Commit | Line | Data |
---|---|---|
7b863bd5 | 1 | /* Random utility Lisp functions. |
0c6ca44b | 2 | Copyright (C) 1985, 86, 87, 93, 94, 95, 97, 98, 1999 Free Software Foundation, Inc. |
7b863bd5 JB |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
4ff1aed9 | 8 | the Free Software Foundation; either version 2, or (at your option) |
7b863bd5 JB |
9 | any later version. |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
3b7ad313 EN |
18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
19 | Boston, MA 02111-1307, USA. */ | |
7b863bd5 JB |
20 | |
21 | ||
18160b98 | 22 | #include <config.h> |
7b863bd5 | 23 | |
dfcf069d AS |
24 | #ifdef HAVE_UNISTD_H |
25 | #include <unistd.h> | |
26 | #endif | |
58edb572 | 27 | #include <time.h> |
dfcf069d | 28 | |
7b863bd5 JB |
29 | /* Note on some machines this defines `vector' as a typedef, |
30 | so make sure we don't use that name in this file. */ | |
31 | #undef vector | |
32 | #define vector ***** | |
33 | ||
7b863bd5 JB |
34 | #include "lisp.h" |
35 | #include "commands.h" | |
a8283a4a | 36 | #include "charset.h" |
7b863bd5 | 37 | |
7b863bd5 | 38 | #include "buffer.h" |
f812877e | 39 | #include "keyboard.h" |
ac811a55 | 40 | #include "intervals.h" |
2d8e7e1f RS |
41 | #include "frame.h" |
42 | #include "window.h" | |
d73c6532 | 43 | #if defined (HAVE_MENUS) && defined (HAVE_X_WINDOWS) |
dfcf069d AS |
44 | #include "xterm.h" |
45 | #endif | |
7b863bd5 | 46 | |
bc937db7 KH |
47 | #ifndef NULL |
48 | #define NULL (void *)0 | |
49 | #endif | |
50 | ||
d80c6c11 GM |
51 | #ifndef min |
52 | #define min(a, b) ((a) < (b) ? (a) : (b)) | |
53 | #define max(a, b) ((a) > (b) ? (a) : (b)) | |
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 | ||
2d8e7e1f RS |
60 | extern int minibuffer_auto_raise; |
61 | extern Lisp_Object minibuf_window; | |
62 | ||
68732608 | 63 | Lisp_Object Qstring_lessp, Qprovide, Qrequire; |
0ce830bc | 64 | Lisp_Object Qyes_or_no_p_history; |
eb4ffa4e | 65 | Lisp_Object Qcursor_in_echo_area; |
b4f334f7 | 66 | Lisp_Object Qwidget_type; |
7b863bd5 | 67 | |
3844ee44 RS |
68 | extern Lisp_Object Qinput_method_function; |
69 | ||
6cb9cafb | 70 | static int internal_equal (); |
49bdcd3e RS |
71 | |
72 | extern long get_random (); | |
73 | extern void seed_random (); | |
74 | ||
75 | #ifndef HAVE_UNISTD_H | |
76 | extern long time (); | |
77 | #endif | |
e0f5cf5a | 78 | \f |
7b863bd5 JB |
79 | DEFUN ("identity", Fidentity, Sidentity, 1, 1, 0, |
80 | "Return the argument unchanged.") | |
81 | (arg) | |
82 | Lisp_Object arg; | |
83 | { | |
84 | return arg; | |
85 | } | |
86 | ||
87 | DEFUN ("random", Frandom, Srandom, 0, 1, 0, | |
88 | "Return a pseudo-random number.\n\ | |
4cab5074 KH |
89 | All integers representable in Lisp are equally likely.\n\ |
90 | On most systems, this is 28 bits' worth.\n\ | |
99175c23 | 91 | With positive integer argument N, return random number in interval [0,N).\n\ |
7b863bd5 | 92 | With argument t, set the random number seed from the current time and pid.") |
88fe8140 EN |
93 | (n) |
94 | Lisp_Object n; | |
7b863bd5 | 95 | { |
e2d6972a KH |
96 | EMACS_INT val; |
97 | Lisp_Object lispy_val; | |
78217ef1 | 98 | unsigned long denominator; |
7b863bd5 | 99 | |
88fe8140 | 100 | if (EQ (n, Qt)) |
e2d6972a | 101 | seed_random (getpid () + time (NULL)); |
88fe8140 | 102 | if (NATNUMP (n) && XFASTINT (n) != 0) |
7b863bd5 | 103 | { |
4cab5074 KH |
104 | /* Try to take our random number from the higher bits of VAL, |
105 | not the lower, since (says Gentzel) the low bits of `random' | |
106 | are less random than the higher ones. We do this by using the | |
107 | quotient rather than the remainder. At the high end of the RNG | |
88fe8140 | 108 | it's possible to get a quotient larger than n; discarding |
4cab5074 | 109 | these values eliminates the bias that would otherwise appear |
88fe8140 EN |
110 | when using a large n. */ |
111 | denominator = ((unsigned long)1 << VALBITS) / XFASTINT (n); | |
4cab5074 | 112 | do |
99175c23 | 113 | val = get_random () / denominator; |
88fe8140 | 114 | while (val >= XFASTINT (n)); |
7b863bd5 | 115 | } |
78217ef1 | 116 | else |
99175c23 | 117 | val = get_random (); |
e2d6972a KH |
118 | XSETINT (lispy_val, val); |
119 | return lispy_val; | |
7b863bd5 JB |
120 | } |
121 | \f | |
122 | /* Random data-structure functions */ | |
123 | ||
124 | DEFUN ("length", Flength, Slength, 1, 1, 0, | |
125 | "Return the length of vector, list or string SEQUENCE.\n\ | |
0c57d6fd RS |
126 | A byte-code function object is also allowed.\n\ |
127 | If the string contains multibyte characters, this is not the necessarily\n\ | |
96ced23c AS |
128 | the number of bytes in the string; it is the number of characters.\n\ |
129 | To get the number of bytes, use `string-bytes'") | |
88fe8140 EN |
130 | (sequence) |
131 | register Lisp_Object sequence; | |
7b863bd5 JB |
132 | { |
133 | register Lisp_Object tail, val; | |
134 | register int i; | |
135 | ||
136 | retry: | |
88fe8140 EN |
137 | if (STRINGP (sequence)) |
138 | XSETFASTINT (val, XSTRING (sequence)->size); | |
139 | else if (VECTORP (sequence)) | |
140 | XSETFASTINT (val, XVECTOR (sequence)->size); | |
141 | else if (CHAR_TABLE_P (sequence)) | |
33aa0881 KH |
142 | XSETFASTINT (val, (MIN_CHAR_COMPOSITION |
143 | + (CHAR_FIELD2_MASK | CHAR_FIELD3_MASK) | |
144 | - 1)); | |
88fe8140 EN |
145 | else if (BOOL_VECTOR_P (sequence)) |
146 | XSETFASTINT (val, XBOOL_VECTOR (sequence)->size); | |
147 | else if (COMPILEDP (sequence)) | |
148 | XSETFASTINT (val, XVECTOR (sequence)->size & PSEUDOVECTOR_SIZE_MASK); | |
149 | else if (CONSP (sequence)) | |
7b863bd5 | 150 | { |
88fe8140 | 151 | for (i = 0, tail = sequence; !NILP (tail); i++) |
7b863bd5 JB |
152 | { |
153 | QUIT; | |
154 | tail = Fcdr (tail); | |
155 | } | |
156 | ||
ad17573a | 157 | XSETFASTINT (val, i); |
7b863bd5 | 158 | } |
88fe8140 | 159 | else if (NILP (sequence)) |
a2ad3e19 | 160 | XSETFASTINT (val, 0); |
7b863bd5 JB |
161 | else |
162 | { | |
88fe8140 | 163 | sequence = wrong_type_argument (Qsequencep, sequence); |
7b863bd5 JB |
164 | goto retry; |
165 | } | |
a2ad3e19 | 166 | return val; |
7b863bd5 JB |
167 | } |
168 | ||
5a30fab8 RS |
169 | /* This does not check for quits. That is safe |
170 | since it must terminate. */ | |
171 | ||
172 | DEFUN ("safe-length", Fsafe_length, Ssafe_length, 1, 1, 0, | |
173 | "Return the length of a list, but avoid error or infinite loop.\n\ | |
174 | This function never gets an error. If LIST is not really a list,\n\ | |
175 | it returns 0. If LIST is circular, it returns a finite value\n\ | |
176 | which is at least the number of distinct elements.") | |
b4f334f7 | 177 | (list) |
5a30fab8 RS |
178 | Lisp_Object list; |
179 | { | |
180 | Lisp_Object tail, halftail, length; | |
181 | int len = 0; | |
182 | ||
183 | /* halftail is used to detect circular lists. */ | |
184 | halftail = list; | |
70949dac | 185 | for (tail = list; CONSP (tail); tail = XCDR (tail)) |
5a30fab8 RS |
186 | { |
187 | if (EQ (tail, halftail) && len != 0) | |
cb3d1a0a | 188 | break; |
5a30fab8 | 189 | len++; |
3a61aeb4 | 190 | if ((len & 1) == 0) |
70949dac | 191 | halftail = XCDR (halftail); |
5a30fab8 RS |
192 | } |
193 | ||
194 | XSETINT (length, len); | |
195 | return length; | |
196 | } | |
197 | ||
026f59ce RS |
198 | DEFUN ("string-bytes", Fstring_bytes, Sstring_bytes, 1, 1, 0, |
199 | "Return the number of bytes in STRING.\n\ | |
200 | If STRING is a multibyte string, this is greater than the length of STRING.") | |
201 | (string) | |
eaf17c6b | 202 | Lisp_Object string; |
026f59ce RS |
203 | { |
204 | CHECK_STRING (string, 1); | |
fc932ac6 | 205 | return make_number (STRING_BYTES (XSTRING (string))); |
026f59ce RS |
206 | } |
207 | ||
7b863bd5 | 208 | DEFUN ("string-equal", Fstring_equal, Sstring_equal, 2, 2, 0, |
ea35ce3d | 209 | "Return t if two strings have identical contents.\n\ |
76d0f732 | 210 | Case is significant, but text properties are ignored.\n\ |
7b863bd5 JB |
211 | Symbols are also allowed; their print names are used instead.") |
212 | (s1, s2) | |
213 | register Lisp_Object s1, s2; | |
214 | { | |
7650760e | 215 | if (SYMBOLP (s1)) |
b2791413 | 216 | XSETSTRING (s1, XSYMBOL (s1)->name); |
7650760e | 217 | if (SYMBOLP (s2)) |
b2791413 | 218 | XSETSTRING (s2, XSYMBOL (s2)->name); |
7b863bd5 JB |
219 | CHECK_STRING (s1, 0); |
220 | CHECK_STRING (s2, 1); | |
221 | ||
ea35ce3d | 222 | if (XSTRING (s1)->size != XSTRING (s2)->size |
fc932ac6 RS |
223 | || STRING_BYTES (XSTRING (s1)) != STRING_BYTES (XSTRING (s2)) |
224 | || bcmp (XSTRING (s1)->data, XSTRING (s2)->data, STRING_BYTES (XSTRING (s1)))) | |
7b863bd5 JB |
225 | return Qnil; |
226 | return Qt; | |
227 | } | |
228 | ||
0e1e9f8d | 229 | DEFUN ("compare-strings", Fcompare_strings, |
f95837d0 | 230 | Scompare_strings, 6, 7, 0, |
0e1e9f8d RS |
231 | "Compare the contents of two strings, converting to multibyte if needed.\n\ |
232 | In string STR1, skip the first START1 characters and stop at END1.\n\ | |
233 | In string STR2, skip the first START2 characters and stop at END2.\n\ | |
d68cc14c RS |
234 | END1 and END2 default to the full lengths of the respective strings.\n\ |
235 | \n\ | |
0e1e9f8d RS |
236 | Case is significant in this comparison if IGNORE-CASE is nil.\n\ |
237 | Unibyte strings are converted to multibyte for comparison.\n\ | |
238 | \n\ | |
239 | The value is t if the strings (or specified portions) match.\n\ | |
240 | If string STR1 is less, the value is a negative number N;\n\ | |
241 | - 1 - N is the number of characters that match at the beginning.\n\ | |
242 | If string STR1 is greater, the value is a positive number N;\n\ | |
243 | N - 1 is the number of characters that match at the beginning.") | |
244 | (str1, start1, end1, str2, start2, end2, ignore_case) | |
245 | Lisp_Object str1, start1, end1, start2, str2, end2, ignore_case; | |
246 | { | |
247 | register int end1_char, end2_char; | |
248 | register int i1, i1_byte, i2, i2_byte; | |
249 | ||
250 | CHECK_STRING (str1, 0); | |
251 | CHECK_STRING (str2, 1); | |
252 | if (NILP (start1)) | |
253 | start1 = make_number (0); | |
254 | if (NILP (start2)) | |
255 | start2 = make_number (0); | |
256 | CHECK_NATNUM (start1, 2); | |
257 | CHECK_NATNUM (start2, 3); | |
258 | if (! NILP (end1)) | |
259 | CHECK_NATNUM (end1, 4); | |
260 | if (! NILP (end2)) | |
261 | CHECK_NATNUM (end2, 4); | |
262 | ||
263 | i1 = XINT (start1); | |
264 | i2 = XINT (start2); | |
265 | ||
266 | i1_byte = string_char_to_byte (str1, i1); | |
267 | i2_byte = string_char_to_byte (str2, i2); | |
268 | ||
269 | end1_char = XSTRING (str1)->size; | |
270 | if (! NILP (end1) && end1_char > XINT (end1)) | |
271 | end1_char = XINT (end1); | |
272 | ||
273 | end2_char = XSTRING (str2)->size; | |
274 | if (! NILP (end2) && end2_char > XINT (end2)) | |
275 | end2_char = XINT (end2); | |
276 | ||
277 | while (i1 < end1_char && i2 < end2_char) | |
278 | { | |
279 | /* When we find a mismatch, we must compare the | |
280 | characters, not just the bytes. */ | |
281 | int c1, c2; | |
282 | ||
283 | if (STRING_MULTIBYTE (str1)) | |
284 | FETCH_STRING_CHAR_ADVANCE (c1, str1, i1, i1_byte); | |
285 | else | |
286 | { | |
287 | c1 = XSTRING (str1)->data[i1++]; | |
288 | c1 = unibyte_char_to_multibyte (c1); | |
289 | } | |
290 | ||
291 | if (STRING_MULTIBYTE (str2)) | |
292 | FETCH_STRING_CHAR_ADVANCE (c2, str2, i2, i2_byte); | |
293 | else | |
294 | { | |
295 | c2 = XSTRING (str2)->data[i2++]; | |
296 | c2 = unibyte_char_to_multibyte (c2); | |
297 | } | |
298 | ||
299 | if (c1 == c2) | |
300 | continue; | |
301 | ||
302 | if (! NILP (ignore_case)) | |
303 | { | |
304 | Lisp_Object tem; | |
305 | ||
306 | tem = Fupcase (make_number (c1)); | |
307 | c1 = XINT (tem); | |
308 | tem = Fupcase (make_number (c2)); | |
309 | c2 = XINT (tem); | |
310 | } | |
311 | ||
312 | if (c1 == c2) | |
313 | continue; | |
314 | ||
315 | /* Note that I1 has already been incremented | |
316 | past the character that we are comparing; | |
317 | hence we don't add or subtract 1 here. */ | |
318 | if (c1 < c2) | |
319 | return make_number (- i1); | |
320 | else | |
321 | return make_number (i1); | |
322 | } | |
323 | ||
324 | if (i1 < end1_char) | |
325 | return make_number (i1 - XINT (start1) + 1); | |
326 | if (i2 < end2_char) | |
327 | return make_number (- i1 + XINT (start1) - 1); | |
328 | ||
329 | return Qt; | |
330 | } | |
331 | ||
7b863bd5 | 332 | DEFUN ("string-lessp", Fstring_lessp, Sstring_lessp, 2, 2, 0, |
ea35ce3d | 333 | "Return t if first arg string is less than second in lexicographic order.\n\ |
7b863bd5 JB |
334 | Case is significant.\n\ |
335 | Symbols are also allowed; their print names are used instead.") | |
336 | (s1, s2) | |
337 | register Lisp_Object s1, s2; | |
338 | { | |
7b863bd5 | 339 | register int end; |
09ab3c3b | 340 | register int i1, i1_byte, i2, i2_byte; |
7b863bd5 | 341 | |
7650760e | 342 | if (SYMBOLP (s1)) |
b2791413 | 343 | XSETSTRING (s1, XSYMBOL (s1)->name); |
7650760e | 344 | if (SYMBOLP (s2)) |
b2791413 | 345 | XSETSTRING (s2, XSYMBOL (s2)->name); |
7b863bd5 JB |
346 | CHECK_STRING (s1, 0); |
347 | CHECK_STRING (s2, 1); | |
348 | ||
09ab3c3b KH |
349 | i1 = i1_byte = i2 = i2_byte = 0; |
350 | ||
351 | end = XSTRING (s1)->size; | |
352 | if (end > XSTRING (s2)->size) | |
353 | end = XSTRING (s2)->size; | |
7b863bd5 | 354 | |
09ab3c3b | 355 | while (i1 < end) |
7b863bd5 | 356 | { |
09ab3c3b KH |
357 | /* When we find a mismatch, we must compare the |
358 | characters, not just the bytes. */ | |
359 | int c1, c2; | |
360 | ||
361 | if (STRING_MULTIBYTE (s1)) | |
362 | FETCH_STRING_CHAR_ADVANCE (c1, s1, i1, i1_byte); | |
363 | else | |
364 | c1 = XSTRING (s1)->data[i1++]; | |
365 | ||
366 | if (STRING_MULTIBYTE (s2)) | |
367 | FETCH_STRING_CHAR_ADVANCE (c2, s2, i2, i2_byte); | |
368 | else | |
369 | c2 = XSTRING (s2)->data[i2++]; | |
370 | ||
371 | if (c1 != c2) | |
372 | return c1 < c2 ? Qt : Qnil; | |
7b863bd5 | 373 | } |
09ab3c3b | 374 | return i1 < XSTRING (s2)->size ? Qt : Qnil; |
7b863bd5 JB |
375 | } |
376 | \f | |
377 | static Lisp_Object concat (); | |
378 | ||
379 | /* ARGSUSED */ | |
380 | Lisp_Object | |
381 | concat2 (s1, s2) | |
382 | Lisp_Object s1, s2; | |
383 | { | |
384 | #ifdef NO_ARG_ARRAY | |
385 | Lisp_Object args[2]; | |
386 | args[0] = s1; | |
387 | args[1] = s2; | |
388 | return concat (2, args, Lisp_String, 0); | |
389 | #else | |
390 | return concat (2, &s1, Lisp_String, 0); | |
391 | #endif /* NO_ARG_ARRAY */ | |
392 | } | |
393 | ||
d4af3687 RS |
394 | /* ARGSUSED */ |
395 | Lisp_Object | |
396 | concat3 (s1, s2, s3) | |
397 | Lisp_Object s1, s2, s3; | |
398 | { | |
399 | #ifdef NO_ARG_ARRAY | |
400 | Lisp_Object args[3]; | |
401 | args[0] = s1; | |
402 | args[1] = s2; | |
403 | args[2] = s3; | |
404 | return concat (3, args, Lisp_String, 0); | |
405 | #else | |
406 | return concat (3, &s1, Lisp_String, 0); | |
407 | #endif /* NO_ARG_ARRAY */ | |
408 | } | |
409 | ||
7b863bd5 JB |
410 | DEFUN ("append", Fappend, Sappend, 0, MANY, 0, |
411 | "Concatenate all the arguments and make the result a list.\n\ | |
412 | The result is a list whose elements are the elements of all the arguments.\n\ | |
413 | Each argument may be a list, vector or string.\n\ | |
aec1184c | 414 | The last argument is not copied, just used as the tail of the new list.") |
7b863bd5 JB |
415 | (nargs, args) |
416 | int nargs; | |
417 | Lisp_Object *args; | |
418 | { | |
419 | return concat (nargs, args, Lisp_Cons, 1); | |
420 | } | |
421 | ||
422 | DEFUN ("concat", Fconcat, Sconcat, 0, MANY, 0, | |
423 | "Concatenate all the arguments and make the result a string.\n\ | |
424 | The result is a string whose elements are the elements of all the arguments.\n\ | |
37d40ae9 RS |
425 | Each argument may be a string or a list or vector of characters (integers).\n\ |
426 | \n\ | |
427 | Do not use individual integers as arguments!\n\ | |
428 | The behavior of `concat' in that case will be changed later!\n\ | |
429 | If your program passes an integer as an argument to `concat',\n\ | |
430 | you should change it right away not to do so.") | |
7b863bd5 JB |
431 | (nargs, args) |
432 | int nargs; | |
433 | Lisp_Object *args; | |
434 | { | |
435 | return concat (nargs, args, Lisp_String, 0); | |
436 | } | |
437 | ||
438 | DEFUN ("vconcat", Fvconcat, Svconcat, 0, MANY, 0, | |
439 | "Concatenate all the arguments and make the result a vector.\n\ | |
440 | The result is a vector whose elements are the elements of all the arguments.\n\ | |
441 | Each argument may be a list, vector or string.") | |
442 | (nargs, args) | |
443 | int nargs; | |
444 | Lisp_Object *args; | |
445 | { | |
3e7383eb | 446 | return concat (nargs, args, Lisp_Vectorlike, 0); |
7b863bd5 JB |
447 | } |
448 | ||
3720677d KH |
449 | /* Retrun a copy of a sub char table ARG. The elements except for a |
450 | nested sub char table are not copied. */ | |
451 | static Lisp_Object | |
452 | copy_sub_char_table (arg) | |
e1335ba2 | 453 | Lisp_Object arg; |
3720677d KH |
454 | { |
455 | Lisp_Object copy = make_sub_char_table (XCHAR_TABLE (arg)->defalt); | |
456 | int i; | |
457 | ||
458 | /* Copy all the contents. */ | |
459 | bcopy (XCHAR_TABLE (arg)->contents, XCHAR_TABLE (copy)->contents, | |
460 | SUB_CHAR_TABLE_ORDINARY_SLOTS * sizeof (Lisp_Object)); | |
461 | /* Recursively copy any sub char-tables in the ordinary slots. */ | |
462 | for (i = 32; i < SUB_CHAR_TABLE_ORDINARY_SLOTS; i++) | |
463 | if (SUB_CHAR_TABLE_P (XCHAR_TABLE (arg)->contents[i])) | |
464 | XCHAR_TABLE (copy)->contents[i] | |
465 | = copy_sub_char_table (XCHAR_TABLE (copy)->contents[i]); | |
466 | ||
467 | return copy; | |
468 | } | |
469 | ||
470 | ||
7b863bd5 JB |
471 | DEFUN ("copy-sequence", Fcopy_sequence, Scopy_sequence, 1, 1, 0, |
472 | "Return a copy of a list, vector or string.\n\ | |
473 | The elements of a list or vector are not copied; they are shared\n\ | |
474 | with the original.") | |
475 | (arg) | |
476 | Lisp_Object arg; | |
477 | { | |
265a9e55 | 478 | if (NILP (arg)) return arg; |
e03f7933 RS |
479 | |
480 | if (CHAR_TABLE_P (arg)) | |
481 | { | |
25c30748 | 482 | int i; |
e03f7933 RS |
483 | Lisp_Object copy; |
484 | ||
c8640abf | 485 | copy = Fmake_char_table (XCHAR_TABLE (arg)->purpose, Qnil); |
e03f7933 | 486 | /* Copy all the slots, including the extra ones. */ |
69b3a14b | 487 | bcopy (XVECTOR (arg)->contents, XVECTOR (copy)->contents, |
25c30748 KH |
488 | ((XCHAR_TABLE (arg)->size & PSEUDOVECTOR_SIZE_MASK) |
489 | * sizeof (Lisp_Object))); | |
e03f7933 | 490 | |
3720677d KH |
491 | /* Recursively copy any sub char tables in the ordinary slots |
492 | for multibyte characters. */ | |
493 | for (i = CHAR_TABLE_SINGLE_BYTE_SLOTS; | |
494 | i < CHAR_TABLE_ORDINARY_SLOTS; i++) | |
495 | if (SUB_CHAR_TABLE_P (XCHAR_TABLE (arg)->contents[i])) | |
e03f7933 | 496 | XCHAR_TABLE (copy)->contents[i] |
3720677d | 497 | = copy_sub_char_table (XCHAR_TABLE (copy)->contents[i]); |
e03f7933 RS |
498 | |
499 | return copy; | |
500 | } | |
501 | ||
502 | if (BOOL_VECTOR_P (arg)) | |
503 | { | |
504 | Lisp_Object val; | |
e03f7933 | 505 | int size_in_chars |
e22e4283 | 506 | = (XBOOL_VECTOR (arg)->size + BITS_PER_CHAR - 1) / BITS_PER_CHAR; |
e03f7933 RS |
507 | |
508 | val = Fmake_bool_vector (Flength (arg), Qnil); | |
509 | bcopy (XBOOL_VECTOR (arg)->data, XBOOL_VECTOR (val)->data, | |
510 | size_in_chars); | |
511 | return val; | |
512 | } | |
513 | ||
7650760e | 514 | if (!CONSP (arg) && !VECTORP (arg) && !STRINGP (arg)) |
7b863bd5 JB |
515 | arg = wrong_type_argument (Qsequencep, arg); |
516 | return concat (1, &arg, CONSP (arg) ? Lisp_Cons : XTYPE (arg), 0); | |
517 | } | |
518 | ||
2d6115c8 KH |
519 | /* In string STR of length LEN, see if bytes before STR[I] combine |
520 | with bytes after STR[I] to form a single character. If so, return | |
521 | the number of bytes after STR[I] which combine in this way. | |
522 | Otherwize, return 0. */ | |
523 | ||
524 | static int | |
525 | count_combining (str, len, i) | |
526 | unsigned char *str; | |
527 | int len, i; | |
528 | { | |
e50d9192 | 529 | int j = i - 1, bytes; |
2d6115c8 KH |
530 | |
531 | if (i == 0 || i == len || CHAR_HEAD_P (str[i])) | |
532 | return 0; | |
533 | while (j >= 0 && !CHAR_HEAD_P (str[j])) j--; | |
534 | if (j < 0 || ! BASE_LEADING_CODE_P (str[j])) | |
535 | return 0; | |
e50d9192 KH |
536 | PARSE_MULTIBYTE_SEQ (str + j, len - j, bytes); |
537 | return (bytes <= i - j ? 0 : bytes - (i - j)); | |
2d6115c8 KH |
538 | } |
539 | ||
540 | /* This structure holds information of an argument of `concat' that is | |
541 | a string and has text properties to be copied. */ | |
87f0532f | 542 | struct textprop_rec |
2d6115c8 KH |
543 | { |
544 | int argnum; /* refer to ARGS (arguments of `concat') */ | |
545 | int from; /* refer to ARGS[argnum] (argument string) */ | |
546 | int to; /* refer to VAL (the target string) */ | |
547 | }; | |
548 | ||
7b863bd5 JB |
549 | static Lisp_Object |
550 | concat (nargs, args, target_type, last_special) | |
551 | int nargs; | |
552 | Lisp_Object *args; | |
553 | enum Lisp_Type target_type; | |
554 | int last_special; | |
555 | { | |
556 | Lisp_Object val; | |
7b863bd5 JB |
557 | register Lisp_Object tail; |
558 | register Lisp_Object this; | |
559 | int toindex; | |
ea35ce3d RS |
560 | int toindex_byte; |
561 | register int result_len; | |
562 | register int result_len_byte; | |
7b863bd5 JB |
563 | register int argnum; |
564 | Lisp_Object last_tail; | |
565 | Lisp_Object prev; | |
ea35ce3d | 566 | int some_multibyte; |
2d6115c8 KH |
567 | /* When we make a multibyte string, we can't copy text properties |
568 | while concatinating each string because the length of resulting | |
569 | string can't be decided until we finish the whole concatination. | |
570 | So, we record strings that have text properties to be copied | |
