Commit | Line | Data |
---|---|---|
7b863bd5 | 1 | /* Random utility Lisp functions. |
0b5538bd TTN |
2 | Copyright (C) 1985, 1986, 1987, 1993, 1994, 1995, 1997, |
3 | 1998, 1999, 2000, 2001, 2002, 2003, 2004, | |
78edd3b7 JB |
4 | 2005, 2006, 2007, 2008, 2009, 2010 |
5 | Free Software Foundation, Inc. | |
7b863bd5 JB |
6 | |
7 | This file is part of GNU Emacs. | |
8 | ||
9ec0b715 | 9 | GNU Emacs is free software: you can redistribute it and/or modify |
7b863bd5 | 10 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
11 | the Free Software Foundation, either version 3 of the License, or |
12 | (at your option) any later version. | |
7b863bd5 JB |
13 | |
14 | GNU Emacs is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 20 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
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> |
d7306fe6 | 28 | #include <setjmp.h> |
dfcf069d | 29 | |
7b863bd5 JB |
30 | /* Note on some machines this defines `vector' as a typedef, |
31 | so make sure we don't use that name in this file. */ | |
32 | #undef vector | |
33 | #define vector ***** | |
365fa1b3 | 34 | |
7b863bd5 JB |
35 | #include "lisp.h" |
36 | #include "commands.h" | |
38583a69 | 37 | #include "character.h" |
dec002ca | 38 | #include "coding.h" |
7b863bd5 | 39 | #include "buffer.h" |
f812877e | 40 | #include "keyboard.h" |
8feddab4 | 41 | #include "keymap.h" |
ac811a55 | 42 | #include "intervals.h" |
2d8e7e1f RS |
43 | #include "frame.h" |
44 | #include "window.h" | |
91b11d9d | 45 | #include "blockinput.h" |
3df07ecd YM |
46 | #ifdef HAVE_MENUS |
47 | #if defined (HAVE_X_WINDOWS) | |
dfcf069d AS |
48 | #include "xterm.h" |
49 | #endif | |
2629aa37 | 50 | #endif /* HAVE_MENUS */ |
7b863bd5 | 51 | |
bc937db7 | 52 | #ifndef NULL |
dec002ca | 53 | #define NULL ((POINTER_TYPE *)0) |
bc937db7 KH |
54 | #endif |
55 | ||
bdd8d692 RS |
56 | /* Nonzero enables use of dialog boxes for questions |
57 | asked by mouse commands. */ | |
58 | int use_dialog_box; | |
59 | ||
6b61353c KH |
60 | /* Nonzero enables use of a file dialog for file name |
61 | questions asked by mouse commands. */ | |
62 | int use_file_dialog; | |
63 | ||
68732608 | 64 | Lisp_Object Qstring_lessp, Qprovide, Qrequire; |
0ce830bc | 65 | Lisp_Object Qyes_or_no_p_history; |
eb4ffa4e | 66 | Lisp_Object Qcursor_in_echo_area; |
b4f334f7 | 67 | Lisp_Object Qwidget_type; |
dec002ca | 68 | Lisp_Object Qcodeset, Qdays, Qmonths, Qpaper; |
7b863bd5 | 69 | |
f57e2426 | 70 | static int internal_equal (Lisp_Object , Lisp_Object, int, int); |
49bdcd3e | 71 | |
971de7fb | 72 | extern long get_random (void); |
f57e2426 | 73 | extern void seed_random (long); |
49bdcd3e RS |
74 | |
75 | #ifndef HAVE_UNISTD_H | |
76 | extern long time (); | |
77 | #endif | |
e0f5cf5a | 78 | \f |
7b863bd5 | 79 | DEFUN ("identity", Fidentity, Sidentity, 1, 1, 0, |
ddb67bdc | 80 | doc: /* Return the argument unchanged. */) |
5842a27b | 81 | (Lisp_Object arg) |
7b863bd5 JB |
82 | { |
83 | return arg; | |
84 | } | |
85 | ||
86 | DEFUN ("random", Frandom, Srandom, 0, 1, 0, | |
e9d8ddc9 | 87 | doc: /* Return a pseudo-random number. |
47cebab1 | 88 | All integers representable in Lisp are equally likely. |
6b61353c | 89 | On most systems, this is 29 bits' worth. |
13d62fad JB |
90 | With positive integer LIMIT, return random number in interval [0,LIMIT). |
91 | With argument t, set the random number seed from the current time and pid. | |
92 | Other values of LIMIT are ignored. */) | |
5842a27b | 93 | (Lisp_Object limit) |
7b863bd5 | 94 | { |
e2d6972a KH |
95 | EMACS_INT val; |
96 | Lisp_Object lispy_val; | |
78217ef1 | 97 | unsigned long denominator; |
7b863bd5 | 98 | |
13d62fad | 99 | if (EQ (limit, Qt)) |
e2d6972a | 100 | seed_random (getpid () + time (NULL)); |
13d62fad | 101 | if (NATNUMP (limit) && XFASTINT (limit) != 0) |
7b863bd5 | 102 | { |
4cab5074 KH |
103 | /* Try to take our random number from the higher bits of VAL, |
104 | not the lower, since (says Gentzel) the low bits of `random' | |
105 | are less random than the higher ones. We do this by using the | |
106 | quotient rather than the remainder. At the high end of the RNG | |
88fe8140 | 107 | it's possible to get a quotient larger than n; discarding |
4cab5074 | 108 | these values eliminates the bias that would otherwise appear |
88fe8140 | 109 | when using a large n. */ |
13d62fad | 110 | denominator = ((unsigned long)1 << VALBITS) / XFASTINT (limit); |
4cab5074 | 111 | do |
99175c23 | 112 | val = get_random () / denominator; |
13d62fad | 113 | while (val >= XFASTINT (limit)); |
7b863bd5 | 114 | } |
78217ef1 | 115 | else |
99175c23 | 116 | val = get_random (); |
e2d6972a KH |
117 | XSETINT (lispy_val, val); |
118 | return lispy_val; | |
7b863bd5 JB |
119 | } |
120 | \f | |
121 | /* Random data-structure functions */ | |
122 | ||
123 | DEFUN ("length", Flength, Slength, 1, 1, 0, | |
e9d8ddc9 | 124 | doc: /* Return the length of vector, list or string SEQUENCE. |
47cebab1 | 125 | A byte-code function object is also allowed. |
f5965ada | 126 | If the string contains multibyte characters, this is not necessarily |
47cebab1 | 127 | the number of bytes in the string; it is the number of characters. |
adf2c803 | 128 | To get the number of bytes, use `string-bytes'. */) |
5842a27b | 129 | (register Lisp_Object sequence) |
7b863bd5 | 130 | { |
504f24f1 | 131 | register Lisp_Object val; |
7b863bd5 JB |
132 | register int i; |
133 | ||
88fe8140 | 134 | if (STRINGP (sequence)) |
d5db4077 | 135 | XSETFASTINT (val, SCHARS (sequence)); |
88fe8140 | 136 | else if (VECTORP (sequence)) |
7edbb0da | 137 | XSETFASTINT (val, ASIZE (sequence)); |
88fe8140 | 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)) | |
7edbb0da | 143 | XSETFASTINT (val, ASIZE (sequence) & PSEUDOVECTOR_SIZE_MASK); |
88fe8140 | 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 | ||
89662fc3 | 160 | CHECK_LIST_END (sequence, sequence); |
f2be3671 GM |
161 | |
162 | val = make_number (i); | |
7b863bd5 | 163 | } |
88fe8140 | 164 | else if (NILP (sequence)) |
a2ad3e19 | 165 | XSETFASTINT (val, 0); |
7b863bd5 | 166 | else |
692ae65c | 167 | wrong_type_argument (Qsequencep, sequence); |
89662fc3 | 168 | |
a2ad3e19 | 169 | return val; |
7b863bd5 JB |
170 | } |
171 | ||
12ae7fc6 | 172 | /* This does not check for quits. That is safe since it must terminate. */ |
5a30fab8 RS |
173 | |
174 | DEFUN ("safe-length", Fsafe_length, Ssafe_length, 1, 1, 0, | |
e9d8ddc9 | 175 | doc: /* Return the length of a list, but avoid error or infinite loop. |
47cebab1 GM |
176 | This function never gets an error. If LIST is not really a list, |
177 | it returns 0. If LIST is circular, it returns a finite value | |
adf2c803 | 178 | which is at least the number of distinct elements. */) |
5842a27b | 179 | (Lisp_Object list) |
5a30fab8 RS |
180 | { |
181 | Lisp_Object tail, halftail, length; | |
182 | int len = 0; | |
183 | ||
184 | /* halftail is used to detect circular lists. */ | |
185 | halftail = list; | |
70949dac | 186 | for (tail = list; CONSP (tail); tail = XCDR (tail)) |
5a30fab8 RS |
187 | { |
188 | if (EQ (tail, halftail) && len != 0) | |
cb3d1a0a | 189 | break; |
5a30fab8 | 190 | len++; |
3a61aeb4 | 191 | if ((len & 1) == 0) |
70949dac | 192 | halftail = XCDR (halftail); |
5a30fab8 RS |
193 | } |
194 | ||
195 | XSETINT (length, len); | |
196 | return length; | |
197 | } | |
198 | ||
91f78c99 | 199 | DEFUN ("string-bytes", Fstring_bytes, Sstring_bytes, 1, 1, 0, |
e9d8ddc9 | 200 | doc: /* Return the number of bytes in STRING. |
eeb7eaa8 | 201 | If STRING is multibyte, this may be greater than the length of STRING. */) |
5842a27b | 202 | (Lisp_Object string) |
026f59ce | 203 | { |
b7826503 | 204 | CHECK_STRING (string); |
d5db4077 | 205 | return make_number (SBYTES (string)); |
026f59ce RS |
206 | } |
207 | ||
7b863bd5 | 208 | DEFUN ("string-equal", Fstring_equal, Sstring_equal, 2, 2, 0, |
e9d8ddc9 | 209 | doc: /* Return t if two strings have identical contents. |
47cebab1 | 210 | Case is significant, but text properties are ignored. |
adf2c803 | 211 | Symbols are also allowed; their print names are used instead. */) |
5842a27b | 212 | (register Lisp_Object s1, Lisp_Object s2) |
7b863bd5 | 213 | { |
7650760e | 214 | if (SYMBOLP (s1)) |
c06583e1 | 215 | s1 = SYMBOL_NAME (s1); |
7650760e | 216 | if (SYMBOLP (s2)) |
c06583e1 | 217 | s2 = SYMBOL_NAME (s2); |
b7826503 PJ |
218 | CHECK_STRING (s1); |
219 | CHECK_STRING (s2); | |
7b863bd5 | 220 | |
d5db4077 KR |
221 | if (SCHARS (s1) != SCHARS (s2) |
222 | || SBYTES (s1) != SBYTES (s2) | |
72af86bd | 223 | || memcmp (SDATA (s1), SDATA (s2), SBYTES (s1))) |
7b863bd5 JB |
224 | return Qnil; |
225 | return Qt; | |
226 | } | |
227 | ||
b756c005 JB |
228 | DEFUN ("compare-strings", Fcompare_strings, Scompare_strings, 6, 7, 0, |
229 | doc: /* Compare the contents of two strings, converting to multibyte if needed. | |
47cebab1 GM |
230 | In string STR1, skip the first START1 characters and stop at END1. |
231 | In string STR2, skip the first START2 characters and stop at END2. | |
232 | END1 and END2 default to the full lengths of the respective strings. | |
233 | ||
234 | Case is significant in this comparison if IGNORE-CASE is nil. | |
235 | Unibyte strings are converted to multibyte for comparison. | |
236 | ||
237 | The value is t if the strings (or specified portions) match. | |
238 | If string STR1 is less, the value is a negative number N; | |
239 | - 1 - N is the number of characters that match at the beginning. | |
240 | If string STR1 is greater, the value is a positive number N; | |
adf2c803 | 241 | N - 1 is the number of characters that match at the beginning. */) |
5842a27b | 242 | (Lisp_Object str1, Lisp_Object start1, Lisp_Object end1, Lisp_Object str2, Lisp_Object start2, Lisp_Object end2, Lisp_Object ignore_case) |
0e1e9f8d RS |
243 | { |
244 | register int end1_char, end2_char; | |
245 | register int i1, i1_byte, i2, i2_byte; | |
246 | ||
b7826503 PJ |
247 | CHECK_STRING (str1); |
248 | CHECK_STRING (str2); | |
0e1e9f8d RS |
249 | if (NILP (start1)) |
250 | start1 = make_number (0); | |
251 | if (NILP (start2)) | |
252 | start2 = make_number (0); | |
b7826503 PJ |
253 | CHECK_NATNUM (start1); |
254 | CHECK_NATNUM (start2); | |
0e1e9f8d | 255 | if (! NILP (end1)) |
b7826503 | 256 | CHECK_NATNUM (end1); |
0e1e9f8d | 257 | if (! NILP (end2)) |
b7826503 | 258 | CHECK_NATNUM (end2); |
0e1e9f8d RS |
259 | |
260 | i1 = XINT (start1); | |
261 | i2 = XINT (start2); | |
262 | ||
263 | i1_byte = string_char_to_byte (str1, i1); | |
264 | i2_byte = string_char_to_byte (str2, i2); | |
265 | ||
d5db4077 | 266 | end1_char = SCHARS (str1); |
0e1e9f8d RS |
267 | if (! NILP (end1) && end1_char > XINT (end1)) |
268 | end1_char = XINT (end1); | |
269 | ||
d5db4077 | 270 | end2_char = SCHARS (str2); |
0e1e9f8d RS |
271 | if (! NILP (end2) && end2_char > XINT (end2)) |
272 | end2_char = XINT (end2); | |
273 | ||
274 | while (i1 < end1_char && i2 < end2_char) | |
275 | { | |
276 | /* When we find a mismatch, we must compare the | |
277 | characters, not just the bytes. */ | |
278 | int c1, c2; | |
279 | ||
280 | if (STRING_MULTIBYTE (str1)) | |
2efdd1b9 | 281 | FETCH_STRING_CHAR_ADVANCE_NO_CHECK (c1, str1, i1, i1_byte); |
0e1e9f8d RS |
282 | else |
283 | { | |
d5db4077 | 284 | c1 = SREF (str1, i1++); |
4c0354d7 | 285 | MAKE_CHAR_MULTIBYTE (c1); |
0e1e9f8d RS |
286 | } |
287 | ||
288 | if (STRING_MULTIBYTE (str2)) | |
2efdd1b9 | 289 | FETCH_STRING_CHAR_ADVANCE_NO_CHECK (c2, str2, i2, i2_byte); |
0e1e9f8d RS |
290 | else |
291 | { | |
d5db4077 | 292 | c2 = SREF (str2, i2++); |
4c0354d7 | 293 | MAKE_CHAR_MULTIBYTE (c2); |
0e1e9f8d RS |
294 | } |
295 | ||
296 | if (c1 == c2) | |
297 | continue; | |
298 | ||
299 | if (! NILP (ignore_case)) | |
300 | { | |
301 | Lisp_Object tem; | |
302 | ||
303 | tem = Fupcase (make_number (c1)); | |
304 | c1 = XINT (tem); | |
305 | tem = Fupcase (make_number (c2)); | |
306 | c2 = XINT (tem); | |
307 | } | |
308 | ||
309 | if (c1 == c2) | |
310 | continue; | |
311 | ||
312 | /* Note that I1 has already been incremented | |
313 | past the character that we are comparing; | |
314 | hence we don't add or subtract 1 here. */ | |
315 | if (c1 < c2) | |
60f8d735 | 316 | return make_number (- i1 + XINT (start1)); |
0e1e9f8d | 317 | else |
60f8d735 | 318 | return make_number (i1 - XINT (start1)); |
0e1e9f8d RS |
319 | } |
320 | ||
321 | if (i1 < end1_char) | |
322 | return make_number (i1 - XINT (start1) + 1); | |
323 | if (i2 < end2_char) | |
324 | return make_number (- i1 + XINT (start1) - 1); | |
325 | ||
326 | return Qt; | |
327 | } | |
328 | ||
7b863bd5 | 329 | DEFUN ("string-lessp", Fstring_lessp, Sstring_lessp, 2, 2, 0, |
e9d8ddc9 | 330 | doc: /* Return t if first arg string is less than second in lexicographic order. |
47cebab1 | 331 | Case is significant. |
adf2c803 | 332 | Symbols are also allowed; their print names are used instead. */) |
5842a27b | 333 | (register Lisp_Object s1, Lisp_Object s2) |
7b863bd5 | 334 | { |
7b863bd5 | 335 | register int end; |
09ab3c3b | 336 | register int i1, i1_byte, i2, i2_byte; |
7b863bd5 | 337 | |
7650760e | 338 | if (SYMBOLP (s1)) |
c06583e1 | 339 | s1 = SYMBOL_NAME (s1); |
7650760e | 340 | if (SYMBOLP (s2)) |
c06583e1 | 341 | s2 = SYMBOL_NAME (s2); |
b7826503 PJ |
342 | CHECK_STRING (s1); |
343 | CHECK_STRING (s2); | |
7b863bd5 | 344 | |
09ab3c3b KH |
345 | i1 = i1_byte = i2 = i2_byte = 0; |
346 | ||
d5db4077 KR |
347 | end = SCHARS (s1); |
348 | if (end > SCHARS (s2)) | |
349 | end = SCHARS (s2); | |
7b863bd5 | 350 | |
09ab3c3b | 351 | while (i1 < end) |
7b863bd5 | 352 | { |
09ab3c3b KH |
353 | /* When we find a mismatch, we must compare the |
354 | characters, not just the bytes. */ | |
355 | int c1, c2; | |
356 | ||
2efdd1b9 KH |
357 | FETCH_STRING_CHAR_ADVANCE (c1, s1, i1, i1_byte); |
358 | FETCH_STRING_CHAR_ADVANCE (c2, s2, i2, i2_byte); | |
09ab3c3b KH |
359 | |
360 | if (c1 != c2) | |
361 | return c1 < c2 ? Qt : Qnil; | |
7b863bd5 | 362 | } |
d5db4077 | 363 | return i1 < SCHARS (s2) ? Qt : Qnil; |
7b863bd5 JB |
364 | } |
365 | \f | |
a64df650 AS |
366 | static Lisp_Object concat (int nargs, Lisp_Object *args, |
367 | enum Lisp_Type target_type, int last_special); | |
7b863bd5 JB |
368 | |
369 | /* ARGSUSED */ | |
370 | Lisp_Object | |
971de7fb | 371 | concat2 (Lisp_Object s1, Lisp_Object s2) |
7b863bd5 | 372 | { |
7b863bd5 JB |
373 | Lisp_Object args[2]; |
374 | args[0] = s1; | |
375 | args[1] = s2; | |
376 | return concat (2, args, Lisp_String, 0); | |
7b863bd5 JB |
377 | } |
378 | ||
d4af3687 RS |
379 | /* ARGSUSED */ |
380 | Lisp_Object | |
971de7fb | 381 | concat3 (Lisp_Object s1, Lisp_Object s2, Lisp_Object s3) |
d4af3687 | 382 | { |
d4af3687 RS |
383 | Lisp_Object args[3]; |
384 | args[0] = s1; | |
385 | args[1] = s2; | |
386 | args[2] = s3; | |
387 | return concat (3, args, Lisp_String, 0); | |
d4af3687 RS |
388 | } |
389 | ||
7b863bd5 | 390 | DEFUN ("append", Fappend, Sappend, 0, MANY, 0, |
e9d8ddc9 | 391 | doc: /* Concatenate all the arguments and make the result a list. |
47cebab1 GM |
392 | The result is a list whose elements are the elements of all the arguments. |
393 | Each argument may be a list, vector or string. | |
4bf8e2a3 MB |
394 | The last argument is not copied, just used as the tail of the new list. |
395 | usage: (append &rest SEQUENCES) */) | |
5842a27b | 396 | (int nargs, Lisp_Object *args) |
7b863bd5 JB |
397 | { |
398 | return concat (nargs, args, Lisp_Cons, 1); | |
399 | } | |
400 | ||
401 | DEFUN ("concat", Fconcat, Sconcat, 0, MANY, 0, | |
e9d8ddc9 | 402 | doc: /* Concatenate all the arguments and make the result a string. |
47cebab1 | 403 | The result is a string whose elements are the elements of all the arguments. |
4bf8e2a3 MB |
404 | Each argument may be a string or a list or vector of characters (integers). |
405 | usage: (concat &rest SEQUENCES) */) | |
5842a27b | 406 | (int nargs, Lisp_Object *args) |
7b863bd5 JB |
407 | { |
408 | return concat (nargs, args, Lisp_String, 0); | |
409 | } | |
410 | ||
411 | DEFUN ("vconcat", Fvconcat, Svconcat, 0, MANY, 0, | |
e9d8ddc9 | 412 | doc: /* Concatenate all the arguments and make the result a vector. |
47cebab1 | 413 | The result is a vector whose elements are the elements of all the arguments. |
4bf8e2a3 MB |
414 | Each argument may be a list, vector or string. |
415 | usage: (vconcat &rest SEQUENCES) */) | |
5842a27b | 416 | (int nargs, Lisp_Object *args) |
7b863bd5 | 417 | { |
3e7383eb | 418 | return concat (nargs, args, Lisp_Vectorlike, 0); |
7b863bd5 JB |
419 | } |
420 | ||
3720677d | 421 | |
7b863bd5 | 422 | DEFUN ("copy-sequence", Fcopy_sequence, Scopy_sequence, 1, 1, 0, |
7652ade0 | 423 | doc: /* Return a copy of a list, vector, string or char-table. |
47cebab1 | 424 | The elements of a list or vector are not copied; they are shared |
adf2c803 | 425 | with the original. */) |
5842a27b | 426 | (Lisp_Object arg) |
7b863bd5 | 427 | { |
265a9e55 | 428 | if (NILP (arg)) return arg; |
e03f7933 RS |
429 | |
430 | if (CHAR_TABLE_P (arg)) | |
431 | { | |
38583a69 | 432 | return copy_char_table (arg); |
e03f7933 RS |
433 | } |
434 | ||
435 | if (BOOL_VECTOR_P (arg)) | |
436 | { | |
437 | Lisp_Object val; | |
e03f7933 | 438 | int size_in_chars |
db85986c AS |
439 | = ((XBOOL_VECTOR (arg)->size + BOOL_VECTOR_BITS_PER_CHAR - 1) |
440 | / BOOL_VECTOR_BITS_PER_CHAR); | |
e03f7933 RS |
441 | |
442 | val = Fmake_bool_vector (Flength (arg), Qnil); | |
72af86bd AS |
443 | memcpy (XBOOL_VECTOR (val)->data, XBOOL_VECTOR (arg)->data, |
444 | size_in_chars); | |
e03f7933 RS |
445 | return val; |
446 | } | |
447 | ||
7650760e | 448 | if (!CONSP (arg) && !VECTORP (arg) && !STRINGP (arg)) |
89662fc3 KS |
449 | wrong_type_argument (Qsequencep, arg); |
450 | ||
7b863bd5 JB |
451 | return concat (1, &arg, CONSP (arg) ? Lisp_Cons : XTYPE (arg), 0); |
452 | } | |
453 | ||
2d6115c8 KH |
454 | /* This structure holds information of an argument of `concat' that is |
455 | a string and has text properties to be copied. */ | |
87f0532f | 456 | struct textprop_rec |
2d6115c8 KH |
457 | { |
458 | int argnum; /* refer to ARGS (arguments of `concat') */ | |
459 | int from; /* refer to ARGS[argnum] (argument string) */ | |
460 | int to; /* refer to VAL (the target string) */ | |
461 | }; | |
462 | ||
7b863bd5 | 463 | static Lisp_Object |
971de7fb | 464 | concat (int nargs, Lisp_Object *args, enum Lisp_Type target_type, int last_special) |
7b863bd5 JB |
465 | { |
466 | Lisp_Object val; | |
7b863bd5 JB |
467 | register Lisp_Object tail; |
468 | register Lisp_Object this; | |
469 | int toindex; | |
093386ca | 470 | int toindex_byte = 0; |
ea35ce3d RS |
471 | register int result_len; |
472 | register int result_len_byte; | |
7b863bd5 JB |
473 | register int argnum; |
474 | Lisp_Object last_tail; | |
475 | Lisp_Object prev; | |
ea35ce3d | 476 | int some_multibyte; |
2d6115c8 KH |
477 | /* When we make a multibyte string, we can't copy text properties |
478 | while concatinating each string because the length of resulting | |
479 | string can't be decided until we finish the whole concatination. | |
480 | So, we record strings that have text properties to be copied | |
481 | here, and copy the text properties after the concatination. */ | |
093386ca | 482 | struct textprop_rec *textprops = NULL; |
78edd3b7 | 483 | /* Number of elements in textprops. */ |
87f0532f | 484 | int num_textprops = 0; |
2ec7f67a | 485 | USE_SAFE_ALLOCA; |
7b863bd5 | 486 | |
093386ca GM |
487 | tail = Qnil; |
488 | ||
7b863bd5 JB |
489 | /* In append, the last arg isn't treated like the others */ |
490 | if (last_special && nargs > 0) | |
491 | { | |
492 | nargs--; | |
493 | last_tail = args[nargs]; | |
494 | } | |
495 | else | |
496 | last_tail = Qnil; | |
497 | ||
89662fc3 | 498 | /* Check each argument. */ |
7b863bd5 JB |
499 | for (argnum = 0; argnum < nargs; argnum++) |
500 | { | |
501 | this = args[argnum]; | |
7650760e | 502 | if (!(CONSP (this) || NILP (this) || VECTORP (this) || STRINGP (this) |
e03f7933 | 503 | || COMPILEDP (this) || BOOL_VECTOR_P (this))) |
89662fc3 | 504 | wrong_type_argument (Qsequencep, this); |
7b863bd5 JB |
505 | } |
506 | ||
ea35ce3d RS |
507 | /* Compute total length in chars of arguments in RESULT_LEN. |
508 | If desired output is a string, also compute length in bytes | |
509 | in RESULT_LEN_BYTE, and determine in SOME_MULTIBYTE | |
510 | whether the result should be a multibyte string. */ | |
511 | result_len_byte = 0; | |
512 | result_len = 0; | |
513 | some_multibyte = 0; | |
514 | for (argnum = 0; argnum < nargs; argnum++) | |
7b863bd5 | 515 | { |
ea35ce3d | 516 | int len; |
7b863bd5 | 517 | this = args[argnum]; |
ea35ce3d RS |
518 | len = XFASTINT (Flength (this)); |
519 | if (target_type == Lisp_String) | |
5b6dddaa | 520 | { |
09ab3c3b KH |
521 | /* We must count the number of bytes needed in the string |
522 | as well as the number of characters. */ | |
5b6dddaa KH |
523 | int i; |
524 | Lisp_Object ch; | |
ea35ce3d | 525 | int this_len_byte; |
5b6dddaa | 526 | |
dec58e65 | 527 | if (VECTORP (this)) |
ea35ce3d | 528 | for (i = 0; i < len; i++) |
dec58e65 | 529 | { |
7edbb0da | 530 | ch = AREF (this, i); |
63db3c1b | 531 | CHECK_CHARACTER (ch); |
cc531c44 | 532 | this_len_byte = CHAR_BYTES (XINT (ch)); |
ea35ce3d | 533 | result_len_byte += this_len_byte; |
47cb11b3 | 534 | if (! ASCII_CHAR_P (XINT (ch)) && ! CHAR_BYTE8_P (XINT (ch))) |
ea35ce3d | 535 | some_multibyte = 1; |
dec58e65 | 536 | } |
6d475204 RS |
537 | else if (BOOL_VECTOR_P (this) && XBOOL_VECTOR (this)->size > 0) |
538 | wrong_type_argument (Qintegerp, Faref (this, make_number (0))); | |
ea35ce3d | 539 | else if (CONSP (this)) |
70949dac | 540 | for (; CONSP (this); this = XCDR (this)) |
dec58e65 | 541 | { |
70949dac | 542 | ch = XCAR (this); |
63db3c1b | 543 | CHECK_CHARACTER (ch); |
cc531c44 | 544 | this_len_byte = CHAR_BYTES (XINT (ch)); |
ea35ce3d | 545 | result_len_byte += this_len_byte; |
47cb11b3 | 546 | if (! ASCII_CHAR_P (XINT (ch)) && ! CHAR_BYTE8_P (XINT (ch))) |
ea35ce3d | 547 | some_multibyte = 1; |
dec58e65 | 548 | } |
470730a8 | 549 | else if (STRINGP (this)) |
ea35ce3d | 550 | { |
06f57aa7 | 551 | if (STRING_MULTIBYTE (this)) |
09ab3c3b KH |
552 | { |
553 | some_multibyte = 1; | |
d5db4077 | 554 | result_len_byte += SBYTES (this); |
09ab3c3b KH |
555 | } |
556 | else | |
d5db4077 KR |
557 | result_len_byte += count_size_as_multibyte (SDATA (this), |
558 | SCHARS (this)); | |
ea35ce3d | 559 | } |
5b6dddaa | 560 | } |
ea35ce3d RS |
561 | |
562 | result_len += len; | |
0f75abdf CY |
563 | if (result_len < 0) |
564 | error ("String overflow"); | |
7b863bd5 JB |
565 | } |
566 | ||
09ab3c3b KH |
567 | if (! some_multibyte) |
568 | result_len_byte = result_len; | |
7b863bd5 | 569 | |
ea35ce3d | 570 | /* Create the output object. */ |
7b863bd5 | 571 | if (target_type == Lisp_Cons) |
ea35ce3d | 572 | val = Fmake_list (make_number (result_len), Qnil); |
3e7383eb | 573 | else if (target_type == Lisp_Vectorlike) |
ea35ce3d | 574 | val = Fmake_vector (make_number (result_len), Qnil); |
b10b2daa | 575 | else if (some_multibyte) |
ea35ce3d | 576 | val = make_uninit_multibyte_string (result_len, result_len_byte); |
b10b2daa RS |
577 | else |
578 | val = make_uninit_string (result_len); | |
7b863bd5 | 579 | |
09ab3c3b KH |
580 | /* In `append', if all but last arg are nil, return last arg. */ |
581 | if (target_type == Lisp_Cons && EQ (val, Qnil)) | |
582 | return last_tail; | |
7b863bd5 | 583 | |
ea35ce3d | 584 | /* Copy the contents of the args into the result. */ |
7b863bd5 | 585 | if (CONSP (val)) |
2d6115c8 | 586 | tail = val, toindex = -1; /* -1 in toindex is flag we are making a list */ |
7b863bd5 | 587 | else |
ea35ce3d | 588 | toindex = 0, toindex_byte = 0; |
7b863bd5 JB |
589 | |
590 | prev = Qnil; | |
2d6115c8 | 591 | if (STRINGP (val)) |
2ec7f67a | 592 | SAFE_ALLOCA (textprops, struct textprop_rec *, sizeof (struct textprop_rec) * nargs); |
7b863bd5 JB |
593 | |
594 | for (argnum = 0; argnum < nargs; argnum++) | |
595 | { | |
596 | Lisp_Object thislen; | |
093386ca | 597 | int thisleni = 0; |
de712da3 | 598 | register unsigned int thisindex = 0; |
ea35ce3d | 599 | register unsigned int thisindex_byte = 0; |
7b863bd5 JB |
600 | |
601 | this = args[argnum]; | |
602 | if (!CONSP (this)) | |
603 | thislen = Flength (this), thisleni = XINT (thislen); | |
604 | ||
ea35ce3d RS |
605 | /* Between strings of the same kind, copy fast. */ |
606 | if (STRINGP (this) && STRINGP (val) | |
607 | && STRING_MULTIBYTE (this) == some_multibyte) | |
7b863bd5 | 608 | { |
d5db4077 | 609 | int thislen_byte = SBYTES (this); |
2d6115c8 | 610 | |
72af86bd | 611 | memcpy (SDATA (val) + toindex_byte, SDATA (this), SBYTES (this)); |
d5db4077 | 612 | if (! NULL_INTERVAL_P (STRING_INTERVALS (this))) |
2d6115c8 | 613 | { |
87f0532f | 614 | textprops[num_textprops].argnum = argnum; |
38583a69 | 615 | textprops[num_textprops].from = 0; |
87f0532f | 616 | textprops[num_textprops++].to = toindex; |
2d6115c8 | 617 | } |
ea35ce3d | 618 | toindex_byte += thislen_byte; |
38583a69 | 619 | toindex += thisleni; |
ea35ce3d | 620 | } |
09ab3c3b KH |
621 | /* Copy a single-byte string to a multibyte string. */ |
622 | else if (STRINGP (this) && STRINGP (val)) | |
623 | { | |
d5db4077 | 624 | if (! NULL_INTERVAL_P (STRING_INTERVALS (this))) |
2d6115c8 | 625 | { |
87f0532f KH |
