Commit | Line | Data |
---|---|---|
7b863bd5 | 1 | /* Random utility Lisp functions. |
df6c90d8 | 2 | Copyright (C) 1985, 86, 87, 93, 94, 95, 97, 98, 99, 2000, 2001 |
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 | |
7b863bd5 JB |
29 | /* Note on some machines this defines `vector' as a typedef, |
30 | so make sure we don't use that name in this file. */ | |
31 | #undef vector | |
32 | #define vector ***** | |
33 | ||
7b863bd5 JB |
34 | #include "lisp.h" |
35 | #include "commands.h" | |
a8283a4a | 36 | #include "charset.h" |
7b863bd5 | 37 | |
7b863bd5 | 38 | #include "buffer.h" |
f812877e | 39 | #include "keyboard.h" |
8feddab4 | 40 | #include "keymap.h" |
ac811a55 | 41 | #include "intervals.h" |
2d8e7e1f RS |
42 | #include "frame.h" |
43 | #include "window.h" | |
91b11d9d | 44 | #include "blockinput.h" |
d73c6532 | 45 | #if defined (HAVE_MENUS) && defined (HAVE_X_WINDOWS) |
dfcf069d AS |
46 | #include "xterm.h" |
47 | #endif | |
7b863bd5 | 48 | |
bc937db7 KH |
49 | #ifndef NULL |
50 | #define NULL (void *)0 | |
51 | #endif | |
52 | ||
bdd8d692 RS |
53 | /* Nonzero enables use of dialog boxes for questions |
54 | asked by mouse commands. */ | |
55 | int use_dialog_box; | |
56 | ||
2d8e7e1f RS |
57 | extern int minibuffer_auto_raise; |
58 | extern Lisp_Object minibuf_window; | |
59 | ||
68732608 | 60 | Lisp_Object Qstring_lessp, Qprovide, Qrequire; |
0ce830bc | 61 | Lisp_Object Qyes_or_no_p_history; |
eb4ffa4e | 62 | Lisp_Object Qcursor_in_echo_area; |
b4f334f7 | 63 | Lisp_Object Qwidget_type; |
7b863bd5 | 64 | |
3844ee44 RS |
65 | extern Lisp_Object Qinput_method_function; |
66 | ||
6cb9cafb | 67 | static int internal_equal (); |
49bdcd3e RS |
68 | |
69 | extern long get_random (); | |
70 | extern void seed_random (); | |
71 | ||
72 | #ifndef HAVE_UNISTD_H | |
73 | extern long time (); | |
74 | #endif | |
e0f5cf5a | 75 | \f |
7b863bd5 | 76 | DEFUN ("identity", Fidentity, Sidentity, 1, 1, 0, |
ddb67bdc | 77 | doc: /* Return the argument unchanged. */) |
e9d8ddc9 | 78 | (arg) |
7b863bd5 JB |
79 | Lisp_Object arg; |
80 | { | |
81 | return arg; | |
82 | } | |
83 | ||
84 | DEFUN ("random", Frandom, Srandom, 0, 1, 0, | |
e9d8ddc9 | 85 | doc: /* Return a pseudo-random number. |
47cebab1 GM |
86 | All integers representable in Lisp are equally likely. |
87 | On most systems, this is 28 bits' worth. | |
88 | With positive integer argument N, return random number in interval [0,N). | |
e9d8ddc9 MB |
89 | With argument t, set the random number seed from the current time and pid. */) |
90 | (n) | |
88fe8140 | 91 | Lisp_Object n; |
7b863bd5 | 92 | { |
e2d6972a KH |
93 | EMACS_INT val; |
94 | Lisp_Object lispy_val; | |
78217ef1 | 95 | unsigned long denominator; |
7b863bd5 | 96 | |
88fe8140 | 97 | if (EQ (n, Qt)) |
e2d6972a | 98 | seed_random (getpid () + time (NULL)); |
88fe8140 | 99 | if (NATNUMP (n) && XFASTINT (n) != 0) |
7b863bd5 | 100 | { |
4cab5074 KH |
101 | /* Try to take our random number from the higher bits of VAL, |
102 | not the lower, since (says Gentzel) the low bits of `random' | |
103 | are less random than the higher ones. We do this by using the | |
104 | quotient rather than the remainder. At the high end of the RNG | |
88fe8140 | 105 | it's possible to get a quotient larger than n; discarding |
4cab5074 | 106 | these values eliminates the bias that would otherwise appear |
88fe8140 EN |
107 | when using a large n. */ |
108 | denominator = ((unsigned long)1 << VALBITS) / XFASTINT (n); | |
4cab5074 | 109 | do |
99175c23 | 110 | val = get_random () / denominator; |
88fe8140 | 111 | while (val >= XFASTINT (n)); |
7b863bd5 | 112 | } |
78217ef1 | 113 | else |
99175c23 | 114 | val = get_random (); |
e2d6972a KH |
115 | XSETINT (lispy_val, val); |
116 | return lispy_val; | |
7b863bd5 JB |
117 | } |
118 | \f | |
119 | /* Random data-structure functions */ | |
120 | ||
121 | DEFUN ("length", Flength, Slength, 1, 1, 0, | |
e9d8ddc9 | 122 | doc: /* Return the length of vector, list or string SEQUENCE. |
47cebab1 GM |
123 | A byte-code function object is also allowed. |
124 | If the string contains multibyte characters, this is not the necessarily | |
125 | the number of bytes in the string; it is the number of characters. | |
e9d8ddc9 MB |
126 | To get the number of bytes, use `string-bytes'. */) |
127 | (sequence) | |
88fe8140 | 128 | register Lisp_Object sequence; |
7b863bd5 | 129 | { |
504f24f1 | 130 | register Lisp_Object val; |
7b863bd5 JB |
131 | register int i; |
132 | ||
133 | retry: | |
88fe8140 EN |
134 | if (STRINGP (sequence)) |
135 | XSETFASTINT (val, XSTRING (sequence)->size); | |
136 | else if (VECTORP (sequence)) | |
137 | XSETFASTINT (val, XVECTOR (sequence)->size); | |
138 | else if (CHAR_TABLE_P (sequence)) | |
64a5094a | 139 | XSETFASTINT (val, MAX_CHAR); |
88fe8140 EN |
140 | else if (BOOL_VECTOR_P (sequence)) |
141 | XSETFASTINT (val, XBOOL_VECTOR (sequence)->size); | |
142 | else if (COMPILEDP (sequence)) | |
143 | XSETFASTINT (val, XVECTOR (sequence)->size & PSEUDOVECTOR_SIZE_MASK); | |
144 | else if (CONSP (sequence)) | |
7b863bd5 | 145 | { |
7843e09c GM |
146 | i = 0; |
147 | while (CONSP (sequence)) | |
7b863bd5 | 148 | { |
f2be3671 | 149 | sequence = XCDR (sequence); |
7843e09c GM |
150 | ++i; |
151 | ||
152 | if (!CONSP (sequence)) | |
153 | break; | |
154 | ||
155 | sequence = XCDR (sequence); | |
156 | ++i; | |
157 | QUIT; | |
7b863bd5 JB |
158 | } |
159 | ||
f2be3671 GM |
160 | if (!NILP (sequence)) |
161 | wrong_type_argument (Qlistp, sequence); | |
162 | ||
163 | val = make_number (i); | |
7b863bd5 | 164 | } |
88fe8140 | 165 | else if (NILP (sequence)) |
a2ad3e19 | 166 | XSETFASTINT (val, 0); |
7b863bd5 JB |
167 | else |
168 | { | |
88fe8140 | 169 | sequence = wrong_type_argument (Qsequencep, sequence); |
7b863bd5 JB |
170 | goto retry; |
171 | } | |
a2ad3e19 | 172 | return val; |
7b863bd5 JB |
173 | } |
174 | ||
5a30fab8 RS |
175 | /* This does not check for quits. That is safe |
176 | since it must terminate. */ | |
177 | ||
178 | DEFUN ("safe-length", Fsafe_length, Ssafe_length, 1, 1, 0, | |
e9d8ddc9 | 179 | doc: /* Return the length of a list, but avoid error or infinite loop. |
47cebab1 GM |
180 | This function never gets an error. If LIST is not really a list, |
181 | it returns 0. If LIST is circular, it returns a finite value | |
e9d8ddc9 MB |
182 | which is at least the number of distinct elements. */) |
183 | (list) | |
5a30fab8 RS |
184 | Lisp_Object list; |
185 | { | |
186 | Lisp_Object tail, halftail, length; | |
187 | int len = 0; | |
188 | ||
189 | /* halftail is used to detect circular lists. */ | |
190 | halftail = list; | |
70949dac | 191 | for (tail = list; CONSP (tail); tail = XCDR (tail)) |
5a30fab8 RS |
192 | { |
193 | if (EQ (tail, halftail) && len != 0) | |
cb3d1a0a | 194 | break; |
5a30fab8 | 195 | len++; |
3a61aeb4 | 196 | if ((len & 1) == 0) |
70949dac | 197 | halftail = XCDR (halftail); |
5a30fab8 RS |
198 | } |
199 | ||
200 | XSETINT (length, len); | |
201 | return length; | |
202 | } | |
203 | ||
47cebab1 | 204 | DEFUN ("string-bytes", Fstring_bytes, Sstring_bytes, 1, 1, 0, |
e9d8ddc9 MB |
205 | doc: /* Return the number of bytes in STRING. |
206 | If STRING is a multibyte string, this is greater than the length of STRING. */) | |
207 | (string) | |
eaf17c6b | 208 | Lisp_Object string; |
026f59ce | 209 | { |
b7826503 | 210 | CHECK_STRING (string); |
fc932ac6 | 211 | return make_number (STRING_BYTES (XSTRING (string))); |
026f59ce RS |
212 | } |
213 | ||
7b863bd5 | 214 | DEFUN ("string-equal", Fstring_equal, Sstring_equal, 2, 2, 0, |
e9d8ddc9 | 215 | doc: /* Return t if two strings have identical contents. |
47cebab1 | 216 | Case is significant, but text properties are ignored. |
e9d8ddc9 MB |
217 | Symbols are also allowed; their print names are used instead. */) |
218 | (s1, s2) | |
7b863bd5 JB |
219 | register Lisp_Object s1, s2; |
220 | { | |
7650760e | 221 | if (SYMBOLP (s1)) |
c06583e1 | 222 | s1 = SYMBOL_NAME (s1); |
7650760e | 223 | if (SYMBOLP (s2)) |
c06583e1 | 224 | s2 = SYMBOL_NAME (s2); |
b7826503 PJ |
225 | CHECK_STRING (s1); |
226 | CHECK_STRING (s2); | |
7b863bd5 | 227 | |
ea35ce3d | 228 | if (XSTRING (s1)->size != XSTRING (s2)->size |
fc932ac6 RS |
229 | || STRING_BYTES (XSTRING (s1)) != STRING_BYTES (XSTRING (s2)) |
230 | || bcmp (XSTRING (s1)->data, XSTRING (s2)->data, STRING_BYTES (XSTRING (s1)))) | |
7b863bd5 JB |
231 | return Qnil; |
232 | return Qt; | |
233 | } | |
234 | ||
0e1e9f8d | 235 | DEFUN ("compare-strings", Fcompare_strings, |
f95837d0 | 236 | Scompare_strings, 6, 7, 0, |
e9d8ddc9 | 237 | doc: /* Compare the contents of two strings, converting to multibyte if needed. |
47cebab1 GM |
238 | In string STR1, skip the first START1 characters and stop at END1. |
239 | In string STR2, skip the first START2 characters and stop at END2. | |
240 | END1 and END2 default to the full lengths of the respective strings. | |
241 | ||
242 | Case is significant in this comparison if IGNORE-CASE is nil. | |
243 | Unibyte strings are converted to multibyte for comparison. | |
244 | ||
245 | The value is t if the strings (or specified portions) match. | |
246 | If string STR1 is less, the value is a negative number N; | |
247 | - 1 - N is the number of characters that match at the beginning. | |
248 | If string STR1 is greater, the value is a positive number N; | |
e9d8ddc9 MB |
249 | N - 1 is the number of characters that match at the beginning. */) |
250 | (str1, start1, end1, str2, start2, end2, ignore_case) | |
0e1e9f8d RS |
251 | Lisp_Object str1, start1, end1, start2, str2, end2, ignore_case; |
252 | { | |
253 | register int end1_char, end2_char; | |
254 | register int i1, i1_byte, i2, i2_byte; | |
255 | ||
b7826503 PJ |
256 | CHECK_STRING (str1); |
257 | CHECK_STRING (str2); | |
0e1e9f8d RS |
258 | if (NILP (start1)) |
259 | start1 = make_number (0); | |
260 | if (NILP (start2)) | |
261 | start2 = make_number (0); | |
b7826503 PJ |
262 | CHECK_NATNUM (start1); |
263 | CHECK_NATNUM (start2); | |
0e1e9f8d | 264 | if (! NILP (end1)) |
b7826503 | 265 | CHECK_NATNUM (end1); |
0e1e9f8d | 266 | if (! NILP (end2)) |
b7826503 | 267 | CHECK_NATNUM (end2); |
0e1e9f8d RS |
268 | |
269 | i1 = XINT (start1); | |
270 | i2 = XINT (start2); | |
271 | ||
272 | i1_byte = string_char_to_byte (str1, i1); | |
273 | i2_byte = string_char_to_byte (str2, i2); | |
274 | ||
275 | end1_char = XSTRING (str1)->size; | |
276 | if (! NILP (end1) && end1_char > XINT (end1)) | |
277 | end1_char = XINT (end1); | |
278 | ||
279 | end2_char = XSTRING (str2)->size; | |
280 | if (! NILP (end2) && end2_char > XINT (end2)) | |
281 | end2_char = XINT (end2); | |
282 | ||
283 | while (i1 < end1_char && i2 < end2_char) | |
284 | { | |
285 | /* When we find a mismatch, we must compare the | |
286 | characters, not just the bytes. */ | |
287 | int c1, c2; | |
288 | ||
289 | if (STRING_MULTIBYTE (str1)) | |
2efdd1b9 | 290 | FETCH_STRING_CHAR_ADVANCE_NO_CHECK (c1, str1, i1, i1_byte); |
0e1e9f8d RS |
291 | else |
292 | { | |
293 | c1 = XSTRING (str1)->data[i1++]; | |
294 | c1 = unibyte_char_to_multibyte (c1); | |
295 | } | |
296 | ||
297 | if (STRING_MULTIBYTE (str2)) | |
2efdd1b9 | 298 | FETCH_STRING_CHAR_ADVANCE_NO_CHECK (c2, str2, i2, i2_byte); |
0e1e9f8d RS |
299 | else |
300 | { | |
301 | c2 = XSTRING (str2)->data[i2++]; | |
302 | c2 = unibyte_char_to_multibyte (c2); | |
303 | } | |
304 | ||
305 | if (c1 == c2) | |
306 | continue; | |
307 | ||
308 | if (! NILP (ignore_case)) | |
309 | { | |
310 | Lisp_Object tem; | |
311 | ||
312 | tem = Fupcase (make_number (c1)); | |
313 | c1 = XINT (tem); | |
314 | tem = Fupcase (make_number (c2)); | |
315 | c2 = XINT (tem); | |
316 | } | |
317 | ||
318 | if (c1 == c2) | |
319 | continue; | |
320 | ||
321 | /* Note that I1 has already been incremented | |
322 | past the character that we are comparing; | |
323 | hence we don't add or subtract 1 here. */ | |
324 | if (c1 < c2) | |
60f8d735 | 325 | return make_number (- i1 + XINT (start1)); |
0e1e9f8d | 326 | else |
60f8d735 | 327 | return make_number (i1 - XINT (start1)); |
0e1e9f8d RS |
328 | } |
329 | ||
330 | if (i1 < end1_char) | |
331 | return make_number (i1 - XINT (start1) + 1); | |
332 | if (i2 < end2_char) | |
333 | return make_number (- i1 + XINT (start1) - 1); | |
334 | ||
335 | return Qt; | |
336 | } | |
337 | ||
7b863bd5 | 338 | DEFUN ("string-lessp", Fstring_lessp, Sstring_lessp, 2, 2, 0, |
e9d8ddc9 | 339 | doc: /* Return t if first arg string is less than second in lexicographic order. |
47cebab1 | 340 | Case is significant. |
e9d8ddc9 MB |
341 | Symbols are also allowed; their print names are used instead. */) |
342 | (s1, s2) | |
7b863bd5 JB |
343 | register Lisp_Object s1, s2; |
344 | { | |
7b863bd5 | 345 | register int end; |
09ab3c3b | 346 | register int i1, i1_byte, i2, i2_byte; |
7b863bd5 | 347 | |
7650760e | 348 | if (SYMBOLP (s1)) |
c06583e1 | 349 | s1 = SYMBOL_NAME (s1); |
7650760e | 350 | if (SYMBOLP (s2)) |
c06583e1 | 351 | s2 = SYMBOL_NAME (s2); |
b7826503 PJ |
352 | CHECK_STRING (s1); |
353 | CHECK_STRING (s2); | |
7b863bd5 | 354 | |
09ab3c3b KH |
355 | i1 = i1_byte = i2 = i2_byte = 0; |
356 | ||
357 | end = XSTRING (s1)->size; | |
358 | if (end > XSTRING (s2)->size) | |
359 | end = XSTRING (s2)->size; | |
7b863bd5 | 360 | |
09ab3c3b | 361 | while (i1 < end) |
7b863bd5 | 362 | { |
09ab3c3b KH |
363 | /* When we find a mismatch, we must compare the |
364 | characters, not just the bytes. */ | |
365 | int c1, c2; | |
366 | ||
2efdd1b9 KH |
367 | FETCH_STRING_CHAR_ADVANCE (c1, s1, i1, i1_byte); |
368 | FETCH_STRING_CHAR_ADVANCE (c2, s2, i2, i2_byte); | |
09ab3c3b KH |
369 | |
370 | if (c1 != c2) | |
371 | return c1 < c2 ? Qt : Qnil; | |
7b863bd5 | 372 | } |
09ab3c3b | 373 | return i1 < XSTRING (s2)->size ? Qt : Qnil; |
7b863bd5 JB |
374 | } |
375 | \f | |
376 | static Lisp_Object concat (); | |
377 | ||
378 | /* ARGSUSED */ | |
379 | Lisp_Object | |
380 | concat2 (s1, s2) | |
381 | Lisp_Object s1, s2; | |
382 | { | |
383 | #ifdef NO_ARG_ARRAY | |
384 | Lisp_Object args[2]; | |
385 | args[0] = s1; | |
386 | args[1] = s2; | |
387 | return concat (2, args, Lisp_String, 0); | |
388 | #else | |
389 | return concat (2, &s1, Lisp_String, 0); | |
390 | #endif /* NO_ARG_ARRAY */ | |
391 | } | |
392 | ||
d4af3687 RS |
393 | /* ARGSUSED */ |
394 | Lisp_Object | |
395 | concat3 (s1, s2, s3) | |
396 | Lisp_Object s1, s2, s3; | |
397 | { | |
398 | #ifdef NO_ARG_ARRAY | |
399 | Lisp_Object args[3]; | |
400 | args[0] = s1; | |
401 | args[1] = s2; | |
402 | args[2] = s3; | |
403 | return concat (3, args, Lisp_String, 0); | |
404 | #else | |
405 | return concat (3, &s1, Lisp_String, 0); | |
406 | #endif /* NO_ARG_ARRAY */ | |
407 | } | |
408 | ||
7b863bd5 | 409 | DEFUN ("append", Fappend, Sappend, 0, MANY, 0, |
e9d8ddc9 | 410 | doc: /* Concatenate all the arguments and make the result a list. |
47cebab1 GM |
411 | The result is a list whose elements are the elements of all the arguments. |
412 | Each argument may be a list, vector or string. | |
4bf8e2a3 MB |
413 | The last argument is not copied, just used as the tail of the new list. |
414 | usage: (append &rest SEQUENCES) */) | |
e9d8ddc9 | 415 | (nargs, args) |
7b863bd5 JB |
416 | int nargs; |
417 | Lisp_Object *args; | |
418 | { | |
419 | return concat (nargs, args, Lisp_Cons, 1); | |
420 | } | |
421 | ||
422 | DEFUN ("concat", Fconcat, Sconcat, 0, MANY, 0, | |
e9d8ddc9 | 423 | doc: /* Concatenate all the arguments and make the result a string. |
47cebab1 | 424 | The result is a string whose elements are the elements of all the arguments. |
4bf8e2a3 MB |
425 | Each argument may be a string or a list or vector of characters (integers). |
426 | usage: (concat &rest SEQUENCES) */) | |
e9d8ddc9 | 427 | (nargs, args) |
7b863bd5 JB |
428 | int nargs; |
429 | Lisp_Object *args; | |
430 | { | |
431 | return concat (nargs, args, Lisp_String, 0); | |
432 | } | |
433 | ||
434 | DEFUN ("vconcat", Fvconcat, Svconcat, 0, MANY, 0, | |
e9d8ddc9 | 435 | doc: /* Concatenate all the arguments and make the result a vector. |
47cebab1 | 436 | The result is a vector whose elements are the elements of all the arguments. |
4bf8e2a3 MB |
437 | Each argument may be a list, vector or string. |
438 | usage: (vconcat &rest SEQUENCES) */) | |
e9d8ddc9 | 439 | (nargs, args) |
7b863bd5 JB |
440 | int nargs; |
441 | Lisp_Object *args; | |
442 | { | |
3e7383eb | 443 | return concat (nargs, args, Lisp_Vectorlike, 0); |
7b863bd5 JB |
444 | } |
445 | ||
3720677d KH |
446 | /* Retrun a copy of a sub char table ARG. The elements except for a |
447 | nested sub char table are not copied. */ | |
448 | static Lisp_Object | |
449 | copy_sub_char_table (arg) | |
e1335ba2 | 450 | Lisp_Object arg; |
3720677d KH |
451 | { |
452 | Lisp_Object copy = make_sub_char_table (XCHAR_TABLE (arg)->defalt); | |
453 | int i; | |
454 | ||
455 | /* Copy all the contents. */ | |
456 | bcopy (XCHAR_TABLE (arg)->contents, XCHAR_TABLE (copy)->contents, | |
457 | SUB_CHAR_TABLE_ORDINARY_SLOTS * sizeof (Lisp_Object)); | |
458 | /* Recursively copy any sub char-tables in the ordinary slots. */ | |
459 | for (i = 32; i < SUB_CHAR_TABLE_ORDINARY_SLOTS; i++) | |
460 | if (SUB_CHAR_TABLE_P (XCHAR_TABLE (arg)->contents[i])) | |
461 | XCHAR_TABLE (copy)->contents[i] | |
462 | = copy_sub_char_table (XCHAR_TABLE (copy)->contents[i]); | |
463 | ||
464 | return copy; | |
465 | } | |
466 | ||
467 | ||
7b863bd5 | 468 | DEFUN ("copy-sequence", Fcopy_sequence, Scopy_sequence, 1, 1, 0, |
e9d8ddc9 | 469 | doc: /* Return a copy of a list, vector or string. |
47cebab1 | 470 | The elements of a list or vector are not copied; they are shared |
e9d8ddc9 MB |
471 | with the original. */) |
472 | (arg) | |
7b863bd5 JB |
473 | Lisp_Object arg; |
474 | { | |
265a9e55 | 475 | if (NILP (arg)) return arg; |
e03f7933 RS |
476 | |
477 | if (CHAR_TABLE_P (arg)) | |
478 | { | |
25c30748 | 479 | int i; |
e03f7933 RS |
480 | Lisp_Object copy; |
481 | ||
c8640abf | 482 | copy = Fmake_char_table (XCHAR_TABLE (arg)->purpose, Qnil); |
e03f7933 | 483 | /* Copy all the slots, including the extra ones. */ |
69b3a14b | 484 | bcopy (XVECTOR (arg)->contents, XVECTOR (copy)->contents, |
25c30748 KH |
485 | ((XCHAR_TABLE (arg)->size & PSEUDOVECTOR_SIZE_MASK) |
486 | * sizeof (Lisp_Object))); | |
e03f7933 | 487 | |
3720677d KH |
488 | /* Recursively copy any sub char tables in the ordinary slots |
489 | for multibyte characters. */ | |
490 | for (i = CHAR_TABLE_SINGLE_BYTE_SLOTS; | |
491 | i < CHAR_TABLE_ORDINARY_SLOTS; i++) | |
492 | if (SUB_CHAR_TABLE_P (XCHAR_TABLE (arg)->contents[i])) | |
e03f7933 | 493 | XCHAR_TABLE (copy)->contents[i] |
3720677d | 494 | = copy_sub_char_table (XCHAR_TABLE (copy)->contents[i]); |
e03f7933 RS |
495 | |
496 | return copy; | |
497 | } | |
498 | ||
499 | if (BOOL_VECTOR_P (arg)) | |
500 | { | |
501 | Lisp_Object val; | |
e03f7933 | 502 | int size_in_chars |
e22e4283 | 503 | = (XBOOL_VECTOR (arg)->size + BITS_PER_CHAR - 1) / BITS_PER_CHAR; |
e03f7933 RS |
504 | |
505 | val = Fmake_bool_vector (Flength (arg), Qnil); | |
506 | bcopy (XBOOL_VECTOR (arg)->data, XBOOL_VECTOR (val)->data, | |
507 | size_in_chars); | |
508 | return val; | |
509 | } | |
510 | ||
7650760e | 511 | if (!CONSP (arg) && !VECTORP (arg) && !STRINGP (arg)) |
7b863bd5 JB |
512 | arg = wrong_type_argument (Qsequencep, arg); |
513 | return concat (1, &arg, CONSP (arg) ? Lisp_Cons : XTYPE (arg), 0); | |
514 | } | |
515 | ||
2d6115c8 KH |
516 | /* In string STR of length LEN, see if bytes before STR[I] combine |
517 | with bytes after STR[I] to form a single character. If so, return | |
518 | the number of bytes after STR[I] which combine in this way. | |
519 | Otherwize, return 0. */ | |
520 | ||
521 | static int | |
522 | count_combining (str, len, i) | |
523 | unsigned char *str; | |
524 | int len, i; | |
525 | { | |
e50d9192 | 526 | int j = i - 1, bytes; |
2d6115c8 KH |
527 | |
528 | if (i == 0 || i == len || CHAR_HEAD_P (str[i])) | |
529 | return 0; | |
530 | while (j >= 0 && !CHAR_HEAD_P (str[j])) j--; | |
531 | if (j < 0 || ! BASE_LEADING_CODE_P (str[j])) | |
532 | return 0; | |
e50d9192 KH |
533 | PARSE_MULTIBYTE_SEQ (str + j, len - j, bytes); |
534 | return (bytes <= i - j ? 0 : bytes - (i - j)); | |
2d6115c8 KH |
535 | } |
536 | ||
537 | /* This structure holds information of an argument of `concat' that is | |
538 | a string and has text properties to be copied. */ | |
87f0532f | 539 | struct textprop_rec |
2d6115c8 KH |
540 | { |
541 | int argnum; /* refer to ARGS (arguments of `concat') */ | |
542 | int from; /* refer to ARGS[argnum] (argument string) */ | |
543 | int to; /* refer to VAL (the target string) */ | |
544 | }; | |
545 | ||
7b863bd5 JB |
546 | static Lisp_Object |
547 | concat (nargs, args, target_type, last_special) | |
548 | int nargs; | |
549 | Lisp_Object *args; | |
550 | enum Lisp_Type target_type; | |
551 | int last_special; | |
552 | { | |
553 | Lisp_Object val; | |
7b863bd5 JB |
554 | register Lisp_Object tail; |
555 | register Lisp_Object this; | |
556 | int toindex; | |
093386ca | 557 | int toindex_byte = 0; |
ea35ce3d RS |
558 | register int result_len; |
559 | register int result_len_byte; | |
7b863bd5 JB |
560 | register int argnum; |
561 | Lisp_Object last_tail; | |
562 | Lisp_Object prev; | |
ea35ce3d | 563 | int some_multibyte; |
2d6115c8 KH |
564 | /* When we make a multibyte string, we can't copy text properties |
565 | while concatinating each string because the length of resulting | |
566 | string can't be decided until we finish the whole concatination. | |
567 | So, we record strings that have text properties to be copied | |
568 | here, and copy the text properties after the concatination. */ | |
093386ca | 569 | struct textprop_rec *textprops = NULL; |
87f0532f KH |
570 | /* Number of elments in textprops. */ |
571 | int num_textprops = 0; | |
7b863bd5 | 572 | |
093386ca GM |
573 | tail = Qnil; |
574 | ||
7b863bd5 JB |
575 | /* In append, the last arg isn't treated like the others */ |
576 | if (last_special && nargs > 0) | |
577 | { | |
578 | nargs--; | |
579 | last_tail = args[nargs]; | |
580 | } | |
581 | else | |
582 | last_tail = Qnil; | |
583 | ||
ea35ce3d | 584 | /* Canonicalize each argument. */ |
7b863bd5 JB |
585 | for (argnum = 0; argnum < nargs; argnum++) |
586 | { | |
587 | this = args[argnum]; | |
7650760e | 588 | if (!(CONSP (this) || NILP (this) || VECTORP (this) || STRINGP (this) |
e03f7933 | 589 | || COMPILEDP (this) || BOOL_VECTOR_P (this))) |
7b863bd5 | 590 | { |
7b863bd5 JB |
591 | args[argnum] = wrong_type_argument (Qsequencep, this); |
592 | } | |
593 | } | |
594 | ||
ea35ce3d RS |
595 | /* Compute total length in chars of arguments in RESULT_LEN. |
596 | If desired output is a string, also compute length in bytes | |
597 | in RESULT_LEN_BYTE, and determine in SOME_MULTIBYTE | |
598 | whether the result should be a multibyte string. */ | |
599 | result_len_byte = 0; | |
600 | result_len = 0; | |
601 | some_multibyte = 0; | |
602 | for (argnum = 0; argnum < nargs; argnum++) | |
7b863bd5 | 603 | { |
ea35ce3d | 604 | int len; |
7b863bd5 | 605 | this = args[argnum]; |
ea35ce3d RS |
606 | len = XFASTINT (Flength (this)); |
607 | if (target_type == Lisp_String) | |
5b6dddaa | 608 | { |
09ab3c3b KH |
609 | /* We must count the number of bytes needed in the string |
610 | as well as the number of characters. */ | |
5b6dddaa KH |
611 | int i; |
612 | Lisp_Object ch; | |
ea35ce3d | 613 | int this_len_byte; |
5b6dddaa | 614 | |
dec58e65 | 615 | if (VECTORP (this)) |
ea35ce3d | 616 | for (i = 0; i < len; i++) |
dec58e65 KH |
617 | { |
618 | ch = XVECTOR (this)->contents[i]; | |
619 | if (! INTEGERP (ch)) | |
620 | wrong_type_argument (Qintegerp, ch); | |
cc531c44 | 621 | this_len_byte = CHAR_BYTES (XINT (ch)); |
ea35ce3d | 622 | result_len_byte += this_len_byte; |
2efdd1b9 | 623 | if (!SINGLE_BYTE_CHAR_P (XINT (ch))) |
ea35ce3d | 624 | some_multibyte = 1; |
dec58e65 | 625 | } |
6d475204 RS |
626 | else if (BOOL_VECTOR_P (this) && XBOOL_VECTOR (this)->size > 0) |
627 | wrong_type_argument (Qintegerp, Faref (this, make_number (0))); | |
ea35ce3d | 628 | else if (CONSP (this)) |
70949dac | 629 | for (; CONSP (this); this = XCDR (this)) |
dec58e65 | 630 | { |
70949dac | 631 | ch = XCAR (this); |
dec58e65 KH |
632 | if (! INTEGERP (ch)) |
633 | wrong_type_argument (Qintegerp, ch); | |
cc531c44 | 634 | this_len_byte = CHAR_BYTES (XINT (ch)); |
ea35ce3d | 635 | result_len_byte += this_len_byte; |
2efdd1b9 | 636 | if (!SINGLE_BYTE_CHAR_P (XINT (ch))) |
ea35ce3d | 637 | some_multibyte = 1; |
dec58e65 | 638 | } |
470730a8 | 639 | else if (STRINGP (this)) |
ea35ce3d | 640 | { |
06f57aa7 | 641 | if (STRING_MULTIBYTE (this)) |
09ab3c3b KH |
642 | { |
643 | some_multibyte = 1; | |
fc932ac6 | 644 | result_len_byte += STRING_BYTES (XSTRING (this)); |
09ab3c3b KH |
645 | } |
646 | else | |
647 | result_len_byte += count_size_as_multibyte (XSTRING (this)->data, | |
648 | XSTRING (this)->size); | |
ea35ce3d | 649 | } |
5b6dddaa | 650 | } |
ea35ce3d RS |
651 | |
652 | result_len += len; | |
7b863bd5 JB |
653 | } |
654 | ||
09ab3c3b KH |
655 | if (! some_multibyte) |
656 | result_len_byte = result_len; | |
7b863bd5 | 657 | |
ea35ce3d | 658 | /* Create the output object. */ |
7b863bd5 | 659 | if (target_type == Lisp_Cons) |
ea35ce3d | 660 | val = Fmake_list (make_number (result_len), Qnil); |
3e7383eb | 661 | else if (target_type == Lisp_Vectorlike) |
ea35ce3d | 662 | val = Fmake_vector (make_number (result_len), Qnil); |
b10b2daa | 663 | else if (some_multibyte) |
ea35ce3d | 664 | val = make_uninit_multibyte_string (result_len, result_len_byte); |
b10b2daa RS |
665 | else |
666 | val = make_uninit_string (result_len); | |
7b863bd5 | 667 | |
09ab3c3b KH |
668 | /* In `append', if all but last arg are nil, return last arg. */ |
669 | if (target_type == Lisp_Cons && EQ (val, Qnil)) | |
670 | return last_tail; | |
7b863bd5 | 671 | |
ea35ce3d | 672 | /* Copy the contents of the args into the result. */ |
7b863bd5 | 673 | if (CONSP (val)) |
2d6115c8 | 674 | tail = val, toindex = -1; /* -1 in toindex is flag we are making a list */ |
7b863bd5 | 675 | else |
ea35ce3d | 676 | toindex = 0, toindex_byte = 0; |
7b863bd5 JB |
677 | |
678 | prev = Qnil; | |
2d6115c8 | 679 | if (STRINGP (val)) |
87f0532f KH |
680 | textprops |
681 | = (struct textprop_rec *) alloca (sizeof (struct textprop_rec) * nargs); | |
7b863bd5 JB |
682 | |
