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0f2d19dd JB |
1 | /* Copyright (C) 1995,1996 Free Software Foundation, Inc. |
2 | * | |
3 | * This program is free software; you can redistribute it and/or modify | |
4 | * it under the terms of the GNU General Public License as published by | |
5 | * the Free Software Foundation; either version 2, or (at your option) | |
6 | * any later version. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | * GNU General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License | |
14 | * along with this software; see the file COPYING. If not, write to | |
15 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
16 | * | |
17 | * As a special exception, the Free Software Foundation gives permission | |
18 | * for additional uses of the text contained in its release of GUILE. | |
19 | * | |
20 | * The exception is that, if you link the GUILE library with other files | |
21 | * to produce an executable, this does not by itself cause the | |
22 | * resulting executable to be covered by the GNU General Public License. | |
23 | * Your use of that executable is in no way restricted on account of | |
24 | * linking the GUILE library code into it. | |
25 | * | |
26 | * This exception does not however invalidate any other reasons why | |
27 | * the executable file might be covered by the GNU General Public License. | |
28 | * | |
29 | * This exception applies only to the code released by the | |
30 | * Free Software Foundation under the name GUILE. If you copy | |
31 | * code from other Free Software Foundation releases into a copy of | |
32 | * GUILE, as the General Public License permits, the exception does | |
33 | * not apply to the code that you add in this way. To avoid misleading | |
34 | * anyone as to the status of such modified files, you must delete | |
35 | * this exception notice from them. | |
36 | * | |
37 | * If you write modifications of your own for GUILE, it is your choice | |
38 | * whether to permit this exception to apply to your modifications. | |
39 | * If you do not wish that, delete this exception notice. | |
40 | */ | |
41 | \f | |
42 | ||
43 | #include <stdio.h> | |
44 | #include "_scm.h" | |
20e6290e | 45 | #include "chars.h" |
0f2d19dd | 46 | |
20e6290e | 47 | #include "strings.h" |
0f2d19dd JB |
48 | \f |
49 | ||
50 | /* {Strings} | |
51 | */ | |
52 | ||
53 | SCM_PROC(s_string_p, "string?", 1, 0, 0, scm_string_p); | |
54 | #ifdef __STDC__ | |
55 | SCM | |
56 | scm_string_p (SCM x) | |
57 | #else | |
58 | SCM | |
59 | scm_string_p (x) | |
60 | SCM x; | |
61 | #endif | |
62 | { | |
63 | if (SCM_IMP (x)) | |
64 | return SCM_BOOL_F; | |
65 | return SCM_STRINGP (x) ? SCM_BOOL_T : SCM_BOOL_F; | |
66 | } | |
67 | ||
68 | SCM_PROC(s_read_only_string_p, "read-only-string?", 1, 0, 0, scm_read_only_string_p); | |
69 | #ifdef __STDC__ | |
70 | SCM | |
71 | scm_read_only_string_p (SCM x) | |
72 | #else | |
73 | SCM | |