626 | textprops[num_textprops].argnum = argnum; |
627 | textprops[num_textprops].from = 0; | |
628 | textprops[num_textprops++].to = toindex; | |
2d6115c8 | 629 | } |
d5db4077 KR |
630 | toindex_byte += copy_text (SDATA (this), |
631 | SDATA (val) + toindex_byte, | |
632 | SCHARS (this), 0, 1); | |
09ab3c3b KH |
633 | toindex += thisleni; |
634 | } | |
ea35ce3d RS |
635 | else |
636 | /* Copy element by element. */ | |
637 | while (1) | |
638 | { | |
639 | register Lisp_Object elt; | |
640 | ||
641 | /* Fetch next element of `this' arg into `elt', or break if | |
642 | `this' is exhausted. */ | |
643 | if (NILP (this)) break; | |
644 | if (CONSP (this)) | |
70949dac | 645 | elt = XCAR (this), this = XCDR (this); |
6a7df83b RS |
646 | else if (thisindex >= thisleni) |
647 | break; | |
648 | else if (STRINGP (this)) | |
ea35ce3d | 649 | { |
2cef5737 | 650 | int c; |
6a7df83b | 651 | if (STRING_MULTIBYTE (this)) |
ea35ce3d | 652 | { |
2efdd1b9 KH |
653 | FETCH_STRING_CHAR_ADVANCE_NO_CHECK (c, this, |
654 | thisindex, | |
655 | thisindex_byte); | |
6a7df83b | 656 | XSETFASTINT (elt, c); |
ea35ce3d | 657 | } |
6a7df83b | 658 | else |
ea35ce3d | 659 | { |
2a1893f4 | 660 | XSETFASTINT (elt, SREF (this, thisindex)); thisindex++; |
e0e25273 | 661 | if (some_multibyte |
4c0354d7 | 662 | && !ASCII_CHAR_P (XINT (elt)) |
6a7df83b RS |
663 | && XINT (elt) < 0400) |
664 | { | |
4c0354d7 | 665 | c = BYTE8_TO_CHAR (XINT (elt)); |
6a7df83b RS |
666 | XSETINT (elt, c); |
667 | } | |
ea35ce3d | 668 | } |
6a7df83b RS |
669 | } |
670 | else if (BOOL_VECTOR_P (this)) | |
671 | { | |
672 | int byte; | |
db85986c AS |
673 | byte = XBOOL_VECTOR (this)->data[thisindex / BOOL_VECTOR_BITS_PER_CHAR]; |
674 | if (byte & (1 << (thisindex % BOOL_VECTOR_BITS_PER_CHAR))) | |
6a7df83b | 675 | elt = Qt; |
ea35ce3d | 676 | else |
6a7df83b RS |
677 | elt = Qnil; |
678 | thisindex++; | |
ea35ce3d | 679 | } |
6a7df83b | 680 | else |
68b587a6 SM |
681 | { |
682 | elt = AREF (this, thisindex); | |
683 | thisindex++; | |
684 | } | |
7b863bd5 | 685 | |
ea35ce3d RS |
686 | /* Store this element into the result. */ |
687 | if (toindex < 0) | |
7b863bd5 | 688 | { |
f3fbd155 | 689 | XSETCAR (tail, elt); |
ea35ce3d | 690 | prev = tail; |
70949dac | 691 | tail = XCDR (tail); |
7b863bd5 | 692 | } |
ea35ce3d | 693 | else if (VECTORP (val)) |
68b587a6 SM |
694 | { |
695 | ASET (val, toindex, elt); | |
696 | toindex++; | |
697 | } | |
ea35ce3d RS |
698 | else |
699 | { | |
b7826503 | 700 | CHECK_NUMBER (elt); |
38583a69 | 701 | if (some_multibyte) |
8f924df7 KH |
702 | toindex_byte += CHAR_STRING (XINT (elt), |
703 | SDATA (val) + toindex_byte); | |
ea35ce3d | 704 | else |
8f924df7 | 705 | SSET (val, toindex_byte++, XINT (elt)); |
38583a69 | 706 | toindex++; |
ea35ce3d RS |
707 | } |
708 | } | |
7b863bd5 | 709 | } |
265a9e55 | 710 | if (!NILP (prev)) |
f3fbd155 | 711 | XSETCDR (prev, last_tail); |
7b863bd5 | 712 | |
87f0532f | 713 | if (num_textprops > 0) |
2d6115c8 | 714 | { |
33f37824 | 715 | Lisp_Object props; |
3bd00f3b | 716 | int last_to_end = -1; |
33f37824 | 717 | |
87f0532f | 718 | for (argnum = 0; argnum < num_textprops; argnum++) |
2d6115c8 | 719 | { |
87f0532f | 720 | this = args[textprops[argnum].argnum]; |
33f37824 KH |
721 | props = text_property_list (this, |
722 | make_number (0), | |
d5db4077 | 723 | make_number (SCHARS (this)), |
33f37824 KH |
724 | Qnil); |
725 | /* If successive arguments have properites, be sure that the | |
726 | value of `composition' property be the copy. */ | |
3bd00f3b | 727 | if (last_to_end == textprops[argnum].to) |
33f37824 KH |
728 | make_composition_value_copy (props); |
729 | add_text_properties_from_list (val, props, | |
730 | make_number (textprops[argnum].to)); | |
d5db4077 | 731 | last_to_end = textprops[argnum].to + SCHARS (this); |
2d6115c8 KH |
732 | } |
733 | } | |
2ec7f67a KS |
734 | |
735 | SAFE_FREE (); | |
b4f334f7 | 736 | return val; |
7b863bd5 JB |
737 | } |
738 | \f | |
09ab3c3b | 739 | static Lisp_Object string_char_byte_cache_string; |
13818c30 SM |
740 | static EMACS_INT string_char_byte_cache_charpos; |
741 | static EMACS_INT string_char_byte_cache_bytepos; | |
09ab3c3b | 742 | |
57247650 | 743 | void |
971de7fb | 744 | clear_string_char_byte_cache (void) |
57247650 KH |
745 | { |
746 | string_char_byte_cache_string = Qnil; | |
747 | } | |
748 | ||
13818c30 | 749 | /* Return the byte index corresponding to CHAR_INDEX in STRING. */ |
ea35ce3d | 750 | |
13818c30 | 751 | EMACS_INT |
971de7fb | 752 | string_char_to_byte (Lisp_Object string, EMACS_INT char_index) |
ea35ce3d | 753 | { |
13818c30 SM |
754 | EMACS_INT i_byte; |
755 | EMACS_INT best_below, best_below_byte; | |
756 | EMACS_INT best_above, best_above_byte; | |
ea35ce3d | 757 | |
09ab3c3b | 758 | best_below = best_below_byte = 0; |
d5db4077 KR |
759 | best_above = SCHARS (string); |
760 | best_above_byte = SBYTES (string); | |
95ac7579 KH |
761 | if (best_above == best_above_byte) |
762 | return char_index; | |
09ab3c3b KH |
763 | |
764 | if (EQ (string, string_char_byte_cache_string)) | |
765 | { | |
766 | if (string_char_byte_cache_charpos < char_index) | |
767 | { | |
768 | best_below = string_char_byte_cache_charpos; | |
769 | best_below_byte = string_char_byte_cache_bytepos; | |
770 | } | |
771 | else | |
772 | { | |
773 | best_above = string_char_byte_cache_charpos; | |
774 | best_above_byte = string_char_byte_cache_bytepos; | |
775 | } | |
776 | } | |
777 | ||
778 | if (char_index - best_below < best_above - char_index) | |
779 | { | |
8f924df7 | 780 | unsigned char *p = SDATA (string) + best_below_byte; |
38583a69 | 781 | |
09ab3c3b KH |
782 | while (best_below < char_index) |
783 | { | |
38583a69 KH |
784 | p += BYTES_BY_CHAR_HEAD (*p); |
785 | best_below++; | |
09ab3c3b | 786 | } |
8f924df7 | 787 | i_byte = p - SDATA (string); |
09ab3c3b KH |
788 | } |
789 | else | |
ea35ce3d | 790 | { |
8f924df7 | 791 | unsigned char *p = SDATA (string) + best_above_byte; |
38583a69 | 792 | |
09ab3c3b KH |
793 | while (best_above > char_index) |
794 | { | |
38583a69 KH |
795 | p--; |
796 | while (!CHAR_HEAD_P (*p)) p--; | |
09ab3c3b KH |
797 | best_above--; |
798 | } | |
8f924df7 | 799 | i_byte = p - SDATA (string); |
ea35ce3d RS |
800 | } |
801 | ||
09ab3c3b | 802 | string_char_byte_cache_bytepos = i_byte; |
38583a69 | 803 | string_char_byte_cache_charpos = char_index; |
09ab3c3b KH |
804 | string_char_byte_cache_string = string; |
805 | ||
ea35ce3d RS |
806 | return i_byte; |
807 | } | |
09ab3c3b | 808 | \f |
ea35ce3d RS |
809 | /* Return the character index corresponding to BYTE_INDEX in STRING. */ |
810 | ||
13818c30 | 811 | EMACS_INT |
971de7fb | 812 | string_byte_to_char (Lisp_Object string, EMACS_INT byte_index) |
ea35ce3d | 813 | { |
13818c30 SM |
814 | EMACS_INT i, i_byte; |
815 | EMACS_INT best_below, best_below_byte; | |
816 | EMACS_INT best_above, best_above_byte; | |
ea35ce3d | 817 | |
09ab3c3b | 818 | best_below = best_below_byte = 0; |
d5db4077 KR |
819 | best_above = SCHARS (string); |
820 | best_above_byte = SBYTES (string); | |
95ac7579 KH |
821 | if (best_above == best_above_byte) |
822 | return byte_index; | |
09ab3c3b KH |
823 | |
824 | if (EQ (string, string_char_byte_cache_string)) | |
825 | { | |
826 | if (string_char_byte_cache_bytepos < byte_index) | |
827 | { | |
828 | best_below = string_char_byte_cache_charpos; | |
829 | best_below_byte = string_char_byte_cache_bytepos; | |
830 | } | |
831 | else | |
832 | { | |
833 | best_above = string_char_byte_cache_charpos; | |
834 | best_above_byte = string_char_byte_cache_bytepos; | |
835 | } | |
836 | } | |
837 | ||
838 | if (byte_index - best_below_byte < best_above_byte - byte_index) | |
839 | { | |
8f924df7 KH |
840 | unsigned char *p = SDATA (string) + best_below_byte; |
841 | unsigned char *pend = SDATA (string) + byte_index; | |
38583a69 KH |
842 | |
843 | while (p < pend) | |
09ab3c3b | 844 | { |
38583a69 KH |
845 | p += BYTES_BY_CHAR_HEAD (*p); |
846 | best_below++; | |
09ab3c3b KH |
847 | } |
848 | i = best_below; | |
8f924df7 | 849 | i_byte = p - SDATA (string); |
09ab3c3b KH |
850 | } |
851 | else | |
ea35ce3d | 852 | { |
8f924df7 KH |
853 | unsigned char *p = SDATA (string) + best_above_byte; |
854 | unsigned char *pbeg = SDATA (string) + byte_index; | |
38583a69 KH |
855 | |
856 | while (p > pbeg) | |
09ab3c3b | 857 | { |
38583a69 KH |
858 | p--; |
859 | while (!CHAR_HEAD_P (*p)) p--; | |
09ab3c3b KH |
860 | best_above--; |
861 | } | |
862 | i = best_above; | |
8f924df7 | 863 | i_byte = p - SDATA (string); |
ea35ce3d RS |
864 | } |
865 | ||
09ab3c3b KH |
866 | string_char_byte_cache_bytepos = i_byte; |
867 | string_char_byte_cache_charpos = i; | |
868 | string_char_byte_cache_string = string; | |
869 | ||
ea35ce3d RS |
870 | return i; |
871 | } | |
09ab3c3b | 872 | \f |
9d6d303b | 873 | /* Convert STRING to a multibyte string. */ |
ea35ce3d RS |
874 | |
875 | Lisp_Object | |
971de7fb | 876 | string_make_multibyte (Lisp_Object string) |
ea35ce3d RS |
877 | { |
878 | unsigned char *buf; | |
13818c30 | 879 | EMACS_INT nbytes; |
e76ca790 MB |
880 | Lisp_Object ret; |
881 | USE_SAFE_ALLOCA; | |
ea35ce3d RS |
882 | |
883 | if (STRING_MULTIBYTE (string)) | |
884 | return string; | |
885 | ||
d5db4077 KR |
886 | nbytes = count_size_as_multibyte (SDATA (string), |
887 | SCHARS (string)); | |
6d475204 RS |
888 | /* If all the chars are ASCII, they won't need any more bytes |
889 | once converted. In that case, we can return STRING itself. */ | |
d5db4077 | 890 | if (nbytes == SBYTES (string)) |
6d475204 RS |
891 | return string; |
892 | ||
799c08ac | 893 | SAFE_ALLOCA (buf, unsigned char *, nbytes); |
d5db4077 | 894 | copy_text (SDATA (string), buf, SBYTES (string), |
ea35ce3d RS |
895 | 0, 1); |
896 | ||
799c08ac | 897 | ret = make_multibyte_string (buf, SCHARS (string), nbytes); |
233f3db6 | 898 | SAFE_FREE (); |
799c08ac KS |
899 | |
900 | return ret; | |
ea35ce3d RS |
901 | } |
902 | ||
2df18cdb | 903 | |
8f924df7 KH |
904 | /* Convert STRING (if unibyte) to a multibyte string without changing |
905 | the number of characters. Characters 0200 trough 0237 are | |
906 | converted to eight-bit characters. */ | |
2df18cdb KH |
907 | |
908 | Lisp_Object | |
971de7fb | 909 | string_to_multibyte (Lisp_Object string) |
2df18cdb KH |
910 | { |
911 | unsigned char *buf; | |
13818c30 | 912 | EMACS_INT nbytes; |
799c08ac KS |
913 | Lisp_Object ret; |
914 | USE_SAFE_ALLOCA; | |
2df18cdb KH |
915 | |
916 | if (STRING_MULTIBYTE (string)) | |
917 | return string; | |
918 | ||
919 | nbytes = parse_str_to_multibyte (SDATA (string), SBYTES (string)); | |
8f924df7 KH |
920 | /* If all the chars are ASCII, they won't need any more bytes once |
921 | converted. */ | |
2df18cdb | 922 | if (nbytes == SBYTES (string)) |
fb4452cc | 923 | return make_multibyte_string (SDATA (string), nbytes, nbytes); |
2df18cdb | 924 | |
799c08ac | 925 | SAFE_ALLOCA (buf, unsigned char *, nbytes); |
72af86bd | 926 | memcpy (buf, SDATA (string), SBYTES (string)); |
2df18cdb KH |
927 | str_to_multibyte (buf, nbytes, SBYTES (string)); |
928 | ||
799c08ac | 929 | ret = make_multibyte_string (buf, SCHARS (string), nbytes); |
233f3db6 | 930 | SAFE_FREE (); |
799c08ac KS |
931 | |
932 | return ret; | |
2df18cdb KH |
933 | } |
934 | ||
935 | ||
ea35ce3d RS |
936 | /* Convert STRING to a single-byte string. */ |
937 | ||
938 | Lisp_Object | |
971de7fb | 939 | string_make_unibyte (Lisp_Object string) |
ea35ce3d | 940 | { |
799c08ac | 941 | int nchars; |
ea35ce3d | 942 | unsigned char *buf; |
a6cb6b78 | 943 | Lisp_Object ret; |
799c08ac | 944 | USE_SAFE_ALLOCA; |
ea35ce3d RS |
945 | |
946 | if (! STRING_MULTIBYTE (string)) | |
947 | return string; | |
948 | ||
799c08ac | 949 | nchars = SCHARS (string); |
ea35ce3d | 950 | |
799c08ac | 951 | SAFE_ALLOCA (buf, unsigned char *, nchars); |
d5db4077 | 952 | copy_text (SDATA (string), buf, SBYTES (string), |
ea35ce3d RS |
953 | 1, 0); |
954 | ||
799c08ac | 955 | ret = make_unibyte_string (buf, nchars); |
233f3db6 | 956 | SAFE_FREE (); |
a6cb6b78 JD |
957 | |
958 | return ret; | |
ea35ce3d | 959 | } |
09ab3c3b KH |
960 | |
961 | DEFUN ("string-make-multibyte", Fstring_make_multibyte, Sstring_make_multibyte, | |
962 | 1, 1, 0, | |
e9d8ddc9 | 963 | doc: /* Return the multibyte equivalent of STRING. |
6b61353c KH |
964 | If STRING is unibyte and contains non-ASCII characters, the function |
965 | `unibyte-char-to-multibyte' is used to convert each unibyte character | |
966 | to a multibyte character. In this case, the returned string is a | |
967 | newly created string with no text properties. If STRING is multibyte | |
968 | or entirely ASCII, it is returned unchanged. In particular, when | |
969 | STRING is unibyte and entirely ASCII, the returned string is unibyte. | |
970 | \(When the characters are all ASCII, Emacs primitives will treat the | |
971 | string the same way whether it is unibyte or multibyte.) */) | |
5842a27b | 972 | (Lisp_Object string) |
09ab3c3b | 973 | { |
b7826503 | 974 | CHECK_STRING (string); |
aabd38ec | 975 | |
09ab3c3b KH |
976 | return string_make_multibyte (string); |
977 | } | |
978 | ||
979 | DEFUN ("string-make-unibyte", Fstring_make_unibyte, Sstring_make_unibyte, | |
980 | 1, 1, 0, | |
e9d8ddc9 | 981 | doc: /* Return the unibyte equivalent of STRING. |
f8f2fbf9 EZ |
982 | Multibyte character codes are converted to unibyte according to |
983 | `nonascii-translation-table' or, if that is nil, `nonascii-insert-offset'. | |
984 | If the lookup in the translation table fails, this function takes just | |
adf2c803 | 985 | the low 8 bits of each character. */) |
5842a27b | 986 | (Lisp_Object string) |
09ab3c3b | 987 | { |
b7826503 | 988 | CHECK_STRING (string); |
aabd38ec | 989 | |
09ab3c3b KH |
990 | return string_make_unibyte (string); |
991 | } | |
6d475204 RS |
992 | |
993 | DEFUN ("string-as-unibyte", Fstring_as_unibyte, Sstring_as_unibyte, | |
994 | 1, 1, 0, | |
e9d8ddc9 | 995 | doc: /* Return a unibyte string with the same individual bytes as STRING. |
47cebab1 GM |
996 | If STRING is unibyte, the result is STRING itself. |
997 | Otherwise it is a newly created string, with no text properties. | |
998 | If STRING is multibyte and contains a character of charset | |
6b61353c | 999 | `eight-bit', it is converted to the corresponding single byte. */) |
5842a27b | 1000 | (Lisp_Object string) |
6d475204 | 1001 | { |
b7826503 | 1002 | CHECK_STRING (string); |
aabd38ec | 1003 | |
6d475204 RS |
1004 | if (STRING_MULTIBYTE (string)) |
1005 | { | |
d5db4077 | 1006 | int bytes = SBYTES (string); |
2efdd1b9 KH |
1007 | unsigned char *str = (unsigned char *) xmalloc (bytes); |
1008 | ||
72af86bd | 1009 | memcpy (str, SDATA (string), bytes); |
2efdd1b9 KH |
1010 | bytes = str_as_unibyte (str, bytes); |
1011 | string = make_unibyte_string (str, bytes); | |
1012 | xfree (str); | |
6d475204 RS |
1013 | } |
1014 | return string; | |
1015 | } | |
1016 | ||
1017 | DEFUN ("string-as-multibyte", Fstring_as_multibyte, Sstring_as_multibyte, | |
1018 | 1, 1, 0, | |
e9d8ddc9 | 1019 | doc: /* Return a multibyte string with the same individual bytes as STRING. |
47cebab1 GM |
1020 | If STRING is multibyte, the result is STRING itself. |
1021 | Otherwise it is a newly created string, with no text properties. | |
2d5cc537 | 1022 | |
47cebab1 | 1023 | If STRING is unibyte and contains an individual 8-bit byte (i.e. not |
2d5cc537 DL |
1024 | part of a correct utf-8 sequence), it is converted to the corresponding |
1025 | multibyte character of charset `eight-bit'. | |
3100d59f KH |
1026 | See also `string-to-multibyte'. |
1027 | ||
1028 | Beware, this often doesn't really do what you think it does. | |
1029 | It is similar to (decode-coding-string STRING 'utf-8-emacs). | |
1030 | If you're not sure, whether to use `string-as-multibyte' or | |
1031 | `string-to-multibyte', use `string-to-multibyte'. */) | |
5842a27b | 1032 | (Lisp_Object string) |
6d475204 | 1033 | { |
b7826503 | 1034 | CHECK_STRING (string); |
aabd38ec | 1035 | |
6d475204 RS |
1036 | if (! STRING_MULTIBYTE (string)) |
1037 | { | |
2efdd1b9 KH |
1038 | Lisp_Object new_string; |
1039 | int nchars, nbytes; | |
1040 | ||
d5db4077 KR |
1041 | parse_str_as_multibyte (SDATA (string), |
1042 | SBYTES (string), | |
2efdd1b9 KH |
1043 | &nchars, &nbytes); |
1044 | new_string = make_uninit_multibyte_string (nchars, nbytes); | |
72af86bd | 1045 | memcpy (SDATA (new_string), SDATA (string), SBYTES (string)); |
d5db4077 KR |
1046 | if (nbytes != SBYTES (string)) |
1047 | str_as_multibyte (SDATA (new_string), nbytes, | |
1048 | SBYTES (string), NULL); | |
2efdd1b9 | 1049 | string = new_string; |
7a2e5600 | 1050 | STRING_SET_INTERVALS (string, NULL_INTERVAL); |
6d475204 RS |
1051 | } |
1052 | return string; | |
1053 | } | |
2df18cdb KH |
1054 | |
1055 | DEFUN ("string-to-multibyte", Fstring_to_multibyte, Sstring_to_multibyte, | |
1056 | 1, 1, 0, | |
1057 | doc: /* Return a multibyte string with the same individual chars as STRING. | |
9c7a329a | 1058 | If STRING is multibyte, the result is STRING itself. |
2df18cdb | 1059 | Otherwise it is a newly created string, with no text properties. |
88dad6e7 KH |
1060 | |
1061 | If STRING is unibyte and contains an 8-bit byte, it is converted to | |
2d5cc537 DL |
1062 | the corresponding multibyte character of charset `eight-bit'. |
1063 | ||
1064 | This differs from `string-as-multibyte' by converting each byte of a correct | |
1065 | utf-8 sequence to an eight-bit character, not just bytes that don't form a | |
1066 | correct sequence. */) | |
5842a27b | 1067 | (Lisp_Object string) |
2df18cdb KH |
1068 | { |
1069 | CHECK_STRING (string); | |
1070 | ||
1071 | return string_to_multibyte (string); | |
1072 | } | |
1073 | ||
b4480f16 | 1074 | DEFUN ("string-to-unibyte", Fstring_to_unibyte, Sstring_to_unibyte, |
6e8b42de | 1075 | 1, 1, 0, |
b4480f16 KH |
1076 | doc: /* Return a unibyte string with the same individual chars as STRING. |
1077 | If STRING is unibyte, the result is STRING itself. | |
1078 | Otherwise it is a newly created string, with no text properties, | |
1079 | where each `eight-bit' character is converted to the corresponding byte. | |
1080 | If STRING contains a non-ASCII, non-`eight-bit' character, | |
6e8b42de | 1081 | an error is signaled. */) |
5842a27b | 1082 | (Lisp_Object string) |
b4480f16 KH |
1083 | { |
1084 | CHECK_STRING (string); | |
1085 | ||
1086 | if (STRING_MULTIBYTE (string)) | |
1087 | { | |
1088 | EMACS_INT chars = SCHARS (string); | |
1089 | unsigned char *str = (unsigned char *) xmalloc (chars); | |
6e8b42de KH |
1090 | EMACS_INT converted = str_to_unibyte (SDATA (string), str, chars, 0); |
1091 | ||
b4480f16 KH |
1092 | if (converted < chars) |
1093 | error ("Can't convert the %dth character to unibyte", converted); | |
1094 | string = make_unibyte_string (str, chars); | |
1095 | xfree (str); | |
1096 | } | |
1097 | return string; | |
1098 | } | |
1099 | ||
ea35ce3d | 1100 | \f |
7b863bd5 | 1101 | DEFUN ("copy-alist", Fcopy_alist, Scopy_alist, 1, 1, 0, |
e9d8ddc9 | 1102 | doc: /* Return a copy of ALIST. |
47cebab1 GM |
1103 | This is an alist which represents the same mapping from objects to objects, |
1104 | but does not share the alist structure with ALIST. | |
1105 | The objects mapped (cars and cdrs of elements of the alist) | |
1106 | are shared, however. | |
e9d8ddc9 | 1107 | Elements of ALIST that are not conses are also shared. */) |
5842a27b | 1108 | (Lisp_Object alist) |
7b863bd5 JB |
1109 | { |
1110 | register Lisp_Object tem; | |
1111 | ||
b7826503 | 1112 | CHECK_LIST (alist); |
265a9e55 | 1113 | if (NILP (alist)) |
7b863bd5 JB |
1114 | return alist; |
1115 | alist = concat (1, &alist, Lisp_Cons, 0); | |
70949dac | 1116 | for (tem = alist; CONSP (tem); tem = XCDR (tem)) |
7b863bd5 JB |
1117 | { |
1118 | register Lisp_Object car; | |
70949dac | 1119 | car = XCAR (tem); |
7b863bd5 JB |
1120 | |
1121 | if (CONSP (car)) | |
f3fbd155 | 1122 | XSETCAR (tem, Fcons (XCAR (car), XCDR (car))); |
7b863bd5 JB |
1123 | } |
1124 | return alist; | |
1125 | } | |
1126 | ||
1127 | DEFUN ("substring", Fsubstring, Ssubstring, 2, 3, 0, | |
753169bd CY |
1128 | doc: /* Return a new string whose contents are a substring of STRING. |
1129 | The returned string consists of the characters between index FROM | |
1130 | \(inclusive) and index TO (exclusive) of STRING. FROM and TO are | |
1131 | zero-indexed: 0 means the first character of STRING. Negative values | |
1132 | are counted from the end of STRING. If TO is nil, the substring runs | |
1133 | to the end of STRING. | |
1134 | ||
1135 | The STRING argument may also be a vector. In that case, the return | |
1136 | value is a new vector that contains the elements between index FROM | |
1137 | \(inclusive) and index TO (exclusive) of that vector argument. */) | |
5842a27b | 1138 | (Lisp_Object string, register Lisp_Object from, Lisp_Object to) |
7b863bd5 | 1139 | { |
ac811a55 | 1140 | Lisp_Object res; |
21fbc8e5 | 1141 | int size; |
093386ca | 1142 | int size_byte = 0; |
ea35ce3d | 1143 | int from_char, to_char; |
093386ca | 1144 | int from_byte = 0, to_byte = 0; |
21fbc8e5 | 1145 | |
89662fc3 | 1146 | CHECK_VECTOR_OR_STRING (string); |
b7826503 | 1147 | CHECK_NUMBER (from); |
21fbc8e5 RS |
1148 | |
1149 | if (STRINGP (string)) | |
ea35ce3d | 1150 | { |
d5db4077 KR |
1151 | size = SCHARS (string); |
1152 | size_byte = SBYTES (string); | |
ea35ce3d | 1153 | } |
21fbc8e5 | 1154 | else |
7edbb0da | 1155 | size = ASIZE (string); |
21fbc8e5 | 1156 | |
265a9e55 | 1157 | if (NILP (to)) |
ea35ce3d RS |
1158 | { |
1159 | to_char = size; | |
1160 | to_byte = size_byte; | |
1161 | } | |
7b863bd5 | 1162 | else |
ea35ce3d | 1163 | { |
b7826503 | 1164 | CHECK_NUMBER (to); |
ea35ce3d RS |
1165 | |
1166 | to_char = XINT (to); | |
1167 | if (to_char < 0) | |
1168 | to_char += size; | |
1169 | ||
1170 | if (STRINGP (string)) | |
1171 | to_byte = string_char_to_byte (string, to_char); | |
1172 | } | |
1173 | ||
1174 | from_char = XINT (from); | |
1175 | if (from_char < 0) | |
1176 | from_char += size; | |
1177 | if (STRINGP (string)) | |
1178 | from_byte = string_char_to_byte (string, from_char); | |
7b863bd5 | 1179 | |
ea35ce3d RS |
1180 | if (!(0 <= from_char && from_char <= to_char && to_char <= size)) |
1181 | args_out_of_range_3 (string, make_number (from_char), | |
1182 | make_number (to_char)); | |
7b863bd5 | 1183 | |
21fbc8e5 RS |
1184 | if (STRINGP (string)) |
1185 | { | |
d5db4077 | 1186 | res = make_specified_string (SDATA (string) + from_byte, |
b10b2daa RS |
1187 | to_char - from_char, to_byte - from_byte, |
1188 | STRING_MULTIBYTE (string)); | |
21ab867f AS |
1189 | copy_text_properties (make_number (from_char), make_number (to_char), |
1190 | string, make_number (0), res, Qnil); | |
ea35ce3d RS |
1191 | } |
1192 | else | |
7edbb0da | 1193 | res = Fvector (to_char - from_char, &AREF (string, from_char)); |
ea35ce3d RS |
1194 | |
1195 | return res; | |
1196 | } | |
1197 | ||
aebf4d42 RS |
1198 | |
1199 | DEFUN ("substring-no-properties", Fsubstring_no_properties, Ssubstring_no_properties, 1, 3, 0, | |
1200 | doc: /* Return a substring of STRING, without text properties. | |
b756c005 | 1201 | It starts at index FROM and ends before TO. |
aebf4d42 RS |
1202 | TO may be nil or omitted; then the substring runs to the end of STRING. |
1203 | If FROM is nil or omitted, the substring starts at the beginning of STRING. | |
1204 | If FROM or TO is negative, it counts from the end. | |
1205 | ||
1206 | With one argument, just copy STRING without its properties. */) | |
5842a27b | 1207 | (Lisp_Object string, register Lisp_Object from, Lisp_Object to) |
aebf4d42 RS |
1208 | { |
1209 | int size, size_byte; | |
1210 | int from_char, to_char; | |
1211 | int from_byte, to_byte; | |
1212 | ||
1213 | CHECK_STRING (string); | |
1214 | ||
d5db4077 KR |
1215 | size = SCHARS (string); |
1216 | size_byte = SBYTES (string); | |
aebf4d42 RS |
1217 | |
1218 | if (NILP (from)) | |
1219 | from_char = from_byte = 0; | |
1220 | else | |
1221 | { | |
1222 | CHECK_NUMBER (from); | |
1223 | from_char = XINT (from); | |
1224 | if (from_char < 0) | |
1225 | from_char += size; | |
1226 | ||
1227 | from_byte = string_char_to_byte (string, from_char); | |
1228 | } | |
1229 | ||
1230 | if (NILP (to)) | |
1231 | { | |
1232 | to_char = size; | |
1233 | to_byte = size_byte; | |
1234 | } | |
1235 | else | |
1236 | { | |
1237 | CHECK_NUMBER (to); | |
1238 | ||
1239 | to_char = XINT (to); | |
1240 | if (to_char < 0) | |
1241 | to_char += size; | |
1242 | ||
1243 | to_byte = string_char_to_byte (string, to_char); | |
1244 | } | |
1245 | ||
1246 | if (!(0 <= from_char && from_char <= to_char && to_char <= size)) | |
1247 | args_out_of_range_3 (string, make_number (from_char), | |
1248 | make_number (to_char)); | |
1249 | ||
d5db4077 | 1250 | return make_specified_string (SDATA (string) + from_byte, |
aebf4d42 RS |
1251 | to_char - from_char, to_byte - from_byte, |
1252 | STRING_MULTIBYTE (string)); | |
1253 | } | |
1254 | ||
ea35ce3d RS |
1255 | /* Extract a substring of STRING, giving start and end positions |
1256 | both in characters and in bytes. */ | |
1257 | ||
1258 | Lisp_Object | |
971de7fb | 1259 | substring_both (Lisp_Object string, int from, int from_byte, int to, int to_byte) |
ea35ce3d RS |
1260 | { |
1261 | Lisp_Object res; | |
1262 | int size; | |
1263 | int size_byte; | |