683 | for (argnum = 0; argnum < nargs; argnum++) | |
684 | { | |
685 | Lisp_Object thislen; | |
093386ca | 686 | int thisleni = 0; |
de712da3 | 687 | register unsigned int thisindex = 0; |
ea35ce3d | 688 | register unsigned int thisindex_byte = 0; |
7b863bd5 JB |
689 | |
690 | this = args[argnum]; | |
691 | if (!CONSP (this)) | |
692 | thislen = Flength (this), thisleni = XINT (thislen); | |
693 | ||
ea35ce3d RS |
694 | /* Between strings of the same kind, copy fast. */ |
695 | if (STRINGP (this) && STRINGP (val) | |
696 | && STRING_MULTIBYTE (this) == some_multibyte) | |
7b863bd5 | 697 | { |
fc932ac6 | 698 | int thislen_byte = STRING_BYTES (XSTRING (this)); |
2d6115c8 KH |
699 | int combined; |
700 | ||
ea35ce3d | 701 | bcopy (XSTRING (this)->data, XSTRING (val)->data + toindex_byte, |
fc932ac6 | 702 | STRING_BYTES (XSTRING (this))); |
2d6115c8 KH |
703 | combined = (some_multibyte && toindex_byte > 0 |
704 | ? count_combining (XSTRING (val)->data, | |
705 | toindex_byte + thislen_byte, | |
706 | toindex_byte) | |
707 | : 0); | |
708 | if (! NULL_INTERVAL_P (XSTRING (this)->intervals)) | |
709 | { | |
87f0532f | 710 | textprops[num_textprops].argnum = argnum; |
2d6115c8 | 711 | /* We ignore text properties on characters being combined. */ |
87f0532f KH |
712 | textprops[num_textprops].from = combined; |
713 | textprops[num_textprops++].to = toindex; | |
2d6115c8 | 714 | } |
ea35ce3d | 715 | toindex_byte += thislen_byte; |
2d6115c8 KH |
716 | toindex += thisleni - combined; |
717 | XSTRING (val)->size -= combined; | |
ea35ce3d | 718 | } |
09ab3c3b KH |
719 | /* Copy a single-byte string to a multibyte string. */ |
720 | else if (STRINGP (this) && STRINGP (val)) | |
721 | { | |
2d6115c8 KH |
722 | if (! NULL_INTERVAL_P (XSTRING (this)->intervals)) |
723 | { | |
87f0532f KH |
724 | textprops[num_textprops].argnum = argnum; |
725 | textprops[num_textprops].from = 0; | |
726 | textprops[num_textprops++].to = toindex; | |
2d6115c8 | 727 | } |
09ab3c3b KH |
728 | toindex_byte += copy_text (XSTRING (this)->data, |
729 | XSTRING (val)->data + toindex_byte, | |
730 | XSTRING (this)->size, 0, 1); | |
731 | toindex += thisleni; | |
732 | } | |
ea35ce3d RS |
733 | else |
734 | /* Copy element by element. */ | |
735 | while (1) | |
736 | { | |
737 | register Lisp_Object elt; | |
738 | ||
739 | /* Fetch next element of `this' arg into `elt', or break if | |
740 | `this' is exhausted. */ | |
741 | if (NILP (this)) break; | |
742 | if (CONSP (this)) | |
70949dac | 743 | elt = XCAR (this), this = XCDR (this); |
6a7df83b RS |
744 | else if (thisindex >= thisleni) |
745 | break; | |
746 | else if (STRINGP (this)) | |
ea35ce3d | 747 | { |
2cef5737 | 748 | int c; |
6a7df83b | 749 | if (STRING_MULTIBYTE (this)) |
ea35ce3d | 750 | { |
2efdd1b9 KH |
751 | FETCH_STRING_CHAR_ADVANCE_NO_CHECK (c, this, |
752 | thisindex, | |
753 | thisindex_byte); | |
6a7df83b | 754 | XSETFASTINT (elt, c); |
ea35ce3d | 755 | } |
6a7df83b | 756 | else |
ea35ce3d | 757 | { |
6a7df83b | 758 | XSETFASTINT (elt, XSTRING (this)->data[thisindex++]); |
e0e25273 KH |
759 | if (some_multibyte |
760 | && (XINT (elt) >= 0240 | |
f9638719 EZ |
761 | || (XINT (elt) >= 0200 |
762 | && ! NILP (Vnonascii_translation_table))) | |
6a7df83b RS |
763 | && XINT (elt) < 0400) |
764 | { | |
2cef5737 | 765 | c = unibyte_char_to_multibyte (XINT (elt)); |
6a7df83b RS |
766 | XSETINT (elt, c); |
767 | } | |
ea35ce3d | 768 | } |
6a7df83b RS |
769 | } |
770 | else if (BOOL_VECTOR_P (this)) | |
771 | { | |
772 | int byte; | |
773 | byte = XBOOL_VECTOR (this)->data[thisindex / BITS_PER_CHAR]; | |
774 | if (byte & (1 << (thisindex % BITS_PER_CHAR))) | |
775 | elt = Qt; | |
ea35ce3d | 776 | else |
6a7df83b RS |
777 | elt = Qnil; |
778 | thisindex++; | |
ea35ce3d | 779 | } |
6a7df83b RS |
780 | else |
781 | elt = XVECTOR (this)->contents[thisindex++]; | |
7b863bd5 | 782 | |
ea35ce3d RS |
783 | /* Store this element into the result. */ |
784 | if (toindex < 0) | |
7b863bd5 | 785 | { |
f3fbd155 | 786 | XSETCAR (tail, elt); |
ea35ce3d | 787 | prev = tail; |
70949dac | 788 | tail = XCDR (tail); |
7b863bd5 | 789 | } |
ea35ce3d RS |
790 | else if (VECTORP (val)) |
791 | XVECTOR (val)->contents[toindex++] = elt; | |
792 | else | |
793 | { | |
b7826503 | 794 | CHECK_NUMBER (elt); |
ea35ce3d RS |
795 | if (SINGLE_BYTE_CHAR_P (XINT (elt))) |
796 | { | |
2efdd1b9 KH |
797 | if (some_multibyte) |
798 | toindex_byte | |
799 | += CHAR_STRING (XINT (elt), | |
800 | XSTRING (val)->data + toindex_byte); | |
801 | else | |
802 | XSTRING (val)->data[toindex_byte++] = XINT (elt); | |
18cc260b KH |
803 | if (some_multibyte |
804 | && toindex_byte > 0 | |
2d6115c8 KH |
805 | && count_combining (XSTRING (val)->data, |
806 | toindex_byte, toindex_byte - 1)) | |
807 | XSTRING (val)->size--; | |
808 | else | |
809 | toindex++; | |
ea35ce3d RS |
810 | } |
811 | else | |
812 | /* If we have any multibyte characters, | |
813 | we already decided to make a multibyte string. */ | |
814 | { | |
815 | int c = XINT (elt); | |
ea35ce3d RS |
816 | /* P exists as a variable |
817 | to avoid a bug on the Masscomp C compiler. */ | |
818 | unsigned char *p = & XSTRING (val)->data[toindex_byte]; | |
64a5094a KH |
819 | |
820 | toindex_byte += CHAR_STRING (c, p); | |
ea35ce3d RS |
821 | toindex++; |
822 | } | |
823 | } | |
824 | } | |
7b863bd5 | 825 | } |
265a9e55 | 826 | if (!NILP (prev)) |
f3fbd155 | 827 | XSETCDR (prev, last_tail); |
7b863bd5 | 828 | |
87f0532f | 829 | if (num_textprops > 0) |
2d6115c8 | 830 | { |
33f37824 | 831 | Lisp_Object props; |
3bd00f3b | 832 | int last_to_end = -1; |
33f37824 | 833 | |
87f0532f | 834 | for (argnum = 0; argnum < num_textprops; argnum++) |
2d6115c8 | 835 | { |
87f0532f | 836 | this = args[textprops[argnum].argnum]; |
33f37824 KH |
837 | props = text_property_list (this, |
838 | make_number (0), | |
839 | make_number (XSTRING (this)->size), | |
840 | Qnil); | |
841 | /* If successive arguments have properites, be sure that the | |
842 | value of `composition' property be the copy. */ | |
3bd00f3b | 843 | if (last_to_end == textprops[argnum].to) |
33f37824 KH |
844 | make_composition_value_copy (props); |
845 | add_text_properties_from_list (val, props, | |
846 | make_number (textprops[argnum].to)); | |
3bd00f3b | 847 | last_to_end = textprops[argnum].to + XSTRING (this)->size; |
2d6115c8 KH |
848 | } |
849 | } | |
b4f334f7 | 850 | return val; |
7b863bd5 JB |
851 | } |
852 | \f | |
09ab3c3b KH |
853 | static Lisp_Object string_char_byte_cache_string; |
854 | static int string_char_byte_cache_charpos; | |
855 | static int string_char_byte_cache_bytepos; | |
856 | ||
57247650 KH |
857 | void |
858 | clear_string_char_byte_cache () | |
859 | { | |
860 | string_char_byte_cache_string = Qnil; | |
861 | } | |
862 | ||
ea35ce3d RS |
863 | /* Return the character index corresponding to CHAR_INDEX in STRING. */ |
864 | ||
865 | int | |
866 | string_char_to_byte (string, char_index) | |
867 | Lisp_Object string; | |
868 | int char_index; | |
869 | { | |
09ab3c3b KH |
870 | int i, i_byte; |
871 | int best_below, best_below_byte; | |
872 | int best_above, best_above_byte; | |
ea35ce3d RS |
873 | |
874 | if (! STRING_MULTIBYTE (string)) | |
875 | return char_index; | |
876 | ||
09ab3c3b KH |
877 | best_below = best_below_byte = 0; |
878 | best_above = XSTRING (string)->size; | |
fc932ac6 | 879 | best_above_byte = STRING_BYTES (XSTRING (string)); |
09ab3c3b KH |
880 | |
881 | if (EQ (string, string_char_byte_cache_string)) | |
882 | { | |
883 | if (string_char_byte_cache_charpos < char_index) | |
884 | { | |
885 | best_below = string_char_byte_cache_charpos; | |
886 | best_below_byte = string_char_byte_cache_bytepos; | |
887 | } | |
888 | else | |
889 | { | |
890 | best_above = string_char_byte_cache_charpos; | |
891 | best_above_byte = string_char_byte_cache_bytepos; | |
892 | } | |
893 | } | |
894 | ||
895 | if (char_index - best_below < best_above - char_index) | |
896 | { | |
897 | while (best_below < char_index) | |
898 | { | |
899 | int c; | |
2efdd1b9 KH |
900 | FETCH_STRING_CHAR_ADVANCE_NO_CHECK (c, string, |
901 | best_below, best_below_byte); | |
09ab3c3b KH |
902 | } |
903 | i = best_below; | |
904 | i_byte = best_below_byte; | |
905 | } | |
906 | else | |
ea35ce3d | 907 | { |
09ab3c3b KH |
908 | while (best_above > char_index) |
909 | { | |
e50d9192 KH |
910 | unsigned char *pend = XSTRING (string)->data + best_above_byte; |
911 | unsigned char *pbeg = pend - best_above_byte; | |
912 | unsigned char *p = pend - 1; | |
913 | int bytes; | |
914 | ||
915 | while (p > pbeg && !CHAR_HEAD_P (*p)) p--; | |
916 | PARSE_MULTIBYTE_SEQ (p, pend - p, bytes); | |
917 | if (bytes == pend - p) | |
918 | best_above_byte -= bytes; | |
919 | else if (bytes > pend - p) | |
920 | best_above_byte -= (pend - p); | |
921 | else | |
09ab3c3b | 922 | best_above_byte--; |
09ab3c3b KH |
923 | best_above--; |
924 | } | |
925 | i = best_above; | |
926 | i_byte = best_above_byte; | |
ea35ce3d RS |
927 | } |
928 | ||
09ab3c3b KH |
929 | string_char_byte_cache_bytepos = i_byte; |
930 | string_char_byte_cache_charpos = i; | |
931 | string_char_byte_cache_string = string; | |
932 | ||
ea35ce3d RS |
933 | return i_byte; |
934 | } | |
09ab3c3b | 935 | \f |
ea35ce3d RS |
936 | /* Return the character index corresponding to BYTE_INDEX in STRING. */ |
937 | ||
938 | int | |
939 | string_byte_to_char (string, byte_index) | |
940 | Lisp_Object string; | |
941 | int byte_index; | |
942 | { | |
09ab3c3b KH |
943 | int i, i_byte; |
944 | int best_below, best_below_byte; | |
945 | int best_above, best_above_byte; | |
ea35ce3d RS |
946 | |
947 | if (! STRING_MULTIBYTE (string)) | |
948 | return byte_index; | |
949 | ||
09ab3c3b KH |
950 | best_below = best_below_byte = 0; |
951 | best_above = XSTRING (string)->size; | |
fc932ac6 | 952 | best_above_byte = STRING_BYTES (XSTRING (string)); |
09ab3c3b KH |
953 | |
954 | if (EQ (string, string_char_byte_cache_string)) | |
955 | { | |
956 | if (string_char_byte_cache_bytepos < byte_index) | |
957 | { | |
958 | best_below = string_char_byte_cache_charpos; | |
959 | best_below_byte = string_char_byte_cache_bytepos; | |
960 | } | |
961 | else | |
962 | { | |
963 | best_above = string_char_byte_cache_charpos; | |
964 | best_above_byte = string_char_byte_cache_bytepos; | |
965 | } | |
966 | } | |
967 | ||
968 | if (byte_index - best_below_byte < best_above_byte - byte_index) | |
969 | { | |
970 | while (best_below_byte < byte_index) | |
971 | { | |
972 | int c; | |
2efdd1b9 KH |
973 | FETCH_STRING_CHAR_ADVANCE_NO_CHECK (c, string, |
974 | best_below, best_below_byte); | |
09ab3c3b KH |
975 | } |
976 | i = best_below; | |
977 | i_byte = best_below_byte; | |
978 | } | |
979 | else | |
ea35ce3d | 980 | { |
09ab3c3b KH |
981 | while (best_above_byte > byte_index) |
982 | { | |
e50d9192 KH |
983 | unsigned char *pend = XSTRING (string)->data + best_above_byte; |
984 | unsigned char *pbeg = pend - best_above_byte; | |
985 | unsigned char *p = pend - 1; | |
986 | int bytes; | |
987 | ||
988 | while (p > pbeg && !CHAR_HEAD_P (*p)) p--; | |
989 | PARSE_MULTIBYTE_SEQ (p, pend - p, bytes); | |
990 | if (bytes == pend - p) | |
991 | best_above_byte -= bytes; | |
992 | else if (bytes > pend - p) | |
993 | best_above_byte -= (pend - p); | |
994 | else | |
09ab3c3b | 995 | best_above_byte--; |
09ab3c3b KH |
996 | best_above--; |
997 | } | |
998 | i = best_above; | |
999 | i_byte = best_above_byte; | |
ea35ce3d RS |
1000 | } |
1001 | ||
09ab3c3b KH |
1002 | string_char_byte_cache_bytepos = i_byte; |
1003 | string_char_byte_cache_charpos = i; | |
1004 | string_char_byte_cache_string = string; | |
1005 | ||
ea35ce3d RS |
1006 | return i; |
1007 | } | |
09ab3c3b | 1008 | \f |
ea35ce3d | 1009 | /* Convert STRING to a multibyte string. |
2cef5737 | 1010 | Single-byte characters 0240 through 0377 are converted |
ea35ce3d RS |
1011 | by adding nonascii_insert_offset to each. */ |
1012 | ||
1013 | Lisp_Object | |
1014 | string_make_multibyte (string) | |
1015 | Lisp_Object string; | |
1016 | { | |
1017 | unsigned char *buf; | |
1018 | int nbytes; | |
1019 | ||
1020 | if (STRING_MULTIBYTE (string)) | |
1021 | return string; | |
1022 | ||
1023 | nbytes = count_size_as_multibyte (XSTRING (string)->data, | |
1024 | XSTRING (string)->size); | |
6d475204 RS |
1025 | /* If all the chars are ASCII, they won't need any more bytes |
1026 | once converted. In that case, we can return STRING itself. */ | |
fc932ac6 | 1027 | if (nbytes == STRING_BYTES (XSTRING (string))) |
6d475204 RS |
1028 | return string; |
1029 | ||
ea35ce3d | 1030 | buf = (unsigned char *) alloca (nbytes); |
fc932ac6 | 1031 | copy_text (XSTRING (string)->data, buf, STRING_BYTES (XSTRING (string)), |
ea35ce3d RS |
1032 | 0, 1); |
1033 | ||
1034 | return make_multibyte_string (buf, XSTRING (string)->size, nbytes); | |
1035 | } | |
1036 | ||
1037 | /* Convert STRING to a single-byte string. */ | |
1038 | ||
1039 | Lisp_Object | |
1040 | string_make_unibyte (string) | |
1041 | Lisp_Object string; | |
1042 | { | |
1043 | unsigned char *buf; | |
1044 | ||
1045 | if (! STRING_MULTIBYTE (string)) | |
1046 | return string; | |
1047 | ||
1048 | buf = (unsigned char *) alloca (XSTRING (string)->size); | |
1049 | ||
fc932ac6 | 1050 | copy_text (XSTRING (string)->data, buf, STRING_BYTES (XSTRING (string)), |
ea35ce3d RS |
1051 | 1, 0); |
1052 | ||
1053 | return make_unibyte_string (buf, XSTRING (string)->size); | |
1054 | } | |
09ab3c3b KH |
1055 | |
1056 | DEFUN ("string-make-multibyte", Fstring_make_multibyte, Sstring_make_multibyte, | |
1057 | 1, 1, 0, | |
e9d8ddc9 | 1058 | doc: /* Return the multibyte equivalent of STRING. |
47cebab1 | 1059 | The function `unibyte-char-to-multibyte' is used to convert |
e9d8ddc9 MB |
1060 | each unibyte character to a multibyte character. */) |
1061 | (string) | |
09ab3c3b KH |
1062 | Lisp_Object string; |
1063 | { | |
b7826503 | 1064 | CHECK_STRING (string); |
aabd38ec | 1065 | |
09ab3c3b KH |
1066 | return string_make_multibyte (string); |
1067 | } | |
1068 | ||
1069 | DEFUN ("string-make-unibyte", Fstring_make_unibyte, Sstring_make_unibyte, | |
1070 | 1, 1, 0, | |
e9d8ddc9 | 1071 | doc: /* Return the unibyte equivalent of STRING. |
47cebab1 | 1072 | Multibyte character codes are converted to unibyte |
e9d8ddc9 MB |
1073 | by using just the low 8 bits. */) |
1074 | (string) | |
09ab3c3b KH |
1075 | Lisp_Object string; |
1076 | { | |
b7826503 | 1077 | CHECK_STRING (string); |
aabd38ec | 1078 | |
09ab3c3b KH |
1079 | return string_make_unibyte (string); |
1080 | } | |
6d475204 RS |
1081 | |
1082 | DEFUN ("string-as-unibyte", Fstring_as_unibyte, Sstring_as_unibyte, | |
1083 | 1, 1, 0, | |
e9d8ddc9 | 1084 | doc: /* Return a unibyte string with the same individual bytes as STRING. |
47cebab1 GM |
1085 | If STRING is unibyte, the result is STRING itself. |
1086 | Otherwise it is a newly created string, with no text properties. | |
1087 | If STRING is multibyte and contains a character of charset | |
1088 | `eight-bit-control' or `eight-bit-graphic', it is converted to the | |
e9d8ddc9 MB |
1089 | corresponding single byte. */) |
1090 | (string) | |
6d475204 RS |
1091 | Lisp_Object string; |
1092 | { | |
b7826503 | 1093 | CHECK_STRING (string); |
aabd38ec | 1094 | |
6d475204 RS |
1095 | if (STRING_MULTIBYTE (string)) |
1096 | { | |
2efdd1b9 KH |
1097 | int bytes = STRING_BYTES (XSTRING (string)); |
1098 | unsigned char *str = (unsigned char *) xmalloc (bytes); | |
1099 | ||
1100 | bcopy (XSTRING (string)->data, str, bytes); | |
1101 | bytes = str_as_unibyte (str, bytes); | |
1102 | string = make_unibyte_string (str, bytes); | |
1103 | xfree (str); | |
6d475204 RS |
1104 | } |
1105 | return string; | |
1106 | } | |
1107 | ||
1108 | DEFUN ("string-as-multibyte", Fstring_as_multibyte, Sstring_as_multibyte, | |
1109 | 1, 1, 0, | |
e9d8ddc9 | 1110 | doc: /* Return a multibyte string with the same individual bytes as STRING. |
47cebab1 GM |
1111 | If STRING is multibyte, the result is STRING itself. |
1112 | Otherwise it is a newly created string, with no text properties. | |
1113 | If STRING is unibyte and contains an individual 8-bit byte (i.e. not | |
1114 | part of a multibyte form), it is converted to the corresponding | |
e9d8ddc9 MB |
1115 | multibyte character of charset `eight-bit-control' or `eight-bit-graphic'. */) |
1116 | (string) | |
6d475204 RS |
1117 | Lisp_Object string; |
1118 | { | |
b7826503 | 1119 | CHECK_STRING (string); |
aabd38ec | 1120 | |
6d475204 RS |
1121 | if (! STRING_MULTIBYTE (string)) |
1122 | { | |
2efdd1b9 KH |
1123 | Lisp_Object new_string; |
1124 | int nchars, nbytes; | |
1125 | ||
1126 | parse_str_as_multibyte (XSTRING (string)->data, | |
1127 | STRING_BYTES (XSTRING (string)), | |
1128 | &nchars, &nbytes); | |
1129 | new_string = make_uninit_multibyte_string (nchars, nbytes); | |
1130 | bcopy (XSTRING (string)->data, XSTRING (new_string)->data, | |
1131 | STRING_BYTES (XSTRING (string))); | |
1132 | if (nbytes != STRING_BYTES (XSTRING (string))) | |
1133 | str_as_multibyte (XSTRING (new_string)->data, nbytes, | |
1134 | STRING_BYTES (XSTRING (string)), NULL); | |
1135 | string = new_string; | |
f4e09ae7 | 1136 | XSTRING (string)->intervals = NULL_INTERVAL; |
6d475204 RS |
1137 | } |
1138 | return string; | |
1139 | } | |
ea35ce3d | 1140 | \f |
7b863bd5 | 1141 | DEFUN ("copy-alist", Fcopy_alist, Scopy_alist, 1, 1, 0, |
e9d8ddc9 | 1142 | doc: /* Return a copy of ALIST. |
47cebab1 GM |
1143 | This is an alist which represents the same mapping from objects to objects, |
1144 | but does not share the alist structure with ALIST. | |
1145 | The objects mapped (cars and cdrs of elements of the alist) | |
1146 | are shared, however. | |
e9d8ddc9 MB |
1147 | Elements of ALIST that are not conses are also shared. */) |
1148 | (alist) | |
7b863bd5 JB |
1149 | Lisp_Object alist; |
1150 | { | |
1151 | register Lisp_Object tem; | |
1152 | ||
b7826503 | 1153 | CHECK_LIST (alist); |
265a9e55 | 1154 | if (NILP (alist)) |
7b863bd5 JB |
1155 | return alist; |
1156 | alist = concat (1, &alist, Lisp_Cons, 0); | |
70949dac | 1157 | for (tem = alist; CONSP (tem); tem = XCDR (tem)) |
7b863bd5 JB |
1158 | { |
1159 | register Lisp_Object car; | |
70949dac | 1160 | car = XCAR (tem); |
7b863bd5 JB |
1161 | |
1162 | if (CONSP (car)) | |
f3fbd155 | 1163 | XSETCAR (tem, Fcons (XCAR (car), XCDR (car))); |
7b863bd5 JB |
1164 | } |
1165 | return alist; | |
1166 | } | |
1167 | ||
1168 | DEFUN ("substring", Fsubstring, Ssubstring, 2, 3, 0, | |
ddb67bdc | 1169 | doc: /* Return a substring of STRING, starting at index FROM and ending before TO. |
47cebab1 GM |
1170 | TO may be nil or omitted; then the substring runs to the end of STRING. |
1171 | If FROM or TO is negative, it counts from the end. | |
1172 | ||
e9d8ddc9 MB |
1173 | This function allows vectors as well as strings. */) |
1174 | (string, from, to) | |
7b863bd5 JB |
1175 | Lisp_Object string; |
1176 | register Lisp_Object from, to; | |
1177 | { | |
ac811a55 | 1178 | Lisp_Object res; |
21fbc8e5 | 1179 | int size; |
093386ca | 1180 | int size_byte = 0; |
ea35ce3d | 1181 | int from_char, to_char; |
093386ca | 1182 | int from_byte = 0, to_byte = 0; |
21fbc8e5 RS |
1183 | |
1184 | if (! (STRINGP (string) || VECTORP (string))) | |
1185 | wrong_type_argument (Qarrayp, string); | |
ac811a55 | 1186 | |
b7826503 | 1187 | CHECK_NUMBER (from); |
21fbc8e5 RS |
1188 | |
1189 | if (STRINGP (string)) | |
ea35ce3d RS |
1190 | { |
1191 | size = XSTRING (string)->size; | |
fc932ac6 | 1192 | size_byte = STRING_BYTES (XSTRING (string)); |
ea35ce3d | 1193 | } |
21fbc8e5 RS |
1194 | else |
1195 | size = XVECTOR (string)->size; | |
1196 | ||
265a9e55 | 1197 | if (NILP (to)) |
ea35ce3d RS |
1198 | { |
1199 | to_char = size; | |
1200 | to_byte = size_byte; | |
1201 | } | |
7b863bd5 | 1202 | else |
ea35ce3d | 1203 | { |
b7826503 | 1204 | CHECK_NUMBER (to); |
ea35ce3d RS |
1205 | |
1206 | to_char = XINT (to); | |
1207 | if (to_char < 0) | |
1208 | to_char += size; | |
1209 | ||
1210 | if (STRINGP (string)) | |
1211 | to_byte = string_char_to_byte (string, to_char); | |
1212 | } | |
1213 | ||
1214 | from_char = XINT (from); | |
1215 | if (from_char < 0) | |
1216 | from_char += size; | |
1217 | if (STRINGP (string)) | |
1218 | from_byte = string_char_to_byte (string, from_char); | |
7b863bd5 | 1219 | |
ea35ce3d RS |
1220 | if (!(0 <= from_char && from_char <= to_char && to_char <= size)) |
1221 | args_out_of_range_3 (string, make_number (from_char), | |
1222 | make_number (to_char)); | |
7b863bd5 | 1223 | |
21fbc8e5 RS |
1224 | if (STRINGP (string)) |
1225 | { | |
b10b2daa RS |
1226 | res = make_specified_string (XSTRING (string)->data + from_byte, |
1227 | to_char - from_char, to_byte - from_byte, | |
1228 | STRING_MULTIBYTE (string)); | |
21ab867f AS |
1229 | copy_text_properties (make_number (from_char), make_number (to_char), |
1230 | string, make_number (0), res, Qnil); | |
ea35ce3d RS |
1231 | } |
1232 | else | |
1233 | res = Fvector (to_char - from_char, | |
1234 | XVECTOR (string)->contents + from_char); | |
1235 | ||
1236 | return res; | |
1237 | } | |
1238 | ||
aebf4d42 RS |
1239 | |
1240 | DEFUN ("substring-no-properties", Fsubstring_no_properties, Ssubstring_no_properties, 1, 3, 0, | |
1241 | doc: /* Return a substring of STRING, without text properties. | |
1242 | It starts at index FROM and ending before TO. | |
1243 | TO may be nil or omitted; then the substring runs to the end of STRING. | |
1244 | If FROM is nil or omitted, the substring starts at the beginning of STRING. | |
1245 | If FROM or TO is negative, it counts from the end. | |
1246 | ||
1247 | With one argument, just copy STRING without its properties. */) | |
1248 | (string, from, to) | |
1249 | Lisp_Object string; | |
1250 | register Lisp_Object from, to; | |
1251 | { | |
1252 | int size, size_byte; | |
1253 | int from_char, to_char; | |
1254 | int from_byte, to_byte; | |
1255 | ||
1256 | CHECK_STRING (string); | |
1257 | ||
1258 | size = XSTRING (string)->size; | |
1259 | size_byte = STRING_BYTES (XSTRING (string)); | |
1260 | ||
1261 | if (NILP (from)) | |
1262 | from_char = from_byte = 0; | |
1263 | else | |
1264 | { | |
1265 | CHECK_NUMBER (from); | |
1266 | from_char = XINT (from); | |
1267 | if (from_char < 0) | |
1268 | from_char += size; | |
1269 | ||
1270 | from_byte = string_char_to_byte (string, from_char); | |
1271 | } | |
1272 | ||
1273 | if (NILP (to)) | |
1274 | { | |
1275 | to_char = size; | |
1276 | to_byte = size_byte; | |
1277 | } | |
1278 | else | |
1279 | { | |
1280 | CHECK_NUMBER (to); | |
1281 | ||
1282 | to_char = XINT (to); | |
1283 | if (to_char < 0) | |
1284 | to_char += size; | |
1285 | ||
1286 | to_byte = string_char_to_byte (string, to_char); | |
1287 | } | |
1288 | ||
1289 | if (!(0 <= from_char && from_char <= to_char && to_char <= size)) | |
1290 | args_out_of_range_3 (string, make_number (from_char), | |
1291 | make_number (to_char)); | |
1292 | ||
1293 | return make_specified_string (XSTRING (string)->data + from_byte, | |
1294 | to_char - from_char, to_byte - from_byte, | |
1295 | STRING_MULTIBYTE (string)); | |
1296 | } | |
1297 | ||
ea35ce3d RS |
1298 | /* Extract a substring of STRING, giving start and end positions |
1299 | both in characters and in bytes. */ | |
1300 | ||
1301 | Lisp_Object | |
1302 | substring_both (string, from, from_byte, to, to_byte) | |
1303 | Lisp_Object string; | |
1304 | int from, from_byte, to, to_byte; | |
1305 | { | |
1306 | Lisp_Object res; | |
1307 | int size; | |
1308 | int size_byte; | |
1309 | ||
1310 | if (! (STRINGP (string) || VECTORP (string))) | |
1311 | wrong_type_argument (Qarrayp, string); | |
1312 | ||
1313 | if (STRINGP (string)) | |
1314 | { | |
1315 | size = XSTRING (string)->size; | |
fc932ac6 | 1316 | size_byte = STRING_BYTES (XSTRING (string)); |
ea35ce3d RS |
1317 | } |
1318 | else | |
1319 | size = XVECTOR (string)->size; | |
1320 | ||
1321 | if (!(0 <= from && from <= to && to <= size)) | |
1322 | args_out_of_range_3 (string, make_number (from), make_number (to)); | |
1323 | ||
1324 | if (STRINGP (string)) | |
1325 | { | |
b10b2daa RS |
1326 | res = make_specified_string (XSTRING (string)->data + from_byte, |
1327 | to - from, to_byte - from_byte, | |
1328 | STRING_MULTIBYTE (string)); | |
21ab867f AS |
1329 | copy_text_properties (make_number (from), make_number (to), |
1330 | string, make_number (0), res, Qnil); | |
21fbc8e5 RS |
1331 | } |
1332 | else | |
ea35ce3d RS |
1333 | res = Fvector (to - from, |
1334 | XVECTOR (string)->contents + from); | |
b4f334f7 | 1335 | |
ac811a55 | 1336 | return res; |
7b863bd5 JB |
1337 | } |
1338 | \f | |
1339 | DEFUN ("nthcdr", Fnthcdr, Snthcdr, 2, 2, 0, | |
e9d8ddc9 MB |
1340 | doc: /* Take cdr N times on LIST, returns the result. */) |
1341 | (n, list) | |
7b863bd5 JB |
1342 | Lisp_Object n; |
1343 | register Lisp_Object list; | |
1344 | { | |
1345 | register int i, num; | |
b7826503 | 1346 | CHECK_NUMBER (n); |
7b863bd5 | 1347 | num = XINT (n); |
265a9e55 | 1348 | for (i = 0; i < num && !NILP (list); i++) |
7b863bd5 JB |
1349 | { |
1350 | QUIT; | |
71a8e74b DL |
1351 | if (! CONSP (list)) |
1352 | wrong_type_argument (Qlistp, list); | |
1353 | list = XCDR (list); | |
7b863bd5 JB |
1354 | } |
1355 | return list; | |
1356 | } | |
1357 | ||
1358 | DEFUN ("nth", Fnth, Snth, 2, 2, 0, | |
e9d8ddc9 MB |
1359 | doc: /* Return the Nth element of LIST. |
1360 | N counts from zero. If LIST is not that long, nil is returned. */) | |
1361 | (n, list) | |
7b863bd5 JB |
1362 | Lisp_Object n, list; |
1363 | { | |
1364 | return Fcar (Fnthcdr (n, list)); | |
1365 | } | |
1366 | ||
1367 | DEFUN ("elt", Felt, Selt, 2, 2, 0, | |
e9d8ddc9 MB |
1368 | doc: /* Return element of SEQUENCE at index N. */) |
1369 | (sequence, n) | |
88fe8140 | 1370 | register Lisp_Object sequence, n; |
7b863bd5 | 1371 | { |
b7826503 | 1372 | CHECK_NUMBER (n); |
7b863bd5 JB |
1373 | while (1) |
1374 | { | |
88fe8140 EN |
1375 | if (CONSP (sequence) || NILP (sequence)) |
1376 | return Fcar (Fnthcdr (n, sequence)); | |
1377 | else if (STRINGP (sequence) || VECTORP (sequence) | |
1378 | || BOOL_VECTOR_P (sequence) || CHAR_TABLE_P (sequence)) | |
1379 | return Faref (sequence, n); | |
7b863bd5 | 1380 | else |
88fe8140 | 1381 | sequence = wrong_type_argument (Qsequencep, sequence); |
7b863bd5 JB |
1382 | } |
1383 | } | |
1384 | ||
1385 | DEFUN ("member", Fmember, Smember, 2, 2, 0, | |
e9d8ddc9 MB |
