933 RS |
2316 | |
2317 | charval = (! NILP (item) ? -1 : 0); | |
2318 | for (index = 0; index < size_in_chars; index++) | |
2319 | p[index] = charval; | |
2320 | } | |
7b863bd5 JB |
2321 | else |
2322 | { | |
2323 | array = wrong_type_argument (Qarrayp, array); | |
2324 | goto retry; | |
2325 | } | |
2326 | return array; | |
2327 | } | |
85cad579 RS |
2328 | |
2329 | DEFUN ("clear-string", Fclear_string, Sclear_string, | |
2330 | 1, 1, 0, | |
2331 | doc: /* Clear the contents of STRING. | |
2332 | This makes STRING unibyte and may change its length. */) | |
2333 | (string) | |
2334 | Lisp_Object string; | |
2335 | { | |
2336 | int len = SBYTES (string); | |
2337 | bzero (SDATA (string), len); | |
2338 | STRING_SET_CHARS (string, len); | |
2339 | STRING_SET_UNIBYTE (string); | |
2340 | return Qnil; | |
2341 | } | |
ea35ce3d | 2342 | \f |
999de246 RS |
2343 | DEFUN ("char-table-subtype", Fchar_table_subtype, Schar_table_subtype, |
2344 | 1, 1, 0, | |
e9d8ddc9 MB |
2345 | doc: /* Return the subtype of char-table CHAR-TABLE. The value is a symbol. */) |
2346 | (char_table) | |
88fe8140 | 2347 | Lisp_Object char_table; |
999de246 | 2348 | { |
b7826503 | 2349 | CHECK_CHAR_TABLE (char_table); |
999de246 | 2350 | |
88fe8140 | 2351 | return XCHAR_TABLE (char_table)->purpose; |
999de246 RS |
2352 | } |
2353 | ||
e03f7933 RS |
2354 | DEFUN ("char-table-parent", Fchar_table_parent, Schar_table_parent, |
2355 | 1, 1, 0, | |
e9d8ddc9 | 2356 | doc: /* Return the parent char-table of CHAR-TABLE. |
47cebab1 GM |
2357 | The value is either nil or another char-table. |
2358 | If CHAR-TABLE holds nil for a given character, | |
2359 | then the actual applicable value is inherited from the parent char-table | |
e9d8ddc9 MB |
2360 | \(or from its parents, if necessary). */) |
2361 | (char_table) | |
88fe8140 | 2362 | Lisp_Object char_table; |
e03f7933 | 2363 | { |
b7826503 | 2364 | CHECK_CHAR_TABLE (char_table); |
e03f7933 | 2365 | |
88fe8140 | 2366 | return XCHAR_TABLE (char_table)->parent; |
e03f7933 RS |
2367 | } |
2368 | ||
2369 | DEFUN ("set-char-table-parent", Fset_char_table_parent, Sset_char_table_parent, | |
2370 | 2, 2, 0, | |
e9d8ddc9 MB |
2371 | doc: /* Set the parent char-table of CHAR-TABLE to PARENT. |
2372 | PARENT must be either nil or another char-table. */) | |
2373 | (char_table, parent) | |
88fe8140 | 2374 | Lisp_Object char_table, parent; |
e03f7933 RS |
2375 | { |
2376 | Lisp_Object temp; | |
2377 | ||
b7826503 | 2378 | CHECK_CHAR_TABLE (char_table); |
e03f7933 | 2379 | |
c8640abf RS |
2380 | if (!NILP (parent)) |
2381 | { | |
b7826503 | 2382 | CHECK_CHAR_TABLE (parent); |
c8640abf RS |
2383 | |
2384 | for (temp = parent; !NILP (temp); temp = XCHAR_TABLE (temp)->parent) | |
55cc974d | 2385 | if (EQ (temp, char_table)) |
c8640abf RS |
2386 | error ("Attempt to make a chartable be its own parent"); |
2387 | } | |
e03f7933 | 2388 | |
88fe8140 | 2389 | XCHAR_TABLE (char_table)->parent = parent; |
e03f7933 RS |
2390 | |
2391 | return parent; | |
2392 | } | |
2393 | ||
2394 | DEFUN ("char-table-extra-slot", Fchar_table_extra_slot, Schar_table_extra_slot, | |
2395 | 2, 2, 0, | |
e9d8ddc9 MB |
2396 | doc: /* Return the value of CHAR-TABLE's extra-slot number N. */) |
2397 | (char_table, n) | |
88fe8140 | 2398 | Lisp_Object char_table, n; |
e03f7933 | 2399 | { |
b7826503 PJ |
2400 | CHECK_CHAR_TABLE (char_table); |
2401 | CHECK_NUMBER (n); | |
e03f7933 | 2402 | if (XINT (n) < 0 |
88fe8140 EN |
2403 | || XINT (n) >= CHAR_TABLE_EXTRA_SLOTS (XCHAR_TABLE (char_table))) |
2404 | args_out_of_range (char_table, n); | |
e03f7933 | 2405 | |
88fe8140 | 2406 | return XCHAR_TABLE (char_table)->extras[XINT (n)]; |
e03f7933 RS |
2407 | } |
2408 | ||
2409 | DEFUN ("set-char-table-extra-slot", Fset_char_table_extra_slot, | |
2410 | Sset_char_table_extra_slot, | |
2411 | 3, 3, 0, | |
e9d8ddc9 MB |
2412 | doc: /* Set CHAR-TABLE's extra-slot number N to VALUE. */) |
2413 | (char_table, n, value) | |
88fe8140 | 2414 | Lisp_Object char_table, n, value; |
e03f7933 | 2415 | { |
b7826503 PJ |
2416 | CHECK_CHAR_TABLE (char_table); |
2417 | CHECK_NUMBER (n); | |
e03f7933 | 2418 | if (XINT (n) < 0 |
88fe8140 EN |
2419 | || XINT (n) >= CHAR_TABLE_EXTRA_SLOTS (XCHAR_TABLE (char_table))) |
2420 | args_out_of_range (char_table, n); | |
e03f7933 | 2421 | |
88fe8140 | 2422 | return XCHAR_TABLE (char_table)->extras[XINT (n)] = value; |
e03f7933 | 2423 | } |
ea35ce3d | 2424 | \f |
999de246 RS |
2425 | DEFUN ("char-table-range", Fchar_table_range, Schar_table_range, |
2426 | 2, 2, 0, | |
e9d8ddc9 | 2427 | doc: /* Return the value in CHAR-TABLE for a range of characters RANGE. |
47cebab1 GM |
2428 | RANGE should be nil (for the default value) |
2429 | a vector which identifies a character set or a row of a character set, | |
e9d8ddc9 MB |
2430 | a character set name, or a character code. */) |
2431 | (char_table, range) | |
88fe8140 | 2432 | Lisp_Object char_table, range; |
999de246 | 2433 | { |
b7826503 | 2434 | CHECK_CHAR_TABLE (char_table); |
b4f334f7 | 2435 | |
999de246 | 2436 | if (EQ (range, Qnil)) |
88fe8140 | 2437 | return XCHAR_TABLE (char_table)->defalt; |
999de246 | 2438 | else if (INTEGERP (range)) |
88fe8140 | 2439 | return Faref (char_table, range); |
6d475204 RS |
2440 | else if (SYMBOLP (range)) |
2441 | { | |
2442 | Lisp_Object charset_info; | |
2443 | ||
2444 | charset_info = Fget (range, Qcharset); | |
b7826503 | 2445 | CHECK_VECTOR (charset_info); |
6d475204 | 2446 | |
21ab867f AS |
2447 | return Faref (char_table, |
2448 | make_number (XINT (XVECTOR (charset_info)->contents[0]) | |
2449 | + 128)); | |
6d475204 | 2450 | } |
999de246 RS |
2451 | else if (VECTORP (range)) |
2452 | { | |
e814a159 | 2453 | if (XVECTOR (range)->size == 1) |
21ab867f AS |
2454 | return Faref (char_table, |
2455 | make_number (XINT (XVECTOR (range)->contents[0]) + 128)); | |
e814a159 RS |
2456 | else |
2457 | { | |
2458 | int size = XVECTOR (range)->size; | |
2459 | Lisp_Object *val = XVECTOR (range)->contents; | |
2460 | Lisp_Object ch = Fmake_char_internal (size <= 0 ? Qnil : val[0], | |
2461 | size <= 1 ? Qnil : val[1], | |
2462 | size <= 2 ? Qnil : val[2]); | |
2463 | return Faref (char_table, ch); | |
2464 | } | |
999de246 RS |
2465 | } |
2466 | else | |
2467 | error ("Invalid RANGE argument to `char-table-range'"); | |
5c6740c9 | 2468 | return Qt; |
999de246 RS |
2469 | } |
2470 | ||
e03f7933 RS |
2471 | DEFUN ("set-char-table-range", Fset_char_table_range, Sset_char_table_range, |
2472 | 3, 3, 0, | |
e9d8ddc9 | 2473 | doc: /* Set the value in CHAR-TABLE for a range of characters RANGE to VALUE. |
47cebab1 GM |
2474 | RANGE should be t (for all characters), nil (for the default value) |
2475 | a vector which identifies a character set or a row of a character set, | |
e9d8ddc9 MB |
2476 | a coding system, or a character code. */) |
2477 | (char_table, range, value) | |
88fe8140 | 2478 | Lisp_Object char_table, range, value; |
e03f7933 RS |
2479 | { |
2480 | int i; | |
2481 | ||
b7826503 | 2482 | CHECK_CHAR_TABLE (char_table); |
b4f334f7 | 2483 | |
e03f7933 RS |
2484 | if (EQ (range, Qt)) |
2485 | for (i = 0; i < CHAR_TABLE_ORDINARY_SLOTS; i++) | |
88fe8140 | 2486 | XCHAR_TABLE (char_table)->contents[i] = value; |
e03f7933 | 2487 | else if (EQ (range, Qnil)) |
88fe8140 | 2488 | XCHAR_TABLE (char_table)->defalt = value; |
6d475204 RS |
2489 | else if (SYMBOLP (range)) |
2490 | { | |
2491 | Lisp_Object charset_info; | |
2492 | ||
2493 | charset_info = Fget (range, Qcharset); | |
b7826503 | 2494 | CHECK_VECTOR (charset_info); |
6d475204 | 2495 | |
21ab867f AS |
2496 | return Faset (char_table, |
2497 | make_number (XINT (XVECTOR (charset_info)->contents[0]) | |
2498 | + 128), | |
6d475204 RS |
2499 | value); |
2500 | } | |
e03f7933 | 2501 | else if (INTEGERP (range)) |
88fe8140 | 2502 | Faset (char_table, range, value); |
e03f7933 RS |
2503 | else if (VECTORP (range)) |
2504 | { | |
e814a159 | 2505 | if (XVECTOR (range)->size == 1) |
21ab867f AS |
2506 | return Faset (char_table, |
2507 | make_number (XINT (XVECTOR (range)->contents[0]) + 128), | |
2508 | value); | |
e814a159 RS |
2509 | else |
2510 | { | |
2511 | int size = XVECTOR (range)->size; | |
2512 | Lisp_Object *val = XVECTOR (range)->contents; | |
2513 | Lisp_Object ch = Fmake_char_internal (size <= 0 ? Qnil : val[0], | |
2514 | size <= 1 ? Qnil : val[1], | |
2515 | size <= 2 ? Qnil : val[2]); | |
2516 | return Faset (char_table, ch, value); | |
2517 | } | |
e03f7933 RS |
2518 | } |
2519 | else | |
2520 | error ("Invalid RANGE argument to `set-char-table-range'"); | |
2521 | ||
2522 | return value; | |
2523 | } | |
e1335ba2 KH |
2524 | |
2525 | DEFUN ("set-char-table-default", Fset_char_table_default, | |
2526 | Sset_char_table_default, 3, 3, 0, | |
30b1b0cf | 2527 | doc: /* Set the default value in CHAR-TABLE for generic character CH to VALUE. |
47cebab1 | 2528 | The generic character specifies the group of characters. |
30b1b0cf | 2529 | See also the documentation of `make-char'. */) |
e9d8ddc9 | 2530 | (char_table, ch, value) |
e1335ba2 KH |
2531 | Lisp_Object char_table, ch, value; |
2532 | { | |
ada0fa14 | 2533 | int c, charset, code1, code2; |
e1335ba2 KH |
2534 | Lisp_Object temp; |
2535 | ||
b7826503 PJ |
2536 | CHECK_CHAR_TABLE (char_table); |
2537 | CHECK_NUMBER (ch); | |
e1335ba2 KH |
2538 | |
2539 | c = XINT (ch); | |
2db66414 | 2540 | SPLIT_CHAR (c, charset, code1, code2); |
0da528a9 KH |
2541 | |
2542 | /* Since we may want to set the default value for a character set | |
2543 | not yet defined, we check only if the character set is in the | |
2544 | valid range or not, instead of it is already defined or not. */ | |
2545 | if (! CHARSET_VALID_P (charset)) | |
f71599f4 | 2546 | invalid_character (c); |
e1335ba2 KH |
2547 | |
2548 | if (charset == CHARSET_ASCII) | |
2549 | return (XCHAR_TABLE (char_table)->defalt = value); | |
2550 | ||
2551 | /* Even if C is not a generic char, we had better behave as if a | |
2552 | generic char is specified. */ | |
c1fd9232 | 2553 | if (!CHARSET_DEFINED_P (charset) || CHARSET_DIMENSION (charset) == 1) |
e1335ba2 KH |
2554 | code1 = 0; |
2555 | temp = XCHAR_TABLE (char_table)->contents[charset + 128]; | |
2556 | if (!code1) | |
2557 | { | |
2558 | if (SUB_CHAR_TABLE_P (temp)) | |
2559 | XCHAR_TABLE (temp)->defalt = value; | |
2560 | else | |
2561 | XCHAR_TABLE (char_table)->contents[charset + 128] = value; | |
2562 | return value; | |
2563 | } | |
1e70fc65 KH |
2564 | if (SUB_CHAR_TABLE_P (temp)) |
2565 | char_table = temp; | |
2566 | else | |
e1335ba2 | 2567 | char_table = (XCHAR_TABLE (char_table)->contents[charset + 128] |
1e70fc65 | 2568 | = make_sub_char_table (temp)); |
e1335ba2 KH |
2569 | temp = XCHAR_TABLE (char_table)->contents[code1]; |
2570 | if (SUB_CHAR_TABLE_P (temp)) | |
2571 | XCHAR_TABLE (temp)->defalt = value; | |
2572 | else | |
2573 | XCHAR_TABLE (char_table)->contents[code1] = value; | |
2574 | return value; | |
2575 | } | |
1d969a23 RS |
2576 | |
2577 | /* Look up the element in TABLE at index CH, | |
2578 | and return it as an integer. | |
2579 | If the element is nil, return CH itself. | |
2580 | (Actually we do that for any non-integer.) */ | |
2581 | ||
2582 | int | |
2583 | char_table_translate (table, ch) | |
2584 | Lisp_Object table; | |
2585 | int ch; | |
2586 | { | |
2587 | Lisp_Object value; | |
2588 | value = Faref (table, make_number (ch)); | |
2589 | if (! INTEGERP (value)) | |
2590 | return ch; | |
2591 | return XINT (value); | |
2592 | } | |
52ef6c89 KH |
2593 | |
2594 | static void | |
2595 | optimize_sub_char_table (table, chars) | |
2596 | Lisp_Object *table; | |
2597 | int chars; | |
2598 | { | |
2599 | Lisp_Object elt; | |
2600 | int from, to; | |
2601 | ||
2602 | if (chars == 94) | |
2603 | from = 33, to = 127; | |
2604 | else | |
2605 | from = 32, to = 128; | |
2606 | ||
2607 | if (!SUB_CHAR_TABLE_P (*table)) | |
2608 | return; | |
2609 | elt = XCHAR_TABLE (*table)->contents[from++]; | |
2610 | for (; from < to; from++) | |
2611 | if (NILP (Fequal (elt, XCHAR_TABLE (*table)->contents[from]))) | |
2612 | return; | |
2613 | *table = elt; | |
2614 | } | |
2615 | ||
2616 | DEFUN ("optimize-char-table", Foptimize_char_table, Soptimize_char_table, | |
e9d8ddc9 MB |
2617 | 1, 1, 0, doc: /* Optimize char table TABLE. */) |
2618 | (table) | |
52ef6c89 KH |
2619 | Lisp_Object table; |
2620 | { | |
2621 | Lisp_Object elt; | |
2622 | int dim; | |
2623 | int i, j; | |
2624 | ||
b7826503 | 2625 | CHECK_CHAR_TABLE (table); |
52ef6c89 KH |
2626 | |
2627 | for (i = CHAR_TABLE_SINGLE_BYTE_SLOTS; i < CHAR_TABLE_ORDINARY_SLOTS; i++) | |
2628 | { | |
2629 | elt = XCHAR_TABLE (table)->contents[i]; | |
2630 | if (!SUB_CHAR_TABLE_P (elt)) | |
2631 | continue; | |
4a8009a0 | 2632 | dim = CHARSET_DIMENSION (i - 128); |
52ef6c89 KH |
2633 | if (dim == 2) |
2634 | for (j = 32; j < SUB_CHAR_TABLE_ORDINARY_SLOTS; j++) | |
2635 | optimize_sub_char_table (XCHAR_TABLE (elt)->contents + j, dim); | |
2636 | optimize_sub_char_table (XCHAR_TABLE (table)->contents + i, dim); | |
2637 | } | |
2638 | return Qnil; | |
2639 | } | |
2640 | ||
e03f7933 | 2641 | \f |
46ed603f | 2642 | /* Map C_FUNCTION or FUNCTION over SUBTABLE, calling it for each |
c8640abf RS |
2643 | character or group of characters that share a value. |
2644 | DEPTH is the current depth in the originally specified | |
2645 | chartable, and INDICES contains the vector indices | |
46ed603f RS |
2646 | for the levels our callers have descended. |
2647 | ||
2648 | ARG is passed to C_FUNCTION when that is called. */ | |
c8640abf RS |
2649 | |
2650 | void | |
44356f63 | 2651 | map_char_table (c_function, function, table, subtable, arg, depth, indices) |
22e6f12b | 2652 | void (*c_function) P_ ((Lisp_Object, Lisp_Object, Lisp_Object)); |
44356f63 | 2653 | Lisp_Object function, table, subtable, arg, *indices; |
1847b19b | 2654 | int depth; |
e03f7933 | 2655 | { |
3720677d | 2656 | int i, to; |
e03f7933 | 2657 | |
a8283a4a | 2658 | if (depth == 0) |
3720677d KH |
2659 | { |
2660 | /* At first, handle ASCII and 8-bit European characters. */ | |
2661 | for (i = 0; i < CHAR_TABLE_SINGLE_BYTE_SLOTS; i++) | |
2662 | { | |
44356f63 RS |
2663 | Lisp_Object elt= XCHAR_TABLE (subtable)->contents[i]; |
2664 | if (NILP (elt)) | |
2665 | elt = XCHAR_TABLE (subtable)->defalt; | |
2666 | if (NILP (elt)) | |
2667 | elt = Faref (subtable, make_number (i)); | |
3720677d | 2668 | if (c_function) |
46ed603f | 2669 | (*c_function) (arg, make_number (i), elt); |
3720677d KH |
2670 | else |
2671 | call2 (function, make_number (i), elt); | |
2672 | } | |
ea35ce3d RS |
2673 | #if 0 /* If the char table has entries for higher characters, |
2674 | we should report them. */ | |
de86fcba KH |
2675 | if (NILP (current_buffer->enable_multibyte_characters)) |
2676 | return; | |
ea35ce3d | 2677 | #endif |
3720677d KH |
2678 | to = CHAR_TABLE_ORDINARY_SLOTS; |
2679 | } | |
a8283a4a | 2680 | else |
e03f7933 | 2681 | { |
a3b210c4 KH |
2682 | int charset = XFASTINT (indices[0]) - 128; |
2683 | ||
de86fcba | 2684 | i = 32; |
3720677d | 2685 | to = SUB_CHAR_TABLE_ORDINARY_SLOTS; |
a3b210c4 KH |
2686 | if (CHARSET_CHARS (charset) == 94) |
2687 | i++, to--; | |
e03f7933 RS |
2688 | } |
2689 | ||
7e798f25 | 2690 | for (; i < to; i++) |
e03f7933 | 2691 | { |
a3b210c4 KH |
2692 | Lisp_Object elt; |
2693 | int charset; | |
3720677d | 2694 | |
a3b210c4 | 2695 | elt = XCHAR_TABLE (subtable)->contents[i]; |
09ee221d | 2696 | XSETFASTINT (indices[depth], i); |
a3b210c4 | 2697 | charset = XFASTINT (indices[0]) - 128; |
df2fbceb KH |
2698 | if (depth == 0 |
2699 | && (!CHARSET_DEFINED_P (charset) | |
2700 | || charset == CHARSET_8_BIT_CONTROL | |
2701 | || charset == CHARSET_8_BIT_GRAPHIC)) | |
a3b210c4 | 2702 | continue; |
3720677d KH |
2703 | |
2704 | if (SUB_CHAR_TABLE_P (elt)) | |
2705 | { | |
2706 | if (depth >= 3) | |
2707 | error ("Too deep char table"); | |
44356f63 | 2708 | map_char_table (c_function, function, table, elt, arg, depth + 1, indices); |
3720677d | 2709 | } |
e03f7933 | 2710 | else |
a8283a4a | 2711 | { |
a3b210c4 | 2712 | int c1, c2, c; |
3720677d | 2713 | |
a3b210c4 KH |
2714 | c1 = depth >= 1 ? XFASTINT (indices[1]) : 0; |
2715 | c2 = depth >= 2 ? XFASTINT (indices[2]) : 0; | |
2efdd1b9 | 2716 | c = MAKE_CHAR (charset, c1, c2); |
fdf91be0 RS |
2717 | |
2718 | if (NILP (elt)) | |
2719 | elt = XCHAR_TABLE (subtable)->defalt; | |
2720 | if (NILP (elt)) | |
2721 | elt = Faref (table, make_number (c)); | |
2722 | ||
a3b210c4 KH |
2723 | if (c_function) |