1264 | ||
89662fc3 | 1265 | CHECK_VECTOR_OR_STRING (string); |
ea35ce3d RS |
1266 | |
1267 | if (STRINGP (string)) | |
1268 | { | |
d5db4077 KR |
1269 | size = SCHARS (string); |
1270 | size_byte = SBYTES (string); | |
ea35ce3d RS |
1271 | } |
1272 | else | |
7edbb0da | 1273 | size = ASIZE (string); |
ea35ce3d RS |
1274 | |
1275 | if (!(0 <= from && from <= to && to <= size)) | |
1276 | args_out_of_range_3 (string, make_number (from), make_number (to)); | |
1277 | ||
1278 | if (STRINGP (string)) | |
1279 | { | |
d5db4077 | 1280 | res = make_specified_string (SDATA (string) + from_byte, |
b10b2daa RS |
1281 | to - from, to_byte - from_byte, |
1282 | STRING_MULTIBYTE (string)); | |
21ab867f AS |
1283 | copy_text_properties (make_number (from), make_number (to), |
1284 | string, make_number (0), res, Qnil); | |
21fbc8e5 RS |
1285 | } |
1286 | else | |
5ee699a7 | 1287 | res = Fvector (to - from, &AREF (string, from)); |
b4f334f7 | 1288 | |
ac811a55 | 1289 | return res; |
7b863bd5 JB |
1290 | } |
1291 | \f | |
1292 | DEFUN ("nthcdr", Fnthcdr, Snthcdr, 2, 2, 0, | |
b756c005 | 1293 | doc: /* Take cdr N times on LIST, return the result. */) |
5842a27b | 1294 | (Lisp_Object n, Lisp_Object list) |
7b863bd5 JB |
1295 | { |
1296 | register int i, num; | |
b7826503 | 1297 | CHECK_NUMBER (n); |
7b863bd5 | 1298 | num = XINT (n); |
265a9e55 | 1299 | for (i = 0; i < num && !NILP (list); i++) |
7b863bd5 JB |
1300 | { |
1301 | QUIT; | |
89662fc3 | 1302 | CHECK_LIST_CONS (list, list); |
71a8e74b | 1303 | list = XCDR (list); |
7b863bd5 JB |
1304 | } |
1305 | return list; | |
1306 | } | |
1307 | ||
1308 | DEFUN ("nth", Fnth, Snth, 2, 2, 0, | |
e9d8ddc9 MB |
1309 | doc: /* Return the Nth element of LIST. |
1310 | N counts from zero. If LIST is not that long, nil is returned. */) | |
5842a27b | 1311 | (Lisp_Object n, Lisp_Object list) |
7b863bd5 JB |
1312 | { |
1313 | return Fcar (Fnthcdr (n, list)); | |
1314 | } | |
1315 | ||
1316 | DEFUN ("elt", Felt, Selt, 2, 2, 0, | |
e9d8ddc9 | 1317 | doc: /* Return element of SEQUENCE at index N. */) |
5842a27b | 1318 | (register Lisp_Object sequence, Lisp_Object n) |
7b863bd5 | 1319 | { |
b7826503 | 1320 | CHECK_NUMBER (n); |
89662fc3 KS |
1321 | if (CONSP (sequence) || NILP (sequence)) |
1322 | return Fcar (Fnthcdr (n, sequence)); | |
1323 | ||
1324 | /* Faref signals a "not array" error, so check here. */ | |
1325 | CHECK_ARRAY (sequence, Qsequencep); | |
1326 | return Faref (sequence, n); | |
7b863bd5 JB |
1327 | } |
1328 | ||
1329 | DEFUN ("member", Fmember, Smember, 2, 2, 0, | |
b756c005 | 1330 | doc: /* Return non-nil if ELT is an element of LIST. Comparison done with `equal'. |
e9d8ddc9 | 1331 | The value is actually the tail of LIST whose car is ELT. */) |
5842a27b | 1332 | (register Lisp_Object elt, Lisp_Object list) |
7b863bd5 JB |
1333 | { |
1334 | register Lisp_Object tail; | |
9beb8baa | 1335 | for (tail = list; CONSP (tail); tail = XCDR (tail)) |
7b863bd5 JB |
1336 | { |
1337 | register Lisp_Object tem; | |
89662fc3 | 1338 | CHECK_LIST_CONS (tail, list); |
71a8e74b | 1339 | tem = XCAR (tail); |
265a9e55 | 1340 | if (! NILP (Fequal (elt, tem))) |
7b863bd5 JB |
1341 | return tail; |
1342 | QUIT; | |
1343 | } | |
1344 | return Qnil; | |
1345 | } | |
1346 | ||
1347 | DEFUN ("memq", Fmemq, Smemq, 2, 2, 0, | |
b756c005 | 1348 | doc: /* Return non-nil if ELT is an element of LIST. Comparison done with `eq'. |
008ef0ef | 1349 | The value is actually the tail of LIST whose car is ELT. */) |
5842a27b | 1350 | (register Lisp_Object elt, Lisp_Object list) |
7b863bd5 | 1351 | { |
f2be3671 | 1352 | while (1) |
7b863bd5 | 1353 | { |
f2be3671 GM |
1354 | if (!CONSP (list) || EQ (XCAR (list), elt)) |
1355 | break; | |
59f953a2 | 1356 | |
f2be3671 GM |
1357 | list = XCDR (list); |
1358 | if (!CONSP (list) || EQ (XCAR (list), elt)) | |
1359 | break; | |
1360 | ||
1361 | list = XCDR (list); | |
1362 | if (!CONSP (list) || EQ (XCAR (list), elt)) | |
1363 | break; | |
1364 | ||
1365 | list = XCDR (list); | |
7b863bd5 JB |
1366 | QUIT; |
1367 | } | |
f2be3671 | 1368 | |
89662fc3 | 1369 | CHECK_LIST (list); |
f2be3671 | 1370 | return list; |
7b863bd5 JB |
1371 | } |
1372 | ||
008ef0ef | 1373 | DEFUN ("memql", Fmemql, Smemql, 2, 2, 0, |
b756c005 | 1374 | doc: /* Return non-nil if ELT is an element of LIST. Comparison done with `eql'. |
008ef0ef | 1375 | The value is actually the tail of LIST whose car is ELT. */) |
5842a27b | 1376 | (register Lisp_Object elt, Lisp_Object list) |
008ef0ef KS |
1377 | { |
1378 | register Lisp_Object tail; | |
1379 | ||
1380 | if (!FLOATP (elt)) | |
1381 | return Fmemq (elt, list); | |
1382 | ||
9beb8baa | 1383 | for (tail = list; CONSP (tail); tail = XCDR (tail)) |
008ef0ef KS |
1384 | { |
1385 | register Lisp_Object tem; | |
1386 | CHECK_LIST_CONS (tail, list); | |
1387 | tem = XCAR (tail); | |
1388 | if (FLOATP (tem) && internal_equal (elt, tem, 0, 0)) | |
1389 | return tail; | |
1390 | QUIT; | |
1391 | } | |
1392 | return Qnil; | |
1393 | } | |
1394 | ||
7b863bd5 | 1395 | DEFUN ("assq", Fassq, Sassq, 2, 2, 0, |
e9d8ddc9 | 1396 | doc: /* Return non-nil if KEY is `eq' to the car of an element of LIST. |
6b61353c | 1397 | The value is actually the first element of LIST whose car is KEY. |
e9d8ddc9 | 1398 | Elements of LIST that are not conses are ignored. */) |
5842a27b | 1399 | (Lisp_Object key, Lisp_Object list) |
7b863bd5 | 1400 | { |
f2be3671 | 1401 | while (1) |
7b863bd5 | 1402 | { |
f2be3671 GM |
1403 | if (!CONSP (list) |
1404 | || (CONSP (XCAR (list)) | |
1405 | && EQ (XCAR (XCAR (list)), key))) | |
1406 | break; | |
59f953a2 | 1407 | |
f2be3671 GM |
1408 | list = XCDR (list); |
1409 | if (!CONSP (list) | |
1410 | || (CONSP (XCAR (list)) | |
1411 | && EQ (XCAR (XCAR (list)), key))) | |
1412 | break; | |
59f953a2 | 1413 | |
f2be3671 GM |
1414 | list = XCDR (list); |
1415 | if (!CONSP (list) | |
1416 | || (CONSP (XCAR (list)) | |
1417 | && EQ (XCAR (XCAR (list)), key))) | |
1418 | break; | |
59f953a2 | 1419 | |
f2be3671 | 1420 | list = XCDR (list); |
7b863bd5 JB |
1421 | QUIT; |
1422 | } | |
f2be3671 | 1423 | |
89662fc3 | 1424 | return CAR (list); |
7b863bd5 JB |
1425 | } |
1426 | ||
1427 | /* Like Fassq but never report an error and do not allow quits. | |
1428 | Use only on lists known never to be circular. */ | |
1429 | ||
1430 | Lisp_Object | |
971de7fb | 1431 | assq_no_quit (Lisp_Object key, Lisp_Object list) |
7b863bd5 | 1432 | { |
f2be3671 GM |
1433 | while (CONSP (list) |
1434 | && (!CONSP (XCAR (list)) | |
1435 | || !EQ (XCAR (XCAR (list)), key))) | |
1436 | list = XCDR (list); | |
1437 | ||
89662fc3 | 1438 | return CAR_SAFE (list); |
7b863bd5 JB |
1439 | } |
1440 | ||
1441 | DEFUN ("assoc", Fassoc, Sassoc, 2, 2, 0, | |
e9d8ddc9 | 1442 | doc: /* Return non-nil if KEY is `equal' to the car of an element of LIST. |
6b61353c | 1443 | The value is actually the first element of LIST whose car equals KEY. */) |
5842a27b | 1444 | (Lisp_Object key, Lisp_Object list) |
7b863bd5 | 1445 | { |
89662fc3 | 1446 | Lisp_Object car; |
f2be3671 GM |
1447 | |
1448 | while (1) | |
7b863bd5 | 1449 | { |
f2be3671 GM |
1450 | if (!CONSP (list) |
1451 | || (CONSP (XCAR (list)) | |
1452 | && (car = XCAR (XCAR (list)), | |
1453 | EQ (car, key) || !NILP (Fequal (car, key))))) | |
1454 | break; | |
59f953a2 | 1455 | |
f2be3671 GM |
1456 | list = XCDR (list); |
1457 | if (!CONSP (list) | |
1458 | || (CONSP (XCAR (list)) | |
1459 | && (car = XCAR (XCAR (list)), | |
1460 | EQ (car, key) || !NILP (Fequal (car, key))))) | |
1461 | break; | |
59f953a2 | 1462 | |
f2be3671 GM |
1463 | list = XCDR (list); |
1464 | if (!CONSP (list) | |
1465 | || (CONSP (XCAR (list)) | |
1466 | && (car = XCAR (XCAR (list)), | |
1467 | EQ (car, key) || !NILP (Fequal (car, key))))) | |
1468 | break; | |
59f953a2 | 1469 | |
f2be3671 | 1470 | list = XCDR (list); |
7b863bd5 JB |
1471 | QUIT; |
1472 | } | |
f2be3671 | 1473 | |
89662fc3 | 1474 | return CAR (list); |
7b863bd5 JB |
1475 | } |
1476 | ||
86840809 KH |
1477 | /* Like Fassoc but never report an error and do not allow quits. |
1478 | Use only on lists known never to be circular. */ | |
1479 | ||
1480 | Lisp_Object | |
971de7fb | 1481 | assoc_no_quit (Lisp_Object key, Lisp_Object list) |
86840809 KH |
1482 | { |
1483 | while (CONSP (list) | |
1484 | && (!CONSP (XCAR (list)) | |
1485 | || (!EQ (XCAR (XCAR (list)), key) | |
1486 | && NILP (Fequal (XCAR (XCAR (list)), key))))) | |
1487 | list = XCDR (list); | |
1488 | ||
1489 | return CONSP (list) ? XCAR (list) : Qnil; | |
1490 | } | |
1491 | ||
7b863bd5 | 1492 | DEFUN ("rassq", Frassq, Srassq, 2, 2, 0, |
e9d8ddc9 | 1493 | doc: /* Return non-nil if KEY is `eq' to the cdr of an element of LIST. |
6b61353c | 1494 | The value is actually the first element of LIST whose cdr is KEY. */) |
5842a27b | 1495 | (register Lisp_Object key, Lisp_Object list) |
7b863bd5 | 1496 | { |
f2be3671 | 1497 | while (1) |
7b863bd5 | 1498 | { |
f2be3671 GM |
1499 | if (!CONSP (list) |
1500 | || (CONSP (XCAR (list)) | |
1501 | && EQ (XCDR (XCAR (list)), key))) | |
1502 | break; | |
59f953a2 | 1503 | |
f2be3671 GM |
1504 | list = XCDR (list); |
1505 | if (!CONSP (list) | |
1506 | || (CONSP (XCAR (list)) | |
1507 | && EQ (XCDR (XCAR (list)), key))) | |
1508 | break; | |
59f953a2 | 1509 | |
f2be3671 GM |
1510 | list = XCDR (list); |
1511 | if (!CONSP (list) | |
1512 | || (CONSP (XCAR (list)) | |
1513 | && EQ (XCDR (XCAR (list)), key))) | |
1514 | break; | |
59f953a2 | 1515 | |
f2be3671 | 1516 | list = XCDR (list); |
7b863bd5 JB |
1517 | QUIT; |
1518 | } | |
f2be3671 | 1519 | |
89662fc3 | 1520 | return CAR (list); |
7b863bd5 | 1521 | } |
0fb5a19c RS |
1522 | |
1523 | DEFUN ("rassoc", Frassoc, Srassoc, 2, 2, 0, | |
e9d8ddc9 | 1524 | doc: /* Return non-nil if KEY is `equal' to the cdr of an element of LIST. |
6b61353c | 1525 | The value is actually the first element of LIST whose cdr equals KEY. */) |
5842a27b | 1526 | (Lisp_Object key, Lisp_Object list) |
0fb5a19c | 1527 | { |
89662fc3 | 1528 | Lisp_Object cdr; |
f2be3671 GM |
1529 | |
1530 | while (1) | |
0fb5a19c | 1531 | { |
f2be3671 GM |
1532 | if (!CONSP (list) |
1533 | || (CONSP (XCAR (list)) | |
1534 | && (cdr = XCDR (XCAR (list)), | |
1535 | EQ (cdr, key) || !NILP (Fequal (cdr, key))))) | |
1536 | break; | |
59f953a2 | 1537 | |
f2be3671 GM |
1538 | list = XCDR (list); |
1539 | if (!CONSP (list) | |
1540 | || (CONSP (XCAR (list)) | |
1541 | && (cdr = XCDR (XCAR (list)), | |
1542 | EQ (cdr, key) || !NILP (Fequal (cdr, key))))) | |
1543 | break; | |
59f953a2 | 1544 | |
f2be3671 GM |
1545 | list = XCDR (list); |
1546 | if (!CONSP (list) | |
1547 | || (CONSP (XCAR (list)) | |
1548 | && (cdr = XCDR (XCAR (list)), | |
1549 | EQ (cdr, key) || !NILP (Fequal (cdr, key))))) | |
1550 | break; | |
59f953a2 | 1551 | |
f2be3671 | 1552 | list = XCDR (list); |
0fb5a19c RS |
1553 | QUIT; |
1554 | } | |
f2be3671 | 1555 | |
89662fc3 | 1556 | return CAR (list); |
0fb5a19c | 1557 | } |
7b863bd5 JB |
1558 | \f |
1559 | DEFUN ("delq", Fdelq, Sdelq, 2, 2, 0, | |
e9d8ddc9 | 1560 | doc: /* Delete by side effect any occurrences of ELT as a member of LIST. |
47cebab1 GM |
1561 | The modified LIST is returned. Comparison is done with `eq'. |
1562 | If the first member of LIST is ELT, there is no way to remove it by side effect; | |
1563 | therefore, write `(setq foo (delq element foo))' | |
e9d8ddc9 | 1564 | to be sure of changing the value of `foo'. */) |
5842a27b | 1565 | (register Lisp_Object elt, Lisp_Object list) |
7b863bd5 JB |
1566 | { |
1567 | register Lisp_Object tail, prev; | |
1568 | register Lisp_Object tem; | |
1569 | ||
1570 | tail = list; | |
1571 | prev = Qnil; | |
265a9e55 | 1572 | while (!NILP (tail)) |
7b863bd5 | 1573 | { |
89662fc3 | 1574 | CHECK_LIST_CONS (tail, list); |
71a8e74b | 1575 | tem = XCAR (tail); |
7b863bd5 JB |
1576 | if (EQ (elt, tem)) |
1577 | { | |
265a9e55 | 1578 | if (NILP (prev)) |
70949dac | 1579 | list = XCDR (tail); |
7b863bd5 | 1580 | else |
70949dac | 1581 | Fsetcdr (prev, XCDR (tail)); |
7b863bd5 JB |
1582 | } |
1583 | else | |
1584 | prev = tail; | |
70949dac | 1585 | tail = XCDR (tail); |
7b863bd5 JB |
1586 | QUIT; |
1587 | } | |
1588 | return list; | |
1589 | } | |
1590 | ||
ca8dd546 | 1591 | DEFUN ("delete", Fdelete, Sdelete, 2, 2, 0, |
e9d8ddc9 | 1592 | doc: /* Delete by side effect any occurrences of ELT as a member of SEQ. |
47cebab1 GM |
1593 | SEQ must be a list, a vector, or a string. |
1594 | The modified SEQ is returned. Comparison is done with `equal'. | |
1595 | If SEQ is not a list, or the first member of SEQ is ELT, deleting it | |
1596 | is not a side effect; it is simply using a different sequence. | |
1597 | Therefore, write `(setq foo (delete element foo))' | |
e9d8ddc9 | 1598 | to be sure of changing the value of `foo'. */) |
5842a27b | 1599 | (Lisp_Object elt, Lisp_Object seq) |
1e134a5f | 1600 | { |
e517f19d GM |
1601 | if (VECTORP (seq)) |
1602 | { | |
504f24f1 | 1603 | EMACS_INT i, n; |
1e134a5f | 1604 | |
e517f19d GM |
1605 | for (i = n = 0; i < ASIZE (seq); ++i) |
1606 | if (NILP (Fequal (AREF (seq, i), elt))) | |
1607 | ++n; | |
1608 | ||
1609 | if (n != ASIZE (seq)) | |
1610 | { | |
b3660ef6 | 1611 | struct Lisp_Vector *p = allocate_vector (n); |
59f953a2 | 1612 | |
e517f19d GM |
1613 | for (i = n = 0; i < ASIZE (seq); ++i) |
1614 | if (NILP (Fequal (AREF (seq, i), elt))) | |
1615 | p->contents[n++] = AREF (seq, i); | |
1616 | ||
e517f19d GM |
1617 | XSETVECTOR (seq, p); |
1618 | } | |
1619 | } | |
1620 | else if (STRINGP (seq)) | |
1e134a5f | 1621 | { |
e517f19d GM |
1622 | EMACS_INT i, ibyte, nchars, nbytes, cbytes; |
1623 | int c; | |
1624 | ||
1625 | for (i = nchars = nbytes = ibyte = 0; | |
d5db4077 | 1626 | i < SCHARS (seq); |
e517f19d | 1627 | ++i, ibyte += cbytes) |
1e134a5f | 1628 | { |
e517f19d GM |
1629 | if (STRING_MULTIBYTE (seq)) |
1630 | { | |
62a6e103 | 1631 | c = STRING_CHAR (SDATA (seq) + ibyte); |
e517f19d GM |
1632 | cbytes = CHAR_BYTES (c); |
1633 | } | |
1e134a5f | 1634 | else |
e517f19d | 1635 | { |
d5db4077 | 1636 | c = SREF (seq, i); |
e517f19d GM |
1637 | cbytes = 1; |
1638 | } | |
59f953a2 | 1639 | |
e517f19d GM |
1640 | if (!INTEGERP (elt) || c != XINT (elt)) |
1641 | { | |
1642 | ++nchars; | |
1643 | nbytes += cbytes; | |
1644 | } | |
1645 | } | |
1646 | ||
d5db4077 | 1647 | if (nchars != SCHARS (seq)) |
e517f19d GM |
1648 | { |
1649 | Lisp_Object tem; | |
1650 | ||
1651 | tem = make_uninit_multibyte_string (nchars, nbytes); | |
1652 | if (!STRING_MULTIBYTE (seq)) | |
d5db4077 | 1653 | STRING_SET_UNIBYTE (tem); |
59f953a2 | 1654 | |
e517f19d | 1655 | for (i = nchars = nbytes = ibyte = 0; |
d5db4077 | 1656 | i < SCHARS (seq); |
e517f19d GM |
1657 | ++i, ibyte += cbytes) |
1658 | { | |
1659 | if (STRING_MULTIBYTE (seq)) | |
1660 | { | |
62a6e103 | 1661 | c = STRING_CHAR (SDATA (seq) + ibyte); |
e517f19d GM |
1662 | cbytes = CHAR_BYTES (c); |
1663 | } | |
1664 | else | |
1665 | { | |
d5db4077 | 1666 | c = SREF (seq, i); |
e517f19d GM |
1667 | cbytes = 1; |
1668 | } | |
59f953a2 | 1669 | |
e517f19d GM |
1670 | if (!INTEGERP (elt) || c != XINT (elt)) |
1671 | { | |
08663750 KR |
1672 | unsigned char *from = SDATA (seq) + ibyte; |
1673 | unsigned char *to = SDATA (tem) + nbytes; | |
e517f19d | 1674 | EMACS_INT n; |
59f953a2 | 1675 | |
e517f19d GM |
1676 | ++nchars; |
1677 | nbytes += cbytes; | |
59f953a2 | 1678 | |
e517f19d GM |
1679 | for (n = cbytes; n--; ) |
1680 | *to++ = *from++; | |
1681 | } | |
1682 | } | |
1683 | ||
1684 | seq = tem; | |
1e134a5f | 1685 | } |
1e134a5f | 1686 | } |
e517f19d GM |
1687 | else |
1688 | { | |
1689 | Lisp_Object tail, prev; | |
1690 | ||
9beb8baa | 1691 | for (tail = seq, prev = Qnil; CONSP (tail); tail = XCDR (tail)) |
e517f19d | 1692 | { |
89662fc3 | 1693 | CHECK_LIST_CONS (tail, seq); |
59f953a2 | 1694 | |
e517f19d GM |
1695 | if (!NILP (Fequal (elt, XCAR (tail)))) |
1696 | { | |
1697 | if (NILP (prev)) | |
1698 | seq = XCDR (tail); | |
1699 | else | |
1700 | Fsetcdr (prev, XCDR (tail)); | |
1701 | } | |
1702 | else | |
1703 | prev = tail; | |
1704 | QUIT; | |
1705 | } | |
1706 | } | |
59f953a2 | 1707 | |
e517f19d | 1708 | return seq; |
1e134a5f RM |
1709 | } |
1710 | ||
7b863bd5 | 1711 | DEFUN ("nreverse", Fnreverse, Snreverse, 1, 1, 0, |
e9d8ddc9 | 1712 | doc: /* Reverse LIST by modifying cdr pointers. |
6b61353c | 1713 | Return the reversed list. */) |
5842a27b | 1714 | (Lisp_Object list) |
7b863bd5 JB |
1715 | { |
1716 | register Lisp_Object prev, tail, next; | |
1717 | ||
265a9e55 | 1718 | if (NILP (list)) return list; |
7b863bd5 JB |
1719 | prev = Qnil; |
1720 | tail = list; | |
265a9e55 | 1721 | while (!NILP (tail)) |
7b863bd5 JB |
1722 | { |
1723 | QUIT; | |
89662fc3 | 1724 | CHECK_LIST_CONS (tail, list); |
71a8e74b | 1725 | next = XCDR (tail); |
7b863bd5 JB |
1726 | Fsetcdr (tail, prev); |
1727 | prev = tail; | |
1728 | tail = next; | |
1729 | } | |
1730 | return prev; | |
1731 | } | |
1732 | ||
1733 | DEFUN ("reverse", Freverse, Sreverse, 1, 1, 0, | |
6b61353c | 1734 | doc: /* Reverse LIST, copying. Return the reversed list. |
e9d8ddc9 | 1735 | See also the function `nreverse', which is used more often. */) |
5842a27b | 1736 | (Lisp_Object list) |
7b863bd5 | 1737 | { |
9d14ae76 | 1738 | Lisp_Object new; |
7b863bd5 | 1739 | |
70949dac | 1740 | for (new = Qnil; CONSP (list); list = XCDR (list)) |
5c3ea973 DL |
1741 | { |
1742 | QUIT; | |
1743 | new = Fcons (XCAR (list), new); | |
1744 | } | |
89662fc3 | 1745 | CHECK_LIST_END (list, list); |
9d14ae76 | 1746 | return new; |
7b863bd5 JB |
1747 | } |
1748 | \f | |
971de7fb | 1749 | Lisp_Object merge (Lisp_Object org_l1, Lisp_Object org_l2, Lisp_Object pred); |
7b863bd5 JB |
1750 | |
1751 | DEFUN ("sort", Fsort, Ssort, 2, 2, 0, | |
e9d8ddc9 | 1752 | doc: /* Sort LIST, stably, comparing elements using PREDICATE. |
47cebab1 | 1753 | Returns the sorted list. LIST is modified by side effects. |
5c796e80 | 1754 | PREDICATE is called with two elements of LIST, and should return non-nil |
71f6424d | 1755 | if the first element should sort before the second. */) |
5842a27b | 1756 | (Lisp_Object list, Lisp_Object predicate) |
7b863bd5 JB |
1757 | { |
1758 | Lisp_Object front, back; | |
1759 | register Lisp_Object len, tem; | |
1760 | struct gcpro gcpro1, gcpro2; | |
1761 | register int length; | |
1762 | ||
1763 | front = list; | |
1764 | len = Flength (list); | |
1765 | length = XINT (len); | |
1766 | if (length < 2) | |
1767 | return list; | |
1768 | ||
1769 | XSETINT (len, (length / 2) - 1); | |
1770 | tem = Fnthcdr (len, list); | |
1771 | back = Fcdr (tem); | |
1772 | Fsetcdr (tem, Qnil); | |
1773 | ||
1774 | GCPRO2 (front, back); | |
88fe8140 EN |
1775 | front = Fsort (front, predicate); |
1776 | back = Fsort (back, predicate); | |
7b863bd5 | 1777 | UNGCPRO; |
88fe8140 | 1778 | return merge (front, back, predicate); |
7b863bd5 JB |
1779 | } |
1780 | ||
1781 | Lisp_Object | |
971de7fb | 1782 | merge (Lisp_Object org_l1, Lisp_Object org_l2, Lisp_Object pred) |
7b863bd5 JB |
1783 | { |
1784 | Lisp_Object value; | |
1785 | register Lisp_Object tail; | |
1786 | Lisp_Object tem; | |
1787 | register Lisp_Object l1, l2; | |
1788 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
1789 | ||
1790 | l1 = org_l1; | |
1791 | l2 = org_l2; | |
1792 | tail = Qnil; | |
1793 | value = Qnil; | |
1794 | ||
1795 | /* It is sufficient to protect org_l1 and org_l2. | |
1796 | When l1 and l2 are updated, we copy the new values | |
1797 | back into the org_ vars. */ | |
1798 | GCPRO4 (org_l1, org_l2, pred, value); | |
1799 | ||
1800 | while (1) | |
1801 | { | |
265a9e55 | 1802 | if (NILP (l1)) |
7b863bd5 JB |
1803 | { |
1804 | UNGCPRO; | |
265a9e55 | 1805 | if (NILP (tail)) |
7b863bd5 JB |
1806 | return l2; |
1807 | Fsetcdr (tail, l2); | |
1808 | return value; | |
1809 | } | |
265a9e55 | 1810 | if (NILP (l2)) |
7b863bd5 JB |
1811 | { |
1812 | UNGCPRO; | |
265a9e55 | 1813 | if (NILP (tail)) |
7b863bd5 JB |
1814 | return l1; |
1815 | Fsetcdr (tail, l1); | |
1816 | return value; | |
1817 | } | |
1818 | tem = call2 (pred, Fcar (l2), Fcar (l1)); | |
265a9e55 | 1819 | if (NILP (tem)) |
7b863bd5 JB |
1820 | { |
1821 | tem = l1; | |
1822 | l1 = Fcdr (l1); | |
1823 | org_l1 = l1; | |
1824 | } | |
1825 | else | |
1826 | { | |
1827 | tem = l2; | |
1828 | l2 = Fcdr (l2); | |
1829 | org_l2 = l2; | |
1830 | } | |
265a9e55 | 1831 | if (NILP (tail)) |
7b863bd5 JB |
1832 | value = tem; |
1833 | else | |
1834 | Fsetcdr (tail, tem); | |
1835 | tail = tem; | |
1836 | } | |
1837 | } | |
be9d483d | 1838 | |
2d6fabfc | 1839 | \f |
12ae7fc6 | 1840 | /* This does not check for quits. That is safe since it must terminate. */ |
7b863bd5 | 1841 | |
12ae7fc6 | 1842 | DEFUN ("plist-get", Fplist_get, Splist_get, 2, 2, 0, |
27f604dd KS |
1843 | doc: /* Extract a value from a property list. |
1844 | PLIST is a property list, which is a list of the form | |
1845 | \(PROP1 VALUE1 PROP2 VALUE2...). This function returns the value | |
12ae7fc6 KS |
1846 | corresponding to the given PROP, or nil if PROP is not one of the |
1847 | properties on the list. This function never signals an error. */) | |
5842a27b | 1848 | (Lisp_Object plist, Lisp_Object prop) |
27f604dd KS |
1849 | { |
1850 | Lisp_Object tail, halftail; | |
1851 | ||
1852 | /* halftail is used to detect circular lists. */ | |
1853 | tail = halftail = plist; | |
1854 | while (CONSP (tail) && CONSP (XCDR (tail))) | |
1855 | { | |
1856 | if (EQ (prop, XCAR (tail))) | |
1857 | return XCAR (XCDR (tail)); | |
1858 | ||
1859 | tail = XCDR (XCDR (tail)); | |
1860 | halftail = XCDR (halftail); | |
1861 | if (EQ (tail, halftail)) | |
1862 | break; | |
af98fc7f SM |
1863 | |
1864 | #if 0 /* Unsafe version. */ | |
1865 | /* This function can be called asynchronously | |
1866 | (setup_coding_system). Don't QUIT in that case. */ | |
1867 | if (!interrupt_input_blocked) | |
1868 | QUIT; | |
1869 | #endif | |
27f604dd KS |
1870 | } |
1871 | ||
1872 | return Qnil; | |
1873 | } | |
1874 | ||
be9d483d | 1875 | DEFUN ("get", Fget, Sget, 2, 2, 0, |
e9d8ddc9 MB |
1876 | doc: /* Return the value of SYMBOL's PROPNAME property. |
1877 | This is the last value stored with `(put SYMBOL PROPNAME VALUE)'. */) | |
5842a27b | 1878 | (Lisp_Object symbol, Lisp_Object propname) |
be9d483d | 1879 | { |
b7826503 | 1880 | CHECK_SYMBOL (symbol); |
c07289e0 | 1881 | return Fplist_get (XSYMBOL (symbol)->plist, propname); |
be9d483d BG |
1882 | } |
1883 | ||
1884 | DEFUN ("plist-put", Fplist_put, Splist_put, 3, 3, 0, | |
e9d8ddc9 | 1885 | doc: /* Change value in PLIST of PROP to VAL. |
47cebab1 GM |
1886 | PLIST is a property list, which is a list of the form |
1887 | \(PROP1 VALUE1 PROP2 VALUE2 ...). PROP is a symbol and VAL is any object. | |
1888 | If PROP is already a property on the list, its value is set to VAL, | |
1889 | otherwise the new PROP VAL pair is added. The new plist is returned; | |
1890 | use `(setq x (plist-put x prop val))' to be sure to use the new value. | |
e9d8ddc9 | 1891 | The PLIST is modified by side effects. */) |
5842a27b | 1892 | (Lisp_Object plist, register Lisp_Object prop, Lisp_Object val) |
7b863bd5 JB |
1893 | { |
1894 | register Lisp_Object tail, prev; | |
1895 | Lisp_Object newcell; | |
1896 | prev = Qnil; | |
70949dac KR |
1897 | for (tail = plist; CONSP (tail) && CONSP (XCDR (tail)); |
1898 | tail = XCDR (XCDR (tail))) | |
7b863bd5 | 1899 | { |
70949dac | 1900 | if (EQ (prop, XCAR (tail))) |
be9d483d | 1901 | { |
70949dac | 1902 | Fsetcar (XCDR (tail), val); |
be9d483d BG |
1903 | return plist; |
1904 | } | |
91f78c99 | 1905 | |
7b863bd5 | 1906 | prev = tail; |
2d6fabfc | 1907 | QUIT; |
7b863bd5 | 1908 | } |
088c8c37 | 1909 | newcell = Fcons (prop, Fcons (val, NILP (prev) ? plist : XCDR (XCDR (prev)))); |
265a9e55 | 1910 | if (NILP (prev)) |
be9d483d | 1911 | return newcell; |
7b863bd5 | 1912 | else |
70949dac | 1913 | Fsetcdr (XCDR (prev), newcell); |
be9d483d BG |
1914 | return plist; |
1915 | } | |
1916 | ||
1917 | DEFUN ("put", Fput, Sput, 3, 3, 0, | |
e9d8ddc9 MB |
1918 | doc: /* Store SYMBOL's PROPNAME property with value VALUE. |
1919 | It can be retrieved with `(get SYMBOL PROPNAME)'. */) | |
5842a27b | 1920 | (Lisp_Object symbol, Lisp_Object propname, Lisp_Object value) |
be9d483d | 1921 | { |
b7826503 | 1922 | CHECK_SYMBOL (symbol); |
c07289e0 RS |
1923 | XSYMBOL (symbol)->plist |
1924 | = Fplist_put (XSYMBOL (symbol)->plist, propname, value); | |
1925 | return value; | |
7b863bd5 | 1926 | } |
aebf4d42 RS |
1927 | \f |
1928 | DEFUN ("lax-plist-get", Flax_plist_get, Slax_plist_get, 2, 2, 0, | |
1929 | doc: /* Extract a value from a property list, comparing with `equal'. | |
1930 | PLIST is a property list, which is a list of the form | |
1931 | \(PROP1 VALUE1 PROP2 VALUE2...). This function returns the value | |
1932 | corresponding to the given PROP, or nil if PROP is not | |
1933 | one of the properties on the list. */) | |
5842a27b | 1934 | (Lisp_Object plist, Lisp_Object prop) |
aebf4d42 RS |
1935 | { |
1936 | Lisp_Object tail; | |
91f78c99 | 1937 | |
aebf4d42 RS |
1938 | for (tail = plist; |
1939 | CONSP (tail) && CONSP (XCDR (tail)); | |
1940 | tail = XCDR (XCDR (tail))) | |
1941 | { | |
1942 | if (! NILP (Fequal (prop, XCAR (tail)))) | |
1943 | return XCAR (XCDR (tail)); | |
1944 | ||
1945 | QUIT; | |
1946 | } | |
1947 | ||
89662fc3 | 1948 | CHECK_LIST_END (tail, prop); |
91f78c99 | 1949 | |
aebf4d42 RS |