1386 | doc: /* Return non-nil if ELT is an element of LIST. Comparison done with `equal'. |
1387 | The value is actually the tail of LIST whose car is ELT. */) | |
1388 | (elt, list) | |
7b863bd5 JB |
1389 | register Lisp_Object elt; |
1390 | Lisp_Object list; | |
1391 | { | |
1392 | register Lisp_Object tail; | |
70949dac | 1393 | for (tail = list; !NILP (tail); tail = XCDR (tail)) |
7b863bd5 JB |
1394 | { |
1395 | register Lisp_Object tem; | |
71a8e74b DL |
1396 | if (! CONSP (tail)) |
1397 | wrong_type_argument (Qlistp, list); | |
1398 | tem = XCAR (tail); | |
265a9e55 | 1399 | if (! NILP (Fequal (elt, tem))) |
7b863bd5 JB |
1400 | return tail; |
1401 | QUIT; | |
1402 | } | |
1403 | return Qnil; | |
1404 | } | |
1405 | ||
1406 | DEFUN ("memq", Fmemq, Smemq, 2, 2, 0, | |
e9d8ddc9 | 1407 | doc: /* Return non-nil if ELT is an element of LIST. |
47cebab1 | 1408 | Comparison done with EQ. The value is actually the tail of LIST |
e9d8ddc9 MB |
1409 | whose car is ELT. */) |
1410 | (elt, list) | |
f2be3671 | 1411 | Lisp_Object elt, list; |
7b863bd5 | 1412 | { |
f2be3671 | 1413 | while (1) |
7b863bd5 | 1414 | { |
f2be3671 GM |
1415 | if (!CONSP (list) || EQ (XCAR (list), elt)) |
1416 | break; | |
59f953a2 | 1417 | |
f2be3671 GM |
1418 | list = XCDR (list); |
1419 | if (!CONSP (list) || EQ (XCAR (list), elt)) | |
1420 | break; | |
1421 | ||
1422 | list = XCDR (list); | |
1423 | if (!CONSP (list) || EQ (XCAR (list), elt)) | |
1424 | break; | |
1425 | ||
1426 | list = XCDR (list); | |
7b863bd5 JB |
1427 | QUIT; |
1428 | } | |
f2be3671 GM |
1429 | |
1430 | if (!CONSP (list) && !NILP (list)) | |
1431 | list = wrong_type_argument (Qlistp, list); | |
1432 | ||
1433 | return list; | |
7b863bd5 JB |
1434 | } |
1435 | ||
1436 | DEFUN ("assq", Fassq, Sassq, 2, 2, 0, | |
e9d8ddc9 | 1437 | doc: /* Return non-nil if KEY is `eq' to the car of an element of LIST. |
47cebab1 | 1438 | The value is actually the element of LIST whose car is KEY. |
e9d8ddc9 MB |
1439 | Elements of LIST that are not conses are ignored. */) |
1440 | (key, list) | |
f2be3671 | 1441 | Lisp_Object key, list; |
7b863bd5 | 1442 | { |
f2be3671 GM |
1443 | Lisp_Object result; |
1444 | ||
1445 | while (1) | |
7b863bd5 | 1446 | { |
f2be3671 GM |
1447 | if (!CONSP (list) |
1448 | || (CONSP (XCAR (list)) | |
1449 | && EQ (XCAR (XCAR (list)), key))) | |
1450 | break; | |
59f953a2 | 1451 | |
f2be3671 GM |
1452 | list = XCDR (list); |
1453 | if (!CONSP (list) | |
1454 | || (CONSP (XCAR (list)) | |
1455 | && EQ (XCAR (XCAR (list)), key))) | |
1456 | break; | |
59f953a2 | 1457 | |
f2be3671 GM |
1458 | list = XCDR (list); |
1459 | if (!CONSP (list) | |
1460 | || (CONSP (XCAR (list)) | |
1461 | && EQ (XCAR (XCAR (list)), key))) | |
1462 | break; | |
59f953a2 | 1463 | |
f2be3671 | 1464 | list = XCDR (list); |
7b863bd5 JB |
1465 | QUIT; |
1466 | } | |
f2be3671 GM |
1467 | |
1468 | if (CONSP (list)) | |
1469 | result = XCAR (list); | |
1470 | else if (NILP (list)) | |
1471 | result = Qnil; | |
1472 | else | |
1473 | result = wrong_type_argument (Qlistp, list); | |
1474 | ||
1475 | return result; | |
7b863bd5 JB |
1476 | } |
1477 | ||
1478 | /* Like Fassq but never report an error and do not allow quits. | |
1479 | Use only on lists known never to be circular. */ | |
1480 | ||
1481 | Lisp_Object | |
1482 | assq_no_quit (key, list) | |
f2be3671 | 1483 | Lisp_Object key, list; |
7b863bd5 | 1484 | { |
f2be3671 GM |
1485 | while (CONSP (list) |
1486 | && (!CONSP (XCAR (list)) | |
1487 | || !EQ (XCAR (XCAR (list)), key))) | |
1488 | list = XCDR (list); | |
1489 | ||
1490 | return CONSP (list) ? XCAR (list) : Qnil; | |
7b863bd5 JB |
1491 | } |
1492 | ||
1493 | DEFUN ("assoc", Fassoc, Sassoc, 2, 2, 0, | |
e9d8ddc9 MB |
1494 | doc: /* Return non-nil if KEY is `equal' to the car of an element of LIST. |
1495 | The value is actually the element of LIST whose car equals KEY. */) | |
1496 | (key, list) | |
f2be3671 | 1497 | Lisp_Object key, list; |
7b863bd5 | 1498 | { |
f2be3671 GM |
1499 | Lisp_Object result, car; |
1500 | ||
1501 | while (1) | |
7b863bd5 | 1502 | { |
f2be3671 GM |
1503 | if (!CONSP (list) |
1504 | || (CONSP (XCAR (list)) | |
1505 | && (car = XCAR (XCAR (list)), | |
1506 | EQ (car, key) || !NILP (Fequal (car, key))))) | |
1507 | break; | |
59f953a2 | 1508 | |
f2be3671 GM |
1509 | list = XCDR (list); |
1510 | if (!CONSP (list) | |
1511 | || (CONSP (XCAR (list)) | |
1512 | && (car = XCAR (XCAR (list)), | |
1513 | EQ (car, key) || !NILP (Fequal (car, key))))) | |
1514 | break; | |
59f953a2 | 1515 | |
f2be3671 GM |
1516 | list = XCDR (list); |
1517 | if (!CONSP (list) | |
1518 | || (CONSP (XCAR (list)) | |
1519 | && (car = XCAR (XCAR (list)), | |
1520 | EQ (car, key) || !NILP (Fequal (car, 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 | DEFUN ("rassq", Frassq, Srassq, 2, 2, 0, | |
e9d8ddc9 MB |
1538 | doc: /* Return non-nil if KEY is `eq' to the cdr of an element of LIST. |
1539 | The value is actually the element of LIST whose cdr is KEY. */) | |
1540 | (key, list) | |
7b863bd5 JB |
1541 | register Lisp_Object key; |
1542 | Lisp_Object list; | |
1543 | { | |
f2be3671 GM |
1544 | Lisp_Object result; |
1545 | ||
1546 | while (1) | |
7b863bd5 | 1547 | { |
f2be3671 GM |
1548 | if (!CONSP (list) |
1549 | || (CONSP (XCAR (list)) | |
1550 | && EQ (XCDR (XCAR (list)), key))) | |
1551 | break; | |
59f953a2 | 1552 | |
f2be3671 GM |
1553 | list = XCDR (list); |
1554 | if (!CONSP (list) | |
1555 | || (CONSP (XCAR (list)) | |
1556 | && EQ (XCDR (XCAR (list)), key))) | |
1557 | break; | |
59f953a2 | 1558 | |
f2be3671 GM |
1559 | list = XCDR (list); |
1560 | if (!CONSP (list) | |
1561 | || (CONSP (XCAR (list)) | |
1562 | && EQ (XCDR (XCAR (list)), key))) | |
1563 | break; | |
59f953a2 | 1564 | |
f2be3671 | 1565 | list = XCDR (list); |
7b863bd5 JB |
1566 | QUIT; |
1567 | } | |
f2be3671 GM |
1568 | |
1569 | if (NILP (list)) | |
1570 | result = Qnil; | |
1571 | else if (CONSP (list)) | |
1572 | result = XCAR (list); | |
1573 | else | |
1574 | result = wrong_type_argument (Qlistp, list); | |
1575 | ||
1576 | return result; | |
7b863bd5 | 1577 | } |
0fb5a19c RS |
1578 | |
1579 | DEFUN ("rassoc", Frassoc, Srassoc, 2, 2, 0, | |
e9d8ddc9 MB |
1580 | doc: /* Return non-nil if KEY is `equal' to the cdr of an element of LIST. |
1581 | The value is actually the element of LIST whose cdr equals KEY. */) | |
1582 | (key, list) | |
f2be3671 | 1583 | Lisp_Object key, list; |
0fb5a19c | 1584 | { |
f2be3671 GM |
1585 | Lisp_Object result, cdr; |
1586 | ||
1587 | while (1) | |
0fb5a19c | 1588 | { |
f2be3671 GM |
1589 | if (!CONSP (list) |
1590 | || (CONSP (XCAR (list)) | |
1591 | && (cdr = XCDR (XCAR (list)), | |
1592 | EQ (cdr, key) || !NILP (Fequal (cdr, key))))) | |
1593 | break; | |
59f953a2 | 1594 | |
f2be3671 GM |
1595 | list = XCDR (list); |
1596 | if (!CONSP (list) | |
1597 | || (CONSP (XCAR (list)) | |
1598 | && (cdr = XCDR (XCAR (list)), | |
1599 | EQ (cdr, key) || !NILP (Fequal (cdr, key))))) | |
1600 | break; | |
59f953a2 | 1601 | |
f2be3671 GM |
1602 | list = XCDR (list); |
1603 | if (!CONSP (list) | |
1604 | || (CONSP (XCAR (list)) | |
1605 | && (cdr = XCDR (XCAR (list)), | |
1606 | EQ (cdr, key) || !NILP (Fequal (cdr, key))))) | |
1607 | break; | |
59f953a2 | 1608 | |
f2be3671 | 1609 | list = XCDR (list); |
0fb5a19c RS |
1610 | QUIT; |
1611 | } | |
f2be3671 GM |
1612 | |
1613 | if (CONSP (list)) | |
1614 | result = XCAR (list); | |
1615 | else if (NILP (list)) | |
1616 | result = Qnil; | |
1617 | else | |
1618 | result = wrong_type_argument (Qlistp, list); | |
1619 | ||
1620 | return result; | |
0fb5a19c | 1621 | } |
7b863bd5 JB |
1622 | \f |
1623 | DEFUN ("delq", Fdelq, Sdelq, 2, 2, 0, | |
e9d8ddc9 | 1624 | doc: /* Delete by side effect any occurrences of ELT as a member of LIST. |
47cebab1 GM |
1625 | The modified LIST is returned. Comparison is done with `eq'. |
1626 | If the first member of LIST is ELT, there is no way to remove it by side effect; | |
1627 | therefore, write `(setq foo (delq element foo))' | |
e9d8ddc9 MB |
1628 | to be sure of changing the value of `foo'. */) |
1629 | (elt, list) | |
7b863bd5 JB |
1630 | register Lisp_Object elt; |
1631 | Lisp_Object list; | |
1632 | { | |
1633 | register Lisp_Object tail, prev; | |
1634 | register Lisp_Object tem; | |
1635 | ||
1636 | tail = list; | |
1637 | prev = Qnil; | |
265a9e55 | 1638 | while (!NILP (tail)) |
7b863bd5 | 1639 | { |
71a8e74b DL |
1640 | if (! CONSP (tail)) |
1641 | wrong_type_argument (Qlistp, list); | |
1642 | tem = XCAR (tail); | |
7b863bd5 JB |
1643 | if (EQ (elt, tem)) |
1644 | { | |
265a9e55 | 1645 | if (NILP (prev)) |
70949dac | 1646 | list = XCDR (tail); |
7b863bd5 | 1647 | else |
70949dac | 1648 | Fsetcdr (prev, XCDR (tail)); |
7b863bd5 JB |
1649 | } |
1650 | else | |
1651 | prev = tail; | |
70949dac | 1652 | tail = XCDR (tail); |
7b863bd5 JB |
1653 | QUIT; |
1654 | } | |
1655 | return list; | |
1656 | } | |
1657 | ||
ca8dd546 | 1658 | DEFUN ("delete", Fdelete, Sdelete, 2, 2, 0, |
e9d8ddc9 | 1659 | doc: /* Delete by side effect any occurrences of ELT as a member of SEQ. |
47cebab1 GM |
1660 | SEQ must be a list, a vector, or a string. |
1661 | The modified SEQ is returned. Comparison is done with `equal'. | |
1662 | If SEQ is not a list, or the first member of SEQ is ELT, deleting it | |
1663 | is not a side effect; it is simply using a different sequence. | |
1664 | Therefore, write `(setq foo (delete element foo))' | |
e9d8ddc9 MB |
1665 | to be sure of changing the value of `foo'. */) |
1666 | (elt, seq) | |
e517f19d | 1667 | Lisp_Object elt, seq; |
1e134a5f | 1668 | { |
e517f19d GM |
1669 | if (VECTORP (seq)) |
1670 | { | |
504f24f1 | 1671 | EMACS_INT i, n; |
1e134a5f | 1672 | |
e517f19d GM |
1673 | for (i = n = 0; i < ASIZE (seq); ++i) |
1674 | if (NILP (Fequal (AREF (seq, i), elt))) | |
1675 | ++n; | |
1676 | ||
1677 | if (n != ASIZE (seq)) | |
1678 | { | |
b3660ef6 | 1679 | struct Lisp_Vector *p = allocate_vector (n); |
59f953a2 | 1680 | |
e517f19d GM |
1681 | for (i = n = 0; i < ASIZE (seq); ++i) |
1682 | if (NILP (Fequal (AREF (seq, i), elt))) | |
1683 | p->contents[n++] = AREF (seq, i); | |
1684 | ||
e517f19d GM |
1685 | XSETVECTOR (seq, p); |
1686 | } | |
1687 | } | |
1688 | else if (STRINGP (seq)) | |
1e134a5f | 1689 | { |
e517f19d GM |
1690 | EMACS_INT i, ibyte, nchars, nbytes, cbytes; |
1691 | int c; | |
1692 | ||
1693 | for (i = nchars = nbytes = ibyte = 0; | |
1694 | i < XSTRING (seq)->size; | |
1695 | ++i, ibyte += cbytes) | |
1e134a5f | 1696 | { |
e517f19d GM |
1697 | if (STRING_MULTIBYTE (seq)) |
1698 | { | |
1699 | c = STRING_CHAR (&XSTRING (seq)->data[ibyte], | |
1700 | STRING_BYTES (XSTRING (seq)) - ibyte); | |
1701 | cbytes = CHAR_BYTES (c); | |
1702 | } | |
1e134a5f | 1703 | else |
e517f19d GM |
1704 | { |
1705 | c = XSTRING (seq)->data[i]; | |
1706 | cbytes = 1; | |
1707 | } | |
59f953a2 | 1708 | |
e517f19d GM |
1709 | if (!INTEGERP (elt) || c != XINT (elt)) |
1710 | { | |
1711 | ++nchars; | |
1712 | nbytes += cbytes; | |
1713 | } | |
1714 | } | |
1715 | ||
1716 | if (nchars != XSTRING (seq)->size) | |
1717 | { | |
1718 | Lisp_Object tem; | |
1719 | ||
1720 | tem = make_uninit_multibyte_string (nchars, nbytes); | |
1721 | if (!STRING_MULTIBYTE (seq)) | |
1722 | SET_STRING_BYTES (XSTRING (tem), -1); | |
59f953a2 | 1723 | |
e517f19d GM |
1724 | for (i = nchars = nbytes = ibyte = 0; |
1725 | i < XSTRING (seq)->size; | |
1726 | ++i, ibyte += cbytes) | |
1727 | { | |
1728 | if (STRING_MULTIBYTE (seq)) | |
1729 | { | |
1730 | c = STRING_CHAR (&XSTRING (seq)->data[ibyte], | |
1731 | STRING_BYTES (XSTRING (seq)) - ibyte); | |
1732 | cbytes = CHAR_BYTES (c); | |
1733 | } | |
1734 | else | |
1735 | { | |
1736 | c = XSTRING (seq)->data[i]; | |
1737 | cbytes = 1; | |
1738 | } | |
59f953a2 | 1739 | |
e517f19d GM |
1740 | if (!INTEGERP (elt) || c != XINT (elt)) |
1741 | { | |
1742 | unsigned char *from = &XSTRING (seq)->data[ibyte]; | |
1743 | unsigned char *to = &XSTRING (tem)->data[nbytes]; | |
1744 | EMACS_INT n; | |
59f953a2 | 1745 | |
e517f19d GM |
1746 | ++nchars; |
1747 | nbytes += cbytes; | |
59f953a2 | 1748 | |
e517f19d GM |
1749 | for (n = cbytes; n--; ) |
1750 | *to++ = *from++; | |
1751 | } | |
1752 | } | |
1753 | ||
1754 | seq = tem; | |
1e134a5f | 1755 | } |
1e134a5f | 1756 | } |
e517f19d GM |
1757 | else |
1758 | { | |
1759 | Lisp_Object tail, prev; | |
1760 | ||
1761 | for (tail = seq, prev = Qnil; !NILP (tail); tail = XCDR (tail)) | |
1762 | { | |
1763 | if (!CONSP (tail)) | |
1764 | wrong_type_argument (Qlistp, seq); | |
59f953a2 | 1765 | |
e517f19d GM |
1766 | if (!NILP (Fequal (elt, XCAR (tail)))) |
1767 | { | |
1768 | if (NILP (prev)) | |
1769 | seq = XCDR (tail); | |
1770 | else | |
1771 | Fsetcdr (prev, XCDR (tail)); | |
1772 | } | |
1773 | else | |
1774 | prev = tail; | |
1775 | QUIT; | |
1776 | } | |
1777 | } | |
59f953a2 | 1778 | |
e517f19d | 1779 | return seq; |
1e134a5f RM |
1780 | } |
1781 | ||
7b863bd5 | 1782 | DEFUN ("nreverse", Fnreverse, Snreverse, 1, 1, 0, |
e9d8ddc9 MB |
1783 | doc: /* Reverse LIST by modifying cdr pointers. |
1784 | Returns the beginning of the reversed list. */) | |
1785 | (list) | |
7b863bd5 JB |
1786 | Lisp_Object list; |
1787 | { | |
1788 | register Lisp_Object prev, tail, next; | |
1789 | ||
265a9e55 | 1790 | if (NILP (list)) return list; |
7b863bd5 JB |
1791 | prev = Qnil; |
1792 | tail = list; | |
265a9e55 | 1793 | while (!NILP (tail)) |
7b863bd5 JB |
1794 | { |
1795 | QUIT; | |
71a8e74b DL |
1796 | if (! CONSP (tail)) |
1797 | wrong_type_argument (Qlistp, list); | |
1798 | next = XCDR (tail); | |
7b863bd5 JB |
1799 | Fsetcdr (tail, prev); |
1800 | prev = tail; | |
1801 | tail = next; | |
1802 | } | |
1803 | return prev; | |
1804 | } | |
1805 | ||
1806 | DEFUN ("reverse", Freverse, Sreverse, 1, 1, 0, | |
462a5e3a | 1807 | doc: /* Reverse LIST, copying. Returns the beginning of the reversed list. |
e9d8ddc9 MB |
1808 | See also the function `nreverse', which is used more often. */) |
1809 | (list) | |
7b863bd5 JB |
1810 | Lisp_Object list; |
1811 | { | |
9d14ae76 | 1812 | Lisp_Object new; |
7b863bd5 | 1813 | |
70949dac KR |
1814 | for (new = Qnil; CONSP (list); list = XCDR (list)) |
1815 | new = Fcons (XCAR (list), new); | |
9d14ae76 RS |
1816 | if (!NILP (list)) |
1817 | wrong_type_argument (Qconsp, list); | |
1818 | return new; | |
7b863bd5 JB |
1819 | } |
1820 | \f | |
1821 | Lisp_Object merge (); | |
1822 | ||
1823 | DEFUN ("sort", Fsort, Ssort, 2, 2, 0, | |
e9d8ddc9 | 1824 | doc: /* Sort LIST, stably, comparing elements using PREDICATE. |
47cebab1 GM |
1825 | Returns the sorted list. LIST is modified by side effects. |
1826 | PREDICATE is called with two elements of LIST, and should return t | |
e9d8ddc9 MB |
1827 | if the first element is "less" than the second. */) |
1828 | (list, predicate) | |
88fe8140 | 1829 | Lisp_Object list, predicate; |
7b863bd5 JB |
1830 | { |
1831 | Lisp_Object front, back; | |
1832 | register Lisp_Object len, tem; | |
1833 | struct gcpro gcpro1, gcpro2; | |
1834 | register int length; | |
1835 | ||
1836 | front = list; | |
1837 | len = Flength (list); | |
1838 | length = XINT (len); | |
1839 | if (length < 2) | |
1840 | return list; | |
1841 | ||
1842 | XSETINT (len, (length / 2) - 1); | |
1843 | tem = Fnthcdr (len, list); | |
1844 | back = Fcdr (tem); | |
1845 | Fsetcdr (tem, Qnil); | |
1846 | ||
1847 | GCPRO2 (front, back); | |
88fe8140 EN |
1848 | front = Fsort (front, predicate); |
1849 | back = Fsort (back, predicate); | |
7b863bd5 | 1850 | UNGCPRO; |
88fe8140 | 1851 | return merge (front, back, predicate); |
7b863bd5 JB |
1852 | } |
1853 | ||
1854 | Lisp_Object | |
1855 | merge (org_l1, org_l2, pred) | |
1856 | Lisp_Object org_l1, org_l2; | |
1857 | Lisp_Object pred; | |
1858 | { | |
1859 | Lisp_Object value; | |
1860 | register Lisp_Object tail; | |
1861 | Lisp_Object tem; | |
1862 | register Lisp_Object l1, l2; | |
1863 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
1864 | ||
1865 | l1 = org_l1; | |
1866 | l2 = org_l2; | |
1867 | tail = Qnil; | |
1868 | value = Qnil; | |
1869 | ||
1870 | /* It is sufficient to protect org_l1 and org_l2. | |
1871 | When l1 and l2 are updated, we copy the new values | |
1872 | back into the org_ vars. */ | |
1873 | GCPRO4 (org_l1, org_l2, pred, value); | |
1874 | ||
1875 | while (1) | |
1876 | { | |
265a9e55 | 1877 | if (NILP (l1)) |
7b863bd5 JB |
1878 | { |
1879 | UNGCPRO; | |
265a9e55 | 1880 | if (NILP (tail)) |
7b863bd5 JB |
1881 | return l2; |
1882 | Fsetcdr (tail, l2); | |
1883 | return value; | |
1884 | } | |
265a9e55 | 1885 | if (NILP (l2)) |
7b863bd5 JB |
1886 | { |
1887 | UNGCPRO; | |
265a9e55 | 1888 | if (NILP (tail)) |
7b863bd5 JB |
1889 | return l1; |
1890 | Fsetcdr (tail, l1); | |
1891 | return value; | |
1892 | } | |
1893 | tem = call2 (pred, Fcar (l2), Fcar (l1)); | |
265a9e55 | 1894 | if (NILP (tem)) |
7b863bd5 JB |
1895 | { |
1896 | tem = l1; | |
1897 | l1 = Fcdr (l1); | |
1898 | org_l1 = l1; | |
1899 | } | |
1900 | else | |
1901 | { | |
1902 | tem = l2; | |
1903 | l2 = Fcdr (l2); | |
1904 | org_l2 = l2; | |
1905 | } | |
265a9e55 | 1906 | if (NILP (tail)) |
7b863bd5 JB |
1907 | value = tem; |
1908 | else | |
1909 | Fsetcdr (tail, tem); | |
1910 | tail = tem; | |
1911 | } | |
1912 | } | |
be9d483d | 1913 | |
2d6fabfc | 1914 | \f |
be9d483d | 1915 | DEFUN ("plist-get", Fplist_get, Splist_get, 2, 2, 0, |
e9d8ddc9 | 1916 | doc: /* Extract a value from a property list. |
47cebab1 GM |
1917 | PLIST is a property list, which is a list of the form |
1918 | \(PROP1 VALUE1 PROP2 VALUE2...). This function returns the value | |
1919 | corresponding to the given PROP, or nil if PROP is not | |
e9d8ddc9 MB |
1920 | one of the properties on the list. */) |
1921 | (plist, prop) | |
1fbb64aa | 1922 | Lisp_Object plist; |
2d6fabfc | 1923 | Lisp_Object prop; |
7b863bd5 | 1924 | { |
2d6fabfc GM |
1925 | Lisp_Object tail; |
1926 | ||
1927 | for (tail = plist; | |
1928 | CONSP (tail) && CONSP (XCDR (tail)); | |
1929 | tail = XCDR (XCDR (tail))) | |
7b863bd5 | 1930 | { |
2d6fabfc GM |
1931 | if (EQ (prop, XCAR (tail))) |
1932 | return XCAR (XCDR (tail)); | |
ec2423c9 GM |
1933 | |
1934 | /* This function can be called asynchronously | |
1935 | (setup_coding_system). Don't QUIT in that case. */ | |
1936 | if (!interrupt_input_blocked) | |
1937 | QUIT; | |
7b863bd5 | 1938 | } |
2d6fabfc GM |
1939 | |
1940 | if (!NILP (tail)) | |
1941 | wrong_type_argument (Qlistp, prop); | |
1942 | ||
7b863bd5 JB |
1943 | return Qnil; |
1944 | } | |
1945 | ||
be9d483d | 1946 | DEFUN ("get", Fget, Sget, 2, 2, 0, |
e9d8ddc9 MB |
1947 | doc: /* Return the value of SYMBOL's PROPNAME property. |
1948 | This is the last value stored with `(put SYMBOL PROPNAME VALUE)'. */) | |
1949 | (symbol, propname) | |
c07289e0 | 1950 | Lisp_Object symbol, propname; |
be9d483d | 1951 | { |
b7826503 | 1952 | CHECK_SYMBOL (symbol); |
c07289e0 | 1953 | return Fplist_get (XSYMBOL (symbol)->plist, propname); |
be9d483d BG |
1954 | } |
1955 | ||
1956 | DEFUN ("plist-put", Fplist_put, Splist_put, 3, 3, 0, | |
e9d8ddc9 | 1957 | doc: /* Change value in PLIST of PROP to VAL. |
47cebab1 GM |
1958 | PLIST is a property list, which is a list of the form |
1959 | \(PROP1 VALUE1 PROP2 VALUE2 ...). PROP is a symbol and VAL is any object. | |
1960 | If PROP is already a property on the list, its value is set to VAL, | |
1961 | otherwise the new PROP VAL pair is added. The new plist is returned; | |
1962 | use `(setq x (plist-put x prop val))' to be sure to use the new value. | |
e9d8ddc9 MB |
1963 | The PLIST is modified by side effects. */) |
1964 | (plist, prop, val) | |
b4f334f7 KH |
1965 | Lisp_Object plist; |
1966 | register Lisp_Object prop; | |
1967 | Lisp_Object val; | |
7b863bd5 JB |
1968 | { |
1969 | register Lisp_Object tail, prev; | |
1970 | Lisp_Object newcell; | |
1971 | prev = Qnil; | |
70949dac KR |
1972 | for (tail = plist; CONSP (tail) && CONSP (XCDR (tail)); |
1973 | tail = XCDR (XCDR (tail))) | |
7b863bd5 | 1974 | { |
70949dac | 1975 | if (EQ (prop, XCAR (tail))) |
be9d483d | 1976 | { |
70949dac | 1977 | Fsetcar (XCDR (tail), val); |
be9d483d BG |
1978 | return plist; |
1979 | } | |
ec2423c9 | 1980 | |
7b863bd5 | 1981 | prev = tail; |
2d6fabfc | 1982 | QUIT; |
7b863bd5 JB |
1983 | } |
1984 | newcell = Fcons (prop, Fcons (val, Qnil)); | |
265a9e55 | 1985 | if (NILP (prev)) |
be9d483d | 1986 | return newcell; |
7b863bd5 | 1987 | else |
70949dac | 1988 | Fsetcdr (XCDR (prev), newcell); |
be9d483d BG |
1989 | return plist; |
1990 | } | |
1991 | ||
1992 | DEFUN ("put", Fput, Sput, 3, 3, 0, | |
e9d8ddc9 MB |
1993 | doc: /* Store SYMBOL's PROPNAME property with value VALUE. |
1994 | It can be retrieved with `(get SYMBOL PROPNAME)'. */) | |
1995 | (symbol, propname, value) | |
c07289e0 | 1996 | Lisp_Object symbol, propname, value; |
be9d483d | 1997 | { |
b7826503 | 1998 | CHECK_SYMBOL (symbol); |
c07289e0 RS |
1999 | XSYMBOL (symbol)->plist |
2000 | = Fplist_put (XSYMBOL (symbol)->plist, propname, value); | |
2001 | return value; | |
7b863bd5 | 2002 | } |
aebf4d42 RS |
2003 | \f |
2004 | DEFUN ("lax-plist-get", Flax_plist_get, Slax_plist_get, 2, 2, 0, | |
2005 | doc: /* Extract a value from a property list, comparing with `equal'. | |
2006 | PLIST is a property list, which is a list of the form | |
2007 | \(PROP1 VALUE1 PROP2 VALUE2...). This function returns the value | |
2008 | corresponding to the given PROP, or nil if PROP is not | |
2009 | one of the properties on the list. */) | |
2010 | (plist, prop) | |
2011 | Lisp_Object plist; | |
2012 | Lisp_Object prop; | |
2013 | { | |
2014 | Lisp_Object tail; | |
2015 | ||
2016 | for (tail = plist; | |
2017 | CONSP (tail) && CONSP (XCDR (tail)); | |
2018 | tail = XCDR (XCDR (tail))) | |
2019 | { | |
2020 | if (! NILP (Fequal (prop, XCAR (tail)))) | |
2021 | return XCAR (XCDR (tail)); | |
2022 | ||
2023 | QUIT; | |
2024 | } | |
2025 | ||
2026 | if (!NILP (tail)) | |
2027 | wrong_type_argument (Qlistp, prop); | |
2028 | ||
2029 | return Qnil; | |
2030 | } | |
7b863bd5 | 2031 | |
aebf4d42 RS |
2032 | DEFUN ("lax-plist-put", Flax_plist_put, Slax_plist_put, 3, 3, 0, |
2033 | doc: /* Change value in PLIST of PROP to VAL, comparing with `equal'. | |
2034 | PLIST is a property list, which is a list of the form | |
9e76ae05 | 2035 | \(PROP1 VALUE1 PROP2 VALUE2 ...). PROP and VAL are any objects. |
aebf4d42 RS |
2036 | If PROP is already a property on the list, its value is set to VAL, |
2037 | otherwise the new PROP VAL pair is added. The new plist is returned; | |
2038 | use `(setq x (lax-plist-put x prop val))' to be sure to use the new value. | |
2039 | The PLIST is modified by side effects. */) | |
2040 | (plist, prop, val) | |
2041 | Lisp_Object plist; | |
2042 | register Lisp_Object prop; | |
2043 | Lisp_Object val; | |
2044 | { | |
2045 | register Lisp_Object tail, prev; | |
2046 | Lisp_Object newcell; | |
2047 | prev = Qnil; | |
2048 | for (tail = plist; CONSP (tail) && CONSP (XCDR (tail)); | |
2049 | tail = XCDR (XCDR (tail))) | |
2050 | { | |
2051 | if (! NILP (Fequal (prop, XCAR (tail)))) | |
2052 | { | |
2053 | Fsetcar (XCDR (tail), val); | |
2054 | return plist; | |
2055 | } | |
2056 | ||
2057 | prev = tail; | |
2058 | QUIT; | |
2059 | } | |
2060 | newcell = Fcons (prop, Fcons (val, Qnil)); | |
2061 | if (NILP (prev)) | |
2062 | return newcell; | |
2063 | else | |
2064 | Fsetcdr (XCDR (prev), newcell); | |
2065 | return plist; | |
2066 | } | |
2067 | \f | |
7b863bd5 | 2068 | DEFUN ("equal", Fequal, Sequal, 2, 2, 0, |
e9d8ddc9 | 2069 | doc: /* Return t if two Lisp objects have similar structure and contents. |
47cebab1 GM |
2070 | They must have the same data type. |
2071 | Conses are compared by comparing the cars and the cdrs. | |
2072 | Vectors and strings are compared element by element. | |
2073 | Numbers are compared by value, but integers cannot equal floats. | |
2074 | (Use `=' if you want integers and floats to be able to be equal.) | |
e9d8ddc9 MB |
2075 | Symbols must match exactly. */) |
2076 | (o1, o2) | |
7b863bd5 JB |
2077 | register Lisp_Object o1, o2; |
2078 | { | |
6cb9cafb | 2079 | return internal_equal (o1, o2, 0) ? Qt : Qnil; |
e0f5cf5a RS |
2080 | } |
2081 | ||
6cb9cafb | 2082 | static int |
e0f5cf5a RS |
2083 | internal_equal (o1, o2, depth) |
2084 | register Lisp_Object o1, o2; | |
2085 | int depth; | |
2086 | { | |
2087 | if (depth > 200) | |
2088 | error ("Stack overflow in equal"); | |
4ff1aed9 | 2089 | |
6cb9cafb | 2090 | tail_recurse: |
7b863bd5 | 2091 | QUIT; |
4ff1aed9 RS |
2092 | if (EQ (o1, o2)) |
2093 | return 1; | |
2094 | if (XTYPE (o1) != XTYPE (o2)) | |
2095 | return 0; | |
2096 | ||
2097 | switch (XTYPE (o1)) | |
2098 | { | |
4ff1aed9 RS |
2099 | case Lisp_Float: |
2100 | return (extract_float (o1) == extract_float (o2)); | |
4ff1aed9 RS |
2101 | |
2102 | case Lisp_Cons: | |
70949dac | 2103 | if (!internal_equal (XCAR (o1), XCAR (o2), depth + 1)) |
4cab5074 | 2104 | return 0; |
70949dac KR |
2105 | o1 = XCDR (o1); |
2106 | o2 = XCDR (o2); | |
4cab5074 | 2107 | goto tail_recurse; |
4ff1aed9 RS |
2108 | |
2109 | case Lisp_Misc: | |
81d1fba6 | 2110 | if (XMISCTYPE (o1) != XMISCTYPE (o2)) |
6cb9cafb | 2111 | return 0; |
4ff1aed9 | 2112 | if (OVERLAYP (o1)) |
7b863bd5 | 2113 | { |
e23f814f | 2114 | if (!internal_equal (OVERLAY_START (o1), OVERLAY_START (o2), |
4ff1aed9 | 2115 | depth + 1) |
e23f814f | 2116 | || !internal_equal (OVERLAY_END (o1), OVERLAY_END (o2), |
4ff1aed9 | 2117 | depth + 1)) |
6cb9cafb | 2118 | return 0; |
4ff1aed9 RS |
2119 | o1 = XOVERLAY (o1)->plist; |
2120 | o2 = XOVERLAY (o2)->plist; | |
2121 | goto tail_recurse; | |
7b863bd5 | 2122 | } |
4ff1aed9 RS |
2123 | if (MARKERP (o1)) |
2124 | { | |
2125 | return (XMARKER (o1)->buffer == XMARKER (o2)->buffer | |
2126 | && (XMARKER (o1)->buffer == 0 | |
6ced1284 | 2127 | || XMARKER (o1)->bytepos == XMARKER (o2)->bytepos)); |
4ff1aed9 RS |
2128 | } |
2129 | break; | |
2130 | ||
2131 | case Lisp_Vectorlike: | |
4cab5074 KH |
2132 | { |
2133 | register int i, size; | |
2134 | size = XVECTOR (o1)->size; | |
2135 | /* Pseudovectors have the type encoded in the size field, so this test | |
2136 | actually checks that the objects have the same type as well as the | |
2137 | same size. */ | |
2138 | if (XVECTOR (o2)->size != size) | |
2139 | return 0; | |
e03f7933 RS |
2140 | /* Boolvectors are compared much like strings. */ |
2141 | if (BOOL_VECTOR_P (o1)) | |
2142 | { | |