571 | here, and copy the text properties after the concatination. */ | |
87f0532f KH |
572 | struct textprop_rec *textprops; |
573 | /* Number of elments in textprops. */ | |
574 | int num_textprops = 0; | |
7b863bd5 JB |
575 | |
576 | /* In append, the last arg isn't treated like the others */ | |
577 | if (last_special && nargs > 0) | |
578 | { | |
579 | nargs--; | |
580 | last_tail = args[nargs]; | |
581 | } | |
582 | else | |
583 | last_tail = Qnil; | |
584 | ||
ea35ce3d | 585 | /* Canonicalize each argument. */ |
7b863bd5 JB |
586 | for (argnum = 0; argnum < nargs; argnum++) |
587 | { | |
588 | this = args[argnum]; | |
7650760e | 589 | if (!(CONSP (this) || NILP (this) || VECTORP (this) || STRINGP (this) |
e03f7933 | 590 | || COMPILEDP (this) || BOOL_VECTOR_P (this))) |
7b863bd5 | 591 | { |
7650760e | 592 | if (INTEGERP (this)) |
37d40ae9 | 593 | args[argnum] = Fnumber_to_string (this); |
7b863bd5 JB |
594 | else |
595 | args[argnum] = wrong_type_argument (Qsequencep, this); | |
596 | } | |
597 | } | |
598 | ||
ea35ce3d RS |
599 | /* Compute total length in chars of arguments in RESULT_LEN. |
600 | If desired output is a string, also compute length in bytes | |
601 | in RESULT_LEN_BYTE, and determine in SOME_MULTIBYTE | |
602 | whether the result should be a multibyte string. */ | |
603 | result_len_byte = 0; | |
604 | result_len = 0; | |
605 | some_multibyte = 0; | |
606 | for (argnum = 0; argnum < nargs; argnum++) | |
7b863bd5 | 607 | { |
ea35ce3d | 608 | int len; |
7b863bd5 | 609 | this = args[argnum]; |
ea35ce3d RS |
610 | len = XFASTINT (Flength (this)); |
611 | if (target_type == Lisp_String) | |
5b6dddaa | 612 | { |
09ab3c3b KH |
613 | /* We must count the number of bytes needed in the string |
614 | as well as the number of characters. */ | |
5b6dddaa KH |
615 | int i; |
616 | Lisp_Object ch; | |
ea35ce3d | 617 | int this_len_byte; |
5b6dddaa | 618 | |
dec58e65 | 619 | if (VECTORP (this)) |
ea35ce3d | 620 | for (i = 0; i < len; i++) |
dec58e65 KH |
621 | { |
622 | ch = XVECTOR (this)->contents[i]; | |
623 | if (! INTEGERP (ch)) | |
624 | wrong_type_argument (Qintegerp, ch); | |
cc531c44 | 625 | this_len_byte = CHAR_BYTES (XINT (ch)); |
ea35ce3d RS |
626 | result_len_byte += this_len_byte; |
627 | if (this_len_byte > 1) | |
628 | some_multibyte = 1; | |
dec58e65 | 629 | } |
6d475204 RS |
630 | else if (BOOL_VECTOR_P (this) && XBOOL_VECTOR (this)->size > 0) |
631 | wrong_type_argument (Qintegerp, Faref (this, make_number (0))); | |
ea35ce3d | 632 | else if (CONSP (this)) |
70949dac | 633 | for (; CONSP (this); this = XCDR (this)) |
dec58e65 | 634 | { |
70949dac | 635 | ch = XCAR (this); |
dec58e65 KH |
636 | if (! INTEGERP (ch)) |
637 | wrong_type_argument (Qintegerp, ch); | |
cc531c44 | 638 | this_len_byte = CHAR_BYTES (XINT (ch)); |
ea35ce3d RS |
639 | result_len_byte += this_len_byte; |
640 | if (this_len_byte > 1) | |
641 | some_multibyte = 1; | |
dec58e65 | 642 | } |
470730a8 | 643 | else if (STRINGP (this)) |
ea35ce3d | 644 | { |
06f57aa7 | 645 | if (STRING_MULTIBYTE (this)) |
09ab3c3b KH |
646 | { |
647 | some_multibyte = 1; | |
fc932ac6 | 648 | result_len_byte += STRING_BYTES (XSTRING (this)); |
09ab3c3b KH |
649 | } |
650 | else | |
651 | result_len_byte += count_size_as_multibyte (XSTRING (this)->data, | |
652 | XSTRING (this)->size); | |
ea35ce3d | 653 | } |
5b6dddaa | 654 | } |
ea35ce3d RS |
655 | |
656 | result_len += len; | |
7b863bd5 JB |
657 | } |
658 | ||
09ab3c3b KH |
659 | if (! some_multibyte) |
660 | result_len_byte = result_len; | |
7b863bd5 | 661 | |
ea35ce3d | 662 | /* Create the output object. */ |
7b863bd5 | 663 | if (target_type == Lisp_Cons) |
ea35ce3d | 664 | val = Fmake_list (make_number (result_len), Qnil); |
3e7383eb | 665 | else if (target_type == Lisp_Vectorlike) |
ea35ce3d | 666 | val = Fmake_vector (make_number (result_len), Qnil); |
b10b2daa | 667 | else if (some_multibyte) |
ea35ce3d | 668 | val = make_uninit_multibyte_string (result_len, result_len_byte); |
b10b2daa RS |
669 | else |
670 | val = make_uninit_string (result_len); | |
7b863bd5 | 671 | |
09ab3c3b KH |
672 | /* In `append', if all but last arg are nil, return last arg. */ |
673 | if (target_type == Lisp_Cons && EQ (val, Qnil)) | |
674 | return last_tail; | |
7b863bd5 | 675 | |
ea35ce3d | 676 | /* Copy the contents of the args into the result. */ |
7b863bd5 | 677 | if (CONSP (val)) |
2d6115c8 | 678 | tail = val, toindex = -1; /* -1 in toindex is flag we are making a list */ |
7b863bd5 | 679 | else |
ea35ce3d | 680 | toindex = 0, toindex_byte = 0; |
7b863bd5 JB |
681 | |
682 | prev = Qnil; | |
2d6115c8 | 683 | if (STRINGP (val)) |
87f0532f KH |
684 | textprops |
685 | = (struct textprop_rec *) alloca (sizeof (struct textprop_rec) * nargs); | |
7b863bd5 JB |
686 | |
687 | for (argnum = 0; argnum < nargs; argnum++) | |
688 | { | |
689 | Lisp_Object thislen; | |
690 | int thisleni; | |
de712da3 | 691 | register unsigned int thisindex = 0; |
ea35ce3d | 692 | register unsigned int thisindex_byte = 0; |
7b863bd5 JB |
693 | |
694 | this = args[argnum]; | |
695 | if (!CONSP (this)) | |
696 | thislen = Flength (this), thisleni = XINT (thislen); | |
697 | ||
ea35ce3d RS |
698 | /* Between strings of the same kind, copy fast. */ |
699 | if (STRINGP (this) && STRINGP (val) | |
700 | && STRING_MULTIBYTE (this) == some_multibyte) | |
7b863bd5 | 701 | { |
fc932ac6 | 702 | int thislen_byte = STRING_BYTES (XSTRING (this)); |
2d6115c8 KH |
703 | int combined; |
704 | ||
ea35ce3d | 705 | bcopy (XSTRING (this)->data, XSTRING (val)->data + toindex_byte, |
fc932ac6 | 706 | STRING_BYTES (XSTRING (this))); |
2d6115c8 KH |
707 | combined = (some_multibyte && toindex_byte > 0 |
708 | ? count_combining (XSTRING (val)->data, | |
709 | toindex_byte + thislen_byte, | |
710 | toindex_byte) | |
711 | : 0); | |
712 | if (! NULL_INTERVAL_P (XSTRING (this)->intervals)) | |
713 | { | |
87f0532f | 714 | textprops[num_textprops].argnum = argnum; |
2d6115c8 | 715 | /* We ignore text properties on characters being combined. */ |
87f0532f KH |
716 | textprops[num_textprops].from = combined; |
717 | textprops[num_textprops++].to = toindex; | |
2d6115c8 | 718 | } |
ea35ce3d | 719 | toindex_byte += thislen_byte; |
2d6115c8 KH |
720 | toindex += thisleni - combined; |
721 | XSTRING (val)->size -= combined; | |
ea35ce3d | 722 | } |
09ab3c3b KH |
723 | /* Copy a single-byte string to a multibyte string. */ |
724 | else if (STRINGP (this) && STRINGP (val)) | |
725 | { | |
2d6115c8 KH |
726 | if (! NULL_INTERVAL_P (XSTRING (this)->intervals)) |
727 | { | |
87f0532f KH |
728 | textprops[num_textprops].argnum = argnum; |
729 | textprops[num_textprops].from = 0; | |
730 | textprops[num_textprops++].to = toindex; | |
2d6115c8 | 731 | } |
09ab3c3b KH |
732 | toindex_byte += copy_text (XSTRING (this)->data, |
733 | XSTRING (val)->data + toindex_byte, | |
734 | XSTRING (this)->size, 0, 1); | |
735 | toindex += thisleni; | |
736 | } | |
ea35ce3d RS |
737 | else |
738 | /* Copy element by element. */ | |
739 | while (1) | |
740 | { | |
741 | register Lisp_Object elt; | |
742 | ||
743 | /* Fetch next element of `this' arg into `elt', or break if | |
744 | `this' is exhausted. */ | |
745 | if (NILP (this)) break; | |
746 | if (CONSP (this)) | |
70949dac | 747 | elt = XCAR (this), this = XCDR (this); |
6a7df83b RS |
748 | else if (thisindex >= thisleni) |
749 | break; | |
750 | else if (STRINGP (this)) | |
ea35ce3d | 751 | { |
2cef5737 | 752 | int c; |
6a7df83b | 753 | if (STRING_MULTIBYTE (this)) |
ea35ce3d | 754 | { |
6a7df83b RS |
755 | FETCH_STRING_CHAR_ADVANCE (c, this, |
756 | thisindex, | |
757 | thisindex_byte); | |
758 | XSETFASTINT (elt, c); | |
ea35ce3d | 759 | } |
6a7df83b | 760 | else |
ea35ce3d | 761 | { |
6a7df83b | 762 | XSETFASTINT (elt, XSTRING (this)->data[thisindex++]); |
e0e25273 KH |
763 | if (some_multibyte |
764 | && (XINT (elt) >= 0240 | |
f9638719 EZ |
765 | || (XINT (elt) >= 0200 |
766 | && ! NILP (Vnonascii_translation_table))) | |
6a7df83b RS |
767 | && XINT (elt) < 0400) |
768 | { | |
2cef5737 | 769 | c = unibyte_char_to_multibyte (XINT (elt)); |
6a7df83b RS |
770 | XSETINT (elt, c); |
771 | } | |
ea35ce3d | 772 | } |
6a7df83b RS |
773 | } |
774 | else if (BOOL_VECTOR_P (this)) | |
775 | { | |
776 | int byte; | |
777 | byte = XBOOL_VECTOR (this)->data[thisindex / BITS_PER_CHAR]; | |
778 | if (byte & (1 << (thisindex % BITS_PER_CHAR))) | |
779 | elt = Qt; | |
ea35ce3d | 780 | else |
6a7df83b RS |
781 | elt = Qnil; |
782 | thisindex++; | |
ea35ce3d | 783 | } |
6a7df83b RS |
784 | else |
785 | elt = XVECTOR (this)->contents[thisindex++]; | |
7b863bd5 | 786 | |
ea35ce3d RS |
787 | /* Store this element into the result. */ |
788 | if (toindex < 0) | |
7b863bd5 | 789 | { |
70949dac | 790 | XCAR (tail) = elt; |
ea35ce3d | 791 | prev = tail; |
70949dac | 792 | tail = XCDR (tail); |
7b863bd5 | 793 | } |
ea35ce3d RS |
794 | else if (VECTORP (val)) |
795 | XVECTOR (val)->contents[toindex++] = elt; | |
796 | else | |
797 | { | |
798 | CHECK_NUMBER (elt, 0); | |
799 | if (SINGLE_BYTE_CHAR_P (XINT (elt))) | |
800 | { | |
2d6115c8 | 801 | XSTRING (val)->data[toindex_byte++] = XINT (elt); |
18cc260b KH |
802 | if (some_multibyte |
803 | && toindex_byte > 0 | |
2d6115c8 KH |
804 | && count_combining (XSTRING (val)->data, |
805 | toindex_byte, toindex_byte - 1)) | |
806 | XSTRING (val)->size--; | |
807 | else | |
808 | toindex++; | |
ea35ce3d RS |
809 | } |
810 | else | |
811 | /* If we have any multibyte characters, | |
812 | we already decided to make a multibyte string. */ | |
813 | { | |
814 | int c = XINT (elt); | |
815 | unsigned char work[4], *str; | |
816 | int i = CHAR_STRING (c, work, str); | |
817 | ||
818 | /* P exists as a variable | |
819 | to avoid a bug on the Masscomp C compiler. */ | |
820 | unsigned char *p = & XSTRING (val)->data[toindex_byte]; | |
821 | bcopy (str, p, i); | |
822 | toindex_byte += i; | |
823 | toindex++; | |
824 | } | |
825 | } | |
826 | } | |
7b863bd5 | 827 | } |
265a9e55 | 828 | if (!NILP (prev)) |
70949dac | 829 | XCDR (prev) = last_tail; |
7b863bd5 | 830 | |
87f0532f | 831 | if (num_textprops > 0) |
2d6115c8 | 832 | { |
87f0532f | 833 | for (argnum = 0; argnum < num_textprops; argnum++) |
2d6115c8 | 834 | { |
87f0532f KH |
835 | this = args[textprops[argnum].argnum]; |
836 | copy_text_properties (make_number (textprops[argnum].from), | |
2d6115c8 | 837 | XSTRING (this)->size, this, |
87f0532f | 838 | make_number (textprops[argnum].to), val, Qnil); |
2d6115c8 KH |
839 | } |
840 | } | |
b4f334f7 | 841 | return val; |
7b863bd5 JB |
842 | } |
843 | \f | |
09ab3c3b KH |
844 | static Lisp_Object string_char_byte_cache_string; |
845 | static int string_char_byte_cache_charpos; | |
846 | static int string_char_byte_cache_bytepos; | |
847 | ||
57247650 KH |
848 | void |
849 | clear_string_char_byte_cache () | |
850 | { | |
851 | string_char_byte_cache_string = Qnil; | |
852 | } | |
853 | ||
ea35ce3d RS |
854 | /* Return the character index corresponding to CHAR_INDEX in STRING. */ |
855 | ||
856 | int | |
857 | string_char_to_byte (string, char_index) | |
858 | Lisp_Object string; | |
859 | int char_index; | |
860 | { | |
09ab3c3b KH |
861 | int i, i_byte; |
862 | int best_below, best_below_byte; | |
863 | int best_above, best_above_byte; | |
ea35ce3d RS |
864 | |
865 | if (! STRING_MULTIBYTE (string)) | |
866 | return char_index; | |
867 | ||
09ab3c3b KH |
868 | best_below = best_below_byte = 0; |
869 | best_above = XSTRING (string)->size; | |
fc932ac6 | 870 | best_above_byte = STRING_BYTES (XSTRING (string)); |
09ab3c3b KH |
871 | |
872 | if (EQ (string, string_char_byte_cache_string)) | |
873 | { | |
874 | if (string_char_byte_cache_charpos < char_index) | |
875 | { | |
876 | best_below = string_char_byte_cache_charpos; | |
877 | best_below_byte = string_char_byte_cache_bytepos; | |
878 | } | |
879 | else | |
880 | { | |
881 | best_above = string_char_byte_cache_charpos; | |
882 | best_above_byte = string_char_byte_cache_bytepos; | |
883 | } | |
884 | } | |
885 | ||
886 | if (char_index - best_below < best_above - char_index) | |
887 | { | |
888 | while (best_below < char_index) | |
889 | { | |
890 | int c; | |
891 | FETCH_STRING_CHAR_ADVANCE (c, string, best_below, best_below_byte); | |
892 | } | |
893 | i = best_below; | |
894 | i_byte = best_below_byte; | |
895 | } | |
896 | else | |
ea35ce3d | 897 | { |
09ab3c3b KH |
898 | while (best_above > char_index) |
899 | { | |
e50d9192 KH |
900 | unsigned char *pend = XSTRING (string)->data + best_above_byte; |
901 | unsigned char *pbeg = pend - best_above_byte; | |
902 | unsigned char *p = pend - 1; | |
903 | int bytes; | |
904 | ||
905 | while (p > pbeg && !CHAR_HEAD_P (*p)) p--; | |
906 | PARSE_MULTIBYTE_SEQ (p, pend - p, bytes); | |
907 | if (bytes == pend - p) | |
908 | best_above_byte -= bytes; | |
909 | else if (bytes > pend - p) | |
910 | best_above_byte -= (pend - p); | |
911 | else | |
09ab3c3b | 912 | best_above_byte--; |
09ab3c3b KH |
913 | best_above--; |
914 | } | |
915 | i = best_above; | |
916 | i_byte = best_above_byte; | |
ea35ce3d RS |
917 | } |
918 | ||
09ab3c3b KH |
919 | string_char_byte_cache_bytepos = i_byte; |
920 | string_char_byte_cache_charpos = i; | |
921 | string_char_byte_cache_string = string; | |
922 | ||
ea35ce3d RS |
923 | return i_byte; |
924 | } | |
09ab3c3b | 925 | \f |
ea35ce3d RS |
926 | /* Return the character index corresponding to BYTE_INDEX in STRING. */ |
927 | ||
928 | int | |
929 | string_byte_to_char (string, byte_index) | |
930 | Lisp_Object string; | |
931 | int byte_index; | |
932 | { | |
09ab3c3b KH |
933 | int i, i_byte; |
934 | int best_below, best_below_byte; | |
935 | int best_above, best_above_byte; | |
ea35ce3d RS |
936 | |
937 | if (! STRING_MULTIBYTE (string)) | |
938 | return byte_index; | |
939 | ||
09ab3c3b KH |
940 | best_below = best_below_byte = 0; |
941 | best_above = XSTRING (string)->size; | |
fc932ac6 | 942 | best_above_byte = STRING_BYTES (XSTRING (string)); |
09ab3c3b KH |
943 | |
944 | if (EQ (string, string_char_byte_cache_string)) | |
945 | { | |
946 | if (string_char_byte_cache_bytepos < byte_index) | |
947 | { | |
948 | best_below = string_char_byte_cache_charpos; | |
949 | best_below_byte = string_char_byte_cache_bytepos; | |
950 | } | |
951 | else | |
952 | { | |
953 | best_above = string_char_byte_cache_charpos; | |
954 | best_above_byte = string_char_byte_cache_bytepos; | |
955 | } | |
956 | } | |
957 | ||
958 | if (byte_index - best_below_byte < best_above_byte - byte_index) | |
959 | { | |
960 | while (best_below_byte < byte_index) | |
961 | { | |
962 | int c; | |
963 | FETCH_STRING_CHAR_ADVANCE (c, string, best_below, best_below_byte); | |
964 | } | |
965 | i = best_below; | |
966 | i_byte = best_below_byte; | |
967 | } | |
968 | else | |
ea35ce3d | 969 | { |
09ab3c3b KH |
970 | while (best_above_byte > byte_index) |
971 | { | |
e50d9192 KH |
972 | unsigned char *pend = XSTRING (string)->data + best_above_byte; |
973 | unsigned char *pbeg = pend - best_above_byte; | |
974 | unsigned char *p = pend - 1; | |
975 | int bytes; | |
976 | ||
977 | while (p > pbeg && !CHAR_HEAD_P (*p)) p--; | |
978 | PARSE_MULTIBYTE_SEQ (p, pend - p, bytes); | |
979 | if (bytes == pend - p) | |
980 | best_above_byte -= bytes; | |
981 | else if (bytes > pend - p) | |
982 | best_above_byte -= (pend - p); | |
983 | else | |
09ab3c3b | 984 | best_above_byte--; |
09ab3c3b KH |
985 | best_above--; |
986 | } | |
987 | i = best_above; | |
988 | i_byte = best_above_byte; | |
ea35ce3d RS |
989 | } |
990 | ||
09ab3c3b KH |
991 | string_char_byte_cache_bytepos = i_byte; |
992 | string_char_byte_cache_charpos = i; | |
993 | string_char_byte_cache_string = string; | |
994 | ||
ea35ce3d RS |
995 | return i; |
996 | } | |
09ab3c3b | 997 | \f |
ea35ce3d | 998 | /* Convert STRING to a multibyte string. |
2cef5737 | 999 | Single-byte characters 0240 through 0377 are converted |
ea35ce3d RS |
1000 | by adding nonascii_insert_offset to each. */ |
1001 | ||
1002 | Lisp_Object | |
1003 | string_make_multibyte (string) | |
1004 | Lisp_Object string; | |
1005 | { | |
1006 | unsigned char *buf; | |
1007 | int nbytes; | |
1008 | ||
1009 | if (STRING_MULTIBYTE (string)) | |
1010 | return string; | |
1011 | ||
1012 | nbytes = count_size_as_multibyte (XSTRING (string)->data, | |
1013 | XSTRING (string)->size); | |
6d475204 RS |
1014 | /* If all the chars are ASCII, they won't need any more bytes |
1015 | once converted. In that case, we can return STRING itself. */ | |
fc932ac6 | 1016 | if (nbytes == STRING_BYTES (XSTRING (string))) |
6d475204 RS |
1017 | return string; |
1018 | ||
ea35ce3d | 1019 | buf = (unsigned char *) alloca (nbytes); |
fc932ac6 | 1020 | copy_text (XSTRING (string)->data, buf, STRING_BYTES (XSTRING (string)), |
ea35ce3d RS |
1021 | 0, 1); |
1022 | ||
1023 | return make_multibyte_string (buf, XSTRING (string)->size, nbytes); | |
1024 | } | |
1025 | ||
1026 | /* Convert STRING to a single-byte string. */ | |
1027 | ||
1028 | Lisp_Object | |
1029 | string_make_unibyte (string) | |
1030 | Lisp_Object string; | |
1031 | { | |
1032 | unsigned char *buf; | |
1033 | ||
1034 | if (! STRING_MULTIBYTE (string)) | |
1035 | return string; | |
1036 | ||
1037 | buf = (unsigned char *) alloca (XSTRING (string)->size); | |
1038 | ||
fc932ac6 | 1039 | copy_text (XSTRING (string)->data, buf, STRING_BYTES (XSTRING (string)), |
ea35ce3d RS |
1040 | 1, 0); |
1041 | ||
1042 | return make_unibyte_string (buf, XSTRING (string)->size); | |
1043 | } | |
09ab3c3b KH |
1044 | |
1045 | DEFUN ("string-make-multibyte", Fstring_make_multibyte, Sstring_make_multibyte, | |
1046 | 1, 1, 0, | |
a6ee6aa4 RS |
1047 | "Return the multibyte equivalent of STRING.\n\ |
1048 | The function `unibyte-char-to-multibyte' is used to convert\n\ | |
1049 | each unibyte character to a multibyte character.") | |
09ab3c3b KH |
1050 | (string) |
1051 | Lisp_Object string; | |
1052 | { | |
aabd38ec KH |
1053 | CHECK_STRING (string, 0); |
1054 | ||
09ab3c3b KH |
1055 | return string_make_multibyte (string); |
1056 | } | |
1057 | ||
1058 | DEFUN ("string-make-unibyte", Fstring_make_unibyte, Sstring_make_unibyte, | |
1059 | 1, 1, 0, | |
a6ee6aa4 RS |
1060 | "Return the unibyte equivalent of STRING.\n\ |
1061 | Multibyte character codes are converted to unibyte\n\ | |
1062 | by using just the low 8 bits.") | |
09ab3c3b KH |
1063 | (string) |
1064 | Lisp_Object string; | |
1065 | { | |
aabd38ec KH |
1066 | CHECK_STRING (string, 0); |
1067 | ||
09ab3c3b KH |
1068 | return string_make_unibyte (string); |
1069 | } | |
6d475204 RS |
1070 | |
1071 | DEFUN ("string-as-unibyte", Fstring_as_unibyte, Sstring_as_unibyte, | |
1072 | 1, 1, 0, | |
1073 | "Return a unibyte string with the same individual bytes as STRING.\n\ | |
f4e09ae7 | 1074 | If STRING is unibyte, the result is STRING itself.\n\ |
f4e09ae7 | 1075 | Otherwise it is a newly created string, with no text properties.") |
6d475204 RS |
1076 | (string) |
1077 | Lisp_Object string; | |
1078 | { | |
aabd38ec KH |
1079 | CHECK_STRING (string, 0); |
1080 | ||
6d475204 RS |
1081 | if (STRING_MULTIBYTE (string)) |
1082 | { | |
1083 | string = Fcopy_sequence (string); | |
fc932ac6 | 1084 | XSTRING (string)->size = STRING_BYTES (XSTRING (string)); |
f4e09ae7 | 1085 | XSTRING (string)->intervals = NULL_INTERVAL; |
fa251740 | 1086 | SET_STRING_BYTES (XSTRING (string), -1); |
6d475204 RS |
1087 | } |
1088 | return string; | |
1089 | } | |
1090 | ||
1091 | DEFUN ("string-as-multibyte", Fstring_as_multibyte, Sstring_as_multibyte, | |
1092 | 1, 1, 0, | |
1093 | "Return a multibyte string with the same individual bytes as STRING.\n\ | |
f4e09ae7 RS |
1094 | If STRING is multibyte, the result is STRING itself.\n\ |
1095 | Otherwise it is a newly created string, with no text properties.") | |
6d475204 RS |
1096 | (string) |
1097 | Lisp_Object string; | |
1098 | { | |
aabd38ec KH |
1099 | CHECK_STRING (string, 0); |
1100 | ||
6d475204 RS |
1101 | if (! STRING_MULTIBYTE (string)) |
1102 | { | |
9658795c RS |
1103 | int nbytes = STRING_BYTES (XSTRING (string)); |
1104 | int newlen = multibyte_chars_in_text (XSTRING (string)->data, nbytes); | |
1105 | ||
1106 | string = Fcopy_sequence (string); | |
1107 | XSTRING (string)->size = newlen; | |
1108 | XSTRING (string)->size_byte = nbytes; | |
f4e09ae7 | 1109 | XSTRING (string)->intervals = NULL_INTERVAL; |
6d475204 RS |
1110 | } |
1111 | return string; | |
1112 | } | |
ea35ce3d | 1113 | \f |
7b863bd5 JB |
1114 | DEFUN ("copy-alist", Fcopy_alist, Scopy_alist, 1, 1, 0, |
1115 | "Return a copy of ALIST.\n\ | |
1116 | This is an alist which represents the same mapping from objects to objects,\n\ | |
1117 | but does not share the alist structure with ALIST.\n\ | |
1118 | The objects mapped (cars and cdrs of elements of the alist)\n\ | |
1119 | are shared, however.\n\ | |
1120 | Elements of ALIST that are not conses are also shared.") | |
1121 | (alist) | |
1122 | Lisp_Object alist; | |
1123 | { | |
1124 | register Lisp_Object tem; | |
1125 | ||
1126 | CHECK_LIST (alist, 0); | |
265a9e55 | 1127 | if (NILP (alist)) |
7b863bd5 JB |
1128 | return alist; |
1129 | alist = concat (1, &alist, Lisp_Cons, 0); | |
70949dac | 1130 | for (tem = alist; CONSP (tem); tem = XCDR (tem)) |
7b863bd5 JB |
1131 | { |
1132 | register Lisp_Object car; | |
70949dac | 1133 | car = XCAR (tem); |
7b863bd5 JB |
1134 | |
1135 | if (CONSP (car)) | |
70949dac | 1136 | XCAR (tem) = Fcons (XCAR (car), XCDR (car)); |
7b863bd5 JB |
1137 | } |
1138 | return alist; | |
1139 | } | |
1140 | ||
1141 | DEFUN ("substring", Fsubstring, Ssubstring, 2, 3, 0, | |
1142 | "Return a substring of STRING, starting at index FROM and ending before TO.\n\ | |
1143 | TO may be nil or omitted; then the substring runs to the end of STRING.\n\ | |
21fbc8e5 RS |
1144 | If FROM or TO is negative, it counts from the end.\n\ |