1950 | return Qnil; |
1951 | } | |
7b863bd5 | 1952 | |
aebf4d42 RS |
1953 | DEFUN ("lax-plist-put", Flax_plist_put, Slax_plist_put, 3, 3, 0, |
1954 | doc: /* Change value in PLIST of PROP to VAL, comparing with `equal'. | |
1955 | PLIST is a property list, which is a list of the form | |
9e76ae05 | 1956 | \(PROP1 VALUE1 PROP2 VALUE2 ...). PROP and VAL are any objects. |
aebf4d42 RS |
1957 | If PROP is already a property on the list, its value is set to VAL, |
1958 | otherwise the new PROP VAL pair is added. The new plist is returned; | |
1959 | use `(setq x (lax-plist-put x prop val))' to be sure to use the new value. | |
1960 | The PLIST is modified by side effects. */) | |
5842a27b | 1961 | (Lisp_Object plist, register Lisp_Object prop, Lisp_Object val) |
aebf4d42 RS |
1962 | { |
1963 | register Lisp_Object tail, prev; | |
1964 | Lisp_Object newcell; | |
1965 | prev = Qnil; | |
1966 | for (tail = plist; CONSP (tail) && CONSP (XCDR (tail)); | |
1967 | tail = XCDR (XCDR (tail))) | |
1968 | { | |
1969 | if (! NILP (Fequal (prop, XCAR (tail)))) | |
1970 | { | |
1971 | Fsetcar (XCDR (tail), val); | |
1972 | return plist; | |
1973 | } | |
91f78c99 | 1974 | |
aebf4d42 RS |
1975 | prev = tail; |
1976 | QUIT; | |
1977 | } | |
1978 | newcell = Fcons (prop, Fcons (val, Qnil)); | |
1979 | if (NILP (prev)) | |
1980 | return newcell; | |
1981 | else | |
1982 | Fsetcdr (XCDR (prev), newcell); | |
1983 | return plist; | |
1984 | } | |
1985 | \f | |
95f8c3b9 JPW |
1986 | DEFUN ("eql", Feql, Seql, 2, 2, 0, |
1987 | doc: /* Return t if the two args are the same Lisp object. | |
1988 | Floating-point numbers of equal value are `eql', but they may not be `eq'. */) | |
5842a27b | 1989 | (Lisp_Object obj1, Lisp_Object obj2) |
95f8c3b9 JPW |
1990 | { |
1991 | if (FLOATP (obj1)) | |
1992 | return internal_equal (obj1, obj2, 0, 0) ? Qt : Qnil; | |
1993 | else | |
1994 | return EQ (obj1, obj2) ? Qt : Qnil; | |
1995 | } | |
1996 | ||
7b863bd5 | 1997 | DEFUN ("equal", Fequal, Sequal, 2, 2, 0, |
e9d8ddc9 | 1998 | doc: /* Return t if two Lisp objects have similar structure and contents. |
47cebab1 GM |
1999 | They must have the same data type. |
2000 | Conses are compared by comparing the cars and the cdrs. | |
2001 | Vectors and strings are compared element by element. | |
2002 | Numbers are compared by value, but integers cannot equal floats. | |
2003 | (Use `=' if you want integers and floats to be able to be equal.) | |
e9d8ddc9 | 2004 | Symbols must match exactly. */) |
5842a27b | 2005 | (register Lisp_Object o1, Lisp_Object o2) |
7b863bd5 | 2006 | { |
6b61353c KH |
2007 | return internal_equal (o1, o2, 0, 0) ? Qt : Qnil; |
2008 | } | |
2009 | ||
2010 | DEFUN ("equal-including-properties", Fequal_including_properties, Sequal_including_properties, 2, 2, 0, | |
2011 | doc: /* Return t if two Lisp objects have similar structure and contents. | |
2012 | This is like `equal' except that it compares the text properties | |
2013 | of strings. (`equal' ignores text properties.) */) | |
5842a27b | 2014 | (register Lisp_Object o1, Lisp_Object o2) |
6b61353c KH |
2015 | { |
2016 | return internal_equal (o1, o2, 0, 1) ? Qt : Qnil; | |
e0f5cf5a RS |
2017 | } |
2018 | ||
6b61353c KH |
2019 | /* DEPTH is current depth of recursion. Signal an error if it |
2020 | gets too deep. | |
2021 | PROPS, if non-nil, means compare string text properties too. */ | |
2022 | ||
6cb9cafb | 2023 | static int |
971de7fb | 2024 | internal_equal (register Lisp_Object o1, register Lisp_Object o2, int depth, int props) |
e0f5cf5a RS |
2025 | { |
2026 | if (depth > 200) | |
2027 | error ("Stack overflow in equal"); | |
4ff1aed9 | 2028 | |
6cb9cafb | 2029 | tail_recurse: |
7b863bd5 | 2030 | QUIT; |
4ff1aed9 RS |
2031 | if (EQ (o1, o2)) |
2032 | return 1; | |
2033 | if (XTYPE (o1) != XTYPE (o2)) | |
2034 | return 0; | |
2035 | ||
2036 | switch (XTYPE (o1)) | |
2037 | { | |
4ff1aed9 | 2038 | case Lisp_Float: |
6b61353c KH |
2039 | { |
2040 | double d1, d2; | |
2041 | ||
2042 | d1 = extract_float (o1); | |
2043 | d2 = extract_float (o2); | |
2044 | /* If d is a NaN, then d != d. Two NaNs should be `equal' even | |
2045 | though they are not =. */ | |
2046 | return d1 == d2 || (d1 != d1 && d2 != d2); | |
2047 | } | |
4ff1aed9 RS |
2048 | |
2049 | case Lisp_Cons: | |
6b61353c | 2050 | if (!internal_equal (XCAR (o1), XCAR (o2), depth + 1, props)) |
4cab5074 | 2051 | return 0; |
70949dac KR |
2052 | o1 = XCDR (o1); |
2053 | o2 = XCDR (o2); | |
4cab5074 | 2054 | goto tail_recurse; |
4ff1aed9 RS |
2055 | |
2056 | case Lisp_Misc: | |
81d1fba6 | 2057 | if (XMISCTYPE (o1) != XMISCTYPE (o2)) |
6cb9cafb | 2058 | return 0; |
4ff1aed9 | 2059 | if (OVERLAYP (o1)) |
7b863bd5 | 2060 | { |
e23f814f | 2061 | if (!internal_equal (OVERLAY_START (o1), OVERLAY_START (o2), |
6b61353c | 2062 | depth + 1, props) |
e23f814f | 2063 | || !internal_equal (OVERLAY_END (o1), OVERLAY_END (o2), |
43f15d4a | 2064 | depth + 1, props)) |
6cb9cafb | 2065 | return 0; |
4ff1aed9 RS |
2066 | o1 = XOVERLAY (o1)->plist; |
2067 | o2 = XOVERLAY (o2)->plist; | |
2068 | goto tail_recurse; | |
7b863bd5 | 2069 | } |
4ff1aed9 RS |
2070 | if (MARKERP (o1)) |
2071 | { | |
2072 | return (XMARKER (o1)->buffer == XMARKER (o2)->buffer | |
2073 | && (XMARKER (o1)->buffer == 0 | |
6ced1284 | 2074 | || XMARKER (o1)->bytepos == XMARKER (o2)->bytepos)); |
4ff1aed9 RS |
2075 | } |
2076 | break; | |
2077 | ||
2078 | case Lisp_Vectorlike: | |
4cab5074 | 2079 | { |
6b61353c | 2080 | register int i; |
7edbb0da | 2081 | EMACS_INT size = ASIZE (o1); |
4cab5074 KH |
2082 | /* Pseudovectors have the type encoded in the size field, so this test |
2083 | actually checks that the objects have the same type as well as the | |
2084 | same size. */ | |
7edbb0da | 2085 | if (ASIZE (o2) != size) |
4cab5074 | 2086 | return 0; |
e03f7933 RS |
2087 | /* Boolvectors are compared much like strings. */ |
2088 | if (BOOL_VECTOR_P (o1)) | |
2089 | { | |
e03f7933 | 2090 | int size_in_chars |
db85986c AS |
2091 | = ((XBOOL_VECTOR (o1)->size + BOOL_VECTOR_BITS_PER_CHAR - 1) |
2092 | / BOOL_VECTOR_BITS_PER_CHAR); | |
e03f7933 RS |
2093 | |
2094 | if (XBOOL_VECTOR (o1)->size != XBOOL_VECTOR (o2)->size) | |
2095 | return 0; | |
72af86bd AS |
2096 | if (memcmp (XBOOL_VECTOR (o1)->data, XBOOL_VECTOR (o2)->data, |
2097 | size_in_chars)) | |
e03f7933 RS |
2098 | return 0; |
2099 | return 1; | |
2100 | } | |
ed73fcc1 | 2101 | if (WINDOW_CONFIGURATIONP (o1)) |
48646924 | 2102 | return compare_window_configurations (o1, o2, 0); |
e03f7933 | 2103 | |
f6204a24 KH |
2104 | /* Aside from them, only true vectors, char-tables, compiled |
2105 | functions, and fonts (font-spec, font-entity, font-ojbect) | |
2106 | are sensible to compare, so eliminate the others now. */ | |
4cab5074 KH |
2107 | if (size & PSEUDOVECTOR_FLAG) |
2108 | { | |
8f924df7 | 2109 | if (!(size & (PVEC_COMPILED |
f6204a24 | 2110 | | PVEC_CHAR_TABLE | PVEC_SUB_CHAR_TABLE | PVEC_FONT))) |
4cab5074 KH |
2111 | return 0; |
2112 | size &= PSEUDOVECTOR_SIZE_MASK; | |
2113 | } | |
2114 | for (i = 0; i < size; i++) | |
2115 | { | |
2116 | Lisp_Object v1, v2; | |
7edbb0da SM |
2117 | v1 = AREF (o1, i); |
2118 | v2 = AREF (o2, i); | |
6b61353c | 2119 | if (!internal_equal (v1, v2, depth + 1, props)) |
4cab5074 KH |
2120 | return 0; |
2121 | } | |
2122 | return 1; | |
2123 | } | |
4ff1aed9 RS |
2124 | break; |
2125 | ||
2126 | case Lisp_String: | |
d5db4077 | 2127 | if (SCHARS (o1) != SCHARS (o2)) |
4cab5074 | 2128 | return 0; |
d5db4077 | 2129 | if (SBYTES (o1) != SBYTES (o2)) |
ea35ce3d | 2130 | return 0; |
72af86bd | 2131 | if (memcmp (SDATA (o1), SDATA (o2), SBYTES (o1))) |
4cab5074 | 2132 | return 0; |
6b61353c KH |
2133 | if (props && !compare_string_intervals (o1, o2)) |
2134 | return 0; | |
4cab5074 | 2135 | return 1; |
093386ca | 2136 | |
2de9f71c | 2137 | default: |
093386ca | 2138 | break; |
7b863bd5 | 2139 | } |
91f78c99 | 2140 | |
6cb9cafb | 2141 | return 0; |
7b863bd5 JB |
2142 | } |
2143 | \f | |
2e34157c | 2144 | |
7b863bd5 | 2145 | DEFUN ("fillarray", Ffillarray, Sfillarray, 2, 2, 0, |
e9d8ddc9 MB |
2146 | doc: /* Store each element of ARRAY with ITEM. |
2147 | ARRAY is a vector, string, char-table, or bool-vector. */) | |
5842a27b | 2148 | (Lisp_Object array, Lisp_Object item) |
7b863bd5 JB |
2149 | { |
2150 | register int size, index, charval; | |
7650760e | 2151 | if (VECTORP (array)) |
7b863bd5 JB |
2152 | { |
2153 | register Lisp_Object *p = XVECTOR (array)->contents; | |
7edbb0da | 2154 | size = ASIZE (array); |
7b863bd5 JB |
2155 | for (index = 0; index < size; index++) |
2156 | p[index] = item; | |
2157 | } | |
e03f7933 RS |
2158 | else if (CHAR_TABLE_P (array)) |
2159 | { | |
38583a69 KH |
2160 | int i; |
2161 | ||
2162 | for (i = 0; i < (1 << CHARTAB_SIZE_BITS_0); i++) | |
2163 | XCHAR_TABLE (array)->contents[i] = item; | |
2164 | XCHAR_TABLE (array)->defalt = item; | |
e03f7933 | 2165 | } |
7650760e | 2166 | else if (STRINGP (array)) |
7b863bd5 | 2167 | { |
d5db4077 | 2168 | register unsigned char *p = SDATA (array); |
b7826503 | 2169 | CHECK_NUMBER (item); |
7b863bd5 | 2170 | charval = XINT (item); |
d5db4077 | 2171 | size = SCHARS (array); |
57247650 KH |
2172 | if (STRING_MULTIBYTE (array)) |
2173 | { | |
64a5094a KH |
2174 | unsigned char str[MAX_MULTIBYTE_LENGTH]; |
2175 | int len = CHAR_STRING (charval, str); | |
d5db4077 | 2176 | int size_byte = SBYTES (array); |
57247650 | 2177 | unsigned char *p1 = p, *endp = p + size_byte; |
95b8aba7 | 2178 | int i; |
57247650 | 2179 | |
95b8aba7 KH |
2180 | if (size != size_byte) |
2181 | while (p1 < endp) | |
2182 | { | |
aa3830c4 | 2183 | int this_len = BYTES_BY_CHAR_HEAD (*p1); |
95b8aba7 KH |
2184 | if (len != this_len) |
2185 | error ("Attempt to change byte length of a string"); | |
2186 | p1 += this_len; | |
2187 | } | |
57247650 KH |
2188 | for (i = 0; i < size_byte; i++) |
2189 | *p++ = str[i % len]; | |
2190 | } | |
2191 | else | |
2192 | for (index = 0; index < size; index++) | |
2193 | p[index] = charval; | |
7b863bd5 | 2194 | } |
e03f7933 RS |
2195 | else if (BOOL_VECTOR_P (array)) |
2196 | { | |
2197 | register unsigned char *p = XBOOL_VECTOR (array)->data; | |
e03f7933 | 2198 | int size_in_chars |
db85986c AS |
2199 | = ((XBOOL_VECTOR (array)->size + BOOL_VECTOR_BITS_PER_CHAR - 1) |
2200 | / BOOL_VECTOR_BITS_PER_CHAR); | |
e03f7933 RS |
2201 | |
2202 | charval = (! NILP (item) ? -1 : 0); | |
6b61353c | 2203 | for (index = 0; index < size_in_chars - 1; index++) |
e03f7933 | 2204 | p[index] = charval; |
6b61353c KH |
2205 | if (index < size_in_chars) |
2206 | { | |
2207 | /* Mask out bits beyond the vector size. */ | |
db85986c AS |
2208 | if (XBOOL_VECTOR (array)->size % BOOL_VECTOR_BITS_PER_CHAR) |
2209 | charval &= (1 << (XBOOL_VECTOR (array)->size % BOOL_VECTOR_BITS_PER_CHAR)) - 1; | |
6b61353c KH |
2210 | p[index] = charval; |
2211 | } | |
e03f7933 | 2212 | } |
7b863bd5 | 2213 | else |
89662fc3 | 2214 | wrong_type_argument (Qarrayp, array); |
7b863bd5 JB |
2215 | return array; |
2216 | } | |
85cad579 RS |
2217 | |
2218 | DEFUN ("clear-string", Fclear_string, Sclear_string, | |
2219 | 1, 1, 0, | |
2220 | doc: /* Clear the contents of STRING. | |
2221 | This makes STRING unibyte and may change its length. */) | |
5842a27b | 2222 | (Lisp_Object string) |
85cad579 | 2223 | { |
cfd23693 | 2224 | int len; |
a085bf9d | 2225 | CHECK_STRING (string); |
cfd23693 | 2226 | len = SBYTES (string); |
72af86bd | 2227 | memset (SDATA (string), 0, len); |
85cad579 RS |
2228 | STRING_SET_CHARS (string, len); |
2229 | STRING_SET_UNIBYTE (string); | |
2230 | return Qnil; | |
2231 | } | |
ea35ce3d | 2232 | \f |
7b863bd5 JB |
2233 | /* ARGSUSED */ |
2234 | Lisp_Object | |
971de7fb | 2235 | nconc2 (Lisp_Object s1, Lisp_Object s2) |
7b863bd5 | 2236 | { |
7b863bd5 JB |
2237 | Lisp_Object args[2]; |
2238 | args[0] = s1; | |
2239 | args[1] = s2; | |
2240 | return Fnconc (2, args); | |
7b863bd5 JB |
2241 | } |
2242 | ||
2243 | DEFUN ("nconc", Fnconc, Snconc, 0, MANY, 0, | |
e9d8ddc9 | 2244 | doc: /* Concatenate any number of lists by altering them. |
4bf8e2a3 MB |
2245 | Only the last argument is not altered, and need not be a list. |
2246 | usage: (nconc &rest LISTS) */) | |
5842a27b | 2247 | (int nargs, Lisp_Object *args) |
7b863bd5 JB |
2248 | { |
2249 | register int argnum; | |
2250 | register Lisp_Object tail, tem, val; | |
2251 | ||
093386ca | 2252 | val = tail = Qnil; |
7b863bd5 JB |
2253 | |
2254 | for (argnum = 0; argnum < nargs; argnum++) | |
2255 | { | |
2256 | tem = args[argnum]; | |
265a9e55 | 2257 | if (NILP (tem)) continue; |
7b863bd5 | 2258 | |
265a9e55 | 2259 | if (NILP (val)) |
7b863bd5 JB |
2260 | val = tem; |
2261 | ||
2262 | if (argnum + 1 == nargs) break; | |
2263 | ||
89662fc3 | 2264 | CHECK_LIST_CONS (tem, tem); |
7b863bd5 JB |
2265 | |
2266 | while (CONSP (tem)) | |
2267 | { | |
2268 | tail = tem; | |
cf42cb72 | 2269 | tem = XCDR (tail); |
7b863bd5 JB |
2270 | QUIT; |
2271 | } | |
2272 | ||
2273 | tem = args[argnum + 1]; | |
2274 | Fsetcdr (tail, tem); | |
265a9e55 | 2275 | if (NILP (tem)) |
7b863bd5 JB |
2276 | args[argnum + 1] = tail; |
2277 | } | |
2278 | ||
2279 | return val; | |
2280 | } | |
2281 | \f | |
2282 | /* This is the guts of all mapping functions. | |
ea35ce3d RS |
2283 | Apply FN to each element of SEQ, one by one, |
2284 | storing the results into elements of VALS, a C vector of Lisp_Objects. | |
2285 | LENI is the length of VALS, which should also be the length of SEQ. */ | |
7b863bd5 JB |
2286 | |
2287 | static void | |
971de7fb | 2288 | mapcar1 (int leni, Lisp_Object *vals, Lisp_Object fn, Lisp_Object seq) |
7b863bd5 JB |
2289 | { |
2290 | register Lisp_Object tail; | |
2291 | Lisp_Object dummy; | |
2292 | register int i; | |
2293 | struct gcpro gcpro1, gcpro2, gcpro3; | |
2294 | ||
f5c75033 DL |
2295 | if (vals) |
2296 | { | |
2297 | /* Don't let vals contain any garbage when GC happens. */ | |
2298 | for (i = 0; i < leni; i++) | |
2299 | vals[i] = Qnil; | |
7b863bd5 | 2300 | |
f5c75033 DL |
2301 | GCPRO3 (dummy, fn, seq); |
2302 | gcpro1.var = vals; | |
2303 | gcpro1.nvars = leni; | |
2304 | } | |
2305 | else | |
2306 | GCPRO2 (fn, seq); | |
7b863bd5 | 2307 | /* We need not explicitly protect `tail' because it is used only on lists, and |
7edbb0da SM |
2308 | 1) lists are not relocated and 2) the list is marked via `seq' so will not |
2309 | be freed */ | |
7b863bd5 | 2310 | |
7650760e | 2311 | if (VECTORP (seq)) |
7b863bd5 JB |
2312 | { |
2313 | for (i = 0; i < leni; i++) | |
2314 | { | |
7edbb0da | 2315 | dummy = call1 (fn, AREF (seq, i)); |
f5c75033 DL |
2316 | if (vals) |
2317 | vals[i] = dummy; | |
7b863bd5 JB |
2318 | } |
2319 | } | |
33aa0881 KH |
2320 | else if (BOOL_VECTOR_P (seq)) |
2321 | { | |
2322 | for (i = 0; i < leni; i++) | |
2323 | { | |
2324 | int byte; | |
db85986c | 2325 | byte = XBOOL_VECTOR (seq)->data[i / BOOL_VECTOR_BITS_PER_CHAR]; |
7edbb0da | 2326 | dummy = (byte & (1 << (i % BOOL_VECTOR_BITS_PER_CHAR))) ? Qt : Qnil; |
f5c75033 DL |
2327 | dummy = call1 (fn, dummy); |
2328 | if (vals) | |
2329 | vals[i] = dummy; | |
33aa0881 KH |
2330 | } |
2331 | } | |
ea35ce3d RS |
2332 | else if (STRINGP (seq)) |
2333 | { | |
ea35ce3d RS |
2334 | int i_byte; |
2335 | ||
2336 | for (i = 0, i_byte = 0; i < leni;) | |
2337 | { | |
2338 | int c; | |
0ab6a3d8 KH |
2339 | int i_before = i; |
2340 | ||
2341 | FETCH_STRING_CHAR_ADVANCE (c, seq, i, i_byte); | |
ea35ce3d | 2342 | XSETFASTINT (dummy, c); |
f5c75033 DL |
2343 | dummy = call1 (fn, dummy); |
2344 | if (vals) | |
2345 | vals[i_before] = dummy; | |
ea35ce3d RS |
2346 | } |
2347 | } | |
7b863bd5 JB |
2348 | else /* Must be a list, since Flength did not get an error */ |
2349 | { | |
2350 | tail = seq; | |
85946364 | 2351 | for (i = 0; i < leni && CONSP (tail); i++) |
7b863bd5 | 2352 | { |
85946364 | 2353 | dummy = call1 (fn, XCAR (tail)); |
f5c75033 DL |
2354 | if (vals) |
2355 | vals[i] = dummy; | |
70949dac | 2356 | tail = XCDR (tail); |
7b863bd5 JB |
2357 | } |
2358 | } | |
2359 | ||
2360 | UNGCPRO; | |
2361 | } | |
2362 | ||
2363 | DEFUN ("mapconcat", Fmapconcat, Smapconcat, 3, 3, 0, | |
e9d8ddc9 | 2364 | doc: /* Apply FUNCTION to each element of SEQUENCE, and concat the results as strings. |
dd8d1e71 | 2365 | In between each pair of results, stick in SEPARATOR. Thus, " " as |
47cebab1 | 2366 | SEPARATOR results in spaces between the values returned by FUNCTION. |
e9d8ddc9 | 2367 | SEQUENCE may be a list, a vector, a bool-vector, or a string. */) |
5842a27b | 2368 | (Lisp_Object function, Lisp_Object sequence, Lisp_Object separator) |
7b863bd5 JB |
2369 | { |
2370 | Lisp_Object len; | |
2371 | register int leni; | |
2372 | int nargs; | |
2373 | register Lisp_Object *args; | |
2374 | register int i; | |
2375 | struct gcpro gcpro1; | |
799c08ac KS |
2376 | Lisp_Object ret; |
2377 | USE_SAFE_ALLOCA; | |
7b863bd5 | 2378 | |
88fe8140 | 2379 | len = Flength (sequence); |
4187aa82 KH |
2380 | if (CHAR_TABLE_P (sequence)) |
2381 | wrong_type_argument (Qlistp, sequence); | |
7b863bd5 JB |
2382 | leni = XINT (len); |
2383 | nargs = leni + leni - 1; | |
b116683c | 2384 | if (nargs < 0) return empty_unibyte_string; |
7b863bd5 | 2385 | |
7b4cd44a | 2386 | SAFE_ALLOCA_LISP (args, nargs); |
7b863bd5 | 2387 | |
88fe8140 EN |
2388 | GCPRO1 (separator); |
2389 | mapcar1 (leni, args, function, sequence); | |
7b863bd5 JB |
2390 | UNGCPRO; |
2391 | ||
85946364 | 2392 | for (i = leni - 1; i > 0; i--) |
7b863bd5 | 2393 | args[i + i] = args[i]; |
b4f334f7 | 2394 | |
7b863bd5 | 2395 | for (i = 1; i < nargs; i += 2) |
88fe8140 | 2396 | args[i] = separator; |
7b863bd5 | 2397 | |
799c08ac | 2398 | ret = Fconcat (nargs, args); |
233f3db6 | 2399 | SAFE_FREE (); |
799c08ac KS |
2400 | |
2401 | return ret; | |
7b863bd5 JB |
2402 | } |
2403 | ||
2404 | DEFUN ("mapcar", Fmapcar, Smapcar, 2, 2, 0, | |
e9d8ddc9 | 2405 | doc: /* Apply FUNCTION to each element of SEQUENCE, and make a list of the results. |
47cebab1 | 2406 | The result is a list just as long as SEQUENCE. |
e9d8ddc9 | 2407 | SEQUENCE may be a list, a vector, a bool-vector, or a string. */) |
5842a27b | 2408 | (Lisp_Object function, Lisp_Object sequence) |
7b863bd5 JB |
2409 | { |
2410 | register Lisp_Object len; | |
2411 | register int leni; | |
2412 | register Lisp_Object *args; | |
799c08ac KS |
2413 | Lisp_Object ret; |
2414 | USE_SAFE_ALLOCA; | |
7b863bd5 | 2415 | |
88fe8140 | 2416 | len = Flength (sequence); |
4187aa82 KH |
2417 | if (CHAR_TABLE_P (sequence)) |
2418 | wrong_type_argument (Qlistp, sequence); | |
7b863bd5 | 2419 | leni = XFASTINT (len); |
799c08ac | 2420 | |
7b4cd44a | 2421 | SAFE_ALLOCA_LISP (args, leni); |
7b863bd5 | 2422 | |
88fe8140 | 2423 | mapcar1 (leni, args, function, sequence); |
7b863bd5 | 2424 | |
799c08ac | 2425 | ret = Flist (leni, args); |
233f3db6 | 2426 | SAFE_FREE (); |
799c08ac KS |
2427 | |
2428 | return ret; | |
7b863bd5 | 2429 | } |
f5c75033 DL |
2430 | |
2431 | DEFUN ("mapc", Fmapc, Smapc, 2, 2, 0, | |
e9d8ddc9 | 2432 | doc: /* Apply FUNCTION to each element of SEQUENCE for side effects only. |
47cebab1 | 2433 | Unlike `mapcar', don't accumulate the results. Return SEQUENCE. |
e9d8ddc9 | 2434 | SEQUENCE may be a list, a vector, a bool-vector, or a string. */) |
5842a27b | 2435 | (Lisp_Object function, Lisp_Object sequence) |
f5c75033 DL |
2436 | { |
2437 | register int leni; | |
2438 | ||
2439 | leni = XFASTINT (Flength (sequence)); | |
4187aa82 KH |
2440 | if (CHAR_TABLE_P (sequence)) |
2441 | wrong_type_argument (Qlistp, sequence); | |
f5c75033 DL |
2442 | mapcar1 (leni, 0, function, sequence); |
2443 | ||
2444 | return sequence; | |
2445 | } | |
7b863bd5 JB |
2446 | \f |
2447 | /* Anything that calls this function must protect from GC! */ | |
2448 | ||
2449 | DEFUN ("y-or-n-p", Fy_or_n_p, Sy_or_n_p, 1, 1, 0, | |
e9d8ddc9 | 2450 | doc: /* Ask user a "y or n" question. Return t if answer is "y". |
47cebab1 GM |
2451 | Takes one argument, which is the string to display to ask the question. |
2452 | It should end in a space; `y-or-n-p' adds `(y or n) ' to it. | |
2453 | No confirmation of the answer is requested; a single character is enough. | |
2454 | Also accepts Space to mean yes, or Delete to mean no. \(Actually, it uses | |
2455 | the bindings in `query-replace-map'; see the documentation of that variable | |
2456 | for more information. In this case, the useful bindings are `act', `skip', | |
2457 | `recenter', and `quit'.\) | |
2458 | ||
2459 | Under a windowing system a dialog box will be used if `last-nonmenu-event' | |
e9d8ddc9 | 2460 | is nil and `use-dialog-box' is non-nil. */) |
5842a27b | 2461 | (Lisp_Object prompt) |
7b863bd5 | 2462 | { |
2b8503ea | 2463 | register Lisp_Object obj, key, def, map; |
f5313ed9 | 2464 | register int answer; |
7b863bd5 JB |
2465 | Lisp_Object xprompt; |
2466 | Lisp_Object args[2]; | |
7b863bd5 | 2467 | struct gcpro gcpro1, gcpro2; |
aed13378 | 2468 | int count = SPECPDL_INDEX (); |
eb4ffa4e RS |
2469 | |
2470 | specbind (Qcursor_in_echo_area, Qt); | |
7b863bd5 | 2471 | |
f5313ed9 RS |
2472 | map = Fsymbol_value (intern ("query-replace-map")); |
2473 | ||
b7826503 | 2474 | CHECK_STRING (prompt); |
7b863bd5 JB |
2475 | xprompt = prompt; |
2476 | GCPRO2 (prompt, xprompt); | |
2477 | ||
d148e14d | 2478 | #ifdef HAVE_WINDOW_SYSTEM |
df6c90d8 GM |
2479 | if (display_hourglass_p) |
2480 | cancel_hourglass (); | |
eff95916 | 2481 | #endif |
59f953a2 | 2482 | |
7b863bd5 JB |
2483 | while (1) |
2484 | { | |
eb4ffa4e | 2485 | |
0ef68e8a | 2486 | #ifdef HAVE_MENUS |
62af879c KL |
2487 | if (FRAME_WINDOW_P (SELECTED_FRAME ()) |
2488 | && (NILP (last_nonmenu_event) || CONSP (last_nonmenu_event)) | |
bdd8d692 | 2489 | && use_dialog_box |
0ef68e8a | 2490 | && have_menus_p ()) |
1db4cfb2 RS |
2491 | { |
2492 | Lisp_Object pane, menu; | |
3007ebfb | 2493 | redisplay_preserve_echo_area (3); |
1db4cfb2 RS |
2494 | pane = Fcons (Fcons (build_string ("Yes"), Qt), |
2495 | Fcons (Fcons (build_string ("No"), Qnil), | |
2496 | Qnil)); | |
ec26e1b9 | 2497 | menu = Fcons (prompt, pane); |
f0a31d70 | 2498 | obj = Fx_popup_dialog (Qt, menu, Qnil); |
1db4cfb2 RS |
2499 | answer = !NILP (obj); |
2500 | break; | |
2501 | } | |
0ef68e8a | 2502 | #endif /* HAVE_MENUS */ |
dfa89228 | 2503 | cursor_in_echo_area = 1; |
b312cc52 | 2504 | choose_minibuf_frame (); |
927be332 PJ |
2505 | |
2506 | { | |
2507 | Lisp_Object pargs[3]; | |
2508 | ||
bcb31b2a | 2509 | /* Colorize prompt according to `minibuffer-prompt' face. */ |
927be332 PJ |
2510 | pargs[0] = build_string ("%s(y or n) "); |
2511 | pargs[1] = intern ("face"); | |
2512 | pargs[2] = intern ("minibuffer-prompt"); | |
2513 | args[0] = Fpropertize (3, pargs); | |
2514 | args[1] = xprompt; | |
2515 | Fmessage (2, args); | |
2516 | } | |
7b863bd5 | 2517 | |
2d8e7e1f RS |
2518 | if (minibuffer_auto_raise) |
2519 | { | |
2520 | Lisp_Object mini_frame; | |
2521 | ||
2522 | mini_frame = WINDOW_FRAME (XWINDOW (minibuf_window)); | |
2523 | ||
2524 | Fraise_frame (mini_frame); | |
2525 | } | |
2526 | ||
b3e6f69c | 2527 | temporarily_switch_to_single_kboard (SELECTED_FRAME ()); |
d5f12155 | 2528 | obj = read_filtered_event (1, 0, 0, 0, Qnil); |
dfa89228 KH |
2529 | cursor_in_echo_area = 0; |
2530 | /* If we need to quit, quit with cursor_in_echo_area = 0. */ | |
2531 | QUIT; | |
a63f658b | 2532 | |
f5313ed9 | 2533 | key = Fmake_vector (make_number (1), obj); |
aad2a123 | 2534 | def = Flookup_key (map, key, Qt); |
7b863bd5 | 2535 | |
f5313ed9 RS |
2536 | if (EQ (def, intern ("skip"))) |
2537 | { | |
2538 | answer = 0; | |
2539 | break; | |
2540 | } | |
2541 | else if (EQ (def, intern ("act"))) | |
2542 | { | |
2543 | answer = 1; | |
2544 | break; | |
2545 | } | |
29944b73 RS |
2546 | else if (EQ (def, intern ("recenter"))) |
2547 | { | |
2548 | Frecenter (Qnil); | |
2549 | xprompt = prompt; | |
2550 | continue; | |
2551 | } | |
f5313ed9 | 2552 | else if (EQ (def, intern ("quit"))) |
7b863bd5 | 2553 | Vquit_flag = Qt; |
ec63af1b RS |
2554 | /* We want to exit this command for exit-prefix, |
2555 | and this is the only way to do it. */ | |
2556 | else if (EQ (def, intern ("exit-prefix"))) | |
2557 | Vquit_flag = Qt; | |
f5313ed9 | 2558 | |
7b863bd5 | 2559 | QUIT; |
20aa96aa JB |
2560 | |
2561 | /* If we don't clear this, then the next call to read_char will | |
2562 | return quit_char again, and we'll enter an infinite loop. */ | |
088880f1 | 2563 | Vquit_flag = Qnil; |
7b863bd5 JB |
2564 | |
2565 | Fding (Qnil); | |
2566 | Fdiscard_input (); | |
2567 | if (EQ (xprompt, prompt)) | |
2568 | { | |
2569 | args[0] = build_string ("Please answer y or n. "); | |
2570 | args[1] = prompt; | |
2571 | xprompt = Fconcat (2, args); | |
2572 | } | |
2573 | } | |
2574 | UNGCPRO; | |
6a8a9750 | 2575 | |
09c95874 RS |
2576 | if (! noninteractive) |
2577 | { | |
2578 | cursor_in_echo_area = -1; | |
ea35ce3d RS |
2579 | message_with_string (answer ? "%s(y or n) y" : "%s(y or n) n", |
2580 | xprompt, 0); | |
09c95874 | 2581 | } |
6a8a9750 | 2582 | |
eb4ffa4e | 2583 | unbind_to (count, Qnil); |
f5313ed9 | 2584 | return answer ? Qt : Qnil; |
7b863bd5 JB |
2585 | } |
2586 | \f | |
2587 | /* This is how C code calls `yes-or-no-p' and allows the user | |
2588 | to redefined it. | |
2589 | ||
2590 | Anything that calls this function must protect from GC! */ | |
2591 | ||
2592 | Lisp_Object | |
971de7fb | 2593 | do_yes_or_no_p (Lisp_Object prompt) |