e03f7933 | 2143 | int size_in_chars |
e22e4283 | 2144 | = (XBOOL_VECTOR (o1)->size + BITS_PER_CHAR - 1) / BITS_PER_CHAR; |
e03f7933 RS |
2145 | |
2146 | if (XBOOL_VECTOR (o1)->size != XBOOL_VECTOR (o2)->size) | |
2147 | return 0; | |
2148 | if (bcmp (XBOOL_VECTOR (o1)->data, XBOOL_VECTOR (o2)->data, | |
2149 | size_in_chars)) | |
2150 | return 0; | |
2151 | return 1; | |
2152 | } | |
ed73fcc1 | 2153 | if (WINDOW_CONFIGURATIONP (o1)) |
48646924 | 2154 | return compare_window_configurations (o1, o2, 0); |
e03f7933 RS |
2155 | |
2156 | /* Aside from them, only true vectors, char-tables, and compiled | |
2157 | functions are sensible to compare, so eliminate the others now. */ | |
4cab5074 KH |
2158 | if (size & PSEUDOVECTOR_FLAG) |
2159 | { | |
e03f7933 | 2160 | if (!(size & (PVEC_COMPILED | PVEC_CHAR_TABLE))) |
4cab5074 KH |
2161 | return 0; |
2162 | size &= PSEUDOVECTOR_SIZE_MASK; | |
2163 | } | |
2164 | for (i = 0; i < size; i++) | |
2165 | { | |
2166 | Lisp_Object v1, v2; | |
2167 | v1 = XVECTOR (o1)->contents [i]; | |
2168 | v2 = XVECTOR (o2)->contents [i]; | |
2169 | if (!internal_equal (v1, v2, depth + 1)) | |
2170 | return 0; | |
2171 | } | |
2172 | return 1; | |
2173 | } | |
4ff1aed9 RS |
2174 | break; |
2175 | ||
2176 | case Lisp_String: | |
4cab5074 KH |
2177 | if (XSTRING (o1)->size != XSTRING (o2)->size) |
2178 | return 0; | |
fc932ac6 | 2179 | if (STRING_BYTES (XSTRING (o1)) != STRING_BYTES (XSTRING (o2))) |
ea35ce3d | 2180 | return 0; |
4cab5074 | 2181 | if (bcmp (XSTRING (o1)->data, XSTRING (o2)->data, |
fc932ac6 | 2182 | STRING_BYTES (XSTRING (o1)))) |
4cab5074 | 2183 | return 0; |
4cab5074 | 2184 | return 1; |
093386ca GM |
2185 | |
2186 | case Lisp_Int: | |
2187 | case Lisp_Symbol: | |
2188 | case Lisp_Type_Limit: | |
2189 | break; | |
7b863bd5 | 2190 | } |
093386ca | 2191 | |
6cb9cafb | 2192 | return 0; |
7b863bd5 JB |
2193 | } |
2194 | \f | |
2e34157c RS |
2195 | extern Lisp_Object Fmake_char_internal (); |
2196 | ||
7b863bd5 | 2197 | DEFUN ("fillarray", Ffillarray, Sfillarray, 2, 2, 0, |
e9d8ddc9 MB |
2198 | doc: /* Store each element of ARRAY with ITEM. |
2199 | ARRAY is a vector, string, char-table, or bool-vector. */) | |
2200 | (array, item) | |
7b863bd5 JB |
2201 | Lisp_Object array, item; |
2202 | { | |
2203 | register int size, index, charval; | |
2204 | retry: | |
7650760e | 2205 | if (VECTORP (array)) |
7b863bd5 JB |
2206 | { |
2207 | register Lisp_Object *p = XVECTOR (array)->contents; | |
2208 | size = XVECTOR (array)->size; | |
2209 | for (index = 0; index < size; index++) | |
2210 | p[index] = item; | |
2211 | } | |
e03f7933 RS |
2212 | else if (CHAR_TABLE_P (array)) |
2213 | { | |
2214 | register Lisp_Object *p = XCHAR_TABLE (array)->contents; | |
2215 | size = CHAR_TABLE_ORDINARY_SLOTS; | |
2216 | for (index = 0; index < size; index++) | |
2217 | p[index] = item; | |
2218 | XCHAR_TABLE (array)->defalt = Qnil; | |
2219 | } | |
7650760e | 2220 | else if (STRINGP (array)) |
7b863bd5 JB |
2221 | { |
2222 | register unsigned char *p = XSTRING (array)->data; | |
b7826503 | 2223 | CHECK_NUMBER (item); |
7b863bd5 JB |
2224 | charval = XINT (item); |
2225 | size = XSTRING (array)->size; | |
57247650 KH |
2226 | if (STRING_MULTIBYTE (array)) |
2227 | { | |
64a5094a KH |
2228 | unsigned char str[MAX_MULTIBYTE_LENGTH]; |
2229 | int len = CHAR_STRING (charval, str); | |
57247650 KH |
2230 | int size_byte = STRING_BYTES (XSTRING (array)); |
2231 | unsigned char *p1 = p, *endp = p + size_byte; | |
95b8aba7 | 2232 | int i; |
57247650 | 2233 | |
95b8aba7 KH |
2234 | if (size != size_byte) |
2235 | while (p1 < endp) | |
2236 | { | |
2237 | int this_len = MULTIBYTE_FORM_LENGTH (p1, endp - p1); | |
2238 | if (len != this_len) | |
2239 | error ("Attempt to change byte length of a string"); | |
2240 | p1 += this_len; | |
2241 | } | |
57247650 KH |
2242 | for (i = 0; i < size_byte; i++) |
2243 | *p++ = str[i % len]; | |
2244 | } | |
2245 | else | |
2246 | for (index = 0; index < size; index++) | |
2247 | p[index] = charval; | |
7b863bd5 | 2248 | } |
e03f7933 RS |
2249 | else if (BOOL_VECTOR_P (array)) |
2250 | { | |
2251 | register unsigned char *p = XBOOL_VECTOR (array)->data; | |
e03f7933 | 2252 | int size_in_chars |
e22e4283 | 2253 | = (XBOOL_VECTOR (array)->size + BITS_PER_CHAR - 1) / BITS_PER_CHAR; |
e03f7933 RS |
2254 | |
2255 | charval = (! NILP (item) ? -1 : 0); | |
2256 | for (index = 0; index < size_in_chars; index++) | |
2257 | p[index] = charval; | |
2258 | } | |
7b863bd5 JB |
2259 | else |
2260 | { | |
2261 | array = wrong_type_argument (Qarrayp, array); | |
2262 | goto retry; | |
2263 | } | |
2264 | return array; | |
2265 | } | |
ea35ce3d | 2266 | \f |
999de246 RS |
2267 | DEFUN ("char-table-subtype", Fchar_table_subtype, Schar_table_subtype, |
2268 | 1, 1, 0, | |
e9d8ddc9 MB |
2269 | doc: /* Return the subtype of char-table CHAR-TABLE. The value is a symbol. */) |
2270 | (char_table) | |
88fe8140 | 2271 | Lisp_Object char_table; |
999de246 | 2272 | { |
b7826503 | 2273 | CHECK_CHAR_TABLE (char_table); |
999de246 | 2274 | |
88fe8140 | 2275 | return XCHAR_TABLE (char_table)->purpose; |
999de246 RS |
2276 | } |
2277 | ||
e03f7933 RS |
2278 | DEFUN ("char-table-parent", Fchar_table_parent, Schar_table_parent, |
2279 | 1, 1, 0, | |
e9d8ddc9 | 2280 | doc: /* Return the parent char-table of CHAR-TABLE. |
47cebab1 GM |
2281 | The value is either nil or another char-table. |
2282 | If CHAR-TABLE holds nil for a given character, | |
2283 | then the actual applicable value is inherited from the parent char-table | |
e9d8ddc9 MB |
2284 | \(or from its parents, if necessary). */) |
2285 | (char_table) | |
88fe8140 | 2286 | Lisp_Object char_table; |
e03f7933 | 2287 | { |
b7826503 | 2288 | CHECK_CHAR_TABLE (char_table); |
e03f7933 | 2289 | |
88fe8140 | 2290 | return XCHAR_TABLE (char_table)->parent; |
e03f7933 RS |
2291 | } |
2292 | ||
2293 | DEFUN ("set-char-table-parent", Fset_char_table_parent, Sset_char_table_parent, | |
2294 | 2, 2, 0, | |
e9d8ddc9 MB |
2295 | doc: /* Set the parent char-table of CHAR-TABLE to PARENT. |
2296 | PARENT must be either nil or another char-table. */) | |
2297 | (char_table, parent) | |
88fe8140 | 2298 | Lisp_Object char_table, parent; |
e03f7933 RS |
2299 | { |
2300 | Lisp_Object temp; | |
2301 | ||
b7826503 | 2302 | CHECK_CHAR_TABLE (char_table); |
e03f7933 | 2303 | |
c8640abf RS |
2304 | if (!NILP (parent)) |
2305 | { | |
b7826503 | 2306 | CHECK_CHAR_TABLE (parent); |
c8640abf RS |
2307 | |
2308 | for (temp = parent; !NILP (temp); temp = XCHAR_TABLE (temp)->parent) | |
55cc974d | 2309 | if (EQ (temp, char_table)) |
c8640abf RS |
2310 | error ("Attempt to make a chartable be its own parent"); |
2311 | } | |
e03f7933 | 2312 | |
88fe8140 | 2313 | XCHAR_TABLE (char_table)->parent = parent; |
e03f7933 RS |
2314 | |
2315 | return parent; | |
2316 | } | |
2317 | ||
2318 | DEFUN ("char-table-extra-slot", Fchar_table_extra_slot, Schar_table_extra_slot, | |
2319 | 2, 2, 0, | |
e9d8ddc9 MB |
2320 | doc: /* Return the value of CHAR-TABLE's extra-slot number N. */) |
2321 | (char_table, n) | |
88fe8140 | 2322 | Lisp_Object char_table, n; |
e03f7933 | 2323 | { |
b7826503 PJ |
2324 | CHECK_CHAR_TABLE (char_table); |
2325 | CHECK_NUMBER (n); | |
e03f7933 | 2326 | if (XINT (n) < 0 |
88fe8140 EN |
2327 | || XINT (n) >= CHAR_TABLE_EXTRA_SLOTS (XCHAR_TABLE (char_table))) |
2328 | args_out_of_range (char_table, n); | |
e03f7933 | 2329 | |
88fe8140 | 2330 | return XCHAR_TABLE (char_table)->extras[XINT (n)]; |
e03f7933 RS |
2331 | } |
2332 | ||
2333 | DEFUN ("set-char-table-extra-slot", Fset_char_table_extra_slot, | |
2334 | Sset_char_table_extra_slot, | |
2335 | 3, 3, 0, | |
e9d8ddc9 MB |
2336 | doc: /* Set CHAR-TABLE's extra-slot number N to VALUE. */) |
2337 | (char_table, n, value) | |
88fe8140 | 2338 | Lisp_Object char_table, n, value; |
e03f7933 | 2339 | { |
b7826503 PJ |
2340 | CHECK_CHAR_TABLE (char_table); |
2341 | CHECK_NUMBER (n); | |
e03f7933 | 2342 | if (XINT (n) < 0 |
88fe8140 EN |
2343 | || XINT (n) >= CHAR_TABLE_EXTRA_SLOTS (XCHAR_TABLE (char_table))) |
2344 | args_out_of_range (char_table, n); | |
e03f7933 | 2345 | |
88fe8140 | 2346 | return XCHAR_TABLE (char_table)->extras[XINT (n)] = value; |
e03f7933 | 2347 | } |
ea35ce3d | 2348 | \f |
999de246 RS |
2349 | DEFUN ("char-table-range", Fchar_table_range, Schar_table_range, |
2350 | 2, 2, 0, | |
e9d8ddc9 | 2351 | doc: /* Return the value in CHAR-TABLE for a range of characters RANGE. |
47cebab1 GM |
2352 | RANGE should be nil (for the default value) |
2353 | a vector which identifies a character set or a row of a character set, | |
e9d8ddc9 MB |
2354 | a character set name, or a character code. */) |
2355 | (char_table, range) | |
88fe8140 | 2356 | Lisp_Object char_table, range; |
999de246 | 2357 | { |
b7826503 | 2358 | CHECK_CHAR_TABLE (char_table); |
b4f334f7 | 2359 | |
999de246 | 2360 | if (EQ (range, Qnil)) |
88fe8140 | 2361 | return XCHAR_TABLE (char_table)->defalt; |
999de246 | 2362 | else if (INTEGERP (range)) |
88fe8140 | 2363 | return Faref (char_table, range); |
6d475204 RS |
2364 | else if (SYMBOLP (range)) |
2365 | { | |
2366 | Lisp_Object charset_info; | |
2367 | ||
2368 | charset_info = Fget (range, Qcharset); | |
b7826503 | 2369 | CHECK_VECTOR (charset_info); |
6d475204 | 2370 | |
21ab867f AS |
2371 | return Faref (char_table, |
2372 | make_number (XINT (XVECTOR (charset_info)->contents[0]) | |
2373 | + 128)); | |
6d475204 | 2374 | } |
999de246 RS |
2375 | else if (VECTORP (range)) |
2376 | { | |
e814a159 | 2377 | if (XVECTOR (range)->size == 1) |
21ab867f AS |
2378 | return Faref (char_table, |
2379 | make_number (XINT (XVECTOR (range)->contents[0]) + 128)); | |
e814a159 RS |
2380 | else |
2381 | { | |
2382 | int size = XVECTOR (range)->size; | |
2383 | Lisp_Object *val = XVECTOR (range)->contents; | |
2384 | Lisp_Object ch = Fmake_char_internal (size <= 0 ? Qnil : val[0], | |
2385 | size <= 1 ? Qnil : val[1], | |
2386 | size <= 2 ? Qnil : val[2]); | |
2387 | return Faref (char_table, ch); | |
2388 | } | |
999de246 RS |
2389 | } |
2390 | else | |
2391 | error ("Invalid RANGE argument to `char-table-range'"); | |
5c6740c9 | 2392 | return Qt; |
999de246 RS |
2393 | } |
2394 | ||
e03f7933 RS |
2395 | DEFUN ("set-char-table-range", Fset_char_table_range, Sset_char_table_range, |
2396 | 3, 3, 0, | |
e9d8ddc9 | 2397 | doc: /* Set the value in CHAR-TABLE for a range of characters RANGE to VALUE. |
47cebab1 GM |
2398 | RANGE should be t (for all characters), nil (for the default value) |
2399 | a vector which identifies a character set or a row of a character set, | |
e9d8ddc9 MB |
2400 | a coding system, or a character code. */) |
2401 | (char_table, range, value) | |
88fe8140 | 2402 | Lisp_Object char_table, range, value; |
e03f7933 RS |
2403 | { |
2404 | int i; | |
2405 | ||
b7826503 | 2406 | CHECK_CHAR_TABLE (char_table); |
b4f334f7 | 2407 | |
e03f7933 RS |
2408 | if (EQ (range, Qt)) |
2409 | for (i = 0; i < CHAR_TABLE_ORDINARY_SLOTS; i++) | |
88fe8140 | 2410 | XCHAR_TABLE (char_table)->contents[i] = value; |
e03f7933 | 2411 | else if (EQ (range, Qnil)) |
88fe8140 | 2412 | XCHAR_TABLE (char_table)->defalt = value; |
6d475204 RS |
2413 | else if (SYMBOLP (range)) |
2414 | { | |
2415 | Lisp_Object charset_info; | |
2416 | ||
2417 | charset_info = Fget (range, Qcharset); | |
b7826503 | 2418 | CHECK_VECTOR (charset_info); |
6d475204 | 2419 | |
21ab867f AS |
2420 | return Faset (char_table, |
2421 | make_number (XINT (XVECTOR (charset_info)->contents[0]) | |
2422 | + 128), | |
6d475204 RS |
2423 | value); |
2424 | } | |
e03f7933 | 2425 | else if (INTEGERP (range)) |
88fe8140 | 2426 | Faset (char_table, range, value); |
e03f7933 RS |
2427 | else if (VECTORP (range)) |
2428 | { | |
e814a159 | 2429 | if (XVECTOR (range)->size == 1) |
21ab867f AS |
2430 | return Faset (char_table, |
2431 | make_number (XINT (XVECTOR (range)->contents[0]) + 128), | |
2432 | value); | |
e814a159 RS |
2433 | else |
2434 | { | |
2435 | int size = XVECTOR (range)->size; | |
2436 | Lisp_Object *val = XVECTOR (range)->contents; | |
2437 | Lisp_Object ch = Fmake_char_internal (size <= 0 ? Qnil : val[0], | |
2438 | size <= 1 ? Qnil : val[1], | |
2439 | size <= 2 ? Qnil : val[2]); | |
2440 | return Faset (char_table, ch, value); | |
2441 | } | |
e03f7933 RS |
2442 | } |
2443 | else | |
2444 | error ("Invalid RANGE argument to `set-char-table-range'"); | |
2445 | ||
2446 | return value; | |
2447 | } | |
e1335ba2 KH |
2448 | |
2449 | DEFUN ("set-char-table-default", Fset_char_table_default, | |
2450 | Sset_char_table_default, 3, 3, 0, | |
e9d8ddc9 | 2451 | doc: /* Set the default value in CHAR-TABLE for a generic character CHAR to VALUE. |
47cebab1 | 2452 | The generic character specifies the group of characters. |
e9d8ddc9 MB |
2453 | See also the documentation of make-char. */) |
2454 | (char_table, ch, value) | |
e1335ba2 KH |
2455 | Lisp_Object char_table, ch, value; |
2456 | { | |
ada0fa14 | 2457 | int c, charset, code1, code2; |
e1335ba2 KH |
2458 | Lisp_Object temp; |
2459 | ||
b7826503 PJ |
2460 | CHECK_CHAR_TABLE (char_table); |
2461 | CHECK_NUMBER (ch); | |
e1335ba2 KH |
2462 | |
2463 | c = XINT (ch); | |
2db66414 | 2464 | SPLIT_CHAR (c, charset, code1, code2); |
0da528a9 KH |
2465 | |
2466 | /* Since we may want to set the default value for a character set | |
2467 | not yet defined, we check only if the character set is in the | |
2468 | valid range or not, instead of it is already defined or not. */ | |
2469 | if (! CHARSET_VALID_P (charset)) | |
f71599f4 | 2470 | invalid_character (c); |
e1335ba2 KH |
2471 | |
2472 | if (charset == CHARSET_ASCII) | |
2473 | return (XCHAR_TABLE (char_table)->defalt = value); | |
2474 | ||
2475 | /* Even if C is not a generic char, we had better behave as if a | |
2476 | generic char is specified. */ | |
c1fd9232 | 2477 | if (!CHARSET_DEFINED_P (charset) || CHARSET_DIMENSION (charset) == 1) |
e1335ba2 KH |
2478 | code1 = 0; |
2479 | temp = XCHAR_TABLE (char_table)->contents[charset + 128]; | |
2480 | if (!code1) | |
2481 | { | |
2482 | if (SUB_CHAR_TABLE_P (temp)) | |
2483 | XCHAR_TABLE (temp)->defalt = value; | |
2484 | else | |
2485 | XCHAR_TABLE (char_table)->contents[charset + 128] = value; | |
2486 | return value; | |
2487 | } | |
1e70fc65 KH |
2488 | if (SUB_CHAR_TABLE_P (temp)) |
2489 | char_table = temp; | |
2490 | else | |
e1335ba2 | 2491 | char_table = (XCHAR_TABLE (char_table)->contents[charset + 128] |
1e70fc65 | 2492 | = make_sub_char_table (temp)); |
e1335ba2 KH |
2493 | temp = XCHAR_TABLE (char_table)->contents[code1]; |
2494 | if (SUB_CHAR_TABLE_P (temp)) | |
2495 | XCHAR_TABLE (temp)->defalt = value; | |
2496 | else | |
2497 | XCHAR_TABLE (char_table)->contents[code1] = value; | |
2498 | return value; | |
2499 | } | |
1d969a23 RS |
2500 | |
2501 | /* Look up the element in TABLE at index CH, | |
2502 | and return it as an integer. | |
2503 | If the element is nil, return CH itself. | |
2504 | (Actually we do that for any non-integer.) */ | |
2505 | ||
2506 | int | |
2507 | char_table_translate (table, ch) | |
2508 | Lisp_Object table; | |
2509 | int ch; | |
2510 | { | |
2511 | Lisp_Object value; | |
2512 | value = Faref (table, make_number (ch)); | |
2513 | if (! INTEGERP (value)) | |
2514 | return ch; | |
2515 | return XINT (value); | |
2516 | } | |
52ef6c89 KH |
2517 | |
2518 | static void | |
2519 | optimize_sub_char_table (table, chars) | |
2520 | Lisp_Object *table; | |
2521 | int chars; | |
2522 | { | |
2523 | Lisp_Object elt; | |
2524 | int from, to; | |
2525 | ||
2526 | if (chars == 94) | |
2527 | from = 33, to = 127; | |
2528 | else | |
2529 | from = 32, to = 128; | |
2530 | ||
2531 | if (!SUB_CHAR_TABLE_P (*table)) | |
2532 | return; | |
2533 | elt = XCHAR_TABLE (*table)->contents[from++]; | |
2534 | for (; from < to; from++) | |
2535 | if (NILP (Fequal (elt, XCHAR_TABLE (*table)->contents[from]))) | |
2536 | return; | |
2537 | *table = elt; | |
2538 | } | |
2539 | ||
2540 | DEFUN ("optimize-char-table", Foptimize_char_table, Soptimize_char_table, | |
e9d8ddc9 MB |
2541 | 1, 1, 0, doc: /* Optimize char table TABLE. */) |
2542 | (table) | |
52ef6c89 KH |
2543 | Lisp_Object table; |
2544 | { | |
2545 | Lisp_Object elt; | |
2546 | int dim; | |
2547 | int i, j; | |
2548 | ||
b7826503 | 2549 | CHECK_CHAR_TABLE (table); |
52ef6c89 KH |
2550 | |
2551 | for (i = CHAR_TABLE_SINGLE_BYTE_SLOTS; i < CHAR_TABLE_ORDINARY_SLOTS; i++) | |
2552 | { | |
2553 | elt = XCHAR_TABLE (table)->contents[i]; | |
2554 | if (!SUB_CHAR_TABLE_P (elt)) | |
2555 | continue; | |
4a8009a0 | 2556 | dim = CHARSET_DIMENSION (i - 128); |
52ef6c89 KH |
2557 | if (dim == 2) |
2558 | for (j = 32; j < SUB_CHAR_TABLE_ORDINARY_SLOTS; j++) | |
2559 | optimize_sub_char_table (XCHAR_TABLE (elt)->contents + j, dim); | |
2560 | optimize_sub_char_table (XCHAR_TABLE (table)->contents + i, dim); | |
2561 | } | |
2562 | return Qnil; | |
2563 | } | |
2564 | ||
e03f7933 | 2565 | \f |
46ed603f | 2566 | /* Map C_FUNCTION or FUNCTION over SUBTABLE, calling it for each |
c8640abf RS |
2567 | character or group of characters that share a value. |
2568 | DEPTH is the current depth in the originally specified | |
2569 | chartable, and INDICES contains the vector indices | |
46ed603f RS |
2570 | for the levels our callers have descended. |
2571 | ||
2572 | ARG is passed to C_FUNCTION when that is called. */ | |
c8640abf RS |
2573 | |
2574 | void | |
46ed603f | 2575 | map_char_table (c_function, function, subtable, arg, depth, indices) |
22e6f12b AS |
2576 | void (*c_function) P_ ((Lisp_Object, Lisp_Object, Lisp_Object)); |
2577 | Lisp_Object function, subtable, arg, *indices; | |
1847b19b | 2578 | int depth; |
e03f7933 | 2579 | { |
3720677d | 2580 | int i, to; |
e03f7933 | 2581 | |
a8283a4a | 2582 | if (depth == 0) |
3720677d KH |
2583 | { |
2584 | /* At first, handle ASCII and 8-bit European characters. */ | |
2585 | for (i = 0; i < CHAR_TABLE_SINGLE_BYTE_SLOTS; i++) | |
2586 | { | |
46ed603f | 2587 | Lisp_Object elt = XCHAR_TABLE (subtable)->contents[i]; |
3720677d | 2588 | if (c_function) |
46ed603f | 2589 | (*c_function) (arg, make_number (i), elt); |
3720677d KH |
2590 | else |
2591 | call2 (function, make_number (i), elt); | |
2592 | } | |
ea35ce3d RS |
2593 | #if 0 /* If the char table has entries for higher characters, |
2594 | we should report them. */ | |
de86fcba KH |
2595 | if (NILP (current_buffer->enable_multibyte_characters)) |
2596 | return; | |
ea35ce3d | 2597 | #endif |
3720677d KH |
2598 | to = CHAR_TABLE_ORDINARY_SLOTS; |
2599 | } | |
a8283a4a | 2600 | else |
e03f7933 | 2601 | { |
a3b210c4 KH |
2602 | int charset = XFASTINT (indices[0]) - 128; |
2603 | ||
de86fcba | 2604 | i = 32; |
3720677d | 2605 | to = SUB_CHAR_TABLE_ORDINARY_SLOTS; |
a3b210c4 KH |
2606 | if (CHARSET_CHARS (charset) == 94) |
2607 | i++, to--; | |
e03f7933 RS |
2608 | } |
2609 | ||
7e798f25 | 2610 | for (; i < to; i++) |
e03f7933 | 2611 | { |
a3b210c4 KH |
2612 | Lisp_Object elt; |
2613 | int charset; | |
3720677d | 2614 | |
a3b210c4 | 2615 | elt = XCHAR_TABLE (subtable)->contents[i]; |
09ee221d | 2616 | XSETFASTINT (indices[depth], i); |
a3b210c4 | 2617 | charset = XFASTINT (indices[0]) - 128; |
df2fbceb KH |
2618 | if (depth == 0 |
2619 | && (!CHARSET_DEFINED_P (charset) | |
2620 | || charset == CHARSET_8_BIT_CONTROL | |
2621 | || charset == CHARSET_8_BIT_GRAPHIC)) | |
a3b210c4 | 2622 | continue; |
3720677d KH |
2623 | |
2624 | if (SUB_CHAR_TABLE_P (elt)) | |
2625 | { | |
2626 | if (depth >= 3) | |
2627 | error ("Too deep char table"); | |
7e798f25 | 2628 | map_char_table (c_function, function, elt, arg, depth + 1, indices); |
3720677d | 2629 | } |
e03f7933 | 2630 | else |
a8283a4a | 2631 | { |
a3b210c4 | 2632 | int c1, c2, c; |
3720677d | 2633 | |
a3b210c4 KH |
2634 | if (NILP (elt)) |
2635 | elt = XCHAR_TABLE (subtable)->defalt; | |
2636 | c1 = depth >= 1 ? XFASTINT (indices[1]) : 0; | |
2637 | c2 = depth >= 2 ? XFASTINT (indices[2]) : 0; | |
2efdd1b9 | 2638 | c = MAKE_CHAR (charset, c1, c2); |
a3b210c4 KH |
2639 | if (c_function) |
2640 | (*c_function) (arg, make_number (c), elt); | |
2641 | else | |
2642 | call2 (function, make_number (c), elt); | |
b4f334f7 | 2643 | } |
e03f7933 RS |
2644 | } |
2645 | } | |
2646 | ||
2647 | DEFUN ("map-char-table", Fmap_char_table, Smap_char_table, | |
47cebab1 | 2648 | 2, 2, 0, |
e9d8ddc9 | 2649 | doc: /* Call FUNCTION for each (normal and generic) characters in CHAR-TABLE. |
47cebab1 | 2650 | FUNCTION is called with two arguments--a key and a value. |
e9d8ddc9 MB |
2651 | The key is always a possible IDX argument to `aref'. */) |
2652 | (function, char_table) | |
88fe8140 | 2653 | Lisp_Object function, char_table; |
e03f7933 | 2654 | { |
3720677d | 2655 | /* The depth of char table is at most 3. */ |
7e798f25 KH |
2656 | Lisp_Object indices[3]; |
2657 | ||
b7826503 | 2658 | CHECK_CHAR_TABLE (char_table); |
e03f7933 | 2659 | |
46ed603f | 2660 | map_char_table (NULL, function, char_table, char_table, 0, indices); |
e03f7933 RS |
2661 | return Qnil; |
2662 | } | |
2f729392 KH |
2663 | |
2664 | /* Return a value for character C in char-table TABLE. Store the | |
2665 | actual index for that value in *IDX. Ignore the default value of | |
2666 | TABLE. */ | |
2667 | ||
2668 | Lisp_Object | |
2669 | char_table_ref_and_index (table, c, idx) | |
2670 | Lisp_Object table; | |
2671 | int c, *idx; | |
2672 | { | |
2673 | int charset, c1, c2; | |
2674 | Lisp_Object elt; | |
2675 | ||
2676 | if (SINGLE_BYTE_CHAR_P (c)) | |
2677 | { | |
2678 | *idx = c; | |
2679 | return XCHAR_TABLE (table)->contents[c]; | |
2680 | } | |
2681 | SPLIT_CHAR (c, charset, c1, c2); | |
2682 | elt = XCHAR_TABLE (table)->contents[charset + 128]; | |
2683 | *idx = MAKE_CHAR (charset, 0, 0); | |
2684 | if (!SUB_CHAR_TABLE_P (elt)) | |
2685 | return elt; | |
2686 | if (c1 < 32 || NILP (XCHAR_TABLE (elt)->contents[c1])) | |
2687 | return XCHAR_TABLE (elt)->defalt; | |
2688 | elt = XCHAR_TABLE (elt)->contents[c1]; | |
2689 | *idx = MAKE_CHAR (charset, c1, 0); | |
2690 | if (!SUB_CHAR_TABLE_P (elt)) | |
2691 | return elt; | |
2692 | if (c2 < 32 || NILP (XCHAR_TABLE (elt)->contents[c2])) | |
2693 | return XCHAR_TABLE (elt)->defalt; | |
2694 | *idx = c; | |
2695 | return XCHAR_TABLE (elt)->contents[c2]; | |
2696 | } | |
2697 | ||
e03f7933 | 2698 | \f |
7b863bd5 JB |
2699 | /* ARGSUSED */ |
2700 | Lisp_Object | |
2701 | nconc2 (s1, s2) | |
2702 | Lisp_Object s1, s2; | |
2703 | { | |
2704 | #ifdef NO_ARG_ARRAY | |
2705 | Lisp_Object args[2]; | |
2706 | args[0] = s1; | |
2707 | args[1] = s2; | |
2708 | return Fnconc (2, args); | |
2709 | #else | |
2710 | return Fnconc (2, &s1); | |
2711 | #endif /* NO_ARG_ARRAY */ | |
2712 | } | |
2713 | ||
2714 | DEFUN ("nconc", Fnconc, Snconc, 0, MANY, 0, | |
e9d8ddc9 | 2715 | doc: /* Concatenate any number of lists by altering them. |
4bf8e2a3 MB |
2716 | Only the last argument is not altered, and need not be a list. |
2717 | usage: (nconc &rest LISTS) */) | |
e9d8ddc9 | 2718 | (nargs, args) |
7b863bd5 JB |
2719 | int nargs; |
2720 | Lisp_Object *args; | |
2721 | { | |
2722 | register int argnum; | |
2723 | register Lisp_Object tail, tem, val; | |
2724 | ||
093386ca | 2725 | val = tail = Qnil; |
7b863bd5 JB |
2726 | |
2727 | for (argnum = 0; argnum < nargs; argnum++) | |
2728 | { | |
2729 | tem = args[argnum]; | |
265a9e55 | 2730 | if (NILP (tem)) continue; |
7b863bd5 | 2731 | |
265a9e55 | 2732 | if (NILP (val)) |
7b863bd5 JB |
2733 | val = tem; |
2734 | ||
2735 | if (argnum + 1 == nargs) break; | |
2736 | ||
2737 | if (!CONSP (tem)) | |
2738 | tem = wrong_type_argument (Qlistp, tem); | |
2739 | ||
2740 | while (CONSP (tem)) | |
2741 | { | |
2742 | tail = tem; | |
2743 | tem = Fcdr (tail); | |
2744 | QUIT; | |
2745 | } | |
2746 | ||
2747 | tem = args[argnum + 1]; | |
2748 | Fsetcdr (tail, tem); | |
265a9e55 | 2749 | if (NILP (tem)) |
7b863bd5 JB |
2750 | args[argnum + 1] = tail; |
2751 | } | |
2752 | ||
2753 | return val; | |
2754 | } | |
2755 | \f | |
2756 | /* This is the guts of all mapping functions. | |
ea35ce3d RS |
2757 | Apply FN to each element of SEQ, one by one, |
2758 | storing the results into elements of VALS, a C vector of Lisp_Objects. | |
2759 | LENI is the length of VALS, which should also be the length of SEQ. */ | |
7b863bd5 JB |
2760 | |
2761 | static void | |
2762 | mapcar1 (leni, vals, fn, seq) | |
2763 | int leni; | |
2764 | Lisp_Object *vals; | |
2765 | Lisp_Object fn, seq; | |
2766 | { | |
2767 | register Lisp_Object tail; | |
2768 | Lisp_Object dummy; | |
2769 | register int i; | |
2770 | struct gcpro gcpro1, gcpro2, gcpro3; | |
2771 | ||
f5c75033 DL |
2772 | if (vals) |
2773 | { | |
2774 | /* Don't let vals contain any garbage when GC happens. */ | |
2775 | for (i = 0; i < leni; i++) | |
2776 | vals[i] = Qnil; | |
7b863bd5 | 2777 | |
f5c75033 DL |
2778 | GCPRO3 (dummy, fn, seq); |
2779 | gcpro1.var = vals; | |
2780 | gcpro1.nvars = leni; | |
2781 | } | |
2782 | else | |
2783 | GCPRO2 (fn, seq); | |
7b863bd5 JB |
2784 | /* We need not explicitly protect `tail' because it is used only on lists, and |
2785 | 1) lists are not relocated and 2) the list is marked via `seq' so will not be freed */ | |
2786 | ||
7650760e | 2787 | if (VECTORP (seq)) |
7b863bd5 JB |
2788 | { |
2789 | for (i = 0; i < leni; i++) | |
2790 | { | |
2791 | dummy = XVECTOR (seq)->contents[i]; | |
f5c75033 DL |
2792 | dummy = call1 (fn, dummy); |
2793 | if (vals) | |
2794 | vals[i] = dummy; | |
7b863bd5 JB |
2795 | } |
2796 | } | |
33aa0881 KH |
2797 | else if (BOOL_VECTOR_P (seq)) |
2798 | { | |
2799 | for (i = 0; i < leni; i++) | |
2800 | { | |
2801 | int byte; | |
2802 | byte = XBOOL_VECTOR (seq)->data[i / BITS_PER_CHAR]; | |
2803 | if (byte & (1 << (i % BITS_PER_CHAR))) | |
2804 | dummy = Qt; | |
2805 | else | |
2806 | dummy = Qnil; | |
2807 | ||
f5c75033 DL |
2808 | dummy = call1 (fn, dummy); |
2809 | if (vals) | |
2810 | vals[i] = dummy; | |
33aa0881 KH |
2811 | } |
2812 | } | |
ea35ce3d RS |
2813 | else if (STRINGP (seq)) |
2814 | { | |
ea35ce3d RS |
2815 | int i_byte; |
2816 | ||
2817 | for (i = 0, i_byte = 0; i < leni;) | |
2818 | { | |
2819 | int c; | |
0ab6a3d8 KH |
2820 | int i_before = i; |
2821 | ||
2822 | FETCH_STRING_CHAR_ADVANCE (c, seq, i, i_byte); | |
ea35ce3d | 2823 | XSETFASTINT (dummy, c); |
f5c75033 DL |
2824 | dummy = call1 (fn, dummy); |
2825 | if (vals) | |
2826 | vals[i_before] = dummy; | |
ea35ce3d RS |
2827 | } |
2828 | } | |
7b863bd5 JB |