1145 | \n\ | |
1146 | This function allows vectors as well as strings.") | |
7b863bd5 JB |
1147 | (string, from, to) |
1148 | Lisp_Object string; | |
1149 | register Lisp_Object from, to; | |
1150 | { | |
ac811a55 | 1151 | Lisp_Object res; |
21fbc8e5 | 1152 | int size; |
ea35ce3d RS |
1153 | int size_byte; |
1154 | int from_char, to_char; | |
1155 | int from_byte, to_byte; | |
21fbc8e5 RS |
1156 | |
1157 | if (! (STRINGP (string) || VECTORP (string))) | |
1158 | wrong_type_argument (Qarrayp, string); | |
ac811a55 | 1159 | |
7b863bd5 | 1160 | CHECK_NUMBER (from, 1); |
21fbc8e5 RS |
1161 | |
1162 | if (STRINGP (string)) | |
ea35ce3d RS |
1163 | { |
1164 | size = XSTRING (string)->size; | |
fc932ac6 | 1165 | size_byte = STRING_BYTES (XSTRING (string)); |
ea35ce3d | 1166 | } |
21fbc8e5 RS |
1167 | else |
1168 | size = XVECTOR (string)->size; | |
1169 | ||
265a9e55 | 1170 | if (NILP (to)) |
ea35ce3d RS |
1171 | { |
1172 | to_char = size; | |
1173 | to_byte = size_byte; | |
1174 | } | |
7b863bd5 | 1175 | else |
ea35ce3d RS |
1176 | { |
1177 | CHECK_NUMBER (to, 2); | |
1178 | ||
1179 | to_char = XINT (to); | |
1180 | if (to_char < 0) | |
1181 | to_char += size; | |
1182 | ||
1183 | if (STRINGP (string)) | |
1184 | to_byte = string_char_to_byte (string, to_char); | |
1185 | } | |
1186 | ||
1187 | from_char = XINT (from); | |
1188 | if (from_char < 0) | |
1189 | from_char += size; | |
1190 | if (STRINGP (string)) | |
1191 | from_byte = string_char_to_byte (string, from_char); | |
7b863bd5 | 1192 | |
ea35ce3d RS |
1193 | if (!(0 <= from_char && from_char <= to_char && to_char <= size)) |
1194 | args_out_of_range_3 (string, make_number (from_char), | |
1195 | make_number (to_char)); | |
7b863bd5 | 1196 | |
21fbc8e5 RS |
1197 | if (STRINGP (string)) |
1198 | { | |
b10b2daa RS |
1199 | res = make_specified_string (XSTRING (string)->data + from_byte, |
1200 | to_char - from_char, to_byte - from_byte, | |
1201 | STRING_MULTIBYTE (string)); | |
21ab867f AS |
1202 | copy_text_properties (make_number (from_char), make_number (to_char), |
1203 | string, make_number (0), res, Qnil); | |
ea35ce3d RS |
1204 | } |
1205 | else | |
1206 | res = Fvector (to_char - from_char, | |
1207 | XVECTOR (string)->contents + from_char); | |
1208 | ||
1209 | return res; | |
1210 | } | |
1211 | ||
1212 | /* Extract a substring of STRING, giving start and end positions | |
1213 | both in characters and in bytes. */ | |
1214 | ||
1215 | Lisp_Object | |
1216 | substring_both (string, from, from_byte, to, to_byte) | |
1217 | Lisp_Object string; | |
1218 | int from, from_byte, to, to_byte; | |
1219 | { | |
1220 | Lisp_Object res; | |
1221 | int size; | |
1222 | int size_byte; | |
1223 | ||
1224 | if (! (STRINGP (string) || VECTORP (string))) | |
1225 | wrong_type_argument (Qarrayp, string); | |
1226 | ||
1227 | if (STRINGP (string)) | |
1228 | { | |
1229 | size = XSTRING (string)->size; | |
fc932ac6 | 1230 | size_byte = STRING_BYTES (XSTRING (string)); |
ea35ce3d RS |
1231 | } |
1232 | else | |
1233 | size = XVECTOR (string)->size; | |
1234 | ||
1235 | if (!(0 <= from && from <= to && to <= size)) | |
1236 | args_out_of_range_3 (string, make_number (from), make_number (to)); | |
1237 | ||
1238 | if (STRINGP (string)) | |
1239 | { | |
b10b2daa RS |
1240 | res = make_specified_string (XSTRING (string)->data + from_byte, |
1241 | to - from, to_byte - from_byte, | |
1242 | STRING_MULTIBYTE (string)); | |
21ab867f AS |
1243 | copy_text_properties (make_number (from), make_number (to), |
1244 | string, make_number (0), res, Qnil); | |
21fbc8e5 RS |
1245 | } |
1246 | else | |
ea35ce3d RS |
1247 | res = Fvector (to - from, |
1248 | XVECTOR (string)->contents + from); | |
b4f334f7 | 1249 | |
ac811a55 | 1250 | return res; |
7b863bd5 JB |
1251 | } |
1252 | \f | |
1253 | DEFUN ("nthcdr", Fnthcdr, Snthcdr, 2, 2, 0, | |
1254 | "Take cdr N times on LIST, returns the result.") | |
1255 | (n, list) | |
1256 | Lisp_Object n; | |
1257 | register Lisp_Object list; | |
1258 | { | |
1259 | register int i, num; | |
1260 | CHECK_NUMBER (n, 0); | |
1261 | num = XINT (n); | |
265a9e55 | 1262 | for (i = 0; i < num && !NILP (list); i++) |
7b863bd5 JB |
1263 | { |
1264 | QUIT; | |
1265 | list = Fcdr (list); | |
1266 | } | |
1267 | return list; | |
1268 | } | |
1269 | ||
1270 | DEFUN ("nth", Fnth, Snth, 2, 2, 0, | |
1271 | "Return the Nth element of LIST.\n\ | |
1272 | N counts from zero. If LIST is not that long, nil is returned.") | |
1273 | (n, list) | |
1274 | Lisp_Object n, list; | |
1275 | { | |
1276 | return Fcar (Fnthcdr (n, list)); | |
1277 | } | |
1278 | ||
1279 | DEFUN ("elt", Felt, Selt, 2, 2, 0, | |
1280 | "Return element of SEQUENCE at index N.") | |
88fe8140 EN |
1281 | (sequence, n) |
1282 | register Lisp_Object sequence, n; | |
7b863bd5 JB |
1283 | { |
1284 | CHECK_NUMBER (n, 0); | |
1285 | while (1) | |
1286 | { | |
88fe8140 EN |
1287 | if (CONSP (sequence) || NILP (sequence)) |
1288 | return Fcar (Fnthcdr (n, sequence)); | |
1289 | else if (STRINGP (sequence) || VECTORP (sequence) | |
1290 | || BOOL_VECTOR_P (sequence) || CHAR_TABLE_P (sequence)) | |
1291 | return Faref (sequence, n); | |
7b863bd5 | 1292 | else |
88fe8140 | 1293 | sequence = wrong_type_argument (Qsequencep, sequence); |
7b863bd5 JB |
1294 | } |
1295 | } | |
1296 | ||
1297 | DEFUN ("member", Fmember, Smember, 2, 2, 0, | |
1d58e36f | 1298 | "Return non-nil if ELT is an element of LIST. Comparison done with `equal'.\n\ |
7b863bd5 JB |
1299 | The value is actually the tail of LIST whose car is ELT.") |
1300 | (elt, list) | |
1301 | register Lisp_Object elt; | |
1302 | Lisp_Object list; | |
1303 | { | |
1304 | register Lisp_Object tail; | |
70949dac | 1305 | for (tail = list; !NILP (tail); tail = XCDR (tail)) |
7b863bd5 JB |
1306 | { |
1307 | register Lisp_Object tem; | |
1308 | tem = Fcar (tail); | |
265a9e55 | 1309 | if (! NILP (Fequal (elt, tem))) |
7b863bd5 JB |
1310 | return tail; |
1311 | QUIT; | |
1312 | } | |
1313 | return Qnil; | |
1314 | } | |
1315 | ||
1316 | DEFUN ("memq", Fmemq, Smemq, 2, 2, 0, | |
1317 | "Return non-nil if ELT is an element of LIST. Comparison done with EQ.\n\ | |
1318 | The value is actually the tail of LIST whose car is ELT.") | |
1319 | (elt, list) | |
1320 | register Lisp_Object elt; | |
1321 | Lisp_Object list; | |
1322 | { | |
1323 | register Lisp_Object tail; | |
70949dac | 1324 | for (tail = list; !NILP (tail); tail = XCDR (tail)) |
7b863bd5 JB |
1325 | { |
1326 | register Lisp_Object tem; | |
1327 | tem = Fcar (tail); | |
1328 | if (EQ (elt, tem)) return tail; | |
1329 | QUIT; | |
1330 | } | |
1331 | return Qnil; | |
1332 | } | |
1333 | ||
1334 | DEFUN ("assq", Fassq, Sassq, 2, 2, 0, | |
3797b4c3 RS |
1335 | "Return non-nil if KEY is `eq' to the car of an element of LIST.\n\ |
1336 | The value is actually the element of LIST whose car is KEY.\n\ | |
7b863bd5 JB |
1337 | Elements of LIST that are not conses are ignored.") |
1338 | (key, list) | |
1339 | register Lisp_Object key; | |
1340 | Lisp_Object list; | |
1341 | { | |
1342 | register Lisp_Object tail; | |
70949dac | 1343 | for (tail = list; !NILP (tail); tail = XCDR (tail)) |
7b863bd5 JB |
1344 | { |
1345 | register Lisp_Object elt, tem; | |
1346 | elt = Fcar (tail); | |
1347 | if (!CONSP (elt)) continue; | |
70949dac | 1348 | tem = XCAR (elt); |
7b863bd5 JB |
1349 | if (EQ (key, tem)) return elt; |
1350 | QUIT; | |
1351 | } | |
1352 | return Qnil; | |
1353 | } | |
1354 | ||
1355 | /* Like Fassq but never report an error and do not allow quits. | |
1356 | Use only on lists known never to be circular. */ | |
1357 | ||
1358 | Lisp_Object | |
1359 | assq_no_quit (key, list) | |
1360 | register Lisp_Object key; | |
1361 | Lisp_Object list; | |
1362 | { | |
1363 | register Lisp_Object tail; | |
70949dac | 1364 | for (tail = list; CONSP (tail); tail = XCDR (tail)) |
7b863bd5 JB |
1365 | { |
1366 | register Lisp_Object elt, tem; | |
1367 | elt = Fcar (tail); | |
1368 | if (!CONSP (elt)) continue; | |
70949dac | 1369 | tem = XCAR (elt); |
7b863bd5 JB |
1370 | if (EQ (key, tem)) return elt; |
1371 | } | |
1372 | return Qnil; | |
1373 | } | |
1374 | ||
1375 | DEFUN ("assoc", Fassoc, Sassoc, 2, 2, 0, | |
3797b4c3 | 1376 | "Return non-nil if KEY is `equal' to the car of an element of LIST.\n\ |
0fb5a19c | 1377 | The value is actually the element of LIST whose car equals KEY.") |
7b863bd5 JB |
1378 | (key, list) |
1379 | register Lisp_Object key; | |
1380 | Lisp_Object list; | |
1381 | { | |
1382 | register Lisp_Object tail; | |
70949dac | 1383 | for (tail = list; !NILP (tail); tail = XCDR (tail)) |
7b863bd5 JB |
1384 | { |
1385 | register Lisp_Object elt, tem; | |
1386 | elt = Fcar (tail); | |
1387 | if (!CONSP (elt)) continue; | |
70949dac | 1388 | tem = Fequal (XCAR (elt), key); |
265a9e55 | 1389 | if (!NILP (tem)) return elt; |
7b863bd5 JB |
1390 | QUIT; |
1391 | } | |
1392 | return Qnil; | |
1393 | } | |
1394 | ||
1395 | DEFUN ("rassq", Frassq, Srassq, 2, 2, 0, | |
1396 | "Return non-nil if ELT is `eq' to the cdr of an element of LIST.\n\ | |
1397 | The value is actually the element of LIST whose cdr is ELT.") | |
1398 | (key, list) | |
1399 | register Lisp_Object key; | |
1400 | Lisp_Object list; | |
1401 | { | |
1402 | register Lisp_Object tail; | |
70949dac | 1403 | for (tail = list; !NILP (tail); tail = XCDR (tail)) |
7b863bd5 JB |
1404 | { |
1405 | register Lisp_Object elt, tem; | |
1406 | elt = Fcar (tail); | |
1407 | if (!CONSP (elt)) continue; | |
70949dac | 1408 | tem = XCDR (elt); |
7b863bd5 JB |
1409 | if (EQ (key, tem)) return elt; |
1410 | QUIT; | |
1411 | } | |
1412 | return Qnil; | |
1413 | } | |
0fb5a19c RS |
1414 | |
1415 | DEFUN ("rassoc", Frassoc, Srassoc, 2, 2, 0, | |
1416 | "Return non-nil if KEY is `equal' to the cdr of an element of LIST.\n\ | |
1417 | The value is actually the element of LIST whose cdr equals KEY.") | |
1418 | (key, list) | |
1419 | register Lisp_Object key; | |
1420 | Lisp_Object list; | |
1421 | { | |
1422 | register Lisp_Object tail; | |
70949dac | 1423 | for (tail = list; !NILP (tail); tail = XCDR (tail)) |
0fb5a19c RS |
1424 | { |
1425 | register Lisp_Object elt, tem; | |
1426 | elt = Fcar (tail); | |
1427 | if (!CONSP (elt)) continue; | |
70949dac | 1428 | tem = Fequal (XCDR (elt), key); |
0fb5a19c RS |
1429 | if (!NILP (tem)) return elt; |
1430 | QUIT; | |
1431 | } | |
1432 | return Qnil; | |
1433 | } | |
7b863bd5 JB |
1434 | \f |
1435 | DEFUN ("delq", Fdelq, Sdelq, 2, 2, 0, | |
1436 | "Delete by side effect any occurrences of ELT as a member of LIST.\n\ | |
1437 | The modified LIST is returned. Comparison is done with `eq'.\n\ | |
1438 | If the first member of LIST is ELT, there is no way to remove it by side effect;\n\ | |
1439 | therefore, write `(setq foo (delq element foo))'\n\ | |
1440 | to be sure of changing the value of `foo'.") | |
1441 | (elt, list) | |
1442 | register Lisp_Object elt; | |
1443 | Lisp_Object list; | |
1444 | { | |
1445 | register Lisp_Object tail, prev; | |
1446 | register Lisp_Object tem; | |
1447 | ||
1448 | tail = list; | |
1449 | prev = Qnil; | |
265a9e55 | 1450 | while (!NILP (tail)) |
7b863bd5 JB |
1451 | { |
1452 | tem = Fcar (tail); | |
1453 | if (EQ (elt, tem)) | |
1454 | { | |
265a9e55 | 1455 | if (NILP (prev)) |
70949dac | 1456 | list = XCDR (tail); |
7b863bd5 | 1457 | else |
70949dac | 1458 | Fsetcdr (prev, XCDR (tail)); |
7b863bd5 JB |
1459 | } |
1460 | else | |
1461 | prev = tail; | |
70949dac | 1462 | tail = XCDR (tail); |
7b863bd5 JB |
1463 | QUIT; |
1464 | } | |
1465 | return list; | |
1466 | } | |
1467 | ||
ca8dd546 | 1468 | DEFUN ("delete", Fdelete, Sdelete, 2, 2, 0, |
1e134a5f RM |
1469 | "Delete by side effect any occurrences of ELT as a member of LIST.\n\ |
1470 | The modified LIST is returned. Comparison is done with `equal'.\n\ | |
1d58e36f RS |
1471 | If the first member of LIST is ELT, deleting it is not a side effect;\n\ |
1472 | it is simply using a different list.\n\ | |
1473 | Therefore, write `(setq foo (delete element foo))'\n\ | |
1e134a5f RM |
1474 | to be sure of changing the value of `foo'.") |
1475 | (elt, list) | |
1476 | register Lisp_Object elt; | |
1477 | Lisp_Object list; | |
1478 | { | |
1479 | register Lisp_Object tail, prev; | |
1480 | register Lisp_Object tem; | |
1481 | ||
1482 | tail = list; | |
1483 | prev = Qnil; | |
265a9e55 | 1484 | while (!NILP (tail)) |
1e134a5f RM |
1485 | { |
1486 | tem = Fcar (tail); | |
f812877e | 1487 | if (! NILP (Fequal (elt, tem))) |
1e134a5f | 1488 | { |
265a9e55 | 1489 | if (NILP (prev)) |
70949dac | 1490 | list = XCDR (tail); |
1e134a5f | 1491 | else |
70949dac | 1492 | Fsetcdr (prev, XCDR (tail)); |
1e134a5f RM |
1493 | } |
1494 | else | |
1495 | prev = tail; | |
70949dac | 1496 | tail = XCDR (tail); |
1e134a5f RM |
1497 | QUIT; |
1498 | } | |
1499 | return list; | |
1500 | } | |
1501 | ||
7b863bd5 JB |
1502 | DEFUN ("nreverse", Fnreverse, Snreverse, 1, 1, 0, |
1503 | "Reverse LIST by modifying cdr pointers.\n\ | |
1504 | Returns the beginning of the reversed list.") | |
1505 | (list) | |
1506 | Lisp_Object list; | |
1507 | { | |
1508 | register Lisp_Object prev, tail, next; | |
1509 | ||
265a9e55 | 1510 | if (NILP (list)) return list; |
7b863bd5 JB |
1511 | prev = Qnil; |
1512 | tail = list; | |
265a9e55 | 1513 | while (!NILP (tail)) |
7b863bd5 JB |
1514 | { |
1515 | QUIT; | |
1516 | next = Fcdr (tail); | |
1517 | Fsetcdr (tail, prev); | |
1518 | prev = tail; | |
1519 | tail = next; | |
1520 | } | |
1521 | return prev; | |
1522 | } | |
1523 | ||
1524 | DEFUN ("reverse", Freverse, Sreverse, 1, 1, 0, | |
1525 | "Reverse LIST, copying. Returns the beginning of the reversed list.\n\ | |
1526 | See also the function `nreverse', which is used more often.") | |
1527 | (list) | |
1528 | Lisp_Object list; | |
1529 | { | |
9d14ae76 | 1530 | Lisp_Object new; |
7b863bd5 | 1531 | |
70949dac KR |
1532 | for (new = Qnil; CONSP (list); list = XCDR (list)) |
1533 | new = Fcons (XCAR (list), new); | |
9d14ae76 RS |
1534 | if (!NILP (list)) |
1535 | wrong_type_argument (Qconsp, list); | |
1536 | return new; | |
7b863bd5 JB |
1537 | } |
1538 | \f | |
1539 | Lisp_Object merge (); | |
1540 | ||
1541 | DEFUN ("sort", Fsort, Ssort, 2, 2, 0, | |
1542 | "Sort LIST, stably, comparing elements using PREDICATE.\n\ | |
1543 | Returns the sorted list. LIST is modified by side effects.\n\ | |
1544 | PREDICATE is called with two elements of LIST, and should return T\n\ | |
1545 | if the first element is \"less\" than the second.") | |
88fe8140 EN |
1546 | (list, predicate) |
1547 | Lisp_Object list, predicate; | |
7b863bd5 JB |
1548 | { |
1549 | Lisp_Object front, back; | |
1550 | register Lisp_Object len, tem; | |
1551 | struct gcpro gcpro1, gcpro2; | |
1552 | register int length; | |
1553 | ||
1554 | front = list; | |
1555 | len = Flength (list); | |
1556 | length = XINT (len); | |
1557 | if (length < 2) | |
1558 | return list; | |
1559 | ||
1560 | XSETINT (len, (length / 2) - 1); | |
1561 | tem = Fnthcdr (len, list); | |
1562 | back = Fcdr (tem); | |
1563 | Fsetcdr (tem, Qnil); | |
1564 | ||
1565 | GCPRO2 (front, back); | |
88fe8140 EN |
1566 | front = Fsort (front, predicate); |
1567 | back = Fsort (back, predicate); | |
7b863bd5 | 1568 | UNGCPRO; |
88fe8140 | 1569 | return merge (front, back, predicate); |
7b863bd5 JB |
1570 | } |
1571 | ||
1572 | Lisp_Object | |
1573 | merge (org_l1, org_l2, pred) | |
1574 | Lisp_Object org_l1, org_l2; | |
1575 | Lisp_Object pred; | |
1576 | { | |
1577 | Lisp_Object value; | |
1578 | register Lisp_Object tail; | |
1579 | Lisp_Object tem; | |
1580 | register Lisp_Object l1, l2; | |
1581 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
1582 | ||
1583 | l1 = org_l1; | |
1584 | l2 = org_l2; | |
1585 | tail = Qnil; | |
1586 | value = Qnil; | |
1587 | ||
1588 | /* It is sufficient to protect org_l1 and org_l2. | |
1589 | When l1 and l2 are updated, we copy the new values | |
1590 | back into the org_ vars. */ | |
1591 | GCPRO4 (org_l1, org_l2, pred, value); | |
1592 | ||
1593 | while (1) | |
1594 | { | |
265a9e55 | 1595 | if (NILP (l1)) |
7b863bd5 JB |
1596 | { |
1597 | UNGCPRO; | |
265a9e55 | 1598 | if (NILP (tail)) |
7b863bd5 JB |
1599 | return l2; |
1600 | Fsetcdr (tail, l2); | |
1601 | return value; | |
1602 | } | |
265a9e55 | 1603 | if (NILP (l2)) |
7b863bd5 JB |
1604 | { |
1605 | UNGCPRO; | |
265a9e55 | 1606 | if (NILP (tail)) |
7b863bd5 JB |
1607 | return l1; |
1608 | Fsetcdr (tail, l1); | |
1609 | return value; | |
1610 | } | |
1611 | tem = call2 (pred, Fcar (l2), Fcar (l1)); | |
265a9e55 | 1612 | if (NILP (tem)) |
7b863bd5 JB |
1613 | { |
1614 | tem = l1; | |
1615 | l1 = Fcdr (l1); | |
1616 | org_l1 = l1; | |
1617 | } | |
1618 | else | |
1619 | { | |
1620 | tem = l2; | |
1621 | l2 = Fcdr (l2); | |
1622 | org_l2 = l2; | |
1623 | } | |
265a9e55 | 1624 | if (NILP (tail)) |
7b863bd5 JB |
1625 | value = tem; |
1626 | else | |
1627 | Fsetcdr (tail, tem); | |
1628 | tail = tem; | |
1629 | } | |
1630 | } | |
1631 | \f | |
be9d483d BG |
1632 | |
1633 | DEFUN ("plist-get", Fplist_get, Splist_get, 2, 2, 0, | |
1fbb64aa | 1634 | "Extract a value from a property list.\n\ |
be9d483d | 1635 | PLIST is a property list, which is a list of the form\n\ |
c07289e0 | 1636 | \(PROP1 VALUE1 PROP2 VALUE2...). This function returns the value\n\ |
be9d483d BG |
1637 | corresponding to the given PROP, or nil if PROP is not\n\ |
1638 | one of the properties on the list.") | |
1fbb64aa EN |
1639 | (plist, prop) |
1640 | Lisp_Object plist; | |
7b863bd5 JB |
1641 | register Lisp_Object prop; |
1642 | { | |
1643 | register Lisp_Object tail; | |
70949dac | 1644 | for (tail = plist; !NILP (tail); tail = Fcdr (XCDR (tail))) |
7b863bd5 JB |
1645 | { |
1646 | register Lisp_Object tem; | |
1647 | tem = Fcar (tail); | |
1648 | if (EQ (prop, tem)) | |
70949dac | 1649 | return Fcar (XCDR (tail)); |
7b863bd5 JB |
1650 | } |
1651 | return Qnil; | |
1652 | } | |
1653 | ||
be9d483d BG |
1654 | DEFUN ("get", Fget, Sget, 2, 2, 0, |
1655 | "Return the value of SYMBOL's PROPNAME property.\n\ | |
c07289e0 RS |
1656 | This is the last value stored with `(put SYMBOL PROPNAME VALUE)'.") |
1657 | (symbol, propname) | |
1658 | Lisp_Object symbol, propname; | |
be9d483d | 1659 | { |
c07289e0 RS |
1660 | CHECK_SYMBOL (symbol, 0); |
1661 | return Fplist_get (XSYMBOL (symbol)->plist, propname); | |
be9d483d BG |
1662 | } |
1663 | ||
1664 | DEFUN ("plist-put", Fplist_put, Splist_put, 3, 3, 0, | |
1665 | "Change value in PLIST of PROP to VAL.\n\ | |
1666 | PLIST is a property list, which is a list of the form\n\ | |
c07289e0 | 1667 | \(PROP1 VALUE1 PROP2 VALUE2 ...). PROP is a symbol and VAL is any object.\n\ |
be9d483d | 1668 | If PROP is already a property on the list, its value is set to VAL,\n\ |
88435890 | 1669 | otherwise the new PROP VAL pair is added. The new plist is returned;\n\ |
be9d483d BG |
1670 | use `(setq x (plist-put x prop val))' to be sure to use the new value.\n\ |
1671 | The PLIST is modified by side effects.") | |
1672 | (plist, prop, val) | |
b4f334f7 KH |
1673 | Lisp_Object plist; |
1674 | register Lisp_Object prop; | |
1675 | Lisp_Object val; | |
7b863bd5 JB |
1676 | { |
1677 | register Lisp_Object tail, prev; | |
1678 | Lisp_Object newcell; | |
1679 | prev = Qnil; | |
70949dac KR |
1680 | for (tail = plist; CONSP (tail) && CONSP (XCDR (tail)); |
1681 | tail = XCDR (XCDR (tail))) | |
7b863bd5 | 1682 | { |
70949dac | 1683 | if (EQ (prop, XCAR (tail))) |
be9d483d | 1684 | { |
70949dac | 1685 | Fsetcar (XCDR (tail), val); |
be9d483d BG |
1686 | return plist; |
1687 | } | |
7b863bd5 JB |
1688 | prev = tail; |
1689 | } | |
1690 | newcell = Fcons (prop, Fcons (val, Qnil)); | |
265a9e55 | 1691 | if (NILP (prev)) |
be9d483d | 1692 | return newcell; |
7b863bd5 | 1693 | else |
70949dac | 1694 | Fsetcdr (XCDR (prev), newcell); |
be9d483d BG |
1695 | return plist; |
1696 | } | |
1697 | ||
1698 | DEFUN ("put", Fput, Sput, 3, 3, 0, | |
1699 | "Store SYMBOL's PROPNAME property with value VALUE.\n\ | |
1700 | It can be retrieved with `(get SYMBOL PROPNAME)'.") | |
c07289e0 RS |
1701 | (symbol, propname, value) |
1702 | Lisp_Object symbol, propname, value; | |
be9d483d | 1703 | { |
c07289e0 RS |
1704 | CHECK_SYMBOL (symbol, 0); |
1705 | XSYMBOL (symbol)->plist | |
1706 | = Fplist_put (XSYMBOL (symbol)->plist, propname, value); | |
1707 | return value; | |
7b863bd5 JB |
1708 | } |
1709 | ||
1710 | DEFUN ("equal", Fequal, Sequal, 2, 2, 0, | |
ea35ce3d | 1711 | "Return t if two Lisp objects have similar structure and contents.\n\ |
7b863bd5 JB |
1712 | They must have the same data type.\n\ |
1713 | Conses are compared by comparing the cars and the cdrs.\n\ | |
1714 | Vectors and strings are compared element by element.\n\ | |
d28c4332 RS |
1715 | Numbers are compared by value, but integers cannot equal floats.\n\ |
1716 | (Use `=' if you want integers and floats to be able to be equal.)\n\ | |
1717 | Symbols must match exactly.") | |
7b863bd5 JB |
1718 | (o1, o2) |
1719 | register Lisp_Object o1, o2; | |
1720 | { | |
6cb9cafb | 1721 | return internal_equal (o1, o2, 0) ? Qt : Qnil; |
e0f5cf5a RS |
1722 | } |
1723 | ||
6cb9cafb | 1724 | static int |
e0f5cf5a RS |
1725 | internal_equal (o1, o2, depth) |
1726 | register Lisp_Object o1, o2; | |
1727 | int depth; | |
1728 | { | |
1729 | if (depth > 200) | |
1730 | error ("Stack overflow in equal"); | |
4ff1aed9 | 1731 | |
6cb9cafb | 1732 | tail_recurse: |
7b863bd5 | 1733 | QUIT; |
4ff1aed9 RS |
1734 | if (EQ (o1, o2)) |
1735 | return 1; | |
1736 | if (XTYPE (o1) != XTYPE (o2)) | |
1737 | return 0; | |
1738 | ||
1739 | switch (XTYPE (o1)) | |
1740 | { | |
31ef7f7a | 1741 | #ifdef LISP_FLOAT_TYPE |
4ff1aed9 RS |
1742 | case Lisp_Float: |
1743 | return (extract_float (o1) == extract_float (o2)); | |
31ef7f7a | 1744 | #endif |
4ff1aed9 RS |
1745 | |
1746 | case Lisp_Cons: | |
70949dac | 1747 | if (!internal_equal (XCAR (o1), XCAR (o2), depth + 1)) |