2724 | (*c_function) (arg, make_number (c), elt); | |
2725 | else | |
2726 | call2 (function, make_number (c), elt); | |
b4f334f7 | 2727 | } |
e03f7933 RS |
2728 | } |
2729 | } | |
2730 | ||
e52bd6b7 SM |
2731 | static void void_call2 P_ ((Lisp_Object a, Lisp_Object b, Lisp_Object c)); |
2732 | static void | |
2733 | void_call2 (a, b, c) | |
2734 | Lisp_Object a, b, c; | |
2735 | { | |
2736 | call2 (a, b, c); | |
2737 | } | |
2738 | ||
e03f7933 | 2739 | DEFUN ("map-char-table", Fmap_char_table, Smap_char_table, |
47cebab1 | 2740 | 2, 2, 0, |
e9d8ddc9 | 2741 | doc: /* Call FUNCTION for each (normal and generic) characters in CHAR-TABLE. |
47cebab1 | 2742 | FUNCTION is called with two arguments--a key and a value. |
e9d8ddc9 MB |
2743 | The key is always a possible IDX argument to `aref'. */) |
2744 | (function, char_table) | |
88fe8140 | 2745 | Lisp_Object function, char_table; |
e03f7933 | 2746 | { |
3720677d | 2747 | /* The depth of char table is at most 3. */ |
7e798f25 KH |
2748 | Lisp_Object indices[3]; |
2749 | ||
b7826503 | 2750 | CHECK_CHAR_TABLE (char_table); |
e03f7933 | 2751 | |
e52bd6b7 SM |
2752 | /* When Lisp_Object is represented as a union, `call2' cannot directly |
2753 | be passed to map_char_table because it returns a Lisp_Object rather | |
2754 | than returning nothing. | |
2755 | Casting leads to crashes on some architectures. -stef */ | |
44356f63 | 2756 | map_char_table (void_call2, Qnil, char_table, char_table, function, 0, indices); |
e03f7933 RS |
2757 | return Qnil; |
2758 | } | |
2f729392 KH |
2759 | |
2760 | /* Return a value for character C in char-table TABLE. Store the | |
2761 | actual index for that value in *IDX. Ignore the default value of | |
2762 | TABLE. */ | |
2763 | ||
2764 | Lisp_Object | |
2765 | char_table_ref_and_index (table, c, idx) | |
2766 | Lisp_Object table; | |
2767 | int c, *idx; | |
2768 | { | |
2769 | int charset, c1, c2; | |
2770 | Lisp_Object elt; | |
2771 | ||
2772 | if (SINGLE_BYTE_CHAR_P (c)) | |
2773 | { | |
2774 | *idx = c; | |
2775 | return XCHAR_TABLE (table)->contents[c]; | |
2776 | } | |
2777 | SPLIT_CHAR (c, charset, c1, c2); | |
2778 | elt = XCHAR_TABLE (table)->contents[charset + 128]; | |
2779 | *idx = MAKE_CHAR (charset, 0, 0); | |
2780 | if (!SUB_CHAR_TABLE_P (elt)) | |
2781 | return elt; | |
2782 | if (c1 < 32 || NILP (XCHAR_TABLE (elt)->contents[c1])) | |
2783 | return XCHAR_TABLE (elt)->defalt; | |
2784 | elt = XCHAR_TABLE (elt)->contents[c1]; | |
2785 | *idx = MAKE_CHAR (charset, c1, 0); | |
2786 | if (!SUB_CHAR_TABLE_P (elt)) | |
2787 | return elt; | |
2788 | if (c2 < 32 || NILP (XCHAR_TABLE (elt)->contents[c2])) | |
2789 | return XCHAR_TABLE (elt)->defalt; | |
2790 | *idx = c; | |
2791 | return XCHAR_TABLE (elt)->contents[c2]; | |
2792 | } | |
2793 | ||
e03f7933 | 2794 | \f |
7b863bd5 JB |
2795 | /* ARGSUSED */ |
2796 | Lisp_Object | |
2797 | nconc2 (s1, s2) | |
2798 | Lisp_Object s1, s2; | |
2799 | { | |
2800 | #ifdef NO_ARG_ARRAY | |
2801 | Lisp_Object args[2]; | |
2802 | args[0] = s1; | |
2803 | args[1] = s2; | |
2804 | return Fnconc (2, args); | |
2805 | #else | |
2806 | return Fnconc (2, &s1); | |
2807 | #endif /* NO_ARG_ARRAY */ | |
2808 | } | |
2809 | ||
2810 | DEFUN ("nconc", Fnconc, Snconc, 0, MANY, 0, | |
e9d8ddc9 | 2811 | doc: /* Concatenate any number of lists by altering them. |
4bf8e2a3 MB |
2812 | Only the last argument is not altered, and need not be a list. |
2813 | usage: (nconc &rest LISTS) */) | |
e9d8ddc9 | 2814 | (nargs, args) |
7b863bd5 JB |
2815 | int nargs; |
2816 | Lisp_Object *args; | |
2817 | { | |
2818 | register int argnum; | |
2819 | register Lisp_Object tail, tem, val; | |
2820 | ||
093386ca | 2821 | val = tail = Qnil; |
7b863bd5 JB |
2822 | |
2823 | for (argnum = 0; argnum < nargs; argnum++) | |
2824 | { | |
2825 | tem = args[argnum]; | |
265a9e55 | 2826 | if (NILP (tem)) continue; |
7b863bd5 | 2827 | |
265a9e55 | 2828 | if (NILP (val)) |
7b863bd5 JB |
2829 | val = tem; |
2830 | ||
2831 | if (argnum + 1 == nargs) break; | |
2832 | ||
2833 | if (!CONSP (tem)) | |
2834 | tem = wrong_type_argument (Qlistp, tem); | |
2835 | ||
2836 | while (CONSP (tem)) | |
2837 | { | |
2838 | tail = tem; | |
cf42cb72 | 2839 | tem = XCDR (tail); |
7b863bd5 JB |
2840 | QUIT; |
2841 | } | |
2842 | ||
2843 | tem = args[argnum + 1]; | |
2844 | Fsetcdr (tail, tem); | |
265a9e55 | 2845 | if (NILP (tem)) |
7b863bd5 JB |
2846 | args[argnum + 1] = tail; |
2847 | } | |
2848 | ||
2849 | return val; | |
2850 | } | |
2851 | \f | |
2852 | /* This is the guts of all mapping functions. | |
ea35ce3d RS |
2853 | Apply FN to each element of SEQ, one by one, |
2854 | storing the results into elements of VALS, a C vector of Lisp_Objects. | |
2855 | LENI is the length of VALS, which should also be the length of SEQ. */ | |
7b863bd5 JB |
2856 | |
2857 | static void | |
2858 | mapcar1 (leni, vals, fn, seq) | |
2859 | int leni; | |
2860 | Lisp_Object *vals; | |
2861 | Lisp_Object fn, seq; | |
2862 | { | |
2863 | register Lisp_Object tail; | |
2864 | Lisp_Object dummy; | |
2865 | register int i; | |
2866 | struct gcpro gcpro1, gcpro2, gcpro3; | |
2867 | ||
f5c75033 DL |
2868 | if (vals) |
2869 | { | |
2870 | /* Don't let vals contain any garbage when GC happens. */ | |
2871 | for (i = 0; i < leni; i++) | |
2872 | vals[i] = Qnil; | |
7b863bd5 | 2873 | |
f5c75033 DL |
2874 | GCPRO3 (dummy, fn, seq); |
2875 | gcpro1.var = vals; | |
2876 | gcpro1.nvars = leni; | |
2877 | } | |
2878 | else | |
2879 | GCPRO2 (fn, seq); | |
7b863bd5 JB |
2880 | /* We need not explicitly protect `tail' because it is used only on lists, and |
2881 | 1) lists are not relocated and 2) the list is marked via `seq' so will not be freed */ | |
2882 | ||
7650760e | 2883 | if (VECTORP (seq)) |
7b863bd5 JB |
2884 | { |
2885 | for (i = 0; i < leni; i++) | |
2886 | { | |
2887 | dummy = XVECTOR (seq)->contents[i]; | |
f5c75033 DL |
2888 | dummy = call1 (fn, dummy); |
2889 | if (vals) | |
2890 | vals[i] = dummy; | |
7b863bd5 JB |
2891 | } |
2892 | } | |
33aa0881 KH |
2893 | else if (BOOL_VECTOR_P (seq)) |
2894 | { | |
2895 | for (i = 0; i < leni; i++) | |
2896 | { | |
2897 | int byte; | |
2898 | byte = XBOOL_VECTOR (seq)->data[i / BITS_PER_CHAR]; | |
2899 | if (byte & (1 << (i % BITS_PER_CHAR))) | |
2900 | dummy = Qt; | |
2901 | else | |
2902 | dummy = Qnil; | |
2903 | ||
f5c75033 DL |
2904 | dummy = call1 (fn, dummy); |
2905 | if (vals) | |
2906 | vals[i] = dummy; | |
33aa0881 KH |
2907 | } |
2908 | } | |
ea35ce3d RS |
2909 | else if (STRINGP (seq)) |
2910 | { | |
ea35ce3d RS |
2911 | int i_byte; |
2912 | ||
2913 | for (i = 0, i_byte = 0; i < leni;) | |
2914 | { | |
2915 | int c; | |
0ab6a3d8 KH |
2916 | int i_before = i; |
2917 | ||
2918 | FETCH_STRING_CHAR_ADVANCE (c, seq, i, i_byte); | |
ea35ce3d | 2919 | XSETFASTINT (dummy, c); |
f5c75033 DL |
2920 | dummy = call1 (fn, dummy); |
2921 | if (vals) | |
2922 | vals[i_before] = dummy; | |
ea35ce3d RS |
2923 | } |
2924 | } | |
7b863bd5 JB |
2925 | else /* Must be a list, since Flength did not get an error */ |
2926 | { | |
2927 | tail = seq; | |
2928 | for (i = 0; i < leni; i++) | |
2929 | { | |
f5c75033 DL |
2930 | dummy = call1 (fn, Fcar (tail)); |
2931 | if (vals) | |
2932 | vals[i] = dummy; | |
70949dac | 2933 | tail = XCDR (tail); |
7b863bd5 JB |
2934 | } |
2935 | } | |
2936 | ||
2937 | UNGCPRO; | |
2938 | } | |
2939 | ||
2940 | DEFUN ("mapconcat", Fmapconcat, Smapconcat, 3, 3, 0, | |
e9d8ddc9 | 2941 | doc: /* Apply FUNCTION to each element of SEQUENCE, and concat the results as strings. |
dd8d1e71 | 2942 | In between each pair of results, stick in SEPARATOR. Thus, " " as |
47cebab1 | 2943 | SEPARATOR results in spaces between the values returned by FUNCTION. |
e9d8ddc9 MB |
2944 | SEQUENCE may be a list, a vector, a bool-vector, or a string. */) |
2945 | (function, sequence, separator) | |
88fe8140 | 2946 | Lisp_Object function, sequence, separator; |
7b863bd5 JB |
2947 | { |
2948 | Lisp_Object len; | |
2949 | register int leni; | |
2950 | int nargs; | |
2951 | register Lisp_Object *args; | |
2952 | register int i; | |
2953 | struct gcpro gcpro1; | |
2954 | ||
88fe8140 | 2955 | len = Flength (sequence); |
7b863bd5 JB |
2956 | leni = XINT (len); |
2957 | nargs = leni + leni - 1; | |
2958 | if (nargs < 0) return build_string (""); | |
2959 | ||
2960 | args = (Lisp_Object *) alloca (nargs * sizeof (Lisp_Object)); | |
2961 | ||
88fe8140 EN |
2962 | GCPRO1 (separator); |
2963 | mapcar1 (leni, args, function, sequence); | |
7b863bd5 JB |
2964 | UNGCPRO; |
2965 | ||
2966 | for (i = leni - 1; i >= 0; i--) | |
2967 | args[i + i] = args[i]; | |
b4f334f7 | 2968 | |
7b863bd5 | 2969 | for (i = 1; i < nargs; i += 2) |
88fe8140 | 2970 | args[i] = separator; |
7b863bd5 JB |
2971 | |
2972 | return Fconcat (nargs, args); | |
2973 | } | |
2974 | ||
2975 | DEFUN ("mapcar", Fmapcar, Smapcar, 2, 2, 0, | |
e9d8ddc9 | 2976 | doc: /* Apply FUNCTION to each element of SEQUENCE, and make a list of the results. |
47cebab1 | 2977 | The result is a list just as long as SEQUENCE. |
e9d8ddc9 MB |
2978 | SEQUENCE may be a list, a vector, a bool-vector, or a string. */) |
2979 | (function, sequence) | |
88fe8140 | 2980 | Lisp_Object function, sequence; |
7b863bd5 JB |
2981 | { |
2982 | register Lisp_Object len; | |
2983 | register int leni; | |
2984 | register Lisp_Object *args; | |
2985 | ||
88fe8140 | 2986 | len = Flength (sequence); |
7b863bd5 JB |
2987 | leni = XFASTINT (len); |
2988 | args = (Lisp_Object *) alloca (leni * sizeof (Lisp_Object)); | |
2989 | ||
88fe8140 | 2990 | mapcar1 (leni, args, function, sequence); |
7b863bd5 JB |
2991 | |
2992 | return Flist (leni, args); | |
2993 | } | |
f5c75033 DL |
2994 | |
2995 | DEFUN ("mapc", Fmapc, Smapc, 2, 2, 0, | |
e9d8ddc9 | 2996 | doc: /* Apply FUNCTION to each element of SEQUENCE for side effects only. |
47cebab1 | 2997 | Unlike `mapcar', don't accumulate the results. Return SEQUENCE. |
e9d8ddc9 MB |
2998 | SEQUENCE may be a list, a vector, a bool-vector, or a string. */) |
2999 | (function, sequence) | |
f5c75033 DL |
3000 | Lisp_Object function, sequence; |
3001 | { | |
3002 | register int leni; | |
3003 | ||
3004 | leni = XFASTINT (Flength (sequence)); | |
3005 | mapcar1 (leni, 0, function, sequence); | |
3006 | ||
3007 | return sequence; | |
3008 | } | |
7b863bd5 JB |
3009 | \f |
3010 | /* Anything that calls this function must protect from GC! */ | |
3011 | ||
3012 | DEFUN ("y-or-n-p", Fy_or_n_p, Sy_or_n_p, 1, 1, 0, | |
e9d8ddc9 | 3013 | doc: /* Ask user a "y or n" question. Return t if answer is "y". |
47cebab1 GM |
3014 | Takes one argument, which is the string to display to ask the question. |
3015 | It should end in a space; `y-or-n-p' adds `(y or n) ' to it. | |
3016 | No confirmation of the answer is requested; a single character is enough. | |
3017 | Also accepts Space to mean yes, or Delete to mean no. \(Actually, it uses | |
3018 | the bindings in `query-replace-map'; see the documentation of that variable | |
3019 | for more information. In this case, the useful bindings are `act', `skip', | |
3020 | `recenter', and `quit'.\) | |
3021 | ||
3022 | Under a windowing system a dialog box will be used if `last-nonmenu-event' | |
e9d8ddc9 MB |
3023 | is nil and `use-dialog-box' is non-nil. */) |
3024 | (prompt) | |
7b863bd5 JB |
3025 | Lisp_Object prompt; |
3026 | { | |
2b8503ea | 3027 | register Lisp_Object obj, key, def, map; |
f5313ed9 | 3028 | register int answer; |
7b863bd5 JB |
3029 | Lisp_Object xprompt; |
3030 | Lisp_Object args[2]; | |
7b863bd5 | 3031 | struct gcpro gcpro1, gcpro2; |
aed13378 | 3032 | int count = SPECPDL_INDEX (); |
eb4ffa4e RS |
3033 | |
3034 | specbind (Qcursor_in_echo_area, Qt); | |
7b863bd5 | 3035 | |
f5313ed9 RS |
3036 | map = Fsymbol_value (intern ("query-replace-map")); |
3037 | ||
b7826503 | 3038 | CHECK_STRING (prompt); |
7b863bd5 JB |
3039 | xprompt = prompt; |
3040 | GCPRO2 (prompt, xprompt); | |
3041 | ||
eff95916 | 3042 | #ifdef HAVE_X_WINDOWS |
df6c90d8 GM |
3043 | if (display_hourglass_p) |
3044 | cancel_hourglass (); | |
eff95916 | 3045 | #endif |
59f953a2 | 3046 | |
7b863bd5 JB |
3047 | while (1) |
3048 | { | |
eb4ffa4e | 3049 | |
0ef68e8a | 3050 | #ifdef HAVE_MENUS |
588064ce | 3051 | if ((NILP (last_nonmenu_event) || CONSP (last_nonmenu_event)) |
bdd8d692 | 3052 | && use_dialog_box |
0ef68e8a | 3053 | && have_menus_p ()) |
1db4cfb2 RS |
3054 | { |
3055 | Lisp_Object pane, menu; | |
3007ebfb | 3056 | redisplay_preserve_echo_area (3); |
1db4cfb2 RS |
3057 | pane = Fcons (Fcons (build_string ("Yes"), Qt), |
3058 | Fcons (Fcons (build_string ("No"), Qnil), | |
3059 | Qnil)); | |
ec26e1b9 | 3060 | menu = Fcons (prompt, pane); |
d2f28f78 | 3061 | obj = Fx_popup_dialog (Qt, menu); |
1db4cfb2 RS |
3062 | answer = !NILP (obj); |
3063 | break; | |
3064 | } | |
0ef68e8a | 3065 | #endif /* HAVE_MENUS */ |
dfa89228 | 3066 | cursor_in_echo_area = 1; |
b312cc52 | 3067 | choose_minibuf_frame (); |
927be332 PJ |
3068 | |
3069 | { | |
3070 | Lisp_Object pargs[3]; | |
3071 | ||
bcb31b2a | 3072 | /* Colorize prompt according to `minibuffer-prompt' face. */ |
927be332 PJ |
3073 | pargs[0] = build_string ("%s(y or n) "); |
3074 | pargs[1] = intern ("face"); | |
3075 | pargs[2] = intern ("minibuffer-prompt"); | |
3076 | args[0] = Fpropertize (3, pargs); | |
3077 | args[1] = xprompt; | |
3078 | Fmessage (2, args); | |
3079 | } | |
7b863bd5 | 3080 | |
2d8e7e1f RS |
3081 | if (minibuffer_auto_raise) |
3082 | { | |
3083 | Lisp_Object mini_frame; | |
3084 | ||
3085 | mini_frame = WINDOW_FRAME (XWINDOW (minibuf_window)); | |
3086 | ||
3087 | Fraise_frame (mini_frame); | |
3088 | } | |
3089 | ||
7ba13c57 | 3090 | obj = read_filtered_event (1, 0, 0, 0); |
dfa89228 KH |
3091 | cursor_in_echo_area = 0; |
3092 | /* If we need to quit, quit with cursor_in_echo_area = 0. */ | |
3093 | QUIT; | |
a63f658b | 3094 | |
f5313ed9 | 3095 | key = Fmake_vector (make_number (1), obj); |
aad2a123 | 3096 | def = Flookup_key (map, key, Qt); |
7b863bd5 | 3097 | |
f5313ed9 RS |
3098 | if (EQ (def, intern ("skip"))) |
3099 | { | |
3100 | answer = 0; | |
3101 | break; | |
3102 | } | |
3103 | else if (EQ (def, intern ("act"))) | |
3104 | { | |
3105 | answer = 1; | |
3106 | break; | |
3107 | } | |
29944b73 RS |
3108 | else if (EQ (def, intern ("recenter"))) |
3109 | { | |
3110 | Frecenter (Qnil); | |
3111 | xprompt = prompt; | |
3112 | continue; | |
3113 | } | |
f5313ed9 | 3114 | else if (EQ (def, intern ("quit"))) |
7b863bd5 | 3115 | Vquit_flag = Qt; |
ec63af1b RS |
3116 | /* We want to exit this command for exit-prefix, |
3117 | and this is the only way to do it. */ | |
3118 | else if (EQ (def, intern ("exit-prefix"))) | |
3119 | Vquit_flag = Qt; | |
f5313ed9 | 3120 | |
7b863bd5 | 3121 | QUIT; |
20aa96aa JB |
3122 | |
3123 | /* If we don't clear this, then the next call to read_char will | |
3124 | return quit_char again, and we'll enter an infinite loop. */ | |
088880f1 | 3125 | Vquit_flag = Qnil; |
7b863bd5 JB |
3126 | |
3127 | Fding (Qnil); | |
3128 | Fdiscard_input (); | |
3129 | if (EQ (xprompt, prompt)) | |
3130 | { | |
3131 | args[0] = build_string ("Please answer y or n. "); | |
3132 | args[1] = prompt; | |
3133 | xprompt = Fconcat (2, args); | |
3134 | } | |
3135 | } | |
3136 | UNGCPRO; | |
6a8a9750 | 3137 | |
09c95874 RS |
3138 | if (! noninteractive) |
3139 | { | |
3140 | cursor_in_echo_area = -1; | |
ea35ce3d RS |
3141 | message_with_string (answer ? "%s(y or n) y" : "%s(y or n) n", |
3142 | xprompt, 0); | |
09c95874 | 3143 | } |
6a8a9750 | 3144 | |
eb4ffa4e | 3145 | unbind_to (count, Qnil); |
f5313ed9 | 3146 | return answer ? Qt : Qnil; |
7b863bd5 JB |
3147 | } |
3148 | \f | |
3149 | /* This is how C code calls `yes-or-no-p' and allows the user | |
3150 | to redefined it. | |
3151 | ||
3152 | Anything that calls this function must protect from GC! */ | |
3153 | ||
3154 | Lisp_Object | |
3155 | do_yes_or_no_p (prompt) | |
3156 | Lisp_Object prompt; | |
3157 | { | |
3158 | return call1 (intern ("yes-or-no-p"), prompt); | |
3159 | } | |
3160 | ||
3161 | /* Anything that calls this function must protect from GC! */ | |
3162 | ||
3163 | DEFUN ("yes-or-no-p", Fyes_or_no_p, Syes_or_no_p, 1, 1, 0, | |
e9d8ddc9 | 3164 | doc: /* Ask user a yes-or-no question. Return t if answer is yes. |
47cebab1 GM |
3165 | Takes one argument, which is the string to display to ask the question. |
3166 | It should end in a space; `yes-or-no-p' adds `(yes or no) ' to it. | |
3167 | The user must confirm the answer with RET, | |
3168 | and can edit it until it has been confirmed. | |
3169 | ||