74 | scm_read_only_string_p (x) | |
75 | SCM x; | |
76 | #endif | |
77 | { | |
78 | if (SCM_IMP (x)) | |
79 | return SCM_BOOL_F; | |
80 | return SCM_ROSTRINGP (x) ? SCM_BOOL_T : SCM_BOOL_F; | |
81 | } | |
82 | ||
83 | SCM_PROC(s_list_to_string, "list->string", 1, 0, 0, scm_string); | |
84 | SCM_PROC(s_string, "string", 0, 0, 1, scm_string); | |
85 | #ifdef __STDC__ | |
86 | SCM | |
87 | scm_string (SCM chrs) | |
88 | #else | |
89 | SCM | |
90 | scm_string (chrs) | |
91 | SCM chrs; | |
92 | #endif | |
93 | { | |
94 | SCM res; | |
95 | register char *data; | |
96 | long i; | |
97 | long len; | |
98 | SCM_DEFER_INTS; | |
99 | i = scm_ilength (chrs); | |
100 | if (i < 0) | |
101 | { | |
102 | SCM_ALLOW_INTS; | |
103 | SCM_ASSERT (0, chrs, SCM_ARG1, s_string); | |
104 | } | |
105 | len = 0; | |
106 | { | |
107 | SCM s; | |
108 | ||
109 | for (len = 0, s = chrs; s != SCM_EOL; s = SCM_CDR (s)) | |
110 | if (SCM_ICHRP (SCM_CAR (s))) | |
111 | len += 1; | |
112 | else if (SCM_NIMP (SCM_CAR (s)) && SCM_ROSTRINGP (SCM_CAR (s))) | |
113 | len += SCM_ROLENGTH (SCM_CAR (s)); | |
114 | else | |
115 | { | |
116 | SCM_ALLOW_INTS; | |
117 | SCM_ASSERT (0, s, SCM_ARG1, s_string); | |
118 | } | |
119 | } | |
120 | res = scm_makstr (len, 0); | |
121 | data = SCM_CHARS (res); | |
122 | for (;SCM_NNULLP (chrs);chrs = SCM_CDR (chrs)) | |
123 | { | |
124 | if (SCM_ICHRP (SCM_CAR (chrs))) | |
125 | *data++ = SCM_ICHR (SCM_CAR (chrs)); | |
126 | else | |
127 | { | |
128 | int l; | |
129 | char * c; | |
130 | l = SCM_ROLENGTH (SCM_CAR (chrs)); | |
131 | c = SCM_ROCHARS (SCM_CAR (chrs)); | |
132 | while (l) | |
133 | { | |
134 | --l; | |
135 | *data++ = *c++; | |
136 | } | |
137 | } | |
138 | } | |
139 | SCM_ALLOW_INTS; | |
140 | return res; | |
141 | } | |
142 | ||
143 | #ifdef __STDC__ | |
144 | SCM | |
145 | scm_makstr (long len, int slots) | |
146 | #else | |
147 | SCM | |
148 | scm_makstr (len, slots) | |
149 | long len; | |
150 | int slots; | |
151 | #endif | |
152 | { | |
153 | SCM s; | |
154 | SCM * mem; | |
155 | SCM_NEWCELL (s); | |
156 | --slots; | |
157 | SCM_REDEFER_INTS; | |
158 | mem = (SCM *)scm_must_malloc (sizeof (SCM) * (slots + 1) + len + 1, | |
159 | s_string); | |
160 | if (slots >= 0) | |
161 | { | |
162 | int x; | |
163 | mem[slots] = (SCM)mem; | |
164 | for (x = 0; x < slots; ++x) | |
165 | mem[x] = SCM_BOOL_F; | |
166 | } | |
167 | SCM_SETCHARS (s, (char *) (mem + slots + 1)); | |
168 | SCM_SETLENGTH (s, len, scm_tc7_string); | |
169 | SCM_REALLOW_INTS; | |
170 | SCM_CHARS (s)[len] = 0; | |
171 | return s; | |
172 | } | |
173 | ||
174 | /* converts C scm_array of strings to SCM scm_list of strings. */ | |
175 | /* If argc < 0, a null terminated scm_array is assumed. */ | |
176 | #ifdef __STDC__ | |
177 | SCM | |
178 | scm_makfromstrs (int argc, char **argv) | |
179 | #else | |
180 | SCM | |
181 | scm_makfromstrs (argc, argv) | |
182 | int argc; | |
183 | char **argv; | |
184 | #endif | |
185 | { | |