2829 | else /* Must be a list, since Flength did not get an error */ |
2830 | { | |
2831 | tail = seq; | |
2832 | for (i = 0; i < leni; i++) | |
2833 | { | |
f5c75033 DL |
2834 | dummy = call1 (fn, Fcar (tail)); |
2835 | if (vals) | |
2836 | vals[i] = dummy; | |
70949dac | 2837 | tail = XCDR (tail); |
7b863bd5 JB |
2838 | } |
2839 | } | |
2840 | ||
2841 | UNGCPRO; | |
2842 | } | |
2843 | ||
2844 | DEFUN ("mapconcat", Fmapconcat, Smapconcat, 3, 3, 0, | |
e9d8ddc9 | 2845 | doc: /* Apply FUNCTION to each element of SEQUENCE, and concat the results as strings. |
dd8d1e71 | 2846 | In between each pair of results, stick in SEPARATOR. Thus, " " as |
47cebab1 | 2847 | SEPARATOR results in spaces between the values returned by FUNCTION. |
e9d8ddc9 MB |
2848 | SEQUENCE may be a list, a vector, a bool-vector, or a string. */) |
2849 | (function, sequence, separator) | |
88fe8140 | 2850 | Lisp_Object function, sequence, separator; |
7b863bd5 JB |
2851 | { |
2852 | Lisp_Object len; | |
2853 | register int leni; | |
2854 | int nargs; | |
2855 | register Lisp_Object *args; | |
2856 | register int i; | |
2857 | struct gcpro gcpro1; | |
2858 | ||
88fe8140 | 2859 | len = Flength (sequence); |
7b863bd5 JB |
2860 | leni = XINT (len); |
2861 | nargs = leni + leni - 1; | |
2862 | if (nargs < 0) return build_string (""); | |
2863 | ||
2864 | args = (Lisp_Object *) alloca (nargs * sizeof (Lisp_Object)); | |
2865 | ||
88fe8140 EN |
2866 | GCPRO1 (separator); |
2867 | mapcar1 (leni, args, function, sequence); | |
7b863bd5 JB |
2868 | UNGCPRO; |
2869 | ||
2870 | for (i = leni - 1; i >= 0; i--) | |
2871 | args[i + i] = args[i]; | |
b4f334f7 | 2872 | |
7b863bd5 | 2873 | for (i = 1; i < nargs; i += 2) |
88fe8140 | 2874 | args[i] = separator; |
7b863bd5 JB |
2875 | |
2876 | return Fconcat (nargs, args); | |
2877 | } | |
2878 | ||
2879 | DEFUN ("mapcar", Fmapcar, Smapcar, 2, 2, 0, | |
e9d8ddc9 | 2880 | doc: /* Apply FUNCTION to each element of SEQUENCE, and make a list of the results. |
47cebab1 | 2881 | The result is a list just as long as SEQUENCE. |
e9d8ddc9 MB |
2882 | SEQUENCE may be a list, a vector, a bool-vector, or a string. */) |
2883 | (function, sequence) | |
88fe8140 | 2884 | Lisp_Object function, sequence; |
7b863bd5 JB |
2885 | { |
2886 | register Lisp_Object len; | |
2887 | register int leni; | |
2888 | register Lisp_Object *args; | |
2889 | ||
88fe8140 | 2890 | len = Flength (sequence); |
7b863bd5 JB |
2891 | leni = XFASTINT (len); |
2892 | args = (Lisp_Object *) alloca (leni * sizeof (Lisp_Object)); | |
2893 | ||
88fe8140 | 2894 | mapcar1 (leni, args, function, sequence); |
7b863bd5 JB |
2895 | |
2896 | return Flist (leni, args); | |
2897 | } | |
f5c75033 DL |
2898 | |
2899 | DEFUN ("mapc", Fmapc, Smapc, 2, 2, 0, | |
e9d8ddc9 | 2900 | doc: /* Apply FUNCTION to each element of SEQUENCE for side effects only. |
47cebab1 | 2901 | Unlike `mapcar', don't accumulate the results. Return SEQUENCE. |
e9d8ddc9 MB |
2902 | SEQUENCE may be a list, a vector, a bool-vector, or a string. */) |
2903 | (function, sequence) | |
f5c75033 DL |
2904 | Lisp_Object function, sequence; |
2905 | { | |
2906 | register int leni; | |
2907 | ||
2908 | leni = XFASTINT (Flength (sequence)); | |
2909 | mapcar1 (leni, 0, function, sequence); | |
2910 | ||
2911 | return sequence; | |
2912 | } | |
7b863bd5 JB |
2913 | \f |
2914 | /* Anything that calls this function must protect from GC! */ | |
2915 | ||
2916 | DEFUN ("y-or-n-p", Fy_or_n_p, Sy_or_n_p, 1, 1, 0, | |
e9d8ddc9 | 2917 | doc: /* Ask user a "y or n" question. Return t if answer is "y". |
47cebab1 GM |
2918 | Takes one argument, which is the string to display to ask the question. |
2919 | It should end in a space; `y-or-n-p' adds `(y or n) ' to it. | |
2920 | No confirmation of the answer is requested; a single character is enough. | |
2921 | Also accepts Space to mean yes, or Delete to mean no. \(Actually, it uses | |
2922 | the bindings in `query-replace-map'; see the documentation of that variable | |
2923 | for more information. In this case, the useful bindings are `act', `skip', | |
2924 | `recenter', and `quit'.\) | |
2925 | ||
2926 | Under a windowing system a dialog box will be used if `last-nonmenu-event' | |
e9d8ddc9 MB |
2927 | is nil and `use-dialog-box' is non-nil. */) |
2928 | (prompt) | |
7b863bd5 JB |
2929 | Lisp_Object prompt; |
2930 | { | |
2b8503ea | 2931 | register Lisp_Object obj, key, def, map; |
f5313ed9 | 2932 | register int answer; |
7b863bd5 JB |
2933 | Lisp_Object xprompt; |
2934 | Lisp_Object args[2]; | |
7b863bd5 | 2935 | struct gcpro gcpro1, gcpro2; |
eb4ffa4e RS |
2936 | int count = specpdl_ptr - specpdl; |
2937 | ||
2938 | specbind (Qcursor_in_echo_area, Qt); | |
7b863bd5 | 2939 | |
f5313ed9 RS |
2940 | map = Fsymbol_value (intern ("query-replace-map")); |
2941 | ||
b7826503 | 2942 | CHECK_STRING (prompt); |
7b863bd5 JB |
2943 | xprompt = prompt; |
2944 | GCPRO2 (prompt, xprompt); | |
2945 | ||
eff95916 | 2946 | #ifdef HAVE_X_WINDOWS |
df6c90d8 GM |
2947 | if (display_hourglass_p) |
2948 | cancel_hourglass (); | |
eff95916 | 2949 | #endif |
59f953a2 | 2950 | |
7b863bd5 JB |
2951 | while (1) |
2952 | { | |
eb4ffa4e | 2953 | |
0ef68e8a | 2954 | #ifdef HAVE_MENUS |
588064ce | 2955 | if ((NILP (last_nonmenu_event) || CONSP (last_nonmenu_event)) |
bdd8d692 | 2956 | && use_dialog_box |
0ef68e8a | 2957 | && have_menus_p ()) |
1db4cfb2 RS |
2958 | { |
2959 | Lisp_Object pane, menu; | |
3007ebfb | 2960 | redisplay_preserve_echo_area (3); |
1db4cfb2 RS |
2961 | pane = Fcons (Fcons (build_string ("Yes"), Qt), |
2962 | Fcons (Fcons (build_string ("No"), Qnil), | |
2963 | Qnil)); | |
ec26e1b9 | 2964 | menu = Fcons (prompt, pane); |
d2f28f78 | 2965 | obj = Fx_popup_dialog (Qt, menu); |
1db4cfb2 RS |
2966 | answer = !NILP (obj); |
2967 | break; | |
2968 | } | |
0ef68e8a | 2969 | #endif /* HAVE_MENUS */ |
dfa89228 | 2970 | cursor_in_echo_area = 1; |
b312cc52 | 2971 | choose_minibuf_frame (); |
927be332 PJ |
2972 | |
2973 | { | |
2974 | Lisp_Object pargs[3]; | |
2975 | ||
bcb31b2a | 2976 | /* Colorize prompt according to `minibuffer-prompt' face. */ |
927be332 PJ |
2977 | pargs[0] = build_string ("%s(y or n) "); |
2978 | pargs[1] = intern ("face"); | |
2979 | pargs[2] = intern ("minibuffer-prompt"); | |
2980 | args[0] = Fpropertize (3, pargs); | |
2981 | args[1] = xprompt; | |
2982 | Fmessage (2, args); | |
2983 | } | |
7b863bd5 | 2984 | |
2d8e7e1f RS |
2985 | if (minibuffer_auto_raise) |
2986 | { | |
2987 | Lisp_Object mini_frame; | |
2988 | ||
2989 | mini_frame = WINDOW_FRAME (XWINDOW (minibuf_window)); | |
2990 | ||
2991 | Fraise_frame (mini_frame); | |
2992 | } | |
2993 | ||
7ba13c57 | 2994 | obj = read_filtered_event (1, 0, 0, 0); |
dfa89228 KH |
2995 | cursor_in_echo_area = 0; |
2996 | /* If we need to quit, quit with cursor_in_echo_area = 0. */ | |
2997 | QUIT; | |
a63f658b | 2998 | |
f5313ed9 | 2999 | key = Fmake_vector (make_number (1), obj); |
aad2a123 | 3000 | def = Flookup_key (map, key, Qt); |
7b863bd5 | 3001 | |
f5313ed9 RS |
3002 | if (EQ (def, intern ("skip"))) |
3003 | { | |
3004 | answer = 0; | |
3005 | break; | |
3006 | } | |
3007 | else if (EQ (def, intern ("act"))) | |
3008 | { | |
3009 | answer = 1; | |
3010 | break; | |
3011 | } | |
29944b73 RS |
3012 | else if (EQ (def, intern ("recenter"))) |
3013 | { | |
3014 | Frecenter (Qnil); | |
3015 | xprompt = prompt; | |
3016 | continue; | |
3017 | } | |
f5313ed9 | 3018 | else if (EQ (def, intern ("quit"))) |
7b863bd5 | 3019 | Vquit_flag = Qt; |
ec63af1b RS |
3020 | /* We want to exit this command for exit-prefix, |
3021 | and this is the only way to do it. */ | |
3022 | else if (EQ (def, intern ("exit-prefix"))) | |
3023 | Vquit_flag = Qt; | |
f5313ed9 | 3024 | |
7b863bd5 | 3025 | QUIT; |
20aa96aa JB |
3026 | |
3027 | /* If we don't clear this, then the next call to read_char will | |
3028 | return quit_char again, and we'll enter an infinite loop. */ | |
088880f1 | 3029 | Vquit_flag = Qnil; |
7b863bd5 JB |
3030 | |
3031 | Fding (Qnil); | |
3032 | Fdiscard_input (); | |
3033 | if (EQ (xprompt, prompt)) | |
3034 | { | |
3035 | args[0] = build_string ("Please answer y or n. "); | |
3036 | args[1] = prompt; | |
3037 | xprompt = Fconcat (2, args); | |
3038 | } | |
3039 | } | |
3040 | UNGCPRO; | |
6a8a9750 | 3041 | |
09c95874 RS |
3042 | if (! noninteractive) |
3043 | { | |
3044 | cursor_in_echo_area = -1; | |
ea35ce3d RS |
3045 | message_with_string (answer ? "%s(y or n) y" : "%s(y or n) n", |
3046 | xprompt, 0); | |
09c95874 | 3047 | } |
6a8a9750 | 3048 | |
eb4ffa4e | 3049 | unbind_to (count, Qnil); |
f5313ed9 | 3050 | return answer ? Qt : Qnil; |
7b863bd5 JB |
3051 | } |
3052 | \f | |
3053 | /* This is how C code calls `yes-or-no-p' and allows the user | |
3054 | to redefined it. | |
3055 | ||
3056 | Anything that calls this function must protect from GC! */ | |
3057 | ||
3058 | Lisp_Object | |
3059 | do_yes_or_no_p (prompt) | |
3060 | Lisp_Object prompt; | |
3061 | { | |
3062 | return call1 (intern ("yes-or-no-p"), prompt); | |
3063 | } | |
3064 | ||
3065 | /* Anything that calls this function must protect from GC! */ | |
3066 | ||
3067 | DEFUN ("yes-or-no-p", Fyes_or_no_p, Syes_or_no_p, 1, 1, 0, | |
e9d8ddc9 | 3068 | doc: /* Ask user a yes-or-no question. Return t if answer is yes. |
47cebab1 GM |
3069 | Takes one argument, which is the string to display to ask the question. |
3070 | It should end in a space; `yes-or-no-p' adds `(yes or no) ' to it. | |
3071 | The user must confirm the answer with RET, | |
3072 | and can edit it until it has been confirmed. | |
3073 | ||
3074 | Under a windowing system a dialog box will be used if `last-nonmenu-event' | |
e9d8ddc9 MB |
3075 | is nil, and `use-dialog-box' is non-nil. */) |
3076 | (prompt) | |
7b863bd5 JB |
3077 | Lisp_Object prompt; |
3078 | { | |
3079 | register Lisp_Object ans; | |
3080 | Lisp_Object args[2]; | |
3081 | struct gcpro gcpro1; | |
3082 | ||
b7826503 | 3083 | CHECK_STRING (prompt); |
7b863bd5 | 3084 | |
0ef68e8a | 3085 | #ifdef HAVE_MENUS |
b4f334f7 | 3086 | if ((NILP (last_nonmenu_event) || CONSP (last_nonmenu_event)) |
bdd8d692 | 3087 | && use_dialog_box |
0ef68e8a | 3088 | && have_menus_p ()) |
1db4cfb2 RS |
3089 | { |
3090 | Lisp_Object pane, menu, obj; | |
3007ebfb | 3091 | redisplay_preserve_echo_area (4); |
1db4cfb2 RS |
3092 | pane = Fcons (Fcons (build_string ("Yes"), Qt), |
3093 | Fcons (Fcons (build_string ("No"), Qnil), | |
3094 | Qnil)); | |
3095 | GCPRO1 (pane); | |
ec26e1b9 | 3096 | menu = Fcons (prompt, pane); |
b5ccb0a9 | 3097 | obj = Fx_popup_dialog (Qt, menu); |
1db4cfb2 RS |
3098 | UNGCPRO; |
3099 | return obj; | |
3100 | } | |
0ef68e8a | 3101 | #endif /* HAVE_MENUS */ |
1db4cfb2 | 3102 | |
7b863bd5 JB |
3103 | args[0] = prompt; |
3104 | args[1] = build_string ("(yes or no) "); | |
3105 | prompt = Fconcat (2, args); | |
3106 | ||
3107 | GCPRO1 (prompt); | |
1db4cfb2 | 3108 | |
7b863bd5 JB |
3109 | while (1) |
3110 | { | |
0ce830bc | 3111 | ans = Fdowncase (Fread_from_minibuffer (prompt, Qnil, Qnil, Qnil, |
b24014d4 KH |
3112 | Qyes_or_no_p_history, Qnil, |
3113 | Qnil)); | |
7b863bd5 JB |
3114 | if (XSTRING (ans)->size == 3 && !strcmp (XSTRING (ans)->data, "yes")) |
3115 | { | |
3116 | UNGCPRO; | |
3117 | return Qt; | |
3118 | } | |
3119 | if (XSTRING (ans)->size == 2 && !strcmp (XSTRING (ans)->data, "no")) | |
3120 | { | |
3121 | UNGCPRO; | |
3122 | return Qnil; | |
3123 | } | |
3124 | ||
3125 | Fding (Qnil); | |
3126 | Fdiscard_input (); | |
3127 | message ("Please answer yes or no."); | |
99dc4745 | 3128 | Fsleep_for (make_number (2), Qnil); |
7b863bd5 | 3129 | } |
7b863bd5 JB |
3130 | } |
3131 | \f | |
f4b50f66 | 3132 | DEFUN ("load-average", Fload_average, Sload_average, 0, 1, 0, |
e9d8ddc9 | 3133 | doc: /* Return list of 1 minute, 5 minute and 15 minute load averages. |
47cebab1 GM |
3134 | |
3135 | Each of the three load averages is multiplied by 100, then converted | |
3136 | to integer. | |
3137 | ||
3138 | When USE-FLOATS is non-nil, floats will be used instead of integers. | |
3139 | These floats are not multiplied by 100. | |
3140 | ||
3141 | If the 5-minute or 15-minute load averages are not available, return a | |
e9d8ddc9 MB |
3142 | shortened list, containing only those averages which are available. */) |
3143 | (use_floats) | |
f4b50f66 | 3144 | Lisp_Object use_floats; |
7b863bd5 | 3145 | { |
daa37602 JB |
3146 | double load_ave[3]; |
3147 | int loads = getloadavg (load_ave, 3); | |
f4b50f66 | 3148 | Lisp_Object ret = Qnil; |
7b863bd5 | 3149 | |
daa37602 JB |
3150 | if (loads < 0) |
3151 | error ("load-average not implemented for this operating system"); | |
3152 | ||
f4b50f66 RS |
3153 | while (loads-- > 0) |
3154 | { | |
3155 | Lisp_Object load = (NILP (use_floats) ? | |
3156 | make_number ((int) (100.0 * load_ave[loads])) | |
3157 | : make_float (load_ave[loads])); | |
3158 | ret = Fcons (load, ret); | |
3159 | } | |
daa37602 JB |
3160 | |
3161 | return ret; | |
3162 | } | |
7b863bd5 | 3163 | \f |
b56ba8de SS |
3164 | Lisp_Object Vfeatures, Qsubfeatures; |
3165 | extern Lisp_Object Vafter_load_alist; | |
7b863bd5 | 3166 | |
65550192 | 3167 | DEFUN ("featurep", Ffeaturep, Sfeaturep, 1, 2, 0, |
e9d8ddc9 | 3168 | doc: /* Returns t if FEATURE is present in this Emacs. |
47cebab1 GM |
3169 | |
3170 | Use this to conditionalize execution of lisp code based on the | |
3171 | presence or absence of emacs or environment extensions. | |
3172 | Use `provide' to declare that a feature is available. This function | |
3173 | looks at the value of the variable `features'. The optional argument | |
e9d8ddc9 MB |
3174 | SUBFEATURE can be used to check a specific subfeature of FEATURE. */) |
3175 | (feature, subfeature) | |
65550192 | 3176 | Lisp_Object feature, subfeature; |
7b863bd5 JB |
3177 | { |
3178 | register Lisp_Object tem; | |
b7826503 | 3179 | CHECK_SYMBOL (feature); |
7b863bd5 | 3180 | tem = Fmemq (feature, Vfeatures); |
65550192 | 3181 | if (!NILP (tem) && !NILP (subfeature)) |
37ebddef | 3182 | tem = Fmember (subfeature, Fget (feature, Qsubfeatures)); |
265a9e55 | 3183 | return (NILP (tem)) ? Qnil : Qt; |
7b863bd5 JB |
3184 | } |
3185 | ||
65550192 | 3186 | DEFUN ("provide", Fprovide, Sprovide, 1, 2, 0, |
e9d8ddc9 | 3187 | doc: /* Announce that FEATURE is a feature of the current Emacs. |
47cebab1 | 3188 | The optional argument SUBFEATURES should be a list of symbols listing |
e9d8ddc9 MB |
3189 | particular subfeatures supported in this version of FEATURE. */) |
3190 | (feature, subfeatures) | |
65550192 | 3191 | Lisp_Object feature, subfeatures; |
7b863bd5 JB |
3192 | { |
3193 | register Lisp_Object tem; | |
b7826503 | 3194 | CHECK_SYMBOL (feature); |
37ebddef | 3195 | CHECK_LIST (subfeatures); |
265a9e55 | 3196 | if (!NILP (Vautoload_queue)) |
7b863bd5 JB |
3197 | Vautoload_queue = Fcons (Fcons (Vfeatures, Qnil), Vautoload_queue); |
3198 | tem = Fmemq (feature, Vfeatures); | |
265a9e55 | 3199 | if (NILP (tem)) |
7b863bd5 | 3200 | Vfeatures = Fcons (feature, Vfeatures); |
65550192 SM |
3201 | if (!NILP (subfeatures)) |
3202 | Fput (feature, Qsubfeatures, subfeatures); | |
68732608 | 3203 | LOADHIST_ATTACH (Fcons (Qprovide, feature)); |
65550192 SM |
3204 | |
3205 | /* Run any load-hooks for this file. */ | |
3206 | tem = Fassq (feature, Vafter_load_alist); | |
3207 | if (!NILP (tem)) | |
3208 | Fprogn (Fcdr (tem)); | |
3209 | ||
7b863bd5 JB |
3210 | return feature; |
3211 | } | |
1f79789d RS |
3212 | \f |
3213 | /* `require' and its subroutines. */ | |
3214 | ||
3215 | /* List of features currently being require'd, innermost first. */ | |
3216 | ||
3217 | Lisp_Object require_nesting_list; | |
3218 | ||
b9d9a9b9 | 3219 | Lisp_Object |
1f79789d RS |
3220 | require_unwind (old_value) |
3221 | Lisp_Object old_value; | |
3222 | { | |
b9d9a9b9 | 3223 | return require_nesting_list = old_value; |
1f79789d | 3224 | } |
7b863bd5 | 3225 | |
53d5acf5 | 3226 | DEFUN ("require", Frequire, Srequire, 1, 3, 0, |
e9d8ddc9 | 3227 | doc: /* If feature FEATURE is not loaded, load it from FILENAME. |
47cebab1 GM |
3228 | If FEATURE is not a member of the list `features', then the feature |
3229 | is not loaded; so load the file FILENAME. | |
3230 | If FILENAME is omitted, the printname of FEATURE is used as the file name, | |
3231 | and `load' will try to load this name appended with the suffix `.elc', | |
3232 | `.el' or the unmodified name, in that order. | |
3233 | If the optional third argument NOERROR is non-nil, | |
3234 | then return nil if the file is not found instead of signaling an error. | |
3235 | Normally the return value is FEATURE. | |
e9d8ddc9 MB |
3236 | The normal messages at start and end of loading FILENAME are suppressed. */) |
3237 | (feature, filename, noerror) | |
81a81c0f | 3238 | Lisp_Object feature, filename, noerror; |
7b863bd5 JB |
3239 | { |
3240 | register Lisp_Object tem; | |
1f79789d RS |
3241 | struct gcpro gcpro1, gcpro2; |
3242 | ||
b7826503 | 3243 | CHECK_SYMBOL (feature); |
1f79789d | 3244 | |
7b863bd5 | 3245 | tem = Fmemq (feature, Vfeatures); |
093386ca | 3246 | |
68732608 | 3247 | LOADHIST_ATTACH (Fcons (Qrequire, feature)); |
093386ca | 3248 | |
265a9e55 | 3249 | if (NILP (tem)) |
7b863bd5 JB |
3250 | { |
3251 | int count = specpdl_ptr - specpdl; | |
1f79789d | 3252 | int nesting = 0; |
bcb31b2a | 3253 | |
aea6173f RS |
3254 | /* This is to make sure that loadup.el gives a clear picture |
3255 | of what files are preloaded and when. */ | |
bcb31b2a RS |
3256 | if (! NILP (Vpurify_flag)) |
3257 | error ("(require %s) while preparing to dump", | |
c06583e1 | 3258 | XSTRING (SYMBOL_NAME (feature))->data); |
1f79789d RS |
3259 | |
3260 | /* A certain amount of recursive `require' is legitimate, | |
3261 | but if we require the same feature recursively 3 times, | |
3262 | signal an error. */ | |
3263 | tem = require_nesting_list; | |
3264 | while (! NILP (tem)) | |
3265 | { | |
3266 | if (! NILP (Fequal (feature, XCAR (tem)))) | |
3267 | nesting++; | |
3268 | tem = XCDR (tem); | |
3269 | } | |
3270 | if (nesting > 2) | |
3271 | error ("Recursive `require' for feature `%s'", | |
c06583e1 | 3272 | XSTRING (SYMBOL_NAME (feature))->data); |
1f79789d RS |
3273 | |
3274 | /* Update the list for any nested `require's that occur. */ | |
3275 | record_unwind_protect (require_unwind, require_nesting_list); | |
3276 | require_nesting_list = Fcons (feature, require_nesting_list); | |
7b863bd5 JB |
3277 | |
3278 | /* Value saved here is to be restored into Vautoload_queue */ | |
3279 | record_unwind_protect (un_autoload, Vautoload_queue); | |
3280 | Vautoload_queue = Qt; | |
3281 | ||
1f79789d RS |
3282 | /* Load the file. */ |
3283 | GCPRO2 (feature, filename); | |
81a81c0f GM |
3284 | tem = Fload (NILP (filename) ? Fsymbol_name (feature) : filename, |
3285 | noerror, Qt, Qnil, (NILP (filename) ? Qt : Qnil)); | |
1f79789d RS |
3286 | UNGCPRO; |
3287 | ||
53d5acf5 RS |
3288 | /* If load failed entirely, return nil. */ |
3289 | if (NILP (tem)) | |
41857307 | 3290 | return unbind_to (count, Qnil); |
7b863bd5 JB |
3291 | |
3292 | tem = Fmemq (feature, Vfeatures); | |
265a9e55 | 3293 | if (NILP (tem)) |
1f79789d | 3294 | error ("Required feature `%s' was not provided", |
c06583e1 | 3295 | XSTRING (SYMBOL_NAME (feature))->data); |
7b863bd5 JB |
3296 | |
3297 | /* Once loading finishes, don't undo it. */ | |
3298 | Vautoload_queue = Qt; | |
3299 | feature = unbind_to (count, feature); | |
3300 | } | |
1f79789d | 3301 | |
7b863bd5 JB |
3302 | return feature; |
3303 | } | |
3304 | \f | |
b4f334f7 KH |
3305 | /* Primitives for work of the "widget" library. |
3306 | In an ideal world, this section would not have been necessary. | |
3307 | However, lisp function calls being as slow as they are, it turns | |
3308 | out that some functions in the widget library (wid-edit.el) are the | |
3309 | bottleneck of Widget operation. Here is their translation to C, | |
3310 | for the sole reason of efficiency. */ | |
3311 | ||
a5254817 | 3312 | DEFUN ("plist-member", Fplist_member, Splist_member, 2, 2, 0, |
e9d8ddc9 | 3313 | doc: /* Return non-nil if PLIST has the property PROP. |
47cebab1 GM |
3314 | PLIST is a property list, which is a list of the form |
3315 | \(PROP1 VALUE1 PROP2 VALUE2 ...\). PROP is a symbol. | |
3316 | Unlike `plist-get', this allows you to distinguish between a missing | |
3317 | property and a property with the value nil. | |
e9d8ddc9 MB |
3318 | The value is actually the tail of PLIST whose car is PROP. */) |
3319 | (plist, prop) | |
b4f334f7 KH |
3320 | Lisp_Object plist, prop; |
3321 | { | |
3322 | while (CONSP (plist) && !EQ (XCAR (plist), prop)) | |
3323 | { | |
3324 | QUIT; | |
3325 | plist = XCDR (plist); | |
3326 | plist = CDR (plist); | |
3327 | } | |
3328 | return plist; | |
3329 | } | |
3330 | ||
3331 | DEFUN ("widget-put", Fwidget_put, Swidget_put, 3, 3, 0, | |
e9d8ddc9 MB |
3332 | doc: /* In WIDGET, set PROPERTY to VALUE. |
3333 | The value can later be retrieved with `widget-get'. */) | |
3334 | (widget, property, value) | |
b4f334f7 KH |
3335 | Lisp_Object widget, property, value; |
3336 | { | |
b7826503 | 3337 | CHECK_CONS (widget); |
f3fbd155 | 3338 | XSETCDR (widget, Fplist_put (XCDR (widget), property, value)); |
f7993597 | 3339 | return value; |
b4f334f7 KH |
3340 | } |
3341 | ||
3342 | DEFUN ("widget-get", Fwidget_get, Swidget_get, 2, 2, 0, | |
e9d8ddc9 | 3343 | doc: /* In WIDGET, get the value of PROPERTY. |
47cebab1 | 3344 | The value could either be specified when the widget was created, or |
e9d8ddc9 MB |
3345 | later with `widget-put'. */) |
3346 | (widget, property) | |
b4f334f7 KH |
3347 | Lisp_Object widget, property; |
3348 | { | |
3349 | Lisp_Object tmp; | |
3350 | ||
3351 | while (1) | |
3352 | { | |
3353 | if (NILP (widget)) | |
3354 | return Qnil; | |
b7826503 | 3355 | CHECK_CONS (widget); |
a5254817 | 3356 | tmp = Fplist_member (XCDR (widget), property); |
b4f334f7 KH |
3357 | if (CONSP (tmp)) |
3358 | { | |
3359 | tmp = XCDR (tmp); | |
3360 | return CAR (tmp); | |
3361 | } | |
3362 | tmp = XCAR (widget); | |
3363 | if (NILP (tmp)) | |
3364 | return Qnil; | |
3365 | widget = Fget (tmp, Qwidget_type); | |
3366 | } | |
3367 | } | |
3368 | ||
3369 | DEFUN ("widget-apply", Fwidget_apply, Swidget_apply, 2, MANY, 0, | |
e9d8ddc9 | 3370 | doc: /* Apply the value of WIDGET's PROPERTY to the widget itself. |
4bf8e2a3 MB |
3371 | ARGS are passed as extra arguments to the function. |
3372 | usage: (widget-apply WIDGET PROPERTY &rest ARGS) */) | |
e9d8ddc9 | 3373 | (nargs, args) |
b4f334f7 KH |
3374 | int nargs; |
3375 | Lisp_Object *args; | |
3376 | { | |
3377 | /* This function can GC. */ | |
3378 | Lisp_Object newargs[3]; | |
3379 | struct gcpro gcpro1, gcpro2; | |
3380 | Lisp_Object result; | |
3381 | ||
3382 | newargs[0] = Fwidget_get (args[0], args[1]); | |
3383 | newargs[1] = args[0]; | |
3384 | newargs[2] = Flist (nargs - 2, args + 2); | |
3385 | GCPRO2 (newargs[0], newargs[2]); | |
3386 | result = Fapply (3, newargs); | |
3387 | UNGCPRO; | |
3388 | return result; | |
3389 | } | |
3390 | \f | |
a90e80bf | 3391 | /* base64 encode/decode functions (RFC 2045). |
24c129e4 KH |
3392 | Based on code from GNU recode. */ |
3393 | ||
3394 | #define MIME_LINE_LENGTH 76 | |
3395 | ||
3396 | #define IS_ASCII(Character) \ | |
3397 | ((Character) < 128) | |
3398 | #define IS_BASE64(Character) \ | |
3399 | (IS_ASCII (Character) && base64_char_to_value[Character] >= 0) | |
9a092df0 PF |
3400 | #define IS_BASE64_IGNORABLE(Character) \ |
3401 | ((Character) == ' ' || (Character) == '\t' || (Character) == '\n' \ | |
3402 | || (Character) == '\f' || (Character) == '\r') | |
3403 | ||
3404 | /* Used by base64_decode_1 to retrieve a non-base64-ignorable | |
3405 | character or return retval if there are no characters left to | |
3406 | process. */ | |
caff31d4 KH |
3407 | #define READ_QUADRUPLET_BYTE(retval) \ |
3408 | do \ | |
3409 | { \ | |
3410 | if (i == length) \ | |
3411 | { \ | |
3412 | if (nchars_return) \ | |
3413 | *nchars_return = nchars; \ | |
3414 | return (retval); \ | |
3415 | } \ | |
3416 | c = from[i++]; \ | |
3417 | } \ | |
9a092df0 | 3418 | while (IS_BASE64_IGNORABLE (c)) |
24c129e4 | 3419 | |
4b2e75e6 EZ |
3420 | /* Don't use alloca for regions larger than this, lest we overflow |
3421 | their stack. */ | |
3422 | #define MAX_ALLOCA 16*1024 | |
3423 | ||
24c129e4 KH |
3424 | /* Table of characters coding the 64 values. */ |
3425 | static char base64_value_to_char[64] = | |
3426 | { | |
3427 | 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', /* 0- 9 */ | |
3428 | 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', /* 10-19 */ | |
3429 | 'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', /* 20-29 */ | |
3430 | 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', /* 30-39 */ | |
3431 | 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', /* 40-49 */ | |
3432 | 'y', 'z', '0', '1', '2', '3', '4', '5', '6', '7', /* 50-59 */ | |
3433 | '8', '9', '+', '/' /* 60-63 */ | |
3434 | }; | |
3435 | ||
3436 | /* Table of base64 values for first 128 characters. */ | |
3437 | static short base64_char_to_value[128] = | |
3438 | { | |
3439 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0- 9 */ | |
3440 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 10- 19 */ | |
3441 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 20- 29 */ | |
3442 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 30- 39 */ | |
3443 | -1, -1, -1, 62, -1, -1, -1, 63, 52, 53, /* 40- 49 */ | |
3444 | 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, /* 50- 59 */ | |
3445 | -1, -1, -1, -1, -1, 0, 1, 2, 3, 4, /* 60- 69 */ | |
3446 | 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, /* 70- 79 */ | |
3447 | 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, /* 80- 89 */ | |
3448 | 25, -1, -1, -1, -1, -1, -1, 26, 27, 28, /* 90- 99 */ | |
3449 | 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, /* 100-109 */ | |
3450 | 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, /* 110-119 */ | |
3451 | 49, 50, 51, -1, -1, -1, -1, -1 /* 120-127 */ | |
3452 | }; | |
3453 | ||
3454 | /* The following diagram shows the logical steps by which three octets | |
3455 | get transformed into four base64 characters. | |
3456 | ||
3457 | .--------. .--------. .--------. | |
3458 | |aaaaaabb| |bbbbcccc| |ccdddddd| | |
3459 | `--------' `--------' `--------' | |
3460 | 6 2 4 4 2 6 | |
3461 | .--------+--------+--------+--------. | |