3170 | Under a windowing system a dialog box will be used if `last-nonmenu-event' | |
e9d8ddc9 MB |
3171 | is nil, and `use-dialog-box' is non-nil. */) |
3172 | (prompt) | |
7b863bd5 JB |
3173 | Lisp_Object prompt; |
3174 | { | |
3175 | register Lisp_Object ans; | |
3176 | Lisp_Object args[2]; | |
3177 | struct gcpro gcpro1; | |
3178 | ||
b7826503 | 3179 | CHECK_STRING (prompt); |
7b863bd5 | 3180 | |
0ef68e8a | 3181 | #ifdef HAVE_MENUS |
b4f334f7 | 3182 | if ((NILP (last_nonmenu_event) || CONSP (last_nonmenu_event)) |
bdd8d692 | 3183 | && use_dialog_box |
0ef68e8a | 3184 | && have_menus_p ()) |
1db4cfb2 RS |
3185 | { |
3186 | Lisp_Object pane, menu, obj; | |
3007ebfb | 3187 | redisplay_preserve_echo_area (4); |
1db4cfb2 RS |
3188 | pane = Fcons (Fcons (build_string ("Yes"), Qt), |
3189 | Fcons (Fcons (build_string ("No"), Qnil), | |
3190 | Qnil)); | |
3191 | GCPRO1 (pane); | |
ec26e1b9 | 3192 | menu = Fcons (prompt, pane); |
b5ccb0a9 | 3193 | obj = Fx_popup_dialog (Qt, menu); |
1db4cfb2 RS |
3194 | UNGCPRO; |
3195 | return obj; | |
3196 | } | |
0ef68e8a | 3197 | #endif /* HAVE_MENUS */ |
1db4cfb2 | 3198 | |
7b863bd5 JB |
3199 | args[0] = prompt; |
3200 | args[1] = build_string ("(yes or no) "); | |
3201 | prompt = Fconcat (2, args); | |
3202 | ||
3203 | GCPRO1 (prompt); | |
1db4cfb2 | 3204 | |
7b863bd5 JB |
3205 | while (1) |
3206 | { | |
0ce830bc | 3207 | ans = Fdowncase (Fread_from_minibuffer (prompt, Qnil, Qnil, Qnil, |
b24014d4 KH |
3208 | Qyes_or_no_p_history, Qnil, |
3209 | Qnil)); | |
d5db4077 | 3210 | if (SCHARS (ans) == 3 && !strcmp (SDATA (ans), "yes")) |
7b863bd5 JB |
3211 | { |
3212 | UNGCPRO; | |
3213 | return Qt; | |
3214 | } | |
d5db4077 | 3215 | if (SCHARS (ans) == 2 && !strcmp (SDATA (ans), "no")) |
7b863bd5 JB |
3216 | { |
3217 | UNGCPRO; | |
3218 | return Qnil; | |
3219 | } | |
3220 | ||
3221 | Fding (Qnil); | |
3222 | Fdiscard_input (); | |
3223 | message ("Please answer yes or no."); | |
99dc4745 | 3224 | Fsleep_for (make_number (2), Qnil); |
7b863bd5 | 3225 | } |
7b863bd5 JB |
3226 | } |
3227 | \f | |
f4b50f66 | 3228 | DEFUN ("load-average", Fload_average, Sload_average, 0, 1, 0, |
e9d8ddc9 | 3229 | doc: /* Return list of 1 minute, 5 minute and 15 minute load averages. |
91f78c99 | 3230 | |
47cebab1 GM |
3231 | Each of the three load averages is multiplied by 100, then converted |
3232 | to integer. | |
3233 | ||
3234 | When USE-FLOATS is non-nil, floats will be used instead of integers. | |
3235 | These floats are not multiplied by 100. | |
3236 | ||
3237 | If the 5-minute or 15-minute load averages are not available, return a | |
30b1b0cf DL |
3238 | shortened list, containing only those averages which are available. |
3239 | ||
3240 | An error is thrown if the load average can't be obtained. In some | |
3241 | cases making it work would require Emacs being installed setuid or | |
3242 | setgid so that it can read kernel information, and that usually isn't | |
3243 | advisable. */) | |
e9d8ddc9 | 3244 | (use_floats) |
f4b50f66 | 3245 | Lisp_Object use_floats; |
7b863bd5 | 3246 | { |
daa37602 JB |
3247 | double load_ave[3]; |
3248 | int loads = getloadavg (load_ave, 3); | |
f4b50f66 | 3249 | Lisp_Object ret = Qnil; |
7b863bd5 | 3250 | |
daa37602 JB |
3251 | if (loads < 0) |
3252 | error ("load-average not implemented for this operating system"); | |
3253 | ||
f4b50f66 RS |
3254 | while (loads-- > 0) |
3255 | { | |
3256 | Lisp_Object load = (NILP (use_floats) ? | |
3257 | make_number ((int) (100.0 * load_ave[loads])) | |
3258 | : make_float (load_ave[loads])); | |
3259 | ret = Fcons (load, ret); | |
3260 | } | |
daa37602 JB |
3261 | |
3262 | return ret; | |
3263 | } | |
7b863bd5 | 3264 | \f |
b56ba8de SS |
3265 | Lisp_Object Vfeatures, Qsubfeatures; |
3266 | extern Lisp_Object Vafter_load_alist; | |
7b863bd5 | 3267 | |
65550192 | 3268 | DEFUN ("featurep", Ffeaturep, Sfeaturep, 1, 2, 0, |
e9d8ddc9 | 3269 | doc: /* Returns t if FEATURE is present in this Emacs. |
91f78c99 | 3270 | |
47cebab1 GM |
3271 | Use this to conditionalize execution of lisp code based on the |
3272 | presence or absence of emacs or environment extensions. | |
3273 | Use `provide' to declare that a feature is available. This function | |
3274 | looks at the value of the variable `features'. The optional argument | |
e9d8ddc9 MB |
3275 | SUBFEATURE can be used to check a specific subfeature of FEATURE. */) |
3276 | (feature, subfeature) | |
65550192 | 3277 | Lisp_Object feature, subfeature; |
7b863bd5 JB |
3278 | { |
3279 | register Lisp_Object tem; | |
b7826503 | 3280 | CHECK_SYMBOL (feature); |
7b863bd5 | 3281 | tem = Fmemq (feature, Vfeatures); |
65550192 | 3282 | if (!NILP (tem) && !NILP (subfeature)) |
37ebddef | 3283 | tem = Fmember (subfeature, Fget (feature, Qsubfeatures)); |
265a9e55 | 3284 | return (NILP (tem)) ? Qnil : Qt; |
7b863bd5 JB |
3285 | } |
3286 | ||
65550192 | 3287 | DEFUN ("provide", Fprovide, Sprovide, 1, 2, 0, |
e9d8ddc9 | 3288 | doc: /* Announce that FEATURE is a feature of the current Emacs. |
47cebab1 | 3289 | The optional argument SUBFEATURES should be a list of symbols listing |
e9d8ddc9 MB |
3290 | particular subfeatures supported in this version of FEATURE. */) |
3291 | (feature, subfeatures) | |
65550192 | 3292 | Lisp_Object feature, subfeatures; |
7b863bd5 JB |
3293 | { |
3294 | register Lisp_Object tem; | |
b7826503 | 3295 | CHECK_SYMBOL (feature); |
37ebddef | 3296 | CHECK_LIST (subfeatures); |
265a9e55 | 3297 | if (!NILP (Vautoload_queue)) |
7b863bd5 JB |
3298 | Vautoload_queue = Fcons (Fcons (Vfeatures, Qnil), Vautoload_queue); |
3299 | tem = Fmemq (feature, Vfeatures); | |
265a9e55 | 3300 | if (NILP (tem)) |
7b863bd5 | 3301 | Vfeatures = Fcons (feature, Vfeatures); |
65550192 SM |
3302 | if (!NILP (subfeatures)) |
3303 | Fput (feature, Qsubfeatures, subfeatures); | |
68732608 | 3304 | LOADHIST_ATTACH (Fcons (Qprovide, feature)); |
65550192 SM |
3305 | |
3306 | /* Run any load-hooks for this file. */ | |
3307 | tem = Fassq (feature, Vafter_load_alist); | |
cf42cb72 SM |
3308 | if (CONSP (tem)) |
3309 | Fprogn (XCDR (tem)); | |
65550192 | 3310 | |
7b863bd5 JB |
3311 | return feature; |
3312 | } | |
1f79789d RS |
3313 | \f |
3314 | /* `require' and its subroutines. */ | |
3315 | ||
3316 | /* List of features currently being require'd, innermost first. */ | |
3317 | ||
3318 | Lisp_Object require_nesting_list; | |
3319 | ||
b9d9a9b9 | 3320 | Lisp_Object |
1f79789d RS |
3321 | require_unwind (old_value) |
3322 | Lisp_Object old_value; | |
3323 | { | |
b9d9a9b9 | 3324 | return require_nesting_list = old_value; |
1f79789d | 3325 | } |
7b863bd5 | 3326 | |
53d5acf5 | 3327 | DEFUN ("require", Frequire, Srequire, 1, 3, 0, |
e9d8ddc9 | 3328 | doc: /* If feature FEATURE is not loaded, load it from FILENAME. |
47cebab1 GM |
3329 | If FEATURE is not a member of the list `features', then the feature |
3330 | is not loaded; so load the file FILENAME. | |
3331 | If FILENAME is omitted, the printname of FEATURE is used as the file name, | |
3332 | and `load' will try to load this name appended with the suffix `.elc', | |
3333 | `.el' or the unmodified name, in that order. | |
3334 | If the optional third argument NOERROR is non-nil, | |
3335 | then return nil if the file is not found instead of signaling an error. | |
3336 | Normally the return value is FEATURE. | |
e9d8ddc9 MB |
3337 | The normal messages at start and end of loading FILENAME are suppressed. */) |
3338 | (feature, filename, noerror) | |
81a81c0f | 3339 | Lisp_Object feature, filename, noerror; |
7b863bd5 JB |
3340 | { |
3341 | register Lisp_Object tem; | |
1f79789d RS |
3342 | struct gcpro gcpro1, gcpro2; |
3343 | ||
b7826503 | 3344 | CHECK_SYMBOL (feature); |
1f79789d | 3345 | |
7b863bd5 | 3346 | tem = Fmemq (feature, Vfeatures); |
91f78c99 | 3347 | |
265a9e55 | 3348 | if (NILP (tem)) |
7b863bd5 | 3349 | { |
aed13378 | 3350 | int count = SPECPDL_INDEX (); |
1f79789d | 3351 | int nesting = 0; |
bcb31b2a | 3352 | |
c02138c6 DL |
3353 | LOADHIST_ATTACH (Fcons (Qrequire, feature)); |
3354 | ||
aea6173f RS |
3355 | /* This is to make sure that loadup.el gives a clear picture |
3356 | of what files are preloaded and when. */ | |
bcb31b2a RS |
3357 | if (! NILP (Vpurify_flag)) |
3358 | error ("(require %s) while preparing to dump", | |
d5db4077 | 3359 | SDATA (SYMBOL_NAME (feature))); |
91f78c99 | 3360 | |
1f79789d RS |
3361 | /* A certain amount of recursive `require' is legitimate, |
3362 | but if we require the same feature recursively 3 times, | |
3363 | signal an error. */ | |
3364 | tem = require_nesting_list; | |
3365 | while (! NILP (tem)) | |
3366 | { | |
3367 | if (! NILP (Fequal (feature, XCAR (tem)))) | |
3368 | nesting++; | |
3369 | tem = XCDR (tem); | |
3370 | } | |
f707342d | 3371 | if (nesting > 3) |
1f79789d | 3372 | error ("Recursive `require' for feature `%s'", |
d5db4077 | 3373 | SDATA (SYMBOL_NAME (feature))); |
1f79789d RS |
3374 | |
3375 | /* Update the list for any nested `require's that occur. */ | |
3376 | record_unwind_protect (require_unwind, require_nesting_list); | |
3377 | require_nesting_list = Fcons (feature, require_nesting_list); | |
7b863bd5 JB |
3378 | |
3379 | /* Value saved here is to be restored into Vautoload_queue */ | |
3380 | record_unwind_protect (un_autoload, Vautoload_queue); | |
3381 | Vautoload_queue = Qt; | |
3382 | ||
1f79789d RS |
3383 | /* Load the file. */ |
3384 | GCPRO2 (feature, filename); | |
81a81c0f GM |
3385 | tem = Fload (NILP (filename) ? Fsymbol_name (feature) : filename, |
3386 | noerror, Qt, Qnil, (NILP (filename) ? Qt : Qnil)); | |
1f79789d RS |
3387 | UNGCPRO; |
3388 | ||
53d5acf5 RS |
3389 | /* If load failed entirely, return nil. */ |
3390 | if (NILP (tem)) | |
41857307 | 3391 | return unbind_to (count, Qnil); |
7b863bd5 JB |
3392 | |
3393 | tem = Fmemq (feature, Vfeatures); | |
265a9e55 | 3394 | if (NILP (tem)) |
1f79789d | 3395 | error ("Required feature `%s' was not provided", |
d5db4077 | 3396 | SDATA (SYMBOL_NAME (feature))); |
7b863bd5 JB |
3397 | |
3398 | /* Once loading finishes, don't undo it. */ | |
3399 | Vautoload_queue = Qt; | |
3400 | feature = unbind_to (count, feature); | |
3401 | } | |
1f79789d | 3402 | |
7b863bd5 JB |
3403 | return feature; |
3404 | } | |
3405 | \f | |
b4f334f7 KH |
3406 | /* Primitives for work of the "widget" library. |
3407 | In an ideal world, this section would not have been necessary. | |
3408 | However, lisp function calls being as slow as they are, it turns | |
3409 | out that some functions in the widget library (wid-edit.el) are the | |
3410 | bottleneck of Widget operation. Here is their translation to C, | |
3411 | for the sole reason of efficiency. */ | |
3412 | ||
a5254817 | 3413 | DEFUN ("plist-member", Fplist_member, Splist_member, 2, 2, 0, |
e9d8ddc9 | 3414 | doc: /* Return non-nil if PLIST has the property PROP. |
47cebab1 GM |
3415 | PLIST is a property list, which is a list of the form |
3416 | \(PROP1 VALUE1 PROP2 VALUE2 ...\). PROP is a symbol. | |
3417 | Unlike `plist-get', this allows you to distinguish between a missing | |
3418 | property and a property with the value nil. | |
e9d8ddc9 MB |
3419 | The value is actually the tail of PLIST whose car is PROP. */) |
3420 | (plist, prop) | |
b4f334f7 KH |
3421 | Lisp_Object plist, prop; |
3422 | { | |
3423 | while (CONSP (plist) && !EQ (XCAR (plist), prop)) | |
3424 | { | |
3425 | QUIT; | |
3426 | plist = XCDR (plist); | |
3427 | plist = CDR (plist); | |
3428 | } | |
3429 | return plist; | |
3430 | } | |
3431 | ||
3432 | DEFUN ("widget-put", Fwidget_put, Swidget_put, 3, 3, 0, | |
e9d8ddc9 MB |
3433 | doc: /* In WIDGET, set PROPERTY to VALUE. |
3434 | The value can later be retrieved with `widget-get'. */) | |
3435 | (widget, property, value) | |
b4f334f7 KH |
3436 | Lisp_Object widget, property, value; |
3437 | { | |
b7826503 | 3438 | CHECK_CONS (widget); |
f3fbd155 | 3439 | XSETCDR (widget, Fplist_put (XCDR (widget), property, value)); |
f7993597 | 3440 | return value; |
b4f334f7 KH |
3441 | } |
3442 | ||
3443 | DEFUN ("widget-get", Fwidget_get, Swidget_get, 2, 2, 0, | |
e9d8ddc9 | 3444 | doc: /* In WIDGET, get the value of PROPERTY. |
47cebab1 | 3445 | The value could either be specified when the widget was created, or |
e9d8ddc9 MB |
3446 | later with `widget-put'. */) |
3447 | (widget, property) | |
b4f334f7 KH |
3448 | Lisp_Object widget, property; |
3449 | { | |
3450 | Lisp_Object tmp; | |
3451 | ||
3452 | while (1) | |
3453 | { | |
3454 | if (NILP (widget)) | |
3455 | return Qnil; | |
b7826503 | 3456 | CHECK_CONS (widget); |
a5254817 | 3457 | tmp = Fplist_member (XCDR (widget), property); |
b4f334f7 KH |
3458 | if (CONSP (tmp)) |
3459 | { | |
3460 | tmp = XCDR (tmp); | |
3461 | return CAR (tmp); | |
3462 | } | |
3463 | tmp = XCAR (widget); | |
3464 | if (NILP (tmp)) | |
3465 | return Qnil; | |
3466 | widget = Fget (tmp, Qwidget_type); | |
3467 | } | |
3468 | } | |
3469 | ||
3470 | DEFUN ("widget-apply", Fwidget_apply, Swidget_apply, 2, MANY, 0, | |
e9d8ddc9 | 3471 | doc: /* Apply the value of WIDGET's PROPERTY to the widget itself. |
4bf8e2a3 MB |
3472 | ARGS are passed as extra arguments to the function. |
3473 | usage: (widget-apply WIDGET PROPERTY &rest ARGS) */) | |
e9d8ddc9 | 3474 | (nargs, args) |
b4f334f7 KH |
3475 | int nargs; |
3476 | Lisp_Object *args; | |
3477 | { | |
3478 | /* This function can GC. */ | |
3479 | Lisp_Object newargs[3]; | |
3480 | struct gcpro gcpro1, gcpro2; | |
3481 | Lisp_Object result; | |
3482 | ||
3483 | newargs[0] = Fwidget_get (args[0], args[1]); | |
3484 | newargs[1] = args[0]; | |
3485 | newargs[2] = Flist (nargs - 2, args + 2); | |
3486 | GCPRO2 (newargs[0], newargs[2]); | |
3487 | result = Fapply (3, newargs); | |
3488 | UNGCPRO; | |
3489 | return result; | |
3490 | } | |
dec002ca DL |
3491 | |
3492 | #ifdef HAVE_LANGINFO_CODESET | |
3493 | #include <langinfo.h> | |
3494 | #endif | |
3495 | ||
d68beb2f RS |
3496 | DEFUN ("locale-info", Flocale_info, Slocale_info, 1, 1, 0, |
3497 | doc: /* Access locale data ITEM for the current C locale, if available. | |
3498 | ITEM should be one of the following: | |
30b1b0cf | 3499 | |
98aeeaa1 | 3500 | `codeset', returning the character set as a string (locale item CODESET); |
30b1b0cf | 3501 | |
98aeeaa1 | 3502 | `days', returning a 7-element vector of day names (locale items DAY_n); |
30b1b0cf | 3503 | |
98aeeaa1 | 3504 | `months', returning a 12-element vector of month names (locale items MON_n); |
30b1b0cf | 3505 | |
d68beb2f RS |
3506 | `paper', returning a list (WIDTH HEIGHT) for the default paper size, |
3507 | both measured in milimeters (locale items PAPER_WIDTH, PAPER_HEIGHT). | |
dec002ca DL |
3508 | |
3509 | If the system can't provide such information through a call to | |
d68beb2f | 3510 | `nl_langinfo', or if ITEM isn't from the list above, return nil. |
dec002ca | 3511 | |
98aeeaa1 DL |
3512 | See also Info node `(libc)Locales'. |
3513 | ||
dec002ca DL |
3514 | The data read from the system are decoded using `locale-coding-system'. */) |
3515 | (item) | |
3516 | Lisp_Object item; | |
3517 | { | |
3518 | char *str = NULL; | |
3519 | #ifdef HAVE_LANGINFO_CODESET | |
3520 | Lisp_Object val; | |
3521 | if (EQ (item, Qcodeset)) | |
3522 | { | |
3523 | str = nl_langinfo (CODESET); | |
3524 | return build_string (str); | |
3525 | } | |
3526 | #ifdef DAY_1 | |
3527 | else if (EQ (item, Qdays)) /* e.g. for calendar-day-name-array */ | |
3528 | { | |
3529 | Lisp_Object v = Fmake_vector (make_number (7), Qnil); | |
3530 | int days[7] = {DAY_1, DAY_2, DAY_3, DAY_4, DAY_5, DAY_6, DAY_7}; | |
3531 | int i; | |
3532 | synchronize_system_time_locale (); | |
3533 | for (i = 0; i < 7; i++) | |
3534 | { | |
3535 | str = nl_langinfo (days[i]); | |
3536 | val = make_unibyte_string (str, strlen (str)); | |
3537 | /* Fixme: Is this coding system necessarily right, even if | |
3538 | it is consistent with CODESET? If not, what to do? */ | |
3539 | Faset (v, make_number (i), | |
3540 | code_convert_string_norecord (val, Vlocale_coding_system, | |
e52bd6b7 | 3541 | 0)); |
dec002ca DL |
3542 | } |
3543 | return v; | |
3544 | } | |
3545 | #endif /* DAY_1 */ | |
3546 | #ifdef MON_1 | |
3547 | else if (EQ (item, Qmonths)) /* e.g. for calendar-month-name-array */ | |
3548 | { | |
3549 | struct Lisp_Vector *p = allocate_vector (12); | |
3550 | int months[12] = {MON_1, MON_2, MON_3, MON_4, MON_5, MON_6, MON_7, | |
3551 | MON_8, MON_9, MON_10, MON_11, MON_12}; | |
3552 | int i; | |
3553 | synchronize_system_time_locale (); | |
3554 | for (i = 0; i < 12; i++) | |
3555 | { | |
