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7dc6e754 | 1 | /* Copyright (C) 1995,1996,1998 Free Software Foundation, Inc. |
0f2d19dd JB |
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 | |
82892bed JB |
15 | * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, |
16 | * Boston, MA 02111-1307 USA | |
0f2d19dd JB |
17 | * |
18 | * As a special exception, the Free Software Foundation gives permission | |
19 | * for additional uses of the text contained in its release of GUILE. | |
20 | * | |
21 | * The exception is that, if you link the GUILE library with other files | |
22 | * to produce an executable, this does not by itself cause the | |
23 | * resulting executable to be covered by the GNU General Public License. | |
24 | * Your use of that executable is in no way restricted on account of | |
25 | * linking the GUILE library code into it. | |
26 | * | |
27 | * This exception does not however invalidate any other reasons why | |
28 | * the executable file might be covered by the GNU General Public License. | |
29 | * | |
30 | * This exception applies only to the code released by the | |
31 | * Free Software Foundation under the name GUILE. If you copy | |
32 | * code from other Free Software Foundation releases into a copy of | |
33 | * GUILE, as the General Public License permits, the exception does | |
34 | * not apply to the code that you add in this way. To avoid misleading | |
35 | * anyone as to the status of such modified files, you must delete | |
36 | * this exception notice from them. | |
37 | * | |
38 | * If you write modifications of your own for GUILE, it is your choice | |
39 | * whether to permit this exception to apply to your modifications. | |
82892bed | 40 | * If you do not wish that, delete this exception notice. */ |
0f2d19dd JB |
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); | |
1cc91f1b | 54 | |
0f2d19dd JB |
55 | SCM |
56 | scm_string_p (x) | |
57 | SCM x; | |
0f2d19dd JB |
58 | { |
59 | if (SCM_IMP (x)) | |
60 | return SCM_BOOL_F; | |
61 | return SCM_STRINGP (x) ? SCM_BOOL_T : SCM_BOOL_F; | |
62 | } | |
63 | ||
64 | SCM_PROC(s_read_only_string_p, "read-only-string?", 1, 0, 0, scm_read_only_string_p); | |
1cc91f1b | 65 | |
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66 | SCM |
67 | scm_read_only_string_p (x) | |
68 | SCM x; | |
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69 | { |
70 | if (SCM_IMP (x)) | |
71 | return SCM_BOOL_F; | |
72 | return SCM_ROSTRINGP (x) ? SCM_BOOL_T : SCM_BOOL_F; | |
73 | } | |
74 | ||
75 | SCM_PROC(s_list_to_string, "list->string", 1, 0, 0, scm_string); | |
76 | SCM_PROC(s_string, "string", 0, 0, 1, scm_string); | |
1cc91f1b | 77 | |
0f2d19dd JB |
78 | SCM |
79 | scm_string (chrs) | |
80 | SCM chrs; | |
0f2d19dd JB |
81 | { |
82 | SCM res; | |
a65b9c80 | 83 | register unsigned char *data; |
0f2d19dd JB |
84 | long i; |
85 | long len; | |
86 | SCM_DEFER_INTS; | |
87 | i = scm_ilength (chrs); | |
88 | if (i < 0) | |
89 | { | |
90 | SCM_ALLOW_INTS; | |
91 | SCM_ASSERT (0, chrs, SCM_ARG1, s_string); | |
92 | } | |
93 | len = 0; | |
94 | { | |
95 | SCM s; | |
96 | ||
97 | for (len = 0, s = chrs; s != SCM_EOL; s = SCM_CDR (s)) | |
98 | if (SCM_ICHRP (SCM_CAR (s))) | |
99 | len += 1; | |
100 | else if (SCM_NIMP (SCM_CAR (s)) && SCM_ROSTRINGP (SCM_CAR (s))) | |
101 | len += SCM_ROLENGTH (SCM_CAR (s)); | |
102 | else | |
103 | { | |
104 | SCM_ALLOW_INTS; | |
105 | SCM_ASSERT (0, s, SCM_ARG1, s_string); | |
106 | } | |
107 | } | |
108 | res = scm_makstr (len, 0); | |
a65b9c80 | 109 | data = SCM_UCHARS (res); |
0f2d19dd JB |
110 | for (;SCM_NNULLP (chrs);chrs = SCM_CDR (chrs)) |
111 | { | |
112 | if (SCM_ICHRP (SCM_CAR (chrs))) | |
113 | *data++ = SCM_ICHR (SCM_CAR (chrs)); | |
114 | else | |
115 | { | |
116 | int l; | |
117 | char * c; | |
118 | l = SCM_ROLENGTH (SCM_CAR (chrs)); | |