4cab5074 | 1748 | return 0; |
70949dac KR |
1749 | o1 = XCDR (o1); |
1750 | o2 = XCDR (o2); | |
4cab5074 | 1751 | goto tail_recurse; |
4ff1aed9 RS |
1752 | |
1753 | case Lisp_Misc: | |
81d1fba6 | 1754 | if (XMISCTYPE (o1) != XMISCTYPE (o2)) |
6cb9cafb | 1755 | return 0; |
4ff1aed9 | 1756 | if (OVERLAYP (o1)) |
7b863bd5 | 1757 | { |
e23f814f | 1758 | if (!internal_equal (OVERLAY_START (o1), OVERLAY_START (o2), |
4ff1aed9 | 1759 | depth + 1) |
e23f814f | 1760 | || !internal_equal (OVERLAY_END (o1), OVERLAY_END (o2), |
4ff1aed9 | 1761 | depth + 1)) |
6cb9cafb | 1762 | return 0; |
4ff1aed9 RS |
1763 | o1 = XOVERLAY (o1)->plist; |
1764 | o2 = XOVERLAY (o2)->plist; | |
1765 | goto tail_recurse; | |
7b863bd5 | 1766 | } |
4ff1aed9 RS |
1767 | if (MARKERP (o1)) |
1768 | { | |
1769 | return (XMARKER (o1)->buffer == XMARKER (o2)->buffer | |
1770 | && (XMARKER (o1)->buffer == 0 | |
6ced1284 | 1771 | || XMARKER (o1)->bytepos == XMARKER (o2)->bytepos)); |
4ff1aed9 RS |
1772 | } |
1773 | break; | |
1774 | ||
1775 | case Lisp_Vectorlike: | |
4cab5074 KH |
1776 | { |
1777 | register int i, size; | |
1778 | size = XVECTOR (o1)->size; | |
1779 | /* Pseudovectors have the type encoded in the size field, so this test | |
1780 | actually checks that the objects have the same type as well as the | |
1781 | same size. */ | |
1782 | if (XVECTOR (o2)->size != size) | |
1783 | return 0; | |
e03f7933 RS |
1784 | /* Boolvectors are compared much like strings. */ |
1785 | if (BOOL_VECTOR_P (o1)) | |
1786 | { | |
e03f7933 | 1787 | int size_in_chars |
e22e4283 | 1788 | = (XBOOL_VECTOR (o1)->size + BITS_PER_CHAR - 1) / BITS_PER_CHAR; |
e03f7933 RS |
1789 | |
1790 | if (XBOOL_VECTOR (o1)->size != XBOOL_VECTOR (o2)->size) | |
1791 | return 0; | |
1792 | if (bcmp (XBOOL_VECTOR (o1)->data, XBOOL_VECTOR (o2)->data, | |
1793 | size_in_chars)) | |
1794 | return 0; | |
1795 | return 1; | |
1796 | } | |
ed73fcc1 | 1797 | if (WINDOW_CONFIGURATIONP (o1)) |
48646924 | 1798 | return compare_window_configurations (o1, o2, 0); |
e03f7933 RS |
1799 | |
1800 | /* Aside from them, only true vectors, char-tables, and compiled | |
1801 | functions are sensible to compare, so eliminate the others now. */ | |
4cab5074 KH |
1802 | if (size & PSEUDOVECTOR_FLAG) |
1803 | { | |
e03f7933 | 1804 | if (!(size & (PVEC_COMPILED | PVEC_CHAR_TABLE))) |
4cab5074 KH |
1805 | return 0; |
1806 | size &= PSEUDOVECTOR_SIZE_MASK; | |
1807 | } | |
1808 | for (i = 0; i < size; i++) | |
1809 | { | |
1810 | Lisp_Object v1, v2; | |
1811 | v1 = XVECTOR (o1)->contents [i]; | |
1812 | v2 = XVECTOR (o2)->contents [i]; | |
1813 | if (!internal_equal (v1, v2, depth + 1)) | |
1814 | return 0; | |
1815 | } | |
1816 | return 1; | |
1817 | } | |
4ff1aed9 RS |
1818 | break; |
1819 | ||
1820 | case Lisp_String: | |
4cab5074 KH |
1821 | if (XSTRING (o1)->size != XSTRING (o2)->size) |
1822 | return 0; | |
fc932ac6 | 1823 | if (STRING_BYTES (XSTRING (o1)) != STRING_BYTES (XSTRING (o2))) |
ea35ce3d | 1824 | return 0; |
4cab5074 | 1825 | if (bcmp (XSTRING (o1)->data, XSTRING (o2)->data, |
fc932ac6 | 1826 | STRING_BYTES (XSTRING (o1)))) |
4cab5074 | 1827 | return 0; |
4cab5074 | 1828 | return 1; |
7b863bd5 | 1829 | } |
6cb9cafb | 1830 | return 0; |
7b863bd5 JB |
1831 | } |
1832 | \f | |
2e34157c RS |
1833 | extern Lisp_Object Fmake_char_internal (); |
1834 | ||
7b863bd5 | 1835 | DEFUN ("fillarray", Ffillarray, Sfillarray, 2, 2, 0, |
e03f7933 RS |
1836 | "Store each element of ARRAY with ITEM.\n\ |
1837 | ARRAY is a vector, string, char-table, or bool-vector.") | |
7b863bd5 JB |
1838 | (array, item) |
1839 | Lisp_Object array, item; | |
1840 | { | |
1841 | register int size, index, charval; | |
1842 | retry: | |
7650760e | 1843 | if (VECTORP (array)) |
7b863bd5 JB |
1844 | { |
1845 | register Lisp_Object *p = XVECTOR (array)->contents; | |
1846 | size = XVECTOR (array)->size; | |
1847 | for (index = 0; index < size; index++) | |
1848 | p[index] = item; | |
1849 | } | |
e03f7933 RS |
1850 | else if (CHAR_TABLE_P (array)) |
1851 | { | |
1852 | register Lisp_Object *p = XCHAR_TABLE (array)->contents; | |
1853 | size = CHAR_TABLE_ORDINARY_SLOTS; | |
1854 | for (index = 0; index < size; index++) | |
1855 | p[index] = item; | |
1856 | XCHAR_TABLE (array)->defalt = Qnil; | |
1857 | } | |
7650760e | 1858 | else if (STRINGP (array)) |
7b863bd5 JB |
1859 | { |
1860 | register unsigned char *p = XSTRING (array)->data; | |
1861 | CHECK_NUMBER (item, 1); | |
1862 | charval = XINT (item); | |
1863 | size = XSTRING (array)->size; | |
57247650 KH |
1864 | if (STRING_MULTIBYTE (array)) |
1865 | { | |
1866 | unsigned char workbuf[4], *str; | |
1867 | int len = CHAR_STRING (charval, workbuf, str); | |
1868 | int size_byte = STRING_BYTES (XSTRING (array)); | |
1869 | unsigned char *p1 = p, *endp = p + size_byte; | |
95b8aba7 | 1870 | int i; |
57247650 | 1871 | |
95b8aba7 KH |
1872 | if (size != size_byte) |
1873 | while (p1 < endp) | |
1874 | { | |
1875 | int this_len = MULTIBYTE_FORM_LENGTH (p1, endp - p1); | |
1876 | if (len != this_len) | |
1877 | error ("Attempt to change byte length of a string"); | |
1878 | p1 += this_len; | |
1879 | } | |
57247650 KH |
1880 | for (i = 0; i < size_byte; i++) |
1881 | *p++ = str[i % len]; | |
1882 | } | |
1883 | else | |
1884 | for (index = 0; index < size; index++) | |
1885 | p[index] = charval; | |
7b863bd5 | 1886 | } |
e03f7933 RS |
1887 | else if (BOOL_VECTOR_P (array)) |
1888 | { | |
1889 | register unsigned char *p = XBOOL_VECTOR (array)->data; | |
e03f7933 | 1890 | int size_in_chars |
e22e4283 | 1891 | = (XBOOL_VECTOR (array)->size + BITS_PER_CHAR - 1) / BITS_PER_CHAR; |
e03f7933 RS |
1892 | |
1893 | charval = (! NILP (item) ? -1 : 0); | |
1894 | for (index = 0; index < size_in_chars; index++) | |
1895 | p[index] = charval; | |
1896 | } | |
7b863bd5 JB |
1897 | else |
1898 | { | |
1899 | array = wrong_type_argument (Qarrayp, array); | |
1900 | goto retry; | |
1901 | } | |
1902 | return array; | |
1903 | } | |
ea35ce3d | 1904 | \f |
999de246 RS |
1905 | DEFUN ("char-table-subtype", Fchar_table_subtype, Schar_table_subtype, |
1906 | 1, 1, 0, | |
1907 | "Return the subtype of char-table CHAR-TABLE. The value is a symbol.") | |
88fe8140 EN |
1908 | (char_table) |
1909 | Lisp_Object char_table; | |
999de246 | 1910 | { |
b4f334f7 | 1911 | CHECK_CHAR_TABLE (char_table, 0); |
999de246 | 1912 | |
88fe8140 | 1913 | return XCHAR_TABLE (char_table)->purpose; |
999de246 RS |
1914 | } |
1915 | ||
e03f7933 RS |
1916 | DEFUN ("char-table-parent", Fchar_table_parent, Schar_table_parent, |
1917 | 1, 1, 0, | |
1918 | "Return the parent char-table of CHAR-TABLE.\n\ | |
1919 | The value is either nil or another char-table.\n\ | |
1920 | If CHAR-TABLE holds nil for a given character,\n\ | |
1921 | then the actual applicable value is inherited from the parent char-table\n\ | |
1922 | \(or from its parents, if necessary).") | |
88fe8140 EN |
1923 | (char_table) |
1924 | Lisp_Object char_table; | |
e03f7933 | 1925 | { |
b4f334f7 | 1926 | CHECK_CHAR_TABLE (char_table, 0); |
e03f7933 | 1927 | |
88fe8140 | 1928 | return XCHAR_TABLE (char_table)->parent; |
e03f7933 RS |
1929 | } |
1930 | ||
1931 | DEFUN ("set-char-table-parent", Fset_char_table_parent, Sset_char_table_parent, | |
1932 | 2, 2, 0, | |
1933 | "Set the parent char-table of CHAR-TABLE to PARENT.\n\ | |
1934 | PARENT must be either nil or another char-table.") | |
88fe8140 EN |
1935 | (char_table, parent) |
1936 | Lisp_Object char_table, parent; | |
e03f7933 RS |
1937 | { |
1938 | Lisp_Object temp; | |
1939 | ||
b4f334f7 | 1940 | CHECK_CHAR_TABLE (char_table, 0); |
e03f7933 | 1941 | |
c8640abf RS |
1942 | if (!NILP (parent)) |
1943 | { | |
b4f334f7 | 1944 | CHECK_CHAR_TABLE (parent, 0); |
c8640abf RS |
1945 | |
1946 | for (temp = parent; !NILP (temp); temp = XCHAR_TABLE (temp)->parent) | |
55cc974d | 1947 | if (EQ (temp, char_table)) |
c8640abf RS |
1948 | error ("Attempt to make a chartable be its own parent"); |
1949 | } | |
e03f7933 | 1950 | |
88fe8140 | 1951 | XCHAR_TABLE (char_table)->parent = parent; |
e03f7933 RS |
1952 | |
1953 | return parent; | |
1954 | } | |
1955 | ||
1956 | DEFUN ("char-table-extra-slot", Fchar_table_extra_slot, Schar_table_extra_slot, | |
1957 | 2, 2, 0, | |
25c30748 | 1958 | "Return the value of CHAR-TABLE's extra-slot number N.") |
88fe8140 EN |
1959 | (char_table, n) |
1960 | Lisp_Object char_table, n; | |
e03f7933 | 1961 | { |
88fe8140 | 1962 | CHECK_CHAR_TABLE (char_table, 1); |
e03f7933 RS |
1963 | CHECK_NUMBER (n, 2); |
1964 | if (XINT (n) < 0 | |
88fe8140 EN |
1965 | || XINT (n) >= CHAR_TABLE_EXTRA_SLOTS (XCHAR_TABLE (char_table))) |
1966 | args_out_of_range (char_table, n); | |
e03f7933 | 1967 | |
88fe8140 | 1968 | return XCHAR_TABLE (char_table)->extras[XINT (n)]; |
e03f7933 RS |
1969 | } |
1970 | ||
1971 | DEFUN ("set-char-table-extra-slot", Fset_char_table_extra_slot, | |
1972 | Sset_char_table_extra_slot, | |
1973 | 3, 3, 0, | |
25c30748 | 1974 | "Set CHAR-TABLE's extra-slot number N to VALUE.") |
88fe8140 EN |
1975 | (char_table, n, value) |
1976 | Lisp_Object char_table, n, value; | |
e03f7933 | 1977 | { |
88fe8140 | 1978 | CHECK_CHAR_TABLE (char_table, 1); |
e03f7933 RS |
1979 | CHECK_NUMBER (n, 2); |
1980 | if (XINT (n) < 0 | |
88fe8140 EN |
1981 | || XINT (n) >= CHAR_TABLE_EXTRA_SLOTS (XCHAR_TABLE (char_table))) |
1982 | args_out_of_range (char_table, n); | |
e03f7933 | 1983 | |
88fe8140 | 1984 | return XCHAR_TABLE (char_table)->extras[XINT (n)] = value; |
e03f7933 | 1985 | } |
ea35ce3d | 1986 | \f |
999de246 RS |
1987 | DEFUN ("char-table-range", Fchar_table_range, Schar_table_range, |
1988 | 2, 2, 0, | |
88fe8140 | 1989 | "Return the value in CHAR-TABLE for a range of characters RANGE.\n\ |
6d475204 | 1990 | RANGE should be nil (for the default value)\n\ |
999de246 | 1991 | a vector which identifies a character set or a row of a character set,\n\ |
6d475204 | 1992 | a character set name, or a character code.") |
88fe8140 EN |
1993 | (char_table, range) |
1994 | Lisp_Object char_table, range; | |
999de246 | 1995 | { |
88fe8140 | 1996 | CHECK_CHAR_TABLE (char_table, 0); |
b4f334f7 | 1997 | |
999de246 | 1998 | if (EQ (range, Qnil)) |
88fe8140 | 1999 | return XCHAR_TABLE (char_table)->defalt; |
999de246 | 2000 | else if (INTEGERP (range)) |
88fe8140 | 2001 | return Faref (char_table, range); |
6d475204 RS |
2002 | else if (SYMBOLP (range)) |
2003 | { | |
2004 | Lisp_Object charset_info; | |
2005 | ||
2006 | charset_info = Fget (range, Qcharset); | |
2007 | CHECK_VECTOR (charset_info, 0); | |
2008 | ||
21ab867f AS |
2009 | return Faref (char_table, |
2010 | make_number (XINT (XVECTOR (charset_info)->contents[0]) | |
2011 | + 128)); | |
6d475204 | 2012 | } |
999de246 RS |
2013 | else if (VECTORP (range)) |
2014 | { | |
e814a159 | 2015 | if (XVECTOR (range)->size == 1) |
21ab867f AS |
2016 | return Faref (char_table, |
2017 | make_number (XINT (XVECTOR (range)->contents[0]) + 128)); | |
e814a159 RS |
2018 | else |
2019 | { | |
2020 | int size = XVECTOR (range)->size; | |
2021 | Lisp_Object *val = XVECTOR (range)->contents; | |
2022 | Lisp_Object ch = Fmake_char_internal (size <= 0 ? Qnil : val[0], | |
2023 | size <= 1 ? Qnil : val[1], | |
2024 | size <= 2 ? Qnil : val[2]); | |
2025 | return Faref (char_table, ch); | |
2026 | } | |
999de246 RS |
2027 | } |
2028 | else | |
2029 | error ("Invalid RANGE argument to `char-table-range'"); | |
2030 | } | |
2031 | ||
e03f7933 RS |
2032 | DEFUN ("set-char-table-range", Fset_char_table_range, Sset_char_table_range, |
2033 | 3, 3, 0, | |
88fe8140 | 2034 | "Set the value in CHAR-TABLE for a range of characters RANGE to VALUE.\n\ |
e03f7933 RS |
2035 | RANGE should be t (for all characters), nil (for the default value)\n\ |
2036 | a vector which identifies a character set or a row of a character set,\n\ | |
6d475204 | 2037 | a coding system, or a character code.") |
88fe8140 EN |
2038 | (char_table, range, value) |
2039 | Lisp_Object char_table, range, value; | |
e03f7933 RS |
2040 | { |
2041 | int i; | |
2042 | ||
88fe8140 | 2043 | CHECK_CHAR_TABLE (char_table, 0); |
b4f334f7 | 2044 | |
e03f7933 RS |
2045 | if (EQ (range, Qt)) |
2046 | for (i = 0; i < CHAR_TABLE_ORDINARY_SLOTS; i++) | |
88fe8140 | 2047 | XCHAR_TABLE (char_table)->contents[i] = value; |
e03f7933 | 2048 | else if (EQ (range, Qnil)) |
88fe8140 | 2049 | XCHAR_TABLE (char_table)->defalt = value; |
6d475204 RS |
2050 | else if (SYMBOLP (range)) |
2051 | { | |
2052 | Lisp_Object charset_info; | |
2053 | ||
2054 | charset_info = Fget (range, Qcharset); | |
2055 | CHECK_VECTOR (charset_info, 0); | |
2056 | ||
21ab867f AS |
2057 | return Faset (char_table, |
2058 | make_number (XINT (XVECTOR (charset_info)->contents[0]) | |
2059 | + 128), | |
6d475204 RS |
2060 | value); |
2061 | } | |
e03f7933 | 2062 | else if (INTEGERP (range)) |
88fe8140 | 2063 | Faset (char_table, range, value); |
e03f7933 RS |
2064 | else if (VECTORP (range)) |
2065 | { | |
e814a159 | 2066 | if (XVECTOR (range)->size == 1) |
21ab867f AS |
2067 | return Faset (char_table, |
2068 | make_number (XINT (XVECTOR (range)->contents[0]) + 128), | |
2069 | value); | |
e814a159 RS |
2070 | else |
2071 | { | |
2072 | int size = XVECTOR (range)->size; | |
2073 | Lisp_Object *val = XVECTOR (range)->contents; | |
2074 | Lisp_Object ch = Fmake_char_internal (size <= 0 ? Qnil : val[0], | |
2075 | size <= 1 ? Qnil : val[1], | |
2076 | size <= 2 ? Qnil : val[2]); | |
2077 | return Faset (char_table, ch, value); | |
2078 | } | |
e03f7933 RS |
2079 | } |
2080 | else | |
2081 | error ("Invalid RANGE argument to `set-char-table-range'"); | |
2082 | ||
2083 | return value; | |
2084 | } | |
e1335ba2 KH |
2085 | |
2086 | DEFUN ("set-char-table-default", Fset_char_table_default, | |
2087 | Sset_char_table_default, 3, 3, 0, | |
2088 | "Set the default value in CHAR-TABLE for a generic character CHAR to VALUE.\n\ | |
2089 | The generic character specifies the group of characters.\n\ | |
2090 | See also the documentation of make-char.") | |
2091 | (char_table, ch, value) | |
2092 | Lisp_Object char_table, ch, value; | |
2093 | { | |
ada0fa14 | 2094 | int c, charset, code1, code2; |
e1335ba2 KH |
2095 | Lisp_Object temp; |
2096 | ||
2097 | CHECK_CHAR_TABLE (char_table, 0); | |
2098 | CHECK_NUMBER (ch, 1); | |
2099 | ||
2100 | c = XINT (ch); | |
2db66414 | 2101 | SPLIT_CHAR (c, charset, code1, code2); |
0da528a9 KH |
2102 | |
2103 | /* Since we may want to set the default value for a character set | |
2104 | not yet defined, we check only if the character set is in the | |
2105 | valid range or not, instead of it is already defined or not. */ | |
2106 | if (! CHARSET_VALID_P (charset)) | |
f71599f4 | 2107 | invalid_character (c); |
e1335ba2 KH |
2108 | |
2109 | if (charset == CHARSET_ASCII) | |
2110 | return (XCHAR_TABLE (char_table)->defalt = value); | |
2111 | ||
2112 | /* Even if C is not a generic char, we had better behave as if a | |
2113 | generic char is specified. */ | |
0da528a9 | 2114 | if (charset == CHARSET_COMPOSITION || CHARSET_DIMENSION (charset) == 1) |
e1335ba2 KH |
2115 | code1 = 0; |
2116 | temp = XCHAR_TABLE (char_table)->contents[charset + 128]; | |
2117 | if (!code1) | |
2118 | { | |
2119 | if (SUB_CHAR_TABLE_P (temp)) | |
2120 | XCHAR_TABLE (temp)->defalt = value; | |
2121 | else | |
2122 | XCHAR_TABLE (char_table)->contents[charset + 128] = value; | |
2123 | return value; | |
2124 | } | |
2125 | char_table = temp; | |
2126 | if (! SUB_CHAR_TABLE_P (char_table)) | |
2127 | char_table = (XCHAR_TABLE (char_table)->contents[charset + 128] | |
2128 | = make_sub_char_table (temp)); | |
2129 | temp = XCHAR_TABLE (char_table)->contents[code1]; | |
2130 | if (SUB_CHAR_TABLE_P (temp)) | |
2131 | XCHAR_TABLE (temp)->defalt = value; | |
2132 | else | |
2133 | XCHAR_TABLE (char_table)->contents[code1] = value; | |
2134 | return value; | |
2135 | } | |
1d969a23 RS |
2136 | |
2137 | /* Look up the element in TABLE at index CH, | |
2138 | and return it as an integer. | |
2139 | If the element is nil, return CH itself. | |
2140 | (Actually we do that for any non-integer.) */ | |
2141 | ||
2142 | int | |
2143 | char_table_translate (table, ch) | |
2144 | Lisp_Object table; | |
2145 | int ch; | |
2146 | { | |
2147 | Lisp_Object value; | |
2148 | value = Faref (table, make_number (ch)); | |
2149 | if (! INTEGERP (value)) | |
2150 | return ch; | |
2151 | return XINT (value); | |
2152 | } | |
e03f7933 | 2153 | \f |
46ed603f | 2154 | /* Map C_FUNCTION or FUNCTION over SUBTABLE, calling it for each |
c8640abf RS |
2155 | character or group of characters that share a value. |
2156 | DEPTH is the current depth in the originally specified | |
2157 | chartable, and INDICES contains the vector indices | |
46ed603f RS |
2158 | for the levels our callers have descended. |
2159 | ||
2160 | ARG is passed to C_FUNCTION when that is called. */ | |
c8640abf RS |
2161 | |
2162 | void | |
46ed603f | 2163 | map_char_table (c_function, function, subtable, arg, depth, indices) |
22e6f12b AS |
2164 | void (*c_function) P_ ((Lisp_Object, Lisp_Object, Lisp_Object)); |
2165 | Lisp_Object function, subtable, arg, *indices; | |
1847b19b | 2166 | int depth; |
e03f7933 | 2167 | { |
3720677d | 2168 | int i, to; |
e03f7933 | 2169 | |
a8283a4a | 2170 | if (depth == 0) |
3720677d KH |
2171 | { |
2172 | /* At first, handle ASCII and 8-bit European characters. */ | |
2173 | for (i = 0; i < CHAR_TABLE_SINGLE_BYTE_SLOTS; i++) | |
2174 | { | |
46ed603f | 2175 | Lisp_Object elt = XCHAR_TABLE (subtable)->contents[i]; |
3720677d | 2176 | if (c_function) |
46ed603f | 2177 | (*c_function) (arg, make_number (i), elt); |
3720677d KH |
2178 | else |
2179 | call2 (function, make_number (i), elt); | |
2180 | } | |
ea35ce3d RS |
2181 | #if 0 /* If the char table has entries for higher characters, |
2182 | we should report them. */ | |
de86fcba KH |
2183 | if (NILP (current_buffer->enable_multibyte_characters)) |
2184 | return; | |
ea35ce3d | 2185 | #endif |
3720677d KH |
2186 | to = CHAR_TABLE_ORDINARY_SLOTS; |
2187 | } | |
a8283a4a | 2188 | else |
e03f7933 | 2189 | { |
de86fcba | 2190 | i = 32; |
3720677d | 2191 | to = SUB_CHAR_TABLE_ORDINARY_SLOTS; |
e03f7933 RS |
2192 | } |
2193 | ||
7e798f25 | 2194 | for (; i < to; i++) |
e03f7933 | 2195 | { |
46ed603f | 2196 | Lisp_Object elt = XCHAR_TABLE (subtable)->contents[i]; |
3720677d | 2197 | |
09ee221d | 2198 | XSETFASTINT (indices[depth], i); |
3720677d KH |
2199 | |
2200 | if (SUB_CHAR_TABLE_P (elt)) | |
2201 | { | |
2202 | if (depth >= 3) | |
2203 | error ("Too deep char table"); | |
7e798f25 | 2204 | map_char_table (c_function, function, elt, arg, depth + 1, indices); |
3720677d | 2205 | } |
e03f7933 | 2206 | else |
a8283a4a | 2207 | { |
3720677d KH |
2208 | int charset = XFASTINT (indices[0]) - 128, c1, c2, c; |
2209 | ||
a8283a4a KH |
2210 | if (CHARSET_DEFINED_P (charset)) |
2211 | { | |
3720677d KH |
2212 | c1 = depth >= 1 ? XFASTINT (indices[1]) : 0; |
2213 | c2 = depth >= 2 ? XFASTINT (indices[2]) : 0; | |
a8283a4a | 2214 | c = MAKE_NON_ASCII_CHAR (charset, c1, c2); |
3720677d | 2215 | if (c_function) |
46ed603f | 2216 | (*c_function) (arg, make_number (c), elt); |
3720677d KH |
2217 | else |
2218 | call2 (function, make_number (c), elt); | |
a8283a4a | 2219 | } |
b4f334f7 | 2220 | } |
e03f7933 RS |
2221 | } |
2222 | } | |
2223 | ||
2224 | DEFUN ("map-char-table", Fmap_char_table, Smap_char_table, | |
2225 | 2, 2, 0, | |
7e798f25 | 2226 | "Call FUNCTION for each (normal and generic) characters in CHAR-TABLE.\n\ |
e03f7933 | 2227 | FUNCTION is called with two arguments--a key and a value.\n\ |
7e798f25 | 2228 | The key is always a possible IDX argument to `aref'.") |
88fe8140 EN |
2229 | (function, char_table) |
2230 | Lisp_Object function, char_table; | |
e03f7933 | 2231 | { |
3720677d | 2232 | /* The depth of char table is at most 3. */ |
7e798f25 KH |
2233 | Lisp_Object indices[3]; |
2234 | ||
2235 | CHECK_CHAR_TABLE (char_table, 1); | |
e03f7933 | 2236 | |
46ed603f | 2237 | map_char_table (NULL, function, char_table, char_table, 0, indices); |
e03f7933 RS |
2238 | return Qnil; |
2239 | } | |
2240 | \f | |
7b863bd5 JB |
2241 | /* ARGSUSED */ |
2242 | Lisp_Object | |
2243 | nconc2 (s1, s2) | |
2244 | Lisp_Object s1, s2; | |
2245 | { | |
2246 | #ifdef NO_ARG_ARRAY | |
2247 | Lisp_Object args[2]; | |
2248 | args[0] = s1; | |
2249 | args[1] = s2; | |
2250 | return Fnconc (2, args); | |
2251 | #else | |
2252 | return Fnconc (2, &s1); | |
2253 | #endif /* NO_ARG_ARRAY */ | |
2254 | } | |
2255 | ||
2256 | DEFUN ("nconc", Fnconc, Snconc, 0, MANY, 0, | |
2257 | "Concatenate any number of lists by altering them.\n\ | |
2258 | Only the last argument is not altered, and need not be a list.") | |
2259 | (nargs, args) | |
2260 | int nargs; | |
2261 | Lisp_Object *args; | |
2262 | { | |
2263 | register int argnum; | |
2264 | register Lisp_Object tail, tem, val; | |
2265 | ||
2266 | val = Qnil; | |
2267 | ||
2268 | for (argnum = 0; argnum < nargs; argnum++) | |
2269 | { | |
2270 | tem = args[argnum]; | |
265a9e55 | 2271 | if (NILP (tem)) continue; |
7b863bd5 | 2272 | |
265a9e55 | 2273 | if (NILP (val)) |
7b863bd5 JB |
2274 | val = tem; |
2275 | ||
2276 | if (argnum + 1 == nargs) break; | |
2277 | ||
2278 | if (!CONSP (tem)) | |
2279 | tem = wrong_type_argument (Qlistp, tem); | |
2280 | ||
2281 | while (CONSP (tem)) | |
2282 | { | |
2283 | tail = tem; | |
2284 | tem = Fcdr (tail); | |
2285 | QUIT; | |
2286 | } | |
2287 | ||
2288 | tem = args[argnum + 1]; | |
2289 | Fsetcdr (tail, tem); | |
265a9e55 | 2290 | if (NILP (tem)) |
7b863bd5 JB |
2291 | args[argnum + 1] = tail; |
2292 | } | |
2293 | ||
2294 | return val; | |
2295 | } | |
2296 | \f | |
2297 | /* This is the guts of all mapping functions. | |
ea35ce3d RS |
2298 | Apply FN to each element of SEQ, one by one, |