3556 | str = nl_langinfo (months[i]); | |
3557 | val = make_unibyte_string (str, strlen (str)); | |
3558 | p->contents[i] = | |
e52bd6b7 | 3559 | code_convert_string_norecord (val, Vlocale_coding_system, 0); |
dec002ca DL |
3560 | } |
3561 | XSETVECTOR (val, p); | |
3562 | return val; | |
3563 | } | |
3564 | #endif /* MON_1 */ | |
3565 | /* LC_PAPER stuff isn't defined as accessible in glibc as of 2.3.1, | |
3566 | but is in the locale files. This could be used by ps-print. */ | |
3567 | #ifdef PAPER_WIDTH | |
3568 | else if (EQ (item, Qpaper)) | |
3569 | { | |
3570 | return list2 (make_number (nl_langinfo (PAPER_WIDTH)), | |
3571 | make_number (nl_langinfo (PAPER_HEIGHT))); | |
3572 | } | |
3573 | #endif /* PAPER_WIDTH */ | |
3574 | #endif /* HAVE_LANGINFO_CODESET*/ | |
30b1b0cf | 3575 | return Qnil; |
dec002ca | 3576 | } |
b4f334f7 | 3577 | \f |
a90e80bf | 3578 | /* base64 encode/decode functions (RFC 2045). |
24c129e4 KH |
3579 | Based on code from GNU recode. */ |
3580 | ||
3581 | #define MIME_LINE_LENGTH 76 | |
3582 | ||
3583 | #define IS_ASCII(Character) \ | |
3584 | ((Character) < 128) | |
3585 | #define IS_BASE64(Character) \ | |
3586 | (IS_ASCII (Character) && base64_char_to_value[Character] >= 0) | |
9a092df0 PF |
3587 | #define IS_BASE64_IGNORABLE(Character) \ |
3588 | ((Character) == ' ' || (Character) == '\t' || (Character) == '\n' \ | |
3589 | || (Character) == '\f' || (Character) == '\r') | |
3590 | ||
3591 | /* Used by base64_decode_1 to retrieve a non-base64-ignorable | |
3592 | character or return retval if there are no characters left to | |
3593 | process. */ | |
caff31d4 KH |
3594 | #define READ_QUADRUPLET_BYTE(retval) \ |
3595 | do \ | |
3596 | { \ | |
3597 | if (i == length) \ | |
3598 | { \ | |
3599 | if (nchars_return) \ | |
3600 | *nchars_return = nchars; \ | |
3601 | return (retval); \ | |
3602 | } \ | |
3603 | c = from[i++]; \ | |
3604 | } \ | |
9a092df0 | 3605 | while (IS_BASE64_IGNORABLE (c)) |
24c129e4 | 3606 | |
4b2e75e6 EZ |
3607 | /* Don't use alloca for regions larger than this, lest we overflow |
3608 | their stack. */ | |
3609 | #define MAX_ALLOCA 16*1024 | |
3610 | ||
24c129e4 KH |
3611 | /* Table of characters coding the 64 values. */ |
3612 | static char base64_value_to_char[64] = | |
3613 | { | |
3614 | 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', /* 0- 9 */ | |
3615 | 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', /* 10-19 */ | |
3616 | 'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', /* 20-29 */ | |
3617 | 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', /* 30-39 */ | |
3618 | 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', /* 40-49 */ | |
3619 | 'y', 'z', '0', '1', '2', '3', '4', '5', '6', '7', /* 50-59 */ | |
3620 | '8', '9', '+', '/' /* 60-63 */ | |
3621 | }; | |
3622 | ||
3623 | /* Table of base64 values for first 128 characters. */ | |
3624 | static short base64_char_to_value[128] = | |
3625 | { | |
3626 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0- 9 */ | |
3627 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 10- 19 */ | |
3628 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 20- 29 */ | |
3629 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 30- 39 */ | |
3630 | -1, -1, -1, 62, -1, -1, -1, 63, 52, 53, /* 40- 49 */ | |
3631 | 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, /* 50- 59 */ | |
3632 | -1, -1, -1, -1, -1, 0, 1, 2, 3, 4, /* 60- 69 */ | |
3633 | 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, /* 70- 79 */ | |
3634 | 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, /* 80- 89 */ | |
3635 | 25, -1, -1, -1, -1, -1, -1, 26, 27, 28, /* 90- 99 */ | |
3636 | 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, /* 100-109 */ | |
3637 | 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, /* 110-119 */ | |
3638 | 49, 50, 51, -1, -1, -1, -1, -1 /* 120-127 */ | |
3639 | }; | |
3640 | ||
3641 | /* The following diagram shows the logical steps by which three octets | |
3642 | get transformed into four base64 characters. | |
3643 | ||
3644 | .--------. .--------. .--------. | |
3645 | |aaaaaabb| |bbbbcccc| |ccdddddd| | |
3646 | `--------' `--------' `--------' | |
3647 | 6 2 4 4 2 6 | |
3648 | .--------+--------+--------+--------. | |
3649 | |00aaaaaa|00bbbbbb|00cccccc|00dddddd| | |
3650 | `--------+--------+--------+--------' | |
3651 | ||
3652 | .--------+--------+--------+--------. | |
3653 | |AAAAAAAA|BBBBBBBB|CCCCCCCC|DDDDDDDD| | |
3654 | `--------+--------+--------+--------' | |
3655 | ||
3656 | The octets are divided into 6 bit chunks, which are then encoded into | |
3657 | base64 characters. */ | |
3658 | ||
3659 | ||
2efdd1b9 | 3660 | static int base64_encode_1 P_ ((const char *, char *, int, int, int)); |
caff31d4 | 3661 | static int base64_decode_1 P_ ((const char *, char *, int, int, int *)); |
24c129e4 KH |
3662 | |
3663 | DEFUN ("base64-encode-region", Fbase64_encode_region, Sbase64_encode_region, | |
3664 | 2, 3, "r", | |
e9d8ddc9 | 3665 | doc: /* Base64-encode the region between BEG and END. |
47cebab1 GM |
3666 | Return the length of the encoded text. |
3667 | Optional third argument NO-LINE-BREAK means do not break long lines | |
e9d8ddc9 MB |
3668 | into shorter lines. */) |
3669 | (beg, end, no_line_break) | |
24c129e4 KH |
3670 | Lisp_Object beg, end, no_line_break; |
3671 | { | |
3672 | char *encoded; | |
3673 | int allength, length; | |
3674 | int ibeg, iend, encoded_length; | |
3675 | int old_pos = PT; | |
3676 | ||
3677 | validate_region (&beg, &end); | |
3678 | ||
3679 | ibeg = CHAR_TO_BYTE (XFASTINT (beg)); | |
3680 | iend = CHAR_TO_BYTE (XFASTINT (end)); | |
3681 | move_gap_both (XFASTINT (beg), ibeg); | |
3682 | ||
3683 | /* We need to allocate enough room for encoding the text. | |
3684 | We need 33 1/3% more space, plus a newline every 76 | |
3685 | characters, and then we round up. */ | |
3686 | length = iend - ibeg; | |
3687 | allength = length + length/3 + 1; | |
3688 | allength += allength / MIME_LINE_LENGTH + 1 + 6; | |
3689 | ||
4b2e75e6 EZ |
3690 | if (allength <= MAX_ALLOCA) |
3691 | encoded = (char *) alloca (allength); | |
3692 | else | |
3693 | encoded = (char *) xmalloc (allength); | |
24c129e4 | 3694 | encoded_length = base64_encode_1 (BYTE_POS_ADDR (ibeg), encoded, length, |
2efdd1b9 KH |
3695 | NILP (no_line_break), |
3696 | !NILP (current_buffer->enable_multibyte_characters)); | |
24c129e4 KH |
3697 | if (encoded_length > allength) |
3698 | abort (); | |
3699 | ||
2efdd1b9 KH |
3700 | if (encoded_length < 0) |
3701 | { | |
3702 | /* The encoding wasn't possible. */ | |
3703 | if (length > MAX_ALLOCA) | |
3704 | xfree (encoded); | |
a90e80bf | 3705 | error ("Multibyte character in data for base64 encoding"); |
2efdd1b9 KH |
3706 | } |
3707 | ||
24c129e4 KH |
3708 | /* Now we have encoded the region, so we insert the new contents |
3709 | and delete the old. (Insert first in order to preserve markers.) */ | |
8b835738 | 3710 | SET_PT_BOTH (XFASTINT (beg), ibeg); |
24c129e4 | 3711 | insert (encoded, encoded_length); |
4b2e75e6 | 3712 | if (allength > MAX_ALLOCA) |
8c217645 | 3713 | xfree (encoded); |
24c129e4 KH |
3714 | del_range_byte (ibeg + encoded_length, iend + encoded_length, 1); |
3715 | ||
3716 | /* If point was outside of the region, restore it exactly; else just | |
3717 | move to the beginning of the region. */ | |
3718 | if (old_pos >= XFASTINT (end)) | |
3719 | old_pos += encoded_length - (XFASTINT (end) - XFASTINT (beg)); | |
8b835738 AS |
3720 | else if (old_pos > XFASTINT (beg)) |
3721 | old_pos = XFASTINT (beg); | |
24c129e4 KH |
3722 | SET_PT (old_pos); |
3723 | ||
3724 | /* We return the length of the encoded text. */ | |
3725 | return make_number (encoded_length); | |
3726 | } | |
3727 | ||
3728 | DEFUN ("base64-encode-string", Fbase64_encode_string, Sbase64_encode_string, | |
c22554ac | 3729 | 1, 2, 0, |
e9d8ddc9 | 3730 | doc: /* Base64-encode STRING and return the result. |
47cebab1 | 3731 | Optional second argument NO-LINE-BREAK means do not break long lines |
e9d8ddc9 MB |
3732 | into shorter lines. */) |
3733 | (string, no_line_break) | |
915b8312 | 3734 | Lisp_Object string, no_line_break; |
24c129e4 KH |
3735 | { |
3736 | int allength, length, encoded_length; | |
3737 | char *encoded; | |
4b2e75e6 | 3738 | Lisp_Object encoded_string; |
24c129e4 | 3739 | |
b7826503 | 3740 | CHECK_STRING (string); |
24c129e4 | 3741 | |
7f8a0840 KH |
3742 | /* We need to allocate enough room for encoding the text. |
3743 | We need 33 1/3% more space, plus a newline every 76 | |
3744 | characters, and then we round up. */ | |
d5db4077 | 3745 | length = SBYTES (string); |
7f8a0840 KH |
3746 | allength = length + length/3 + 1; |
3747 | allength += allength / MIME_LINE_LENGTH + 1 + 6; | |
24c129e4 KH |
3748 | |
3749 | /* We need to allocate enough room for decoding the text. */ | |
4b2e75e6 EZ |
3750 | if (allength <= MAX_ALLOCA) |
3751 | encoded = (char *) alloca (allength); | |
3752 | else | |
3753 | encoded = (char *) xmalloc (allength); | |
24c129e4 | 3754 | |
d5db4077 | 3755 | encoded_length = base64_encode_1 (SDATA (string), |
2efdd1b9 KH |
3756 | encoded, length, NILP (no_line_break), |
3757 | STRING_MULTIBYTE (string)); | |
24c129e4 KH |
3758 | if (encoded_length > allength) |
3759 | abort (); | |
3760 | ||
2efdd1b9 KH |
3761 | if (encoded_length < 0) |
3762 | { | |
3763 | /* The encoding wasn't possible. */ | |
3764 | if (length > MAX_ALLOCA) | |
3765 | xfree (encoded); | |
a90e80bf | 3766 | error ("Multibyte character in data for base64 encoding"); |
2efdd1b9 KH |
3767 | } |
3768 | ||
4b2e75e6 EZ |
3769 | encoded_string = make_unibyte_string (encoded, encoded_length); |
3770 | if (allength > MAX_ALLOCA) | |
8c217645 | 3771 | xfree (encoded); |
4b2e75e6 EZ |
3772 | |
3773 | return encoded_string; | |
24c129e4 KH |
3774 | } |
3775 | ||
3776 | static int | |
2efdd1b9 | 3777 | base64_encode_1 (from, to, length, line_break, multibyte) |
24c129e4 KH |
3778 | const char *from; |
3779 | char *to; | |
3780 | int length; | |
3781 | int line_break; | |
2efdd1b9 | 3782 | int multibyte; |
24c129e4 KH |
3783 | { |
3784 | int counter = 0, i = 0; | |
3785 | char *e = to; | |
844eb643 | 3786 | int c; |
24c129e4 | 3787 | unsigned int value; |
2efdd1b9 | 3788 | int bytes; |
24c129e4 KH |
3789 | |
3790 | while (i < length) | |
3791 | { | |
2efdd1b9 KH |
3792 | if (multibyte) |
3793 | { | |
3794 | c = STRING_CHAR_AND_LENGTH (from + i, length - i, bytes); | |
caff31d4 | 3795 | if (c >= 256) |
2efdd1b9 | 3796 | return -1; |
caff31d4 | 3797 | i += bytes; |
2efdd1b9 KH |
3798 | } |
3799 | else | |
3800 | c = from[i++]; | |
24c129e4 KH |
3801 | |
3802 | /* Wrap line every 76 characters. */ | |
3803 | ||
3804 | if (line_break) | |
3805 | { | |
3806 | if (counter < MIME_LINE_LENGTH / 4) | |
3807 | counter++; | |
3808 | else | |
3809 | { | |
3810 | *e++ = '\n'; | |
3811 | counter = 1; | |
3812 | } | |
3813 | } | |
3814 | ||
3815 | /* Process first byte of a triplet. */ | |
3816 | ||
3817 | *e++ = base64_value_to_char[0x3f & c >> 2]; | |
3818 | value = (0x03 & c) << 4; | |
3819 | ||
3820 | /* Process second byte of a triplet. */ | |
3821 | ||
3822 | if (i == length) | |
3823 | { | |
3824 | *e++ = base64_value_to_char[value]; | |
3825 | *e++ = '='; | |
3826 | *e++ = '='; | |
3827 | break; | |
3828 | } | |
3829 | ||
2efdd1b9 KH |
3830 | if (multibyte) |
3831 | { | |
3832 | c = STRING_CHAR_AND_LENGTH (from + i, length - i, bytes); | |
caff31d4 | 3833 | if (c >= 256) |
844eb643 | 3834 | return -1; |
caff31d4 | 3835 | i += bytes; |
2efdd1b9 KH |
3836 | } |
3837 | else | |
3838 | c = from[i++]; | |
24c129e4 KH |
3839 | |
3840 | *e++ = base64_value_to_char[value | (0x0f & c >> 4)]; | |
3841 | value = (0x0f & c) << 2; | |
3842 | ||
3843 | /* Process third byte of a triplet. */ | |
3844 | ||
3845 | if (i == length) | |
3846 | { | |
3847 | *e++ = base64_value_to_char[value]; | |
3848 | *e++ = '='; | |
3849 | break; | |
3850 | } | |
3851 | ||
2efdd1b9 KH |
3852 | if (multibyte) |
3853 | { | |
3854 | c = STRING_CHAR_AND_LENGTH (from + i, length - i, bytes); | |
caff31d4 | 3855 | if (c >= 256) |
844eb643 | 3856 | return -1; |
caff31d4 | 3857 | i += bytes; |
2efdd1b9 KH |
3858 | } |
3859 | else | |
3860 | c = from[i++]; | |
24c129e4 KH |
3861 | |
3862 | *e++ = base64_value_to_char[value | (0x03 & c >> 6)]; | |
3863 | *e++ = base64_value_to_char[0x3f & c]; | |
3864 | } | |
3865 | ||
24c129e4 KH |
3866 | return e - to; |
3867 | } | |
3868 | ||
3869 | ||
3870 | DEFUN ("base64-decode-region", Fbase64_decode_region, Sbase64_decode_region, | |
47cebab1 | 3871 | 2, 2, "r", |
e9d8ddc9 | 3872 | doc: /* Base64-decode the region between BEG and END. |
47cebab1 | 3873 | Return the length of the decoded text. |
e9d8ddc9 MB |
3874 | If the region can't be decoded, signal an error and don't modify the buffer. */) |
3875 | (beg, end) | |
24c129e4 KH |
3876 | Lisp_Object beg, end; |
3877 | { | |
caff31d4 | 3878 | int ibeg, iend, length, allength; |
24c129e4 KH |
3879 | char *decoded; |
3880 | int old_pos = PT; | |
3881 | int decoded_length; | |
9b703a38 | 3882 | int inserted_chars; |
caff31d4 | 3883 | int multibyte = !NILP (current_buffer->enable_multibyte_characters); |
24c129e4 KH |
3884 | |
3885 | validate_region (&beg, &end); | |
3886 | ||
3887 | ibeg = CHAR_TO_BYTE (XFASTINT (beg)); | |
3888 | iend = CHAR_TO_BYTE (XFASTINT (end)); | |
3889 | ||
3890 | length = iend - ibeg; | |
caff31d4 KH |
3891 | |
3892 | /* We need to allocate enough room for decoding the text. If we are | |
3893 | working on a multibyte buffer, each decoded code may occupy at | |
3894 | most two bytes. */ | |
3895 | allength = multibyte ? length * 2 : length; | |
3896 | if (allength <= MAX_ALLOCA) | |
3897 | decoded = (char *) alloca (allength); | |
4b2e75e6 | 3898 | else |
caff31d4 | 3899 | decoded = (char *) xmalloc (allength); |
24c129e4 KH |
3900 | |
3901 | move_gap_both (XFASTINT (beg), ibeg); | |
caff31d4 KH |
3902 | decoded_length = base64_decode_1 (BYTE_POS_ADDR (ibeg), decoded, length, |
3903 | multibyte, &inserted_chars); | |
3904 | if (decoded_length > allength) | |
24c129e4 KH |
3905 | abort (); |
3906 | ||
3907 | if (decoded_length < 0) | |
8c217645 KH |
3908 | { |
3909 | /* The decoding wasn't possible. */ | |
caff31d4 | 3910 | if (allength > MAX_ALLOCA) |
8c217645 | 3911 | xfree (decoded); |
a90e80bf | 3912 | error ("Invalid base64 data"); |
8c217645 | 3913 | } |
24c129e4 KH |
3914 | |
3915 | /* Now we have decoded the region, so we insert the new contents | |
3916 | and delete the old. (Insert first in order to preserve markers.) */ | |
59f953a2 | 3917 | TEMP_SET_PT_BOTH (XFASTINT (beg), ibeg); |
2efdd1b9 | 3918 | insert_1_both (decoded, inserted_chars, decoded_length, 0, 1, 0); |
caff31d4 | 3919 | if (allength > MAX_ALLOCA) |
8c217645 | 3920 | xfree (decoded); |
2efdd1b9 KH |
3921 | /* Delete the original text. */ |
3922 | del_range_both (PT, PT_BYTE, XFASTINT (end) + inserted_chars, | |
3923 | iend + decoded_length, 1); | |
24c129e4 KH |
3924 | |
3925 | /* If point was outside of the region, restore it exactly; else just | |
3926 | move to the beginning of the region. */ | |
3927 | if (old_pos >= XFASTINT (end)) | |
9b703a38 KH |
3928 | old_pos += inserted_chars - (XFASTINT (end) - XFASTINT (beg)); |
3929 | else if (old_pos > XFASTINT (beg)) | |
3930 | old_pos = XFASTINT (beg); | |
e52ad9c9 | 3931 | SET_PT (old_pos > ZV ? ZV : old_pos); |
24c129e4 | 3932 | |
9b703a38 | 3933 | return make_number (inserted_chars); |
24c129e4 KH |
3934 | } |
3935 | ||
3936 | DEFUN ("base64-decode-string", Fbase64_decode_string, Sbase64_decode_string, | |
3937 | 1, 1, 0, | |
e9d8ddc9 MB |
3938 | doc: /* Base64-decode STRING and return the result. */) |
3939 | (string) | |
24c129e4 KH |
3940 | Lisp_Object string; |
3941 | { | |
3942 | char *decoded; | |
3943 | int length, decoded_length; | |
4b2e75e6 | 3944 | Lisp_Object decoded_string; |
24c129e4 | 3945 | |
b7826503 | 3946 | CHECK_STRING (string); |
24c129e4 | 3947 | |
d5db4077 | 3948 | length = SBYTES (string); |
24c129e4 | 3949 | /* We need to allocate enough room for decoding the text. */ |
4b2e75e6 EZ |
3950 | if (length <= MAX_ALLOCA) |
3951 | decoded = (char *) alloca (length); | |
3952 | else | |
3953 | decoded = (char *) xmalloc (length); | |
24c129e4 | 3954 | |
8ec118cd | 3955 | /* The decoded result should be unibyte. */ |
d5db4077 | 3956 | decoded_length = base64_decode_1 (SDATA (string), decoded, length, |
8ec118cd | 3957 | 0, NULL); |
24c129e4 KH |
3958 | if (decoded_length > length) |
3959 | abort (); | |