7b863bd5 JB |
2594 | { |
2595 | return call1 (intern ("yes-or-no-p"), prompt); | |
2596 | } | |
2597 | ||
2598 | /* Anything that calls this function must protect from GC! */ | |
2599 | ||
2600 | DEFUN ("yes-or-no-p", Fyes_or_no_p, Syes_or_no_p, 1, 1, 0, | |
e9d8ddc9 | 2601 | doc: /* Ask user a yes-or-no question. Return t if answer is yes. |
47cebab1 GM |
2602 | Takes one argument, which is the string to display to ask the question. |
2603 | It should end in a space; `yes-or-no-p' adds `(yes or no) ' to it. | |
2604 | The user must confirm the answer with RET, | |
2605 | and can edit it until it has been confirmed. | |
2606 | ||
2607 | Under a windowing system a dialog box will be used if `last-nonmenu-event' | |
e9d8ddc9 | 2608 | is nil, and `use-dialog-box' is non-nil. */) |
5842a27b | 2609 | (Lisp_Object prompt) |
7b863bd5 JB |
2610 | { |
2611 | register Lisp_Object ans; | |
2612 | Lisp_Object args[2]; | |
2613 | struct gcpro gcpro1; | |
2614 | ||
b7826503 | 2615 | CHECK_STRING (prompt); |
7b863bd5 | 2616 | |
0ef68e8a | 2617 | #ifdef HAVE_MENUS |
62af879c KL |
2618 | if (FRAME_WINDOW_P (SELECTED_FRAME ()) |
2619 | && (NILP (last_nonmenu_event) || CONSP (last_nonmenu_event)) | |
bdd8d692 | 2620 | && use_dialog_box |
0ef68e8a | 2621 | && have_menus_p ()) |
1db4cfb2 RS |
2622 | { |
2623 | Lisp_Object pane, menu, obj; | |
3007ebfb | 2624 | redisplay_preserve_echo_area (4); |
1db4cfb2 RS |
2625 | pane = Fcons (Fcons (build_string ("Yes"), Qt), |
2626 | Fcons (Fcons (build_string ("No"), Qnil), | |
2627 | Qnil)); | |
2628 | GCPRO1 (pane); | |
ec26e1b9 | 2629 | menu = Fcons (prompt, pane); |
f0a31d70 | 2630 | obj = Fx_popup_dialog (Qt, menu, Qnil); |
1db4cfb2 RS |
2631 | UNGCPRO; |
2632 | return obj; | |
2633 | } | |
0ef68e8a | 2634 | #endif /* HAVE_MENUS */ |
1db4cfb2 | 2635 | |
7b863bd5 JB |
2636 | args[0] = prompt; |
2637 | args[1] = build_string ("(yes or no) "); | |
2638 | prompt = Fconcat (2, args); | |
2639 | ||
2640 | GCPRO1 (prompt); | |
1db4cfb2 | 2641 | |
7b863bd5 JB |
2642 | while (1) |
2643 | { | |
0ce830bc | 2644 | ans = Fdowncase (Fread_from_minibuffer (prompt, Qnil, Qnil, Qnil, |
b24014d4 | 2645 | Qyes_or_no_p_history, Qnil, |
ba139299 | 2646 | Qnil)); |
d5db4077 | 2647 | if (SCHARS (ans) == 3 && !strcmp (SDATA (ans), "yes")) |
7b863bd5 JB |
2648 | { |
2649 | UNGCPRO; | |
2650 | return Qt; | |
2651 | } | |
d5db4077 | 2652 | if (SCHARS (ans) == 2 && !strcmp (SDATA (ans), "no")) |
7b863bd5 JB |
2653 | { |
2654 | UNGCPRO; | |
2655 | return Qnil; | |
2656 | } | |
2657 | ||
2658 | Fding (Qnil); | |
2659 | Fdiscard_input (); | |
2660 | message ("Please answer yes or no."); | |
99dc4745 | 2661 | Fsleep_for (make_number (2), Qnil); |
7b863bd5 | 2662 | } |
7b863bd5 JB |
2663 | } |
2664 | \f | |
f4b50f66 | 2665 | DEFUN ("load-average", Fload_average, Sload_average, 0, 1, 0, |
e9d8ddc9 | 2666 | doc: /* Return list of 1 minute, 5 minute and 15 minute load averages. |
91f78c99 | 2667 | |
47cebab1 GM |
2668 | Each of the three load averages is multiplied by 100, then converted |
2669 | to integer. | |
2670 | ||
2671 | When USE-FLOATS is non-nil, floats will be used instead of integers. | |
2672 | These floats are not multiplied by 100. | |
2673 | ||
2674 | If the 5-minute or 15-minute load averages are not available, return a | |
30b1b0cf DL |
2675 | shortened list, containing only those averages which are available. |
2676 | ||
2677 | An error is thrown if the load average can't be obtained. In some | |
2678 | cases making it work would require Emacs being installed setuid or | |
2679 | setgid so that it can read kernel information, and that usually isn't | |
2680 | advisable. */) | |
5842a27b | 2681 | (Lisp_Object use_floats) |
7b863bd5 | 2682 | { |
daa37602 JB |
2683 | double load_ave[3]; |
2684 | int loads = getloadavg (load_ave, 3); | |
f4b50f66 | 2685 | Lisp_Object ret = Qnil; |
7b863bd5 | 2686 | |
daa37602 JB |
2687 | if (loads < 0) |
2688 | error ("load-average not implemented for this operating system"); | |
2689 | ||
f4b50f66 RS |
2690 | while (loads-- > 0) |
2691 | { | |
2692 | Lisp_Object load = (NILP (use_floats) ? | |
2693 | make_number ((int) (100.0 * load_ave[loads])) | |
2694 | : make_float (load_ave[loads])); | |
2695 | ret = Fcons (load, ret); | |
2696 | } | |
daa37602 JB |
2697 | |
2698 | return ret; | |
2699 | } | |
7b863bd5 | 2700 | \f |
b56ba8de | 2701 | Lisp_Object Vfeatures, Qsubfeatures; |
7b863bd5 | 2702 | |
65550192 | 2703 | DEFUN ("featurep", Ffeaturep, Sfeaturep, 1, 2, 0, |
b756c005 | 2704 | doc: /* Return t if FEATURE is present in this Emacs. |
91f78c99 | 2705 | |
47cebab1 | 2706 | Use this to conditionalize execution of lisp code based on the |
4774b68e | 2707 | presence or absence of Emacs or environment extensions. |
47cebab1 GM |
2708 | Use `provide' to declare that a feature is available. This function |
2709 | looks at the value of the variable `features'. The optional argument | |
e9d8ddc9 | 2710 | SUBFEATURE can be used to check a specific subfeature of FEATURE. */) |
5842a27b | 2711 | (Lisp_Object feature, Lisp_Object subfeature) |
7b863bd5 JB |
2712 | { |
2713 | register Lisp_Object tem; | |
b7826503 | 2714 | CHECK_SYMBOL (feature); |
7b863bd5 | 2715 | tem = Fmemq (feature, Vfeatures); |
65550192 | 2716 | if (!NILP (tem) && !NILP (subfeature)) |
37ebddef | 2717 | tem = Fmember (subfeature, Fget (feature, Qsubfeatures)); |
265a9e55 | 2718 | return (NILP (tem)) ? Qnil : Qt; |
7b863bd5 JB |
2719 | } |
2720 | ||
65550192 | 2721 | DEFUN ("provide", Fprovide, Sprovide, 1, 2, 0, |
e9d8ddc9 | 2722 | doc: /* Announce that FEATURE is a feature of the current Emacs. |
47cebab1 | 2723 | The optional argument SUBFEATURES should be a list of symbols listing |
e9d8ddc9 | 2724 | particular subfeatures supported in this version of FEATURE. */) |
5842a27b | 2725 | (Lisp_Object feature, Lisp_Object subfeatures) |
7b863bd5 JB |
2726 | { |
2727 | register Lisp_Object tem; | |
b7826503 | 2728 | CHECK_SYMBOL (feature); |
37ebddef | 2729 | CHECK_LIST (subfeatures); |
265a9e55 | 2730 | if (!NILP (Vautoload_queue)) |
989e66e1 RS |
2731 | Vautoload_queue = Fcons (Fcons (make_number (0), Vfeatures), |
2732 | Vautoload_queue); | |
7b863bd5 | 2733 | tem = Fmemq (feature, Vfeatures); |
265a9e55 | 2734 | if (NILP (tem)) |
7b863bd5 | 2735 | Vfeatures = Fcons (feature, Vfeatures); |
65550192 SM |
2736 | if (!NILP (subfeatures)) |
2737 | Fput (feature, Qsubfeatures, subfeatures); | |
68732608 | 2738 | LOADHIST_ATTACH (Fcons (Qprovide, feature)); |
65550192 SM |
2739 | |
2740 | /* Run any load-hooks for this file. */ | |
2741 | tem = Fassq (feature, Vafter_load_alist); | |
cf42cb72 SM |
2742 | if (CONSP (tem)) |
2743 | Fprogn (XCDR (tem)); | |
65550192 | 2744 | |
7b863bd5 JB |
2745 | return feature; |
2746 | } | |
1f79789d RS |
2747 | \f |
2748 | /* `require' and its subroutines. */ | |
2749 | ||
2750 | /* List of features currently being require'd, innermost first. */ | |
2751 | ||
2752 | Lisp_Object require_nesting_list; | |
2753 | ||
b9d9a9b9 | 2754 | Lisp_Object |
971de7fb | 2755 | require_unwind (Lisp_Object old_value) |
1f79789d | 2756 | { |
b9d9a9b9 | 2757 | return require_nesting_list = old_value; |
1f79789d | 2758 | } |
7b863bd5 | 2759 | |
53d5acf5 | 2760 | DEFUN ("require", Frequire, Srequire, 1, 3, 0, |
e9d8ddc9 | 2761 | doc: /* If feature FEATURE is not loaded, load it from FILENAME. |
47cebab1 GM |
2762 | If FEATURE is not a member of the list `features', then the feature |
2763 | is not loaded; so load the file FILENAME. | |
2764 | If FILENAME is omitted, the printname of FEATURE is used as the file name, | |
6b61353c KH |
2765 | and `load' will try to load this name appended with the suffix `.elc' or |
2766 | `.el', in that order. The name without appended suffix will not be used. | |
47cebab1 GM |
2767 | If the optional third argument NOERROR is non-nil, |
2768 | then return nil if the file is not found instead of signaling an error. | |
2769 | Normally the return value is FEATURE. | |
e9d8ddc9 | 2770 | The normal messages at start and end of loading FILENAME are suppressed. */) |
5842a27b | 2771 | (Lisp_Object feature, Lisp_Object filename, Lisp_Object noerror) |
7b863bd5 JB |
2772 | { |
2773 | register Lisp_Object tem; | |
1f79789d | 2774 | struct gcpro gcpro1, gcpro2; |
06100606 | 2775 | int from_file = load_in_progress; |
1f79789d | 2776 | |
b7826503 | 2777 | CHECK_SYMBOL (feature); |
1f79789d | 2778 | |
5ba8f83d | 2779 | /* Record the presence of `require' in this file |
9d5c2e7e RS |
2780 | even if the feature specified is already loaded. |
2781 | But not more than once in any file, | |
06100606 RS |
2782 | and not when we aren't loading or reading from a file. */ |
2783 | if (!from_file) | |
2784 | for (tem = Vcurrent_load_list; CONSP (tem); tem = XCDR (tem)) | |
2785 | if (NILP (XCDR (tem)) && STRINGP (XCAR (tem))) | |
2786 | from_file = 1; | |
2787 | ||
2788 | if (from_file) | |
9d5c2e7e RS |
2789 | { |
2790 | tem = Fcons (Qrequire, feature); | |
2791 | if (NILP (Fmember (tem, Vcurrent_load_list))) | |
2792 | LOADHIST_ATTACH (tem); | |
2793 | } | |
7b863bd5 | 2794 | tem = Fmemq (feature, Vfeatures); |
91f78c99 | 2795 | |
265a9e55 | 2796 | if (NILP (tem)) |
7b863bd5 | 2797 | { |
aed13378 | 2798 | int count = SPECPDL_INDEX (); |
1f79789d | 2799 | int nesting = 0; |
bcb31b2a | 2800 | |
aea6173f RS |
2801 | /* This is to make sure that loadup.el gives a clear picture |
2802 | of what files are preloaded and when. */ | |
bcb31b2a RS |
2803 | if (! NILP (Vpurify_flag)) |
2804 | error ("(require %s) while preparing to dump", | |
d5db4077 | 2805 | SDATA (SYMBOL_NAME (feature))); |
91f78c99 | 2806 | |
1f79789d RS |
2807 | /* A certain amount of recursive `require' is legitimate, |
2808 | but if we require the same feature recursively 3 times, | |
2809 | signal an error. */ | |
2810 | tem = require_nesting_list; | |
2811 | while (! NILP (tem)) | |
2812 | { | |
2813 | if (! NILP (Fequal (feature, XCAR (tem)))) | |
2814 | nesting++; | |
2815 | tem = XCDR (tem); | |
2816 | } | |
f707342d | 2817 | if (nesting > 3) |
1f79789d | 2818 | error ("Recursive `require' for feature `%s'", |
d5db4077 | 2819 | SDATA (SYMBOL_NAME (feature))); |
1f79789d RS |
2820 | |
2821 | /* Update the list for any nested `require's that occur. */ | |
2822 | record_unwind_protect (require_unwind, require_nesting_list); | |
2823 | require_nesting_list = Fcons (feature, require_nesting_list); | |
7b863bd5 JB |
2824 | |
2825 | /* Value saved here is to be restored into Vautoload_queue */ | |
2826 | record_unwind_protect (un_autoload, Vautoload_queue); | |
2827 | Vautoload_queue = Qt; | |
2828 | ||
1f79789d RS |
2829 | /* Load the file. */ |
2830 | GCPRO2 (feature, filename); | |
81a81c0f GM |
2831 | tem = Fload (NILP (filename) ? Fsymbol_name (feature) : filename, |
2832 | noerror, Qt, Qnil, (NILP (filename) ? Qt : Qnil)); | |
1f79789d RS |
2833 | UNGCPRO; |
2834 | ||
53d5acf5 RS |
2835 | /* If load failed entirely, return nil. */ |
2836 | if (NILP (tem)) | |
41857307 | 2837 | return unbind_to (count, Qnil); |
7b863bd5 JB |
2838 | |
2839 | tem = Fmemq (feature, Vfeatures); | |
265a9e55 | 2840 | if (NILP (tem)) |
1f79789d | 2841 | error ("Required feature `%s' was not provided", |
d5db4077 | 2842 | SDATA (SYMBOL_NAME (feature))); |
7b863bd5 JB |
2843 | |
2844 | /* Once loading finishes, don't undo it. */ | |
2845 | Vautoload_queue = Qt; | |
2846 | feature = unbind_to (count, feature); | |
2847 | } | |
1f79789d | 2848 | |
7b863bd5 JB |
2849 | return feature; |
2850 | } | |
2851 | \f | |
b4f334f7 KH |
2852 | /* Primitives for work of the "widget" library. |
2853 | In an ideal world, this section would not have been necessary. | |
2854 | However, lisp function calls being as slow as they are, it turns | |
2855 | out that some functions in the widget library (wid-edit.el) are the | |
2856 | bottleneck of Widget operation. Here is their translation to C, | |
2857 | for the sole reason of efficiency. */ | |
2858 | ||
a5254817 | 2859 | DEFUN ("plist-member", Fplist_member, Splist_member, 2, 2, 0, |
e9d8ddc9 | 2860 | doc: /* Return non-nil if PLIST has the property PROP. |
47cebab1 GM |
2861 | PLIST is a property list, which is a list of the form |
2862 | \(PROP1 VALUE1 PROP2 VALUE2 ...\). PROP is a symbol. | |
2863 | Unlike `plist-get', this allows you to distinguish between a missing | |
2864 | property and a property with the value nil. | |
e9d8ddc9 | 2865 | The value is actually the tail of PLIST whose car is PROP. */) |
5842a27b | 2866 | (Lisp_Object plist, Lisp_Object prop) |
b4f334f7 KH |
2867 | { |
2868 | while (CONSP (plist) && !EQ (XCAR (plist), prop)) | |
2869 | { | |
2870 | QUIT; | |
2871 | plist = XCDR (plist); | |
2872 | plist = CDR (plist); | |
2873 | } | |
2874 | return plist; | |
2875 | } | |
2876 | ||
2877 | DEFUN ("widget-put", Fwidget_put, Swidget_put, 3, 3, 0, | |
e9d8ddc9 MB |
2878 | doc: /* In WIDGET, set PROPERTY to VALUE. |
2879 | The value can later be retrieved with `widget-get'. */) | |
5842a27b | 2880 | (Lisp_Object widget, Lisp_Object property, Lisp_Object value) |
b4f334f7 | 2881 | { |
b7826503 | 2882 | CHECK_CONS (widget); |
f3fbd155 | 2883 | XSETCDR (widget, Fplist_put (XCDR (widget), property, value)); |
f7993597 | 2884 | return value; |
b4f334f7 KH |
2885 | } |
2886 | ||
2887 | DEFUN ("widget-get", Fwidget_get, Swidget_get, 2, 2, 0, | |
e9d8ddc9 | 2888 | doc: /* In WIDGET, get the value of PROPERTY. |
47cebab1 | 2889 | The value could either be specified when the widget was created, or |
e9d8ddc9 | 2890 | later with `widget-put'. */) |
5842a27b | 2891 | (Lisp_Object widget, Lisp_Object property) |
b4f334f7 KH |
2892 | { |
2893 | Lisp_Object tmp; | |
2894 | ||
2895 | while (1) | |
2896 | { | |
2897 | if (NILP (widget)) | |
2898 | return Qnil; | |
b7826503 | 2899 | CHECK_CONS (widget); |
a5254817 | 2900 | tmp = Fplist_member (XCDR (widget), property); |
b4f334f7 KH |
2901 | if (CONSP (tmp)) |
2902 | { | |
2903 | tmp = XCDR (tmp); | |
2904 | return CAR (tmp); | |
2905 | } | |
2906 | tmp = XCAR (widget); | |
2907 | if (NILP (tmp)) | |
2908 | return Qnil; | |
2909 | widget = Fget (tmp, Qwidget_type); | |
2910 | } | |
2911 | } | |
2912 | ||
2913 | DEFUN ("widget-apply", Fwidget_apply, Swidget_apply, 2, MANY, 0, | |
e9d8ddc9 | 2914 | doc: /* Apply the value of WIDGET's PROPERTY to the widget itself. |
4bf8e2a3 MB |
2915 | ARGS are passed as extra arguments to the function. |
2916 | usage: (widget-apply WIDGET PROPERTY &rest ARGS) */) | |
5842a27b | 2917 | (int nargs, Lisp_Object *args) |
b4f334f7 KH |
2918 | { |
2919 | /* This function can GC. */ | |
2920 | Lisp_Object newargs[3]; | |
2921 | struct gcpro gcpro1, gcpro2; | |
2922 | Lisp_Object result; | |
2923 | ||
2924 | newargs[0] = Fwidget_get (args[0], args[1]); | |
2925 | newargs[1] = args[0]; | |
2926 | newargs[2] = Flist (nargs - 2, args + 2); | |
2927 | GCPRO2 (newargs[0], newargs[2]); | |
2928 | result = Fapply (3, newargs); | |
2929 | UNGCPRO; | |
2930 | return result; | |
2931 | } | |
dec002ca DL |
2932 | |
2933 | #ifdef HAVE_LANGINFO_CODESET | |
2934 | #include <langinfo.h> | |
2935 | #endif | |
2936 | ||
d68beb2f RS |
2937 | DEFUN ("locale-info", Flocale_info, Slocale_info, 1, 1, 0, |
2938 | doc: /* Access locale data ITEM for the current C locale, if available. | |
2939 | ITEM should be one of the following: | |
30b1b0cf | 2940 | |
98aeeaa1 | 2941 | `codeset', returning the character set as a string (locale item CODESET); |
30b1b0cf | 2942 | |
98aeeaa1 | 2943 | `days', returning a 7-element vector of day names (locale items DAY_n); |
30b1b0cf | 2944 | |
98aeeaa1 | 2945 | `months', returning a 12-element vector of month names (locale items MON_n); |
30b1b0cf | 2946 | |
d68beb2f RS |
2947 | `paper', returning a list (WIDTH HEIGHT) for the default paper size, |
2948 | both measured in milimeters (locale items PAPER_WIDTH, PAPER_HEIGHT). | |
dec002ca DL |
2949 | |
2950 | If the system can't provide such information through a call to | |
d68beb2f | 2951 | `nl_langinfo', or if ITEM isn't from the list above, return nil. |
dec002ca | 2952 | |
98aeeaa1 DL |
2953 | See also Info node `(libc)Locales'. |
2954 | ||
dec002ca | 2955 | The data read from the system are decoded using `locale-coding-system'. */) |
5842a27b | 2956 | (Lisp_Object item) |
dec002ca DL |
2957 | { |
2958 | char *str = NULL; | |
2959 | #ifdef HAVE_LANGINFO_CODESET | |
2960 | Lisp_Object val; | |
2961 | if (EQ (item, Qcodeset)) | |
2962 | { | |
2963 | str = nl_langinfo (CODESET); | |
2964 | return build_string (str); | |
2965 | } | |
2966 | #ifdef DAY_1 | |
2967 | else if (EQ (item, Qdays)) /* e.g. for calendar-day-name-array */ | |
2968 | { | |
2969 | Lisp_Object v = Fmake_vector (make_number (7), Qnil); | |
77bf07e1 | 2970 | const int days[7] = {DAY_1, DAY_2, DAY_3, DAY_4, DAY_5, DAY_6, DAY_7}; |
dec002ca | 2971 | int i; |
77bf07e1 AS |
2972 | struct gcpro gcpro1; |
2973 | GCPRO1 (v); | |
dec002ca DL |
2974 | synchronize_system_time_locale (); |
2975 | for (i = 0; i < 7; i++) | |
2976 | { | |
2977 | str = nl_langinfo (days[i]); | |
2978 | val = make_unibyte_string (str, strlen (str)); | |
2979 | /* Fixme: Is this coding system necessarily right, even if | |
2980 | it is consistent with CODESET? If not, what to do? */ | |
2981 | Faset (v, make_number (i), | |
2982 | code_convert_string_norecord (val, Vlocale_coding_system, | |
e52bd6b7 | 2983 | 0)); |
dec002ca | 2984 | } |
77bf07e1 | 2985 | UNGCPRO; |
dec002ca DL |
2986 | return v; |
2987 | } | |
2988 | #endif /* DAY_1 */ | |
2989 | #ifdef MON_1 | |
2990 | else if (EQ (item, Qmonths)) /* e.g. for calendar-month-name-array */ | |
2991 | { | |
77bf07e1 AS |
2992 | Lisp_Object v = Fmake_vector (make_number (12), Qnil); |
2993 | const int months[12] = {MON_1, MON_2, MON_3, MON_4, MON_5, MON_6, MON_7, | |
2994 | MON_8, MON_9, MON_10, MON_11, MON_12}; | |
dec002ca | 2995 | int i; |
77bf07e1 AS |
2996 | struct gcpro gcpro1; |
2997 | GCPRO1 (v); | |
dec002ca DL |
2998 | synchronize_system_time_locale (); |
2999 | for (i = 0; i < 12; i++) | |
3000 | { | |
3001 | str = nl_langinfo (months[i]); | |
3002 | val = make_unibyte_string (str, strlen (str)); | |
77bf07e1 AS |
3003 | Faset (v, make_number (i), |
3004 | code_convert_string_norecord (val, Vlocale_coding_system, 0)); | |
dec002ca | 3005 | } |
77bf07e1 AS |
3006 | UNGCPRO; |
3007 | return v; | |
dec002ca DL |
3008 | } |
3009 | #endif /* MON_1 */ | |
3010 | /* LC_PAPER stuff isn't defined as accessible in glibc as of 2.3.1, | |
3011 | but is in the locale files. This could be used by ps-print. */ | |
3012 | #ifdef PAPER_WIDTH | |
3013 | else if (EQ (item, Qpaper)) | |
3014 | { | |
3015 | return list2 (make_number (nl_langinfo (PAPER_WIDTH)), | |
3016 | make_number (nl_langinfo (PAPER_HEIGHT))); | |
3017 | } | |
3018 | #endif /* PAPER_WIDTH */ | |
3019 | #endif /* HAVE_LANGINFO_CODESET*/ | |
30b1b0cf | 3020 | return Qnil; |
dec002ca | 3021 | } |
b4f334f7 | 3022 | \f |
a90e80bf | 3023 | /* base64 encode/decode functions (RFC 2045). |
24c129e4 KH |
3024 | Based on code from GNU recode. */ |
3025 | ||
3026 | #define MIME_LINE_LENGTH 76 | |
3027 | ||
3028 | #define IS_ASCII(Character) \ | |
3029 | ((Character) < 128) | |
3030 | #define IS_BASE64(Character) \ | |
3031 | (IS_ASCII (Character) && base64_char_to_value[Character] >= 0) | |
9a092df0 PF |
3032 | #define IS_BASE64_IGNORABLE(Character) \ |
3033 | ((Character) == ' ' || (Character) == '\t' || (Character) == '\n' \ | |
3034 | || (Character) == '\f' || (Character) == '\r') | |
3035 | ||
3036 | /* Used by base64_decode_1 to retrieve a non-base64-ignorable | |
3037 | character or return retval if there are no characters left to | |
3038 | process. */ | |
caff31d4 KH |
3039 | #define READ_QUADRUPLET_BYTE(retval) \ |
3040 | do \ | |
3041 | { \ | |
3042 | if (i == length) \ | |
3043 | { \ | |
3044 | if (nchars_return) \ | |
3045 | *nchars_return = nchars; \ | |
3046 | return (retval); \ | |
3047 | } \ | |
3048 | c = from[i++]; \ | |
3049 | } \ | |
9a092df0 | 3050 | while (IS_BASE64_IGNORABLE (c)) |
24c129e4 KH |
3051 | |
3052 | /* Table of characters coding the 64 values. */ | |
91433552 | 3053 | static const char base64_value_to_char[64] = |
24c129e4 KH |
3054 | { |
3055 | 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', /* 0- 9 */ | |
3056 | 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', /* 10-19 */ | |
3057 | 'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', /* 20-29 */ | |
3058 | 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', /* 30-39 */ | |
3059 | 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', /* 40-49 */ | |
3060 | 'y', 'z', '0', '1', '2', '3', '4', '5', '6', '7', /* 50-59 */ | |
3061 | '8', '9', '+', '/' /* 60-63 */ | |
3062 | }; | |
3063 | ||
3064 | /* Table of base64 values for first 128 characters. */ | |
91433552 | 3065 | static const short base64_char_to_value[128] = |
24c129e4 KH |
3066 | { |
3067 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0- 9 */ | |
3068 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 10- 19 */ | |
3069 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 20- 29 */ | |
3070 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 30- 39 */ | |
3071 | -1, -1, -1, 62, -1, -1, -1, 63, 52, 53, /* 40- 49 */ | |
3072 | 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, /* 50- 59 */ | |
3073 | -1, -1, -1, -1, -1, 0, 1, 2, 3, 4, /* 60- 69 */ | |
3074 | 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, /* 70- 79 */ | |
3075 | 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, /* 80- 89 */ | |
3076 | 25, -1, -1, -1, -1, -1, -1, 26, 27, 28, /* 90- 99 */ | |
3077 | 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, /* 100-109 */ | |
3078 | 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, /* 110-119 */ | |
3079 | 49, 50, 51, -1, -1, -1, -1, -1 /* 120-127 */ | |
3080 | }; | |
3081 | ||
3082 | /* The following diagram shows the logical steps by which three octets | |
3083 | get transformed into four base64 characters. | |
3084 | ||
3085 | .--------. .--------. .--------. | |
3086 | |aaaaaabb| |bbbbcccc| |ccdddddd| | |
3087 | `--------' `--------' `--------' | |
3088 | 6 2 4 4 2 6 | |
3089 | .--------+--------+--------+--------. | |
3090 | |00aaaaaa|00bbbbbb|00cccccc|00dddddd| | |
3091 | `--------+--------+--------+--------' | |
3092 | ||
3093 | .--------+--------+--------+--------. | |
3094 | |AAAAAAAA|BBBBBBBB|CCCCCCCC|DDDDDDDD| | |
3095 | `--------+--------+--------+--------' | |
3096 | ||
3097 | The octets are divided into 6 bit chunks, which are then encoded into | |
3098 | base64 characters. */ | |
3099 | ||
3100 | ||
f57e2426 J |
3101 | static int base64_encode_1 (const char *, char *, int, int, int); |
3102 | static int base64_decode_1 (const char *, char *, int, int, int *); | |
24c129e4 KH |
3103 | |
3104 | DEFUN ("base64-encode-region", Fbase64_encode_region, Sbase64_encode_region, | |
3105 | 2, 3, "r", | |
e9d8ddc9 | 3106 | doc: /* Base64-encode the region between BEG and END. |
47cebab1 GM |
3107 | Return the length of the encoded text. |
3108 | Optional third argument NO-LINE-BREAK means do not break long lines | |
e9d8ddc9 | 3109 | into shorter lines. */) |
5842a27b | 3110 | (Lisp_Object beg, Lisp_Object end, Lisp_Object no_line_break) |
24c129e4 KH |
3111 | { |
3112 | char *encoded; | |
3113 | int allength, length; | |
3114 | int ibeg, iend, encoded_length; | |
3115 | int old_pos = PT; | |
799c08ac | 3116 | USE_SAFE_ALLOCA; |
24c129e4 KH |
3117 | |
3118 | validate_region (&beg, &end); | |
3119 | ||
3120 | ibeg = CHAR_TO_BYTE (XFASTINT (beg)); | |
3121 | iend = CHAR_TO_BYTE (XFASTINT (end)); | |
3122 | move_gap_both (XFASTINT (beg), ibeg); | |
3123 | ||
3124 | /* We need to allocate enough room for encoding the text. | |
3125 | We need 33 1/3% more space, plus a newline every 76 | |
3126 | characters, and then we round up. */ | |
3127 | length = iend - ibeg; | |
3128 | allength = length + length/3 + 1; | |
3129 | allength += allength / MIME_LINE_LENGTH + 1 + 6; | |
3130 | ||
799c08ac | 3131 | SAFE_ALLOCA (encoded, char *, allength); |
24c129e4 | 3132 | encoded_length = base64_encode_1 (BYTE_POS_ADDR (ibeg), encoded, length, |
2efdd1b9 KH |
3133 | NILP (no_line_break), |
3134 | !NILP (current_buffer->enable_multibyte_characters)); | |
24c129e4 KH |
3135 | if (encoded_length > allength) |
3136 | abort (); | |
3137 | ||
2efdd1b9 KH |
3138 | if (encoded_length < 0) |
3139 | { | |
3140 | /* The encoding wasn't possible. */ | |
233f3db6 | 3141 | SAFE_FREE (); |
a90e80bf | 3142 | error ("Multibyte character in data for base64 encoding"); |
2efdd1b9 KH |
3143 | } |
3144 | ||
24c129e4 KH |
3145 | /* Now we have encoded the region, so we insert the new contents |
3146 | and delete the old. (Insert first in order to preserve markers.) */ | |
8b835738 | 3147 | SET_PT_BOTH (XFASTINT (beg), ibeg); |
24c129e4 | 3148 | insert (encoded, encoded_length); |
233f3db6 | 3149 | SAFE_FREE (); |
24c129e4 KH |
3150 | del_range_byte (ibeg + encoded_length, iend + encoded_length, 1); |
3151 | ||
3152 | /* If point was outside of the region, restore it exactly; else just | |
3153 | move to the beginning of the region. */ | |
3154 | if (old_pos >= XFASTINT (end)) | |
3155 | old_pos += encoded_length - (XFASTINT (end) - XFASTINT (beg)); | |
8b835738 AS |
3156 | else if (old_pos > XFASTINT (beg)) |
3157 | old_pos = XFASTINT (beg); | |
24c129e4 KH |
3158 | SET_PT (old_pos); |