3462 | |00aaaaaa|00bbbbbb|00cccccc|00dddddd| | |
3463 | `--------+--------+--------+--------' | |
3464 | ||
3465 | .--------+--------+--------+--------. | |
3466 | |AAAAAAAA|BBBBBBBB|CCCCCCCC|DDDDDDDD| | |
3467 | `--------+--------+--------+--------' | |
3468 | ||
3469 | The octets are divided into 6 bit chunks, which are then encoded into | |
3470 | base64 characters. */ | |
3471 | ||
3472 | ||
2efdd1b9 | 3473 | static int base64_encode_1 P_ ((const char *, char *, int, int, int)); |
caff31d4 | 3474 | static int base64_decode_1 P_ ((const char *, char *, int, int, int *)); |
24c129e4 KH |
3475 | |
3476 | DEFUN ("base64-encode-region", Fbase64_encode_region, Sbase64_encode_region, | |
3477 | 2, 3, "r", | |
e9d8ddc9 | 3478 | doc: /* Base64-encode the region between BEG and END. |
47cebab1 GM |
3479 | Return the length of the encoded text. |
3480 | Optional third argument NO-LINE-BREAK means do not break long lines | |
e9d8ddc9 MB |
3481 | into shorter lines. */) |
3482 | (beg, end, no_line_break) | |
24c129e4 KH |
3483 | Lisp_Object beg, end, no_line_break; |
3484 | { | |
3485 | char *encoded; | |
3486 | int allength, length; | |
3487 | int ibeg, iend, encoded_length; | |
3488 | int old_pos = PT; | |
3489 | ||
3490 | validate_region (&beg, &end); | |
3491 | ||
3492 | ibeg = CHAR_TO_BYTE (XFASTINT (beg)); | |
3493 | iend = CHAR_TO_BYTE (XFASTINT (end)); | |
3494 | move_gap_both (XFASTINT (beg), ibeg); | |
3495 | ||
3496 | /* We need to allocate enough room for encoding the text. | |
3497 | We need 33 1/3% more space, plus a newline every 76 | |
3498 | characters, and then we round up. */ | |
3499 | length = iend - ibeg; | |
3500 | allength = length + length/3 + 1; | |
3501 | allength += allength / MIME_LINE_LENGTH + 1 + 6; | |
3502 | ||
4b2e75e6 EZ |
3503 | if (allength <= MAX_ALLOCA) |
3504 | encoded = (char *) alloca (allength); | |
3505 | else | |
3506 | encoded = (char *) xmalloc (allength); | |
24c129e4 | 3507 | encoded_length = base64_encode_1 (BYTE_POS_ADDR (ibeg), encoded, length, |
2efdd1b9 KH |
3508 | NILP (no_line_break), |
3509 | !NILP (current_buffer->enable_multibyte_characters)); | |
24c129e4 KH |
3510 | if (encoded_length > allength) |
3511 | abort (); | |
3512 | ||
2efdd1b9 KH |
3513 | if (encoded_length < 0) |
3514 | { | |
3515 | /* The encoding wasn't possible. */ | |
3516 | if (length > MAX_ALLOCA) | |
3517 | xfree (encoded); | |
a90e80bf | 3518 | error ("Multibyte character in data for base64 encoding"); |
2efdd1b9 KH |
3519 | } |
3520 | ||
24c129e4 KH |
3521 | /* Now we have encoded the region, so we insert the new contents |
3522 | and delete the old. (Insert first in order to preserve markers.) */ | |
8b835738 | 3523 | SET_PT_BOTH (XFASTINT (beg), ibeg); |
24c129e4 | 3524 | insert (encoded, encoded_length); |
4b2e75e6 | 3525 | if (allength > MAX_ALLOCA) |
8c217645 | 3526 | xfree (encoded); |
24c129e4 KH |
3527 | del_range_byte (ibeg + encoded_length, iend + encoded_length, 1); |
3528 | ||
3529 | /* If point was outside of the region, restore it exactly; else just | |
3530 | move to the beginning of the region. */ | |
3531 | if (old_pos >= XFASTINT (end)) | |
3532 | old_pos += encoded_length - (XFASTINT (end) - XFASTINT (beg)); | |
8b835738 AS |
3533 | else if (old_pos > XFASTINT (beg)) |
3534 | old_pos = XFASTINT (beg); | |
24c129e4 KH |
3535 | SET_PT (old_pos); |
3536 | ||
3537 | /* We return the length of the encoded text. */ | |
3538 | return make_number (encoded_length); | |
3539 | } | |
3540 | ||
3541 | DEFUN ("base64-encode-string", Fbase64_encode_string, Sbase64_encode_string, | |
c22554ac | 3542 | 1, 2, 0, |
e9d8ddc9 | 3543 | doc: /* Base64-encode STRING and return the result. |
47cebab1 | 3544 | Optional second argument NO-LINE-BREAK means do not break long lines |
e9d8ddc9 MB |
3545 | into shorter lines. */) |
3546 | (string, no_line_break) | |
915b8312 | 3547 | Lisp_Object string, no_line_break; |
24c129e4 KH |
3548 | { |
3549 | int allength, length, encoded_length; | |
3550 | char *encoded; | |
4b2e75e6 | 3551 | Lisp_Object encoded_string; |
24c129e4 | 3552 | |
b7826503 | 3553 | CHECK_STRING (string); |
24c129e4 | 3554 | |
7f8a0840 KH |
3555 | /* We need to allocate enough room for encoding the text. |
3556 | We need 33 1/3% more space, plus a newline every 76 | |
3557 | characters, and then we round up. */ | |
24c129e4 | 3558 | length = STRING_BYTES (XSTRING (string)); |
7f8a0840 KH |
3559 | allength = length + length/3 + 1; |
3560 | allength += allength / MIME_LINE_LENGTH + 1 + 6; | |
24c129e4 KH |
3561 | |
3562 | /* We need to allocate enough room for decoding the text. */ | |
4b2e75e6 EZ |
3563 | if (allength <= MAX_ALLOCA) |
3564 | encoded = (char *) alloca (allength); | |
3565 | else | |
3566 | encoded = (char *) xmalloc (allength); | |
24c129e4 KH |
3567 | |
3568 | encoded_length = base64_encode_1 (XSTRING (string)->data, | |
2efdd1b9 KH |
3569 | encoded, length, NILP (no_line_break), |
3570 | STRING_MULTIBYTE (string)); | |
24c129e4 KH |
3571 | if (encoded_length > allength) |
3572 | abort (); | |
3573 | ||
2efdd1b9 KH |
3574 | if (encoded_length < 0) |
3575 | { | |
3576 | /* The encoding wasn't possible. */ | |
3577 | if (length > MAX_ALLOCA) | |
3578 | xfree (encoded); | |
a90e80bf | 3579 | error ("Multibyte character in data for base64 encoding"); |
2efdd1b9 KH |
3580 | } |
3581 | ||
4b2e75e6 EZ |
3582 | encoded_string = make_unibyte_string (encoded, encoded_length); |
3583 | if (allength > MAX_ALLOCA) | |
8c217645 | 3584 | xfree (encoded); |
4b2e75e6 EZ |
3585 | |
3586 | return encoded_string; | |
24c129e4 KH |
3587 | } |
3588 | ||
3589 | static int | |
2efdd1b9 | 3590 | base64_encode_1 (from, to, length, line_break, multibyte) |
24c129e4 KH |
3591 | const char *from; |
3592 | char *to; | |
3593 | int length; | |
3594 | int line_break; | |
2efdd1b9 | 3595 | int multibyte; |
24c129e4 KH |
3596 | { |
3597 | int counter = 0, i = 0; | |
3598 | char *e = to; | |
844eb643 | 3599 | int c; |
24c129e4 | 3600 | unsigned int value; |
2efdd1b9 | 3601 | int bytes; |
24c129e4 KH |
3602 | |
3603 | while (i < length) | |
3604 | { | |
2efdd1b9 KH |
3605 | if (multibyte) |
3606 | { | |
3607 | c = STRING_CHAR_AND_LENGTH (from + i, length - i, bytes); | |
caff31d4 | 3608 | if (c >= 256) |
2efdd1b9 | 3609 | return -1; |
caff31d4 | 3610 | i += bytes; |
2efdd1b9 KH |
3611 | } |
3612 | else | |
3613 | c = from[i++]; | |
24c129e4 KH |
3614 | |
3615 | /* Wrap line every 76 characters. */ | |
3616 | ||
3617 | if (line_break) | |
3618 | { | |
3619 | if (counter < MIME_LINE_LENGTH / 4) | |
3620 | counter++; | |
3621 | else | |
3622 | { | |
3623 | *e++ = '\n'; | |
3624 | counter = 1; | |
3625 | } | |
3626 | } | |
3627 | ||
3628 | /* Process first byte of a triplet. */ | |
3629 | ||
3630 | *e++ = base64_value_to_char[0x3f & c >> 2]; | |
3631 | value = (0x03 & c) << 4; | |
3632 | ||
3633 | /* Process second byte of a triplet. */ | |
3634 | ||
3635 | if (i == length) | |
3636 | { | |
3637 | *e++ = base64_value_to_char[value]; | |
3638 | *e++ = '='; | |
3639 | *e++ = '='; | |
3640 | break; | |
3641 | } | |
3642 | ||
2efdd1b9 KH |
3643 | if (multibyte) |
3644 | { | |
3645 | c = STRING_CHAR_AND_LENGTH (from + i, length - i, bytes); | |
caff31d4 | 3646 | if (c >= 256) |
844eb643 | 3647 | return -1; |
caff31d4 | 3648 | i += bytes; |
2efdd1b9 KH |
3649 | } |
3650 | else | |
3651 | c = from[i++]; | |
24c129e4 KH |
3652 | |
3653 | *e++ = base64_value_to_char[value | (0x0f & c >> 4)]; | |
3654 | value = (0x0f & c) << 2; | |
3655 | ||
3656 | /* Process third byte of a triplet. */ | |
3657 | ||
3658 | if (i == length) | |
3659 | { | |
3660 | *e++ = base64_value_to_char[value]; | |
3661 | *e++ = '='; | |
3662 | break; | |
3663 | } | |
3664 | ||
2efdd1b9 KH |
3665 | if (multibyte) |
3666 | { | |
3667 | c = STRING_CHAR_AND_LENGTH (from + i, length - i, bytes); | |
caff31d4 | 3668 | if (c >= 256) |
844eb643 | 3669 | return -1; |
caff31d4 | 3670 | i += bytes; |
2efdd1b9 KH |
3671 | } |
3672 | else | |
3673 | c = from[i++]; | |
24c129e4 KH |
3674 | |
3675 | *e++ = base64_value_to_char[value | (0x03 & c >> 6)]; | |
3676 | *e++ = base64_value_to_char[0x3f & c]; | |
3677 | } | |
3678 | ||
24c129e4 KH |
3679 | return e - to; |
3680 | } | |
3681 | ||
3682 | ||
3683 | DEFUN ("base64-decode-region", Fbase64_decode_region, Sbase64_decode_region, | |
47cebab1 | 3684 | 2, 2, "r", |
e9d8ddc9 | 3685 | doc: /* Base64-decode the region between BEG and END. |
47cebab1 | 3686 | Return the length of the decoded text. |
e9d8ddc9 MB |
3687 | If the region can't be decoded, signal an error and don't modify the buffer. */) |
3688 | (beg, end) | |
24c129e4 KH |
3689 | Lisp_Object beg, end; |
3690 | { | |
caff31d4 | 3691 | int ibeg, iend, length, allength; |
24c129e4 KH |
3692 | char *decoded; |
3693 | int old_pos = PT; | |
3694 | int decoded_length; | |
9b703a38 | 3695 | int inserted_chars; |
caff31d4 | 3696 | int multibyte = !NILP (current_buffer->enable_multibyte_characters); |
24c129e4 KH |
3697 | |
3698 | validate_region (&beg, &end); | |
3699 | ||
3700 | ibeg = CHAR_TO_BYTE (XFASTINT (beg)); | |
3701 | iend = CHAR_TO_BYTE (XFASTINT (end)); | |
3702 | ||
3703 | length = iend - ibeg; | |
caff31d4 KH |
3704 | |
3705 | /* We need to allocate enough room for decoding the text. If we are | |
3706 | working on a multibyte buffer, each decoded code may occupy at | |
3707 | most two bytes. */ | |
3708 | allength = multibyte ? length * 2 : length; | |
3709 | if (allength <= MAX_ALLOCA) | |
3710 | decoded = (char *) alloca (allength); | |
4b2e75e6 | 3711 | else |
caff31d4 | 3712 | decoded = (char *) xmalloc (allength); |
24c129e4 KH |
3713 | |
3714 | move_gap_both (XFASTINT (beg), ibeg); | |
caff31d4 KH |
3715 | decoded_length = base64_decode_1 (BYTE_POS_ADDR (ibeg), decoded, length, |
3716 | multibyte, &inserted_chars); | |
3717 | if (decoded_length > allength) | |
24c129e4 KH |
3718 | abort (); |
3719 | ||
3720 | if (decoded_length < 0) | |
8c217645 KH |
3721 | { |
3722 | /* The decoding wasn't possible. */ | |
caff31d4 | 3723 | if (allength > MAX_ALLOCA) |
8c217645 | 3724 | xfree (decoded); |
a90e80bf | 3725 | error ("Invalid base64 data"); |
8c217645 | 3726 | } |
24c129e4 KH |
3727 | |
3728 | /* Now we have decoded the region, so we insert the new contents | |
3729 | and delete the old. (Insert first in order to preserve markers.) */ | |
59f953a2 | 3730 | TEMP_SET_PT_BOTH (XFASTINT (beg), ibeg); |
2efdd1b9 | 3731 | insert_1_both (decoded, inserted_chars, decoded_length, 0, 1, 0); |
caff31d4 | 3732 | if (allength > MAX_ALLOCA) |
8c217645 | 3733 | xfree (decoded); |
2efdd1b9 KH |
3734 | /* Delete the original text. */ |
3735 | del_range_both (PT, PT_BYTE, XFASTINT (end) + inserted_chars, | |
3736 | iend + decoded_length, 1); | |
24c129e4 KH |
3737 | |
3738 | /* If point was outside of the region, restore it exactly; else just | |
3739 | move to the beginning of the region. */ | |
3740 | if (old_pos >= XFASTINT (end)) | |
9b703a38 KH |
3741 | old_pos += inserted_chars - (XFASTINT (end) - XFASTINT (beg)); |
3742 | else if (old_pos > XFASTINT (beg)) | |
3743 | old_pos = XFASTINT (beg); | |
e52ad9c9 | 3744 | SET_PT (old_pos > ZV ? ZV : old_pos); |
24c129e4 | 3745 | |
9b703a38 | 3746 | return make_number (inserted_chars); |
24c129e4 KH |
3747 | } |
3748 | ||
3749 | DEFUN ("base64-decode-string", Fbase64_decode_string, Sbase64_decode_string, | |
3750 | 1, 1, 0, | |
e9d8ddc9 MB |
3751 | doc: /* Base64-decode STRING and return the result. */) |
3752 | (string) | |
24c129e4 KH |
3753 | Lisp_Object string; |
3754 | { | |
3755 | char *decoded; | |
3756 | int length, decoded_length; | |
4b2e75e6 | 3757 | Lisp_Object decoded_string; |
24c129e4 | 3758 | |
b7826503 | 3759 | CHECK_STRING (string); |
24c129e4 KH |
3760 | |
3761 | length = STRING_BYTES (XSTRING (string)); | |
3762 | /* We need to allocate enough room for decoding the text. */ | |
4b2e75e6 EZ |
3763 | if (length <= MAX_ALLOCA) |
3764 | decoded = (char *) alloca (length); | |
3765 | else | |
3766 | decoded = (char *) xmalloc (length); | |
24c129e4 | 3767 | |
8ec118cd | 3768 | /* The decoded result should be unibyte. */ |
caff31d4 | 3769 | decoded_length = base64_decode_1 (XSTRING (string)->data, decoded, length, |
8ec118cd | 3770 | 0, NULL); |
24c129e4 KH |
3771 | if (decoded_length > length) |
3772 | abort (); | |
3d6c79c5 | 3773 | else if (decoded_length >= 0) |
2efdd1b9 | 3774 | decoded_string = make_unibyte_string (decoded, decoded_length); |
3d6c79c5 GM |
3775 | else |
3776 | decoded_string = Qnil; | |
24c129e4 | 3777 | |
4b2e75e6 | 3778 | if (length > MAX_ALLOCA) |
8c217645 | 3779 | xfree (decoded); |
3d6c79c5 | 3780 | if (!STRINGP (decoded_string)) |
a90e80bf | 3781 | error ("Invalid base64 data"); |
4b2e75e6 EZ |
3782 | |
3783 | return decoded_string; | |
24c129e4 KH |
3784 | } |
3785 | ||
caff31d4 KH |
3786 | /* Base64-decode the data at FROM of LENGHT bytes into TO. If |
3787 | MULTIBYTE is nonzero, the decoded result should be in multibyte | |
3788 | form. If NCHARS_RETRUN is not NULL, store the number of produced | |
3789 | characters in *NCHARS_RETURN. */ | |
3790 | ||
24c129e4 | 3791 | static int |
caff31d4 | 3792 | base64_decode_1 (from, to, length, multibyte, nchars_return) |
24c129e4 KH |
3793 | const char *from; |
3794 | char *to; | |
3795 | int length; | |
caff31d4 KH |
3796 | int multibyte; |
3797 | int *nchars_return; | |
24c129e4 | 3798 | { |
9a092df0 | 3799 | int i = 0; |
24c129e4 KH |
3800 | char *e = to; |
3801 | unsigned char c; | |
3802 | unsigned long value; | |
caff31d4 | 3803 | int nchars = 0; |
24c129e4 | 3804 | |
9a092df0 | 3805 | while (1) |
24c129e4 | 3806 | { |
9a092df0 | 3807 | /* Process first byte of a quadruplet. */ |
24c129e4 | 3808 | |
9a092df0 | 3809 | READ_QUADRUPLET_BYTE (e-to); |
24c129e4 KH |
3810 | |
3811 | if (!IS_BASE64 (c)) | |
3812 | return -1; | |
3813 | value = base64_char_to_value[c] << 18; | |
3814 | ||
3815 | /* Process second byte of a quadruplet. */ | |
3816 | ||
9a092df0 | 3817 | READ_QUADRUPLET_BYTE (-1); |
24c129e4 KH |
3818 | |
3819 | if (!IS_BASE64 (c)) | |
3820 | return -1; | |
3821 | value |= base64_char_to_value[c] << 12; | |
3822 | ||
caff31d4 KH |
3823 | c = (unsigned char) (value >> 16); |
3824 | if (multibyte) | |
3825 | e += CHAR_STRING (c, e); | |
3826 | else | |
3827 | *e++ = c; | |
3828 | nchars++; | |
24c129e4 KH |
3829 | |
3830 | /* Process third byte of a quadruplet. */ | |
59f953a2 | 3831 | |
9a092df0 | 3832 | READ_QUADRUPLET_BYTE (-1); |
24c129e4 KH |
3833 | |
3834 | if (c == '=') | |
3835 | { | |
9a092df0 | 3836 | READ_QUADRUPLET_BYTE (-1); |
59f953a2 | 3837 | |
24c129e4 KH |
3838 | if (c != '=') |
3839 | return -1; | |
3840 | continue; | |
3841 | } | |
3842 | ||
3843 | if (!IS_BASE64 (c)) | |
3844 | return -1; | |
3845 | value |= base64_char_to_value[c] << 6; | |
3846 | ||
caff31d4 KH |
3847 | c = (unsigned char) (0xff & value >> 8); |
3848 | if (multibyte) | |
3849 | e += CHAR_STRING (c, e); | |
3850 | else | |
3851 | *e++ = c; | |
3852 | nchars++; | |
24c129e4 KH |
3853 | |
3854 | /* Process fourth byte of a quadruplet. */ | |
3855 | ||
9a092df0 | 3856 | READ_QUADRUPLET_BYTE (-1); |
24c129e4 KH |
3857 | |
3858 | if (c == '=') | |
3859 | continue; | |
3860 | ||
3861 | if (!IS_BASE64 (c)) | |
3862 | return -1; | |
3863 | value |= base64_char_to_value[c]; | |
3864 | ||
caff31d4 KH |
3865 | c = (unsigned char) (0xff & value); |
3866 | if (multibyte) | |
3867 | e += CHAR_STRING (c, e); | |
3868 | else | |
3869 | *e++ = c; | |
3870 | nchars++; | |
24c129e4 | 3871 | } |
24c129e4 | 3872 | } |
d80c6c11 GM |
3873 | |
3874 | ||
3875 | \f | |
3876 | /*********************************************************************** | |
3877 | ***** ***** | |
3878 | ***** Hash Tables ***** | |
3879 | ***** ***** | |
3880 | ***********************************************************************/ | |
3881 | ||
3882 | /* Implemented by gerd@gnu.org. This hash table implementation was | |
3883 | inspired by CMUCL hash tables. */ | |
3884 | ||
3885 | /* Ideas: | |
3886 | ||
3887 | 1. For small tables, association lists are probably faster than | |
3888 | hash tables because they have lower overhead. | |
3889 | ||
3890 | For uses of hash tables where the O(1) behavior of table | |
3891 | operations is not a requirement, it might therefore be a good idea | |
3892 | not to hash. Instead, we could just do a linear search in the | |
3893 | key_and_value vector of the hash table. This could be done | |
3894 | if a `:linear-search t' argument is given to make-hash-table. */ | |
3895 | ||
3896 | ||
d80c6c11 GM |
3897 | /* Value is the key part of entry IDX in hash table H. */ |
3898 | ||
3899 | #define HASH_KEY(H, IDX) AREF ((H)->key_and_value, 2 * (IDX)) | |
3900 | ||
3901 | /* Value is the value part of entry IDX in hash table H. */ | |
3902 | ||
3903 | #define HASH_VALUE(H, IDX) AREF ((H)->key_and_value, 2 * (IDX) + 1) | |
3904 | ||
3905 | /* Value is the index of the next entry following the one at IDX | |
3906 | in hash table H. */ | |
3907 | ||
3908 | #define HASH_NEXT(H, IDX) AREF ((H)->next, (IDX)) | |
3909 | ||
3910 | /* Value is the hash code computed for entry IDX in hash table H. */ | |
3911 | ||
3912 | #define HASH_HASH(H, IDX) AREF ((H)->hash, (IDX)) | |
3913 | ||
3914 | /* Value is the index of the element in hash table H that is the | |
3915 | start of the collision list at index IDX in the index vector of H. */ | |
3916 | ||
3917 | #define HASH_INDEX(H, IDX) AREF ((H)->index, (IDX)) | |
3918 | ||
3919 | /* Value is the size of hash table H. */ | |
3920 | ||
3921 | #define HASH_TABLE_SIZE(H) XVECTOR ((H)->next)->size | |
3922 | ||
3923 | /* The list of all weak hash tables. Don't staticpro this one. */ | |
3924 | ||
3925 | Lisp_Object Vweak_hash_tables; | |
3926 | ||
3927 | /* Various symbols. */ | |
3928 | ||
f899c503 | 3929 | Lisp_Object Qhash_table_p, Qeq, Qeql, Qequal, Qkey, Qvalue; |
ee0403b3 | 3930 | Lisp_Object QCtest, QCsize, QCrehash_size, QCrehash_threshold, QCweakness; |
ec504e6f | 3931 | Lisp_Object Qhash_table_test, Qkey_or_value, Qkey_and_value; |
d80c6c11 GM |
3932 | |
3933 | /* Function prototypes. */ | |
3934 | ||
3935 | static struct Lisp_Hash_Table *check_hash_table P_ ((Lisp_Object)); | |
d80c6c11 | 3936 | static int get_key_arg P_ ((Lisp_Object, int, Lisp_Object *, char *)); |
d80c6c11 | 3937 | static void maybe_resize_hash_table P_ ((struct Lisp_Hash_Table *)); |
d80c6c11 GM |
3938 | static int cmpfn_eql P_ ((struct Lisp_Hash_Table *, Lisp_Object, unsigned, |
3939 | Lisp_Object, unsigned)); | |
3940 | static int cmpfn_equal P_ ((struct Lisp_Hash_Table *, Lisp_Object, unsigned, | |
3941 | Lisp_Object, unsigned)); | |
3942 | static int cmpfn_user_defined P_ ((struct Lisp_Hash_Table *, Lisp_Object, | |
3943 | unsigned, Lisp_Object, unsigned)); | |
3944 | static unsigned hashfn_eq P_ ((struct Lisp_Hash_Table *, Lisp_Object)); | |
3945 | static unsigned hashfn_eql P_ ((struct Lisp_Hash_Table *, Lisp_Object)); | |
3946 | static unsigned hashfn_equal P_ ((struct Lisp_Hash_Table *, Lisp_Object)); | |
3947 | static unsigned hashfn_user_defined P_ ((struct Lisp_Hash_Table *, | |
3948 | Lisp_Object)); | |
3949 | static unsigned sxhash_string P_ ((unsigned char *, int)); | |
3950 | static unsigned sxhash_list P_ ((Lisp_Object, int)); | |
3951 | static unsigned sxhash_vector P_ ((Lisp_Object, int)); | |
3952 | static unsigned sxhash_bool_vector P_ ((Lisp_Object)); | |
a0b581cc | 3953 | static int sweep_weak_table P_ ((struct Lisp_Hash_Table *, int)); |
d80c6c11 GM |
3954 | |
3955 | ||
3956 | \f | |
3957 | /*********************************************************************** | |
3958 | Utilities | |
3959 | ***********************************************************************/ | |
3960 | ||
3961 | /* If OBJ is a Lisp hash table, return a pointer to its struct | |
3962 | Lisp_Hash_Table. Otherwise, signal an error. */ | |
3963 | ||
3964 | static struct Lisp_Hash_Table * | |
3965 | check_hash_table (obj) | |
3966 | Lisp_Object obj; | |
3967 | { | |
b7826503 | 3968 | CHECK_HASH_TABLE (obj); |
d80c6c11 GM |
3969 | return XHASH_TABLE (obj); |
3970 | } | |
3971 | ||
3972 | ||
3973 | /* Value is the next integer I >= N, N >= 0 which is "almost" a prime | |
3974 | number. */ | |
3975 | ||
6e509e80 | 3976 | int |
d80c6c11 GM |
3977 | next_almost_prime (n) |
3978 | int n; | |
3979 | { | |
3980 | if (n % 2 == 0) | |
3981 | n += 1; | |
3982 | if (n % 3 == 0) | |
3983 | n += 2; | |
3984 | if (n % 7 == 0) | |
3985 | n += 4; | |
3986 | return n; | |
3987 | } | |
3988 | ||
3989 | ||
3990 | /* Find KEY in ARGS which has size NARGS. Don't consider indices for | |
3991 | which USED[I] is non-zero. If found at index I in ARGS, set | |
3992 | USED[I] and USED[I + 1] to 1, and return I + 1. Otherwise return | |
3993 | -1. This function is used to extract a keyword/argument pair from | |
3994 | a DEFUN parameter list. */ | |
3995 | ||
3996 | static int | |
3997 | get_key_arg (key, nargs, args, used) | |
3998 | Lisp_Object key; | |
3999 | int nargs; | |
4000 | Lisp_Object *args; | |
4001 | char *used; | |
4002 | { | |
4003 | int i; | |
59f953a2 | 4004 | |
d80c6c11 GM |
4005 | for (i = 0; i < nargs - 1; ++i) |
4006 | if (!used[i] && EQ (args[i], key)) | |
4007 | break; | |
59f953a2 | 4008 | |
d80c6c11 GM |
4009 | if (i >= nargs - 1) |
4010 | i = -1; | |
4011 | else | |
4012 | { | |
4013 | used[i++] = 1; | |
4014 | used[i] = 1; | |
4015 | } | |
59f953a2 | 4016 | |
d80c6c11 GM |
4017 | return i; |
4018 | } | |
4019 | ||
4020 | ||
4021 | /* Return a Lisp vector which has the same contents as VEC but has | |
4022 | size NEW_SIZE, NEW_SIZE >= VEC->size. Entries in the resulting | |
4023 | vector that are not copied from VEC are set to INIT. */ | |
4024 | ||
fa7dad5b | 4025 | Lisp_Object |
d80c6c11 GM |
4026 | larger_vector (vec, new_size, init) |
4027 | Lisp_Object vec; | |
4028 | int new_size; | |
4029 | Lisp_Object init; | |
4030 | { | |
4031 | struct Lisp_Vector *v; | |
4032 | int i, old_size; | |
4033 | ||
4034 | xassert (VECTORP (vec)); | |
4035 | old_size = XVECTOR (vec)->size; | |
4036 | xassert (new_size >= old_size); | |
4037 | ||
b3660ef6 | 4038 | v = allocate_vector (new_size); |
d80c6c11 GM |
4039 | bcopy (XVECTOR (vec)->contents, v->contents, |
4040 | old_size * sizeof *v->contents); | |
4041 | for (i = old_size; i < new_size; ++i) | |
4042 | v->contents[i] = init; | |
4043 | XSETVECTOR (vec, v); | |
4044 | return vec; | |
4045 | } | |
4046 | ||
4047 | ||
4048 | /*********************************************************************** | |
4049 | Low-level Functions | |
4050 | ***********************************************************************/ | |
4051 | ||
d80c6c11 GM |
4052 | /* Compare KEY1 which has hash code HASH1 and KEY2 with hash code |
4053 | HASH2 in hash table H using `eql'. Value is non-zero if KEY1 and | |
4054 | KEY2 are the same. */ | |
4055 | ||
4056 | static int | |
4057 | cmpfn_eql (h, key1, hash1, key2, hash2) | |
4058 | struct Lisp_Hash_Table *h; | |
4059 | Lisp_Object key1, key2; | |
4060 | unsigned hash1, hash2; | |
4061 | { | |
2e5da676 GM |
4062 | return (FLOATP (key1) |
4063 | && FLOATP (key2) | |
e84b1dea | 4064 | && XFLOAT_DATA (key1) == XFLOAT_DATA (key2)); |
d80c6c11 GM |
4065 | } |
4066 | ||
4067 | ||
4068 | /* Compare KEY1 which has hash code HASH1 and KEY2 with hash code | |
4069 | HASH2 in hash table H using `equal'. Value is non-zero if KEY1 and | |
4070 | KEY2 are the same. */ | |
4071 | ||
4072 | static int | |
4073 | cmpfn_equal (h, key1, hash1, key2, hash2) | |
4074 | struct Lisp_Hash_Table *h; | |
4075 | Lisp_Object key1, key2; | |
4076 | unsigned hash1, hash2; | |
4077 | { | |
2e5da676 | 4078 | return hash1 == hash2 && !NILP (Fequal (key1, key2)); |
d80c6c11 GM |
4079 | } |
4080 | ||
59f953a2 | 4081 | |
d80c6c11 GM |
4082 | /* Compare KEY1 which has hash code HASH1, and KEY2 with hash code |
4083 | HASH2 in hash table H using H->user_cmp_function. Value is non-zero | |
4084 | if KEY1 and KEY2 are the same. */ | |
4085 | ||
4086 | static int | |
4087 | cmpfn_user_defined (h, key1, hash1, key2, hash2) | |
4088 | struct Lisp_Hash_Table *h; | |
4089 | Lisp_Object key1, key2; | |
4090 | unsigned hash1, hash2; | |
4091 | { | |
4092 | if (hash1 == hash2) | |
4093 | { | |
4094 | Lisp_Object args[3]; | |
59f953a2 | 4095 | |
d80c6c11 GM |
4096 | args[0] = h->user_cmp_function; |
4097 | args[1] = key1; | |
4098 | args[2] = key2; | |
4099 | return !NILP (Ffuncall (3, args)); | |
4100 | } | |
4101 | else | |
4102 | return 0; | |
4103 | } | |
4104 | ||
4105 | ||
4106 | /* Value is a hash code for KEY for use in hash table H which uses | |
4107 | `eq' to compare keys. The hash code returned is guaranteed to fit | |
4108 | in a Lisp integer. */ | |
4109 | ||
4110 | static unsigned | |
4111 | hashfn_eq (h, key) | |
4112 | struct Lisp_Hash_Table *h; | |
4113 | Lisp_Object key; | |
4114 | { | |
cf681889 GM |
4115 | unsigned hash = XUINT (key) ^ XGCTYPE (key); |
4116 | xassert ((hash & ~VALMASK) == 0); | |
4117 | return hash; | |
d80c6c11 GM |
4118 | } |
4119 | ||
4120 | ||
4121 | /* Value is a hash code for KEY for use in hash table H which uses | |
4122 | `eql' to compare keys. The hash code returned is guaranteed to fit | |
4123 | in a Lisp integer. */ | |
4124 | ||
4125 | static unsigned | |
4126 | hashfn_eql (h, key) | |
4127 | struct Lisp_Hash_Table *h; | |
4128 | Lisp_Object key; | |
4129 | { | |
cf681889 GM |
4130 | unsigned hash; |
4131 | if (FLOATP (key)) | |
4132 | hash = sxhash (key, 0); | |
d80c6c11 | 4133 | else |
cf681889 GM |
4134 | hash = XUINT (key) ^ XGCTYPE (key); |
4135 | xassert ((hash & ~VALMASK) == 0); | |
4136 | return hash; | |
d80c6c11 GM |
4137 | } |
4138 | ||
4139 | ||
4140 | /* Value is a hash code for KEY for use in hash table H which uses | |
4141 | `equal' to compare keys. The hash code returned is guaranteed to fit | |
4142 | in a Lisp integer. */ | |
4143 | ||
4144 | static unsigned | |
4145 | hashfn_equal (h, key) | |
4146 | struct Lisp_Hash_Table *h; | |
4147 | Lisp_Object key; | |
4148 | { | |
cf681889 GM |
4149 | unsigned hash = sxhash (key, 0); |
4150 | xassert ((hash & ~VALMASK) == 0); | |
4151 | return hash; | |
d80c6c11 GM |
4152 | } |
4153 | ||
4154 | ||
4155 | /* Value is a hash code for KEY for use in hash table H which uses as | |
4156 | user-defined function to compare keys. The hash code returned is | |
4157 | guaranteed to fit in a Lisp integer. */ | |
4158 | ||
4159 | static unsigned | |