3d6c79c5 | 3960 | else if (decoded_length >= 0) |
2efdd1b9 | 3961 | decoded_string = make_unibyte_string (decoded, decoded_length); |
3d6c79c5 GM |
3962 | else |
3963 | decoded_string = Qnil; | |
24c129e4 | 3964 | |
4b2e75e6 | 3965 | if (length > MAX_ALLOCA) |
8c217645 | 3966 | xfree (decoded); |
3d6c79c5 | 3967 | if (!STRINGP (decoded_string)) |
a90e80bf | 3968 | error ("Invalid base64 data"); |
4b2e75e6 EZ |
3969 | |
3970 | return decoded_string; | |
24c129e4 KH |
3971 | } |
3972 | ||
caff31d4 KH |
3973 | /* Base64-decode the data at FROM of LENGHT bytes into TO. If |
3974 | MULTIBYTE is nonzero, the decoded result should be in multibyte | |
3975 | form. If NCHARS_RETRUN is not NULL, store the number of produced | |
3976 | characters in *NCHARS_RETURN. */ | |
3977 | ||
24c129e4 | 3978 | static int |
caff31d4 | 3979 | base64_decode_1 (from, to, length, multibyte, nchars_return) |
24c129e4 KH |
3980 | const char *from; |
3981 | char *to; | |
3982 | int length; | |
caff31d4 KH |
3983 | int multibyte; |
3984 | int *nchars_return; | |
24c129e4 | 3985 | { |
9a092df0 | 3986 | int i = 0; |
24c129e4 KH |
3987 | char *e = to; |
3988 | unsigned char c; | |
3989 | unsigned long value; | |
caff31d4 | 3990 | int nchars = 0; |
24c129e4 | 3991 | |
9a092df0 | 3992 | while (1) |
24c129e4 | 3993 | { |
9a092df0 | 3994 | /* Process first byte of a quadruplet. */ |
24c129e4 | 3995 | |
9a092df0 | 3996 | READ_QUADRUPLET_BYTE (e-to); |
24c129e4 KH |
3997 | |
3998 | if (!IS_BASE64 (c)) | |
3999 | return -1; | |
4000 | value = base64_char_to_value[c] << 18; | |
4001 | ||
4002 | /* Process second byte of a quadruplet. */ | |
4003 | ||
9a092df0 | 4004 | READ_QUADRUPLET_BYTE (-1); |
24c129e4 KH |
4005 | |
4006 | if (!IS_BASE64 (c)) | |
4007 | return -1; | |
4008 | value |= base64_char_to_value[c] << 12; | |
4009 | ||
caff31d4 KH |
4010 | c = (unsigned char) (value >> 16); |
4011 | if (multibyte) | |
4012 | e += CHAR_STRING (c, e); | |
4013 | else | |
4014 | *e++ = c; | |
4015 | nchars++; | |
24c129e4 KH |
4016 | |
4017 | /* Process third byte of a quadruplet. */ | |
59f953a2 | 4018 | |
9a092df0 | 4019 | READ_QUADRUPLET_BYTE (-1); |
24c129e4 KH |
4020 | |
4021 | if (c == '=') | |
4022 | { | |
9a092df0 | 4023 | READ_QUADRUPLET_BYTE (-1); |
59f953a2 | 4024 | |
24c129e4 KH |
4025 | if (c != '=') |
4026 | return -1; | |
4027 | continue; | |
4028 | } | |
4029 | ||
4030 | if (!IS_BASE64 (c)) | |
4031 | return -1; | |
4032 | value |= base64_char_to_value[c] << 6; | |
4033 | ||
caff31d4 KH |
4034 | c = (unsigned char) (0xff & value >> 8); |
4035 | if (multibyte) | |
4036 | e += CHAR_STRING (c, e); | |
4037 | else | |
4038 | *e++ = c; | |
4039 | nchars++; | |
24c129e4 KH |
4040 | |
4041 | /* Process fourth byte of a quadruplet. */ | |
4042 | ||
9a092df0 | 4043 | READ_QUADRUPLET_BYTE (-1); |
24c129e4 KH |
4044 | |
4045 | if (c == '=') | |
4046 | continue; | |
4047 | ||
4048 | if (!IS_BASE64 (c)) | |
4049 | return -1; | |
4050 | value |= base64_char_to_value[c]; | |
4051 | ||
caff31d4 KH |
4052 | c = (unsigned char) (0xff & value); |
4053 | if (multibyte) | |
4054 | e += CHAR_STRING (c, e); | |
4055 | else | |
4056 | *e++ = c; | |
4057 | nchars++; | |
24c129e4 | 4058 | } |
24c129e4 | 4059 | } |
d80c6c11 GM |
4060 | |
4061 | ||
4062 | \f | |
4063 | /*********************************************************************** | |
4064 | ***** ***** | |
4065 | ***** Hash Tables ***** | |
4066 | ***** ***** | |
4067 | ***********************************************************************/ | |
4068 | ||
4069 | /* Implemented by gerd@gnu.org. This hash table implementation was | |
4070 | inspired by CMUCL hash tables. */ | |
4071 | ||
4072 | /* Ideas: | |
4073 | ||
4074 | 1. For small tables, association lists are probably faster than | |
4075 | hash tables because they have lower overhead. | |
4076 | ||
4077 | For uses of hash tables where the O(1) behavior of table | |
4078 | operations is not a requirement, it might therefore be a good idea | |
4079 | not to hash. Instead, we could just do a linear search in the | |
4080 | key_and_value vector of the hash table. This could be done | |
4081 | if a `:linear-search t' argument is given to make-hash-table. */ | |
4082 | ||
4083 | ||
d80c6c11 GM |
4084 | /* The list of all weak hash tables. Don't staticpro this one. */ |
4085 | ||
4086 | Lisp_Object Vweak_hash_tables; | |
4087 | ||
4088 | /* Various symbols. */ | |
4089 | ||
f899c503 | 4090 | Lisp_Object Qhash_table_p, Qeq, Qeql, Qequal, Qkey, Qvalue; |
ee0403b3 | 4091 | Lisp_Object QCtest, QCsize, QCrehash_size, QCrehash_threshold, QCweakness; |
ec504e6f | 4092 | Lisp_Object Qhash_table_test, Qkey_or_value, Qkey_and_value; |
d80c6c11 GM |
4093 | |
4094 | /* Function prototypes. */ | |
4095 | ||
4096 | static struct Lisp_Hash_Table *check_hash_table P_ ((Lisp_Object)); | |
d80c6c11 | 4097 | static int get_key_arg P_ ((Lisp_Object, int, Lisp_Object *, char *)); |
d80c6c11 | 4098 | static void maybe_resize_hash_table P_ ((struct Lisp_Hash_Table *)); |
d80c6c11 GM |
4099 | static int cmpfn_eql P_ ((struct Lisp_Hash_Table *, Lisp_Object, unsigned, |
4100 | Lisp_Object, unsigned)); | |
4101 | static int cmpfn_equal P_ ((struct Lisp_Hash_Table *, Lisp_Object, unsigned, | |
4102 | Lisp_Object, unsigned)); | |
4103 | static int cmpfn_user_defined P_ ((struct Lisp_Hash_Table *, Lisp_Object, | |
4104 | unsigned, Lisp_Object, unsigned)); | |
4105 | static unsigned hashfn_eq P_ ((struct Lisp_Hash_Table *, Lisp_Object)); | |
4106 | static unsigned hashfn_eql P_ ((struct Lisp_Hash_Table *, Lisp_Object)); | |
4107 | static unsigned hashfn_equal P_ ((struct Lisp_Hash_Table *, Lisp_Object)); | |
4108 | static unsigned hashfn_user_defined P_ ((struct Lisp_Hash_Table *, | |
4109 | Lisp_Object)); | |
4110 | static unsigned sxhash_string P_ ((unsigned char *, int)); | |
4111 | static unsigned sxhash_list P_ ((Lisp_Object, int)); | |
4112 | static unsigned sxhash_vector P_ ((Lisp_Object, int)); | |
4113 | static unsigned sxhash_bool_vector P_ ((Lisp_Object)); | |
a0b581cc | 4114 | static int sweep_weak_table P_ ((struct Lisp_Hash_Table *, int)); |
d80c6c11 GM |
4115 | |
4116 | ||
4117 | \f | |
4118 | /*********************************************************************** | |
4119 | Utilities | |
4120 | ***********************************************************************/ | |
4121 | ||
4122 | /* If OBJ is a Lisp hash table, return a pointer to its struct | |
4123 | Lisp_Hash_Table. Otherwise, signal an error. */ | |
4124 | ||
4125 | static struct Lisp_Hash_Table * | |
4126 | check_hash_table (obj) | |
4127 | Lisp_Object obj; | |
4128 | { | |
b7826503 | 4129 | CHECK_HASH_TABLE (obj); |
d80c6c11 GM |
4130 | return XHASH_TABLE (obj); |
4131 | } | |
4132 | ||
4133 | ||
4134 | /* Value is the next integer I >= N, N >= 0 which is "almost" a prime | |
4135 | number. */ | |
4136 | ||
6e509e80 | 4137 | int |
d80c6c11 GM |
4138 | next_almost_prime (n) |
4139 | int n; | |
4140 | { | |
4141 | if (n % 2 == 0) | |
4142 | n += 1; | |
4143 | if (n % 3 == 0) | |
4144 | n += 2; | |
4145 | if (n % 7 == 0) | |
4146 | n += 4; | |
4147 | return n; | |
4148 | } | |
4149 | ||
4150 | ||
4151 | /* Find KEY in ARGS which has size NARGS. Don't consider indices for | |
4152 | which USED[I] is non-zero. If found at index I in ARGS, set | |
4153 | USED[I] and USED[I + 1] to 1, and return I + 1. Otherwise return | |
4154 | -1. This function is used to extract a keyword/argument pair from | |
4155 | a DEFUN parameter list. */ | |
4156 | ||
4157 | static int | |
4158 | get_key_arg (key, nargs, args, used) | |
4159 | Lisp_Object key; | |
4160 | int nargs; | |
4161 | Lisp_Object *args; | |
4162 | char *used; | |
4163 | { | |
4164 | int i; | |
59f953a2 | 4165 | |
d80c6c11 GM |
4166 | for (i = 0; i < nargs - 1; ++i) |
4167 | if (!used[i] && EQ (args[i], key)) | |
4168 | break; | |
59f953a2 | 4169 | |
d80c6c11 GM |
4170 | if (i >= nargs - 1) |
4171 | i = -1; | |
4172 | else | |
4173 | { | |
4174 | used[i++] = 1; | |
4175 | used[i] = 1; | |
4176 | } | |
59f953a2 | 4177 | |
d80c6c11 GM |
4178 | return i; |
4179 | } | |
4180 | ||
4181 | ||
4182 | /* Return a Lisp vector which has the same contents as VEC but has | |
4183 | size NEW_SIZE, NEW_SIZE >= VEC->size. Entries in the resulting | |
4184 | vector that are not copied from VEC are set to INIT. */ | |
4185 | ||
fa7dad5b | 4186 | Lisp_Object |
d80c6c11 GM |
4187 | larger_vector (vec, new_size, init) |
4188 | Lisp_Object vec; | |
4189 | int new_size; | |
4190 | Lisp_Object init; | |
4191 | { | |
4192 | struct Lisp_Vector *v; | |
4193 | int i, old_size; | |
4194 | ||
4195 | xassert (VECTORP (vec)); | |
4196 | old_size = XVECTOR (vec)->size; | |
4197 | xassert (new_size >= old_size); | |
4198 | ||
b3660ef6 | 4199 | v = allocate_vector (new_size); |
d80c6c11 GM |
4200 | bcopy (XVECTOR (vec)->contents, v->contents, |
4201 | old_size * sizeof *v->contents); | |
4202 | for (i = old_size; i < new_size; ++i) | |
4203 | v->contents[i] = init; | |
4204 | XSETVECTOR (vec, v); | |
4205 | return vec; | |
4206 | } | |
4207 | ||
4208 | ||
4209 | /*********************************************************************** | |
4210 | Low-level Functions | |
4211 | ***********************************************************************/ | |
4212 | ||
d80c6c11 GM |
4213 | /* Compare KEY1 which has hash code HASH1 and KEY2 with hash code |
4214 | HASH2 in hash table H using `eql'. Value is non-zero if KEY1 and | |
4215 | KEY2 are the same. */ | |
4216 | ||
4217 | static int | |
4218 | cmpfn_eql (h, key1, hash1, key2, hash2) | |
4219 | struct Lisp_Hash_Table *h; | |
4220 | Lisp_Object key1, key2; | |
4221 | unsigned hash1, hash2; | |
4222 | { | |
2e5da676 GM |
4223 | return (FLOATP (key1) |
4224 | && FLOATP (key2) | |
e84b1dea | 4225 | && XFLOAT_DATA (key1) == XFLOAT_DATA (key2)); |
d80c6c11 GM |
4226 | } |
4227 | ||
4228 | ||
4229 | /* Compare KEY1 which has hash code HASH1 and KEY2 with hash code | |
4230 | HASH2 in hash table H using `equal'. Value is non-zero if KEY1 and | |
4231 | KEY2 are the same. */ | |
4232 | ||
4233 | static int | |
4234 | cmpfn_equal (h, key1, hash1, key2, hash2) | |
4235 | struct Lisp_Hash_Table *h; | |
4236 | Lisp_Object key1, key2; | |
4237 | unsigned hash1, hash2; | |
4238 | { | |
2e5da676 | 4239 | return hash1 == hash2 && !NILP (Fequal (key1, key2)); |
d80c6c11 GM |
4240 | } |
4241 | ||
59f953a2 | 4242 | |
d80c6c11 GM |
4243 | /* Compare KEY1 which has hash code HASH1, and KEY2 with hash code |
4244 | HASH2 in hash table H using H->user_cmp_function. Value is non-zero | |
4245 | if KEY1 and KEY2 are the same. */ | |
4246 | ||
4247 | static int | |
4248 | cmpfn_user_defined (h, key1, hash1, key2, hash2) | |
4249 | struct Lisp_Hash_Table *h; | |
4250 | Lisp_Object key1, key2; | |
4251 | unsigned hash1, hash2; | |
4252 | { | |
4253 | if (hash1 == hash2) | |
4254 | { | |
4255 | Lisp_Object args[3]; | |
59f953a2 | 4256 | |
d80c6c11 GM |
4257 | args[0] = h->user_cmp_function; |
4258 | args[1] = key1; | |
4259 | args[2] = key2; | |
4260 | return !NILP (Ffuncall (3, args)); | |
4261 | } | |
4262 | else | |
4263 | return 0; | |
4264 | } | |
4265 | ||
4266 | ||
4267 | /* Value is a hash code for KEY for use in hash table H which uses | |
4268 | `eq' to compare keys. The hash code returned is guaranteed to fit | |
4269 | in a Lisp integer. */ | |
4270 | ||
4271 | static unsigned | |
4272 | hashfn_eq (h, key) | |
4273 | struct Lisp_Hash_Table *h; | |
4274 | Lisp_Object key; | |
4275 | { | |
cf681889 GM |
4276 | unsigned hash = XUINT (key) ^ XGCTYPE (key); |
4277 | xassert ((hash & ~VALMASK) == 0); | |
4278 | return hash; | |
d80c6c11 GM |
4279 | } |
4280 | ||
4281 | ||
4282 | /* Value is a hash code for KEY for use in hash table H which uses | |
4283 | `eql' to compare keys. The hash code returned is guaranteed to fit | |
4284 | in a Lisp integer. */ | |
4285 | ||
4286 | static unsigned | |
4287 | hashfn_eql (h, key) | |
4288 | struct Lisp_Hash_Table *h; | |
4289 | Lisp_Object key; | |
4290 | { | |
cf681889 GM |
4291 | unsigned hash; |
4292 | if (FLOATP (key)) | |
4293 | hash = sxhash (key, 0); | |
d80c6c11 | 4294 | else |
cf681889 GM |
4295 | hash = XUINT (key) ^ XGCTYPE (key); |
4296 | xassert ((hash & ~VALMASK) == 0); | |
4297 | return hash; | |
d80c6c11 GM |
4298 | } |
4299 | ||
4300 | ||
4301 | /* Value is a hash code for KEY for use in hash table H which uses | |
4302 | `equal' to compare keys. The hash code returned is guaranteed to fit | |
4303 | in a Lisp integer. */ | |
4304 | ||
4305 | static unsigned | |
4306 | hashfn_equal (h, key) | |
4307 | struct Lisp_Hash_Table *h; | |
4308 | Lisp_Object key; | |
4309 | { | |
cf681889 GM |
4310 | unsigned hash = sxhash (key, 0); |
4311 | xassert ((hash & ~VALMASK) == 0); | |
4312 | return hash; | |
d80c6c11 GM |
4313 | } |
4314 | ||
4315 | ||
4316 | /* Value is a hash code for KEY for use in hash table H which uses as | |
4317 | user-defined function to compare keys. The hash code returned is | |
4318 | guaranteed to fit in a Lisp integer. */ | |
4319 | ||
4320 | static unsigned | |
4321 | hashfn_user_defined (h, key) | |
4322 | struct Lisp_Hash_Table *h; | |
4323 | Lisp_Object key; | |
4324 | { | |
4325 | Lisp_Object args[2], hash; | |
59f953a2 | 4326 | |
d80c6c11 GM |
4327 | args[0] = h->user_hash_function; |
4328 | args[1] = key; | |
4329 | hash = Ffuncall (2, args); | |
4330 | if (!INTEGERP (hash)) | |
4331 | Fsignal (Qerror, | |
1fd4c450 | 4332 | list2 (build_string ("Invalid hash code returned from \ |
d80c6c11 GM |
4333 | user-supplied hash function"), |
4334 | hash)); | |
4335 | return XUINT (hash); | |
4336 | } | |
4337 | ||
4338 | ||
4339 | /* Create and initialize a new hash table. | |
4340 | ||
4341 | TEST specifies the test the hash table will use to compare keys. | |
4342 | It must be either one of the predefined tests `eq', `eql' or | |
4343 | `equal' or a symbol denoting a user-defined test named TEST with | |
4344 | test and hash functions USER_TEST and USER_HASH. | |
59f953a2 | 4345 | |
1fd4c450 | 4346 | Give the table initial capacity SIZE, SIZE >= 0, an integer. |
d80c6c11 GM |
4347 | |
4348 | If REHASH_SIZE is an integer, it must be > 0, and this hash table's | |
4349 | new size when it becomes full is computed by adding REHASH_SIZE to | |
4350 | its old size. If REHASH_SIZE is a float, it must be > 1.0, and the | |
4351 | table's new size is computed by multiplying its old size with | |
4352 | REHASH_SIZE. | |
4353 | ||
4354 | REHASH_THRESHOLD must be a float <= 1.0, and > 0. The table will | |
4355 | be resized when the ratio of (number of entries in the table) / | |
4356 | (table size) is >= REHASH_THRESHOLD. | |
4357 | ||
4358 | WEAK specifies the weakness of the table. If non-nil, it must be | |
ec504e6f | 4359 | one of the symbols `key', `value', `key-or-value', or `key-and-value'. */ |
d80c6c11 GM |
4360 | |
4361 | Lisp_Object | |
4362 | make_hash_table (test, size, rehash_size, rehash_threshold, weak, | |
4363 | user_test, user_hash) | |
4364 | Lisp_Object test, size, rehash_size, rehash_threshold, weak; | |
4365 | Lisp_Object user_test, user_hash; | |
4366 | { | |
4367 | struct Lisp_Hash_Table *h; | |
d80c6c11 | 4368 | Lisp_Object table; |
b3660ef6 | 4369 | int index_size, i, sz; |
d80c6c11 GM |
4370 | |
4371 | /* Preconditions. */ | |
4372 | xassert (SYMBOLP (test)); | |
1fd4c450 | 4373 | xassert (INTEGERP (size) && XINT (size) >= 0); |
d80c6c11 GM |
4374 | xassert ((INTEGERP (rehash_size) && XINT (rehash_size) > 0) |
4375 | || (FLOATP (rehash_size) && XFLOATINT (rehash_size) > 1.0)); | |
4376 | xassert (FLOATP (rehash_threshold) | |
4377 | && XFLOATINT (rehash_threshold) > 0 | |
4378 | && XFLOATINT (rehash_threshold) <= 1.0); | |
4379 | ||
1fd4c450 GM |
4380 | if (XFASTINT (size) == 0) |
4381 | size = make_number (1); | |
4382 | ||
b3660ef6 GM |
4383 | /* Allocate a table and initialize it. */ |
4384 | h = allocate_hash_table (); | |
d80c6c11 GM |
4385 | |
4386 | /* Initialize hash table slots. */ | |
4387 | sz = XFASTINT (size); | |
59f953a2 | 4388 | |
d80c6c11 GM |
4389 | h->test = test; |
4390 | if (EQ (test, Qeql)) | |
4391 | { | |
4392 | h->cmpfn = cmpfn_eql; | |
4393 | h->hashfn = hashfn_eql; | |
4394 | } | |
4395 | else if (EQ (test, Qeq)) | |
4396 | { | |
2e5da676 | 4397 | h->cmpfn = NULL; |
d80c6c11 GM |
4398 | h->hashfn = hashfn_eq; |
4399 | } | |
4400 | else if (EQ (test, Qequal)) | |
4401 | { | |
4402 | h->cmpfn = cmpfn_equal; | |
4403 | h->hashfn = hashfn_equal; | |
4404 | } | |
4405 | else | |
4406 | { | |
4407 | h->user_cmp_function = user_test; | |