3159 | ||
3160 | /* We return the length of the encoded text. */ | |
3161 | return make_number (encoded_length); | |
3162 | } | |
3163 | ||
3164 | DEFUN ("base64-encode-string", Fbase64_encode_string, Sbase64_encode_string, | |
c22554ac | 3165 | 1, 2, 0, |
e9d8ddc9 | 3166 | doc: /* Base64-encode STRING and return the result. |
47cebab1 | 3167 | Optional second argument NO-LINE-BREAK means do not break long lines |
e9d8ddc9 | 3168 | into shorter lines. */) |
5842a27b | 3169 | (Lisp_Object string, Lisp_Object no_line_break) |
24c129e4 KH |
3170 | { |
3171 | int allength, length, encoded_length; | |
3172 | char *encoded; | |
4b2e75e6 | 3173 | Lisp_Object encoded_string; |
799c08ac | 3174 | USE_SAFE_ALLOCA; |
24c129e4 | 3175 | |
b7826503 | 3176 | CHECK_STRING (string); |
24c129e4 | 3177 | |
7f8a0840 KH |
3178 | /* We need to allocate enough room for encoding the text. |
3179 | We need 33 1/3% more space, plus a newline every 76 | |
3180 | characters, and then we round up. */ | |
d5db4077 | 3181 | length = SBYTES (string); |
7f8a0840 KH |
3182 | allength = length + length/3 + 1; |
3183 | allength += allength / MIME_LINE_LENGTH + 1 + 6; | |
24c129e4 KH |
3184 | |
3185 | /* We need to allocate enough room for decoding the text. */ | |
799c08ac | 3186 | SAFE_ALLOCA (encoded, char *, allength); |
24c129e4 | 3187 | |
d5db4077 | 3188 | encoded_length = base64_encode_1 (SDATA (string), |
2efdd1b9 KH |
3189 | encoded, length, NILP (no_line_break), |
3190 | STRING_MULTIBYTE (string)); | |
24c129e4 KH |
3191 | if (encoded_length > allength) |
3192 | abort (); | |
3193 | ||
2efdd1b9 KH |
3194 | if (encoded_length < 0) |
3195 | { | |
3196 | /* The encoding wasn't possible. */ | |
233f3db6 | 3197 | SAFE_FREE (); |
a90e80bf | 3198 | error ("Multibyte character in data for base64 encoding"); |
2efdd1b9 KH |
3199 | } |
3200 | ||
4b2e75e6 | 3201 | encoded_string = make_unibyte_string (encoded, encoded_length); |
233f3db6 | 3202 | SAFE_FREE (); |
4b2e75e6 EZ |
3203 | |
3204 | return encoded_string; | |
24c129e4 KH |
3205 | } |
3206 | ||
3207 | static int | |
971de7fb | 3208 | base64_encode_1 (const char *from, char *to, int length, int line_break, int multibyte) |
24c129e4 KH |
3209 | { |
3210 | int counter = 0, i = 0; | |
3211 | char *e = to; | |
844eb643 | 3212 | int c; |
24c129e4 | 3213 | unsigned int value; |
2efdd1b9 | 3214 | int bytes; |
24c129e4 KH |
3215 | |
3216 | while (i < length) | |
3217 | { | |
2efdd1b9 KH |
3218 | if (multibyte) |
3219 | { | |
62a6e103 | 3220 | c = STRING_CHAR_AND_LENGTH (from + i, bytes); |
680d4b87 KH |
3221 | if (CHAR_BYTE8_P (c)) |
3222 | c = CHAR_TO_BYTE8 (c); | |
3223 | else if (c >= 256) | |
2efdd1b9 | 3224 | return -1; |
caff31d4 | 3225 | i += bytes; |
2efdd1b9 KH |
3226 | } |
3227 | else | |
3228 | c = from[i++]; | |
24c129e4 KH |
3229 | |
3230 | /* Wrap line every 76 characters. */ | |
3231 | ||
3232 | if (line_break) | |
3233 | { | |
3234 | if (counter < MIME_LINE_LENGTH / 4) | |
3235 | counter++; | |
3236 | else | |
3237 | { | |
3238 | *e++ = '\n'; | |
3239 | counter = 1; | |
3240 | } | |
3241 | } | |
3242 | ||
3243 | /* Process first byte of a triplet. */ | |
3244 | ||
3245 | *e++ = base64_value_to_char[0x3f & c >> 2]; | |
3246 | value = (0x03 & c) << 4; | |
3247 | ||
3248 | /* Process second byte of a triplet. */ | |
3249 | ||
3250 | if (i == length) | |
3251 | { | |
3252 | *e++ = base64_value_to_char[value]; | |
3253 | *e++ = '='; | |
3254 | *e++ = '='; | |
3255 | break; | |
3256 | } | |
3257 | ||
2efdd1b9 KH |
3258 | if (multibyte) |
3259 | { | |
62a6e103 | 3260 | c = STRING_CHAR_AND_LENGTH (from + i, bytes); |
680d4b87 KH |
3261 | if (CHAR_BYTE8_P (c)) |
3262 | c = CHAR_TO_BYTE8 (c); | |
3263 | else if (c >= 256) | |
9b40fbe6 | 3264 | return -1; |
caff31d4 | 3265 | i += bytes; |
2efdd1b9 KH |
3266 | } |
3267 | else | |
3268 | c = from[i++]; | |
24c129e4 KH |
3269 | |
3270 | *e++ = base64_value_to_char[value | (0x0f & c >> 4)]; | |
3271 | value = (0x0f & c) << 2; | |
3272 | ||
3273 | /* Process third byte of a triplet. */ | |
3274 | ||
3275 | if (i == length) | |
3276 | { | |
3277 | *e++ = base64_value_to_char[value]; | |
3278 | *e++ = '='; | |
3279 | break; | |
3280 | } | |
3281 | ||
2efdd1b9 KH |
3282 | if (multibyte) |
3283 | { | |
62a6e103 | 3284 | c = STRING_CHAR_AND_LENGTH (from + i, bytes); |
680d4b87 KH |
3285 | if (CHAR_BYTE8_P (c)) |
3286 | c = CHAR_TO_BYTE8 (c); | |
3287 | else if (c >= 256) | |
844eb643 | 3288 | return -1; |
caff31d4 | 3289 | i += bytes; |
2efdd1b9 KH |
3290 | } |
3291 | else | |
3292 | c = from[i++]; | |
24c129e4 KH |
3293 | |
3294 | *e++ = base64_value_to_char[value | (0x03 & c >> 6)]; | |
3295 | *e++ = base64_value_to_char[0x3f & c]; | |
3296 | } | |
3297 | ||
24c129e4 KH |
3298 | return e - to; |
3299 | } | |
3300 | ||
3301 | ||
3302 | DEFUN ("base64-decode-region", Fbase64_decode_region, Sbase64_decode_region, | |
47cebab1 | 3303 | 2, 2, "r", |
e9d8ddc9 | 3304 | doc: /* Base64-decode the region between BEG and END. |
47cebab1 | 3305 | Return the length of the decoded text. |
e9d8ddc9 | 3306 | If the region can't be decoded, signal an error and don't modify the buffer. */) |
5842a27b | 3307 | (Lisp_Object beg, Lisp_Object end) |
24c129e4 | 3308 | { |
caff31d4 | 3309 | int ibeg, iend, length, allength; |
24c129e4 KH |
3310 | char *decoded; |
3311 | int old_pos = PT; | |
3312 | int decoded_length; | |
9b703a38 | 3313 | int inserted_chars; |
caff31d4 | 3314 | int multibyte = !NILP (current_buffer->enable_multibyte_characters); |
799c08ac | 3315 | USE_SAFE_ALLOCA; |
24c129e4 KH |
3316 | |
3317 | validate_region (&beg, &end); | |
3318 | ||
3319 | ibeg = CHAR_TO_BYTE (XFASTINT (beg)); | |
3320 | iend = CHAR_TO_BYTE (XFASTINT (end)); | |
3321 | ||
3322 | length = iend - ibeg; | |
caff31d4 KH |
3323 | |
3324 | /* We need to allocate enough room for decoding the text. If we are | |
3325 | working on a multibyte buffer, each decoded code may occupy at | |
3326 | most two bytes. */ | |
3327 | allength = multibyte ? length * 2 : length; | |
799c08ac | 3328 | SAFE_ALLOCA (decoded, char *, allength); |
24c129e4 KH |
3329 | |
3330 | move_gap_both (XFASTINT (beg), ibeg); | |
caff31d4 KH |
3331 | decoded_length = base64_decode_1 (BYTE_POS_ADDR (ibeg), decoded, length, |
3332 | multibyte, &inserted_chars); | |
3333 | if (decoded_length > allength) | |
24c129e4 KH |
3334 | abort (); |
3335 | ||
3336 | if (decoded_length < 0) | |
8c217645 KH |
3337 | { |
3338 | /* The decoding wasn't possible. */ | |
233f3db6 | 3339 | SAFE_FREE (); |
a90e80bf | 3340 | error ("Invalid base64 data"); |
8c217645 | 3341 | } |
24c129e4 KH |
3342 | |
3343 | /* Now we have decoded the region, so we insert the new contents | |
3344 | and delete the old. (Insert first in order to preserve markers.) */ | |
59f953a2 | 3345 | TEMP_SET_PT_BOTH (XFASTINT (beg), ibeg); |
2efdd1b9 | 3346 | insert_1_both (decoded, inserted_chars, decoded_length, 0, 1, 0); |
233f3db6 | 3347 | SAFE_FREE (); |
799c08ac | 3348 | |
2efdd1b9 KH |
3349 | /* Delete the original text. */ |
3350 | del_range_both (PT, PT_BYTE, XFASTINT (end) + inserted_chars, | |
3351 | iend + decoded_length, 1); | |
24c129e4 KH |
3352 | |
3353 | /* If point was outside of the region, restore it exactly; else just | |
3354 | move to the beginning of the region. */ | |
3355 | if (old_pos >= XFASTINT (end)) | |
9b703a38 KH |
3356 | old_pos += inserted_chars - (XFASTINT (end) - XFASTINT (beg)); |
3357 | else if (old_pos > XFASTINT (beg)) | |
3358 | old_pos = XFASTINT (beg); | |
e52ad9c9 | 3359 | SET_PT (old_pos > ZV ? ZV : old_pos); |
24c129e4 | 3360 | |
9b703a38 | 3361 | return make_number (inserted_chars); |
24c129e4 KH |
3362 | } |
3363 | ||
3364 | DEFUN ("base64-decode-string", Fbase64_decode_string, Sbase64_decode_string, | |
3365 | 1, 1, 0, | |
e9d8ddc9 | 3366 | doc: /* Base64-decode STRING and return the result. */) |
5842a27b | 3367 | (Lisp_Object string) |
24c129e4 KH |
3368 | { |
3369 | char *decoded; | |
3370 | int length, decoded_length; | |
4b2e75e6 | 3371 | Lisp_Object decoded_string; |
799c08ac | 3372 | USE_SAFE_ALLOCA; |
24c129e4 | 3373 | |
b7826503 | 3374 | CHECK_STRING (string); |
24c129e4 | 3375 | |
d5db4077 | 3376 | length = SBYTES (string); |
24c129e4 | 3377 | /* We need to allocate enough room for decoding the text. */ |
799c08ac | 3378 | SAFE_ALLOCA (decoded, char *, length); |
24c129e4 | 3379 | |
8ec118cd | 3380 | /* The decoded result should be unibyte. */ |
d5db4077 | 3381 | decoded_length = base64_decode_1 (SDATA (string), decoded, length, |
8ec118cd | 3382 | 0, NULL); |
24c129e4 KH |
3383 | if (decoded_length > length) |
3384 | abort (); | |
3d6c79c5 | 3385 | else if (decoded_length >= 0) |
2efdd1b9 | 3386 | decoded_string = make_unibyte_string (decoded, decoded_length); |
3d6c79c5 GM |
3387 | else |
3388 | decoded_string = Qnil; | |
24c129e4 | 3389 | |
233f3db6 | 3390 | SAFE_FREE (); |
3d6c79c5 | 3391 | if (!STRINGP (decoded_string)) |
a90e80bf | 3392 | error ("Invalid base64 data"); |
4b2e75e6 EZ |
3393 | |
3394 | return decoded_string; | |
24c129e4 KH |
3395 | } |
3396 | ||
caff31d4 KH |
3397 | /* Base64-decode the data at FROM of LENGHT bytes into TO. If |
3398 | MULTIBYTE is nonzero, the decoded result should be in multibyte | |
3399 | form. If NCHARS_RETRUN is not NULL, store the number of produced | |
3400 | characters in *NCHARS_RETURN. */ | |
3401 | ||
24c129e4 | 3402 | static int |
971de7fb | 3403 | base64_decode_1 (const char *from, char *to, int length, int multibyte, int *nchars_return) |
24c129e4 | 3404 | { |
9a092df0 | 3405 | int i = 0; |
24c129e4 KH |
3406 | char *e = to; |
3407 | unsigned char c; | |
3408 | unsigned long value; | |
caff31d4 | 3409 | int nchars = 0; |
24c129e4 | 3410 | |
9a092df0 | 3411 | while (1) |
24c129e4 | 3412 | { |
9a092df0 | 3413 | /* Process first byte of a quadruplet. */ |
24c129e4 | 3414 | |
9a092df0 | 3415 | READ_QUADRUPLET_BYTE (e-to); |
24c129e4 KH |
3416 | |
3417 | if (!IS_BASE64 (c)) | |
3418 | return -1; | |
3419 | value = base64_char_to_value[c] << 18; | |
3420 | ||
3421 | /* Process second byte of a quadruplet. */ | |
3422 | ||
9a092df0 | 3423 | READ_QUADRUPLET_BYTE (-1); |
24c129e4 KH |
3424 | |
3425 | if (!IS_BASE64 (c)) | |
3426 | return -1; | |
3427 | value |= base64_char_to_value[c] << 12; | |
3428 | ||
caff31d4 | 3429 | c = (unsigned char) (value >> 16); |
5a38b8c5 KH |
3430 | if (multibyte && c >= 128) |
3431 | e += BYTE8_STRING (c, e); | |
caff31d4 KH |
3432 | else |
3433 | *e++ = c; | |
3434 | nchars++; | |
24c129e4 KH |
3435 | |
3436 | /* Process third byte of a quadruplet. */ | |
59f953a2 | 3437 | |
9a092df0 | 3438 | READ_QUADRUPLET_BYTE (-1); |
24c129e4 KH |
3439 | |
3440 | if (c == '=') | |
3441 | { | |
9a092df0 | 3442 | READ_QUADRUPLET_BYTE (-1); |
59f953a2 | 3443 | |
24c129e4 KH |
3444 | if (c != '=') |
3445 | return -1; | |
3446 | continue; | |
3447 | } | |
3448 | ||
3449 | if (!IS_BASE64 (c)) | |
3450 | return -1; | |
3451 | value |= base64_char_to_value[c] << 6; | |
3452 | ||
caff31d4 | 3453 | c = (unsigned char) (0xff & value >> 8); |
5a38b8c5 KH |
3454 | if (multibyte && c >= 128) |
3455 | e += BYTE8_STRING (c, e); | |
caff31d4 KH |
3456 | else |
3457 | *e++ = c; | |
3458 | nchars++; | |
24c129e4 KH |
3459 | |
3460 | /* Process fourth byte of a quadruplet. */ | |
3461 | ||
9a092df0 | 3462 | READ_QUADRUPLET_BYTE (-1); |
24c129e4 KH |
3463 | |
3464 | if (c == '=') | |
3465 | continue; | |
3466 | ||
3467 | if (!IS_BASE64 (c)) | |
3468 | return -1; | |
3469 | value |= base64_char_to_value[c]; | |
3470 | ||
caff31d4 | 3471 | c = (unsigned char) (0xff & value); |
5a38b8c5 KH |
3472 | if (multibyte && c >= 128) |
3473 | e += BYTE8_STRING (c, e); | |
caff31d4 KH |
3474 | else |
3475 | *e++ = c; | |
3476 | nchars++; | |
24c129e4 | 3477 | } |
24c129e4 | 3478 | } |
d80c6c11 GM |
3479 | |
3480 | ||
3481 | \f | |
3482 | /*********************************************************************** | |
3483 | ***** ***** | |
3484 | ***** Hash Tables ***** | |
3485 | ***** ***** | |
3486 | ***********************************************************************/ | |
3487 | ||
3488 | /* Implemented by gerd@gnu.org. This hash table implementation was | |
3489 | inspired by CMUCL hash tables. */ | |
3490 | ||
3491 | /* Ideas: | |
3492 | ||
3493 | 1. For small tables, association lists are probably faster than | |
3494 | hash tables because they have lower overhead. | |
3495 | ||
3496 | For uses of hash tables where the O(1) behavior of table | |
3497 | operations is not a requirement, it might therefore be a good idea | |
3498 | not to hash. Instead, we could just do a linear search in the | |
3499 | key_and_value vector of the hash table. This could be done | |
3500 | if a `:linear-search t' argument is given to make-hash-table. */ | |
3501 | ||
3502 | ||
d80c6c11 GM |
3503 | /* The list of all weak hash tables. Don't staticpro this one. */ |
3504 | ||
6c661ec9 | 3505 | struct Lisp_Hash_Table *weak_hash_tables; |
d80c6c11 GM |
3506 | |
3507 | /* Various symbols. */ | |
3508 | ||
f899c503 | 3509 | Lisp_Object Qhash_table_p, Qeq, Qeql, Qequal, Qkey, Qvalue; |
ee0403b3 | 3510 | Lisp_Object QCtest, QCsize, QCrehash_size, QCrehash_threshold, QCweakness; |
ec504e6f | 3511 | Lisp_Object Qhash_table_test, Qkey_or_value, Qkey_and_value; |
d80c6c11 GM |
3512 | |
3513 | /* Function prototypes. */ | |
3514 | ||
f57e2426 J |
3515 | static struct Lisp_Hash_Table *check_hash_table (Lisp_Object); |
3516 | static int get_key_arg (Lisp_Object, int, Lisp_Object *, char *); | |
3517 | static void maybe_resize_hash_table (struct Lisp_Hash_Table *); | |
3518 | static int cmpfn_eql (struct Lisp_Hash_Table *, Lisp_Object, unsigned, | |
3519 | Lisp_Object, unsigned); | |
3520 | static int cmpfn_equal (struct Lisp_Hash_Table *, Lisp_Object, unsigned, | |
3521 | Lisp_Object, unsigned); | |
3522 | static int cmpfn_user_defined (struct Lisp_Hash_Table *, Lisp_Object, | |
3523 | unsigned, Lisp_Object, unsigned); | |
3524 | static unsigned hashfn_eq (struct Lisp_Hash_Table *, Lisp_Object); | |
3525 | static unsigned hashfn_eql (struct Lisp_Hash_Table *, Lisp_Object); | |
3526 | static unsigned hashfn_equal (struct Lisp_Hash_Table *, Lisp_Object); | |
3527 | static unsigned hashfn_user_defined (struct Lisp_Hash_Table *, | |
3528 | Lisp_Object); | |
3529 | static unsigned sxhash_string (unsigned char *, int); | |
3530 | static unsigned sxhash_list (Lisp_Object, int); | |
3531 | static unsigned sxhash_vector (Lisp_Object, int); | |
3532 | static unsigned sxhash_bool_vector (Lisp_Object); | |
3533 | static int sweep_weak_table (struct Lisp_Hash_Table *, int); | |
d80c6c11 GM |
3534 | |
3535 | ||
3536 | \f | |
3537 | /*********************************************************************** | |
3538 | Utilities | |
3539 | ***********************************************************************/ | |
3540 | ||
3541 | /* If OBJ is a Lisp hash table, return a pointer to its struct | |
3542 | Lisp_Hash_Table. Otherwise, signal an error. */ | |
3543 | ||
3544 | static struct Lisp_Hash_Table * | |
971de7fb | 3545 | check_hash_table (Lisp_Object obj) |
d80c6c11 | 3546 | { |
b7826503 | 3547 | CHECK_HASH_TABLE (obj); |
d80c6c11 GM |
3548 | return XHASH_TABLE (obj); |
3549 | } | |
3550 | ||
3551 | ||
3552 | /* Value is the next integer I >= N, N >= 0 which is "almost" a prime | |
3553 | number. */ | |
3554 | ||
6e509e80 | 3555 | int |
971de7fb | 3556 | next_almost_prime (int n) |
d80c6c11 GM |
3557 | { |
3558 | if (n % 2 == 0) | |
3559 | n += 1; | |
3560 | if (n % 3 == 0) | |
3561 | n += 2; | |
3562 | if (n % 7 == 0) | |
3563 | n += 4; | |
3564 | return n; | |
3565 | } | |
3566 | ||
3567 | ||
3568 | /* Find KEY in ARGS which has size NARGS. Don't consider indices for | |
3569 | which USED[I] is non-zero. If found at index I in ARGS, set | |
3570 | USED[I] and USED[I + 1] to 1, and return I + 1. Otherwise return | |
3571 | -1. This function is used to extract a keyword/argument pair from | |
3572 | a DEFUN parameter list. */ | |
3573 | ||
3574 | static int | |
971de7fb | 3575 | get_key_arg (Lisp_Object key, int nargs, Lisp_Object *args, char *used) |
d80c6c11 GM |
3576 | { |
3577 | int i; | |
59f953a2 | 3578 | |
d80c6c11 GM |
3579 | for (i = 0; i < nargs - 1; ++i) |
3580 | if (!used[i] && EQ (args[i], key)) | |
3581 | break; | |
59f953a2 | 3582 | |
d80c6c11 GM |
3583 | if (i >= nargs - 1) |
3584 | i = -1; | |
3585 | else | |
3586 | { | |
3587 | used[i++] = 1; | |
3588 | used[i] = 1; | |
3589 | } | |
59f953a2 | 3590 | |
d80c6c11 GM |
3591 | return i; |
3592 | } | |
3593 | ||
3594 | ||
3595 | /* Return a Lisp vector which has the same contents as VEC but has | |
3596 | size NEW_SIZE, NEW_SIZE >= VEC->size. Entries in the resulting | |
3597 | vector that are not copied from VEC are set to INIT. */ | |
3598 | ||
fa7dad5b | 3599 | Lisp_Object |
971de7fb | 3600 | larger_vector (Lisp_Object vec, int new_size, Lisp_Object init) |
d80c6c11 GM |
3601 | { |
3602 | struct Lisp_Vector *v; | |
3603 | int i, old_size; | |
3604 | ||
3605 | xassert (VECTORP (vec)); | |
7edbb0da | 3606 | old_size = ASIZE (vec); |
d80c6c11 GM |
3607 | xassert (new_size >= old_size); |
3608 | ||
b3660ef6 | 3609 | v = allocate_vector (new_size); |
72af86bd | 3610 | memcpy (v->contents, XVECTOR (vec)->contents, old_size * sizeof *v->contents); |
d80c6c11 GM |
3611 | for (i = old_size; i < new_size; ++i) |
3612 | v->contents[i] = init; | |
3613 | XSETVECTOR (vec, v); | |
3614 | return vec; | |
3615 | } | |
3616 | ||
3617 | ||
3618 | /*********************************************************************** | |
3619 | Low-level Functions | |
3620 | ***********************************************************************/ | |
3621 | ||
d80c6c11 GM |
3622 | /* Compare KEY1 which has hash code HASH1 and KEY2 with hash code |
3623 | HASH2 in hash table H using `eql'. Value is non-zero if KEY1 and | |
3624 | KEY2 are the same. */ | |
3625 | ||
3626 | static int | |
971de7fb | 3627 | cmpfn_eql (struct Lisp_Hash_Table *h, Lisp_Object key1, unsigned int hash1, Lisp_Object key2, unsigned int hash2) |
d80c6c11 | 3628 | { |
2e5da676 GM |
3629 | return (FLOATP (key1) |
3630 | && FLOATP (key2) | |
e84b1dea | 3631 | && XFLOAT_DATA (key1) == XFLOAT_DATA (key2)); |
d80c6c11 GM |
3632 | } |
3633 | ||
3634 | ||
3635 | /* Compare KEY1 which has hash code HASH1 and KEY2 with hash code | |
3636 | HASH2 in hash table H using `equal'. Value is non-zero if KEY1 and | |
3637 | KEY2 are the same. */ | |
3638 | ||
3639 | static int | |
971de7fb | 3640 | cmpfn_equal (struct Lisp_Hash_Table *h, Lisp_Object key1, unsigned int hash1, Lisp_Object key2, unsigned int hash2) |
d80c6c11 | 3641 | { |
2e5da676 | 3642 | return hash1 == hash2 && !NILP (Fequal (key1, key2)); |
d80c6c11 GM |
3643 | } |
3644 | ||
59f953a2 | 3645 | |
d80c6c11 GM |
3646 | /* Compare KEY1 which has hash code HASH1, and KEY2 with hash code |
3647 | HASH2 in hash table H using H->user_cmp_function. Value is non-zero | |
3648 | if KEY1 and KEY2 are the same. */ | |
3649 | ||
3650 | static int | |
971de7fb | 3651 | cmpfn_user_defined (struct Lisp_Hash_Table *h, Lisp_Object key1, unsigned int hash1, Lisp_Object key2, unsigned int hash2) |
d80c6c11 GM |
3652 | { |
3653 | if (hash1 == hash2) | |
3654 | { | |
3655 | Lisp_Object args[3]; | |
59f953a2 | 3656 | |
d80c6c11 GM |
3657 | args[0] = h->user_cmp_function; |
3658 | args[1] = key1; | |
3659 | args[2] = key2; | |
3660 | return !NILP (Ffuncall (3, args)); | |
3661 | } | |
3662 | else | |
3663 | return 0; | |
3664 | } | |
3665 | ||
3666 | ||
3667 | /* Value is a hash code for KEY for use in hash table H which uses | |
3668 | `eq' to compare keys. The hash code returned is guaranteed to fit | |
3669 | in a Lisp integer. */ | |
3670 | ||
3671 | static unsigned | |
971de7fb | 3672 | hashfn_eq (struct Lisp_Hash_Table *h, Lisp_Object key) |
d80c6c11 | 3673 | { |
8e50cc2d | 3674 | unsigned hash = XUINT (key) ^ XTYPE (key); |
6b61353c | 3675 | xassert ((hash & ~INTMASK) == 0); |
cf681889 | 3676 | return hash; |
d80c6c11 GM |
3677 | } |
3678 | ||
3679 | ||
3680 | /* Value is a hash code for KEY for use in hash table H which uses | |
3681 | `eql' to compare keys. The hash code returned is guaranteed to fit | |
3682 | in a Lisp integer. */ | |
3683 | ||
3684 | static unsigned | |
971de7fb | 3685 | hashfn_eql (struct Lisp_Hash_Table *h, Lisp_Object key) |
d80c6c11 | 3686 | { |
cf681889 GM |
3687 | unsigned hash; |
3688 | if (FLOATP (key)) | |
3689 | hash = sxhash (key, 0); | |
d80c6c11 | 3690 | else |
8e50cc2d | 3691 | hash = XUINT (key) ^ XTYPE (key); |
6b61353c | 3692 | xassert ((hash & ~INTMASK) == 0); |
cf681889 | 3693 | return hash; |
d80c6c11 GM |
3694 | } |
3695 | ||
3696 | ||
3697 | /* Value is a hash code for KEY for use in hash table H which uses | |
3698 | `equal' to compare keys. The hash code returned is guaranteed to fit | |
3699 | in a Lisp integer. */ | |
3700 | ||
3701 | static unsigned | |
971de7fb | 3702 | hashfn_equal (struct Lisp_Hash_Table *h, Lisp_Object key) |
d80c6c11 | 3703 | { |
cf681889 | 3704 | unsigned hash = sxhash (key, 0); |
6b61353c | 3705 | xassert ((hash & ~INTMASK) == 0); |
cf681889 | 3706 | return hash; |
d80c6c11 GM |
3707 | } |
3708 | ||
3709 | ||
3710 | /* Value is a hash code for KEY for use in hash table H which uses as | |
3711 | user-defined function to compare keys. The hash code returned is | |
3712 | guaranteed to fit in a Lisp integer. */ | |
3713 | ||
3714 | static unsigned | |
971de7fb | 3715 | hashfn_user_defined (struct Lisp_Hash_Table *h, Lisp_Object key) |
d80c6c11 GM |
3716 | { |
3717 | Lisp_Object args[2], hash; | |
59f953a2 | 3718 | |
d80c6c11 GM |
3719 | args[0] = h->user_hash_function; |
3720 | args[1] = key; | |
3721 | hash = Ffuncall (2, args); | |
3722 | if (!INTEGERP (hash)) | |
692ae65c | 3723 | signal_error ("Invalid hash code returned from user-supplied hash function", hash); |
d80c6c11 GM |
3724 | return XUINT (hash); |
3725 | } | |
3726 | ||
3727 | ||
3728 | /* Create and initialize a new hash table. | |
3729 | ||
3730 | TEST specifies the test the hash table will use to compare keys. | |
3731 | It must be either one of the predefined tests `eq', `eql' or | |
3732 | `equal' or a symbol denoting a user-defined test named TEST with | |
3733 | test and hash functions USER_TEST and USER_HASH. | |
59f953a2 | 3734 | |
1fd4c450 | 3735 | Give the table initial capacity SIZE, SIZE >= 0, an integer. |
d80c6c11 GM |
3736 | |
3737 | If REHASH_SIZE is an integer, it must be > 0, and this hash table's | |
3738 | new size when it becomes full is computed by adding REHASH_SIZE to | |
3739 | its old size. If REHASH_SIZE is a float, it must be > 1.0, and the | |
3740 | table's new size is computed by multiplying its old size with | |
3741 | REHASH_SIZE. | |
3742 | ||
3743 | REHASH_THRESHOLD must be a float <= 1.0, and > 0. The table will | |
3744 | be resized when the ratio of (number of entries in the table) / | |
3745 | (table size) is >= REHASH_THRESHOLD. | |
3746 | ||
3747 | WEAK specifies the weakness of the table. If non-nil, it must be | |
ec504e6f | 3748 | one of the symbols `key', `value', `key-or-value', or `key-and-value'. */ |
d80c6c11 GM |
3749 | |
3750 | Lisp_Object | |
d5a3eaaf AS |
3751 | make_hash_table (Lisp_Object test, Lisp_Object size, Lisp_Object rehash_size, |
3752 | Lisp_Object rehash_threshold, Lisp_Object weak, | |
3753 | Lisp_Object user_test, Lisp_Object user_hash) | |
d80c6c11 GM |
3754 | { |
3755 | struct Lisp_Hash_Table *h; | |
d80c6c11 | 3756 | Lisp_Object table; |
b3660ef6 | 3757 | int index_size, i, sz; |
d80c6c11 GM |
3758 | |
3759 | /* Preconditions. */ | |
3760 | xassert (SYMBOLP (test)); | |
1fd4c450 | 3761 | xassert (INTEGERP (size) && XINT (size) >= 0); |
d80c6c11 GM |
3762 | xassert ((INTEGERP (rehash_size) && XINT (rehash_size) > 0) |
3763 | || (FLOATP (rehash_size) && XFLOATINT (rehash_size) > 1.0)); | |
3764 | xassert (FLOATP (rehash_threshold) | |
3765 | && XFLOATINT (rehash_threshold) > 0 | |
3766 | && XFLOATINT (rehash_threshold) <= 1.0); | |
3767 | ||
1fd4c450 GM |
3768 | if (XFASTINT (size) == 0) |
3769 | size = make_number (1); | |
3770 | ||
b3660ef6 GM |
3771 | /* Allocate a table and initialize it. */ |
3772 | h = allocate_hash_table (); | |
d80c6c11 GM |
3773 | |
3774 | /* Initialize hash table slots. */ | |
3775 | sz = XFASTINT (size); | |
59f953a2 | 3776 | |
d80c6c11 GM |
3777 | h->test = test; |
3778 | if (EQ (test, Qeql)) | |
3779 | { | |
3780 | h->cmpfn = cmpfn_eql; | |
3781 | h->hashfn = hashfn_eql; | |
3782 | } | |
3783 | else if (EQ (test, Qeq)) | |
3784 | { | |
2e5da676 | 3785 | h->cmpfn = NULL; |
d80c6c11 GM |
3786 | h->hashfn = hashfn_eq; |
3787 | } | |
3788 | else if (EQ (test, Qequal)) | |
3789 | { | |
3790 | h->cmpfn = cmpfn_equal; | |
3791 | h->hashfn = hashfn_equal; | |
3792 | } | |
3793 | else | |
3794 | { | |
3795 | h->user_cmp_function = user_test; | |
3796 | h->user_hash_function = user_hash; | |
3797 | h->cmpfn = cmpfn_user_defined; | |
3798 | h->hashfn = hashfn_user_defined; | |
3799 | } | |
59f953a2 | 3800 | |
d80c6c11 GM |
3801 | h->weak = weak; |
3802 | h->rehash_threshold = rehash_threshold; | |
3803 | h->rehash_size = rehash_size; | |
878f97ff | 3804 | h->count = 0; |
d80c6c11 GM |
3805 | h->key_and_value = Fmake_vector (make_number (2 * sz), Qnil); |
3806 | h->hash = Fmake_vector (size, Qnil); | |
3807 | h->next = Fmake_vector (size, Qnil); | |
0690cb37 DL |