186 | int i = argc; | |
187 | SCM lst = SCM_EOL; | |
188 | if (0 > i) | |
189 | for (i = 0; argv[i]; i++); | |
190 | while (i--) | |
191 | lst = scm_cons (scm_makfromstr (argv[i], (scm_sizet) strlen (argv[i]), 0), lst); | |
192 | return lst; | |
193 | } | |
194 | ||
195 | ||
196 | #ifdef __STDC__ | |
197 | SCM | |
198 | scm_take0str (char * it) | |
199 | #else | |
200 | SCM | |
201 | scm_take0str (it) | |
202 | char * it; | |
203 | #endif | |
204 | { | |
205 | SCM answer; | |
206 | SCM_NEWCELL (answer); | |
207 | SCM_DEFER_INTS; | |
208 | SCM_SETLENGTH (answer, strlen (it), scm_tc7_string); | |
209 | SCM_SETCHARS (answer, it); | |
210 | SCM_ALLOW_INTS; | |
211 | return answer; | |
212 | } | |
213 | ||
214 | #ifdef __STDC__ | |
215 | SCM | |
216 | scm_makfromstr (const char *src, scm_sizet len, int slots) | |
217 | #else | |
218 | SCM | |
219 | scm_makfromstr (src, len, slots) | |
220 | const char *src; | |
221 | scm_sizet len; | |
222 | int slots; | |
223 | #endif | |
224 | { | |
225 | SCM s; | |
226 | register char *dst; | |
227 | s = scm_makstr ((long) len, slots); | |
228 | dst = SCM_CHARS (s); | |
229 | while (len--) | |
230 | *dst++ = *src++; | |
231 | return s; | |
232 | } | |
233 | ||
234 | ||
235 | #ifdef __STDC__ | |
236 | SCM | |
237 | scm_makfrom0str (char *src) | |
238 | #else | |
239 | SCM | |
240 | scm_makfrom0str (src) | |
241 | char *src; | |
242 | #endif | |
243 | { | |
244 | if (!src) return SCM_BOOL_F; | |
245 | return scm_makfromstr (src, (scm_sizet) strlen (src), 0); | |
246 | } | |
247 | ||
248 | #ifdef __STDC__ | |
249 | SCM | |
250 | scm_makfrom0str_opt (char *src) | |
251 | #else | |
252 | SCM | |
253 | scm_makfrom0str_opt (src) | |
254 | char *src; | |
255 | #endif | |
256 | { | |
257 | return scm_makfrom0str (src); | |
258 | } | |
259 | ||
260 | ||
261 | ||
262 | ||
263 | SCM_PROC(s_make_string, "make-string", 1, 1, 0, scm_make_string); | |
264 | #ifdef __STDC__ | |
265 | SCM | |
266 | scm_make_string (SCM k, SCM chr) | |
267 | #else | |
268 | SCM | |
269 | scm_make_string (k, chr) | |
270 | SCM k; | |
271 | SCM chr; | |
272 | #endif | |
273 | { | |
274 | SCM res; | |
275 | register char *dst; | |
276 | register long i; | |
277 | SCM_ASSERT (SCM_INUMP (k) && (k >= 0), k, SCM_ARG1, s_make_string); | |
278 | i = SCM_INUM (k); | |
279 | res = scm_makstr (i, 0); | |
280 | dst = SCM_CHARS (res); | |
281 | if SCM_ICHRP (chr) | |
282 | { | |
283 | char c = SCM_ICHR (chr); | |
284 | for (i--;i >= 0;i--) | |
285 | { | |
286 | dst[i] = c; | |
287 | } | |
288 | } | |
289 | return res; | |
290 | } | |
291 | ||
292 | SCM_PROC(s_string_length, "string-length", 1, 0, 0, scm_string_length); | |
293 | #ifdef __STDC__ | |
294 | SCM | |
295 | scm_string_length (SCM str) | |
296 | #else | |
297 | SCM | |
298 | scm_string_length (str) | |
299 | SCM str; | |
300 | #endif | |
301 | { | |
302 | SCM_ASSERT (SCM_NIMP (str) && SCM_ROSTRINGP (str), str, SCM_ARG1, s_string_length); | |