4160 | hashfn_user_defined (h, key) | |
4161 | struct Lisp_Hash_Table *h; | |
4162 | Lisp_Object key; | |
4163 | { | |
4164 | Lisp_Object args[2], hash; | |
59f953a2 | 4165 | |
d80c6c11 GM |
4166 | args[0] = h->user_hash_function; |
4167 | args[1] = key; | |
4168 | hash = Ffuncall (2, args); | |
4169 | if (!INTEGERP (hash)) | |
4170 | Fsignal (Qerror, | |
1fd4c450 | 4171 | list2 (build_string ("Invalid hash code returned from \ |
d80c6c11 GM |
4172 | user-supplied hash function"), |
4173 | hash)); | |
4174 | return XUINT (hash); | |
4175 | } | |
4176 | ||
4177 | ||
4178 | /* Create and initialize a new hash table. | |
4179 | ||
4180 | TEST specifies the test the hash table will use to compare keys. | |
4181 | It must be either one of the predefined tests `eq', `eql' or | |
4182 | `equal' or a symbol denoting a user-defined test named TEST with | |
4183 | test and hash functions USER_TEST and USER_HASH. | |
59f953a2 | 4184 | |
1fd4c450 | 4185 | Give the table initial capacity SIZE, SIZE >= 0, an integer. |
d80c6c11 GM |
4186 | |
4187 | If REHASH_SIZE is an integer, it must be > 0, and this hash table's | |
4188 | new size when it becomes full is computed by adding REHASH_SIZE to | |
4189 | its old size. If REHASH_SIZE is a float, it must be > 1.0, and the | |
4190 | table's new size is computed by multiplying its old size with | |
4191 | REHASH_SIZE. | |
4192 | ||
4193 | REHASH_THRESHOLD must be a float <= 1.0, and > 0. The table will | |
4194 | be resized when the ratio of (number of entries in the table) / | |
4195 | (table size) is >= REHASH_THRESHOLD. | |
4196 | ||
4197 | WEAK specifies the weakness of the table. If non-nil, it must be | |
ec504e6f | 4198 | one of the symbols `key', `value', `key-or-value', or `key-and-value'. */ |
d80c6c11 GM |
4199 | |
4200 | Lisp_Object | |
4201 | make_hash_table (test, size, rehash_size, rehash_threshold, weak, | |
4202 | user_test, user_hash) | |
4203 | Lisp_Object test, size, rehash_size, rehash_threshold, weak; | |
4204 | Lisp_Object user_test, user_hash; | |
4205 | { | |
4206 | struct Lisp_Hash_Table *h; | |
d80c6c11 | 4207 | Lisp_Object table; |
b3660ef6 | 4208 | int index_size, i, sz; |
d80c6c11 GM |
4209 | |
4210 | /* Preconditions. */ | |
4211 | xassert (SYMBOLP (test)); | |
1fd4c450 | 4212 | xassert (INTEGERP (size) && XINT (size) >= 0); |
d80c6c11 GM |
4213 | xassert ((INTEGERP (rehash_size) && XINT (rehash_size) > 0) |
4214 | || (FLOATP (rehash_size) && XFLOATINT (rehash_size) > 1.0)); | |
4215 | xassert (FLOATP (rehash_threshold) | |
4216 | && XFLOATINT (rehash_threshold) > 0 | |
4217 | && XFLOATINT (rehash_threshold) <= 1.0); | |
4218 | ||
1fd4c450 GM |
4219 | if (XFASTINT (size) == 0) |
4220 | size = make_number (1); | |
4221 | ||
b3660ef6 GM |
4222 | /* Allocate a table and initialize it. */ |
4223 | h = allocate_hash_table (); | |
d80c6c11 GM |
4224 | |
4225 | /* Initialize hash table slots. */ | |
4226 | sz = XFASTINT (size); | |
59f953a2 | 4227 | |
d80c6c11 GM |
4228 | h->test = test; |
4229 | if (EQ (test, Qeql)) | |
4230 | { | |
4231 | h->cmpfn = cmpfn_eql; | |
4232 | h->hashfn = hashfn_eql; | |
4233 | } | |
4234 | else if (EQ (test, Qeq)) | |
4235 | { | |
2e5da676 | 4236 | h->cmpfn = NULL; |
d80c6c11 GM |
4237 | h->hashfn = hashfn_eq; |
4238 | } | |
4239 | else if (EQ (test, Qequal)) | |
4240 | { | |
4241 | h->cmpfn = cmpfn_equal; | |
4242 | h->hashfn = hashfn_equal; | |
4243 | } | |
4244 | else | |
4245 | { | |
4246 | h->user_cmp_function = user_test; | |
4247 | h->user_hash_function = user_hash; | |
4248 | h->cmpfn = cmpfn_user_defined; | |
4249 | h->hashfn = hashfn_user_defined; | |
4250 | } | |
59f953a2 | 4251 | |
d80c6c11 GM |
4252 | h->weak = weak; |
4253 | h->rehash_threshold = rehash_threshold; | |
4254 | h->rehash_size = rehash_size; | |
4255 | h->count = make_number (0); | |
4256 | h->key_and_value = Fmake_vector (make_number (2 * sz), Qnil); | |
4257 | h->hash = Fmake_vector (size, Qnil); | |
4258 | h->next = Fmake_vector (size, Qnil); | |
0690cb37 DL |
4259 | /* Cast to int here avoids losing with gcc 2.95 on Tru64/Alpha... */ |
4260 | index_size = next_almost_prime ((int) (sz / XFLOATINT (rehash_threshold))); | |
d80c6c11 GM |
4261 | h->index = Fmake_vector (make_number (index_size), Qnil); |
4262 | ||
4263 | /* Set up the free list. */ | |
4264 | for (i = 0; i < sz - 1; ++i) | |
4265 | HASH_NEXT (h, i) = make_number (i + 1); | |
4266 | h->next_free = make_number (0); | |
4267 | ||
4268 | XSET_HASH_TABLE (table, h); | |
4269 | xassert (HASH_TABLE_P (table)); | |
4270 | xassert (XHASH_TABLE (table) == h); | |
4271 | ||
4272 | /* Maybe add this hash table to the list of all weak hash tables. */ | |
4273 | if (NILP (h->weak)) | |
4274 | h->next_weak = Qnil; | |
4275 | else | |
4276 | { | |
4277 | h->next_weak = Vweak_hash_tables; | |
4278 | Vweak_hash_tables = table; | |
4279 | } | |
4280 | ||
4281 | return table; | |
4282 | } | |
4283 | ||
4284 | ||
f899c503 GM |
4285 | /* Return a copy of hash table H1. Keys and values are not copied, |
4286 | only the table itself is. */ | |
4287 | ||
4288 | Lisp_Object | |
4289 | copy_hash_table (h1) | |
4290 | struct Lisp_Hash_Table *h1; | |
4291 | { | |
4292 | Lisp_Object table; | |
4293 | struct Lisp_Hash_Table *h2; | |
44dc78e0 | 4294 | struct Lisp_Vector *next; |
59f953a2 | 4295 | |
b3660ef6 | 4296 | h2 = allocate_hash_table (); |
f899c503 GM |
4297 | next = h2->vec_next; |
4298 | bcopy (h1, h2, sizeof *h2); | |
4299 | h2->vec_next = next; | |
4300 | h2->key_and_value = Fcopy_sequence (h1->key_and_value); | |
4301 | h2->hash = Fcopy_sequence (h1->hash); | |
4302 | h2->next = Fcopy_sequence (h1->next); | |
4303 | h2->index = Fcopy_sequence (h1->index); | |
4304 | XSET_HASH_TABLE (table, h2); | |
4305 | ||
4306 | /* Maybe add this hash table to the list of all weak hash tables. */ | |
4307 | if (!NILP (h2->weak)) | |
4308 | { | |
4309 | h2->next_weak = Vweak_hash_tables; | |
4310 | Vweak_hash_tables = table; | |
4311 | } | |
4312 | ||
4313 | return table; | |
4314 | } | |
4315 | ||
4316 | ||
d80c6c11 GM |
4317 | /* Resize hash table H if it's too full. If H cannot be resized |
4318 | because it's already too large, throw an error. */ | |
4319 | ||
4320 | static INLINE void | |
4321 | maybe_resize_hash_table (h) | |
4322 | struct Lisp_Hash_Table *h; | |
4323 | { | |
4324 | if (NILP (h->next_free)) | |
4325 | { | |
4326 | int old_size = HASH_TABLE_SIZE (h); | |
4327 | int i, new_size, index_size; | |
59f953a2 | 4328 | |
d80c6c11 GM |
4329 | if (INTEGERP (h->rehash_size)) |
4330 | new_size = old_size + XFASTINT (h->rehash_size); | |
4331 | else | |
4332 | new_size = old_size * XFLOATINT (h->rehash_size); | |
0d6ba42e | 4333 | new_size = max (old_size + 1, new_size); |
0690cb37 DL |
4334 | index_size = next_almost_prime ((int) |
4335 | (new_size | |
4336 | / XFLOATINT (h->rehash_threshold))); | |
d80c6c11 GM |
4337 | if (max (index_size, 2 * new_size) & ~VALMASK) |
4338 | error ("Hash table too large to resize"); | |
4339 | ||
4340 | h->key_and_value = larger_vector (h->key_and_value, 2 * new_size, Qnil); | |
4341 | h->next = larger_vector (h->next, new_size, Qnil); | |
4342 | h->hash = larger_vector (h->hash, new_size, Qnil); | |
4343 | h->index = Fmake_vector (make_number (index_size), Qnil); | |
4344 | ||
4345 | /* Update the free list. Do it so that new entries are added at | |
4346 | the end of the free list. This makes some operations like | |
4347 | maphash faster. */ | |
4348 | for (i = old_size; i < new_size - 1; ++i) | |
4349 | HASH_NEXT (h, i) = make_number (i + 1); | |
59f953a2 | 4350 | |
d80c6c11 GM |
4351 | if (!NILP (h->next_free)) |
4352 | { | |
4353 | Lisp_Object last, next; | |
59f953a2 | 4354 | |
d80c6c11 GM |
4355 | last = h->next_free; |
4356 | while (next = HASH_NEXT (h, XFASTINT (last)), | |
4357 | !NILP (next)) | |
4358 | last = next; | |
59f953a2 | 4359 | |
d80c6c11 GM |
4360 | HASH_NEXT (h, XFASTINT (last)) = make_number (old_size); |
4361 | } | |
4362 | else | |
4363 | XSETFASTINT (h->next_free, old_size); | |
4364 | ||
4365 | /* Rehash. */ | |
4366 | for (i = 0; i < old_size; ++i) | |
4367 | if (!NILP (HASH_HASH (h, i))) | |
4368 | { | |
4369 | unsigned hash_code = XUINT (HASH_HASH (h, i)); | |
4370 | int start_of_bucket = hash_code % XVECTOR (h->index)->size; | |
4371 | HASH_NEXT (h, i) = HASH_INDEX (h, start_of_bucket); | |
4372 | HASH_INDEX (h, start_of_bucket) = make_number (i); | |
4373 | } | |
59f953a2 | 4374 | } |
d80c6c11 GM |
4375 | } |
4376 | ||
4377 | ||
4378 | /* Lookup KEY in hash table H. If HASH is non-null, return in *HASH | |
4379 | the hash code of KEY. Value is the index of the entry in H | |
4380 | matching KEY, or -1 if not found. */ | |
4381 | ||
4382 | int | |
4383 | hash_lookup (h, key, hash) | |
4384 | struct Lisp_Hash_Table *h; | |
4385 | Lisp_Object key; | |
4386 | unsigned *hash; | |
4387 | { | |
4388 | unsigned hash_code; | |
4389 | int start_of_bucket; | |
4390 | Lisp_Object idx; | |
4391 | ||
4392 | hash_code = h->hashfn (h, key); | |
4393 | if (hash) | |
4394 | *hash = hash_code; | |
59f953a2 | 4395 | |
d80c6c11 GM |
4396 | start_of_bucket = hash_code % XVECTOR (h->index)->size; |
4397 | idx = HASH_INDEX (h, start_of_bucket); | |
4398 | ||
f5c75033 | 4399 | /* We need not gcpro idx since it's either an integer or nil. */ |
d80c6c11 GM |
4400 | while (!NILP (idx)) |
4401 | { | |
4402 | int i = XFASTINT (idx); | |
2e5da676 GM |
4403 | if (EQ (key, HASH_KEY (h, i)) |
4404 | || (h->cmpfn | |
4405 | && h->cmpfn (h, key, hash_code, | |
7c752c80 | 4406 | HASH_KEY (h, i), XUINT (HASH_HASH (h, i))))) |
d80c6c11 GM |
4407 | break; |
4408 | idx = HASH_NEXT (h, i); | |
4409 | } | |
4410 | ||
4411 | return NILP (idx) ? -1 : XFASTINT (idx); | |
4412 | } | |
4413 | ||
4414 | ||
4415 | /* Put an entry into hash table H that associates KEY with VALUE. | |
64a5094a KH |
4416 | HASH is a previously computed hash code of KEY. |
4417 | Value is the index of the entry in H matching KEY. */ | |
d80c6c11 | 4418 | |
64a5094a | 4419 | int |
d80c6c11 GM |
4420 | hash_put (h, key, value, hash) |
4421 | struct Lisp_Hash_Table *h; | |
4422 | Lisp_Object key, value; | |
4423 | unsigned hash; | |
4424 | { | |
4425 | int start_of_bucket, i; | |
4426 | ||
4427 | xassert ((hash & ~VALMASK) == 0); | |
4428 | ||
4429 | /* Increment count after resizing because resizing may fail. */ | |
4430 | maybe_resize_hash_table (h); | |
4431 | h->count = make_number (XFASTINT (h->count) + 1); | |
59f953a2 | 4432 | |
d80c6c11 GM |
4433 | /* Store key/value in the key_and_value vector. */ |
4434 | i = XFASTINT (h->next_free); | |
4435 | h->next_free = HASH_NEXT (h, i); | |
4436 | HASH_KEY (h, i) = key; | |
4437 | HASH_VALUE (h, i) = value; | |
4438 | ||
4439 | /* Remember its hash code. */ | |
4440 | HASH_HASH (h, i) = make_number (hash); | |
4441 | ||
4442 | /* Add new entry to its collision chain. */ | |
4443 | start_of_bucket = hash % XVECTOR (h->index)->size; | |
4444 | HASH_NEXT (h, i) = HASH_INDEX (h, start_of_bucket); | |
4445 | HASH_INDEX (h, start_of_bucket) = make_number (i); | |
64a5094a | 4446 | return i; |
d80c6c11 GM |
4447 | } |
4448 | ||
4449 | ||
4450 | /* Remove the entry matching KEY from hash table H, if there is one. */ | |
4451 | ||
4452 | void | |
4453 | hash_remove (h, key) | |
4454 | struct Lisp_Hash_Table *h; | |
4455 | Lisp_Object key; | |
4456 | { | |
4457 | unsigned hash_code; | |
4458 | int start_of_bucket; | |
4459 | Lisp_Object idx, prev; | |
4460 | ||
4461 | hash_code = h->hashfn (h, key); | |
4462 | start_of_bucket = hash_code % XVECTOR (h->index)->size; | |
4463 | idx = HASH_INDEX (h, start_of_bucket); | |
4464 | prev = Qnil; | |
4465 | ||
f5c75033 | 4466 | /* We need not gcpro idx, prev since they're either integers or nil. */ |
d80c6c11 GM |
4467 | while (!NILP (idx)) |
4468 | { | |
4469 | int i = XFASTINT (idx); | |
4470 | ||
2e5da676 GM |
4471 | if (EQ (key, HASH_KEY (h, i)) |
4472 | || (h->cmpfn | |
4473 | && h->cmpfn (h, key, hash_code, | |
7c752c80 | 4474 | HASH_KEY (h, i), XUINT (HASH_HASH (h, i))))) |
d80c6c11 GM |
4475 | { |
4476 | /* Take entry out of collision chain. */ | |
4477 | if (NILP (prev)) | |
4478 | HASH_INDEX (h, start_of_bucket) = HASH_NEXT (h, i); | |
4479 | else | |
4480 | HASH_NEXT (h, XFASTINT (prev)) = HASH_NEXT (h, i); | |
4481 | ||
4482 | /* Clear slots in key_and_value and add the slots to | |
4483 | the free list. */ | |
4484 | HASH_KEY (h, i) = HASH_VALUE (h, i) = HASH_HASH (h, i) = Qnil; | |
4485 | HASH_NEXT (h, i) = h->next_free; | |
4486 | h->next_free = make_number (i); | |
4487 | h->count = make_number (XFASTINT (h->count) - 1); | |
4488 | xassert (XINT (h->count) >= 0); | |
4489 | break; | |
4490 | } | |
4491 | else | |
4492 | { | |
4493 | prev = idx; | |
4494 | idx = HASH_NEXT (h, i); | |
4495 | } | |
4496 | } | |
4497 | } | |
4498 | ||
4499 | ||
4500 | /* Clear hash table H. */ | |
4501 | ||
4502 | void | |
4503 | hash_clear (h) | |
4504 | struct Lisp_Hash_Table *h; | |
4505 | { | |
4506 | if (XFASTINT (h->count) > 0) | |
4507 | { | |
4508 | int i, size = HASH_TABLE_SIZE (h); | |
4509 | ||
4510 | for (i = 0; i < size; ++i) | |
4511 | { | |
4512 | HASH_NEXT (h, i) = i < size - 1 ? make_number (i + 1) : Qnil; | |
4513 | HASH_KEY (h, i) = Qnil; | |
4514 | HASH_VALUE (h, i) = Qnil; | |
4515 | HASH_HASH (h, i) = Qnil; | |
4516 | } | |
4517 | ||
4518 | for (i = 0; i < XVECTOR (h->index)->size; ++i) | |
4519 | XVECTOR (h->index)->contents[i] = Qnil; | |
4520 | ||
4521 | h->next_free = make_number (0); | |
4522 | h->count = make_number (0); | |
4523 | } | |
4524 | } | |
4525 | ||
4526 | ||
4527 | \f | |
4528 | /************************************************************************ | |
4529 | Weak Hash Tables | |
4530 | ************************************************************************/ | |
4531 | ||
a0b581cc GM |
4532 | /* Sweep weak hash table H. REMOVE_ENTRIES_P non-zero means remove |
4533 | entries from the table that don't survive the current GC. | |
4534 | REMOVE_ENTRIES_P zero means mark entries that are in use. Value is | |
4535 | non-zero if anything was marked. */ | |
4536 | ||
4537 | static int | |
4538 | sweep_weak_table (h, remove_entries_p) | |
4539 | struct Lisp_Hash_Table *h; | |
4540 | int remove_entries_p; | |
4541 | { | |
4542 | int bucket, n, marked; | |
59f953a2 | 4543 | |
a0b581cc GM |
4544 | n = XVECTOR (h->index)->size & ~ARRAY_MARK_FLAG; |
4545 | marked = 0; | |
59f953a2 | 4546 | |
a0b581cc GM |
4547 | for (bucket = 0; bucket < n; ++bucket) |
4548 | { | |
1e546714 | 4549 | Lisp_Object idx, next, prev; |
a0b581cc GM |
4550 | |
4551 | /* Follow collision chain, removing entries that | |
4552 | don't survive this garbage collection. */ | |
a0b581cc | 4553 | prev = Qnil; |
1e546714 | 4554 | for (idx = HASH_INDEX (h, bucket); !GC_NILP (idx); idx = next) |
a0b581cc | 4555 | { |
a0b581cc | 4556 | int i = XFASTINT (idx); |
1e546714 GM |
4557 | int key_known_to_survive_p = survives_gc_p (HASH_KEY (h, i)); |
4558 | int value_known_to_survive_p = survives_gc_p (HASH_VALUE (h, i)); | |
4559 | int remove_p; | |
59f953a2 | 4560 | |
a0b581cc | 4561 | if (EQ (h->weak, Qkey)) |
aee625fa | 4562 | remove_p = !key_known_to_survive_p; |
a0b581cc | 4563 | else if (EQ (h->weak, Qvalue)) |
aee625fa | 4564 | remove_p = !value_known_to_survive_p; |
ec504e6f | 4565 | else if (EQ (h->weak, Qkey_or_value)) |
728c5d9d | 4566 | remove_p = !(key_known_to_survive_p || value_known_to_survive_p); |
ec504e6f | 4567 | else if (EQ (h->weak, Qkey_and_value)) |
728c5d9d | 4568 | remove_p = !(key_known_to_survive_p && value_known_to_survive_p); |
a0b581cc GM |
4569 | else |
4570 | abort (); | |
59f953a2 | 4571 | |
a0b581cc GM |
4572 | next = HASH_NEXT (h, i); |
4573 | ||
4574 | if (remove_entries_p) | |
4575 | { | |
4576 | if (remove_p) | |
4577 | { | |
4578 | /* Take out of collision chain. */ | |
4579 | if (GC_NILP (prev)) | |
1e546714 | 4580 | HASH_INDEX (h, bucket) = next; |
a0b581cc GM |
4581 | else |
4582 | HASH_NEXT (h, XFASTINT (prev)) = next; | |
59f953a2 | 4583 | |
a0b581cc GM |
4584 | /* Add to free list. */ |
4585 | HASH_NEXT (h, i) = h->next_free; | |
4586 | h->next_free = idx; | |
59f953a2 | 4587 | |
a0b581cc GM |
4588 | /* Clear key, value, and hash. */ |
4589 | HASH_KEY (h, i) = HASH_VALUE (h, i) = Qnil; | |
4590 | HASH_HASH (h, i) = Qnil; | |
59f953a2 | 4591 | |
a0b581cc GM |
4592 | h->count = make_number (XFASTINT (h->count) - 1); |
4593 | } | |
4594 | } | |
4595 | else | |
4596 | { | |
4597 | if (!remove_p) | |
4598 | { | |
4599 | /* Make sure key and value survive. */ | |
aee625fa GM |
4600 | if (!key_known_to_survive_p) |
4601 | { | |
4602 | mark_object (&HASH_KEY (h, i)); | |
4603 | marked = 1; | |
4604 | } | |
4605 | ||
4606 | if (!value_known_to_survive_p) | |
4607 | { | |
4608 | mark_object (&HASH_VALUE (h, i)); | |
4609 | marked = 1; | |
4610 | } | |
a0b581cc GM |
4611 | } |
4612 | } | |
a0b581cc GM |
4613 | } |
4614 | } | |
4615 | ||
4616 | return marked; | |
4617 | } | |
4618 | ||
d80c6c11 GM |
4619 | /* Remove elements from weak hash tables that don't survive the |
4620 | current garbage collection. Remove weak tables that don't survive | |
4621 | from Vweak_hash_tables. Called from gc_sweep. */ | |
4622 | ||
4623 | void | |
4624 | sweep_weak_hash_tables () | |
4625 | { | |
ac0e96ee GM |
4626 | Lisp_Object table, used, next; |
4627 | struct Lisp_Hash_Table *h; | |
a0b581cc GM |
4628 | int marked; |
4629 | ||
4630 | /* Mark all keys and values that are in use. Keep on marking until | |
4631 | there is no more change. This is necessary for cases like | |
4632 | value-weak table A containing an entry X -> Y, where Y is used in a | |
4633 | key-weak table B, Z -> Y. If B comes after A in the list of weak | |
4634 | tables, X -> Y might be removed from A, although when looking at B | |
4635 | one finds that it shouldn't. */ | |
4636 | do | |
4637 | { | |
4638 | marked = 0; | |
4639 | for (table = Vweak_hash_tables; !GC_NILP (table); table = h->next_weak) | |
4640 | { | |
4641 | h = XHASH_TABLE (table); | |
4642 | if (h->size & ARRAY_MARK_FLAG) | |
4643 | marked |= sweep_weak_table (h, 0); | |
4644 | } | |
4645 | } | |
4646 | while (marked); | |
d80c6c11 | 4647 | |
a0b581cc | 4648 | /* Remove tables and entries that aren't used. */ |
ac0e96ee | 4649 | for (table = Vweak_hash_tables, used = Qnil; !GC_NILP (table); table = next) |
d80c6c11 | 4650 | { |
d80c6c11 | 4651 | h = XHASH_TABLE (table); |
ac0e96ee GM |
4652 | next = h->next_weak; |
4653 | ||
d80c6c11 GM |
4654 | if (h->size & ARRAY_MARK_FLAG) |
4655 | { | |
ac0e96ee | 4656 | /* TABLE is marked as used. Sweep its contents. */ |
d80c6c11 | 4657 | if (XFASTINT (h->count) > 0) |
a0b581cc | 4658 | sweep_weak_table (h, 1); |
ac0e96ee GM |
4659 | |
4660 | /* Add table to the list of used weak hash tables. */ | |
4661 | h->next_weak = used; | |
4662 | used = table; | |
d80c6c11 GM |
4663 | } |
4664 | } | |
ac0e96ee GM |
4665 | |
4666 | Vweak_hash_tables = used; | |
d80c6c11 GM |
4667 | } |
4668 | ||
4669 | ||
4670 | \f | |
4671 | /*********************************************************************** | |
4672 | Hash Code Computation | |
4673 | ***********************************************************************/ | |
4674 | ||
4675 | /* Maximum depth up to which to dive into Lisp structures. */ | |
4676 | ||
4677 | #define SXHASH_MAX_DEPTH 3 | |
4678 | ||
4679 | /* Maximum length up to which to take list and vector elements into | |
4680 | account. */ | |
4681 | ||
4682 | #define SXHASH_MAX_LEN 7 | |
4683 | ||
4684 | /* Combine two integers X and Y for hashing. */ | |
4685 | ||
4686 | #define SXHASH_COMBINE(X, Y) \ | |
ada0fa14 | 4687 | ((((unsigned)(X) << 4) + (((unsigned)(X) >> 24) & 0x0fffffff)) \ |
d80c6c11 GM |
4688 | + (unsigned)(Y)) |
4689 | ||
4690 | ||
cf681889 GM |
4691 | /* Return a hash for string PTR which has length LEN. The hash |
4692 | code returned is guaranteed to fit in a Lisp integer. */ | |
d80c6c11 GM |
4693 | |
4694 | static unsigned | |
4695 | sxhash_string (ptr, len) | |
4696 | unsigned char *ptr; | |
4697 | int len; | |
4698 | { | |
4699 | unsigned char *p = ptr; | |
4700 | unsigned char *end = p + len; | |
4701 | unsigned char c; | |
4702 | unsigned hash = 0; | |
4703 | ||
4704 | while (p != end) | |
4705 | { | |
4706 | c = *p++; | |
4707 | if (c >= 0140) | |
4708 | c -= 40; | |
4709 | hash = ((hash << 3) + (hash >> 28) + c); | |
4710 | } | |
59f953a2 | 4711 | |
cf681889 | 4712 | return hash & VALMASK; |
d80c6c11 GM |
4713 | } |
4714 | ||
4715 | ||
4716 | /* Return a hash for list LIST. DEPTH is the current depth in the | |
4717 | list. We don't recurse deeper than SXHASH_MAX_DEPTH in it. */ | |
4718 | ||
4719 | static unsigned | |
4720 | sxhash_list (list, depth) | |
4721 | Lisp_Object list; | |
4722 | int depth; | |
4723 | { | |
4724 | unsigned hash = 0; | |
4725 | int i; | |
59f953a2 | 4726 | |
d80c6c11 GM |
4727 | if (depth < SXHASH_MAX_DEPTH) |
4728 | for (i = 0; | |
4729 | CONSP (list) && i < SXHASH_MAX_LEN; | |
4730 | list = XCDR (list), ++i) | |
4731 | { | |
4732 | unsigned hash2 = sxhash (XCAR (list), depth + 1); | |
4733 | hash = SXHASH_COMBINE (hash, hash2); | |
4734 | } | |
4735 | ||
4736 | return hash; | |
4737 | } | |
4738 | ||
4739 | ||
4740 | /* Return a hash for vector VECTOR. DEPTH is the current depth in | |
4741 | the Lisp structure. */ | |
4742 | ||
4743 | static unsigned | |
4744 | sxhash_vector (vec, depth) | |
4745 | Lisp_Object vec; | |
4746 | int depth; | |
4747 | { | |
4748 | unsigned hash = XVECTOR (vec)->size; | |
4749 | int i, n; | |
4750 | ||
4751 | n = min (SXHASH_MAX_LEN, XVECTOR (vec)->size); | |
4752 | for (i = 0; i < n; ++i) | |
4753 | { | |
4754 | unsigned hash2 = sxhash (XVECTOR (vec)->contents[i], depth + 1); | |
4755 | hash = SXHASH_COMBINE (hash, hash2); | |
4756 | } | |
4757 | ||
4758 | return hash; | |
4759 | } | |
4760 | ||
4761 | ||
4762 | /* Return a hash for bool-vector VECTOR. */ | |
4763 | ||
4764 | static unsigned | |
4765 | sxhash_bool_vector (vec) | |
4766 | Lisp_Object vec; | |
4767 | { | |
4768 | unsigned hash = XBOOL_VECTOR (vec)->size; | |
4769 | int i, n; | |
4770 | ||
4771 | n = min (SXHASH_MAX_LEN, XBOOL_VECTOR (vec)->vector_size); | |
4772 | for (i = 0; i < n; ++i) | |
4773 | hash = SXHASH_COMBINE (hash, XBOOL_VECTOR (vec)->data[i]); | |
4774 | ||
4775 | return hash; | |
4776 | } | |
4777 | ||
4778 | ||
4779 | /* Return a hash code for OBJ. DEPTH is the current depth in the Lisp | |
4780 | structure. Value is an unsigned integer clipped to VALMASK. */ | |
4781 | ||
4782 | unsigned | |
4783 | sxhash (obj, depth) | |
4784 | Lisp_Object obj; | |
4785 | int depth; | |
4786 | { | |
4787 | unsigned hash; | |
4788 | ||
4789 | if (depth > SXHASH_MAX_DEPTH) | |
4790 | return 0; | |
59f953a2 | 4791 | |
d80c6c11 GM |
4792 | switch (XTYPE (obj)) |
4793 | { | |
4794 | case Lisp_Int: | |
4795 | hash = XUINT (obj); | |
4796 | break; | |
4797 | ||
4798 | case Lisp_Symbol: | |
c06583e1 KR |
4799 | hash = sxhash_string (XSTRING (SYMBOL_NAME (obj))->data, |
4800 | XSTRING (SYMBOL_NAME (obj))->size); | |
d80c6c11 GM |
4801 | break; |
4802 | ||
4803 | case Lisp_Misc: | |
4804 | hash = XUINT (obj); | |
4805 | break; | |
4806 | ||
4807 | case Lisp_String: | |
4808 | hash = sxhash_string (XSTRING (obj)->data, XSTRING (obj)->size); | |
4809 | break; | |
4810 | ||
4811 | /* This can be everything from a vector to an overlay. */ | |
4812 | case Lisp_Vectorlike: | |
4813 | if (VECTORP (obj)) | |
4814 | /* According to the CL HyperSpec, two arrays are equal only if | |
4815 | they are `eq', except for strings and bit-vectors. In | |
4816 | Emacs, this works differently. We have to compare element | |
4817 | by element. */ | |
4818 | hash = sxhash_vector (obj, depth); | |
4819 | else if (BOOL_VECTOR_P (obj)) | |
4820 | hash = sxhash_bool_vector (obj); | |
4821 | else | |
4822 | /* Others are `equal' if they are `eq', so let's take their | |
4823 | address as hash. */ | |
4824 | hash = XUINT (obj); | |
4825 | break; | |
4826 | ||
4827 | case Lisp_Cons: | |
4828 | hash = sxhash_list (obj, depth); | |
4829 | break; | |
4830 | ||
4831 | case Lisp_Float: | |
4832 | { | |
e84b1dea GM |
4833 | unsigned char *p = (unsigned char *) &XFLOAT_DATA (obj); |
4834 | unsigned char *e = p + sizeof XFLOAT_DATA (obj); | |
d80c6c11 GM |
4835 | for (hash = 0; p < e; ++p) |
4836 | hash = SXHASH_COMBINE (hash, *p); | |
4837 | break; | |
4838 | } | |
4839 | ||
4840 | default: | |
4841 | abort (); | |
4842 | } | |
4843 | ||
4844 | return hash & VALMASK; | |
4845 | } | |
4846 | ||
4847 | ||
4848 | \f | |
4849 | /*********************************************************************** | |
4850 | Lisp Interface | |
4851 | ***********************************************************************/ | |
4852 | ||
4853 | ||
4854 | DEFUN ("sxhash", Fsxhash, Ssxhash, 1, 1, 0, | |
e9d8ddc9 MB |
4855 | doc: /* Compute a hash code for OBJ and return it as integer. */) |
4856 | (obj) | |
d80c6c11 GM |
4857 | Lisp_Object obj; |
4858 | { | |
4859 | unsigned hash = sxhash (obj, 0);; | |
4860 | return make_number (hash); | |
4861 | } | |
4862 | ||
4863 | ||
4864 | DEFUN ("make-hash-table", Fmake_hash_table, Smake_hash_table, 0, MANY, 0, | |
e9d8ddc9 | 4865 | doc: /* Create and return a new hash table. |
47cebab1 GM |
4866 | |
4867 | Arguments are specified as keyword/argument pairs. The following | |
4868 | arguments are defined: | |
4869 | ||
4870 | :test TEST -- TEST must be a symbol that specifies how to compare | |
4871 | keys. Default is `eql'. Predefined are the tests `eq', `eql', and | |
4872 | `equal'. User-supplied test and hash functions can be specified via | |
4873 | `define-hash-table-test'. | |
4874 | ||
4875 | :size SIZE -- A hint as to how many elements will be put in the table. | |
4876 | Default is 65. | |
4877 | ||
4878 | :rehash-size REHASH-SIZE - Indicates how to expand the table when it | |
4879 | fills up. If REHASH-SIZE is an integer, add that many space. If it | |
4880 | is a float, it must be > 1.0, and the new size is computed by | |
4881 | multiplying the old size with that factor. Default is 1.5. | |
4882 | ||
4883 | :rehash-threshold THRESHOLD -- THRESHOLD must a float > 0, and <= 1.0. | |
4884 | Resize the hash table when ratio of the number of entries in the | |
4885 | table. Default is 0.8. | |
4886 | ||
4887 | :weakness WEAK -- WEAK must be one of nil, t, `key', `value', | |
4888 | `key-or-value', or `key-and-value'. If WEAK is not nil, the table | |