4408 | h->user_hash_function = user_hash; | |
4409 | h->cmpfn = cmpfn_user_defined; | |
4410 | h->hashfn = hashfn_user_defined; | |
4411 | } | |
59f953a2 | 4412 | |
d80c6c11 GM |
4413 | h->weak = weak; |
4414 | h->rehash_threshold = rehash_threshold; | |
4415 | h->rehash_size = rehash_size; | |
4416 | h->count = make_number (0); | |
4417 | h->key_and_value = Fmake_vector (make_number (2 * sz), Qnil); | |
4418 | h->hash = Fmake_vector (size, Qnil); | |
4419 | h->next = Fmake_vector (size, Qnil); | |
0690cb37 DL |
4420 | /* Cast to int here avoids losing with gcc 2.95 on Tru64/Alpha... */ |
4421 | index_size = next_almost_prime ((int) (sz / XFLOATINT (rehash_threshold))); | |
d80c6c11 GM |
4422 | h->index = Fmake_vector (make_number (index_size), Qnil); |
4423 | ||
4424 | /* Set up the free list. */ | |
4425 | for (i = 0; i < sz - 1; ++i) | |
4426 | HASH_NEXT (h, i) = make_number (i + 1); | |
4427 | h->next_free = make_number (0); | |
4428 | ||
4429 | XSET_HASH_TABLE (table, h); | |
4430 | xassert (HASH_TABLE_P (table)); | |
4431 | xassert (XHASH_TABLE (table) == h); | |
4432 | ||
4433 | /* Maybe add this hash table to the list of all weak hash tables. */ | |
4434 | if (NILP (h->weak)) | |
4435 | h->next_weak = Qnil; | |
4436 | else | |
4437 | { | |
4438 | h->next_weak = Vweak_hash_tables; | |
4439 | Vweak_hash_tables = table; | |
4440 | } | |
4441 | ||
4442 | return table; | |
4443 | } | |
4444 | ||
4445 | ||
f899c503 GM |
4446 | /* Return a copy of hash table H1. Keys and values are not copied, |
4447 | only the table itself is. */ | |
4448 | ||
4449 | Lisp_Object | |
4450 | copy_hash_table (h1) | |
4451 | struct Lisp_Hash_Table *h1; | |
4452 | { | |
4453 | Lisp_Object table; | |
4454 | struct Lisp_Hash_Table *h2; | |
44dc78e0 | 4455 | struct Lisp_Vector *next; |
59f953a2 | 4456 | |
b3660ef6 | 4457 | h2 = allocate_hash_table (); |
f899c503 GM |
4458 | next = h2->vec_next; |
4459 | bcopy (h1, h2, sizeof *h2); | |
4460 | h2->vec_next = next; | |
4461 | h2->key_and_value = Fcopy_sequence (h1->key_and_value); | |
4462 | h2->hash = Fcopy_sequence (h1->hash); | |
4463 | h2->next = Fcopy_sequence (h1->next); | |
4464 | h2->index = Fcopy_sequence (h1->index); | |
4465 | XSET_HASH_TABLE (table, h2); | |
4466 | ||
4467 | /* Maybe add this hash table to the list of all weak hash tables. */ | |
4468 | if (!NILP (h2->weak)) | |
4469 | { | |
4470 | h2->next_weak = Vweak_hash_tables; | |
4471 | Vweak_hash_tables = table; | |
4472 | } | |
4473 | ||
4474 | return table; | |
4475 | } | |
4476 | ||
4477 | ||
d80c6c11 GM |
4478 | /* Resize hash table H if it's too full. If H cannot be resized |
4479 | because it's already too large, throw an error. */ | |
4480 | ||
4481 | static INLINE void | |
4482 | maybe_resize_hash_table (h) | |
4483 | struct Lisp_Hash_Table *h; | |
4484 | { | |
4485 | if (NILP (h->next_free)) | |
4486 | { | |
4487 | int old_size = HASH_TABLE_SIZE (h); | |
4488 | int i, new_size, index_size; | |
59f953a2 | 4489 | |
d80c6c11 GM |
4490 | if (INTEGERP (h->rehash_size)) |
4491 | new_size = old_size + XFASTINT (h->rehash_size); | |
4492 | else | |
4493 | new_size = old_size * XFLOATINT (h->rehash_size); | |
0d6ba42e | 4494 | new_size = max (old_size + 1, new_size); |
0690cb37 DL |
4495 | index_size = next_almost_prime ((int) |
4496 | (new_size | |
4497 | / XFLOATINT (h->rehash_threshold))); | |
d80c6c11 GM |
4498 | if (max (index_size, 2 * new_size) & ~VALMASK) |
4499 | error ("Hash table too large to resize"); | |
4500 | ||
4501 | h->key_and_value = larger_vector (h->key_and_value, 2 * new_size, Qnil); | |
4502 | h->next = larger_vector (h->next, new_size, Qnil); | |
4503 | h->hash = larger_vector (h->hash, new_size, Qnil); | |
4504 | h->index = Fmake_vector (make_number (index_size), Qnil); | |
4505 | ||
4506 | /* Update the free list. Do it so that new entries are added at | |
4507 | the end of the free list. This makes some operations like | |
4508 | maphash faster. */ | |
4509 | for (i = old_size; i < new_size - 1; ++i) | |
4510 | HASH_NEXT (h, i) = make_number (i + 1); | |
59f953a2 | 4511 | |
d80c6c11 GM |
4512 | if (!NILP (h->next_free)) |
4513 | { | |
4514 | Lisp_Object last, next; | |
59f953a2 | 4515 | |
d80c6c11 GM |
4516 | last = h->next_free; |
4517 | while (next = HASH_NEXT (h, XFASTINT (last)), | |
4518 | !NILP (next)) | |
4519 | last = next; | |
59f953a2 | 4520 | |
d80c6c11 GM |
4521 | HASH_NEXT (h, XFASTINT (last)) = make_number (old_size); |
4522 | } | |
4523 | else | |
4524 | XSETFASTINT (h->next_free, old_size); | |
4525 | ||
4526 | /* Rehash. */ | |
4527 | for (i = 0; i < old_size; ++i) | |
4528 | if (!NILP (HASH_HASH (h, i))) | |
4529 | { | |
4530 | unsigned hash_code = XUINT (HASH_HASH (h, i)); | |
4531 | int start_of_bucket = hash_code % XVECTOR (h->index)->size; | |
4532 | HASH_NEXT (h, i) = HASH_INDEX (h, start_of_bucket); | |
4533 | HASH_INDEX (h, start_of_bucket) = make_number (i); | |
4534 | } | |
59f953a2 | 4535 | } |
d80c6c11 GM |
4536 | } |
4537 | ||
4538 | ||
4539 | /* Lookup KEY in hash table H. If HASH is non-null, return in *HASH | |
4540 | the hash code of KEY. Value is the index of the entry in H | |
4541 | matching KEY, or -1 if not found. */ | |
4542 | ||
4543 | int | |
4544 | hash_lookup (h, key, hash) | |
4545 | struct Lisp_Hash_Table *h; | |
4546 | Lisp_Object key; | |
4547 | unsigned *hash; | |
4548 | { | |
4549 | unsigned hash_code; | |
4550 | int start_of_bucket; | |
4551 | Lisp_Object idx; | |
4552 | ||
4553 | hash_code = h->hashfn (h, key); | |
4554 | if (hash) | |
4555 | *hash = hash_code; | |
59f953a2 | 4556 | |
d80c6c11 GM |
4557 | start_of_bucket = hash_code % XVECTOR (h->index)->size; |
4558 | idx = HASH_INDEX (h, start_of_bucket); | |
4559 | ||
f5c75033 | 4560 | /* We need not gcpro idx since it's either an integer or nil. */ |
d80c6c11 GM |
4561 | while (!NILP (idx)) |
4562 | { | |
4563 | int i = XFASTINT (idx); | |
2e5da676 GM |
4564 | if (EQ (key, HASH_KEY (h, i)) |
4565 | || (h->cmpfn | |
4566 | && h->cmpfn (h, key, hash_code, | |
7c752c80 | 4567 | HASH_KEY (h, i), XUINT (HASH_HASH (h, i))))) |
d80c6c11 GM |
4568 | break; |
4569 | idx = HASH_NEXT (h, i); | |
4570 | } | |
4571 | ||
4572 | return NILP (idx) ? -1 : XFASTINT (idx); | |
4573 | } | |
4574 | ||
4575 | ||
4576 | /* Put an entry into hash table H that associates KEY with VALUE. | |
64a5094a KH |
4577 | HASH is a previously computed hash code of KEY. |
4578 | Value is the index of the entry in H matching KEY. */ | |
d80c6c11 | 4579 | |
64a5094a | 4580 | int |
d80c6c11 GM |
4581 | hash_put (h, key, value, hash) |
4582 | struct Lisp_Hash_Table *h; | |
4583 | Lisp_Object key, value; | |
4584 | unsigned hash; | |
4585 | { | |
4586 | int start_of_bucket, i; | |
4587 | ||
4588 | xassert ((hash & ~VALMASK) == 0); | |
4589 | ||
4590 | /* Increment count after resizing because resizing may fail. */ | |
4591 | maybe_resize_hash_table (h); | |
4592 | h->count = make_number (XFASTINT (h->count) + 1); | |
59f953a2 | 4593 | |
d80c6c11 GM |
4594 | /* Store key/value in the key_and_value vector. */ |
4595 | i = XFASTINT (h->next_free); | |
4596 | h->next_free = HASH_NEXT (h, i); | |
4597 | HASH_KEY (h, i) = key; | |
4598 | HASH_VALUE (h, i) = value; | |
4599 | ||
4600 | /* Remember its hash code. */ | |
4601 | HASH_HASH (h, i) = make_number (hash); | |
4602 | ||
4603 | /* Add new entry to its collision chain. */ | |
4604 | start_of_bucket = hash % XVECTOR (h->index)->size; | |
4605 | HASH_NEXT (h, i) = HASH_INDEX (h, start_of_bucket); | |
4606 | HASH_INDEX (h, start_of_bucket) = make_number (i); | |
64a5094a | 4607 | return i; |
d80c6c11 GM |
4608 | } |
4609 | ||
4610 | ||
4611 | /* Remove the entry matching KEY from hash table H, if there is one. */ | |
4612 | ||
4613 | void | |
4614 | hash_remove (h, key) | |
4615 | struct Lisp_Hash_Table *h; | |
4616 | Lisp_Object key; | |
4617 | { | |
4618 | unsigned hash_code; | |
4619 | int start_of_bucket; | |
4620 | Lisp_Object idx, prev; | |
4621 | ||
4622 | hash_code = h->hashfn (h, key); | |
4623 | start_of_bucket = hash_code % XVECTOR (h->index)->size; | |
4624 | idx = HASH_INDEX (h, start_of_bucket); | |
4625 | prev = Qnil; | |
4626 | ||
f5c75033 | 4627 | /* We need not gcpro idx, prev since they're either integers or nil. */ |
d80c6c11 GM |
4628 | while (!NILP (idx)) |
4629 | { | |
4630 | int i = XFASTINT (idx); | |
4631 | ||
2e5da676 GM |
4632 | if (EQ (key, HASH_KEY (h, i)) |
4633 | || (h->cmpfn | |
4634 | && h->cmpfn (h, key, hash_code, | |
7c752c80 | 4635 | HASH_KEY (h, i), XUINT (HASH_HASH (h, i))))) |
d80c6c11 GM |
4636 | { |
4637 | /* Take entry out of collision chain. */ | |
4638 | if (NILP (prev)) | |
4639 | HASH_INDEX (h, start_of_bucket) = HASH_NEXT (h, i); | |
4640 | else | |
4641 | HASH_NEXT (h, XFASTINT (prev)) = HASH_NEXT (h, i); | |
4642 | ||
4643 | /* Clear slots in key_and_value and add the slots to | |
4644 | the free list. */ | |
4645 | HASH_KEY (h, i) = HASH_VALUE (h, i) = HASH_HASH (h, i) = Qnil; | |
4646 | HASH_NEXT (h, i) = h->next_free; | |
4647 | h->next_free = make_number (i); | |
4648 | h->count = make_number (XFASTINT (h->count) - 1); | |
4649 | xassert (XINT (h->count) >= 0); | |
4650 | break; | |
4651 | } | |
4652 | else | |
4653 | { | |
4654 | prev = idx; | |
4655 | idx = HASH_NEXT (h, i); | |
4656 | } | |
4657 | } | |
4658 | } | |
4659 | ||
4660 | ||
4661 | /* Clear hash table H. */ | |
4662 | ||
4663 | void | |
4664 | hash_clear (h) | |
4665 | struct Lisp_Hash_Table *h; | |
4666 | { | |
4667 | if (XFASTINT (h->count) > 0) | |
4668 | { | |
4669 | int i, size = HASH_TABLE_SIZE (h); | |
4670 | ||
4671 | for (i = 0; i < size; ++i) | |
4672 | { | |
4673 | HASH_NEXT (h, i) = i < size - 1 ? make_number (i + 1) : Qnil; | |
4674 | HASH_KEY (h, i) = Qnil; | |
4675 | HASH_VALUE (h, i) = Qnil; | |
4676 | HASH_HASH (h, i) = Qnil; | |
4677 | } | |
4678 | ||
4679 | for (i = 0; i < XVECTOR (h->index)->size; ++i) | |
4680 | XVECTOR (h->index)->contents[i] = Qnil; | |
4681 | ||
4682 | h->next_free = make_number (0); | |
4683 | h->count = make_number (0); | |
4684 | } | |
4685 | } | |
4686 | ||
4687 | ||
4688 | \f | |
4689 | /************************************************************************ | |
4690 | Weak Hash Tables | |
4691 | ************************************************************************/ | |
4692 | ||
a0b581cc GM |
4693 | /* Sweep weak hash table H. REMOVE_ENTRIES_P non-zero means remove |
4694 | entries from the table that don't survive the current GC. | |
4695 | REMOVE_ENTRIES_P zero means mark entries that are in use. Value is | |
4696 | non-zero if anything was marked. */ | |
4697 | ||
4698 | static int | |
4699 | sweep_weak_table (h, remove_entries_p) | |
4700 | struct Lisp_Hash_Table *h; | |
4701 | int remove_entries_p; | |
4702 | { | |
4703 | int bucket, n, marked; | |
59f953a2 | 4704 | |
a0b581cc GM |
4705 | n = XVECTOR (h->index)->size & ~ARRAY_MARK_FLAG; |
4706 | marked = 0; | |
59f953a2 | 4707 | |
a0b581cc GM |
4708 | for (bucket = 0; bucket < n; ++bucket) |
4709 | { | |
1e546714 | 4710 | Lisp_Object idx, next, prev; |
a0b581cc GM |
4711 | |
4712 | /* Follow collision chain, removing entries that | |
4713 | don't survive this garbage collection. */ | |
a0b581cc | 4714 | prev = Qnil; |
1e546714 | 4715 | for (idx = HASH_INDEX (h, bucket); !GC_NILP (idx); idx = next) |
a0b581cc | 4716 | { |
a0b581cc | 4717 | int i = XFASTINT (idx); |
1e546714 GM |
4718 | int key_known_to_survive_p = survives_gc_p (HASH_KEY (h, i)); |
4719 | int value_known_to_survive_p = survives_gc_p (HASH_VALUE (h, i)); | |
4720 | int remove_p; | |
59f953a2 | 4721 | |
a0b581cc | 4722 | if (EQ (h->weak, Qkey)) |
aee625fa | 4723 | remove_p = !key_known_to_survive_p; |
a0b581cc | 4724 | else if (EQ (h->weak, Qvalue)) |
aee625fa | 4725 | remove_p = !value_known_to_survive_p; |
ec504e6f | 4726 | else if (EQ (h->weak, Qkey_or_value)) |
728c5d9d | 4727 | remove_p = !(key_known_to_survive_p || value_known_to_survive_p); |
ec504e6f | 4728 | else if (EQ (h->weak, Qkey_and_value)) |
728c5d9d | 4729 | remove_p = !(key_known_to_survive_p && value_known_to_survive_p); |
a0b581cc GM |
4730 | else |
4731 | abort (); | |
59f953a2 | 4732 | |
a0b581cc GM |
4733 | next = HASH_NEXT (h, i); |
4734 | ||
4735 | if (remove_entries_p) | |
4736 | { | |
4737 | if (remove_p) | |
4738 | { | |
4739 | /* Take out of collision chain. */ | |
4740 | if (GC_NILP (prev)) | |
1e546714 | 4741 | HASH_INDEX (h, bucket) = next; |
a0b581cc GM |
4742 | else |
4743 | HASH_NEXT (h, XFASTINT (prev)) = next; | |
59f953a2 | 4744 | |
a0b581cc GM |
4745 | /* Add to free list. */ |
4746 | HASH_NEXT (h, i) = h->next_free; | |
4747 | h->next_free = idx; | |
59f953a2 | 4748 | |
a0b581cc GM |
4749 | /* Clear key, value, and hash. */ |
4750 | HASH_KEY (h, i) = HASH_VALUE (h, i) = Qnil; | |
4751 | HASH_HASH (h, i) = Qnil; | |
59f953a2 | 4752 | |
a0b581cc GM |
4753 | h->count = make_number (XFASTINT (h->count) - 1); |
4754 | } | |
4755 | } | |
4756 | else | |
4757 | { | |
4758 | if (!remove_p) | |
4759 | { | |
4760 | /* Make sure key and value survive. */ | |
aee625fa GM |
4761 | if (!key_known_to_survive_p) |
4762 | { | |
9568e3d8 | 4763 | mark_object (HASH_KEY (h, i)); |
aee625fa GM |
4764 | marked = 1; |
4765 | } | |
4766 | ||
4767 | if (!value_known_to_survive_p) | |
4768 | { | |
9568e3d8 | 4769 | mark_object (HASH_VALUE (h, i)); |
aee625fa GM |
4770 | marked = 1; |
4771 | } | |
a0b581cc GM |
4772 | } |
4773 | } | |
a0b581cc GM |
4774 | } |
4775 | } | |
4776 | ||
4777 | return marked; | |
4778 | } | |
4779 | ||
d80c6c11 GM |
4780 | /* Remove elements from weak hash tables that don't survive the |
4781 | current garbage collection. Remove weak tables that don't survive | |
4782 | from Vweak_hash_tables. Called from gc_sweep. */ | |
4783 | ||
4784 | void | |
4785 | sweep_weak_hash_tables () | |
4786 | { | |
ac0e96ee GM |
4787 | Lisp_Object table, used, next; |
4788 | struct Lisp_Hash_Table *h; | |
a0b581cc GM |
4789 | int marked; |
4790 | ||
4791 | /* Mark all keys and values that are in use. Keep on marking until | |
4792 | there is no more change. This is necessary for cases like | |
4793 | value-weak table A containing an entry X -> Y, where Y is used in a | |
4794 | key-weak table B, Z -> Y. If B comes after A in the list of weak | |
4795 | tables, X -> Y might be removed from A, although when looking at B | |
4796 | one finds that it shouldn't. */ | |
4797 | do | |
4798 | { | |
4799 | marked = 0; | |
4800 | for (table = Vweak_hash_tables; !GC_NILP (table); table = h->next_weak) | |
4801 | { | |
4802 | h = XHASH_TABLE (table); | |
4803 | if (h->size & ARRAY_MARK_FLAG) | |
4804 | marked |= sweep_weak_table (h, 0); | |
4805 | } | |
4806 | } | |
4807 | while (marked); | |
d80c6c11 | 4808 | |
a0b581cc | 4809 | /* Remove tables and entries that aren't used. */ |
ac0e96ee | 4810 | for (table = Vweak_hash_tables, used = Qnil; !GC_NILP (table); table = next) |
d80c6c11 | 4811 | { |
d80c6c11 | 4812 | h = XHASH_TABLE (table); |
ac0e96ee | 4813 | next = h->next_weak; |
91f78c99 | 4814 | |
d80c6c11 GM |
4815 | if (h->size & ARRAY_MARK_FLAG) |
4816 | { | |
ac0e96ee | 4817 | /* TABLE is marked as used. Sweep its contents. */ |
d80c6c11 | 4818 | if (XFASTINT (h->count) > 0) |
a0b581cc | 4819 | sweep_weak_table (h, 1); |
ac0e96ee GM |
4820 | |
4821 | /* Add table to the list of used weak hash tables. */ | |
4822 | h->next_weak = used; | |
4823 | used = table; | |
d80c6c11 GM |
4824 | } |
4825 | } | |
ac0e96ee GM |
4826 | |
4827 | Vweak_hash_tables = used; | |
d80c6c11 GM |
4828 | } |
4829 | ||
4830 | ||
4831 | \f | |
4832 | /*********************************************************************** | |
4833 | Hash Code Computation | |
4834 | ***********************************************************************/ | |
4835 | ||
4836 | /* Maximum depth up to which to dive into Lisp structures. */ | |
4837 | ||
4838 | #define SXHASH_MAX_DEPTH 3 | |
4839 | ||
4840 | /* Maximum length up to which to take list and vector elements into | |
4841 | account. */ | |
4842 | ||
4843 | #define SXHASH_MAX_LEN 7 | |
4844 | ||
4845 | /* Combine two integers X and Y for hashing. */ | |
4846 | ||
4847 | #define SXHASH_COMBINE(X, Y) \ | |
ada0fa14 | 4848 | ((((unsigned)(X) << 4) + (((unsigned)(X) >> 24) & 0x0fffffff)) \ |
d80c6c11 GM |
4849 | + (unsigned)(Y)) |
4850 | ||
4851 | ||
cf681889 GM |
4852 | /* Return a hash for string PTR which has length LEN. The hash |
4853 | code returned is guaranteed to fit in a Lisp integer. */ | |
d80c6c11 GM |
4854 | |
4855 | static unsigned | |
4856 | sxhash_string (ptr, len) | |