303 | return SCM_MAKINUM (SCM_ROLENGTH (str)); | |
304 | } | |
305 | ||
306 | SCM_PROC(s_string_ref, "string-ref", 1, 1, 0, scm_string_ref); | |
307 | #ifdef __STDC__ | |
308 | SCM | |
309 | scm_string_ref (SCM str, SCM k) | |
310 | #else | |
311 | SCM | |
312 | scm_string_ref (str, k) | |
313 | SCM str; | |
314 | SCM k; | |
315 | #endif | |
316 | { | |
317 | SCM_ASSERT (SCM_NIMP (str) && SCM_ROSTRINGP (str), str, SCM_ARG1, s_string_ref); | |
318 | if (k == SCM_UNDEFINED) | |
319 | k = SCM_MAKINUM (0); | |
320 | SCM_ASSERT (SCM_INUMP (k), k, SCM_ARG2, s_string_ref); | |
321 | SCM_ASSERT (SCM_INUM (k) < SCM_ROLENGTH (str) && SCM_INUM (k) >= 0, k, SCM_OUTOFRANGE, s_string_ref); | |
322 | return SCM_MAKICHR (SCM_ROCHARS (str)[SCM_INUM (k)]); | |
323 | } | |
324 | ||
325 | SCM_PROC(s_string_set_x, "string-set!", 3, 0, 0, scm_string_set_x); | |
326 | #ifdef __STDC__ | |
327 | SCM | |
328 | scm_string_set_x (SCM str, SCM k, SCM chr) | |
329 | #else | |
330 | SCM | |
331 | scm_string_set_x (str, k, chr) | |
332 | SCM str; | |
333 | SCM k; | |
334 | SCM chr; | |
335 | #endif | |
336 | { | |
337 | SCM_ASSERT (SCM_NIMP (str) && SCM_STRINGP (str), str, SCM_ARG1, s_string_set_x); | |
338 | SCM_ASSERT (SCM_INUMP (k), k, SCM_ARG2, s_string_set_x); | |
339 | SCM_ASSERT (SCM_ICHRP (chr), chr, SCM_ARG3, s_string_set_x); | |
340 | SCM_ASSERT (SCM_INUM (k) < SCM_LENGTH (str) && SCM_INUM (k) >= 0, k, SCM_OUTOFRANGE, s_string_set_x); | |
341 | SCM_CHARS (str)[SCM_INUM (k)] = SCM_ICHR (chr); | |
342 | return SCM_UNSPECIFIED; | |
343 | } | |
344 | ||
345 | ||
346 | ||
347 | SCM_PROC(s_substring, "substring", 2, 1, 0, scm_substring); | |
348 | #ifdef __STDC__ | |
349 | SCM | |
350 | scm_substring (SCM str, SCM start, SCM end) | |
351 | #else | |
352 | SCM | |
353 | scm_substring (str, start, end) | |
354 | SCM str; | |
355 | SCM start; | |
356 | SCM end; | |
357 | #endif | |
358 | { | |
359 | long l; | |
360 | SCM_ASSERT (SCM_NIMP (str) && SCM_ROSTRINGP (str), | |
361 | str, SCM_ARG1, s_substring); | |
362 | SCM_ASSERT (SCM_INUMP (start), start, SCM_ARG2, s_substring); | |
363 | if (end == SCM_UNDEFINED) | |
364 | end = SCM_MAKINUM (SCM_ROLENGTH (str)); | |
365 | SCM_ASSERT (SCM_INUMP (end), end, SCM_ARG3, s_substring); | |
366 | SCM_ASSERT (SCM_INUM (start) <= SCM_ROLENGTH (str), start, SCM_OUTOFRANGE, s_substring); | |
367 | SCM_ASSERT (SCM_INUM (end) <= SCM_ROLENGTH (str), end, SCM_OUTOFRANGE, s_substring); | |
368 | l = SCM_INUM (end)-SCM_INUM (start); | |
369 | SCM_ASSERT (l >= 0, SCM_MAKINUM (l), SCM_OUTOFRANGE, s_substring); | |
370 | return scm_makfromstr (&SCM_ROCHARS (str)[SCM_INUM (start)], (scm_sizet)l, 0); | |
371 | } | |
372 | ||
373 | SCM_PROC(s_string_append, "string-append", 0, 0, 1, scm_string_append); | |
374 | #ifdef __STDC__ | |
375 | SCM | |
376 | scm_string_append (SCM args) | |
377 | #else | |
378 | SCM | |
379 | scm_string_append (args) | |
380 | SCM args; | |
381 | #endif | |
382 | { | |
383 | SCM res; | |