2299 | storing the results into elements of VALS, a C vector of Lisp_Objects. | |
2300 | LENI is the length of VALS, which should also be the length of SEQ. */ | |
7b863bd5 JB |
2301 | |
2302 | static void | |
2303 | mapcar1 (leni, vals, fn, seq) | |
2304 | int leni; | |
2305 | Lisp_Object *vals; | |
2306 | Lisp_Object fn, seq; | |
2307 | { | |
2308 | register Lisp_Object tail; | |
2309 | Lisp_Object dummy; | |
2310 | register int i; | |
2311 | struct gcpro gcpro1, gcpro2, gcpro3; | |
2312 | ||
2313 | /* Don't let vals contain any garbage when GC happens. */ | |
2314 | for (i = 0; i < leni; i++) | |
2315 | vals[i] = Qnil; | |
2316 | ||
2317 | GCPRO3 (dummy, fn, seq); | |
2318 | gcpro1.var = vals; | |
2319 | gcpro1.nvars = leni; | |
2320 | /* We need not explicitly protect `tail' because it is used only on lists, and | |
2321 | 1) lists are not relocated and 2) the list is marked via `seq' so will not be freed */ | |
2322 | ||
7650760e | 2323 | if (VECTORP (seq)) |
7b863bd5 JB |
2324 | { |
2325 | for (i = 0; i < leni; i++) | |
2326 | { | |
2327 | dummy = XVECTOR (seq)->contents[i]; | |
2328 | vals[i] = call1 (fn, dummy); | |
2329 | } | |
2330 | } | |
33aa0881 KH |
2331 | else if (BOOL_VECTOR_P (seq)) |
2332 | { | |
2333 | for (i = 0; i < leni; i++) | |
2334 | { | |
2335 | int byte; | |
2336 | byte = XBOOL_VECTOR (seq)->data[i / BITS_PER_CHAR]; | |
2337 | if (byte & (1 << (i % BITS_PER_CHAR))) | |
2338 | dummy = Qt; | |
2339 | else | |
2340 | dummy = Qnil; | |
2341 | ||
2342 | vals[i] = call1 (fn, dummy); | |
2343 | } | |
2344 | } | |
ea35ce3d | 2345 | else if (STRINGP (seq) && ! STRING_MULTIBYTE (seq)) |
7b863bd5 | 2346 | { |
ea35ce3d | 2347 | /* Single-byte string. */ |
7b863bd5 JB |
2348 | for (i = 0; i < leni; i++) |
2349 | { | |
ad17573a | 2350 | XSETFASTINT (dummy, XSTRING (seq)->data[i]); |
7b863bd5 JB |
2351 | vals[i] = call1 (fn, dummy); |
2352 | } | |
2353 | } | |
ea35ce3d RS |
2354 | else if (STRINGP (seq)) |
2355 | { | |
2356 | /* Multi-byte string. */ | |
ea35ce3d RS |
2357 | int i_byte; |
2358 | ||
2359 | for (i = 0, i_byte = 0; i < leni;) | |
2360 | { | |
2361 | int c; | |
0ab6a3d8 KH |
2362 | int i_before = i; |
2363 | ||
2364 | FETCH_STRING_CHAR_ADVANCE (c, seq, i, i_byte); | |
ea35ce3d | 2365 | XSETFASTINT (dummy, c); |
0ab6a3d8 | 2366 | vals[i_before] = call1 (fn, dummy); |
ea35ce3d RS |
2367 | } |
2368 | } | |
7b863bd5 JB |
2369 | else /* Must be a list, since Flength did not get an error */ |
2370 | { | |
2371 | tail = seq; | |
2372 | for (i = 0; i < leni; i++) | |
2373 | { | |
2374 | vals[i] = call1 (fn, Fcar (tail)); | |
70949dac | 2375 | tail = XCDR (tail); |
7b863bd5 JB |
2376 | } |
2377 | } | |
2378 | ||
2379 | UNGCPRO; | |
2380 | } | |
2381 | ||
2382 | DEFUN ("mapconcat", Fmapconcat, Smapconcat, 3, 3, 0, | |
88fe8140 EN |
2383 | "Apply FUNCTION to each element of SEQUENCE, and concat the results as strings.\n\ |
2384 | In between each pair of results, stick in SEPARATOR. Thus, \" \" as\n\ | |
33aa0881 KH |
2385 | SEPARATOR results in spaces between the values returned by FUNCTION.\n\ |
2386 | SEQUENCE may be a list, a vector, a bool-vector, or a string.") | |
88fe8140 EN |
2387 | (function, sequence, separator) |
2388 | Lisp_Object function, sequence, separator; | |
7b863bd5 JB |
2389 | { |
2390 | Lisp_Object len; | |
2391 | register int leni; | |
2392 | int nargs; | |
2393 | register Lisp_Object *args; | |
2394 | register int i; | |
2395 | struct gcpro gcpro1; | |
2396 | ||
88fe8140 | 2397 | len = Flength (sequence); |
7b863bd5 JB |
2398 | leni = XINT (len); |
2399 | nargs = leni + leni - 1; | |
2400 | if (nargs < 0) return build_string (""); | |
2401 | ||
2402 | args = (Lisp_Object *) alloca (nargs * sizeof (Lisp_Object)); | |
2403 | ||
88fe8140 EN |
2404 | GCPRO1 (separator); |
2405 | mapcar1 (leni, args, function, sequence); | |
7b863bd5 JB |
2406 | UNGCPRO; |
2407 | ||
2408 | for (i = leni - 1; i >= 0; i--) | |
2409 | args[i + i] = args[i]; | |
b4f334f7 | 2410 | |
7b863bd5 | 2411 | for (i = 1; i < nargs; i += 2) |
88fe8140 | 2412 | args[i] = separator; |
7b863bd5 JB |
2413 | |
2414 | return Fconcat (nargs, args); | |
2415 | } | |
2416 | ||
2417 | DEFUN ("mapcar", Fmapcar, Smapcar, 2, 2, 0, | |
2418 | "Apply FUNCTION to each element of SEQUENCE, and make a list of the results.\n\ | |
2419 | The result is a list just as long as SEQUENCE.\n\ | |
33aa0881 | 2420 | SEQUENCE may be a list, a vector, a bool-vector, or a string.") |
88fe8140 EN |
2421 | (function, sequence) |
2422 | Lisp_Object function, sequence; | |
7b863bd5 JB |
2423 | { |
2424 | register Lisp_Object len; | |
2425 | register int leni; | |
2426 | register Lisp_Object *args; | |
2427 | ||
88fe8140 | 2428 | len = Flength (sequence); |
7b863bd5 JB |
2429 | leni = XFASTINT (len); |
2430 | args = (Lisp_Object *) alloca (leni * sizeof (Lisp_Object)); | |
2431 | ||
88fe8140 | 2432 | mapcar1 (leni, args, function, sequence); |
7b863bd5 JB |
2433 | |
2434 | return Flist (leni, args); | |
2435 | } | |
2436 | \f | |
2437 | /* Anything that calls this function must protect from GC! */ | |
2438 | ||
2439 | DEFUN ("y-or-n-p", Fy_or_n_p, Sy_or_n_p, 1, 1, 0, | |
2440 | "Ask user a \"y or n\" question. Return t if answer is \"y\".\n\ | |
c763f396 RS |
2441 | Takes one argument, which is the string to display to ask the question.\n\ |
2442 | It should end in a space; `y-or-n-p' adds `(y or n) ' to it.\n\ | |
7b863bd5 | 2443 | No confirmation of the answer is requested; a single character is enough.\n\ |
2b8503ea KH |
2444 | Also accepts Space to mean yes, or Delete to mean no. \(Actually, it uses\n\ |
2445 | the bindings in query-replace-map; see the documentation of that variable\n\ | |
2446 | for more information. In this case, the useful bindings are `act', `skip',\n\ | |
2447 | `recenter', and `quit'.\)\n\ | |
0c6ca44b DL |
2448 | \n\ |
2449 | Under a windowing system a dialog box will be used if `last-nonmenu-event'\n\ | |
2450 | is nil.") | |
7b863bd5 JB |
2451 | (prompt) |
2452 | Lisp_Object prompt; | |
2453 | { | |
2b8503ea | 2454 | register Lisp_Object obj, key, def, map; |
f5313ed9 | 2455 | register int answer; |
7b863bd5 JB |
2456 | Lisp_Object xprompt; |
2457 | Lisp_Object args[2]; | |
7b863bd5 | 2458 | struct gcpro gcpro1, gcpro2; |
eb4ffa4e RS |
2459 | int count = specpdl_ptr - specpdl; |
2460 | ||
2461 | specbind (Qcursor_in_echo_area, Qt); | |
7b863bd5 | 2462 | |
f5313ed9 RS |
2463 | map = Fsymbol_value (intern ("query-replace-map")); |
2464 | ||
7b863bd5 JB |
2465 | CHECK_STRING (prompt, 0); |
2466 | xprompt = prompt; | |
2467 | GCPRO2 (prompt, xprompt); | |
2468 | ||
2469 | while (1) | |
2470 | { | |
eb4ffa4e | 2471 | |
0ef68e8a | 2472 | #ifdef HAVE_MENUS |
588064ce | 2473 | if ((NILP (last_nonmenu_event) || CONSP (last_nonmenu_event)) |
bdd8d692 | 2474 | && use_dialog_box |
0ef68e8a | 2475 | && have_menus_p ()) |
1db4cfb2 RS |
2476 | { |
2477 | Lisp_Object pane, menu; | |
a3b14a45 | 2478 | redisplay_preserve_echo_area (); |
1db4cfb2 RS |
2479 | pane = Fcons (Fcons (build_string ("Yes"), Qt), |
2480 | Fcons (Fcons (build_string ("No"), Qnil), | |
2481 | Qnil)); | |
ec26e1b9 | 2482 | menu = Fcons (prompt, pane); |
d2f28f78 | 2483 | obj = Fx_popup_dialog (Qt, menu); |
1db4cfb2 RS |
2484 | answer = !NILP (obj); |
2485 | break; | |
2486 | } | |
0ef68e8a | 2487 | #endif /* HAVE_MENUS */ |
dfa89228 | 2488 | cursor_in_echo_area = 1; |
b312cc52 | 2489 | choose_minibuf_frame (); |
ea35ce3d | 2490 | message_with_string ("%s(y or n) ", xprompt, 0); |
7b863bd5 | 2491 | |
2d8e7e1f RS |
2492 | if (minibuffer_auto_raise) |
2493 | { | |
2494 | Lisp_Object mini_frame; | |
2495 | ||
2496 | mini_frame = WINDOW_FRAME (XWINDOW (minibuf_window)); | |
2497 | ||
2498 | Fraise_frame (mini_frame); | |
2499 | } | |
2500 | ||
7ba13c57 | 2501 | obj = read_filtered_event (1, 0, 0, 0); |
dfa89228 KH |
2502 | cursor_in_echo_area = 0; |
2503 | /* If we need to quit, quit with cursor_in_echo_area = 0. */ | |
2504 | QUIT; | |
a63f658b | 2505 | |
f5313ed9 | 2506 | key = Fmake_vector (make_number (1), obj); |
aad2a123 | 2507 | def = Flookup_key (map, key, Qt); |
7b863bd5 | 2508 | |
f5313ed9 RS |
2509 | if (EQ (def, intern ("skip"))) |
2510 | { | |
2511 | answer = 0; | |
2512 | break; | |
2513 | } | |
2514 | else if (EQ (def, intern ("act"))) | |
2515 | { | |
2516 | answer = 1; | |
2517 | break; | |
2518 | } | |
29944b73 RS |
2519 | else if (EQ (def, intern ("recenter"))) |
2520 | { | |
2521 | Frecenter (Qnil); | |
2522 | xprompt = prompt; | |
2523 | continue; | |
2524 | } | |
f5313ed9 | 2525 | else if (EQ (def, intern ("quit"))) |
7b863bd5 | 2526 | Vquit_flag = Qt; |
ec63af1b RS |
2527 | /* We want to exit this command for exit-prefix, |
2528 | and this is the only way to do it. */ | |
2529 | else if (EQ (def, intern ("exit-prefix"))) | |
2530 | Vquit_flag = Qt; | |
f5313ed9 | 2531 | |
7b863bd5 | 2532 | QUIT; |
20aa96aa JB |
2533 | |
2534 | /* If we don't clear this, then the next call to read_char will | |
2535 | return quit_char again, and we'll enter an infinite loop. */ | |
088880f1 | 2536 | Vquit_flag = Qnil; |
7b863bd5 JB |
2537 | |
2538 | Fding (Qnil); | |
2539 | Fdiscard_input (); | |
2540 | if (EQ (xprompt, prompt)) | |
2541 | { | |
2542 | args[0] = build_string ("Please answer y or n. "); | |
2543 | args[1] = prompt; | |
2544 | xprompt = Fconcat (2, args); | |
2545 | } | |
2546 | } | |
2547 | UNGCPRO; | |
6a8a9750 | 2548 | |
09c95874 RS |
2549 | if (! noninteractive) |
2550 | { | |
2551 | cursor_in_echo_area = -1; | |
ea35ce3d RS |
2552 | message_with_string (answer ? "%s(y or n) y" : "%s(y or n) n", |
2553 | xprompt, 0); | |
09c95874 | 2554 | } |
6a8a9750 | 2555 | |
eb4ffa4e | 2556 | unbind_to (count, Qnil); |
f5313ed9 | 2557 | return answer ? Qt : Qnil; |
7b863bd5 JB |
2558 | } |
2559 | \f | |
2560 | /* This is how C code calls `yes-or-no-p' and allows the user | |
2561 | to redefined it. | |
2562 | ||
2563 | Anything that calls this function must protect from GC! */ | |
2564 | ||
2565 | Lisp_Object | |
2566 | do_yes_or_no_p (prompt) | |
2567 | Lisp_Object prompt; | |
2568 | { | |
2569 | return call1 (intern ("yes-or-no-p"), prompt); | |
2570 | } | |
2571 | ||
2572 | /* Anything that calls this function must protect from GC! */ | |
2573 | ||
2574 | DEFUN ("yes-or-no-p", Fyes_or_no_p, Syes_or_no_p, 1, 1, 0, | |
c763f396 RS |
2575 | "Ask user a yes-or-no question. Return t if answer is yes.\n\ |
2576 | Takes one argument, which is the string to display to ask the question.\n\ | |
2577 | It should end in a space; `yes-or-no-p' adds `(yes or no) ' to it.\n\ | |
2578 | The user must confirm the answer with RET,\n\ | |
0c6ca44b DL |
2579 | and can edit it until it has been confirmed.\n\ |
2580 | \n\ | |
2581 | Under a windowing system a dialog box will be used if `last-nonmenu-event'\n\ | |
2582 | is nil.") | |
7b863bd5 JB |
2583 | (prompt) |
2584 | Lisp_Object prompt; | |
2585 | { | |
2586 | register Lisp_Object ans; | |
2587 | Lisp_Object args[2]; | |
2588 | struct gcpro gcpro1; | |
2589 | ||
2590 | CHECK_STRING (prompt, 0); | |
2591 | ||
0ef68e8a | 2592 | #ifdef HAVE_MENUS |
b4f334f7 | 2593 | if ((NILP (last_nonmenu_event) || CONSP (last_nonmenu_event)) |
bdd8d692 | 2594 | && use_dialog_box |
0ef68e8a | 2595 | && have_menus_p ()) |
1db4cfb2 RS |
2596 | { |
2597 | Lisp_Object pane, menu, obj; | |
a3b14a45 | 2598 | redisplay_preserve_echo_area (); |
1db4cfb2 RS |
2599 | pane = Fcons (Fcons (build_string ("Yes"), Qt), |
2600 | Fcons (Fcons (build_string ("No"), Qnil), | |
2601 | Qnil)); | |
2602 | GCPRO1 (pane); | |
ec26e1b9 | 2603 | menu = Fcons (prompt, pane); |
b5ccb0a9 | 2604 | obj = Fx_popup_dialog (Qt, menu); |
1db4cfb2 RS |
2605 | UNGCPRO; |
2606 | return obj; | |
2607 | } | |
0ef68e8a | 2608 | #endif /* HAVE_MENUS */ |
1db4cfb2 | 2609 | |
7b863bd5 JB |
2610 | args[0] = prompt; |
2611 | args[1] = build_string ("(yes or no) "); | |
2612 | prompt = Fconcat (2, args); | |
2613 | ||
2614 | GCPRO1 (prompt); | |
1db4cfb2 | 2615 | |
7b863bd5 JB |
2616 | while (1) |
2617 | { | |
0ce830bc | 2618 | ans = Fdowncase (Fread_from_minibuffer (prompt, Qnil, Qnil, Qnil, |
b24014d4 KH |
2619 | Qyes_or_no_p_history, Qnil, |
2620 | Qnil)); | |
7b863bd5 JB |
2621 | if (XSTRING (ans)->size == 3 && !strcmp (XSTRING (ans)->data, "yes")) |
2622 | { | |
2623 | UNGCPRO; | |
2624 | return Qt; | |
2625 | } | |
2626 | if (XSTRING (ans)->size == 2 && !strcmp (XSTRING (ans)->data, "no")) | |
2627 | { | |
2628 | UNGCPRO; | |
2629 | return Qnil; | |
2630 | } | |
2631 | ||
2632 | Fding (Qnil); | |
2633 | Fdiscard_input (); | |
2634 | message ("Please answer yes or no."); | |
99dc4745 | 2635 | Fsleep_for (make_number (2), Qnil); |
7b863bd5 | 2636 | } |
7b863bd5 JB |
2637 | } |
2638 | \f | |
f4b50f66 | 2639 | DEFUN ("load-average", Fload_average, Sload_average, 0, 1, 0, |
7b863bd5 JB |
2640 | "Return list of 1 minute, 5 minute and 15 minute load averages.\n\ |
2641 | Each of the three load averages is multiplied by 100,\n\ | |
daa37602 | 2642 | then converted to integer.\n\ |
f4b50f66 RS |
2643 | When USE-FLOATS is non-nil, floats will be used instead of integers.\n\ |
2644 | These floats are not multiplied by 100.\n\n\ | |
daa37602 JB |
2645 | If the 5-minute or 15-minute load averages are not available, return a\n\ |
2646 | shortened list, containing only those averages which are available.") | |
f4b50f66 RS |
2647 | (use_floats) |
2648 | Lisp_Object use_floats; | |
7b863bd5 | 2649 | { |
daa37602 JB |
2650 | double load_ave[3]; |
2651 | int loads = getloadavg (load_ave, 3); | |
f4b50f66 | 2652 | Lisp_Object ret = Qnil; |
7b863bd5 | 2653 | |
daa37602 JB |
2654 | if (loads < 0) |
2655 | error ("load-average not implemented for this operating system"); | |
2656 | ||
f4b50f66 RS |
2657 | while (loads-- > 0) |
2658 | { | |
2659 | Lisp_Object load = (NILP (use_floats) ? | |
2660 | make_number ((int) (100.0 * load_ave[loads])) | |
2661 | : make_float (load_ave[loads])); | |
2662 | ret = Fcons (load, ret); | |
2663 | } | |
daa37602 JB |
2664 | |
2665 | return ret; | |
2666 | } | |
7b863bd5 JB |
2667 | \f |
2668 | Lisp_Object Vfeatures; | |
2669 | ||
2670 | DEFUN ("featurep", Ffeaturep, Sfeaturep, 1, 1, 0, | |
2671 | "Returns t if FEATURE is present in this Emacs.\n\ | |
2672 | Use this to conditionalize execution of lisp code based on the presence or\n\ | |
2673 | absence of emacs or environment extensions.\n\ | |
2674 | Use `provide' to declare that a feature is available.\n\ | |
2675 | This function looks at the value of the variable `features'.") | |
b4f334f7 | 2676 | (feature) |
7b863bd5 JB |
2677 | Lisp_Object feature; |
2678 | { | |
2679 | register Lisp_Object tem; | |
2680 | CHECK_SYMBOL (feature, 0); | |
2681 | tem = Fmemq (feature, Vfeatures); | |
265a9e55 | 2682 | return (NILP (tem)) ? Qnil : Qt; |
7b863bd5 JB |
2683 | } |
2684 | ||
2685 | DEFUN ("provide", Fprovide, Sprovide, 1, 1, 0, | |
2686 | "Announce that FEATURE is a feature of the current Emacs.") | |
b4f334f7 | 2687 | (feature) |
7b863bd5 JB |
2688 | Lisp_Object feature; |
2689 | { | |
2690 | register Lisp_Object tem; | |
2691 | CHECK_SYMBOL (feature, 0); | |
265a9e55 | 2692 | if (!NILP (Vautoload_queue)) |
7b863bd5 JB |
2693 | Vautoload_queue = Fcons (Fcons (Vfeatures, Qnil), Vautoload_queue); |
2694 | tem = Fmemq (feature, Vfeatures); | |
265a9e55 | 2695 | if (NILP (tem)) |
7b863bd5 | 2696 | Vfeatures = Fcons (feature, Vfeatures); |
68732608 | 2697 | LOADHIST_ATTACH (Fcons (Qprovide, feature)); |
7b863bd5 JB |
2698 | return feature; |
2699 | } | |
2700 | ||
53d5acf5 | 2701 | DEFUN ("require", Frequire, Srequire, 1, 3, 0, |
7b863bd5 JB |
2702 | "If feature FEATURE is not loaded, load it from FILENAME.\n\ |
2703 | If FEATURE is not a member of the list `features', then the feature\n\ | |
2704 | is not loaded; so load the file FILENAME.\n\ | |
f0c030b3 | 2705 | If FILENAME is omitted, the printname of FEATURE is used as the file name,\n\ |
53d5acf5 RS |
2706 | but in this case `load' insists on adding the suffix `.el' or `.elc'.\n\ |
2707 | If the optional third argument NOERROR is non-nil,\n\ | |
2708 | then return nil if the file is not found.\n\ | |
2709 | Normally the return value is FEATURE.") | |
2710 | (feature, file_name, noerror) | |
2711 | Lisp_Object feature, file_name, noerror; | |
7b863bd5 JB |
2712 | { |
2713 | register Lisp_Object tem; | |
2714 | CHECK_SYMBOL (feature, 0); | |
2715 | tem = Fmemq (feature, Vfeatures); | |
68732608 | 2716 | LOADHIST_ATTACH (Fcons (Qrequire, feature)); |
265a9e55 | 2717 | if (NILP (tem)) |
7b863bd5 JB |
2718 | { |
2719 | int count = specpdl_ptr - specpdl; | |
2720 | ||
2721 | /* Value saved here is to be restored into Vautoload_queue */ | |
2722 | record_unwind_protect (un_autoload, Vautoload_queue); | |
2723 | Vautoload_queue = Qt; | |
2724 | ||
53d5acf5 RS |
2725 | tem = Fload (NILP (file_name) ? Fsymbol_name (feature) : file_name, |
2726 | noerror, Qt, Qnil, (NILP (file_name) ? Qt : Qnil)); | |
2727 | /* If load failed entirely, return nil. */ | |
2728 | if (NILP (tem)) | |
41857307 | 2729 | return unbind_to (count, Qnil); |
7b863bd5 JB |
2730 | |
2731 | tem = Fmemq (feature, Vfeatures); | |
265a9e55 | 2732 | if (NILP (tem)) |
7b863bd5 | 2733 | error ("Required feature %s was not provided", |
fdb5bec0 | 2734 | XSYMBOL (feature)->name->data); |
7b863bd5 JB |
2735 | |
2736 | /* Once loading finishes, don't undo it. */ | |
2737 | Vautoload_queue = Qt; | |
2738 | feature = unbind_to (count, feature); | |
2739 | } | |
2740 | return feature; | |
2741 | } | |
2742 | \f | |
b4f334f7 KH |
2743 | /* Primitives for work of the "widget" library. |
2744 | In an ideal world, this section would not have been necessary. | |
2745 | However, lisp function calls being as slow as they are, it turns | |
2746 | out that some functions in the widget library (wid-edit.el) are the | |
2747 | bottleneck of Widget operation. Here is their translation to C, | |
2748 | for the sole reason of efficiency. */ | |
2749 | ||
2750 | DEFUN ("widget-plist-member", Fwidget_plist_member, Swidget_plist_member, 2, 2, 0, | |
2751 | "Return non-nil if PLIST has the property PROP.\n\ | |
2752 | PLIST is a property list, which is a list of the form\n\ | |
2753 | \(PROP1 VALUE1 PROP2 VALUE2 ...\). PROP is a symbol.\n\ | |
2754 | Unlike `plist-get', this allows you to distinguish between a missing\n\ | |
2755 | property and a property with the value nil.\n\ | |
2756 | The value is actually the tail of PLIST whose car is PROP.") | |
2757 | (plist, prop) | |
2758 | Lisp_Object plist, prop; | |
2759 | { | |
2760 | while (CONSP (plist) && !EQ (XCAR (plist), prop)) | |
2761 | { | |
2762 | QUIT; | |
2763 | plist = XCDR (plist); | |
2764 | plist = CDR (plist); | |
2765 | } | |
2766 | return plist; | |
2767 | } | |
2768 | ||
2769 | DEFUN ("widget-put", Fwidget_put, Swidget_put, 3, 3, 0, | |
2770 | "In WIDGET, set PROPERTY to VALUE.\n\ | |
2771 | The value can later be retrieved with `widget-get'.") | |
2772 | (widget, property, value) | |
2773 | Lisp_Object widget, property, value; | |
2774 | { | |
2775 | CHECK_CONS (widget, 1); | |
2776 | XCDR (widget) = Fplist_put (XCDR (widget), property, value); | |
f7993597 | 2777 | return value; |
b4f334f7 KH |
2778 | } |
2779 | ||
2780 | DEFUN ("widget-get", Fwidget_get, Swidget_get, 2, 2, 0, | |
2781 | "In WIDGET, get the value of PROPERTY.\n\ | |
2782 | The value could either be specified when the widget was created, or\n\ | |
2783 | later with `widget-put'.") | |
2784 | (widget, property) | |
2785 | Lisp_Object widget, property; | |
2786 | { | |
2787 | Lisp_Object tmp; | |
2788 | ||
2789 | while (1) | |
2790 | { | |
2791 | if (NILP (widget)) | |
2792 | return Qnil; | |
2793 | CHECK_CONS (widget, 1); | |
2794 | tmp = Fwidget_plist_member (XCDR (widget), property); | |
2795 | if (CONSP (tmp)) | |
2796 | { | |
2797 | tmp = XCDR (tmp); | |
2798 | return CAR (tmp); | |
2799 | } | |
2800 | tmp = XCAR (widget); | |
2801 | if (NILP (tmp)) | |
2802 | return Qnil; | |
2803 | widget = Fget (tmp, Qwidget_type); | |
2804 | } | |
2805 | } | |
2806 | ||
2807 | DEFUN ("widget-apply", Fwidget_apply, Swidget_apply, 2, MANY, 0, | |
2808 | "Apply the value of WIDGET's PROPERTY to the widget itself.\n\ | |
2809 | ARGS are passed as extra arguments to the function.") | |
2810 | (nargs, args) | |
2811 | int nargs; | |
2812 | Lisp_Object *args; | |
2813 | { | |
2814 | /* This function can GC. */ | |
2815 | Lisp_Object newargs[3]; | |
2816 | struct gcpro gcpro1, gcpro2; | |
2817 | Lisp_Object result; | |
2818 | ||
2819 | newargs[0] = Fwidget_get (args[0], args[1]); | |
2820 | newargs[1] = args[0]; | |
2821 | newargs[2] = Flist (nargs - 2, args + 2); | |
2822 | GCPRO2 (newargs[0], newargs[2]); | |
2823 | result = Fapply (3, newargs); | |
2824 | UNGCPRO; | |
2825 | return result; | |
2826 | } | |
2827 | \f | |
24c129e4 KH |
2828 | /* base64 encode/decode functions. |
2829 | Based on code from GNU recode. */ | |
2830 | ||
2831 | #define MIME_LINE_LENGTH 76 | |
2832 | ||
2833 | #define IS_ASCII(Character) \ | |
2834 | ((Character) < 128) | |
2835 | #define IS_BASE64(Character) \ | |
2836 | (IS_ASCII (Character) && base64_char_to_value[Character] >= 0) | |
9a092df0 PF |
2837 | #define IS_BASE64_IGNORABLE(Character) \ |
2838 | ((Character) == ' ' || (Character) == '\t' || (Character) == '\n' \ | |
2839 | || (Character) == '\f' || (Character) == '\r') | |
2840 | ||
2841 | /* Used by base64_decode_1 to retrieve a non-base64-ignorable | |
2842 | character or return retval if there are no characters left to | |
2843 | process. */ | |
2844 | #define READ_QUADRUPLET_BYTE(retval) \ | |
2845 | do \ | |
2846 | { \ | |
2847 | if (i == length) \ | |
2848 | return (retval); \ | |
2849 | c = from[i++]; \ | |
2850 | } \ | |
2851 | while (IS_BASE64_IGNORABLE (c)) | |
24c129e4 | 2852 | |
4b2e75e6 EZ |
2853 | /* Don't use alloca for regions larger than this, lest we overflow |
2854 | their stack. */ | |