4857 | unsigned char *ptr; | |
4858 | int len; | |
4859 | { | |
4860 | unsigned char *p = ptr; | |
4861 | unsigned char *end = p + len; | |
4862 | unsigned char c; | |
4863 | unsigned hash = 0; | |
4864 | ||
4865 | while (p != end) | |
4866 | { | |
4867 | c = *p++; | |
4868 | if (c >= 0140) | |
4869 | c -= 40; | |
4870 | hash = ((hash << 3) + (hash >> 28) + c); | |
4871 | } | |
59f953a2 | 4872 | |
cf681889 | 4873 | return hash & VALMASK; |
d80c6c11 GM |
4874 | } |
4875 | ||
4876 | ||
4877 | /* Return a hash for list LIST. DEPTH is the current depth in the | |
4878 | list. We don't recurse deeper than SXHASH_MAX_DEPTH in it. */ | |
4879 | ||
4880 | static unsigned | |
4881 | sxhash_list (list, depth) | |
4882 | Lisp_Object list; | |
4883 | int depth; | |
4884 | { | |
4885 | unsigned hash = 0; | |
4886 | int i; | |
59f953a2 | 4887 | |
d80c6c11 GM |
4888 | if (depth < SXHASH_MAX_DEPTH) |
4889 | for (i = 0; | |
4890 | CONSP (list) && i < SXHASH_MAX_LEN; | |
4891 | list = XCDR (list), ++i) | |
4892 | { | |
4893 | unsigned hash2 = sxhash (XCAR (list), depth + 1); | |
4894 | hash = SXHASH_COMBINE (hash, hash2); | |
4895 | } | |
4896 | ||
4897 | return hash; | |
4898 | } | |
4899 | ||
4900 | ||
4901 | /* Return a hash for vector VECTOR. DEPTH is the current depth in | |
4902 | the Lisp structure. */ | |
4903 | ||
4904 | static unsigned | |
4905 | sxhash_vector (vec, depth) | |
4906 | Lisp_Object vec; | |
4907 | int depth; | |
4908 | { | |
4909 | unsigned hash = XVECTOR (vec)->size; | |
4910 | int i, n; | |
4911 | ||
4912 | n = min (SXHASH_MAX_LEN, XVECTOR (vec)->size); | |
4913 | for (i = 0; i < n; ++i) | |
4914 | { | |
4915 | unsigned hash2 = sxhash (XVECTOR (vec)->contents[i], depth + 1); | |
4916 | hash = SXHASH_COMBINE (hash, hash2); | |
4917 | } | |
4918 | ||
4919 | return hash; | |
4920 | } | |
4921 | ||
4922 | ||
4923 | /* Return a hash for bool-vector VECTOR. */ | |
4924 | ||
4925 | static unsigned | |
4926 | sxhash_bool_vector (vec) | |
4927 | Lisp_Object vec; | |
4928 | { | |
4929 | unsigned hash = XBOOL_VECTOR (vec)->size; | |
4930 | int i, n; | |
4931 | ||
4932 | n = min (SXHASH_MAX_LEN, XBOOL_VECTOR (vec)->vector_size); | |
4933 | for (i = 0; i < n; ++i) | |
4934 | hash = SXHASH_COMBINE (hash, XBOOL_VECTOR (vec)->data[i]); | |
4935 | ||
4936 | return hash; | |
4937 | } | |
4938 | ||
4939 | ||
4940 | /* Return a hash code for OBJ. DEPTH is the current depth in the Lisp | |
4941 | structure. Value is an unsigned integer clipped to VALMASK. */ | |
4942 | ||
4943 | unsigned | |
4944 | sxhash (obj, depth) | |
4945 | Lisp_Object obj; | |
4946 | int depth; | |
4947 | { | |
4948 | unsigned hash; | |
4949 | ||
4950 | if (depth > SXHASH_MAX_DEPTH) | |
4951 | return 0; | |
59f953a2 | 4952 | |
d80c6c11 GM |
4953 | switch (XTYPE (obj)) |
4954 | { | |
4955 | case Lisp_Int: | |
4956 | hash = XUINT (obj); | |
4957 | break; | |
4958 | ||
4959 | case Lisp_Symbol: | |
d5db4077 KR |
4960 | hash = sxhash_string (SDATA (SYMBOL_NAME (obj)), |
4961 | SCHARS (SYMBOL_NAME (obj))); | |
d80c6c11 GM |
4962 | break; |
4963 | ||
4964 | case Lisp_Misc: | |
4965 | hash = XUINT (obj); | |
4966 | break; | |
4967 | ||
4968 | case Lisp_String: | |
d5db4077 | 4969 | hash = sxhash_string (SDATA (obj), SCHARS (obj)); |
d80c6c11 GM |
4970 | break; |
4971 | ||
4972 | /* This can be everything from a vector to an overlay. */ | |
4973 | case Lisp_Vectorlike: | |
4974 | if (VECTORP (obj)) | |
4975 | /* According to the CL HyperSpec, two arrays are equal only if | |
4976 | they are `eq', except for strings and bit-vectors. In | |
4977 | Emacs, this works differently. We have to compare element | |
4978 | by element. */ | |
4979 | hash = sxhash_vector (obj, depth); | |
4980 | else if (BOOL_VECTOR_P (obj)) | |
4981 | hash = sxhash_bool_vector (obj); | |
4982 | else | |
4983 | /* Others are `equal' if they are `eq', so let's take their | |
4984 | address as hash. */ | |
4985 | hash = XUINT (obj); | |
4986 | break; | |
4987 | ||
4988 | case Lisp_Cons: | |
4989 | hash = sxhash_list (obj, depth); | |
4990 | break; | |
4991 | ||
4992 | case Lisp_Float: | |
4993 | { | |
e84b1dea GM |
4994 | unsigned char *p = (unsigned char *) &XFLOAT_DATA (obj); |
4995 | unsigned char *e = p + sizeof XFLOAT_DATA (obj); | |
d80c6c11 GM |
4996 | for (hash = 0; p < e; ++p) |
4997 | hash = SXHASH_COMBINE (hash, *p); | |
4998 | break; | |
4999 | } | |
5000 | ||
5001 | default: | |
5002 | abort (); | |
5003 | } | |
5004 | ||
5005 | return hash & VALMASK; | |
5006 | } | |
5007 | ||
5008 | ||
5009 | \f | |
5010 | /*********************************************************************** | |
5011 | Lisp Interface | |
5012 | ***********************************************************************/ | |
5013 | ||
5014 | ||
5015 | DEFUN ("sxhash", Fsxhash, Ssxhash, 1, 1, 0, | |
e9d8ddc9 MB |
5016 | doc: /* Compute a hash code for OBJ and return it as integer. */) |
5017 | (obj) | |
d80c6c11 GM |
5018 | Lisp_Object obj; |
5019 | { | |
5020 | unsigned hash = sxhash (obj, 0);; | |
5021 | return make_number (hash); | |
5022 | } | |
5023 | ||
5024 | ||
5025 | DEFUN ("make-hash-table", Fmake_hash_table, Smake_hash_table, 0, MANY, 0, | |
e9d8ddc9 | 5026 | doc: /* Create and return a new hash table. |
91f78c99 | 5027 | |
47cebab1 GM |
5028 | Arguments are specified as keyword/argument pairs. The following |
5029 | arguments are defined: | |
5030 | ||
5031 | :test TEST -- TEST must be a symbol that specifies how to compare | |
5032 | keys. Default is `eql'. Predefined are the tests `eq', `eql', and | |
5033 | `equal'. User-supplied test and hash functions can be specified via | |
5034 | `define-hash-table-test'. | |
5035 | ||
5036 | :size SIZE -- A hint as to how many elements will be put in the table. | |
5037 | Default is 65. | |
5038 | ||
5039 | :rehash-size REHASH-SIZE - Indicates how to expand the table when it | |
5040 | fills up. If REHASH-SIZE is an integer, add that many space. If it | |
5041 | is a float, it must be > 1.0, and the new size is computed by | |
5042 | multiplying the old size with that factor. Default is 1.5. | |
5043 | ||
5044 | :rehash-threshold THRESHOLD -- THRESHOLD must a float > 0, and <= 1.0. | |
5045 | Resize the hash table when ratio of the number of entries in the | |
5046 | table. Default is 0.8. | |
5047 | ||
5048 | :weakness WEAK -- WEAK must be one of nil, t, `key', `value', | |
5049 | `key-or-value', or `key-and-value'. If WEAK is not nil, the table | |
5050 | returned is a weak table. Key/value pairs are removed from a weak | |
5051 | hash table when there are no non-weak references pointing to their | |
5052 | key, value, one of key or value, or both key and value, depending on | |
5053 | WEAK. WEAK t is equivalent to `key-and-value'. Default value of WEAK | |
4bf8e2a3 MB |
5054 | is nil. |
5055 | ||
5056 | usage: (make-hash-table &rest KEYWORD-ARGS) */) | |
e9d8ddc9 | 5057 | (nargs, args) |
d80c6c11 GM |
5058 | int nargs; |
5059 | Lisp_Object *args; | |
5060 | { | |
5061 | Lisp_Object test, size, rehash_size, rehash_threshold, weak; | |
5062 | Lisp_Object user_test, user_hash; | |
5063 | char *used; | |
5064 | int i; | |
5065 | ||
5066 | /* The vector `used' is used to keep track of arguments that | |
5067 | have been consumed. */ | |
5068 | used = (char *) alloca (nargs * sizeof *used); | |
5069 | bzero (used, nargs * sizeof *used); | |
5070 | ||
5071 | /* See if there's a `:test TEST' among the arguments. */ | |
5072 | i = get_key_arg (QCtest, nargs, args, used); | |
5073 | test = i < 0 ? Qeql : args[i]; | |
5074 | if (!EQ (test, Qeq) && !EQ (test, Qeql) && !EQ (test, Qequal)) | |
5075 | { | |
5076 | /* See if it is a user-defined test. */ | |
5077 | Lisp_Object prop; | |
59f953a2 | 5078 | |
d80c6c11 | 5079 | prop = Fget (test, Qhash_table_test); |
c1dd95fc | 5080 | if (!CONSP (prop) || !CONSP (XCDR (prop))) |
1fd4c450 | 5081 | Fsignal (Qerror, list2 (build_string ("Invalid hash table test"), |
d80c6c11 | 5082 | test)); |
c1dd95fc RS |
5083 | user_test = XCAR (prop); |
5084 | user_hash = XCAR (XCDR (prop)); | |
d80c6c11 GM |
5085 | } |
5086 | else | |
5087 | user_test = user_hash = Qnil; | |
5088 | ||
5089 | /* See if there's a `:size SIZE' argument. */ | |
5090 | i = get_key_arg (QCsize, nargs, args, used); | |
cf42cb72 SM |
5091 | size = i < 0 ? Qnil : args[i]; |
5092 | if (NILP (size)) | |
5093 | size = make_number (DEFAULT_HASH_SIZE); | |
5094 | else if (!INTEGERP (size) || XINT (size) < 0) | |
d80c6c11 | 5095 | Fsignal (Qerror, |
1fd4c450 | 5096 | list2 (build_string ("Invalid hash table size"), |
d80c6c11 GM |
5097 | size)); |
5098 | ||
5099 | /* Look for `:rehash-size SIZE'. */ | |
5100 | i = get_key_arg (QCrehash_size, nargs, args, used); | |
5101 | rehash_size = i < 0 ? make_float (DEFAULT_REHASH_SIZE) : args[i]; | |
5102 | if (!NUMBERP (rehash_size) | |
5103 | || (INTEGERP (rehash_size) && XINT (rehash_size) <= 0) | |
5104 | || XFLOATINT (rehash_size) <= 1.0) | |
5105 | Fsignal (Qerror, | |
1fd4c450 | 5106 | list2 (build_string ("Invalid hash table rehash size"), |
d80c6c11 | 5107 | rehash_size)); |
59f953a2 | 5108 | |
d80c6c11 GM |
5109 | /* Look for `:rehash-threshold THRESHOLD'. */ |
5110 | i = get_key_arg (QCrehash_threshold, nargs, args, used); | |
5111 | rehash_threshold = i < 0 ? make_float (DEFAULT_REHASH_THRESHOLD) : args[i]; | |
5112 | if (!FLOATP (rehash_threshold) | |
5113 | || XFLOATINT (rehash_threshold) <= 0.0 | |
5114 | || XFLOATINT (rehash_threshold) > 1.0) | |
5115 | Fsignal (Qerror, | |
1fd4c450 | 5116 | list2 (build_string ("Invalid hash table rehash threshold"), |
d80c6c11 | 5117 | rehash_threshold)); |
59f953a2 | 5118 | |
ee0403b3 GM |
5119 | /* Look for `:weakness WEAK'. */ |
5120 | i = get_key_arg (QCweakness, nargs, args, used); | |
d80c6c11 | 5121 | weak = i < 0 ? Qnil : args[i]; |
ec504e6f GM |
5122 | if (EQ (weak, Qt)) |
5123 | weak = Qkey_and_value; | |
d80c6c11 | 5124 | if (!NILP (weak) |
f899c503 | 5125 | && !EQ (weak, Qkey) |
ec504e6f GM |
5126 | && !EQ (weak, Qvalue) |
5127 | && !EQ (weak, Qkey_or_value) | |
5128 | && !EQ (weak, Qkey_and_value)) | |
1fd4c450 | 5129 | Fsignal (Qerror, list2 (build_string ("Invalid hash table weakness"), |
d80c6c11 | 5130 | weak)); |
59f953a2 | 5131 | |
d80c6c11 GM |
5132 | /* Now, all args should have been used up, or there's a problem. */ |
5133 | for (i = 0; i < nargs; ++i) | |
5134 | if (!used[i]) | |
5135 | Fsignal (Qerror, | |
5136 | list2 (build_string ("Invalid argument list"), args[i])); | |
5137 | ||
5138 | return make_hash_table (test, size, rehash_size, rehash_threshold, weak, | |
5139 | user_test, user_hash); | |
5140 | } | |
5141 | ||
5142 | ||
f899c503 | 5143 | DEFUN ("copy-hash-table", Fcopy_hash_table, Scopy_hash_table, 1, 1, 0, |
e9d8ddc9 MB |
5144 | doc: /* Return a copy of hash table TABLE. */) |
5145 | (table) | |
f899c503 GM |
5146 | Lisp_Object table; |
5147 | { | |
5148 | return copy_hash_table (check_hash_table (table)); | |
5149 | } | |
5150 | ||
5151 | ||
d80c6c11 | 5152 | DEFUN ("hash-table-count", Fhash_table_count, Shash_table_count, 1, 1, 0, |
e9d8ddc9 MB |
5153 | doc: /* Return the number of elements in TABLE. */) |
5154 | (table) | |
47cebab1 | 5155 | Lisp_Object table; |
d80c6c11 GM |
5156 | { |
5157 | return check_hash_table (table)->count; | |
5158 | } | |
5159 | ||
59f953a2 | 5160 | |
d80c6c11 GM |
5161 | DEFUN ("hash-table-rehash-size", Fhash_table_rehash_size, |
5162 | Shash_table_rehash_size, 1, 1, 0, | |
e9d8ddc9 MB |
5163 | doc: /* Return the current rehash size of TABLE. */) |
5164 | (table) | |
47cebab1 | 5165 | Lisp_Object table; |
d80c6c11 GM |
5166 | { |
5167 | return check_hash_table (table)->rehash_size; | |
5168 | } | |
59f953a2 | 5169 | |
d80c6c11 GM |
5170 | |
5171 | DEFUN ("hash-table-rehash-threshold", Fhash_table_rehash_threshold, | |
5172 | Shash_table_rehash_threshold, 1, 1, 0, | |
e9d8ddc9 MB |
5173 | doc: /* Return the current rehash threshold of TABLE. */) |
5174 | (table) | |
47cebab1 | 5175 | Lisp_Object table; |
d80c6c11 GM |
5176 | { |
5177 | return check_hash_table (table)->rehash_threshold; | |
5178 | } | |
59f953a2 | 5179 | |
d80c6c11 GM |
5180 | |
5181 | DEFUN ("hash-table-size", Fhash_table_size, Shash_table_size, 1, 1, 0, | |
e9d8ddc9 | 5182 | doc: /* Return the size of TABLE. |
47cebab1 GM |
5183 | The size can be used as an argument to `make-hash-table' to create |
5184 | a hash table than can hold as many elements of TABLE holds | |
e9d8ddc9 MB |
5185 | without need for resizing. */) |
5186 | (table) | |
d80c6c11 GM |
5187 | Lisp_Object table; |
5188 | { | |
5189 | struct Lisp_Hash_Table *h = check_hash_table (table); | |
5190 | return make_number (HASH_TABLE_SIZE (h)); | |
5191 | } | |
59f953a2 | 5192 | |
d80c6c11 GM |
5193 | |
5194 | DEFUN ("hash-table-test", Fhash_table_test, Shash_table_test, 1, 1, 0, | |
e9d8ddc9 MB |
5195 | doc: /* Return the test TABLE uses. */) |
5196 | (table) | |
47cebab1 | 5197 | Lisp_Object table; |
d80c6c11 GM |
5198 | { |
5199 | return check_hash_table (table)->test; | |
5200 | } | |
5201 | ||
59f953a2 | 5202 | |
e84b1dea GM |
5203 | DEFUN ("hash-table-weakness", Fhash_table_weakness, Shash_table_weakness, |
5204 | 1, 1, 0, | |
e9d8ddc9 MB |
5205 | doc: /* Return the weakness of TABLE. */) |
5206 | (table) | |
47cebab1 | 5207 | Lisp_Object table; |
d80c6c11 GM |
5208 | { |
5209 | return check_hash_table (table)->weak; | |
5210 | } | |
5211 | ||
59f953a2 | 5212 | |
d80c6c11 | 5213 | DEFUN ("hash-table-p", Fhash_table_p, Shash_table_p, 1, 1, 0, |
e9d8ddc9 MB |
5214 | doc: /* Return t if OBJ is a Lisp hash table object. */) |
5215 | (obj) | |
d80c6c11 GM |
5216 | Lisp_Object obj; |
5217 | { | |
5218 | return HASH_TABLE_P (obj) ? Qt : Qnil; | |
5219 | } | |
5220 | ||
5221 | ||
5222 | DEFUN ("clrhash", Fclrhash, Sclrhash, 1, 1, 0, | |
e9d8ddc9 MB |
5223 | doc: /* Clear hash table TABLE. */) |
5224 | (table) | |
d80c6c11 GM |
5225 | Lisp_Object table; |
5226 | { | |
5227 | hash_clear (check_hash_table (table)); | |
5228 | return Qnil; | |
5229 | } | |
5230 | ||
5231 | ||
5232 | DEFUN ("gethash", Fgethash, Sgethash, 2, 3, 0, | |
e9d8ddc9 MB |
5233 | doc: /* Look up KEY in TABLE and return its associated value. |
5234 | If KEY is not found, return DFLT which defaults to nil. */) | |
5235 | (key, table, dflt) | |
68c45bf0 | 5236 | Lisp_Object key, table, dflt; |
d80c6c11 GM |
5237 | { |
5238 | struct Lisp_Hash_Table *h = check_hash_table (table); | |
5239 | int i = hash_lookup (h, key, NULL); | |
5240 | return i >= 0 ? HASH_VALUE (h, i) : dflt; | |
5241 | } | |
5242 | ||
5243 | ||
5244 | DEFUN ("puthash", Fputhash, Sputhash, 3, 3, 0, | |
e9d8ddc9 | 5245 | doc: /* Associate KEY with VALUE in hash table TABLE. |
47cebab1 | 5246 | If KEY is already present in table, replace its current value with |
e9d8ddc9 MB |
5247 | VALUE. */) |
5248 | (key, value, table) | |
1fffe870 | 5249 | Lisp_Object key, value, table; |
d80c6c11 GM |
5250 | { |
5251 | struct Lisp_Hash_Table *h = check_hash_table (table); | |
5252 | int i; | |
5253 | unsigned hash; | |
5254 | ||
5255 | i = hash_lookup (h, key, &hash); | |
5256 | if (i >= 0) | |
5257 | HASH_VALUE (h, i) = value; | |
5258 | else | |
5259 | hash_put (h, key, value, hash); | |
59f953a2 | 5260 | |
d9c4f922 | 5261 | return value; |
d80c6c11 GM |
5262 | } |
5263 | ||
5264 | ||
5265 | DEFUN ("remhash", Fremhash, Sremhash, 2, 2, 0, | |
e9d8ddc9 MB |
5266 | doc: /* Remove KEY from TABLE. */) |
5267 | (key, table) | |
1fffe870 | 5268 | Lisp_Object key, table; |
d80c6c11 GM |
5269 | { |
5270 | struct Lisp_Hash_Table *h = check_hash_table (table); | |
5271 | hash_remove (h, key); | |
5272 | return Qnil; | |
5273 | } | |
5274 | ||
5275 | ||
5276 | DEFUN ("maphash", Fmaphash, Smaphash, 2, 2, 0, | |
e9d8ddc9 MB |
5277 | doc: /* Call FUNCTION for all entries in hash table TABLE. |
5278 | FUNCTION is called with 2 arguments KEY and VALUE. */) | |
5279 | (function, table) | |
d80c6c11 GM |
5280 | Lisp_Object function, table; |
5281 | { | |
5282 | struct Lisp_Hash_Table *h = check_hash_table (table); | |
5283 | Lisp_Object args[3]; | |
5284 | int i; | |
5285 | ||
5286 | for (i = 0; i < HASH_TABLE_SIZE (h); ++i) | |
5287 | if (!NILP (HASH_HASH (h, i))) | |
5288 | { | |
5289 | args[0] = function; | |
5290 | args[1] = HASH_KEY (h, i); | |
5291 | args[2] = HASH_VALUE (h, i); | |
5292 | Ffuncall (3, args); | |
5293 | } | |
59f953a2 | 5294 | |
d80c6c11 GM |
5295 | return Qnil; |
5296 | } | |
5297 | ||
5298 | ||
5299 | DEFUN ("define-hash-table-test", Fdefine_hash_table_test, | |
5300 | Sdefine_hash_table_test, 3, 3, 0, | |