384 | register long i = 0; | |
385 | register SCM l, s; | |
386 | register char *data; | |
387 | for (l = args;SCM_NIMP (l);) { | |
388 | SCM_ASSERT (SCM_CONSP (l), l, SCM_ARGn, s_string_append); | |
389 | s = SCM_CAR (l); | |
390 | SCM_ASSERT (SCM_NIMP (s) && SCM_ROSTRINGP (s), | |
391 | s, SCM_ARGn, s_string_append); | |
392 | i += SCM_ROLENGTH (s); | |
393 | l = SCM_CDR (l); | |
394 | } | |
395 | SCM_ASSERT (SCM_NULLP (l), args, SCM_ARGn, s_string_append); | |
396 | res = scm_makstr (i, 0); | |
397 | data = SCM_CHARS (res); | |
398 | for (l = args;SCM_NIMP (l);l = SCM_CDR (l)) { | |
399 | s = SCM_CAR (l); | |
400 | for (i = 0;i<SCM_ROLENGTH (s);i++) *data++ = SCM_ROCHARS (s)[i]; | |
401 | } | |
402 | return res; | |
403 | } | |
404 | ||
405 | SCM_PROC(s_make_shared_substring, "make-shared-substring", 1, 2, 0, scm_make_shared_substring); | |
406 | #ifdef __STDC__ | |
407 | SCM | |
408 | scm_make_shared_substring (SCM str, SCM frm, SCM to) | |
409 | #else | |
410 | SCM | |
411 | scm_make_shared_substring (str, frm, to) | |
412 | SCM str; | |
413 | SCM frm; | |
414 | SCM to; | |
415 | #endif | |
416 | { | |
417 | long f; | |
418 | long t; | |
419 | SCM answer; | |
420 | SCM len_str; | |
421 | ||
422 | SCM_ASSERT (SCM_NIMP (str) && SCM_ROSTRINGP (str), str, SCM_ARG1, s_make_shared_substring); | |
423 | ||
424 | if (frm == SCM_UNDEFINED) | |
425 | frm = SCM_MAKINUM (0); | |
426 | else | |
427 | SCM_ASSERT (SCM_INUMP (frm), frm, SCM_ARG2, s_make_shared_substring); | |
428 | ||
429 | if (to == SCM_UNDEFINED) | |
430 | to = SCM_MAKINUM (SCM_ROLENGTH (str)); | |
431 | else | |
432 | SCM_ASSERT (SCM_INUMP (to), to, SCM_ARG3, s_make_shared_substring); | |
433 | ||
434 | f = SCM_INUM (frm); | |
435 | t = SCM_INUM (to); | |
436 | SCM_ASSERT ((f >= 0), frm, SCM_OUTOFRANGE, s_make_shared_substring); | |
437 | SCM_ASSERT ((f <= t) && (t <= SCM_ROLENGTH (str)), to, SCM_OUTOFRANGE, s_make_shared_substring); | |
438 | ||
439 | SCM_NEWCELL (answer); | |
440 | SCM_NEWCELL (len_str); | |
441 | ||
442 | SCM_DEFER_INTS; | |
443 | if (SCM_SUBSTRP (str)) | |
444 | { | |
445 | long offset; | |
446 | offset = SCM_INUM (SCM_SUBSTR_OFFSET (str)); | |
447 | f += offset; | |
448 | t += offset; | |
449 | SCM_SETCAR (len_str, SCM_MAKINUM (f)); | |
450 | SCM_SETCDR (len_str, SCM_SUBSTR_STR (str)); | |
451 | SCM_SETCDR (answer, len_str); | |
452 | SCM_SETLENGTH (answer, t - f, scm_tc7_substring); | |
453 | } | |
454 | else | |
455 | { | |
456 | SCM_SETCAR (len_str, SCM_MAKINUM (f)); | |
457 | SCM_SETCDR (len_str, str); | |
458 | SCM_SETCDR (answer, len_str); | |
459 | SCM_SETLENGTH (answer, t - f, scm_tc7_substring); | |
460 | } | |
461 | SCM_ALLOW_INTS; | |
462 | return answer; | |
463 | } | |
464 | ||
465 | #ifdef __STDC__ | |
466 | void | |
467 | scm_init_strings (void) | |
468 | #else | |
469 | void | |
470 | scm_init_strings () | |
471 | #endif | |
472 | { | |
473 | #include "strings.x" | |
474 | } | |
475 |