3808 | /* Cast to int here avoids losing with gcc 2.95 on Tru64/Alpha... */ |
3809 | index_size = next_almost_prime ((int) (sz / XFLOATINT (rehash_threshold))); | |
d80c6c11 GM |
3810 | h->index = Fmake_vector (make_number (index_size), Qnil); |
3811 | ||
3812 | /* Set up the free list. */ | |
3813 | for (i = 0; i < sz - 1; ++i) | |
3814 | HASH_NEXT (h, i) = make_number (i + 1); | |
3815 | h->next_free = make_number (0); | |
3816 | ||
3817 | XSET_HASH_TABLE (table, h); | |
3818 | xassert (HASH_TABLE_P (table)); | |
3819 | xassert (XHASH_TABLE (table) == h); | |
3820 | ||
3821 | /* Maybe add this hash table to the list of all weak hash tables. */ | |
3822 | if (NILP (h->weak)) | |
6c661ec9 | 3823 | h->next_weak = NULL; |
d80c6c11 GM |
3824 | else |
3825 | { | |
6c661ec9 SM |
3826 | h->next_weak = weak_hash_tables; |
3827 | weak_hash_tables = h; | |
d80c6c11 GM |
3828 | } |
3829 | ||
3830 | return table; | |
3831 | } | |
3832 | ||
3833 | ||
f899c503 GM |
3834 | /* Return a copy of hash table H1. Keys and values are not copied, |
3835 | only the table itself is. */ | |
3836 | ||
3837 | Lisp_Object | |
971de7fb | 3838 | copy_hash_table (struct Lisp_Hash_Table *h1) |
f899c503 GM |
3839 | { |
3840 | Lisp_Object table; | |
3841 | struct Lisp_Hash_Table *h2; | |
44dc78e0 | 3842 | struct Lisp_Vector *next; |
59f953a2 | 3843 | |
b3660ef6 | 3844 | h2 = allocate_hash_table (); |
f899c503 | 3845 | next = h2->vec_next; |
72af86bd | 3846 | memcpy (h2, h1, sizeof *h2); |
f899c503 GM |
3847 | h2->vec_next = next; |
3848 | h2->key_and_value = Fcopy_sequence (h1->key_and_value); | |
3849 | h2->hash = Fcopy_sequence (h1->hash); | |
3850 | h2->next = Fcopy_sequence (h1->next); | |
3851 | h2->index = Fcopy_sequence (h1->index); | |
3852 | XSET_HASH_TABLE (table, h2); | |
3853 | ||
3854 | /* Maybe add this hash table to the list of all weak hash tables. */ | |
3855 | if (!NILP (h2->weak)) | |
3856 | { | |
6c661ec9 SM |
3857 | h2->next_weak = weak_hash_tables; |
3858 | weak_hash_tables = h2; | |
f899c503 GM |
3859 | } |
3860 | ||
3861 | return table; | |
3862 | } | |
3863 | ||
3864 | ||
d80c6c11 GM |
3865 | /* Resize hash table H if it's too full. If H cannot be resized |
3866 | because it's already too large, throw an error. */ | |
3867 | ||
3868 | static INLINE void | |
971de7fb | 3869 | maybe_resize_hash_table (struct Lisp_Hash_Table *h) |
d80c6c11 GM |
3870 | { |
3871 | if (NILP (h->next_free)) | |
3872 | { | |
3873 | int old_size = HASH_TABLE_SIZE (h); | |
3874 | int i, new_size, index_size; | |
9bd1cd35 | 3875 | EMACS_INT nsize; |
59f953a2 | 3876 | |
d80c6c11 GM |
3877 | if (INTEGERP (h->rehash_size)) |
3878 | new_size = old_size + XFASTINT (h->rehash_size); | |
3879 | else | |
3880 | new_size = old_size * XFLOATINT (h->rehash_size); | |
0d6ba42e | 3881 | new_size = max (old_size + 1, new_size); |
0690cb37 DL |
3882 | index_size = next_almost_prime ((int) |
3883 | (new_size | |
3884 | / XFLOATINT (h->rehash_threshold))); | |
9bd1cd35 EZ |
3885 | /* Assignment to EMACS_INT stops GCC whining about limited range |
3886 | of data type. */ | |
3887 | nsize = max (index_size, 2 * new_size); | |
3888 | if (nsize > MOST_POSITIVE_FIXNUM) | |
d80c6c11 GM |
3889 | error ("Hash table too large to resize"); |
3890 | ||
3891 | h->key_and_value = larger_vector (h->key_and_value, 2 * new_size, Qnil); | |
3892 | h->next = larger_vector (h->next, new_size, Qnil); | |
3893 | h->hash = larger_vector (h->hash, new_size, Qnil); | |
3894 | h->index = Fmake_vector (make_number (index_size), Qnil); | |
3895 | ||
3896 | /* Update the free list. Do it so that new entries are added at | |
3897 | the end of the free list. This makes some operations like | |
3898 | maphash faster. */ | |
3899 | for (i = old_size; i < new_size - 1; ++i) | |
3900 | HASH_NEXT (h, i) = make_number (i + 1); | |
59f953a2 | 3901 | |
d80c6c11 GM |
3902 | if (!NILP (h->next_free)) |
3903 | { | |
3904 | Lisp_Object last, next; | |
59f953a2 | 3905 | |
d80c6c11 GM |
3906 | last = h->next_free; |
3907 | while (next = HASH_NEXT (h, XFASTINT (last)), | |
3908 | !NILP (next)) | |
3909 | last = next; | |
59f953a2 | 3910 | |
d80c6c11 GM |
3911 | HASH_NEXT (h, XFASTINT (last)) = make_number (old_size); |
3912 | } | |
3913 | else | |
3914 | XSETFASTINT (h->next_free, old_size); | |
3915 | ||
3916 | /* Rehash. */ | |
3917 | for (i = 0; i < old_size; ++i) | |
3918 | if (!NILP (HASH_HASH (h, i))) | |
3919 | { | |
3920 | unsigned hash_code = XUINT (HASH_HASH (h, i)); | |
7edbb0da | 3921 | int start_of_bucket = hash_code % ASIZE (h->index); |
d80c6c11 GM |
3922 | HASH_NEXT (h, i) = HASH_INDEX (h, start_of_bucket); |
3923 | HASH_INDEX (h, start_of_bucket) = make_number (i); | |
3924 | } | |
59f953a2 | 3925 | } |
d80c6c11 GM |
3926 | } |
3927 | ||
3928 | ||
3929 | /* Lookup KEY in hash table H. If HASH is non-null, return in *HASH | |
3930 | the hash code of KEY. Value is the index of the entry in H | |
3931 | matching KEY, or -1 if not found. */ | |
3932 | ||
3933 | int | |
971de7fb | 3934 | hash_lookup (struct Lisp_Hash_Table *h, Lisp_Object key, unsigned int *hash) |
d80c6c11 GM |
3935 | { |
3936 | unsigned hash_code; | |
3937 | int start_of_bucket; | |
3938 | Lisp_Object idx; | |
3939 | ||
3940 | hash_code = h->hashfn (h, key); | |
3941 | if (hash) | |
3942 | *hash = hash_code; | |
59f953a2 | 3943 | |
7edbb0da | 3944 | start_of_bucket = hash_code % ASIZE (h->index); |
d80c6c11 GM |
3945 | idx = HASH_INDEX (h, start_of_bucket); |
3946 | ||
f5c75033 | 3947 | /* We need not gcpro idx since it's either an integer or nil. */ |
d80c6c11 GM |
3948 | while (!NILP (idx)) |
3949 | { | |
3950 | int i = XFASTINT (idx); | |
2e5da676 GM |
3951 | if (EQ (key, HASH_KEY (h, i)) |
3952 | || (h->cmpfn | |
3953 | && h->cmpfn (h, key, hash_code, | |
7c752c80 | 3954 | HASH_KEY (h, i), XUINT (HASH_HASH (h, i))))) |
d80c6c11 GM |
3955 | break; |
3956 | idx = HASH_NEXT (h, i); | |
3957 | } | |
3958 | ||
3959 | return NILP (idx) ? -1 : XFASTINT (idx); | |
3960 | } | |
3961 | ||
3962 | ||
3963 | /* Put an entry into hash table H that associates KEY with VALUE. | |
64a5094a KH |
3964 | HASH is a previously computed hash code of KEY. |
3965 | Value is the index of the entry in H matching KEY. */ | |
d80c6c11 | 3966 | |
64a5094a | 3967 | int |
971de7fb | 3968 | hash_put (struct Lisp_Hash_Table *h, Lisp_Object key, Lisp_Object value, unsigned int hash) |
d80c6c11 GM |
3969 | { |
3970 | int start_of_bucket, i; | |
3971 | ||
6b61353c | 3972 | xassert ((hash & ~INTMASK) == 0); |
d80c6c11 GM |
3973 | |
3974 | /* Increment count after resizing because resizing may fail. */ | |
3975 | maybe_resize_hash_table (h); | |
878f97ff | 3976 | h->count++; |
59f953a2 | 3977 | |
d80c6c11 GM |
3978 | /* Store key/value in the key_and_value vector. */ |
3979 | i = XFASTINT (h->next_free); | |
3980 | h->next_free = HASH_NEXT (h, i); | |
3981 | HASH_KEY (h, i) = key; | |
3982 | HASH_VALUE (h, i) = value; | |
3983 | ||
3984 | /* Remember its hash code. */ | |
3985 | HASH_HASH (h, i) = make_number (hash); | |
3986 | ||
3987 | /* Add new entry to its collision chain. */ | |
7edbb0da | 3988 | start_of_bucket = hash % ASIZE (h->index); |
d80c6c11 GM |
3989 | HASH_NEXT (h, i) = HASH_INDEX (h, start_of_bucket); |
3990 | HASH_INDEX (h, start_of_bucket) = make_number (i); | |
64a5094a | 3991 | return i; |
d80c6c11 GM |
3992 | } |
3993 | ||
3994 | ||
3995 | /* Remove the entry matching KEY from hash table H, if there is one. */ | |
3996 | ||
2749d28e | 3997 | static void |
971de7fb | 3998 | hash_remove_from_table (struct Lisp_Hash_Table *h, Lisp_Object key) |
d80c6c11 GM |
3999 | { |
4000 | unsigned hash_code; | |
4001 | int start_of_bucket; | |
4002 | Lisp_Object idx, prev; | |
4003 | ||
4004 | hash_code = h->hashfn (h, key); | |
7edbb0da | 4005 | start_of_bucket = hash_code % ASIZE (h->index); |
d80c6c11 GM |
4006 | idx = HASH_INDEX (h, start_of_bucket); |
4007 | prev = Qnil; | |
4008 | ||
f5c75033 | 4009 | /* We need not gcpro idx, prev since they're either integers or nil. */ |
d80c6c11 GM |
4010 | while (!NILP (idx)) |
4011 | { | |
4012 | int i = XFASTINT (idx); | |
4013 | ||
2e5da676 GM |
4014 | if (EQ (key, HASH_KEY (h, i)) |
4015 | || (h->cmpfn | |
4016 | && h->cmpfn (h, key, hash_code, | |
7c752c80 | 4017 | HASH_KEY (h, i), XUINT (HASH_HASH (h, i))))) |
d80c6c11 GM |
4018 | { |
4019 | /* Take entry out of collision chain. */ | |
4020 | if (NILP (prev)) | |
4021 | HASH_INDEX (h, start_of_bucket) = HASH_NEXT (h, i); | |
4022 | else | |
4023 | HASH_NEXT (h, XFASTINT (prev)) = HASH_NEXT (h, i); | |
4024 | ||
4025 | /* Clear slots in key_and_value and add the slots to | |
4026 | the free list. */ | |
4027 | HASH_KEY (h, i) = HASH_VALUE (h, i) = HASH_HASH (h, i) = Qnil; | |
4028 | HASH_NEXT (h, i) = h->next_free; | |
4029 | h->next_free = make_number (i); | |
878f97ff SM |
4030 | h->count--; |
4031 | xassert (h->count >= 0); | |
d80c6c11 GM |
4032 | break; |
4033 | } | |
4034 | else | |
4035 | { | |
4036 | prev = idx; | |
4037 | idx = HASH_NEXT (h, i); | |
4038 | } | |
4039 | } | |
4040 | } | |
4041 | ||
4042 | ||
4043 | /* Clear hash table H. */ | |
4044 | ||
4045 | void | |
971de7fb | 4046 | hash_clear (struct Lisp_Hash_Table *h) |
d80c6c11 | 4047 | { |
878f97ff | 4048 | if (h->count > 0) |
d80c6c11 GM |
4049 | { |
4050 | int i, size = HASH_TABLE_SIZE (h); | |
4051 | ||
4052 | for (i = 0; i < size; ++i) | |
4053 | { | |
4054 | HASH_NEXT (h, i) = i < size - 1 ? make_number (i + 1) : Qnil; | |
4055 | HASH_KEY (h, i) = Qnil; | |
4056 | HASH_VALUE (h, i) = Qnil; | |
4057 | HASH_HASH (h, i) = Qnil; | |
4058 | } | |
4059 | ||
7edbb0da | 4060 | for (i = 0; i < ASIZE (h->index); ++i) |
68b587a6 | 4061 | ASET (h->index, i, Qnil); |
d80c6c11 GM |
4062 | |
4063 | h->next_free = make_number (0); | |
878f97ff | 4064 | h->count = 0; |
d80c6c11 GM |
4065 | } |
4066 | } | |
4067 | ||
4068 | ||
4069 | \f | |
4070 | /************************************************************************ | |
4071 | Weak Hash Tables | |
4072 | ************************************************************************/ | |
4073 | ||
14067ea7 | 4074 | void |
971de7fb | 4075 | init_weak_hash_tables (void) |
14067ea7 CY |
4076 | { |
4077 | weak_hash_tables = NULL; | |
4078 | } | |
4079 | ||
a0b581cc GM |
4080 | /* Sweep weak hash table H. REMOVE_ENTRIES_P non-zero means remove |
4081 | entries from the table that don't survive the current GC. | |
4082 | REMOVE_ENTRIES_P zero means mark entries that are in use. Value is | |
4083 | non-zero if anything was marked. */ | |
4084 | ||
4085 | static int | |
971de7fb | 4086 | sweep_weak_table (struct Lisp_Hash_Table *h, int remove_entries_p) |
a0b581cc GM |
4087 | { |
4088 | int bucket, n, marked; | |
59f953a2 | 4089 | |
7edbb0da | 4090 | n = ASIZE (h->index) & ~ARRAY_MARK_FLAG; |
a0b581cc | 4091 | marked = 0; |
59f953a2 | 4092 | |
a0b581cc GM |
4093 | for (bucket = 0; bucket < n; ++bucket) |
4094 | { | |
1e546714 | 4095 | Lisp_Object idx, next, prev; |
a0b581cc GM |
4096 | |
4097 | /* Follow collision chain, removing entries that | |
4098 | don't survive this garbage collection. */ | |
a0b581cc | 4099 | prev = Qnil; |
8e50cc2d | 4100 | for (idx = HASH_INDEX (h, bucket); !NILP (idx); idx = next) |
a0b581cc | 4101 | { |
a0b581cc | 4102 | int i = XFASTINT (idx); |
1e546714 GM |
4103 | int key_known_to_survive_p = survives_gc_p (HASH_KEY (h, i)); |
4104 | int value_known_to_survive_p = survives_gc_p (HASH_VALUE (h, i)); | |
4105 | int remove_p; | |
59f953a2 | 4106 | |
a0b581cc | 4107 | if (EQ (h->weak, Qkey)) |
aee625fa | 4108 | remove_p = !key_known_to_survive_p; |
a0b581cc | 4109 | else if (EQ (h->weak, Qvalue)) |
aee625fa | 4110 | remove_p = !value_known_to_survive_p; |
ec504e6f | 4111 | else if (EQ (h->weak, Qkey_or_value)) |
728c5d9d | 4112 | remove_p = !(key_known_to_survive_p || value_known_to_survive_p); |
ec504e6f | 4113 | else if (EQ (h->weak, Qkey_and_value)) |
728c5d9d | 4114 | remove_p = !(key_known_to_survive_p && value_known_to_survive_p); |
a0b581cc GM |
4115 | else |
4116 | abort (); | |
59f953a2 | 4117 | |
a0b581cc GM |
4118 | next = HASH_NEXT (h, i); |
4119 | ||
4120 | if (remove_entries_p) | |
4121 | { | |
4122 | if (remove_p) | |
4123 | { | |
4124 | /* Take out of collision chain. */ | |
8e50cc2d | 4125 | if (NILP (prev)) |
1e546714 | 4126 | HASH_INDEX (h, bucket) = next; |
a0b581cc GM |
4127 | else |
4128 | HASH_NEXT (h, XFASTINT (prev)) = next; | |
59f953a2 | 4129 | |
a0b581cc GM |
4130 | /* Add to free list. */ |
4131 | HASH_NEXT (h, i) = h->next_free; | |
4132 | h->next_free = idx; | |
59f953a2 | 4133 | |
a0b581cc GM |
4134 | /* Clear key, value, and hash. */ |
4135 | HASH_KEY (h, i) = HASH_VALUE (h, i) = Qnil; | |
4136 | HASH_HASH (h, i) = Qnil; | |
59f953a2 | 4137 | |
878f97ff | 4138 | h->count--; |
a0b581cc | 4139 | } |
d278cde0 KS |
4140 | else |
4141 | { | |
4142 | prev = idx; | |
4143 | } | |
a0b581cc GM |
4144 | } |
4145 | else | |
4146 | { | |
4147 | if (!remove_p) | |
4148 | { | |
4149 | /* Make sure key and value survive. */ | |
aee625fa GM |
4150 | if (!key_known_to_survive_p) |
4151 | { | |
9568e3d8 | 4152 | mark_object (HASH_KEY (h, i)); |
aee625fa GM |
4153 | marked = 1; |
4154 | } | |
4155 | ||
4156 | if (!value_known_to_survive_p) | |
4157 | { | |
9568e3d8 | 4158 | mark_object (HASH_VALUE (h, i)); |
aee625fa GM |
4159 | marked = 1; |
4160 | } | |
a0b581cc GM |
4161 | } |
4162 | } | |
a0b581cc GM |
4163 | } |
4164 | } | |
4165 | ||
4166 | return marked; | |
4167 | } | |
4168 | ||
d80c6c11 GM |
4169 | /* Remove elements from weak hash tables that don't survive the |
4170 | current garbage collection. Remove weak tables that don't survive | |
4171 | from Vweak_hash_tables. Called from gc_sweep. */ | |
4172 | ||
4173 | void | |
971de7fb | 4174 | sweep_weak_hash_tables (void) |
d80c6c11 | 4175 | { |
6c661ec9 | 4176 | struct Lisp_Hash_Table *h, *used, *next; |
a0b581cc GM |
4177 | int marked; |
4178 | ||
4179 | /* Mark all keys and values that are in use. Keep on marking until | |
4180 | there is no more change. This is necessary for cases like | |
4181 | value-weak table A containing an entry X -> Y, where Y is used in a | |
4182 | key-weak table B, Z -> Y. If B comes after A in the list of weak | |
4183 | tables, X -> Y might be removed from A, although when looking at B | |
4184 | one finds that it shouldn't. */ | |
4185 | do | |
4186 | { | |
4187 | marked = 0; | |
6c661ec9 | 4188 | for (h = weak_hash_tables; h; h = h->next_weak) |
a0b581cc | 4189 | { |
a0b581cc GM |
4190 | if (h->size & ARRAY_MARK_FLAG) |
4191 | marked |= sweep_weak_table (h, 0); | |
4192 | } | |
4193 | } | |
4194 | while (marked); | |
d80c6c11 | 4195 | |
a0b581cc | 4196 | /* Remove tables and entries that aren't used. */ |
6c661ec9 | 4197 | for (h = weak_hash_tables, used = NULL; h; h = next) |
d80c6c11 | 4198 | { |
ac0e96ee | 4199 | next = h->next_weak; |
91f78c99 | 4200 | |
d80c6c11 GM |
4201 | if (h->size & ARRAY_MARK_FLAG) |
4202 | { | |
ac0e96ee | 4203 | /* TABLE is marked as used. Sweep its contents. */ |
878f97ff | 4204 | if (h->count > 0) |
a0b581cc | 4205 | sweep_weak_table (h, 1); |
ac0e96ee GM |
4206 | |
4207 | /* Add table to the list of used weak hash tables. */ | |
4208 | h->next_weak = used; | |
6c661ec9 | 4209 | used = h; |
d80c6c11 GM |
4210 | } |
4211 | } | |
ac0e96ee | 4212 | |
6c661ec9 | 4213 | weak_hash_tables = used; |
d80c6c11 GM |
4214 | } |
4215 | ||
4216 | ||
4217 | \f | |
4218 | /*********************************************************************** | |
4219 | Hash Code Computation | |
4220 | ***********************************************************************/ | |
4221 | ||
4222 | /* Maximum depth up to which to dive into Lisp structures. */ | |
4223 | ||
4224 | #define SXHASH_MAX_DEPTH 3 | |
4225 | ||
4226 | /* Maximum length up to which to take list and vector elements into | |
4227 | account. */ | |
4228 | ||
4229 | #define SXHASH_MAX_LEN 7 | |
4230 | ||
4231 | /* Combine two integers X and Y for hashing. */ | |
4232 | ||
4233 | #define SXHASH_COMBINE(X, Y) \ | |
ada0fa14 | 4234 | ((((unsigned)(X) << 4) + (((unsigned)(X) >> 24) & 0x0fffffff)) \ |
d80c6c11 GM |
4235 | + (unsigned)(Y)) |
4236 | ||
4237 | ||
cf681889 GM |
4238 | /* Return a hash for string PTR which has length LEN. The hash |
4239 | code returned is guaranteed to fit in a Lisp integer. */ | |
d80c6c11 GM |
4240 | |
4241 | static unsigned | |
971de7fb | 4242 | sxhash_string (unsigned char *ptr, int len) |
d80c6c11 GM |
4243 | { |
4244 | unsigned char *p = ptr; | |
4245 | unsigned char *end = p + len; | |
4246 | unsigned char c; | |
4247 | unsigned hash = 0; | |
4248 | ||
4249 | while (p != end) | |
4250 | { | |
4251 | c = *p++; | |
4252 | if (c >= 0140) | |
4253 | c -= 40; | |
11f56bbc | 4254 | hash = ((hash << 4) + (hash >> 28) + c); |
d80c6c11 | 4255 | } |
59f953a2 | 4256 | |
6b61353c | 4257 | return hash & INTMASK; |
d80c6c11 GM |
4258 | } |
4259 | ||
4260 | ||
4261 | /* Return a hash for list LIST. DEPTH is the current depth in the | |
4262 | list. We don't recurse deeper than SXHASH_MAX_DEPTH in it. */ | |
4263 | ||
4264 | static unsigned | |
971de7fb | 4265 | sxhash_list (Lisp_Object list, int depth) |
d80c6c11 GM |
4266 | { |
4267 | unsigned hash = 0; | |
4268 | int i; | |
59f953a2 | 4269 | |
d80c6c11 GM |
4270 | if (depth < SXHASH_MAX_DEPTH) |
4271 | for (i = 0; | |
4272 | CONSP (list) && i < SXHASH_MAX_LEN; | |
4273 | list = XCDR (list), ++i) | |
4274 | { | |
4275 | unsigned hash2 = sxhash (XCAR (list), depth + 1); | |
4276 | hash = SXHASH_COMBINE (hash, hash2); | |
4277 | } | |
4278 | ||
ea284f33 KS |
4279 | if (!NILP (list)) |
4280 | { | |
4281 | unsigned hash2 = sxhash (list, depth + 1); | |
4282 | hash = SXHASH_COMBINE (hash, hash2); | |
4283 | } | |
4284 | ||
d80c6c11 GM |
4285 | return hash; |
4286 | } | |
4287 | ||
4288 | ||
4289 | /* Return a hash for vector VECTOR. DEPTH is the current depth in | |
4290 | the Lisp structure. */ | |
4291 | ||
4292 | static unsigned | |
971de7fb | 4293 | sxhash_vector (Lisp_Object vec, int depth) |
d80c6c11 | 4294 | { |
7edbb0da | 4295 | unsigned hash = ASIZE (vec); |
d80c6c11 GM |
4296 | int i, n; |
4297 | ||
7edbb0da | 4298 | n = min (SXHASH_MAX_LEN, ASIZE (vec)); |
d80c6c11 GM |
4299 | for (i = 0; i < n; ++i) |
4300 | { | |
7edbb0da | 4301 | unsigned hash2 = sxhash (AREF (vec, i), depth + 1); |
d80c6c11 GM |
4302 | hash = SXHASH_COMBINE (hash, hash2); |
4303 | } | |
4304 | ||
4305 | return hash; | |
4306 | } | |
4307 | ||
4308 | ||
4309 | /* Return a hash for bool-vector VECTOR. */ | |
4310 | ||
4311 | static unsigned | |
971de7fb | 4312 | sxhash_bool_vector (Lisp_Object vec) |
d80c6c11 GM |
4313 | { |
4314 | unsigned hash = XBOOL_VECTOR (vec)->size; | |
4315 | int i, n; | |
4316 | ||
4317 | n = min (SXHASH_MAX_LEN, XBOOL_VECTOR (vec)->vector_size); | |
4318 | for (i = 0; i < n; ++i) | |
4319 | hash = SXHASH_COMBINE (hash, XBOOL_VECTOR (vec)->data[i]); | |
4320 | ||
4321 | return hash; | |
4322 | } | |
4323 | ||
4324 | ||
4325 | /* Return a hash code for OBJ. DEPTH is the current depth in the Lisp | |
6b61353c | 4326 | structure. Value is an unsigned integer clipped to INTMASK. */ |
d80c6c11 GM |
4327 | |
4328 | unsigned | |
971de7fb | 4329 | sxhash (Lisp_Object obj, int depth) |
d80c6c11 GM |
4330 | { |
4331 | unsigned hash; | |
4332 | ||
4333 | if (depth > SXHASH_MAX_DEPTH) | |
4334 | return 0; | |
59f953a2 | 4335 | |
d80c6c11 GM |
4336 | switch (XTYPE (obj)) |
4337 | { | |
2de9f71c | 4338 | case_Lisp_Int: |
d80c6c11 GM |
4339 | hash = XUINT (obj); |
4340 | break; | |
4341 | ||
d80c6c11 GM |
4342 | case Lisp_Misc: |
4343 | hash = XUINT (obj); | |
4344 | break; | |
4345 | ||
32bfb2d5 EZ |
4346 | case Lisp_Symbol: |
4347 | obj = SYMBOL_NAME (obj); | |
4348 | /* Fall through. */ | |
4349 | ||
d80c6c11 | 4350 | case Lisp_String: |
d5db4077 | 4351 | hash = sxhash_string (SDATA (obj), SCHARS (obj)); |
d80c6c11 GM |
4352 | break; |
4353 | ||
4354 | /* This can be everything from a vector to an overlay. */ | |
4355 | case Lisp_Vectorlike: | |
4356 | if (VECTORP (obj)) | |
4357 | /* According to the CL HyperSpec, two arrays are equal only if | |
4358 | they are `eq', except for strings and bit-vectors. In | |
4359 | Emacs, this works differently. We have to compare element | |
4360 | by element. */ | |
4361 | hash = sxhash_vector (obj, depth); | |
4362 | else if (BOOL_VECTOR_P (obj)) | |
4363 | hash = sxhash_bool_vector (obj); | |
4364 | else | |
4365 | /* Others are `equal' if they are `eq', so let's take their | |
4366 | address as hash. */ | |
4367 | hash = XUINT (obj); | |
4368 | break; | |
4369 | ||
4370 | case Lisp_Cons: | |
4371 | hash = sxhash_list (obj, depth); | |
4372 | break; | |
4373 | ||
4374 | case Lisp_Float: | |
4375 | { | |
f601cdf3 KR |
4376 | double val = XFLOAT_DATA (obj); |
4377 | unsigned char *p = (unsigned char *) &val; | |
4378 | unsigned char *e = p + sizeof val; | |
d80c6c11 GM |
4379 | for (hash = 0; p < e; ++p) |
4380 | hash = SXHASH_COMBINE (hash, *p); | |
4381 | break; | |
4382 | } | |
4383 | ||
4384 | default: | |
4385 | abort (); | |
4386 | } | |
4387 | ||
6b61353c | 4388 | return hash & INTMASK; |
d80c6c11 GM |
4389 | } |
4390 | ||
4391 | ||
4392 | \f | |
4393 | /*********************************************************************** | |
4394 | Lisp Interface | |
4395 | ***********************************************************************/ | |
4396 | ||
4397 | ||
4398 | DEFUN ("sxhash", Fsxhash, Ssxhash, 1, 1, 0, | |
e9d8ddc9 | 4399 | doc: /* Compute a hash code for OBJ and return it as integer. */) |
5842a27b | 4400 | (Lisp_Object obj) |
d80c6c11 | 4401 | { |
3b8c0c70 | 4402 | unsigned hash = sxhash (obj, 0); |
d80c6c11 GM |
4403 | return make_number (hash); |
4404 | } | |
4405 | ||
4406 | ||
4407 | DEFUN ("make-hash-table", Fmake_hash_table, Smake_hash_table, 0, MANY, 0, | |
e9d8ddc9 | 4408 | doc: /* Create and return a new hash table. |
91f78c99 | 4409 | |
47cebab1 GM |
4410 | Arguments are specified as keyword/argument pairs. The following |
4411 | arguments are defined: | |
4412 | ||
4413 | :test TEST -- TEST must be a symbol that specifies how to compare | |
4414 | keys. Default is `eql'. Predefined are the tests `eq', `eql', and | |
4415 | `equal'. User-supplied test and hash functions can be specified via | |
4416 | `define-hash-table-test'. | |
4417 | ||
4418 | :size SIZE -- A hint as to how many elements will be put in the table. | |
4419 | Default is 65. | |
4420 | ||
4421 | :rehash-size REHASH-SIZE - Indicates how to expand the table when it | |
4422 | fills up. If REHASH-SIZE is an integer, add that many space. If it | |
4423 | is a float, it must be > 1.0, and the new size is computed by | |
4424 | multiplying the old size with that factor. Default is 1.5. | |
4425 | ||
4426 | :rehash-threshold THRESHOLD -- THRESHOLD must a float > 0, and <= 1.0. | |
b756c005 JB |
4427 | Resize the hash table when the ratio (number of entries / table size) |
4428 | is greater or equal than THRESHOLD. Default is 0.8. | |
47cebab1 GM |
4429 | |
4430 | :weakness WEAK -- WEAK must be one of nil, t, `key', `value', | |
4431 | `key-or-value', or `key-and-value'. If WEAK is not nil, the table | |
4432 | returned is a weak table. Key/value pairs are removed from a weak | |
4433 | hash table when there are no non-weak references pointing to their | |
4434 | key, value, one of key or value, or both key and value, depending on | |
4435 | WEAK. WEAK t is equivalent to `key-and-value'. Default value of WEAK | |
4bf8e2a3 MB |
4436 | is nil. |
4437 | ||
4438 | usage: (make-hash-table &rest KEYWORD-ARGS) */) | |
5842a27b | 4439 | (int nargs, Lisp_Object *args) |
d80c6c11 GM |
4440 | { |
4441 | Lisp_Object test, size, rehash_size, rehash_threshold, weak; | |
4442 | Lisp_Object user_test, user_hash; | |
4443 | char *used; | |
4444 | int i; | |
4445 | ||
4446 | /* The vector `used' is used to keep track of arguments that | |
4447 | have been consumed. */ | |
4448 | used = (char *) alloca (nargs * sizeof *used); | |
72af86bd | 4449 | memset (used, 0, nargs * sizeof *used); |
d80c6c11 GM |
4450 | |
4451 | /* See if there's a `:test TEST' among the arguments. */ | |
4452 | i = get_key_arg (QCtest, nargs, args, used); | |
4453 | test = i < 0 ? Qeql : args[i]; | |
4454 | if (!EQ (test, Qeq) && !EQ (test, Qeql) && !EQ (test, Qequal)) | |
4455 | { | |
4456 | /* See if it is a user-defined test. */ | |
4457 | Lisp_Object prop; | |
59f953a2 | 4458 | |
d80c6c11 | 4459 | prop = Fget (test, Qhash_table_test); |
c1dd95fc | 4460 | if (!CONSP (prop) || !CONSP (XCDR (prop))) |
692ae65c | 4461 | signal_error ("Invalid hash table test", test); |
c1dd95fc RS |
4462 | user_test = XCAR (prop); |
4463 | user_hash = XCAR (XCDR (prop)); | |
d80c6c11 GM |
4464 | } |
4465 | else | |
4466 | user_test = user_hash = Qnil; | |
4467 | ||
4468 | /* See if there's a `:size SIZE' argument. */ | |
4469 | i = get_key_arg (QCsize, nargs, args, used); | |
cf42cb72 SM |
4470 | size = i < 0 ? Qnil : args[i]; |
4471 | if (NILP (size)) | |
4472 | size = make_number (DEFAULT_HASH_SIZE); | |
4473 | else if (!INTEGERP (size) || XINT (size) < 0) | |
692ae65c | 4474 | signal_error ("Invalid hash table size", size); |
d80c6c11 GM |
4475 | |
4476 | /* Look for `:rehash-size SIZE'. */ | |
4477 | i = get_key_arg (QCrehash_size, nargs, args, used); | |
4478 | rehash_size = i < 0 ? make_float (DEFAULT_REHASH_SIZE) : args[i]; | |
4479 | if (!NUMBERP (rehash_size) | |