4889 | returned is a weak table. Key/value pairs are removed from a weak | |
4890 | hash table when there are no non-weak references pointing to their | |
4891 | key, value, one of key or value, or both key and value, depending on | |
4892 | WEAK. WEAK t is equivalent to `key-and-value'. Default value of WEAK | |
4bf8e2a3 MB |
4893 | is nil. |
4894 | ||
4895 | usage: (make-hash-table &rest KEYWORD-ARGS) */) | |
e9d8ddc9 | 4896 | (nargs, args) |
d80c6c11 GM |
4897 | int nargs; |
4898 | Lisp_Object *args; | |
4899 | { | |
4900 | Lisp_Object test, size, rehash_size, rehash_threshold, weak; | |
4901 | Lisp_Object user_test, user_hash; | |
4902 | char *used; | |
4903 | int i; | |
4904 | ||
4905 | /* The vector `used' is used to keep track of arguments that | |
4906 | have been consumed. */ | |
4907 | used = (char *) alloca (nargs * sizeof *used); | |
4908 | bzero (used, nargs * sizeof *used); | |
4909 | ||
4910 | /* See if there's a `:test TEST' among the arguments. */ | |
4911 | i = get_key_arg (QCtest, nargs, args, used); | |
4912 | test = i < 0 ? Qeql : args[i]; | |
4913 | if (!EQ (test, Qeq) && !EQ (test, Qeql) && !EQ (test, Qequal)) | |
4914 | { | |
4915 | /* See if it is a user-defined test. */ | |
4916 | Lisp_Object prop; | |
59f953a2 | 4917 | |
d80c6c11 | 4918 | prop = Fget (test, Qhash_table_test); |
c1dd95fc | 4919 | if (!CONSP (prop) || !CONSP (XCDR (prop))) |
1fd4c450 | 4920 | Fsignal (Qerror, list2 (build_string ("Invalid hash table test"), |
d80c6c11 | 4921 | test)); |
c1dd95fc RS |
4922 | user_test = XCAR (prop); |
4923 | user_hash = XCAR (XCDR (prop)); | |
d80c6c11 GM |
4924 | } |
4925 | else | |
4926 | user_test = user_hash = Qnil; | |
4927 | ||
4928 | /* See if there's a `:size SIZE' argument. */ | |
4929 | i = get_key_arg (QCsize, nargs, args, used); | |
4930 | size = i < 0 ? make_number (DEFAULT_HASH_SIZE) : args[i]; | |
1fd4c450 | 4931 | if (!INTEGERP (size) || XINT (size) < 0) |
d80c6c11 | 4932 | Fsignal (Qerror, |
1fd4c450 | 4933 | list2 (build_string ("Invalid hash table size"), |
d80c6c11 GM |
4934 | size)); |
4935 | ||
4936 | /* Look for `:rehash-size SIZE'. */ | |
4937 | i = get_key_arg (QCrehash_size, nargs, args, used); | |
4938 | rehash_size = i < 0 ? make_float (DEFAULT_REHASH_SIZE) : args[i]; | |
4939 | if (!NUMBERP (rehash_size) | |
4940 | || (INTEGERP (rehash_size) && XINT (rehash_size) <= 0) | |
4941 | || XFLOATINT (rehash_size) <= 1.0) | |
4942 | Fsignal (Qerror, | |
1fd4c450 | 4943 | list2 (build_string ("Invalid hash table rehash size"), |
d80c6c11 | 4944 | rehash_size)); |
59f953a2 | 4945 | |
d80c6c11 GM |
4946 | /* Look for `:rehash-threshold THRESHOLD'. */ |
4947 | i = get_key_arg (QCrehash_threshold, nargs, args, used); | |
4948 | rehash_threshold = i < 0 ? make_float (DEFAULT_REHASH_THRESHOLD) : args[i]; | |
4949 | if (!FLOATP (rehash_threshold) | |
4950 | || XFLOATINT (rehash_threshold) <= 0.0 | |
4951 | || XFLOATINT (rehash_threshold) > 1.0) | |
4952 | Fsignal (Qerror, | |
1fd4c450 | 4953 | list2 (build_string ("Invalid hash table rehash threshold"), |
d80c6c11 | 4954 | rehash_threshold)); |
59f953a2 | 4955 | |
ee0403b3 GM |
4956 | /* Look for `:weakness WEAK'. */ |
4957 | i = get_key_arg (QCweakness, nargs, args, used); | |
d80c6c11 | 4958 | weak = i < 0 ? Qnil : args[i]; |
ec504e6f GM |
4959 | if (EQ (weak, Qt)) |
4960 | weak = Qkey_and_value; | |
d80c6c11 | 4961 | if (!NILP (weak) |
f899c503 | 4962 | && !EQ (weak, Qkey) |
ec504e6f GM |
4963 | && !EQ (weak, Qvalue) |
4964 | && !EQ (weak, Qkey_or_value) | |
4965 | && !EQ (weak, Qkey_and_value)) | |
1fd4c450 | 4966 | Fsignal (Qerror, list2 (build_string ("Invalid hash table weakness"), |
d80c6c11 | 4967 | weak)); |
59f953a2 | 4968 | |
d80c6c11 GM |
4969 | /* Now, all args should have been used up, or there's a problem. */ |
4970 | for (i = 0; i < nargs; ++i) | |
4971 | if (!used[i]) | |
4972 | Fsignal (Qerror, | |
4973 | list2 (build_string ("Invalid argument list"), args[i])); | |
4974 | ||
4975 | return make_hash_table (test, size, rehash_size, rehash_threshold, weak, | |
4976 | user_test, user_hash); | |
4977 | } | |
4978 | ||
4979 | ||
f899c503 | 4980 | DEFUN ("copy-hash-table", Fcopy_hash_table, Scopy_hash_table, 1, 1, 0, |
e9d8ddc9 MB |
4981 | doc: /* Return a copy of hash table TABLE. */) |
4982 | (table) | |
f899c503 GM |
4983 | Lisp_Object table; |
4984 | { | |
4985 | return copy_hash_table (check_hash_table (table)); | |
4986 | } | |
4987 | ||
4988 | ||
38b5e497 | 4989 | DEFUN ("makehash", Fmakehash, Smakehash, 0, 1, 0, |
e9d8ddc9 | 4990 | doc: /* Create a new hash table. |
47cebab1 GM |
4991 | |
4992 | Optional first argument TEST specifies how to compare keys in the | |
4993 | table. Predefined tests are `eq', `eql', and `equal'. Default is | |
e9d8ddc9 MB |
4994 | `eql'. New tests can be defined with `define-hash-table-test'. */) |
4995 | (test) | |
38b5e497 | 4996 | Lisp_Object test; |
d80c6c11 | 4997 | { |
38b5e497 GM |
4998 | Lisp_Object args[2]; |
4999 | args[0] = QCtest; | |
c7015c4f | 5000 | args[1] = NILP (test) ? Qeql : test; |
38b5e497 | 5001 | return Fmake_hash_table (2, args); |
d80c6c11 GM |
5002 | } |
5003 | ||
5004 | ||
5005 | DEFUN ("hash-table-count", Fhash_table_count, Shash_table_count, 1, 1, 0, | |
e9d8ddc9 MB |
5006 | doc: /* Return the number of elements in TABLE. */) |
5007 | (table) | |
47cebab1 | 5008 | Lisp_Object table; |
d80c6c11 GM |
5009 | { |
5010 | return check_hash_table (table)->count; | |
5011 | } | |
5012 | ||
59f953a2 | 5013 | |
d80c6c11 GM |
5014 | DEFUN ("hash-table-rehash-size", Fhash_table_rehash_size, |
5015 | Shash_table_rehash_size, 1, 1, 0, | |
e9d8ddc9 MB |
5016 | doc: /* Return the current rehash size of TABLE. */) |
5017 | (table) | |
47cebab1 | 5018 | Lisp_Object table; |
d80c6c11 GM |
5019 | { |
5020 | return check_hash_table (table)->rehash_size; | |
5021 | } | |
59f953a2 | 5022 | |
d80c6c11 GM |
5023 | |
5024 | DEFUN ("hash-table-rehash-threshold", Fhash_table_rehash_threshold, | |
5025 | Shash_table_rehash_threshold, 1, 1, 0, | |
e9d8ddc9 MB |
5026 | doc: /* Return the current rehash threshold of TABLE. */) |
5027 | (table) | |
47cebab1 | 5028 | Lisp_Object table; |
d80c6c11 GM |
5029 | { |
5030 | return check_hash_table (table)->rehash_threshold; | |
5031 | } | |
59f953a2 | 5032 | |
d80c6c11 GM |
5033 | |
5034 | DEFUN ("hash-table-size", Fhash_table_size, Shash_table_size, 1, 1, 0, | |
e9d8ddc9 | 5035 | doc: /* Return the size of TABLE. |
47cebab1 GM |
5036 | The size can be used as an argument to `make-hash-table' to create |
5037 | a hash table than can hold as many elements of TABLE holds | |
e9d8ddc9 MB |
5038 | without need for resizing. */) |
5039 | (table) | |
d80c6c11 GM |
5040 | Lisp_Object table; |
5041 | { | |
5042 | struct Lisp_Hash_Table *h = check_hash_table (table); | |
5043 | return make_number (HASH_TABLE_SIZE (h)); | |
5044 | } | |
59f953a2 | 5045 | |
d80c6c11 GM |
5046 | |
5047 | DEFUN ("hash-table-test", Fhash_table_test, Shash_table_test, 1, 1, 0, | |
e9d8ddc9 MB |
5048 | doc: /* Return the test TABLE uses. */) |
5049 | (table) | |
47cebab1 | 5050 | Lisp_Object table; |
d80c6c11 GM |
5051 | { |
5052 | return check_hash_table (table)->test; | |
5053 | } | |
5054 | ||
59f953a2 | 5055 | |
e84b1dea GM |
5056 | DEFUN ("hash-table-weakness", Fhash_table_weakness, Shash_table_weakness, |
5057 | 1, 1, 0, | |
e9d8ddc9 MB |
5058 | doc: /* Return the weakness of TABLE. */) |
5059 | (table) | |
47cebab1 | 5060 | Lisp_Object table; |
d80c6c11 GM |
5061 | { |
5062 | return check_hash_table (table)->weak; | |
5063 | } | |
5064 | ||
59f953a2 | 5065 | |
d80c6c11 | 5066 | DEFUN ("hash-table-p", Fhash_table_p, Shash_table_p, 1, 1, 0, |
e9d8ddc9 MB |
5067 | doc: /* Return t if OBJ is a Lisp hash table object. */) |
5068 | (obj) | |
d80c6c11 GM |
5069 | Lisp_Object obj; |
5070 | { | |
5071 | return HASH_TABLE_P (obj) ? Qt : Qnil; | |
5072 | } | |
5073 | ||
5074 | ||
5075 | DEFUN ("clrhash", Fclrhash, Sclrhash, 1, 1, 0, | |
e9d8ddc9 MB |
5076 | doc: /* Clear hash table TABLE. */) |
5077 | (table) | |
d80c6c11 GM |
5078 | Lisp_Object table; |
5079 | { | |
5080 | hash_clear (check_hash_table (table)); | |
5081 | return Qnil; | |
5082 | } | |
5083 | ||
5084 | ||
5085 | DEFUN ("gethash", Fgethash, Sgethash, 2, 3, 0, | |
e9d8ddc9 MB |
5086 | doc: /* Look up KEY in TABLE and return its associated value. |
5087 | If KEY is not found, return DFLT which defaults to nil. */) | |
5088 | (key, table, dflt) | |
68c45bf0 | 5089 | Lisp_Object key, table, dflt; |
d80c6c11 GM |
5090 | { |
5091 | struct Lisp_Hash_Table *h = check_hash_table (table); | |
5092 | int i = hash_lookup (h, key, NULL); | |
5093 | return i >= 0 ? HASH_VALUE (h, i) : dflt; | |
5094 | } | |
5095 | ||
5096 | ||
5097 | DEFUN ("puthash", Fputhash, Sputhash, 3, 3, 0, | |
e9d8ddc9 | 5098 | doc: /* Associate KEY with VALUE in hash table TABLE. |
47cebab1 | 5099 | If KEY is already present in table, replace its current value with |
e9d8ddc9 MB |
5100 | VALUE. */) |
5101 | (key, value, table) | |
1fffe870 | 5102 | Lisp_Object key, value, table; |
d80c6c11 GM |
5103 | { |
5104 | struct Lisp_Hash_Table *h = check_hash_table (table); | |
5105 | int i; | |
5106 | unsigned hash; | |
5107 | ||
5108 | i = hash_lookup (h, key, &hash); | |
5109 | if (i >= 0) | |
5110 | HASH_VALUE (h, i) = value; | |
5111 | else | |
5112 | hash_put (h, key, value, hash); | |
59f953a2 | 5113 | |
d9c4f922 | 5114 | return value; |
d80c6c11 GM |
5115 | } |
5116 | ||
5117 | ||
5118 | DEFUN ("remhash", Fremhash, Sremhash, 2, 2, 0, | |
e9d8ddc9 MB |
5119 | doc: /* Remove KEY from TABLE. */) |
5120 | (key, table) | |
1fffe870 | 5121 | Lisp_Object key, table; |
d80c6c11 GM |
5122 | { |
5123 | struct Lisp_Hash_Table *h = check_hash_table (table); | |
5124 | hash_remove (h, key); | |
5125 | return Qnil; | |
5126 | } | |
5127 | ||
5128 | ||
5129 | DEFUN ("maphash", Fmaphash, Smaphash, 2, 2, 0, | |
e9d8ddc9 MB |
5130 | doc: /* Call FUNCTION for all entries in hash table TABLE. |
5131 | FUNCTION is called with 2 arguments KEY and VALUE. */) | |
5132 | (function, table) | |
d80c6c11 GM |
5133 | Lisp_Object function, table; |
5134 | { | |
5135 | struct Lisp_Hash_Table *h = check_hash_table (table); | |
5136 | Lisp_Object args[3]; | |
5137 | int i; | |
5138 | ||
5139 | for (i = 0; i < HASH_TABLE_SIZE (h); ++i) | |
5140 | if (!NILP (HASH_HASH (h, i))) | |
5141 | { | |
5142 | args[0] = function; | |
5143 | args[1] = HASH_KEY (h, i); | |
5144 | args[2] = HASH_VALUE (h, i); | |
5145 | Ffuncall (3, args); | |
5146 | } | |
59f953a2 | 5147 | |
d80c6c11 GM |
5148 | return Qnil; |
5149 | } | |
5150 | ||
5151 | ||
5152 | DEFUN ("define-hash-table-test", Fdefine_hash_table_test, | |
5153 | Sdefine_hash_table_test, 3, 3, 0, | |
e9d8ddc9 | 5154 | doc: /* Define a new hash table test with name NAME, a symbol. |
47cebab1 GM |
5155 | |
5156 | In hash tables created with NAME specified as test, use TEST to | |
5157 | compare keys, and HASH for computing hash codes of keys. | |
5158 | ||
5159 | TEST must be a function taking two arguments and returning non-nil if | |
5160 | both arguments are the same. HASH must be a function taking one | |
5161 | argument and return an integer that is the hash code of the argument. | |
5162 | Hash code computation should use the whole value range of integers, | |
e9d8ddc9 MB |
5163 | including negative integers. */) |
5164 | (name, test, hash) | |
d80c6c11 GM |
5165 | Lisp_Object name, test, hash; |
5166 | { | |
5167 | return Fput (name, Qhash_table_test, list2 (test, hash)); | |
5168 | } | |
5169 | ||
a3b210c4 | 5170 | |
57916a7a | 5171 | \f |
5c302da4 GM |
5172 | /************************************************************************ |
5173 | MD5 | |
5174 | ************************************************************************/ | |
5175 | ||
57916a7a | 5176 | #include "md5.h" |
5c302da4 | 5177 | #include "coding.h" |
57916a7a GM |
5178 | |
5179 | DEFUN ("md5", Fmd5, Smd5, 1, 5, 0, | |
e9d8ddc9 | 5180 | doc: /* Return MD5 message digest of OBJECT, a buffer or string. |
47cebab1 GM |
5181 | |
5182 | A message digest is a cryptographic checksum of a document, and the | |
5183 | algorithm to calculate it is defined in RFC 1321. | |
5184 | ||
5185 | The two optional arguments START and END are character positions | |
5186 | specifying for which part of OBJECT the message digest should be | |
5187 | computed. If nil or omitted, the digest is computed for the whole | |
5188 | OBJECT. | |
5189 | ||
5190 | The MD5 message digest is computed from the result of encoding the | |
5191 | text in a coding system, not directly from the internal Emacs form of | |
5192 | the text. The optional fourth argument CODING-SYSTEM specifies which | |
5193 | coding system to encode the text with. It should be the same coding | |
5194 | system that you used or will use when actually writing the text into a | |
5195 | file. | |
5196 | ||
5197 | If CODING-SYSTEM is nil or omitted, the default depends on OBJECT. If | |
5198 | OBJECT is a buffer, the default for CODING-SYSTEM is whatever coding | |
5199 | system would be chosen by default for writing this text into a file. | |
5200 | ||
5201 | If OBJECT is a string, the most preferred coding system (see the | |
5202 | command `prefer-coding-system') is used. | |
5203 | ||
5204 | If NOERROR is non-nil, silently assume the `raw-text' coding if the | |
e9d8ddc9 MB |
5205 | guesswork fails. Normally, an error is signaled in such case. */) |
5206 | (object, start, end, coding_system, noerror) | |
57916a7a GM |
5207 | Lisp_Object object, start, end, coding_system, noerror; |
5208 | { | |
5209 | unsigned char digest[16]; | |
5210 | unsigned char value[33]; | |
5211 | int i; | |
5212 | int size; | |
5213 | int size_byte = 0; | |
5214 | int start_char = 0, end_char = 0; | |
5215 | int start_byte = 0, end_byte = 0; | |
5216 | register int b, e; | |
5217 | register struct buffer *bp; | |
5218 | int temp; | |
5219 | ||
5c302da4 | 5220 | if (STRINGP (object)) |
57916a7a GM |
5221 | { |
5222 | if (NILP (coding_system)) | |
5223 | { | |
5c302da4 | 5224 | /* Decide the coding-system to encode the data with. */ |
57916a7a | 5225 | |
5c302da4 GM |
5226 | if (STRING_MULTIBYTE (object)) |
5227 | /* use default, we can't guess correct value */ | |
f5c1dd0d | 5228 | coding_system = SYMBOL_VALUE (XCAR (Vcoding_category_list)); |
5c302da4 GM |
5229 | else |
5230 | coding_system = Qraw_text; | |
57916a7a | 5231 | } |
5c302da4 GM |
5232 | |
5233 | if (NILP (Fcoding_system_p (coding_system))) | |
57916a7a | 5234 | { |
5c302da4 GM |
5235 | /* Invalid coding system. */ |
5236 | ||
5237 | if (!NILP (noerror)) | |
5238 | coding_system = Qraw_text; | |
5239 | else | |
5240 | while (1) | |
5241 | Fsignal (Qcoding_system_error, Fcons (coding_system, Qnil)); | |
57916a7a GM |
5242 | } |
5243 | ||
5c302da4 GM |
5244 | if (STRING_MULTIBYTE (object)) |
5245 | object = code_convert_string1 (object, coding_system, Qnil, 1); | |
5246 | ||
57916a7a GM |
5247 | size = XSTRING (object)->size; |
5248 | size_byte = STRING_BYTES (XSTRING (object)); | |
5249 | ||
5250 | if (!NILP (start)) | |
5251 | { | |
b7826503 | 5252 | CHECK_NUMBER (start); |
57916a7a GM |
5253 | |
5254 | start_char = XINT (start); | |
5255 | ||
5256 | if (start_char < 0) | |
5257 | start_char += size; | |
5258 | ||
5259 | start_byte = string_char_to_byte (object, start_char); | |
5260 | } | |
5261 | ||
5262 | if (NILP (end)) | |
5263 | { | |
5264 | end_char = size; | |
5265 | end_byte = size_byte; | |
5266 | } | |
5267 | else | |
5268 | { | |
b7826503 | 5269 | CHECK_NUMBER (end); |
57916a7a GM |
5270 | |
5271 | end_char = XINT (end); | |
5272 | ||
5273 | if (end_char < 0) | |
5274 | end_char += size; | |
5275 | ||
5276 | end_byte = string_char_to_byte (object, end_char); | |
5277 | } | |
5278 | ||
5279 | if (!(0 <= start_char && start_char <= end_char && end_char <= size)) | |
5280 | args_out_of_range_3 (object, make_number (start_char), | |
5281 | make_number (end_char)); | |
5282 | } | |
5283 | else | |
5284 | { | |
b7826503 | 5285 | CHECK_BUFFER (object); |
57916a7a GM |
5286 | |
5287 | bp = XBUFFER (object); | |
5288 | ||
5289 | if (NILP (start)) | |
5290 | b = BUF_BEGV (bp); | |
5291 | else | |
5292 | { | |
b7826503 | 5293 | CHECK_NUMBER_COERCE_MARKER (start); |
57916a7a GM |
5294 | b = XINT (start); |
5295 | } | |
5296 | ||
5297 | if (NILP (end)) | |
5298 | e = BUF_ZV (bp); | |
5299 | else | |
5300 | { | |
b7826503 | 5301 | CHECK_NUMBER_COERCE_MARKER (end); |
57916a7a GM |
5302 | e = XINT (end); |
5303 | } | |
5304 | ||
5305 | if (b > e) | |
5306 | temp = b, b = e, e = temp; | |
5307 | ||
5308 | if (!(BUF_BEGV (bp) <= b && e <= BUF_ZV (bp))) | |
5309 | args_out_of_range (start, end); | |
5310 | ||
5311 | if (NILP (coding_system)) | |
5312 | { | |
5c302da4 GM |
5313 | /* Decide the coding-system to encode the data with. |
5314 | See fileio.c:Fwrite-region */ | |
5315 | ||
5316 | if (!NILP (Vcoding_system_for_write)) | |
5317 | coding_system = Vcoding_system_for_write; | |
5318 | else | |
5319 | { | |
5320 | int force_raw_text = 0; | |
5321 | ||
5322 | coding_system = XBUFFER (object)->buffer_file_coding_system; | |
5323 | if (NILP (coding_system) | |
5324 | || NILP (Flocal_variable_p (Qbuffer_file_coding_system, Qnil))) | |
5325 | { | |
5326 | coding_system = Qnil; | |
5327 | if (NILP (current_buffer->enable_multibyte_characters)) | |
5328 | force_raw_text = 1; | |
5329 | } | |
5330 | ||
5331 | if (NILP (coding_system) && !NILP (Fbuffer_file_name(object))) | |
5332 | { | |
5333 | /* Check file-coding-system-alist. */ | |
5334 | Lisp_Object args[4], val; | |
5335 | ||
5336 | args[0] = Qwrite_region; args[1] = start; args[2] = end; | |
5337 | args[3] = Fbuffer_file_name(object); | |
5338 | val = Ffind_operation_coding_system (4, args); | |
5339 | if (CONSP (val) && !NILP (XCDR (val))) | |
5340 | coding_system = XCDR (val); | |
5341 | } | |
5342 | ||
5343 | if (NILP (coding_system) | |
5344 | && !NILP (XBUFFER (object)->buffer_file_coding_system)) | |
5345 | { | |
5346 | /* If we still have not decided a coding system, use the | |
5347 | default value of buffer-file-coding-system. */ | |
5348 | coding_system = XBUFFER (object)->buffer_file_coding_system; | |
5349 | } | |
5350 | ||
5351 | if (!force_raw_text | |
5352 | && !NILP (Ffboundp (Vselect_safe_coding_system_function))) | |
5353 | /* Confirm that VAL can surely encode the current region. */ | |
5354 | coding_system = call3 (Vselect_safe_coding_system_function, | |
70da6a76 KR |
5355 | make_number (b), make_number (e), |
5356 | coding_system); | |
5c302da4 GM |
5357 | |
5358 | if (force_raw_text) | |
5359 | coding_system = Qraw_text; | |
5360 | } | |
5361 | ||
5362 | if (NILP (Fcoding_system_p (coding_system))) | |
57916a7a | 5363 | { |
5c302da4 GM |
5364 | /* Invalid coding system. */ |
5365 | ||
5366 | if (!NILP (noerror)) | |
5367 | coding_system = Qraw_text; | |
5368 | else | |
5369 | while (1) | |
5370 | Fsignal (Qcoding_system_error, Fcons (coding_system, Qnil)); | |
57916a7a GM |
5371 | } |
5372 | } | |
5373 | ||
5374 | object = make_buffer_string (b, e, 0); | |
5375 | ||
5376 | if (STRING_MULTIBYTE (object)) | |
5377 | object = code_convert_string1 (object, coding_system, Qnil, 1); | |
5378 | } | |
5379 | ||
5c302da4 | 5380 | md5_buffer (XSTRING (object)->data + start_byte, |
57916a7a GM |
5381 | STRING_BYTES(XSTRING (object)) - (size_byte - end_byte), |
5382 | digest); | |
5383 | ||
5384 | for (i = 0; i < 16; i++) | |
5c302da4 | 5385 | sprintf (&value[2 * i], "%02x", digest[i]); |
57916a7a GM |
5386 | value[32] = '\0'; |
5387 | ||
5388 | return make_string (value, 32); | |
5389 | } | |
5390 | ||
24c129e4 | 5391 | \f |
dfcf069d | 5392 | void |
7b863bd5 JB |
5393 | syms_of_fns () |
5394 | { | |
d80c6c11 GM |
5395 | /* Hash table stuff. */ |
5396 | Qhash_table_p = intern ("hash-table-p"); | |
5397 | staticpro (&Qhash_table_p); | |
5398 | Qeq = intern ("eq"); | |
5399 | staticpro (&Qeq); | |
5400 | Qeql = intern ("eql"); | |
5401 | staticpro (&Qeql); | |
5402 | Qequal = intern ("equal"); | |
5403 | staticpro (&Qequal); | |
5404 | QCtest = intern (":test"); | |
5405 | staticpro (&QCtest); | |
5406 | QCsize = intern (":size"); | |
5407 | staticpro (&QCsize); | |
5408 | QCrehash_size = intern (":rehash-size"); | |
5409 | staticpro (&QCrehash_size); | |
5410 | QCrehash_threshold = intern (":rehash-threshold"); | |
5411 | staticpro (&QCrehash_threshold); | |
ee0403b3 GM |
5412 | QCweakness = intern (":weakness"); |
5413 | staticpro (&QCweakness); | |
f899c503 GM |
5414 | Qkey = intern ("key"); |
5415 | staticpro (&Qkey); | |
5416 | Qvalue = intern ("value"); | |
5417 | staticpro (&Qvalue); | |
d80c6c11 GM |
5418 | Qhash_table_test = intern ("hash-table-test"); |
5419 | staticpro (&Qhash_table_test); | |
ec504e6f GM |
5420 | Qkey_or_value = intern ("key-or-value"); |
5421 | staticpro (&Qkey_or_value); | |
5422 | Qkey_and_value = intern ("key-and-value"); | |
5423 | staticpro (&Qkey_and_value); | |
d80c6c11 GM |
5424 | |
5425 | defsubr (&Ssxhash); | |
5426 | defsubr (&Smake_hash_table); | |
f899c503 | 5427 | defsubr (&Scopy_hash_table); |
d80c6c11 GM |
5428 | defsubr (&Smakehash); |
5429 | defsubr (&Shash_table_count); | |
5430 | defsubr (&Shash_table_rehash_size); | |
5431 | defsubr (&Shash_table_rehash_threshold); | |
5432 | defsubr (&Shash_table_size); | |
5433 | defsubr (&Shash_table_test); | |
e84b1dea | 5434 | defsubr (&Shash_table_weakness); |
d80c6c11 GM |
5435 | defsubr (&Shash_table_p); |
5436 | defsubr (&Sclrhash); | |
5437 | defsubr (&Sgethash); | |
5438 | defsubr (&Sputhash); | |
5439 | defsubr (&Sremhash); | |
5440 | defsubr (&Smaphash); | |
5441 | defsubr (&Sdefine_hash_table_test); | |
59f953a2 | 5442 | |
7b863bd5 JB |
5443 | Qstring_lessp = intern ("string-lessp"); |
5444 | staticpro (&Qstring_lessp); | |
68732608 RS |
5445 | Qprovide = intern ("provide"); |
5446 | staticpro (&Qprovide); | |
5447 | Qrequire = intern ("require"); | |
5448 | staticpro (&Qrequire); | |
0ce830bc RS |
5449 | Qyes_or_no_p_history = intern ("yes-or-no-p-history"); |
5450 | staticpro (&Qyes_or_no_p_history); | |
eb4ffa4e RS |
5451 | Qcursor_in_echo_area = intern ("cursor-in-echo-area"); |
5452 | staticpro (&Qcursor_in_echo_area); | |
b4f334f7 KH |
5453 | Qwidget_type = intern ("widget-type"); |
5454 | staticpro (&Qwidget_type); | |
7b863bd5 | 5455 | |
09ab3c3b KH |
5456 | staticpro (&string_char_byte_cache_string); |
5457 | string_char_byte_cache_string = Qnil; | |
5458 | ||
1f79789d RS |
5459 | require_nesting_list = Qnil; |
5460 | staticpro (&require_nesting_list); | |
5461 | ||
52a9879b RS |
5462 | Fset (Qyes_or_no_p_history, Qnil); |
5463 | ||
e9d8ddc9 MB |
5464 | DEFVAR_LISP ("features", &Vfeatures, |
5465 | doc: /* A list of symbols which are the features of the executing emacs. | |
47cebab1 | 5466 | Used by `featurep' and `require', and altered by `provide'. */); |
7b863bd5 | 5467 | Vfeatures = Qnil; |
65550192 SM |
5468 | Qsubfeatures = intern ("subfeatures"); |
5469 | staticpro (&Qsubfeatures); | |
7b863bd5 | 5470 | |
e9d8ddc9 MB |
5471 | DEFVAR_BOOL ("use-dialog-box", &use_dialog_box, |
5472 | doc: /* *Non-nil means mouse commands use dialog boxes to ask questions. | |
436fa78b | 5473 | This applies to `y-or-n-p' and `yes-or-no-p' questions asked by commands |
47cebab1 | 5474 | invoked by mouse clicks and mouse menu items. */); |
bdd8d692 RS |
5475 | use_dialog_box = 1; |
5476 | ||
7b863bd5 JB |
5477 | defsubr (&Sidentity); |
5478 | defsubr (&Srandom); | |
5479 | defsubr (&Slength); | |
5a30fab8 | 5480 | defsubr (&Ssafe_length); |
026f59ce | 5481 | defsubr (&Sstring_bytes); |
7b863bd5 | 5482 | defsubr (&Sstring_equal); |
0e1e9f8d | 5483 | defsubr (&Scompare_strings); |
7b863bd5 JB |
5484 | defsubr (&Sstring_lessp); |
5485 | defsubr (&Sappend); | |
5486 | defsubr (&Sconcat); | |
5487 | defsubr (&Svconcat); | |
5488 | defsubr (&Scopy_sequence); | |
09ab3c3b KH |
5489 | defsubr (&Sstring_make_multibyte); |
5490 | defsubr (&Sstring_make_unibyte); | |
6d475204 RS |
5491 | defsubr (&Sstring_as_multibyte); |
5492 | defsubr (&Sstring_as_unibyte); | |
7b863bd5 JB |
5493 | defsubr (&Scopy_alist); |
5494 | defsubr (&Ssubstring); | |
aebf4d42 | 5495 | defsubr (&Ssubstring_no_properties); |
7b863bd5 JB |
5496 | defsubr (&Snthcdr); |
5497 | defsubr (&Snth); | |
5498 | defsubr (&Selt); | |
5499 | defsubr (&Smember); | |
5500 | defsubr (&Smemq); | |
5501 | defsubr (&Sassq); | |
5502 | defsubr (&Sassoc); | |
5503 | defsubr (&Srassq); | |
0fb5a19c | 5504 | defsubr (&Srassoc); |
7b863bd5 | 5505 | defsubr (&Sdelq); |
ca8dd546 | 5506 | defsubr (&Sdelete); |
7b863bd5 JB |
5507 | defsubr (&Snreverse); |
5508 | defsubr (&Sreverse); | |
5509 | defsubr (&Ssort); | |
be9d483d | 5510 | defsubr (&Splist_get); |
7b863bd5 | 5511 | defsubr (&Sget); |
be9d483d | 5512 | defsubr (&Splist_put); |
7b863bd5 | 5513 | defsubr (&Sput); |
aebf4d42 RS |
5514 | defsubr (&Slax_plist_get); |
5515 | defsubr (&Slax_plist_put); | |
7b863bd5 JB |
5516 | defsubr (&Sequal); |
5517 | defsubr (&Sfillarray); | |
999de246 | 5518 | defsubr (&Schar_table_subtype); |
e03f7933 RS |
5519 | defsubr (&Schar_table_parent); |
5520 | defsubr (&Sset_char_table_parent); | |
5521 | defsubr (&Schar_table_extra_slot); | |
5522 | defsubr (&Sset_char_table_extra_slot); | |
999de246 | 5523 | defsubr (&Schar_table_range); |
e03f7933 | 5524 | defsubr (&Sset_char_table_range); |
e1335ba2 | 5525 | defsubr (&Sset_char_table_default); |
52ef6c89 | 5526 | defsubr (&Soptimize_char_table); |
e03f7933 | 5527 | defsubr (&Smap_char_table); |
7b863bd5 JB |
5528 | defsubr (&Snconc); |
5529 | defsubr (&Smapcar); | |
5c6740c9 | 5530 | defsubr (&Smapc); |
7b863bd5 JB |
5531 | defsubr (&Smapconcat); |
5532 | defsubr (&Sy_or_n_p); | |
5533 | defsubr (&Syes_or_no_p); | |
5534 | defsubr (&Sload_average); | |
5535 | defsubr (&Sfeaturep); | |
5536 | defsubr (&Srequire); | |
5537 | defsubr (&Sprovide); | |
a5254817 | 5538 | defsubr (&Splist_member); |
b4f334f7 KH |
5539 | defsubr (&Swidget_put); |
5540 | defsubr (&Swidget_get); | |
5541 | defsubr (&Swidget_apply); | |
24c129e4 KH |
5542 | defsubr (&Sbase64_encode_region); |
5543 | defsubr (&Sbase64_decode_region); | |
5544 | defsubr (&Sbase64_encode_string); | |
5545 | defsubr (&Sbase64_decode_string); | |
57916a7a | 5546 | defsubr (&Smd5); |
7b863bd5 | 5547 | } |
d80c6c11 GM |
5548 | |
5549 | ||
5550 | void | |
5551 | init_fns () | |
5552 | { | |
5553 | Vweak_hash_tables = Qnil; | |
5554 | } |