2855 | #define MAX_ALLOCA 16*1024 | |
2856 | ||
24c129e4 KH |
2857 | /* Table of characters coding the 64 values. */ |
2858 | static char base64_value_to_char[64] = | |
2859 | { | |
2860 | 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', /* 0- 9 */ | |
2861 | 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', /* 10-19 */ | |
2862 | 'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', /* 20-29 */ | |
2863 | 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', /* 30-39 */ | |
2864 | 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', /* 40-49 */ | |
2865 | 'y', 'z', '0', '1', '2', '3', '4', '5', '6', '7', /* 50-59 */ | |
2866 | '8', '9', '+', '/' /* 60-63 */ | |
2867 | }; | |
2868 | ||
2869 | /* Table of base64 values for first 128 characters. */ | |
2870 | static short base64_char_to_value[128] = | |
2871 | { | |
2872 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0- 9 */ | |
2873 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 10- 19 */ | |
2874 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 20- 29 */ | |
2875 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 30- 39 */ | |
2876 | -1, -1, -1, 62, -1, -1, -1, 63, 52, 53, /* 40- 49 */ | |
2877 | 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, /* 50- 59 */ | |
2878 | -1, -1, -1, -1, -1, 0, 1, 2, 3, 4, /* 60- 69 */ | |
2879 | 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, /* 70- 79 */ | |
2880 | 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, /* 80- 89 */ | |
2881 | 25, -1, -1, -1, -1, -1, -1, 26, 27, 28, /* 90- 99 */ | |
2882 | 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, /* 100-109 */ | |
2883 | 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, /* 110-119 */ | |
2884 | 49, 50, 51, -1, -1, -1, -1, -1 /* 120-127 */ | |
2885 | }; | |
2886 | ||
2887 | /* The following diagram shows the logical steps by which three octets | |
2888 | get transformed into four base64 characters. | |
2889 | ||
2890 | .--------. .--------. .--------. | |
2891 | |aaaaaabb| |bbbbcccc| |ccdddddd| | |
2892 | `--------' `--------' `--------' | |
2893 | 6 2 4 4 2 6 | |
2894 | .--------+--------+--------+--------. | |
2895 | |00aaaaaa|00bbbbbb|00cccccc|00dddddd| | |
2896 | `--------+--------+--------+--------' | |
2897 | ||
2898 | .--------+--------+--------+--------. | |
2899 | |AAAAAAAA|BBBBBBBB|CCCCCCCC|DDDDDDDD| | |
2900 | `--------+--------+--------+--------' | |
2901 | ||
2902 | The octets are divided into 6 bit chunks, which are then encoded into | |
2903 | base64 characters. */ | |
2904 | ||
2905 | ||
2906 | static int base64_encode_1 P_ ((const char *, char *, int, int)); | |
2907 | static int base64_decode_1 P_ ((const char *, char *, int)); | |
2908 | ||
2909 | DEFUN ("base64-encode-region", Fbase64_encode_region, Sbase64_encode_region, | |
2910 | 2, 3, "r", | |
46ac5b26 | 2911 | "Base64-encode the region between BEG and END.\n\ |
15a9a50c | 2912 | Return the length of the encoded text.\n\ |
24c129e4 KH |
2913 | Optional third argument NO-LINE-BREAK means do not break long lines\n\ |
2914 | into shorter lines.") | |
2915 | (beg, end, no_line_break) | |
2916 | Lisp_Object beg, end, no_line_break; | |
2917 | { | |
2918 | char *encoded; | |
2919 | int allength, length; | |
2920 | int ibeg, iend, encoded_length; | |
2921 | int old_pos = PT; | |
2922 | ||
2923 | validate_region (&beg, &end); | |
2924 | ||
2925 | ibeg = CHAR_TO_BYTE (XFASTINT (beg)); | |
2926 | iend = CHAR_TO_BYTE (XFASTINT (end)); | |
2927 | move_gap_both (XFASTINT (beg), ibeg); | |
2928 | ||
2929 | /* We need to allocate enough room for encoding the text. | |
2930 | We need 33 1/3% more space, plus a newline every 76 | |
2931 | characters, and then we round up. */ | |
2932 | length = iend - ibeg; | |
2933 | allength = length + length/3 + 1; | |
2934 | allength += allength / MIME_LINE_LENGTH + 1 + 6; | |
2935 | ||
4b2e75e6 EZ |
2936 | if (allength <= MAX_ALLOCA) |
2937 | encoded = (char *) alloca (allength); | |
2938 | else | |
2939 | encoded = (char *) xmalloc (allength); | |
24c129e4 KH |
2940 | encoded_length = base64_encode_1 (BYTE_POS_ADDR (ibeg), encoded, length, |
2941 | NILP (no_line_break)); | |
2942 | if (encoded_length > allength) | |
2943 | abort (); | |
2944 | ||
2945 | /* Now we have encoded the region, so we insert the new contents | |
2946 | and delete the old. (Insert first in order to preserve markers.) */ | |
8b835738 | 2947 | SET_PT_BOTH (XFASTINT (beg), ibeg); |
24c129e4 | 2948 | insert (encoded, encoded_length); |
4b2e75e6 | 2949 | if (allength > MAX_ALLOCA) |
8c217645 | 2950 | xfree (encoded); |
24c129e4 KH |
2951 | del_range_byte (ibeg + encoded_length, iend + encoded_length, 1); |
2952 | ||
2953 | /* If point was outside of the region, restore it exactly; else just | |
2954 | move to the beginning of the region. */ | |
2955 | if (old_pos >= XFASTINT (end)) | |
2956 | old_pos += encoded_length - (XFASTINT (end) - XFASTINT (beg)); | |
8b835738 AS |
2957 | else if (old_pos > XFASTINT (beg)) |
2958 | old_pos = XFASTINT (beg); | |
24c129e4 KH |
2959 | SET_PT (old_pos); |
2960 | ||
2961 | /* We return the length of the encoded text. */ | |
2962 | return make_number (encoded_length); | |
2963 | } | |
2964 | ||
2965 | DEFUN ("base64-encode-string", Fbase64_encode_string, Sbase64_encode_string, | |
c22554ac KH |
2966 | 1, 2, 0, |
2967 | "Base64-encode STRING and return the result.\n\ | |
2968 | Optional second argument NO-LINE-BREAK means do not break long lines\n\ | |
2969 | into shorter lines.") | |
2970 | (string, no_line_break) | |
915b8312 | 2971 | Lisp_Object string, no_line_break; |
24c129e4 KH |
2972 | { |
2973 | int allength, length, encoded_length; | |
2974 | char *encoded; | |
4b2e75e6 | 2975 | Lisp_Object encoded_string; |
24c129e4 KH |
2976 | |
2977 | CHECK_STRING (string, 1); | |
2978 | ||
7f8a0840 KH |
2979 | /* We need to allocate enough room for encoding the text. |
2980 | We need 33 1/3% more space, plus a newline every 76 | |
2981 | characters, and then we round up. */ | |
24c129e4 | 2982 | length = STRING_BYTES (XSTRING (string)); |
7f8a0840 KH |
2983 | allength = length + length/3 + 1; |
2984 | allength += allength / MIME_LINE_LENGTH + 1 + 6; | |
24c129e4 KH |
2985 | |
2986 | /* We need to allocate enough room for decoding the text. */ | |
4b2e75e6 EZ |
2987 | if (allength <= MAX_ALLOCA) |
2988 | encoded = (char *) alloca (allength); | |
2989 | else | |
2990 | encoded = (char *) xmalloc (allength); | |
24c129e4 KH |
2991 | |
2992 | encoded_length = base64_encode_1 (XSTRING (string)->data, | |
c22554ac | 2993 | encoded, length, NILP (no_line_break)); |
24c129e4 KH |
2994 | if (encoded_length > allength) |
2995 | abort (); | |
2996 | ||
4b2e75e6 EZ |
2997 | encoded_string = make_unibyte_string (encoded, encoded_length); |
2998 | if (allength > MAX_ALLOCA) | |
8c217645 | 2999 | xfree (encoded); |
4b2e75e6 EZ |
3000 | |
3001 | return encoded_string; | |
24c129e4 KH |
3002 | } |
3003 | ||
3004 | static int | |
3005 | base64_encode_1 (from, to, length, line_break) | |
3006 | const char *from; | |
3007 | char *to; | |
3008 | int length; | |
3009 | int line_break; | |
3010 | { | |
3011 | int counter = 0, i = 0; | |
3012 | char *e = to; | |
3013 | unsigned char c; | |
3014 | unsigned int value; | |
3015 | ||
3016 | while (i < length) | |
3017 | { | |
3018 | c = from[i++]; | |
3019 | ||
3020 | /* Wrap line every 76 characters. */ | |
3021 | ||
3022 | if (line_break) | |
3023 | { | |
3024 | if (counter < MIME_LINE_LENGTH / 4) | |
3025 | counter++; | |
3026 | else | |
3027 | { | |
3028 | *e++ = '\n'; | |
3029 | counter = 1; | |
3030 | } | |
3031 | } | |
3032 | ||
3033 | /* Process first byte of a triplet. */ | |
3034 | ||
3035 | *e++ = base64_value_to_char[0x3f & c >> 2]; | |
3036 | value = (0x03 & c) << 4; | |
3037 | ||
3038 | /* Process second byte of a triplet. */ | |
3039 | ||
3040 | if (i == length) | |
3041 | { | |
3042 | *e++ = base64_value_to_char[value]; | |
3043 | *e++ = '='; | |
3044 | *e++ = '='; | |
3045 | break; | |
3046 | } | |
3047 | ||
3048 | c = from[i++]; | |
3049 | ||
3050 | *e++ = base64_value_to_char[value | (0x0f & c >> 4)]; | |
3051 | value = (0x0f & c) << 2; | |
3052 | ||
3053 | /* Process third byte of a triplet. */ | |
3054 | ||
3055 | if (i == length) | |
3056 | { | |
3057 | *e++ = base64_value_to_char[value]; | |
3058 | *e++ = '='; | |
3059 | break; | |
3060 | } | |
3061 | ||
3062 | c = from[i++]; | |
3063 | ||
3064 | *e++ = base64_value_to_char[value | (0x03 & c >> 6)]; | |
3065 | *e++ = base64_value_to_char[0x3f & c]; | |
3066 | } | |
3067 | ||
24c129e4 KH |
3068 | return e - to; |
3069 | } | |
3070 | ||
3071 | ||
3072 | DEFUN ("base64-decode-region", Fbase64_decode_region, Sbase64_decode_region, | |
3073 | 2, 2, "r", | |
46ac5b26 | 3074 | "Base64-decode the region between BEG and END.\n\ |
15a9a50c | 3075 | Return the length of the decoded text.\n\ |
24c129e4 KH |
3076 | If the region can't be decoded, return nil and don't modify the buffer.") |
3077 | (beg, end) | |
3078 | Lisp_Object beg, end; | |
3079 | { | |
3080 | int ibeg, iend, length; | |
3081 | char *decoded; | |
3082 | int old_pos = PT; | |
3083 | int decoded_length; | |
9b703a38 | 3084 | int inserted_chars; |
24c129e4 KH |
3085 | |
3086 | validate_region (&beg, &end); | |
3087 | ||
3088 | ibeg = CHAR_TO_BYTE (XFASTINT (beg)); | |
3089 | iend = CHAR_TO_BYTE (XFASTINT (end)); | |
3090 | ||
3091 | length = iend - ibeg; | |
3092 | /* We need to allocate enough room for decoding the text. */ | |
4b2e75e6 EZ |
3093 | if (length <= MAX_ALLOCA) |
3094 | decoded = (char *) alloca (length); | |
3095 | else | |
3096 | decoded = (char *) xmalloc (length); | |
24c129e4 KH |
3097 | |
3098 | move_gap_both (XFASTINT (beg), ibeg); | |
3099 | decoded_length = base64_decode_1 (BYTE_POS_ADDR (ibeg), decoded, length); | |
3100 | if (decoded_length > length) | |
3101 | abort (); | |
3102 | ||
3103 | if (decoded_length < 0) | |
8c217645 KH |
3104 | { |
3105 | /* The decoding wasn't possible. */ | |
3106 | if (length > MAX_ALLOCA) | |
3107 | xfree (decoded); | |
3108 | return Qnil; | |
3109 | } | |
24c129e4 KH |
3110 | |
3111 | /* Now we have decoded the region, so we insert the new contents | |
3112 | and delete the old. (Insert first in order to preserve markers.) */ | |
9b703a38 KH |
3113 | /* We insert two spaces, then insert the decoded text in between |
3114 | them, at last, delete those extra two spaces. This is to avoid | |
922dfd86 | 3115 | byte combining while inserting. */ |
9b703a38 KH |
3116 | TEMP_SET_PT_BOTH (XFASTINT (beg), ibeg); |
3117 | insert_1_both (" ", 2, 2, 0, 1, 0); | |
3118 | TEMP_SET_PT_BOTH (XFASTINT (beg) + 1, ibeg + 1); | |
24c129e4 | 3119 | insert (decoded, decoded_length); |
9b703a38 | 3120 | inserted_chars = PT - (XFASTINT (beg) + 1); |
4b2e75e6 | 3121 | if (length > MAX_ALLOCA) |
8c217645 | 3122 | xfree (decoded); |
922dfd86 KH |
3123 | /* At first delete the original text. This never cause byte |
3124 | combining. */ | |
3125 | del_range_both (PT + 1, PT_BYTE + 1, XFASTINT (end) + inserted_chars + 2, | |
9b703a38 | 3126 | iend + decoded_length + 2, 1); |
922dfd86 KH |
3127 | /* Next delete the extra spaces. This will cause byte combining |
3128 | error. */ | |
3129 | del_range_both (PT, PT_BYTE, PT + 1, PT_BYTE + 1, 0); | |
3130 | del_range_both (XFASTINT (beg), ibeg, XFASTINT (beg) + 1, ibeg + 1, 0); | |
9b703a38 | 3131 | inserted_chars = PT - XFASTINT (beg); |
24c129e4 KH |
3132 | |
3133 | /* If point was outside of the region, restore it exactly; else just | |
3134 | move to the beginning of the region. */ | |
3135 | if (old_pos >= XFASTINT (end)) | |
9b703a38 KH |
3136 | old_pos += inserted_chars - (XFASTINT (end) - XFASTINT (beg)); |
3137 | else if (old_pos > XFASTINT (beg)) | |
3138 | old_pos = XFASTINT (beg); | |
e52ad9c9 | 3139 | SET_PT (old_pos > ZV ? ZV : old_pos); |
24c129e4 | 3140 | |
9b703a38 | 3141 | return make_number (inserted_chars); |
24c129e4 KH |
3142 | } |
3143 | ||
3144 | DEFUN ("base64-decode-string", Fbase64_decode_string, Sbase64_decode_string, | |
3145 | 1, 1, 0, | |
46ac5b26 | 3146 | "Base64-decode STRING and return the result.") |
24c129e4 KH |
3147 | (string) |
3148 | Lisp_Object string; | |
3149 | { | |
3150 | char *decoded; | |
3151 | int length, decoded_length; | |
4b2e75e6 | 3152 | Lisp_Object decoded_string; |
24c129e4 KH |
3153 | |
3154 | CHECK_STRING (string, 1); | |
3155 | ||
3156 | length = STRING_BYTES (XSTRING (string)); | |
3157 | /* We need to allocate enough room for decoding the text. */ | |
4b2e75e6 EZ |
3158 | if (length <= MAX_ALLOCA) |
3159 | decoded = (char *) alloca (length); | |
3160 | else | |
3161 | decoded = (char *) xmalloc (length); | |
24c129e4 KH |
3162 | |
3163 | decoded_length = base64_decode_1 (XSTRING (string)->data, decoded, length); | |
3164 | if (decoded_length > length) | |
3165 | abort (); | |
3166 | ||
3167 | if (decoded_length < 0) | |
8c217645 KH |
3168 | /* The decoding wasn't possible. */ |
3169 | decoded_string = Qnil; | |
3170 | else | |
3171 | decoded_string = make_string (decoded, decoded_length); | |
24c129e4 | 3172 | |
4b2e75e6 | 3173 | if (length > MAX_ALLOCA) |
8c217645 | 3174 | xfree (decoded); |
4b2e75e6 EZ |
3175 | |
3176 | return decoded_string; | |
24c129e4 KH |
3177 | } |
3178 | ||
3179 | static int | |
3180 | base64_decode_1 (from, to, length) | |
3181 | const char *from; | |
3182 | char *to; | |
3183 | int length; | |
3184 | { | |
9a092df0 | 3185 | int i = 0; |
24c129e4 KH |
3186 | char *e = to; |
3187 | unsigned char c; | |
3188 | unsigned long value; | |
3189 | ||
9a092df0 | 3190 | while (1) |
24c129e4 | 3191 | { |
9a092df0 | 3192 | /* Process first byte of a quadruplet. */ |
24c129e4 | 3193 | |
9a092df0 | 3194 | READ_QUADRUPLET_BYTE (e-to); |
24c129e4 KH |
3195 | |
3196 | if (!IS_BASE64 (c)) | |
3197 | return -1; | |
3198 | value = base64_char_to_value[c] << 18; | |
3199 | ||
3200 | /* Process second byte of a quadruplet. */ | |
3201 | ||
9a092df0 | 3202 | READ_QUADRUPLET_BYTE (-1); |
24c129e4 KH |
3203 | |
3204 | if (!IS_BASE64 (c)) | |
3205 | return -1; | |
3206 | value |= base64_char_to_value[c] << 12; | |
3207 | ||
3208 | *e++ = (unsigned char) (value >> 16); | |
3209 | ||
3210 | /* Process third byte of a quadruplet. */ | |
9a092df0 PF |
3211 | |
3212 | READ_QUADRUPLET_BYTE (-1); | |
24c129e4 KH |
3213 | |
3214 | if (c == '=') | |
3215 | { | |
9a092df0 PF |
3216 | READ_QUADRUPLET_BYTE (-1); |
3217 | ||
24c129e4 KH |
3218 | if (c != '=') |
3219 | return -1; | |
3220 | continue; | |
3221 | } | |
3222 | ||
3223 | if (!IS_BASE64 (c)) | |
3224 | return -1; | |
3225 | value |= base64_char_to_value[c] << 6; | |
3226 | ||
3227 | *e++ = (unsigned char) (0xff & value >> 8); | |
3228 | ||
3229 | /* Process fourth byte of a quadruplet. */ | |
3230 | ||
9a092df0 | 3231 | READ_QUADRUPLET_BYTE (-1); |
24c129e4 KH |
3232 | |
3233 | if (c == '=') | |
3234 | continue; | |
3235 | ||
3236 | if (!IS_BASE64 (c)) | |
3237 | return -1; | |
3238 | value |= base64_char_to_value[c]; | |
3239 | ||
3240 | *e++ = (unsigned char) (0xff & value); | |
3241 | } | |
24c129e4 | 3242 | } |
d80c6c11 GM |
3243 | |
3244 | ||
3245 | \f | |
3246 | /*********************************************************************** | |
3247 | ***** ***** | |
3248 | ***** Hash Tables ***** | |
3249 | ***** ***** | |
3250 | ***********************************************************************/ | |
3251 | ||
3252 | /* Implemented by gerd@gnu.org. This hash table implementation was | |
3253 | inspired by CMUCL hash tables. */ | |
3254 | ||
3255 | /* Ideas: | |
3256 | ||
3257 | 1. For small tables, association lists are probably faster than | |
3258 | hash tables because they have lower overhead. | |
3259 | ||
3260 | For uses of hash tables where the O(1) behavior of table | |
3261 | operations is not a requirement, it might therefore be a good idea | |
3262 | not to hash. Instead, we could just do a linear search in the | |
3263 | key_and_value vector of the hash table. This could be done | |
3264 | if a `:linear-search t' argument is given to make-hash-table. */ | |
3265 | ||
3266 | ||
3267 | /* Return the contents of vector V at index IDX. */ | |
3268 | ||
3269 | #define AREF(V, IDX) XVECTOR (V)->contents[IDX] | |
3270 | ||
3271 | /* Value is the key part of entry IDX in hash table H. */ | |
3272 | ||
3273 | #define HASH_KEY(H, IDX) AREF ((H)->key_and_value, 2 * (IDX)) | |
3274 | ||
3275 | /* Value is the value part of entry IDX in hash table H. */ | |
3276 | ||
3277 | #define HASH_VALUE(H, IDX) AREF ((H)->key_and_value, 2 * (IDX) + 1) | |
3278 | ||
3279 | /* Value is the index of the next entry following the one at IDX | |
3280 | in hash table H. */ | |
3281 | ||
3282 | #define HASH_NEXT(H, IDX) AREF ((H)->next, (IDX)) | |
3283 | ||
3284 | /* Value is the hash code computed for entry IDX in hash table H. */ | |
3285 | ||
3286 | #define HASH_HASH(H, IDX) AREF ((H)->hash, (IDX)) | |
3287 | ||
3288 | /* Value is the index of the element in hash table H that is the | |
3289 | start of the collision list at index IDX in the index vector of H. */ | |
3290 | ||
3291 | #define HASH_INDEX(H, IDX) AREF ((H)->index, (IDX)) | |
3292 | ||
3293 | /* Value is the size of hash table H. */ | |
3294 | ||
3295 | #define HASH_TABLE_SIZE(H) XVECTOR ((H)->next)->size | |
3296 | ||
3297 | /* The list of all weak hash tables. Don't staticpro this one. */ | |
3298 | ||
3299 | Lisp_Object Vweak_hash_tables; | |
3300 | ||
3301 | /* Various symbols. */ | |
3302 | ||
f899c503 | 3303 | Lisp_Object Qhash_table_p, Qeq, Qeql, Qequal, Qkey, Qvalue; |
ee0403b3 | 3304 | Lisp_Object QCtest, QCsize, QCrehash_size, QCrehash_threshold, QCweakness; |
d80c6c11 GM |
3305 | Lisp_Object Qhash_table_test; |
3306 | ||
3307 | /* Function prototypes. */ | |
3308 | ||
3309 | static struct Lisp_Hash_Table *check_hash_table P_ ((Lisp_Object)); | |
3310 | static int next_almost_prime P_ ((int)); | |
3311 | static int get_key_arg P_ ((Lisp_Object, int, Lisp_Object *, char *)); | |
3312 | static Lisp_Object larger_vector P_ ((Lisp_Object, int, Lisp_Object)); | |
3313 | static void maybe_resize_hash_table P_ ((struct Lisp_Hash_Table *)); | |
d80c6c11 GM |
3314 | static int cmpfn_eql P_ ((struct Lisp_Hash_Table *, Lisp_Object, unsigned, |
3315 | Lisp_Object, unsigned)); | |
3316 | static int cmpfn_equal P_ ((struct Lisp_Hash_Table *, Lisp_Object, unsigned, | |
3317 | Lisp_Object, unsigned)); | |
3318 | static int cmpfn_user_defined P_ ((struct Lisp_Hash_Table *, Lisp_Object, | |
3319 | unsigned, Lisp_Object, unsigned)); | |
3320 | static unsigned hashfn_eq P_ ((struct Lisp_Hash_Table *, Lisp_Object)); | |
3321 | static unsigned hashfn_eql P_ ((struct Lisp_Hash_Table *, Lisp_Object)); | |
3322 | static unsigned hashfn_equal P_ ((struct Lisp_Hash_Table *, Lisp_Object)); | |
3323 | static unsigned hashfn_user_defined P_ ((struct Lisp_Hash_Table *, | |
3324 | Lisp_Object)); | |
3325 | static unsigned sxhash_string P_ ((unsigned char *, int)); | |
3326 | static unsigned sxhash_list P_ ((Lisp_Object, int)); | |
3327 | static unsigned sxhash_vector P_ ((Lisp_Object, int)); | |
3328 | static unsigned sxhash_bool_vector P_ ((Lisp_Object)); | |
3329 | ||
3330 | ||
3331 | \f | |
3332 | /*********************************************************************** | |
3333 | Utilities | |
3334 | ***********************************************************************/ | |
3335 | ||
3336 | /* If OBJ is a Lisp hash table, return a pointer to its struct | |
3337 | Lisp_Hash_Table. Otherwise, signal an error. */ | |
3338 | ||
3339 | static struct Lisp_Hash_Table * | |
3340 | check_hash_table (obj) | |
3341 | Lisp_Object obj; | |
3342 | { | |
3343 | CHECK_HASH_TABLE (obj, 0); | |
3344 | return XHASH_TABLE (obj); | |
3345 | } | |
3346 | ||
3347 | ||
3348 | /* Value is the next integer I >= N, N >= 0 which is "almost" a prime | |
3349 | number. */ | |
3350 | ||
3351 | static int | |
3352 | next_almost_prime (n) | |
3353 | int n; | |
3354 | { | |
3355 | if (n % 2 == 0) | |
3356 | n += 1; | |
3357 | if (n % 3 == 0) | |
3358 | n += 2; | |
3359 | if (n % 7 == 0) | |
3360 | n += 4; | |
3361 | return n; | |
3362 | } | |
3363 | ||
3364 | ||
3365 | /* Find KEY in ARGS which has size NARGS. Don't consider indices for | |
3366 | which USED[I] is non-zero. If found at index I in ARGS, set | |
3367 | USED[I] and USED[I + 1] to 1, and return I + 1. Otherwise return | |
3368 | -1. This function is used to extract a keyword/argument pair from | |
3369 | a DEFUN parameter list. */ | |
3370 | ||
3371 | static int | |
3372 | get_key_arg (key, nargs, args, used) | |
3373 | Lisp_Object key; | |
3374 | int nargs; | |
3375 | Lisp_Object *args; | |
3376 | char *used; | |
3377 | { | |
3378 | int i; | |
3379 | ||
3380 | for (i = 0; i < nargs - 1; ++i) | |
3381 | if (!used[i] && EQ (args[i], key)) | |
3382 | break; | |
3383 | ||
3384 | if (i >= nargs - 1) | |
3385 | i = -1; | |
3386 | else | |
3387 | { | |
3388 | used[i++] = 1; | |
3389 | used[i] = 1; | |
3390 | } | |
3391 | ||
3392 | return i; | |
3393 | } | |
3394 | ||
3395 | ||
3396 | /* Return a Lisp vector which has the same contents as VEC but has | |
3397 | size NEW_SIZE, NEW_SIZE >= VEC->size. Entries in the resulting | |
3398 | vector that are not copied from VEC are set to INIT. */ | |
3399 | ||
3400 | static Lisp_Object | |
3401 | larger_vector (vec, new_size, init) | |
3402 | Lisp_Object vec; | |
3403 | int new_size; | |
3404 | Lisp_Object init; | |
3405 | { | |
3406 | struct Lisp_Vector *v; | |
3407 | int i, old_size; | |
3408 | ||
3409 | xassert (VECTORP (vec)); | |
3410 | old_size = XVECTOR (vec)->size; | |
3411 | xassert (new_size >= old_size); | |
3412 | ||
3413 | v = allocate_vectorlike (new_size); | |
3414 | v->size = new_size; | |
3415 | bcopy (XVECTOR (vec)->contents, v->contents, | |
3416 | old_size * sizeof *v->contents); | |
3417 | for (i = old_size; i < new_size; ++i) | |