e9d8ddc9 | 5301 | doc: /* Define a new hash table test with name NAME, a symbol. |
91f78c99 | 5302 | |
47cebab1 GM |
5303 | In hash tables created with NAME specified as test, use TEST to |
5304 | compare keys, and HASH for computing hash codes of keys. | |
5305 | ||
5306 | TEST must be a function taking two arguments and returning non-nil if | |
5307 | both arguments are the same. HASH must be a function taking one | |
5308 | argument and return an integer that is the hash code of the argument. | |
5309 | Hash code computation should use the whole value range of integers, | |
e9d8ddc9 MB |
5310 | including negative integers. */) |
5311 | (name, test, hash) | |
d80c6c11 GM |
5312 | Lisp_Object name, test, hash; |
5313 | { | |
5314 | return Fput (name, Qhash_table_test, list2 (test, hash)); | |
5315 | } | |
5316 | ||
a3b210c4 | 5317 | |
57916a7a | 5318 | \f |
5c302da4 GM |
5319 | /************************************************************************ |
5320 | MD5 | |
5321 | ************************************************************************/ | |
5322 | ||
57916a7a | 5323 | #include "md5.h" |
5c302da4 | 5324 | #include "coding.h" |
57916a7a GM |
5325 | |
5326 | DEFUN ("md5", Fmd5, Smd5, 1, 5, 0, | |
e9d8ddc9 | 5327 | doc: /* Return MD5 message digest of OBJECT, a buffer or string. |
91f78c99 | 5328 | |
47cebab1 GM |
5329 | A message digest is a cryptographic checksum of a document, and the |
5330 | algorithm to calculate it is defined in RFC 1321. | |
5331 | ||
5332 | The two optional arguments START and END are character positions | |
5333 | specifying for which part of OBJECT the message digest should be | |
5334 | computed. If nil or omitted, the digest is computed for the whole | |
5335 | OBJECT. | |
5336 | ||
5337 | The MD5 message digest is computed from the result of encoding the | |
5338 | text in a coding system, not directly from the internal Emacs form of | |
5339 | the text. The optional fourth argument CODING-SYSTEM specifies which | |
5340 | coding system to encode the text with. It should be the same coding | |
5341 | system that you used or will use when actually writing the text into a | |
5342 | file. | |
5343 | ||
5344 | If CODING-SYSTEM is nil or omitted, the default depends on OBJECT. If | |
5345 | OBJECT is a buffer, the default for CODING-SYSTEM is whatever coding | |
5346 | system would be chosen by default for writing this text into a file. | |
5347 | ||
5348 | If OBJECT is a string, the most preferred coding system (see the | |
5349 | command `prefer-coding-system') is used. | |
5350 | ||
5351 | If NOERROR is non-nil, silently assume the `raw-text' coding if the | |
e9d8ddc9 MB |
5352 | guesswork fails. Normally, an error is signaled in such case. */) |
5353 | (object, start, end, coding_system, noerror) | |
57916a7a GM |
5354 | Lisp_Object object, start, end, coding_system, noerror; |
5355 | { | |
5356 | unsigned char digest[16]; | |
5357 | unsigned char value[33]; | |
5358 | int i; | |
5359 | int size; | |
5360 | int size_byte = 0; | |
5361 | int start_char = 0, end_char = 0; | |
5362 | int start_byte = 0, end_byte = 0; | |
5363 | register int b, e; | |
5364 | register struct buffer *bp; | |
5365 | int temp; | |
5366 | ||
5c302da4 | 5367 | if (STRINGP (object)) |
57916a7a GM |
5368 | { |
5369 | if (NILP (coding_system)) | |
5370 | { | |
5c302da4 | 5371 | /* Decide the coding-system to encode the data with. */ |
57916a7a | 5372 | |
5c302da4 GM |
5373 | if (STRING_MULTIBYTE (object)) |
5374 | /* use default, we can't guess correct value */ | |
f5c1dd0d | 5375 | coding_system = SYMBOL_VALUE (XCAR (Vcoding_category_list)); |
91f78c99 | 5376 | else |
5c302da4 | 5377 | coding_system = Qraw_text; |
57916a7a | 5378 | } |
91f78c99 | 5379 | |
5c302da4 | 5380 | if (NILP (Fcoding_system_p (coding_system))) |
57916a7a | 5381 | { |
5c302da4 | 5382 | /* Invalid coding system. */ |
91f78c99 | 5383 | |
5c302da4 GM |
5384 | if (!NILP (noerror)) |
5385 | coding_system = Qraw_text; | |
5386 | else | |
5387 | while (1) | |
5388 | Fsignal (Qcoding_system_error, Fcons (coding_system, Qnil)); | |
57916a7a GM |
5389 | } |
5390 | ||
5c302da4 GM |
5391 | if (STRING_MULTIBYTE (object)) |
5392 | object = code_convert_string1 (object, coding_system, Qnil, 1); | |
5393 | ||
d5db4077 KR |
5394 | size = SCHARS (object); |
5395 | size_byte = SBYTES (object); | |
57916a7a GM |
5396 | |
5397 | if (!NILP (start)) | |
5398 | { | |
b7826503 | 5399 | CHECK_NUMBER (start); |
57916a7a GM |
5400 | |
5401 | start_char = XINT (start); | |
5402 | ||
5403 | if (start_char < 0) | |
5404 | start_char += size; | |
5405 | ||
5406 | start_byte = string_char_to_byte (object, start_char); | |
5407 | } | |
5408 | ||
5409 | if (NILP (end)) | |
5410 | { | |
5411 | end_char = size; | |
5412 | end_byte = size_byte; | |
5413 | } | |
5414 | else | |
5415 | { | |
b7826503 | 5416 | CHECK_NUMBER (end); |
91f78c99 | 5417 | |
57916a7a GM |
5418 | end_char = XINT (end); |
5419 | ||
5420 | if (end_char < 0) | |
5421 | end_char += size; | |
91f78c99 | 5422 | |
57916a7a GM |
5423 | end_byte = string_char_to_byte (object, end_char); |
5424 | } | |
91f78c99 | 5425 | |
57916a7a GM |
5426 | if (!(0 <= start_char && start_char <= end_char && end_char <= size)) |
5427 | args_out_of_range_3 (object, make_number (start_char), | |
5428 | make_number (end_char)); | |
5429 | } | |
5430 | else | |
5431 | { | |
b7826503 | 5432 | CHECK_BUFFER (object); |
57916a7a GM |
5433 | |
5434 | bp = XBUFFER (object); | |
91f78c99 | 5435 | |
57916a7a GM |
5436 | if (NILP (start)) |
5437 | b = BUF_BEGV (bp); | |
5438 | else | |
5439 | { | |
b7826503 | 5440 | CHECK_NUMBER_COERCE_MARKER (start); |
57916a7a GM |
5441 | b = XINT (start); |
5442 | } | |
5443 | ||
5444 | if (NILP (end)) | |
5445 | e = BUF_ZV (bp); | |
5446 | else | |
5447 | { | |
b7826503 | 5448 | CHECK_NUMBER_COERCE_MARKER (end); |
57916a7a GM |
5449 | e = XINT (end); |
5450 | } | |
91f78c99 | 5451 | |
57916a7a GM |
5452 | if (b > e) |
5453 | temp = b, b = e, e = temp; | |
91f78c99 | 5454 | |
57916a7a GM |
5455 | if (!(BUF_BEGV (bp) <= b && e <= BUF_ZV (bp))) |
5456 | args_out_of_range (start, end); | |
91f78c99 | 5457 | |
57916a7a GM |
5458 | if (NILP (coding_system)) |
5459 | { | |
91f78c99 | 5460 | /* Decide the coding-system to encode the data with. |
5c302da4 GM |
5461 | See fileio.c:Fwrite-region */ |
5462 | ||
5463 | if (!NILP (Vcoding_system_for_write)) | |
5464 | coding_system = Vcoding_system_for_write; | |
5465 | else | |
5466 | { | |
5467 | int force_raw_text = 0; | |
5468 | ||
5469 | coding_system = XBUFFER (object)->buffer_file_coding_system; | |
5470 | if (NILP (coding_system) | |
5471 | || NILP (Flocal_variable_p (Qbuffer_file_coding_system, Qnil))) | |
5472 | { | |
5473 | coding_system = Qnil; | |
5474 | if (NILP (current_buffer->enable_multibyte_characters)) | |
5475 | force_raw_text = 1; | |
5476 | } | |
5477 | ||
5478 | if (NILP (coding_system) && !NILP (Fbuffer_file_name(object))) | |
5479 | { | |
5480 | /* Check file-coding-system-alist. */ | |
5481 | Lisp_Object args[4], val; | |
91f78c99 | 5482 | |
5c302da4 GM |
5483 | args[0] = Qwrite_region; args[1] = start; args[2] = end; |
5484 | args[3] = Fbuffer_file_name(object); | |
5485 | val = Ffind_operation_coding_system (4, args); | |
5486 | if (CONSP (val) && !NILP (XCDR (val))) | |
5487 | coding_system = XCDR (val); | |
5488 | } | |
5489 | ||
5490 | if (NILP (coding_system) | |
5491 | && !NILP (XBUFFER (object)->buffer_file_coding_system)) | |
5492 | { | |
5493 | /* If we still have not decided a coding system, use the | |
5494 | default value of buffer-file-coding-system. */ | |
5495 | coding_system = XBUFFER (object)->buffer_file_coding_system; | |
5496 | } | |
5497 | ||
5498 | if (!force_raw_text | |
5499 | && !NILP (Ffboundp (Vselect_safe_coding_system_function))) | |
5500 | /* Confirm that VAL can surely encode the current region. */ | |
1e59646d | 5501 | coding_system = call4 (Vselect_safe_coding_system_function, |
70da6a76 | 5502 | make_number (b), make_number (e), |
1e59646d | 5503 | coding_system, Qnil); |
5c302da4 GM |
5504 | |
5505 | if (force_raw_text) | |
5506 | coding_system = Qraw_text; | |
5507 | } | |
5508 | ||
5509 | if (NILP (Fcoding_system_p (coding_system))) | |
57916a7a | 5510 | { |
5c302da4 GM |
5511 | /* Invalid coding system. */ |
5512 | ||
5513 | if (!NILP (noerror)) | |
5514 | coding_system = Qraw_text; | |
5515 | else | |
5516 | while (1) | |
5517 | Fsignal (Qcoding_system_error, Fcons (coding_system, Qnil)); | |
57916a7a GM |
5518 | } |
5519 | } | |
5520 | ||
5521 | object = make_buffer_string (b, e, 0); | |
5522 | ||
5523 | if (STRING_MULTIBYTE (object)) | |
5524 | object = code_convert_string1 (object, coding_system, Qnil, 1); | |
5525 | } | |
5526 | ||
91f78c99 FP |
5527 | md5_buffer (SDATA (object) + start_byte, |
5528 | SBYTES (object) - (size_byte - end_byte), | |
57916a7a GM |
5529 | digest); |
5530 | ||
5531 | for (i = 0; i < 16; i++) | |
5c302da4 | 5532 | sprintf (&value[2 * i], "%02x", digest[i]); |
57916a7a GM |
5533 | value[32] = '\0'; |
5534 | ||
5535 | return make_string (value, 32); | |
5536 | } | |
5537 | ||
24c129e4 | 5538 | \f |
dfcf069d | 5539 | void |
7b863bd5 JB |
5540 | syms_of_fns () |
5541 | { | |
d80c6c11 GM |
5542 | /* Hash table stuff. */ |
5543 | Qhash_table_p = intern ("hash-table-p"); | |
5544 | staticpro (&Qhash_table_p); | |
5545 | Qeq = intern ("eq"); | |
5546 | staticpro (&Qeq); | |
5547 | Qeql = intern ("eql"); | |
5548 | staticpro (&Qeql); | |
5549 | Qequal = intern ("equal"); | |
5550 | staticpro (&Qequal); | |
5551 | QCtest = intern (":test"); | |
5552 | staticpro (&QCtest); | |
5553 | QCsize = intern (":size"); | |
5554 | staticpro (&QCsize); | |
5555 | QCrehash_size = intern (":rehash-size"); | |
5556 | staticpro (&QCrehash_size); | |
5557 | QCrehash_threshold = intern (":rehash-threshold"); | |
5558 | staticpro (&QCrehash_threshold); | |
ee0403b3 GM |
5559 | QCweakness = intern (":weakness"); |
5560 | staticpro (&QCweakness); | |
f899c503 GM |
5561 | Qkey = intern ("key"); |
5562 | staticpro (&Qkey); | |
5563 | Qvalue = intern ("value"); | |
5564 | staticpro (&Qvalue); | |
d80c6c11 GM |
5565 | Qhash_table_test = intern ("hash-table-test"); |
5566 | staticpro (&Qhash_table_test); | |
ec504e6f GM |
5567 | Qkey_or_value = intern ("key-or-value"); |
5568 | staticpro (&Qkey_or_value); | |
5569 | Qkey_and_value = intern ("key-and-value"); | |
5570 | staticpro (&Qkey_and_value); | |
d80c6c11 GM |
5571 | |
5572 | defsubr (&Ssxhash); | |
5573 | defsubr (&Smake_hash_table); | |
f899c503 | 5574 | defsubr (&Scopy_hash_table); |
d80c6c11 GM |
5575 | defsubr (&Shash_table_count); |
5576 | defsubr (&Shash_table_rehash_size); | |
5577 | defsubr (&Shash_table_rehash_threshold); | |
5578 | defsubr (&Shash_table_size); | |
5579 | defsubr (&Shash_table_test); | |
e84b1dea | 5580 | defsubr (&Shash_table_weakness); |
d80c6c11 GM |
5581 | defsubr (&Shash_table_p); |
5582 | defsubr (&Sclrhash); | |
5583 | defsubr (&Sgethash); | |
5584 | defsubr (&Sputhash); | |
5585 | defsubr (&Sremhash); | |
5586 | defsubr (&Smaphash); | |
5587 | defsubr (&Sdefine_hash_table_test); | |
59f953a2 | 5588 | |
7b863bd5 JB |
5589 | Qstring_lessp = intern ("string-lessp"); |
5590 | staticpro (&Qstring_lessp); | |
68732608 RS |
5591 | Qprovide = intern ("provide"); |
5592 | staticpro (&Qprovide); | |
5593 | Qrequire = intern ("require"); | |
5594 | staticpro (&Qrequire); | |
0ce830bc RS |
5595 | Qyes_or_no_p_history = intern ("yes-or-no-p-history"); |
5596 | staticpro (&Qyes_or_no_p_history); | |
eb4ffa4e RS |
5597 | Qcursor_in_echo_area = intern ("cursor-in-echo-area"); |
5598 | staticpro (&Qcursor_in_echo_area); | |
b4f334f7 KH |
5599 | Qwidget_type = intern ("widget-type"); |
5600 | staticpro (&Qwidget_type); | |
7b863bd5 | 5601 | |
09ab3c3b KH |
5602 | staticpro (&string_char_byte_cache_string); |
5603 | string_char_byte_cache_string = Qnil; | |
5604 | ||
1f79789d RS |
5605 | require_nesting_list = Qnil; |
5606 | staticpro (&require_nesting_list); | |
5607 | ||
52a9879b RS |
5608 | Fset (Qyes_or_no_p_history, Qnil); |
5609 | ||
e9d8ddc9 MB |
5610 | DEFVAR_LISP ("features", &Vfeatures, |
5611 | doc: /* A list of symbols which are the features of the executing emacs. | |
47cebab1 | 5612 | Used by `featurep' and `require', and altered by `provide'. */); |
7b863bd5 | 5613 | Vfeatures = Qnil; |
65550192 SM |
5614 | Qsubfeatures = intern ("subfeatures"); |
5615 | staticpro (&Qsubfeatures); | |
7b863bd5 | 5616 | |
dec002ca DL |
5617 | #ifdef HAVE_LANGINFO_CODESET |
5618 | Qcodeset = intern ("codeset"); | |
5619 | staticpro (&Qcodeset); | |
5620 | Qdays = intern ("days"); | |
5621 | staticpro (&Qdays); | |
5622 | Qmonths = intern ("months"); | |
5623 | staticpro (&Qmonths); | |
5624 | Qpaper = intern ("paper"); | |
5625 | staticpro (&Qpaper); | |
5626 | #endif /* HAVE_LANGINFO_CODESET */ | |
5627 | ||
e9d8ddc9 MB |
5628 | DEFVAR_BOOL ("use-dialog-box", &use_dialog_box, |
5629 | doc: /* *Non-nil means mouse commands use dialog boxes to ask questions. | |
436fa78b | 5630 | This applies to `y-or-n-p' and `yes-or-no-p' questions asked by commands |
47cebab1 | 5631 | invoked by mouse clicks and mouse menu items. */); |
bdd8d692 RS |
5632 | use_dialog_box = 1; |
5633 | ||
7b863bd5 JB |
5634 | defsubr (&Sidentity); |
5635 | defsubr (&Srandom); | |
5636 | defsubr (&Slength); | |
5a30fab8 | 5637 | defsubr (&Ssafe_length); |
026f59ce | 5638 | defsubr (&Sstring_bytes); |
7b863bd5 | 5639 | defsubr (&Sstring_equal); |
0e1e9f8d | 5640 | defsubr (&Scompare_strings); |
7b863bd5 JB |
5641 | defsubr (&Sstring_lessp); |
5642 | defsubr (&Sappend); | |
5643 | defsubr (&Sconcat); | |
5644 | defsubr (&Svconcat); | |
5645 | defsubr (&Scopy_sequence); | |
09ab3c3b KH |
5646 | defsubr (&Sstring_make_multibyte); |
5647 | defsubr (&Sstring_make_unibyte); | |
6d475204 RS |
5648 | defsubr (&Sstring_as_multibyte); |
5649 | defsubr (&Sstring_as_unibyte); | |
2df18cdb | 5650 | defsubr (&Sstring_to_multibyte); |
7b863bd5 JB |
5651 | defsubr (&Scopy_alist); |
5652 | defsubr (&Ssubstring); | |
aebf4d42 | 5653 | defsubr (&Ssubstring_no_properties); |
7b863bd5 JB |
5654 | defsubr (&Snthcdr); |
5655 | defsubr (&Snth); | |
5656 | defsubr (&Selt); | |
5657 | defsubr (&Smember); | |
5658 | defsubr (&Smemq); | |
5659 | defsubr (&Sassq); | |
5660 | defsubr (&Sassoc); | |
5661 | defsubr (&Srassq); | |
0fb5a19c | 5662 | defsubr (&Srassoc); |
7b863bd5 | 5663 | defsubr (&Sdelq); |
ca8dd546 | 5664 | defsubr (&Sdelete); |
7b863bd5 JB |
5665 | defsubr (&Snreverse); |
5666 | defsubr (&Sreverse); | |
5667 | defsubr (&Ssort); | |
be9d483d | 5668 | defsubr (&Splist_get); |
7b863bd5 | 5669 | defsubr (&Sget); |
be9d483d | 5670 | defsubr (&Splist_put); |
7b863bd5 | 5671 | defsubr (&Sput); |
aebf4d42 RS |
5672 | defsubr (&Slax_plist_get); |
5673 | defsubr (&Slax_plist_put); | |
7b863bd5 JB |
5674 | defsubr (&Sequal); |
5675 | defsubr (&Sfillarray); | |
85cad579 | 5676 | defsubr (&Sclear_string); |
999de246 | 5677 | defsubr (&Schar_table_subtype); |
e03f7933 RS |
5678 | defsubr (&Schar_table_parent); |
5679 | defsubr (&Sset_char_table_parent); | |
5680 | defsubr (&Schar_table_extra_slot); | |
5681 | defsubr (&Sset_char_table_extra_slot); | |
999de246 | 5682 | defsubr (&Schar_table_range); |
e03f7933 | 5683 | defsubr (&Sset_char_table_range); |
e1335ba2 | 5684 | defsubr (&Sset_char_table_default); |
52ef6c89 | 5685 | defsubr (&Soptimize_char_table); |
e03f7933 | 5686 | defsubr (&Smap_char_table); |
7b863bd5 JB |
5687 | defsubr (&Snconc); |
5688 | defsubr (&Smapcar); | |
5c6740c9 | 5689 | defsubr (&Smapc); |
7b863bd5 JB |
5690 | defsubr (&Smapconcat); |
5691 | defsubr (&Sy_or_n_p); | |
5692 | defsubr (&Syes_or_no_p); | |
5693 | defsubr (&Sload_average); | |
5694 | defsubr (&Sfeaturep); | |
5695 | defsubr (&Srequire); | |
5696 | defsubr (&Sprovide); | |
a5254817 | 5697 | defsubr (&Splist_member); |
b4f334f7 KH |
5698 | defsubr (&Swidget_put); |
5699 | defsubr (&Swidget_get); | |
5700 | defsubr (&Swidget_apply); | |
24c129e4 KH |
5701 | defsubr (&Sbase64_encode_region); |
5702 | defsubr (&Sbase64_decode_region); | |
5703 | defsubr (&Sbase64_encode_string); | |
5704 | defsubr (&Sbase64_decode_string); | |
57916a7a | 5705 | defsubr (&Smd5); |
d68beb2f | 5706 | defsubr (&Slocale_info); |
7b863bd5 | 5707 | } |
d80c6c11 GM |
5708 | |
5709 | ||
5710 | void | |
5711 | init_fns () | |
5712 | { | |
5713 | Vweak_hash_tables = Qnil; | |
5714 | } | |
ab5796a9 MB |
5715 | |
5716 | /* arch-tag: 787f8219-5b74-46bd-8469-7e1cc475fa31 | |
5717 | (do not change this comment) */ |