4480 | || (INTEGERP (rehash_size) && XINT (rehash_size) <= 0) | |
4481 | || XFLOATINT (rehash_size) <= 1.0) | |
692ae65c | 4482 | signal_error ("Invalid hash table rehash size", rehash_size); |
59f953a2 | 4483 | |
d80c6c11 GM |
4484 | /* Look for `:rehash-threshold THRESHOLD'. */ |
4485 | i = get_key_arg (QCrehash_threshold, nargs, args, used); | |
4486 | rehash_threshold = i < 0 ? make_float (DEFAULT_REHASH_THRESHOLD) : args[i]; | |
4487 | if (!FLOATP (rehash_threshold) | |
4488 | || XFLOATINT (rehash_threshold) <= 0.0 | |
4489 | || XFLOATINT (rehash_threshold) > 1.0) | |
692ae65c | 4490 | signal_error ("Invalid hash table rehash threshold", rehash_threshold); |
59f953a2 | 4491 | |
ee0403b3 GM |
4492 | /* Look for `:weakness WEAK'. */ |
4493 | i = get_key_arg (QCweakness, nargs, args, used); | |
d80c6c11 | 4494 | weak = i < 0 ? Qnil : args[i]; |
ec504e6f GM |
4495 | if (EQ (weak, Qt)) |
4496 | weak = Qkey_and_value; | |
d80c6c11 | 4497 | if (!NILP (weak) |
f899c503 | 4498 | && !EQ (weak, Qkey) |
ec504e6f GM |
4499 | && !EQ (weak, Qvalue) |
4500 | && !EQ (weak, Qkey_or_value) | |
4501 | && !EQ (weak, Qkey_and_value)) | |
692ae65c | 4502 | signal_error ("Invalid hash table weakness", weak); |
59f953a2 | 4503 | |
d80c6c11 GM |
4504 | /* Now, all args should have been used up, or there's a problem. */ |
4505 | for (i = 0; i < nargs; ++i) | |
4506 | if (!used[i]) | |
692ae65c | 4507 | signal_error ("Invalid argument list", args[i]); |
d80c6c11 GM |
4508 | |
4509 | return make_hash_table (test, size, rehash_size, rehash_threshold, weak, | |
4510 | user_test, user_hash); | |
4511 | } | |
4512 | ||
4513 | ||
f899c503 | 4514 | DEFUN ("copy-hash-table", Fcopy_hash_table, Scopy_hash_table, 1, 1, 0, |
e9d8ddc9 | 4515 | doc: /* Return a copy of hash table TABLE. */) |
5842a27b | 4516 | (Lisp_Object table) |
f899c503 GM |
4517 | { |
4518 | return copy_hash_table (check_hash_table (table)); | |
4519 | } | |
4520 | ||
4521 | ||
d80c6c11 | 4522 | DEFUN ("hash-table-count", Fhash_table_count, Shash_table_count, 1, 1, 0, |
e9d8ddc9 | 4523 | doc: /* Return the number of elements in TABLE. */) |
5842a27b | 4524 | (Lisp_Object table) |
d80c6c11 | 4525 | { |
878f97ff | 4526 | return make_number (check_hash_table (table)->count); |
d80c6c11 GM |
4527 | } |
4528 | ||
59f953a2 | 4529 | |
d80c6c11 GM |
4530 | DEFUN ("hash-table-rehash-size", Fhash_table_rehash_size, |
4531 | Shash_table_rehash_size, 1, 1, 0, | |
e9d8ddc9 | 4532 | doc: /* Return the current rehash size of TABLE. */) |
5842a27b | 4533 | (Lisp_Object table) |
d80c6c11 GM |
4534 | { |
4535 | return check_hash_table (table)->rehash_size; | |
4536 | } | |
59f953a2 | 4537 | |
d80c6c11 GM |
4538 | |
4539 | DEFUN ("hash-table-rehash-threshold", Fhash_table_rehash_threshold, | |
4540 | Shash_table_rehash_threshold, 1, 1, 0, | |
e9d8ddc9 | 4541 | doc: /* Return the current rehash threshold of TABLE. */) |
5842a27b | 4542 | (Lisp_Object table) |
d80c6c11 GM |
4543 | { |
4544 | return check_hash_table (table)->rehash_threshold; | |
4545 | } | |
59f953a2 | 4546 | |
d80c6c11 GM |
4547 | |
4548 | DEFUN ("hash-table-size", Fhash_table_size, Shash_table_size, 1, 1, 0, | |
e9d8ddc9 | 4549 | doc: /* Return the size of TABLE. |
47cebab1 | 4550 | The size can be used as an argument to `make-hash-table' to create |
b756c005 | 4551 | a hash table than can hold as many elements as TABLE holds |
e9d8ddc9 | 4552 | without need for resizing. */) |
5842a27b | 4553 | (Lisp_Object table) |
d80c6c11 GM |
4554 | { |
4555 | struct Lisp_Hash_Table *h = check_hash_table (table); | |
4556 | return make_number (HASH_TABLE_SIZE (h)); | |
4557 | } | |
59f953a2 | 4558 | |
d80c6c11 GM |
4559 | |
4560 | DEFUN ("hash-table-test", Fhash_table_test, Shash_table_test, 1, 1, 0, | |
e9d8ddc9 | 4561 | doc: /* Return the test TABLE uses. */) |
5842a27b | 4562 | (Lisp_Object table) |
d80c6c11 GM |
4563 | { |
4564 | return check_hash_table (table)->test; | |
4565 | } | |
4566 | ||
59f953a2 | 4567 | |
e84b1dea GM |
4568 | DEFUN ("hash-table-weakness", Fhash_table_weakness, Shash_table_weakness, |
4569 | 1, 1, 0, | |
e9d8ddc9 | 4570 | doc: /* Return the weakness of TABLE. */) |
5842a27b | 4571 | (Lisp_Object table) |
d80c6c11 GM |
4572 | { |
4573 | return check_hash_table (table)->weak; | |
4574 | } | |
4575 | ||
59f953a2 | 4576 | |
d80c6c11 | 4577 | DEFUN ("hash-table-p", Fhash_table_p, Shash_table_p, 1, 1, 0, |
e9d8ddc9 | 4578 | doc: /* Return t if OBJ is a Lisp hash table object. */) |
5842a27b | 4579 | (Lisp_Object obj) |
d80c6c11 GM |
4580 | { |
4581 | return HASH_TABLE_P (obj) ? Qt : Qnil; | |
4582 | } | |
4583 | ||
4584 | ||
4585 | DEFUN ("clrhash", Fclrhash, Sclrhash, 1, 1, 0, | |
ccd8f7fe | 4586 | doc: /* Clear hash table TABLE and return it. */) |
5842a27b | 4587 | (Lisp_Object table) |
d80c6c11 GM |
4588 | { |
4589 | hash_clear (check_hash_table (table)); | |
ccd8f7fe TTN |
4590 | /* Be compatible with XEmacs. */ |
4591 | return table; | |
d80c6c11 GM |
4592 | } |
4593 | ||
4594 | ||
4595 | DEFUN ("gethash", Fgethash, Sgethash, 2, 3, 0, | |
e9d8ddc9 MB |
4596 | doc: /* Look up KEY in TABLE and return its associated value. |
4597 | If KEY is not found, return DFLT which defaults to nil. */) | |
5842a27b | 4598 | (Lisp_Object key, Lisp_Object table, Lisp_Object dflt) |
d80c6c11 GM |
4599 | { |
4600 | struct Lisp_Hash_Table *h = check_hash_table (table); | |
4601 | int i = hash_lookup (h, key, NULL); | |
4602 | return i >= 0 ? HASH_VALUE (h, i) : dflt; | |
4603 | } | |
4604 | ||
4605 | ||
4606 | DEFUN ("puthash", Fputhash, Sputhash, 3, 3, 0, | |
e9d8ddc9 | 4607 | doc: /* Associate KEY with VALUE in hash table TABLE. |
47cebab1 | 4608 | If KEY is already present in table, replace its current value with |
e9d8ddc9 | 4609 | VALUE. */) |
5842a27b | 4610 | (Lisp_Object key, Lisp_Object value, Lisp_Object table) |
d80c6c11 GM |
4611 | { |
4612 | struct Lisp_Hash_Table *h = check_hash_table (table); | |
4613 | int i; | |
4614 | unsigned hash; | |
4615 | ||
4616 | i = hash_lookup (h, key, &hash); | |
4617 | if (i >= 0) | |
4618 | HASH_VALUE (h, i) = value; | |
4619 | else | |
4620 | hash_put (h, key, value, hash); | |
59f953a2 | 4621 | |
d9c4f922 | 4622 | return value; |
d80c6c11 GM |
4623 | } |
4624 | ||
4625 | ||
4626 | DEFUN ("remhash", Fremhash, Sremhash, 2, 2, 0, | |
e9d8ddc9 | 4627 | doc: /* Remove KEY from TABLE. */) |
5842a27b | 4628 | (Lisp_Object key, Lisp_Object table) |
d80c6c11 GM |
4629 | { |
4630 | struct Lisp_Hash_Table *h = check_hash_table (table); | |
5a2d7ab6 | 4631 | hash_remove_from_table (h, key); |
d80c6c11 GM |
4632 | return Qnil; |
4633 | } | |
4634 | ||
4635 | ||
4636 | DEFUN ("maphash", Fmaphash, Smaphash, 2, 2, 0, | |
e9d8ddc9 | 4637 | doc: /* Call FUNCTION for all entries in hash table TABLE. |
c14ec135 | 4638 | FUNCTION is called with two arguments, KEY and VALUE. */) |
5842a27b | 4639 | (Lisp_Object function, Lisp_Object table) |
d80c6c11 GM |
4640 | { |
4641 | struct Lisp_Hash_Table *h = check_hash_table (table); | |
4642 | Lisp_Object args[3]; | |
4643 | int i; | |
4644 | ||
4645 | for (i = 0; i < HASH_TABLE_SIZE (h); ++i) | |
4646 | if (!NILP (HASH_HASH (h, i))) | |
4647 | { | |
4648 | args[0] = function; | |
4649 | args[1] = HASH_KEY (h, i); | |
4650 | args[2] = HASH_VALUE (h, i); | |
4651 | Ffuncall (3, args); | |
4652 | } | |
59f953a2 | 4653 | |
d80c6c11 GM |
4654 | return Qnil; |
4655 | } | |
4656 | ||
4657 | ||
4658 | DEFUN ("define-hash-table-test", Fdefine_hash_table_test, | |
4659 | Sdefine_hash_table_test, 3, 3, 0, | |
e9d8ddc9 | 4660 | doc: /* Define a new hash table test with name NAME, a symbol. |
91f78c99 | 4661 | |
47cebab1 GM |
4662 | In hash tables created with NAME specified as test, use TEST to |
4663 | compare keys, and HASH for computing hash codes of keys. | |
4664 | ||
4665 | TEST must be a function taking two arguments and returning non-nil if | |
4666 | both arguments are the same. HASH must be a function taking one | |
4667 | argument and return an integer that is the hash code of the argument. | |
4668 | Hash code computation should use the whole value range of integers, | |
e9d8ddc9 | 4669 | including negative integers. */) |
5842a27b | 4670 | (Lisp_Object name, Lisp_Object test, Lisp_Object hash) |
d80c6c11 GM |
4671 | { |
4672 | return Fput (name, Qhash_table_test, list2 (test, hash)); | |
4673 | } | |
4674 | ||
a3b210c4 | 4675 | |
57916a7a | 4676 | \f |
5c302da4 GM |
4677 | /************************************************************************ |
4678 | MD5 | |
4679 | ************************************************************************/ | |
4680 | ||
57916a7a GM |
4681 | #include "md5.h" |
4682 | ||
4683 | DEFUN ("md5", Fmd5, Smd5, 1, 5, 0, | |
e9d8ddc9 | 4684 | doc: /* Return MD5 message digest of OBJECT, a buffer or string. |
91f78c99 | 4685 | |
47cebab1 GM |
4686 | A message digest is a cryptographic checksum of a document, and the |
4687 | algorithm to calculate it is defined in RFC 1321. | |
4688 | ||
4689 | The two optional arguments START and END are character positions | |
4690 | specifying for which part of OBJECT the message digest should be | |
4691 | computed. If nil or omitted, the digest is computed for the whole | |
4692 | OBJECT. | |
4693 | ||
4694 | The MD5 message digest is computed from the result of encoding the | |
4695 | text in a coding system, not directly from the internal Emacs form of | |
4696 | the text. The optional fourth argument CODING-SYSTEM specifies which | |
4697 | coding system to encode the text with. It should be the same coding | |
4698 | system that you used or will use when actually writing the text into a | |
4699 | file. | |
4700 | ||
4701 | If CODING-SYSTEM is nil or omitted, the default depends on OBJECT. If | |
4702 | OBJECT is a buffer, the default for CODING-SYSTEM is whatever coding | |
4703 | system would be chosen by default for writing this text into a file. | |
4704 | ||
4705 | If OBJECT is a string, the most preferred coding system (see the | |
4706 | command `prefer-coding-system') is used. | |
4707 | ||
4708 | If NOERROR is non-nil, silently assume the `raw-text' coding if the | |
e9d8ddc9 | 4709 | guesswork fails. Normally, an error is signaled in such case. */) |
5842a27b | 4710 | (Lisp_Object object, Lisp_Object start, Lisp_Object end, Lisp_Object coding_system, Lisp_Object noerror) |
57916a7a GM |
4711 | { |
4712 | unsigned char digest[16]; | |
4713 | unsigned char value[33]; | |
4714 | int i; | |
4715 | int size; | |
4716 | int size_byte = 0; | |
4717 | int start_char = 0, end_char = 0; | |
4718 | int start_byte = 0, end_byte = 0; | |
4719 | register int b, e; | |
4720 | register struct buffer *bp; | |
4721 | int temp; | |
4722 | ||
5c302da4 | 4723 | if (STRINGP (object)) |
57916a7a GM |
4724 | { |
4725 | if (NILP (coding_system)) | |
4726 | { | |
5c302da4 | 4727 | /* Decide the coding-system to encode the data with. */ |
57916a7a | 4728 | |
5c302da4 GM |
4729 | if (STRING_MULTIBYTE (object)) |
4730 | /* use default, we can't guess correct value */ | |
38583a69 | 4731 | coding_system = preferred_coding_system (); |
91f78c99 | 4732 | else |
5c302da4 | 4733 | coding_system = Qraw_text; |
57916a7a | 4734 | } |
91f78c99 | 4735 | |
5c302da4 | 4736 | if (NILP (Fcoding_system_p (coding_system))) |
57916a7a | 4737 | { |
5c302da4 | 4738 | /* Invalid coding system. */ |
91f78c99 | 4739 | |
5c302da4 GM |
4740 | if (!NILP (noerror)) |
4741 | coding_system = Qraw_text; | |
4742 | else | |
692ae65c | 4743 | xsignal1 (Qcoding_system_error, coding_system); |
57916a7a GM |
4744 | } |
4745 | ||
5c302da4 | 4746 | if (STRING_MULTIBYTE (object)) |
38583a69 | 4747 | object = code_convert_string (object, coding_system, Qnil, 1, 0, 1); |
5c302da4 | 4748 | |
d5db4077 KR |
4749 | size = SCHARS (object); |
4750 | size_byte = SBYTES (object); | |
57916a7a GM |
4751 | |
4752 | if (!NILP (start)) | |
4753 | { | |
b7826503 | 4754 | CHECK_NUMBER (start); |
57916a7a GM |
4755 | |
4756 | start_char = XINT (start); | |
4757 | ||
4758 | if (start_char < 0) | |
4759 | start_char += size; | |
4760 | ||
4761 | start_byte = string_char_to_byte (object, start_char); | |
4762 | } | |
4763 | ||
4764 | if (NILP (end)) | |
4765 | { | |
4766 | end_char = size; | |
4767 | end_byte = size_byte; | |
4768 | } | |
4769 | else | |
4770 | { | |
b7826503 | 4771 | CHECK_NUMBER (end); |
91f78c99 | 4772 | |
57916a7a GM |
4773 | end_char = XINT (end); |
4774 | ||
4775 | if (end_char < 0) | |
4776 | end_char += size; | |
91f78c99 | 4777 | |
57916a7a GM |
4778 | end_byte = string_char_to_byte (object, end_char); |
4779 | } | |
91f78c99 | 4780 | |
57916a7a GM |
4781 | if (!(0 <= start_char && start_char <= end_char && end_char <= size)) |
4782 | args_out_of_range_3 (object, make_number (start_char), | |
4783 | make_number (end_char)); | |
4784 | } | |
4785 | else | |
4786 | { | |
6b61353c KH |
4787 | struct buffer *prev = current_buffer; |
4788 | ||
4789 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); | |
4790 | ||
b7826503 | 4791 | CHECK_BUFFER (object); |
57916a7a GM |
4792 | |
4793 | bp = XBUFFER (object); | |
6b61353c KH |
4794 | if (bp != current_buffer) |
4795 | set_buffer_internal (bp); | |
91f78c99 | 4796 | |
57916a7a | 4797 | if (NILP (start)) |
6b61353c | 4798 | b = BEGV; |
57916a7a GM |
4799 | else |
4800 | { | |
b7826503 | 4801 | CHECK_NUMBER_COERCE_MARKER (start); |
57916a7a GM |
4802 | b = XINT (start); |
4803 | } | |
4804 | ||
4805 | if (NILP (end)) | |
6b61353c | 4806 | e = ZV; |
57916a7a GM |
4807 | else |
4808 | { | |
b7826503 | 4809 | CHECK_NUMBER_COERCE_MARKER (end); |
57916a7a GM |
4810 | e = XINT (end); |
4811 | } | |
91f78c99 | 4812 | |
57916a7a GM |
4813 | if (b > e) |
4814 | temp = b, b = e, e = temp; | |
91f78c99 | 4815 | |
6b61353c | 4816 | if (!(BEGV <= b && e <= ZV)) |
57916a7a | 4817 | args_out_of_range (start, end); |
91f78c99 | 4818 | |
57916a7a GM |
4819 | if (NILP (coding_system)) |
4820 | { | |
91f78c99 | 4821 | /* Decide the coding-system to encode the data with. |
5c302da4 GM |
4822 | See fileio.c:Fwrite-region */ |
4823 | ||
4824 | if (!NILP (Vcoding_system_for_write)) | |
4825 | coding_system = Vcoding_system_for_write; | |
4826 | else | |
4827 | { | |
4828 | int force_raw_text = 0; | |
4829 | ||
4830 | coding_system = XBUFFER (object)->buffer_file_coding_system; | |
4831 | if (NILP (coding_system) | |
4832 | || NILP (Flocal_variable_p (Qbuffer_file_coding_system, Qnil))) | |
4833 | { | |
4834 | coding_system = Qnil; | |
4835 | if (NILP (current_buffer->enable_multibyte_characters)) | |
4836 | force_raw_text = 1; | |
4837 | } | |
4838 | ||
4839 | if (NILP (coding_system) && !NILP (Fbuffer_file_name(object))) | |
4840 | { | |
4841 | /* Check file-coding-system-alist. */ | |
4842 | Lisp_Object args[4], val; | |
91f78c99 | 4843 | |
5c302da4 GM |
4844 | args[0] = Qwrite_region; args[1] = start; args[2] = end; |
4845 | args[3] = Fbuffer_file_name(object); | |
4846 | val = Ffind_operation_coding_system (4, args); | |
4847 | if (CONSP (val) && !NILP (XCDR (val))) | |
4848 | coding_system = XCDR (val); | |
4849 | } | |
4850 | ||
4851 | if (NILP (coding_system) | |
4852 | && !NILP (XBUFFER (object)->buffer_file_coding_system)) | |
4853 | { | |
4854 | /* If we still have not decided a coding system, use the | |
4855 | default value of buffer-file-coding-system. */ | |
4856 | coding_system = XBUFFER (object)->buffer_file_coding_system; | |
4857 | } | |
4858 | ||
4859 | if (!force_raw_text | |
4860 | && !NILP (Ffboundp (Vselect_safe_coding_system_function))) | |
4861 | /* Confirm that VAL can surely encode the current region. */ | |
1e59646d | 4862 | coding_system = call4 (Vselect_safe_coding_system_function, |
70da6a76 | 4863 | make_number (b), make_number (e), |
1e59646d | 4864 | coding_system, Qnil); |
5c302da4 GM |
4865 | |
4866 | if (force_raw_text) | |
4867 | coding_system = Qraw_text; | |
4868 | } | |
4869 | ||
4870 | if (NILP (Fcoding_system_p (coding_system))) | |
57916a7a | 4871 | { |
5c302da4 GM |
4872 | /* Invalid coding system. */ |
4873 | ||
4874 | if (!NILP (noerror)) | |
4875 | coding_system = Qraw_text; | |
4876 | else | |
692ae65c | 4877 | xsignal1 (Qcoding_system_error, coding_system); |
57916a7a GM |
4878 | } |
4879 | } | |
4880 | ||
4881 | object = make_buffer_string (b, e, 0); | |
6b61353c KH |
4882 | if (prev != current_buffer) |
4883 | set_buffer_internal (prev); | |
4884 | /* Discard the unwind protect for recovering the current | |
4885 | buffer. */ | |
4886 | specpdl_ptr--; | |
57916a7a GM |
4887 | |
4888 | if (STRING_MULTIBYTE (object)) | |
8f924df7 | 4889 | object = code_convert_string (object, coding_system, Qnil, 1, 0, 0); |
57916a7a GM |
4890 | } |
4891 | ||
91f78c99 FP |
4892 | md5_buffer (SDATA (object) + start_byte, |
4893 | SBYTES (object) - (size_byte - end_byte), | |
57916a7a GM |
4894 | digest); |
4895 | ||
4896 | for (i = 0; i < 16; i++) | |
5c302da4 | 4897 | sprintf (&value[2 * i], "%02x", digest[i]); |
57916a7a GM |
4898 | value[32] = '\0'; |
4899 | ||
4900 | return make_string (value, 32); | |
4901 | } | |
4902 | ||
24c129e4 | 4903 | \f |
dfcf069d | 4904 | void |
971de7fb | 4905 | syms_of_fns (void) |
7b863bd5 | 4906 | { |
d80c6c11 | 4907 | /* Hash table stuff. */ |
d67b4f80 | 4908 | Qhash_table_p = intern_c_string ("hash-table-p"); |
d80c6c11 | 4909 | staticpro (&Qhash_table_p); |
d67b4f80 | 4910 | Qeq = intern_c_string ("eq"); |
d80c6c11 | 4911 | staticpro (&Qeq); |
d67b4f80 | 4912 | Qeql = intern_c_string ("eql"); |
d80c6c11 | 4913 | staticpro (&Qeql); |
d67b4f80 | 4914 | Qequal = intern_c_string ("equal"); |
d80c6c11 | 4915 | staticpro (&Qequal); |
d67b4f80 | 4916 | QCtest = intern_c_string (":test"); |
d80c6c11 | 4917 | staticpro (&QCtest); |
d67b4f80 | 4918 | QCsize = intern_c_string (":size"); |
d80c6c11 | 4919 | staticpro (&QCsize); |
d67b4f80 | 4920 | QCrehash_size = intern_c_string (":rehash-size"); |
d80c6c11 | 4921 | staticpro (&QCrehash_size); |
d67b4f80 | 4922 | QCrehash_threshold = intern_c_string (":rehash-threshold"); |
d80c6c11 | 4923 | staticpro (&QCrehash_threshold); |
d67b4f80 | 4924 | QCweakness = intern_c_string (":weakness"); |
ee0403b3 | 4925 | staticpro (&QCweakness); |
d67b4f80 | 4926 | Qkey = intern_c_string ("key"); |
f899c503 | 4927 | staticpro (&Qkey); |
d67b4f80 | 4928 | Qvalue = intern_c_string ("value"); |
f899c503 | 4929 | staticpro (&Qvalue); |
d67b4f80 | 4930 | Qhash_table_test = intern_c_string ("hash-table-test"); |
d80c6c11 | 4931 | staticpro (&Qhash_table_test); |
d67b4f80 | 4932 | Qkey_or_value = intern_c_string ("key-or-value"); |
ec504e6f | 4933 | staticpro (&Qkey_or_value); |
d67b4f80 | 4934 | Qkey_and_value = intern_c_string ("key-and-value"); |
ec504e6f | 4935 | staticpro (&Qkey_and_value); |
d80c6c11 GM |
4936 | |
4937 | defsubr (&Ssxhash); | |
4938 | defsubr (&Smake_hash_table); | |
f899c503 | 4939 | defsubr (&Scopy_hash_table); |
d80c6c11 GM |
4940 | defsubr (&Shash_table_count); |
4941 | defsubr (&Shash_table_rehash_size); | |
4942 | defsubr (&Shash_table_rehash_threshold); | |
4943 | defsubr (&Shash_table_size); | |
4944 | defsubr (&Shash_table_test); | |
e84b1dea | 4945 | defsubr (&Shash_table_weakness); |
d80c6c11 GM |
4946 | defsubr (&Shash_table_p); |
4947 | defsubr (&Sclrhash); | |
4948 | defsubr (&Sgethash); | |
4949 | defsubr (&Sputhash); | |
4950 | defsubr (&Sremhash); | |
4951 | defsubr (&Smaphash); | |
4952 | defsubr (&Sdefine_hash_table_test); | |
59f953a2 | 4953 | |
d67b4f80 | 4954 | Qstring_lessp = intern_c_string ("string-lessp"); |
7b863bd5 | 4955 | staticpro (&Qstring_lessp); |
d67b4f80 | 4956 | Qprovide = intern_c_string ("provide"); |
68732608 | 4957 | staticpro (&Qprovide); |
d67b4f80 | 4958 | Qrequire = intern_c_string ("require"); |
68732608 | 4959 | staticpro (&Qrequire); |
d67b4f80 | 4960 | Qyes_or_no_p_history = intern_c_string ("yes-or-no-p-history"); |
0ce830bc | 4961 | staticpro (&Qyes_or_no_p_history); |
d67b4f80 | 4962 | Qcursor_in_echo_area = intern_c_string ("cursor-in-echo-area"); |
eb4ffa4e | 4963 | staticpro (&Qcursor_in_echo_area); |
d67b4f80 | 4964 | Qwidget_type = intern_c_string ("widget-type"); |
b4f334f7 | 4965 | staticpro (&Qwidget_type); |
7b863bd5 | 4966 | |
09ab3c3b KH |
4967 | staticpro (&string_char_byte_cache_string); |
4968 | string_char_byte_cache_string = Qnil; | |
4969 | ||
1f79789d RS |
4970 | require_nesting_list = Qnil; |
4971 | staticpro (&require_nesting_list); | |
4972 | ||
52a9879b RS |
4973 | Fset (Qyes_or_no_p_history, Qnil); |
4974 | ||
e9d8ddc9 | 4975 | DEFVAR_LISP ("features", &Vfeatures, |
4774b68e | 4976 | doc: /* A list of symbols which are the features of the executing Emacs. |
47cebab1 | 4977 | Used by `featurep' and `require', and altered by `provide'. */); |
d67b4f80 DN |
4978 | Vfeatures = Fcons (intern_c_string ("emacs"), Qnil); |
4979 | Qsubfeatures = intern_c_string ("subfeatures"); | |
65550192 | 4980 | staticpro (&Qsubfeatures); |
7b863bd5 | 4981 | |
dec002ca | 4982 | #ifdef HAVE_LANGINFO_CODESET |
d67b4f80 | 4983 | Qcodeset = intern_c_string ("codeset"); |
dec002ca | 4984 | staticpro (&Qcodeset); |
d67b4f80 | 4985 | Qdays = intern_c_string ("days"); |
dec002ca | 4986 | staticpro (&Qdays); |
d67b4f80 | 4987 | Qmonths = intern_c_string ("months"); |
dec002ca | 4988 | staticpro (&Qmonths); |
d67b4f80 | 4989 | Qpaper = intern_c_string ("paper"); |
dec002ca DL |
4990 | staticpro (&Qpaper); |
4991 | #endif /* HAVE_LANGINFO_CODESET */ | |
4992 | ||
e9d8ddc9 MB |
4993 | DEFVAR_BOOL ("use-dialog-box", &use_dialog_box, |
4994 | doc: /* *Non-nil means mouse commands use dialog boxes to ask questions. | |
436fa78b | 4995 | This applies to `y-or-n-p' and `yes-or-no-p' questions asked by commands |
7e861e0d CY |
4996 | invoked by mouse clicks and mouse menu items. |
4997 | ||
4998 | On some platforms, file selection dialogs are also enabled if this is | |
4999 | non-nil. */); | |
bdd8d692 RS |
5000 | use_dialog_box = 1; |
5001 | ||
6b61353c KH |
5002 | DEFVAR_BOOL ("use-file-dialog", &use_file_dialog, |
5003 | doc: /* *Non-nil means mouse commands use a file dialog to ask for files. | |
1f1d0797 | 5004 | This applies to commands from menus and tool bar buttons even when |
2fd0161b CY |
5005 | they are initiated from the keyboard. If `use-dialog-box' is nil, |
5006 | that disables the use of a file dialog, regardless of the value of | |
5007 | this variable. */); | |
6b61353c KH |
5008 | use_file_dialog = 1; |
5009 | ||
7b863bd5 JB |
5010 | defsubr (&Sidentity); |
5011 | defsubr (&Srandom); | |
5012 | defsubr (&Slength); | |
5a30fab8 | 5013 | defsubr (&Ssafe_length); |
026f59ce | 5014 | defsubr (&Sstring_bytes); |
7b863bd5 | 5015 | defsubr (&Sstring_equal); |
0e1e9f8d | 5016 | defsubr (&Scompare_strings); |
7b863bd5 JB |
5017 | defsubr (&Sstring_lessp); |
5018 | defsubr (&Sappend); | |
5019 | defsubr (&Sconcat); | |
5020 | defsubr (&Svconcat); | |
5021 | defsubr (&Scopy_sequence); | |
09ab3c3b KH |
5022 | defsubr (&Sstring_make_multibyte); |
5023 | defsubr (&Sstring_make_unibyte); | |
6d475204 RS |
5024 | defsubr (&Sstring_as_multibyte); |
5025 | defsubr (&Sstring_as_unibyte); | |
2df18cdb | 5026 | defsubr (&Sstring_to_multibyte); |
b4480f16 | 5027 | defsubr (&Sstring_to_unibyte); |
7b863bd5 JB |
5028 | defsubr (&Scopy_alist); |
5029 | defsubr (&Ssubstring); | |
aebf4d42 | 5030 | defsubr (&Ssubstring_no_properties); |
7b863bd5 JB |
5031 | defsubr (&Snthcdr); |
5032 | defsubr (&Snth); | |
5033 | defsubr (&Selt); | |
5034 | defsubr (&Smember); | |
5035 | defsubr (&Smemq); | |
008ef0ef | 5036 | defsubr (&Smemql); |
7b863bd5 JB |
5037 | defsubr (&Sassq); |
5038 | defsubr (&Sassoc); | |
5039 | defsubr (&Srassq); | |
0fb5a19c | 5040 | defsubr (&Srassoc); |
7b863bd5 | 5041 | defsubr (&Sdelq); |
ca8dd546 | 5042 | defsubr (&Sdelete); |
7b863bd5 JB |
5043 | defsubr (&Snreverse); |
5044 | defsubr (&Sreverse); | |
5045 | defsubr (&Ssort); | |
be9d483d | 5046 | defsubr (&Splist_get); |
7b863bd5 | 5047 | defsubr (&Sget); |
be9d483d | 5048 | defsubr (&Splist_put); |
7b863bd5 | 5049 | defsubr (&Sput); |
aebf4d42 RS |
5050 | defsubr (&Slax_plist_get); |
5051 | defsubr (&Slax_plist_put); | |
95f8c3b9 | 5052 | defsubr (&Seql); |
7b863bd5 | 5053 | defsubr (&Sequal); |
6b61353c | 5054 | defsubr (&Sequal_including_properties); |
7b863bd5 | 5055 | defsubr (&Sfillarray); |
85cad579 | 5056 | defsubr (&Sclear_string); |
7b863bd5 JB |
5057 | defsubr (&Snconc); |
5058 | defsubr (&Smapcar); | |
5c6740c9 | 5059 | defsubr (&Smapc); |
7b863bd5 JB |
5060 | defsubr (&Smapconcat); |
5061 | defsubr (&Sy_or_n_p); | |
5062 | defsubr (&Syes_or_no_p); | |
5063 | defsubr (&Sload_average); | |
5064 | defsubr (&Sfeaturep); | |
5065 | defsubr (&Srequire); | |
5066 | defsubr (&Sprovide); | |
a5254817 | 5067 | defsubr (&Splist_member); |
b4f334f7 KH |
5068 | defsubr (&Swidget_put); |
5069 | defsubr (&Swidget_get); | |
5070 | defsubr (&Swidget_apply); | |
24c129e4 KH |
5071 | defsubr (&Sbase64_encode_region); |
5072 | defsubr (&Sbase64_decode_region); | |
5073 | defsubr (&Sbase64_encode_string); | |
5074 | defsubr (&Sbase64_decode_string); | |
57916a7a | 5075 | defsubr (&Smd5); |
d68beb2f | 5076 | defsubr (&Slocale_info); |
7b863bd5 | 5077 | } |
d80c6c11 GM |
5078 | |
5079 | ||
5080 | void | |
971de7fb | 5081 | init_fns (void) |
d80c6c11 | 5082 | { |
d80c6c11 | 5083 | } |
6b61353c KH |
5084 | |
5085 | /* arch-tag: 787f8219-5b74-46bd-8469-7e1cc475fa31 | |
5086 | (do not change this comment) */ |