3418 | v->contents[i] = init; | |
3419 | XSETVECTOR (vec, v); | |
3420 | return vec; | |
3421 | } | |
3422 | ||
3423 | ||
3424 | /*********************************************************************** | |
3425 | Low-level Functions | |
3426 | ***********************************************************************/ | |
3427 | ||
d80c6c11 GM |
3428 | /* Compare KEY1 which has hash code HASH1 and KEY2 with hash code |
3429 | HASH2 in hash table H using `eql'. Value is non-zero if KEY1 and | |
3430 | KEY2 are the same. */ | |
3431 | ||
3432 | static int | |
3433 | cmpfn_eql (h, key1, hash1, key2, hash2) | |
3434 | struct Lisp_Hash_Table *h; | |
3435 | Lisp_Object key1, key2; | |
3436 | unsigned hash1, hash2; | |
3437 | { | |
2e5da676 GM |
3438 | return (FLOATP (key1) |
3439 | && FLOATP (key2) | |
e84b1dea | 3440 | && XFLOAT_DATA (key1) == XFLOAT_DATA (key2)); |
d80c6c11 GM |
3441 | } |
3442 | ||
3443 | ||
3444 | /* Compare KEY1 which has hash code HASH1 and KEY2 with hash code | |
3445 | HASH2 in hash table H using `equal'. Value is non-zero if KEY1 and | |
3446 | KEY2 are the same. */ | |
3447 | ||
3448 | static int | |
3449 | cmpfn_equal (h, key1, hash1, key2, hash2) | |
3450 | struct Lisp_Hash_Table *h; | |
3451 | Lisp_Object key1, key2; | |
3452 | unsigned hash1, hash2; | |
3453 | { | |
2e5da676 | 3454 | return hash1 == hash2 && !NILP (Fequal (key1, key2)); |
d80c6c11 GM |
3455 | } |
3456 | ||
3457 | ||
3458 | /* Compare KEY1 which has hash code HASH1, and KEY2 with hash code | |
3459 | HASH2 in hash table H using H->user_cmp_function. Value is non-zero | |
3460 | if KEY1 and KEY2 are the same. */ | |
3461 | ||
3462 | static int | |
3463 | cmpfn_user_defined (h, key1, hash1, key2, hash2) | |
3464 | struct Lisp_Hash_Table *h; | |
3465 | Lisp_Object key1, key2; | |
3466 | unsigned hash1, hash2; | |
3467 | { | |
3468 | if (hash1 == hash2) | |
3469 | { | |
3470 | Lisp_Object args[3]; | |
3471 | ||
3472 | args[0] = h->user_cmp_function; | |
3473 | args[1] = key1; | |
3474 | args[2] = key2; | |
3475 | return !NILP (Ffuncall (3, args)); | |
3476 | } | |
3477 | else | |
3478 | return 0; | |
3479 | } | |
3480 | ||
3481 | ||
3482 | /* Value is a hash code for KEY for use in hash table H which uses | |
3483 | `eq' to compare keys. The hash code returned is guaranteed to fit | |
3484 | in a Lisp integer. */ | |
3485 | ||
3486 | static unsigned | |
3487 | hashfn_eq (h, key) | |
3488 | struct Lisp_Hash_Table *h; | |
3489 | Lisp_Object key; | |
3490 | { | |
3491 | /* Lisp strings can change their address. Don't try to compute a | |
3492 | hash code for a string from its address. */ | |
3493 | if (STRINGP (key)) | |
3494 | return sxhash_string (XSTRING (key)->data, XSTRING (key)->size); | |
3495 | else | |
3496 | return XUINT (key) ^ XGCTYPE (key); | |
3497 | } | |
3498 | ||
3499 | ||
3500 | /* Value is a hash code for KEY for use in hash table H which uses | |
3501 | `eql' to compare keys. The hash code returned is guaranteed to fit | |
3502 | in a Lisp integer. */ | |
3503 | ||
3504 | static unsigned | |
3505 | hashfn_eql (h, key) | |
3506 | struct Lisp_Hash_Table *h; | |
3507 | Lisp_Object key; | |
3508 | { | |
3509 | /* Lisp strings can change their address. Don't try to compute a | |
3510 | hash code for a string from its address. */ | |
3511 | if (STRINGP (key)) | |
3512 | return sxhash_string (XSTRING (key)->data, XSTRING (key)->size); | |
3513 | else if (FLOATP (key)) | |
3514 | return sxhash (key, 0); | |
3515 | else | |
3516 | return XUINT (key) ^ XGCTYPE (key); | |
3517 | } | |
3518 | ||
3519 | ||
3520 | /* Value is a hash code for KEY for use in hash table H which uses | |
3521 | `equal' to compare keys. The hash code returned is guaranteed to fit | |
3522 | in a Lisp integer. */ | |
3523 | ||
3524 | static unsigned | |
3525 | hashfn_equal (h, key) | |
3526 | struct Lisp_Hash_Table *h; | |
3527 | Lisp_Object key; | |
3528 | { | |
3529 | return sxhash (key, 0); | |
3530 | } | |
3531 | ||
3532 | ||
3533 | /* Value is a hash code for KEY for use in hash table H which uses as | |
3534 | user-defined function to compare keys. The hash code returned is | |
3535 | guaranteed to fit in a Lisp integer. */ | |
3536 | ||
3537 | static unsigned | |
3538 | hashfn_user_defined (h, key) | |
3539 | struct Lisp_Hash_Table *h; | |
3540 | Lisp_Object key; | |
3541 | { | |
3542 | Lisp_Object args[2], hash; | |
3543 | ||
3544 | args[0] = h->user_hash_function; | |
3545 | args[1] = key; | |
3546 | hash = Ffuncall (2, args); | |
3547 | if (!INTEGERP (hash)) | |
3548 | Fsignal (Qerror, | |
3549 | list2 (build_string ("Illegal hash code returned from \ | |
3550 | user-supplied hash function"), | |
3551 | hash)); | |
3552 | return XUINT (hash); | |
3553 | } | |
3554 | ||
3555 | ||
3556 | /* Create and initialize a new hash table. | |
3557 | ||
3558 | TEST specifies the test the hash table will use to compare keys. | |
3559 | It must be either one of the predefined tests `eq', `eql' or | |
3560 | `equal' or a symbol denoting a user-defined test named TEST with | |
3561 | test and hash functions USER_TEST and USER_HASH. | |
3562 | ||
3563 | Give the table initial capacity SIZE, SIZE > 0, an integer. | |
3564 | ||
3565 | If REHASH_SIZE is an integer, it must be > 0, and this hash table's | |
3566 | new size when it becomes full is computed by adding REHASH_SIZE to | |
3567 | its old size. If REHASH_SIZE is a float, it must be > 1.0, and the | |
3568 | table's new size is computed by multiplying its old size with | |
3569 | REHASH_SIZE. | |
3570 | ||
3571 | REHASH_THRESHOLD must be a float <= 1.0, and > 0. The table will | |
3572 | be resized when the ratio of (number of entries in the table) / | |
3573 | (table size) is >= REHASH_THRESHOLD. | |
3574 | ||
3575 | WEAK specifies the weakness of the table. If non-nil, it must be | |
f899c503 | 3576 | one of the symbols `key', `value' or t. */ |
d80c6c11 GM |
3577 | |
3578 | Lisp_Object | |
3579 | make_hash_table (test, size, rehash_size, rehash_threshold, weak, | |
3580 | user_test, user_hash) | |
3581 | Lisp_Object test, size, rehash_size, rehash_threshold, weak; | |
3582 | Lisp_Object user_test, user_hash; | |
3583 | { | |
3584 | struct Lisp_Hash_Table *h; | |
3585 | struct Lisp_Vector *v; | |
3586 | Lisp_Object table; | |
3587 | int index_size, i, len, sz; | |
3588 | ||
3589 | /* Preconditions. */ | |
3590 | xassert (SYMBOLP (test)); | |
3591 | xassert (INTEGERP (size) && XINT (size) > 0); | |
3592 | xassert ((INTEGERP (rehash_size) && XINT (rehash_size) > 0) | |
3593 | || (FLOATP (rehash_size) && XFLOATINT (rehash_size) > 1.0)); | |
3594 | xassert (FLOATP (rehash_threshold) | |
3595 | && XFLOATINT (rehash_threshold) > 0 | |
3596 | && XFLOATINT (rehash_threshold) <= 1.0); | |
3597 | ||
3598 | /* Allocate a vector, and initialize it. */ | |
3599 | len = VECSIZE (struct Lisp_Hash_Table); | |
3600 | v = allocate_vectorlike (len); | |
3601 | v->size = len; | |
3602 | for (i = 0; i < len; ++i) | |
3603 | v->contents[i] = Qnil; | |
3604 | ||
3605 | /* Initialize hash table slots. */ | |
3606 | sz = XFASTINT (size); | |
3607 | h = (struct Lisp_Hash_Table *) v; | |
3608 | ||
3609 | h->test = test; | |
3610 | if (EQ (test, Qeql)) | |
3611 | { | |
3612 | h->cmpfn = cmpfn_eql; | |
3613 | h->hashfn = hashfn_eql; | |
3614 | } | |
3615 | else if (EQ (test, Qeq)) | |
3616 | { | |
2e5da676 | 3617 | h->cmpfn = NULL; |
d80c6c11 GM |
3618 | h->hashfn = hashfn_eq; |
3619 | } | |
3620 | else if (EQ (test, Qequal)) | |
3621 | { | |
3622 | h->cmpfn = cmpfn_equal; | |
3623 | h->hashfn = hashfn_equal; | |
3624 | } | |
3625 | else | |
3626 | { | |
3627 | h->user_cmp_function = user_test; | |
3628 | h->user_hash_function = user_hash; | |
3629 | h->cmpfn = cmpfn_user_defined; | |
3630 | h->hashfn = hashfn_user_defined; | |
3631 | } | |
3632 | ||
3633 | h->weak = weak; | |
3634 | h->rehash_threshold = rehash_threshold; | |
3635 | h->rehash_size = rehash_size; | |
3636 | h->count = make_number (0); | |
3637 | h->key_and_value = Fmake_vector (make_number (2 * sz), Qnil); | |
3638 | h->hash = Fmake_vector (size, Qnil); | |
3639 | h->next = Fmake_vector (size, Qnil); | |
3640 | index_size = next_almost_prime (sz / XFLOATINT (rehash_threshold)); | |
3641 | h->index = Fmake_vector (make_number (index_size), Qnil); | |
3642 | ||
3643 | /* Set up the free list. */ | |
3644 | for (i = 0; i < sz - 1; ++i) | |
3645 | HASH_NEXT (h, i) = make_number (i + 1); | |
3646 | h->next_free = make_number (0); | |
3647 | ||
3648 | XSET_HASH_TABLE (table, h); | |
3649 | xassert (HASH_TABLE_P (table)); | |
3650 | xassert (XHASH_TABLE (table) == h); | |
3651 | ||
3652 | /* Maybe add this hash table to the list of all weak hash tables. */ | |
3653 | if (NILP (h->weak)) | |
3654 | h->next_weak = Qnil; | |
3655 | else | |
3656 | { | |
3657 | h->next_weak = Vweak_hash_tables; | |
3658 | Vweak_hash_tables = table; | |
3659 | } | |
3660 | ||
3661 | return table; | |
3662 | } | |
3663 | ||
3664 | ||
f899c503 GM |
3665 | /* Return a copy of hash table H1. Keys and values are not copied, |
3666 | only the table itself is. */ | |
3667 | ||
3668 | Lisp_Object | |
3669 | copy_hash_table (h1) | |
3670 | struct Lisp_Hash_Table *h1; | |
3671 | { | |
3672 | Lisp_Object table; | |
3673 | struct Lisp_Hash_Table *h2; | |
3674 | struct Lisp_Vector *v, *next; | |
3675 | int len; | |
3676 | ||
3677 | len = VECSIZE (struct Lisp_Hash_Table); | |
3678 | v = allocate_vectorlike (len); | |
3679 | h2 = (struct Lisp_Hash_Table *) v; | |
3680 | next = h2->vec_next; | |
3681 | bcopy (h1, h2, sizeof *h2); | |
3682 | h2->vec_next = next; | |
3683 | h2->key_and_value = Fcopy_sequence (h1->key_and_value); | |
3684 | h2->hash = Fcopy_sequence (h1->hash); | |
3685 | h2->next = Fcopy_sequence (h1->next); | |
3686 | h2->index = Fcopy_sequence (h1->index); | |
3687 | XSET_HASH_TABLE (table, h2); | |
3688 | ||
3689 | /* Maybe add this hash table to the list of all weak hash tables. */ | |
3690 | if (!NILP (h2->weak)) | |
3691 | { | |
3692 | h2->next_weak = Vweak_hash_tables; | |
3693 | Vweak_hash_tables = table; | |
3694 | } | |
3695 | ||
3696 | return table; | |
3697 | } | |
3698 | ||
3699 | ||
d80c6c11 GM |
3700 | /* Resize hash table H if it's too full. If H cannot be resized |
3701 | because it's already too large, throw an error. */ | |
3702 | ||
3703 | static INLINE void | |
3704 | maybe_resize_hash_table (h) | |
3705 | struct Lisp_Hash_Table *h; | |
3706 | { | |
3707 | if (NILP (h->next_free)) | |
3708 | { | |
3709 | int old_size = HASH_TABLE_SIZE (h); | |
3710 | int i, new_size, index_size; | |
3711 | ||
3712 | if (INTEGERP (h->rehash_size)) | |
3713 | new_size = old_size + XFASTINT (h->rehash_size); | |
3714 | else | |
3715 | new_size = old_size * XFLOATINT (h->rehash_size); | |
3716 | index_size = next_almost_prime (new_size | |
3717 | / XFLOATINT (h->rehash_threshold)); | |
3718 | if (max (index_size, 2 * new_size) & ~VALMASK) | |
3719 | error ("Hash table too large to resize"); | |
3720 | ||
3721 | h->key_and_value = larger_vector (h->key_and_value, 2 * new_size, Qnil); | |
3722 | h->next = larger_vector (h->next, new_size, Qnil); | |
3723 | h->hash = larger_vector (h->hash, new_size, Qnil); | |
3724 | h->index = Fmake_vector (make_number (index_size), Qnil); | |
3725 | ||
3726 | /* Update the free list. Do it so that new entries are added at | |
3727 | the end of the free list. This makes some operations like | |
3728 | maphash faster. */ | |
3729 | for (i = old_size; i < new_size - 1; ++i) | |
3730 | HASH_NEXT (h, i) = make_number (i + 1); | |
3731 | ||
3732 | if (!NILP (h->next_free)) | |
3733 | { | |
3734 | Lisp_Object last, next; | |
3735 | ||
3736 | last = h->next_free; | |
3737 | while (next = HASH_NEXT (h, XFASTINT (last)), | |
3738 | !NILP (next)) | |
3739 | last = next; | |
3740 | ||
3741 | HASH_NEXT (h, XFASTINT (last)) = make_number (old_size); | |
3742 | } | |
3743 | else | |
3744 | XSETFASTINT (h->next_free, old_size); | |
3745 | ||
3746 | /* Rehash. */ | |
3747 | for (i = 0; i < old_size; ++i) | |
3748 | if (!NILP (HASH_HASH (h, i))) | |
3749 | { | |
3750 | unsigned hash_code = XUINT (HASH_HASH (h, i)); | |
3751 | int start_of_bucket = hash_code % XVECTOR (h->index)->size; | |
3752 | HASH_NEXT (h, i) = HASH_INDEX (h, start_of_bucket); | |
3753 | HASH_INDEX (h, start_of_bucket) = make_number (i); | |
3754 | } | |
3755 | } | |
3756 | } | |
3757 | ||
3758 | ||
3759 | /* Lookup KEY in hash table H. If HASH is non-null, return in *HASH | |
3760 | the hash code of KEY. Value is the index of the entry in H | |
3761 | matching KEY, or -1 if not found. */ | |
3762 | ||
3763 | int | |
3764 | hash_lookup (h, key, hash) | |
3765 | struct Lisp_Hash_Table *h; | |
3766 | Lisp_Object key; | |
3767 | unsigned *hash; | |
3768 | { | |
3769 | unsigned hash_code; | |
3770 | int start_of_bucket; | |
3771 | Lisp_Object idx; | |
3772 | ||
3773 | hash_code = h->hashfn (h, key); | |
3774 | if (hash) | |
3775 | *hash = hash_code; | |
3776 | ||
3777 | start_of_bucket = hash_code % XVECTOR (h->index)->size; | |
3778 | idx = HASH_INDEX (h, start_of_bucket); | |
3779 | ||
3780 | while (!NILP (idx)) | |
3781 | { | |
3782 | int i = XFASTINT (idx); | |
2e5da676 GM |
3783 | if (EQ (key, HASH_KEY (h, i)) |
3784 | || (h->cmpfn | |
3785 | && h->cmpfn (h, key, hash_code, | |
3786 | HASH_KEY (h, i), HASH_HASH (h, i)))) | |
d80c6c11 GM |
3787 | break; |
3788 | idx = HASH_NEXT (h, i); | |
3789 | } | |
3790 | ||
3791 | return NILP (idx) ? -1 : XFASTINT (idx); | |
3792 | } | |
3793 | ||
3794 | ||
3795 | /* Put an entry into hash table H that associates KEY with VALUE. | |
3796 | HASH is a previously computed hash code of KEY. */ | |
3797 | ||
3798 | void | |
3799 | hash_put (h, key, value, hash) | |
3800 | struct Lisp_Hash_Table *h; | |
3801 | Lisp_Object key, value; | |
3802 | unsigned hash; | |
3803 | { | |
3804 | int start_of_bucket, i; | |
3805 | ||
3806 | xassert ((hash & ~VALMASK) == 0); | |
3807 | ||
3808 | /* Increment count after resizing because resizing may fail. */ | |
3809 | maybe_resize_hash_table (h); | |
3810 | h->count = make_number (XFASTINT (h->count) + 1); | |
3811 | ||
3812 | /* Store key/value in the key_and_value vector. */ | |
3813 | i = XFASTINT (h->next_free); | |
3814 | h->next_free = HASH_NEXT (h, i); | |
3815 | HASH_KEY (h, i) = key; | |
3816 | HASH_VALUE (h, i) = value; | |
3817 | ||
3818 | /* Remember its hash code. */ | |
3819 | HASH_HASH (h, i) = make_number (hash); | |
3820 | ||
3821 | /* Add new entry to its collision chain. */ | |
3822 | start_of_bucket = hash % XVECTOR (h->index)->size; | |
3823 | HASH_NEXT (h, i) = HASH_INDEX (h, start_of_bucket); | |
3824 | HASH_INDEX (h, start_of_bucket) = make_number (i); | |
3825 | } | |
3826 | ||
3827 | ||
3828 | /* Remove the entry matching KEY from hash table H, if there is one. */ | |
3829 | ||
3830 | void | |
3831 | hash_remove (h, key) | |
3832 | struct Lisp_Hash_Table *h; | |
3833 | Lisp_Object key; | |
3834 | { | |
3835 | unsigned hash_code; | |
3836 | int start_of_bucket; | |
3837 | Lisp_Object idx, prev; | |
3838 | ||
3839 | hash_code = h->hashfn (h, key); | |
3840 | start_of_bucket = hash_code % XVECTOR (h->index)->size; | |
3841 | idx = HASH_INDEX (h, start_of_bucket); | |
3842 | prev = Qnil; | |
3843 | ||
3844 | while (!NILP (idx)) | |
3845 | { | |
3846 | int i = XFASTINT (idx); | |
3847 | ||
2e5da676 GM |
3848 | if (EQ (key, HASH_KEY (h, i)) |
3849 | || (h->cmpfn | |
3850 | && h->cmpfn (h, key, hash_code, | |
3851 | HASH_KEY (h, i), HASH_HASH (h, i)))) | |
d80c6c11 GM |
3852 | { |
3853 | /* Take entry out of collision chain. */ | |
3854 | if (NILP (prev)) | |
3855 | HASH_INDEX (h, start_of_bucket) = HASH_NEXT (h, i); | |
3856 | else | |
3857 | HASH_NEXT (h, XFASTINT (prev)) = HASH_NEXT (h, i); | |
3858 | ||
3859 | /* Clear slots in key_and_value and add the slots to | |
3860 | the free list. */ | |
3861 | HASH_KEY (h, i) = HASH_VALUE (h, i) = HASH_HASH (h, i) = Qnil; | |
3862 | HASH_NEXT (h, i) = h->next_free; | |
3863 | h->next_free = make_number (i); | |
3864 | h->count = make_number (XFASTINT (h->count) - 1); | |
3865 | xassert (XINT (h->count) >= 0); | |
3866 | break; | |
3867 | } | |
3868 | else | |
3869 | { | |
3870 | prev = idx; | |
3871 | idx = HASH_NEXT (h, i); | |
3872 | } | |
3873 | } | |
3874 | } | |
3875 | ||
3876 | ||
3877 | /* Clear hash table H. */ | |
3878 | ||
3879 | void | |
3880 | hash_clear (h) | |
3881 | struct Lisp_Hash_Table *h; | |
3882 | { | |
3883 | if (XFASTINT (h->count) > 0) | |
3884 | { | |
3885 | int i, size = HASH_TABLE_SIZE (h); | |
3886 | ||
3887 | for (i = 0; i < size; ++i) | |
3888 | { | |
3889 | HASH_NEXT (h, i) = i < size - 1 ? make_number (i + 1) : Qnil; | |
3890 | HASH_KEY (h, i) = Qnil; | |
3891 | HASH_VALUE (h, i) = Qnil; | |
3892 | HASH_HASH (h, i) = Qnil; | |
3893 | } | |
3894 | ||
3895 | for (i = 0; i < XVECTOR (h->index)->size; ++i) | |
3896 | XVECTOR (h->index)->contents[i] = Qnil; | |
3897 | ||
3898 | h->next_free = make_number (0); | |
3899 | h->count = make_number (0); | |
3900 | } | |
3901 | } | |
3902 | ||
3903 | ||
3904 | \f | |
3905 | /************************************************************************ | |
3906 | Weak Hash Tables | |
3907 | ************************************************************************/ | |
3908 | ||
3909 | /* Remove elements from weak hash tables that don't survive the | |
3910 | current garbage collection. Remove weak tables that don't survive | |
3911 | from Vweak_hash_tables. Called from gc_sweep. */ | |
3912 | ||
3913 | void | |
3914 | sweep_weak_hash_tables () | |
3915 | { | |
3916 | Lisp_Object table; | |
3917 | struct Lisp_Hash_Table *h = 0, *prev; | |
3918 | ||
3919 | for (table = Vweak_hash_tables; !GC_NILP (table); table = h->next_weak) | |
3920 | { | |
3921 | prev = h; | |
3922 | h = XHASH_TABLE (table); | |
3923 | ||
3924 | if (h->size & ARRAY_MARK_FLAG) | |
3925 | { | |
3926 | if (XFASTINT (h->count) > 0) | |
3927 | { | |
3928 | int bucket, n; | |
3929 | ||
3930 | n = XVECTOR (h->index)->size & ~ARRAY_MARK_FLAG; | |
3931 | for (bucket = 0; bucket < n; ++bucket) | |
3932 | { | |
ada0fa14 | 3933 | Lisp_Object idx, prev; |
d80c6c11 GM |
3934 | |
3935 | /* Follow collision chain, removing entries that | |
3936 | don't survive this garbage collection. */ | |
3937 | idx = HASH_INDEX (h, bucket); | |
3938 | prev = Qnil; | |
3939 | while (!GC_NILP (idx)) | |
3940 | { | |
3941 | int remove_p; | |
3942 | int i = XFASTINT (idx); | |
3943 | Lisp_Object next; | |
3944 | ||
f899c503 | 3945 | if (EQ (h->weak, Qkey)) |
d80c6c11 | 3946 | remove_p = !survives_gc_p (HASH_KEY (h, i)); |
f899c503 | 3947 | else if (EQ (h->weak, Qvalue)) |
d80c6c11 | 3948 | remove_p = !survives_gc_p (HASH_VALUE (h, i)); |
f899c503 | 3949 | else if (EQ (h->weak, Qt)) |
d80c6c11 GM |
3950 | remove_p = (!survives_gc_p (HASH_KEY (h, i)) |
3951 | || !survives_gc_p (HASH_VALUE (h, i))); | |
3952 | else | |
3953 | abort (); | |
3954 | ||
3955 | next = HASH_NEXT (h, i); | |
3956 | if (remove_p) | |
3957 | { | |
3958 | /* Take out of collision chain. */ | |
3959 | if (GC_NILP (prev)) | |
3960 | HASH_INDEX (h, i) = next; | |
3961 | else | |
3962 | HASH_NEXT (h, XFASTINT (prev)) = next; | |
3963 | ||
3964 | /* Add to free list. */ | |
3965 | HASH_NEXT (h, i) = h->next_free; | |
3966 | h->next_free = idx; | |
3967 | ||
3968 | /* Clear key, value, and hash. */ | |
3969 | HASH_KEY (h, i) = HASH_VALUE (h, i) = Qnil; | |
3970 | HASH_HASH (h, i) = Qnil; | |
3971 | ||
3972 | h->count = make_number (XFASTINT (h->count) - 1); | |
3973 | } | |
3974 | else | |
3975 | { | |
3976 | /* Make sure key and value survive. */ | |
3977 | mark_object (&HASH_KEY (h, i)); | |
3978 | mark_object (&HASH_VALUE (h, i)); | |
3979 | } | |
3980 | ||
3981 | idx = next; | |
3982 | } | |
3983 | } | |
3984 | } | |
3985 | } | |
3986 | else | |
3987 | { | |
3988 | /* Table is not marked, and will thus be freed. | |
3989 | Take it out of the list of weak hash tables. */ | |
3990 | if (prev) | |
3991 | prev->next_weak = h->next_weak; | |
3992 | else | |
3993 | Vweak_hash_tables = h->next_weak; | |
3994 | } | |
3995 | } | |
3996 | } | |
3997 | ||
3998 | ||
3999 | \f | |
4000 | /*********************************************************************** | |
4001 | Hash Code Computation | |
4002 | ***********************************************************************/ | |
4003 | ||
4004 | /* Maximum depth up to which to dive into Lisp structures. */ | |
4005 | ||
4006 | #define SXHASH_MAX_DEPTH 3 | |
4007 | ||
4008 | /* Maximum length up to which to take list and vector elements into | |
4009 | account. */ | |
4010 | ||
4011 | #define SXHASH_MAX_LEN 7 | |
4012 | ||
4013 | /* Combine two integers X and Y for hashing. */ | |
4014 | ||
4015 | #define SXHASH_COMBINE(X, Y) \ | |
ada0fa14 | 4016 | ((((unsigned)(X) << 4) + (((unsigned)(X) >> 24) & 0x0fffffff)) \ |
d80c6c11 GM |
4017 | + (unsigned)(Y)) |
4018 | ||
4019 | ||
4020 | /* Return a hash for string PTR which has length LEN. */ | |
4021 | ||
4022 | static unsigned | |
4023 | sxhash_string (ptr, len) | |
4024 | unsigned char *ptr; | |
4025 | int len; | |
4026 | { | |
4027 | unsigned char *p = ptr; | |
4028 | unsigned char *end = p + len; | |
4029 | unsigned char c; | |
4030 | unsigned hash = 0; | |
4031 | ||
4032 | while (p != end) | |
4033 | { | |
4034 | c = *p++; | |
4035 | if (c >= 0140) | |
4036 | c -= 40; | |
4037 | hash = ((hash << 3) + (hash >> 28) + c); | |
4038 | } | |
4039 | ||
4040 | return hash & 07777777777; | |
4041 | } | |
4042 | ||
4043 | ||
4044 | /* Return a hash for list LIST. DEPTH is the current depth in the | |
4045 | list. We don't recurse deeper than SXHASH_MAX_DEPTH in it. */ | |
4046 | ||
4047 | static unsigned | |
4048 | sxhash_list (list, depth) | |
4049 | Lisp_Object list; | |
4050 | int depth; | |
4051 | { | |
4052 | unsigned hash = 0; | |
4053 | int i; | |
4054 | ||
4055 | if (depth < SXHASH_MAX_DEPTH) | |
4056 | for (i = 0; | |
4057 | CONSP (list) && i < SXHASH_MAX_LEN; | |
4058 | list = XCDR (list), ++i) | |
4059 | { | |
4060 | unsigned hash2 = sxhash (XCAR (list), depth + 1); | |
4061 | hash = SXHASH_COMBINE (hash, hash2); | |
4062 | } | |
4063 | ||
4064 | return hash; | |
4065 | } | |
4066 | ||
4067 | ||
4068 | /* Return a hash for vector VECTOR. DEPTH is the current depth in | |
4069 | the Lisp structure. */ | |
4070 | ||
4071 | static unsigned | |
4072 | sxhash_vector (vec, depth) | |
4073 | Lisp_Object vec; | |
4074 | int depth; | |
4075 | { | |
4076 | unsigned hash = XVECTOR (vec)->size; | |
4077 | int i, n; | |
4078 | ||
4079 | n = min (SXHASH_MAX_LEN, XVECTOR (vec)->size); | |
4080 | for (i = 0; i < n; ++i) | |
4081 | { | |
4082 | unsigned hash2 = sxhash (XVECTOR (vec)->contents[i], depth + 1); | |
4083 | hash = SXHASH_COMBINE (hash, hash2); | |
4084 | } | |
4085 | ||
4086 | return hash; | |
4087 | } | |
4088 | ||
4089 | ||
4090 | /* Return a hash for bool-vector VECTOR. */ | |
4091 | ||
4092 | static unsigned | |
4093 | sxhash_bool_vector (vec) | |
4094 | Lisp_Object vec; | |
4095 | { | |
4096 | unsigned hash = XBOOL_VECTOR (vec)->size; | |
4097 | int i, n; | |
4098 | ||
4099 | n = min (SXHASH_MAX_LEN, XBOOL_VECTOR (vec)->vector_size); | |
4100 | for (i = 0; i < n; ++i) | |
4101 | hash = SXHASH_COMBINE (hash, XBOOL_VECTOR (vec)->data[i]); | |
4102 | ||
4103 | return hash; | |
4104 | } | |
4105 | ||
4106 | ||
4107 | /* Return a hash code for OBJ. DEPTH is the current depth in the Lisp | |
4108 | structure. Value is an unsigned integer clipped to VALMASK. */ | |
4109 | ||
4110 | unsigned | |
4111 | sxhash (obj, depth) | |
4112 | Lisp_Object obj; | |
4113 | int depth; | |
4114 | { | |
4115 | unsigned hash; | |
4116 | ||
4117 | if (depth > SXHASH_MAX_DEPTH) | |
4118 | return 0; | |
4119 | ||
4120 | switch (XTYPE (obj)) | |
4121 | { | |
4122 | case Lisp_Int: | |
4123 | hash = XUINT (obj); | |
4124 | break; | |
4125 | ||
4126 | case Lisp_Symbol: | |
4127 | hash = sxhash_string (XSYMBOL (obj)->name->data, | |
4128 | XSYMBOL (obj)->name->size); | |
4129 | break; | |
4130 | ||
4131 | case Lisp_Misc: | |
4132 | hash = XUINT (obj); | |
4133 | break; | |
4134 | ||
4135 | case Lisp_String: | |
4136 | hash = sxhash_string (XSTRING (obj)->data, XSTRING (obj)->size); | |
4137 | break; | |
4138 | ||
4139 | /* This can be everything from a vector to an overlay. */ | |
4140 | case Lisp_Vectorlike: | |
4141 | if (VECTORP (obj)) | |
4142 | /* According to the CL HyperSpec, two arrays are equal only if | |
4143 | they are `eq', except for strings and bit-vectors. In | |
4144 | Emacs, this works differently. We have to compare element | |
4145 | by element. */ | |
4146 | hash = sxhash_vector (obj, depth); | |
4147 | else if (BOOL_VECTOR_P (obj)) | |
4148 | hash = sxhash_bool_vector (obj); | |
4149 | else | |
4150 | /* Others are `equal' if they are `eq', so let's take their | |
4151 | address as hash. */ | |
4152 | hash = XUINT (obj); | |
4153 | break; | |
4154 | ||
4155 | case Lisp_Cons: | |
4156 | hash = sxhash_list (obj, depth); | |
4157 | break; | |
4158 | ||
4159 | case Lisp_Float: | |
4160 | { | |
e84b1dea GM |
4161 | unsigned char *p = (unsigned char *) &XFLOAT_DATA (obj); |
4162 | unsigned char *e = p + sizeof XFLOAT_DATA (obj); | |
d80c6c11 GM |
4163 | for (hash = 0; p < e; ++p) |
4164 | hash = SXHASH_COMBINE (hash, *p); | |
4165 | break; | |
4166 | } | |
4167 | ||
4168 | default: | |
4169 | abort (); | |
4170 | } | |
4171 | ||
4172 | return hash & VALMASK; | |
4173 | } | |
4174 | ||
4175 | ||
4176 | \f | |
4177 | /*********************************************************************** | |
4178 | Lisp Interface | |
4179 | ***********************************************************************/ | |
4180 | ||
4181 | ||
4182 | DEFUN ("sxhash", Fsxhash, Ssxhash, 1, 1, 0, | |
4183 | "Compute a hash code for OBJ and return it as integer.") | |
4184 | (obj) | |
4185 | Lisp_Object obj; | |
4186 | { | |
4187 | unsigned hash = sxhash (obj, 0);; | |
4188 | return make_number (hash); | |
4189 | } | |
4190 | ||
4191 | ||
4192 | DEFUN ("make-hash-table", Fmake_hash_table, Smake_hash_table, 0, MANY, 0, | |
4193 | "Create and return a new hash table.\n\ | |
4194 | Arguments are specified as keyword/argument pairs. The following\n\ | |
4195 | arguments are defined:\n\ | |
4196 | \n\ | |
526cfb19 | 4197 | :TEST TEST -- TEST must be a symbol that specifies how to compare keys.\n\ |
d80c6c11 GM |
4198 | Default is `eql'. Predefined are the tests `eq', `eql', and `equal'.\n\ |
4199 | User-supplied test and hash functions can be specified via\n\ | |
4200 | `define-hash-table-test'.\n\ | |
4201 | \n\ | |
526cfb19 | 4202 | :SIZE SIZE -- A hint as to how many elements will be put in the table.\n\ |
d80c6c11 GM |
4203 | Default is 65.\n\ |
4204 | \n\ | |
4205 | :REHASH-SIZE REHASH-SIZE - Indicates how to expand the table when\n\ | |
4206 | it fills up. If REHASH-SIZE is an integer, add that many space.\n\ | |
4207 | If it is a float, it must be > 1.0, and the new size is computed by\n\ | |
4208 | multiplying the old size with that factor. Default is 1.5.\n\ | |
4209 | \n\ | |
4210 | :REHASH-THRESHOLD THRESHOLD -- THRESHOLD must a float > 0, and <= 1.0.\n\ | |
4211 | Resize the hash table when ratio of the number of entries in the table.\n\ | |
4212 | Default is 0.8.\n\ | |
4213 | \n\ | |
ee0403b3 | 4214 | :WEAKNESS WEAK -- WEAK must be one of nil, t, `key', or `value'.\n\ |
f899c503 GM |
4215 | If WEAK is not nil, the table returned is a weak table. Key/value\n\ |
4216 | pairs are removed from a weak hash table when their key, value or both\n\ | |
4217 | (WEAK t) are otherwise unreferenced. Default is nil.") | |
d80c6c11 GM |
4218 | (nargs, args) |
4219 | int nargs; | |
4220 | Lisp_Object *args; | |
4221 | { | |
4222 | Lisp_Object test, size, rehash_size, rehash_threshold, weak; | |
4223 | Lisp_Object user_test, user_hash; | |
4224 | char *used; | |
4225 | int i; | |
4226 | ||
4227 | /* The vector `used' is used to keep track of arguments that | |
4228 | have been consumed. */ | |
4229 | used = (char *) alloca (nargs * sizeof *used); | |
4230 | bzero (used, nargs * sizeof *used); | |
4231 | ||
4232 | /* See if there's a `:test TEST' among the arguments. */ | |
4233 | i = get_key_arg (QCtest, nargs, args, used); | |
4234 | test = i < 0 ? Qeql : args[i]; | |
4235 | if (!EQ (test, Qeq) && !EQ (test, Qeql) && !EQ (test, Qequal)) | |
4236 | { | |
4237 | /* See if it is a user-defined test. */ | |
4238 | Lisp_Object prop; | |
4239 | ||
4240 | prop = Fget (test, Qhash_table_test); | |
4241 | if (!CONSP (prop) || XFASTINT (Flength (prop)) < 2) | |
4242 | Fsignal (Qerror, list2 (build_string ("Illegal hash table test"), | |
4243 | test)); | |
4244 | user_test = Fnth (make_number (0), prop); | |
4245 | user_hash = Fnth (make_number (1), prop); | |
4246 | } | |
4247 | else | |
4248 | user_test = user_hash = Qnil; | |
4249 | ||
4250 | /* See if there's a `:size SIZE' argument. */ | |
4251 | i = get_key_arg (QCsize, nargs, args, used); | |
4252 | size = i < 0 ? make_number (DEFAULT_HASH_SIZE) : args[i]; | |
4253 | if (!INTEGERP (size) || XINT (size) <= 0) | |
4254 | Fsignal (Qerror, | |
4255 | list2 (build_string ("Illegal hash table size"), | |
4256 | size)); | |
4257 | ||
4258 | /* Look for `:rehash-size SIZE'. */ | |
4259 | i = get_key_arg (QCrehash_size, nargs, args, used); | |
4260 | rehash_size = i < 0 ? make_float (DEFAULT_REHASH_SIZE) : args[i]; | |
4261 | if (!NUMBERP (rehash_size) | |
4262 | || (INTEGERP (rehash_size) && XINT (rehash_size) <= 0) | |
4263 | || XFLOATINT (rehash_size) <= 1.0) | |
4264 | Fsignal (Qerror, | |
4265 | list2 (build_string ("Illegal hash table rehash size"), | |
4266 | rehash_size)); | |
4267 | ||
4268 | /* Look for `:rehash-threshold THRESHOLD'. */ | |
4269 | i = get_key_arg (QCrehash_threshold, nargs, args, used); | |
4270 | rehash_threshold = i < 0 ? make_float (DEFAULT_REHASH_THRESHOLD) : args[i]; | |
4271 | if (!FLOATP (rehash_threshold) | |
4272 | || XFLOATINT (rehash_threshold) <= 0.0 | |
4273 | || XFLOATINT (rehash_threshold) > 1.0) | |
4274 | Fsignal (Qerror, | |
4275 | list2 (build_string ("Illegal hash table rehash threshold"), | |
4276 | rehash_threshold)); | |
4277 | ||
ee0403b3 GM |
4278 | /* Look for `:weakness WEAK'. */ |
4279 | i = get_key_arg (QCweakness, nargs, args, used); | |
d80c6c11 | 4280 | weak = i < 0 ? Qnil : args[i]; |
d80c6c11 | 4281 | if (!NILP (weak) |
f899c503 GM |
4282 | && !EQ (weak, Qt) |
4283 | && !EQ (weak, Qkey) | |
4284 | && !EQ (weak, Qvalue)) | |
d80c6c11 GM |
4285 | Fsignal (Qerror, list2 (build_string ("Illegal hash table weakness"), |
4286 | weak)); | |
4287 | ||
4288 | /* Now, all args should have been used up, or there's a problem. */ | |
4289 | for (i = 0; i < nargs; ++i) | |
4290 | if (!used[i]) | |
4291 | Fsignal (Qerror, | |
4292 | list2 (build_string ("Invalid argument list"), args[i])); | |
4293 | ||
4294 | return make_hash_table (test, size, rehash_size, rehash_threshold, weak, | |
4295 | user_test, user_hash); | |
4296 | } | |
4297 | ||
4298 | ||
f899c503 GM |
4299 | DEFUN ("copy-hash-table", Fcopy_hash_table, Scopy_hash_table, 1, 1, 0, |
4300 | "Return a copy of hash table TABLE.") | |
4301 | (table) | |
4302 | Lisp_Object table; | |
4303 | { | |
4304 | return copy_hash_table (check_hash_table (table)); | |
4305 | } | |
4306 | ||
4307 | ||
38b5e497 | 4308 | DEFUN ("makehash", Fmakehash, Smakehash, 0, 1, 0, |
d80c6c11 | 4309 | "Create a new hash table.\n\ |
c5092f3e | 4310 | Optional first argument TEST specifies how to compare keys in\n\ |
d80c6c11 | 4311 | the table. Predefined tests are `eq', `eql', and `equal'. Default\n\ |
38b5e497 GM |
4312 | is `eql'. New tests can be defined with `define-hash-table-test'.") |
4313 | (test) | |
4314 | Lisp_Object test; | |
d80c6c11 | 4315 | { |
38b5e497 GM |
4316 | Lisp_Object args[2]; |
4317 | args[0] = QCtest; | |
4318 | args[1] = test; | |
4319 | return Fmake_hash_table (2, args); | |
d80c6c11 GM |
4320 | } |
4321 | ||
4322 | ||
4323 | DEFUN ("hash-table-count", Fhash_table_count, Shash_table_count, 1, 1, 0, | |
4324 | "Return the number of elements in TABLE.") | |
4325 | (table) | |
4326 | Lisp_Object table; | |
4327 | { | |
4328 | return check_hash_table (table)->count; | |
4329 | } | |
4330 | ||
4331 | ||
4332 | DEFUN ("hash-table-rehash-size", Fhash_table_rehash_size, | |
4333 | Shash_table_rehash_size, 1, 1, 0, | |
4334 | "Return the current rehash size of TABLE.") | |
4335 | (table) | |
4336 | Lisp_Object table; | |
4337 | { | |
4338 | return check_hash_table (table)->rehash_size; | |
4339 | } | |
4340 | ||
4341 | ||
4342 | DEFUN ("hash-table-rehash-threshold", Fhash_table_rehash_threshold, | |
4343 | Shash_table_rehash_threshold, 1, 1, 0, | |
4344 | "Return the current rehash threshold of TABLE.") | |
4345 | (table) | |
4346 | Lisp_Object table; | |
4347 | { | |
4348 | return check_hash_table (table)->rehash_threshold; | |
4349 | } | |
4350 | ||
4351 | ||
4352 | DEFUN ("hash-table-size", Fhash_table_size, Shash_table_size, 1, 1, 0, | |
4353 | "Return the size of TABLE.\n\ | |
4354 | The size can be used as an argument to `make-hash-table' to create\n\ | |
4355 | a hash table than can hold as many elements of TABLE holds\n\ | |
4356 | without need for resizing.") | |
4357 | (table) | |
4358 | Lisp_Object table; | |
4359 | { | |
4360 | struct Lisp_Hash_Table *h = check_hash_table (table); | |
4361 | return make_number (HASH_TABLE_SIZE (h)); | |
4362 | } | |
4363 | ||
4364 | ||
4365 | DEFUN ("hash-table-test", Fhash_table_test, Shash_table_test, 1, 1, 0, | |
4366 | "Return the test TABLE uses.") | |
4367 | (table) | |
4368 | Lisp_Object table; | |
4369 | { | |
4370 | return check_hash_table (table)->test; | |
4371 | } | |
4372 | ||
4373 | ||
e84b1dea GM |
4374 | DEFUN ("hash-table-weakness", Fhash_table_weakness, Shash_table_weakness, |
4375 | 1, 1, 0, | |
d80c6c11 GM |
4376 | "Return the weakness of TABLE.") |
4377 | (table) | |
4378 | Lisp_Object table; | |
4379 | { | |
4380 | return check_hash_table (table)->weak; | |
4381 | } | |
4382 | ||
4383 | ||
4384 | DEFUN ("hash-table-p", Fhash_table_p, Shash_table_p, 1, 1, 0, | |
4385 | "Return t if OBJ is a Lisp hash table object.") | |
4386 | (obj) | |
4387 | Lisp_Object obj; | |
4388 | { | |
4389 | return HASH_TABLE_P (obj) ? Qt : Qnil; | |
4390 | } | |
4391 | ||
4392 | ||
4393 | DEFUN ("clrhash", Fclrhash, Sclrhash, 1, 1, 0, | |
4394 | "Clear hash table TABLE.") | |
4395 | (table) | |
4396 | Lisp_Object table; | |
4397 | { | |
4398 | hash_clear (check_hash_table (table)); | |
4399 | return Qnil; | |
4400 | } | |
4401 | ||
4402 | ||
4403 | DEFUN ("gethash", Fgethash, Sgethash, 2, 3, 0, | |
4404 | "Look up KEY in TABLE and return its associated value.\n\ | |
4405 | If KEY is not found, return DFLT which defaults to nil.") | |
1fffe870 | 4406 | (key, table, dflt) |
68c45bf0 | 4407 | Lisp_Object key, table, dflt; |
d80c6c11 GM |
4408 | { |
4409 | struct Lisp_Hash_Table *h = check_hash_table (table); | |
4410 | int i = hash_lookup (h, key, NULL); | |
4411 | return i >= 0 ? HASH_VALUE (h, i) : dflt; | |
4412 | } | |
4413 | ||
4414 | ||
4415 | DEFUN ("puthash", Fputhash, Sputhash, 3, 3, 0, | |
4416 | "Associate KEY with VALUE is hash table TABLE.\n\ | |
4417 | If KEY is already present in table, replace its current value with\n\ | |
4418 | VALUE.") | |
1fffe870 MR |
4419 | (key, value, table) |
4420 | Lisp_Object key, value, table; | |
d80c6c11 GM |
4421 | { |
4422 | struct Lisp_Hash_Table *h = check_hash_table (table); | |
4423 | int i; | |
4424 | unsigned hash; | |
4425 | ||
4426 | i = hash_lookup (h, key, &hash); | |
4427 | if (i >= 0) | |
4428 | HASH_VALUE (h, i) = value; | |
4429 | else | |
4430 | hash_put (h, key, value, hash); | |
4431 | ||
4432 | return Qnil; | |
4433 | } | |
4434 | ||
4435 | ||
4436 | DEFUN ("remhash", Fremhash, Sremhash, 2, 2, 0, | |
4437 | "Remove KEY from TABLE.") | |
1fffe870 MR |
4438 | (key, table) |
4439 | Lisp_Object key, table; | |
d80c6c11 GM |
4440 | { |
4441 | struct Lisp_Hash_Table *h = check_hash_table (table); | |
4442 | hash_remove (h, key); | |
4443 | return Qnil; | |
4444 | } | |
4445 | ||
4446 | ||
4447 | DEFUN ("maphash", Fmaphash, Smaphash, 2, 2, 0, | |
4448 | "Call FUNCTION for all entries in hash table TABLE.\n\ | |
4449 | FUNCTION is called with 2 arguments KEY and VALUE.") | |
4450 | (function, table) | |
4451 | Lisp_Object function, table; | |
4452 | { | |
4453 | struct Lisp_Hash_Table *h = check_hash_table (table); | |
4454 | Lisp_Object args[3]; | |
4455 | int i; | |
4456 | ||
4457 | for (i = 0; i < HASH_TABLE_SIZE (h); ++i) | |
4458 | if (!NILP (HASH_HASH (h, i))) | |
4459 | { | |
4460 | args[0] = function; | |
4461 | args[1] = HASH_KEY (h, i); | |
4462 | args[2] = HASH_VALUE (h, i); | |
4463 | Ffuncall (3, args); | |
4464 | } | |
4465 | ||
4466 | return Qnil; | |
4467 | } | |
4468 | ||
4469 | ||
4470 | DEFUN ("define-hash-table-test", Fdefine_hash_table_test, | |
4471 | Sdefine_hash_table_test, 3, 3, 0, | |
4472 | "Define a new hash table test with name NAME, a symbol.\n\ | |
4473 | In hash tables create with NAME specified as test, use TEST to compare\n\ | |
4474 | keys, and HASH for computing hash codes of keys.\n\ | |
4475 | \n\ | |
4476 | TEST must be a function taking two arguments and returning non-nil\n\ | |
4477 | if both arguments are the same. HASH must be a function taking\n\ | |
4478 | one argument and return an integer that is the hash code of the\n\ | |
4479 | argument. Hash code computation should use the whole value range of\n\ | |
4480 | integers, including negative integers.") | |
4481 | (name, test, hash) | |
4482 | Lisp_Object name, test, hash; | |
4483 | { | |
4484 | return Fput (name, Qhash_table_test, list2 (test, hash)); | |
4485 | } | |
4486 | ||
4487 | ||
4488 | ||
24c129e4 | 4489 | \f |
dfcf069d | 4490 | void |
7b863bd5 JB |
4491 | syms_of_fns () |
4492 | { | |
d80c6c11 GM |
4493 | /* Hash table stuff. */ |
4494 | Qhash_table_p = intern ("hash-table-p"); | |
4495 | staticpro (&Qhash_table_p); | |
4496 | Qeq = intern ("eq"); | |
4497 | staticpro (&Qeq); | |
4498 | Qeql = intern ("eql"); | |
4499 | staticpro (&Qeql); | |
4500 | Qequal = intern ("equal"); | |
4501 | staticpro (&Qequal); | |
4502 | QCtest = intern (":test"); | |
4503 | staticpro (&QCtest); | |
4504 | QCsize = intern (":size"); | |
4505 | staticpro (&QCsize); | |
4506 | QCrehash_size = intern (":rehash-size"); | |
4507 | staticpro (&QCrehash_size); | |
4508 | QCrehash_threshold = intern (":rehash-threshold"); | |
4509 | staticpro (&QCrehash_threshold); | |
ee0403b3 GM |
4510 | QCweakness = intern (":weakness"); |
4511 | staticpro (&QCweakness); | |
f899c503 GM |
4512 | Qkey = intern ("key"); |
4513 | staticpro (&Qkey); | |
4514 | Qvalue = intern ("value"); | |
4515 | staticpro (&Qvalue); | |
d80c6c11 GM |
4516 | Qhash_table_test = intern ("hash-table-test"); |
4517 | staticpro (&Qhash_table_test); | |
4518 | ||
4519 | defsubr (&Ssxhash); | |
4520 | defsubr (&Smake_hash_table); | |
f899c503 | 4521 | defsubr (&Scopy_hash_table); |
d80c6c11 GM |
4522 | defsubr (&Smakehash); |
4523 | defsubr (&Shash_table_count); | |
4524 | defsubr (&Shash_table_rehash_size); | |
4525 | defsubr (&Shash_table_rehash_threshold); | |
4526 | defsubr (&Shash_table_size); | |
4527 | defsubr (&Shash_table_test); | |
e84b1dea | 4528 | defsubr (&Shash_table_weakness); |
d80c6c11 GM |
4529 | defsubr (&Shash_table_p); |
4530 | defsubr (&Sclrhash); | |
4531 | defsubr (&Sgethash); | |
4532 | defsubr (&Sputhash); | |
4533 | defsubr (&Sremhash); | |
4534 | defsubr (&Smaphash); | |
4535 | defsubr (&Sdefine_hash_table_test); | |
4536 | ||
7b863bd5 JB |
4537 | Qstring_lessp = intern ("string-lessp"); |
4538 | staticpro (&Qstring_lessp); | |
68732608 RS |
4539 | Qprovide = intern ("provide"); |
4540 | staticpro (&Qprovide); | |
4541 | Qrequire = intern ("require"); | |
4542 | staticpro (&Qrequire); | |
0ce830bc RS |
4543 | Qyes_or_no_p_history = intern ("yes-or-no-p-history"); |
4544 | staticpro (&Qyes_or_no_p_history); | |
eb4ffa4e RS |
4545 | Qcursor_in_echo_area = intern ("cursor-in-echo-area"); |
4546 | staticpro (&Qcursor_in_echo_area); | |
b4f334f7 KH |
4547 | Qwidget_type = intern ("widget-type"); |
4548 | staticpro (&Qwidget_type); | |
7b863bd5 | 4549 | |
09ab3c3b KH |
4550 | staticpro (&string_char_byte_cache_string); |
4551 | string_char_byte_cache_string = Qnil; | |
4552 | ||
52a9879b RS |
4553 | Fset (Qyes_or_no_p_history, Qnil); |
4554 | ||
7b863bd5 JB |
4555 | DEFVAR_LISP ("features", &Vfeatures, |
4556 | "A list of symbols which are the features of the executing emacs.\n\ | |
4557 | Used by `featurep' and `require', and altered by `provide'."); | |
4558 | Vfeatures = Qnil; | |
4559 | ||
bdd8d692 RS |
4560 | DEFVAR_BOOL ("use-dialog-box", &use_dialog_box, |
4561 | "*Non-nil means mouse commands use dialog boxes to ask questions.\n\ | |
1eb569c5 | 4562 | This applies to y-or-n and yes-or-no questions asked by commands\n\ |
bdd8d692 RS |
4563 | invoked by mouse clicks and mouse menu items."); |
4564 | use_dialog_box = 1; | |
4565 | ||
7b863bd5 JB |
4566 | defsubr (&Sidentity); |
4567 | defsubr (&Srandom); | |
4568 | defsubr (&Slength); | |
5a30fab8 | 4569 | defsubr (&Ssafe_length); |
026f59ce | 4570 | defsubr (&Sstring_bytes); |
7b863bd5 | 4571 | defsubr (&Sstring_equal); |
0e1e9f8d | 4572 | defsubr (&Scompare_strings); |
7b863bd5 JB |
4573 | defsubr (&Sstring_lessp); |
4574 | defsubr (&Sappend); | |
4575 | defsubr (&Sconcat); | |
4576 | defsubr (&Svconcat); | |
4577 | defsubr (&Scopy_sequence); | |
09ab3c3b KH |
4578 | defsubr (&Sstring_make_multibyte); |
4579 | defsubr (&Sstring_make_unibyte); | |
6d475204 RS |
4580 | defsubr (&Sstring_as_multibyte); |
4581 | defsubr (&Sstring_as_unibyte); | |
7b863bd5 JB |
4582 | defsubr (&Scopy_alist); |
4583 | defsubr (&Ssubstring); | |
4584 | defsubr (&Snthcdr); | |
4585 | defsubr (&Snth); | |
4586 | defsubr (&Selt); | |
4587 | defsubr (&Smember); | |
4588 | defsubr (&Smemq); | |
4589 | defsubr (&Sassq); | |
4590 | defsubr (&Sassoc); | |
4591 | defsubr (&Srassq); | |
0fb5a19c | 4592 | defsubr (&Srassoc); |
7b863bd5 | 4593 | defsubr (&Sdelq); |
ca8dd546 | 4594 | defsubr (&Sdelete); |
7b863bd5 JB |
4595 | defsubr (&Snreverse); |
4596 | defsubr (&Sreverse); | |
4597 | defsubr (&Ssort); | |
be9d483d | 4598 | defsubr (&Splist_get); |
7b863bd5 | 4599 | defsubr (&Sget); |
be9d483d | 4600 | defsubr (&Splist_put); |
7b863bd5 JB |
4601 | defsubr (&Sput); |
4602 | defsubr (&Sequal); | |
4603 | defsubr (&Sfillarray); | |
999de246 | 4604 | defsubr (&Schar_table_subtype); |
e03f7933 RS |
4605 | defsubr (&Schar_table_parent); |
4606 | defsubr (&Sset_char_table_parent); | |
4607 | defsubr (&Schar_table_extra_slot); | |
4608 | defsubr (&Sset_char_table_extra_slot); | |
999de246 | 4609 | defsubr (&Schar_table_range); |
e03f7933 | 4610 | defsubr (&Sset_char_table_range); |
e1335ba2 | 4611 | defsubr (&Sset_char_table_default); |
e03f7933 | 4612 | defsubr (&Smap_char_table); |
7b863bd5 JB |
4613 | defsubr (&Snconc); |
4614 | defsubr (&Smapcar); | |
4615 | defsubr (&Smapconcat); | |
4616 | defsubr (&Sy_or_n_p); | |
4617 | defsubr (&Syes_or_no_p); | |
4618 | defsubr (&Sload_average); | |
4619 | defsubr (&Sfeaturep); | |
4620 | defsubr (&Srequire); | |
4621 | defsubr (&Sprovide); | |
b4f334f7 KH |
4622 | defsubr (&Swidget_plist_member); |
4623 | defsubr (&Swidget_put); | |
4624 | defsubr (&Swidget_get); | |
4625 | defsubr (&Swidget_apply); | |
24c129e4 KH |
4626 | defsubr (&Sbase64_encode_region); |
4627 | defsubr (&Sbase64_decode_region); | |
4628 | defsubr (&Sbase64_encode_string); | |
4629 | defsubr (&Sbase64_decode_string); | |
7b863bd5 | 4630 | } |
d80c6c11 GM |
4631 | |
4632 | ||
4633 | void | |
4634 | init_fns () | |
4635 | { | |
4636 | Vweak_hash_tables = Qnil; | |
4637 | } |