cdbadcac | 119 | c = SCM_ROCHARS (SCM_CAR (chrs)); |
0f2d19dd JB |
120 | while (l) |
121 | { | |
122 | --l; | |
123 | *data++ = *c++; | |
124 | } | |
125 | } | |
126 | } | |
127 | SCM_ALLOW_INTS; | |
128 | return res; | |
129 | } | |
130 | ||
1cc91f1b | 131 | |
0f2d19dd JB |
132 | SCM |
133 | scm_makstr (len, slots) | |
134 | long len; | |
135 | int slots; | |
0f2d19dd JB |
136 | { |
137 | SCM s; | |
138 | SCM * mem; | |
139 | SCM_NEWCELL (s); | |
140 | --slots; | |
141 | SCM_REDEFER_INTS; | |
142 | mem = (SCM *)scm_must_malloc (sizeof (SCM) * (slots + 1) + len + 1, | |
143 | s_string); | |
144 | if (slots >= 0) | |
145 | { | |
146 | int x; | |
147 | mem[slots] = (SCM)mem; | |
148 | for (x = 0; x < slots; ++x) | |
149 | mem[x] = SCM_BOOL_F; | |
150 | } | |
151 | SCM_SETCHARS (s, (char *) (mem + slots + 1)); | |
152 | SCM_SETLENGTH (s, len, scm_tc7_string); | |
153 | SCM_REALLOW_INTS; | |
154 | SCM_CHARS (s)[len] = 0; | |
155 | return s; | |
156 | } | |
157 | ||
158 | /* converts C scm_array of strings to SCM scm_list of strings. */ | |
159 | /* If argc < 0, a null terminated scm_array is assumed. */ | |
1cc91f1b | 160 | |
0f2d19dd JB |
161 | SCM |
162 | scm_makfromstrs (argc, argv) | |
163 | int argc; | |
164 | char **argv; | |
0f2d19dd JB |
165 | { |
166 | int i = argc; | |
167 | SCM lst = SCM_EOL; | |
168 | if (0 > i) | |
169 | for (i = 0; argv[i]; i++); | |
170 | while (i--) | |
171 | lst = scm_cons (scm_makfromstr (argv[i], (scm_sizet) strlen (argv[i]), 0), lst); | |
172 | return lst; | |
173 | } | |
174 | ||
175 | ||
1cc91f1b | 176 | |
0f2d19dd JB |
177 | SCM |
178 | scm_take0str (it) | |
179 | char * it; | |
0f2d19dd JB |
180 | { |
181 | SCM answer; | |
182 | SCM_NEWCELL (answer); | |
183 | SCM_DEFER_INTS; | |
184 | SCM_SETLENGTH (answer, strlen (it), scm_tc7_string); | |
185 | SCM_SETCHARS (answer, it); | |
186 | SCM_ALLOW_INTS; | |
187 | return answer; | |
188 | } | |
189 | ||
1cc91f1b | 190 | |
0f2d19dd JB |
191 | SCM |
192 | scm_makfromstr (src, len, slots) | |
193 | const char *src; | |
194 | scm_sizet len; | |
195 | int slots; | |
0f2d19dd JB |
196 | { |
197 | SCM s; | |
198 | register char *dst; | |
199 | s = scm_makstr ((long) len, slots); | |
200 | dst = SCM_CHARS (s); | |
201 | while (len--) | |
202 | *dst++ = *src++; | |
203 | return s; | |
204 | } | |
205 | ||
206 | ||
1cc91f1b | 207 | |
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208 | SCM |
209 | scm_makfrom0str (src) | |
dbece3a2 | 210 | const char *src; |
0f2d19dd JB |
211 | { |
212 | if (!src) return SCM_BOOL_F; | |
213 | return scm_makfromstr (src, (scm_sizet) strlen (src), 0); | |
214 | } | |
215 | ||
1cc91f1b | 216 | |
0f2d19dd JB |
217 | SCM |
218 | scm_makfrom0str_opt (src) | |
dbece3a2 | 219 | const char *src; |
0f2d19dd JB |
220 | { |
221 | return scm_makfrom0str (src); | |
222 | } | |
223 | ||
224 | ||
225 | ||
226 | ||
227 | SCM_PROC(s_make_string, "make-string", 1, 1, 0, scm_make_string); | |
1cc91f1b | 228 | |
0f2d19dd JB |
229 | SCM |
230 | scm_make_string (k, chr) | |
231 | SCM k; | |
232 | SCM chr; | |
0f2d19dd JB |
233 | { |
234 | SCM res; | |
a65b9c80 | 235 | register unsigned char *dst; |
0f2d19dd JB |
236 | register long i; |
237 | SCM_ASSERT (SCM_INUMP (k) && (k >= 0), k, SCM_ARG1, s_make_string); | |
238 | i = SCM_INUM (k); | |
239 | res = scm_makstr (i, 0); | |
a65b9c80 | 240 | dst = SCM_UCHARS (res); |
0f2d19dd JB |
241 | if SCM_ICHRP (chr) |
242 | { | |
243 | char c = SCM_ICHR (chr); | |
244 | for (i--;i >= 0;i--) | |
245 | { | |
246 | dst[i] = c; | |
247 | } | |
248 | } | |
249 | return res; | |
250 | } | |
251 | ||
252 | SCM_PROC(s_string_length, "string-length", 1, 0, 0, scm_string_length); | |
1cc91f1b | 253 | |
0f2d19dd JB |
254 | SCM |
255 | scm_string_length (str) | |
256 | SCM str; | |
0f2d19dd JB |
257 | { |
258 | SCM_ASSERT (SCM_NIMP (str) && SCM_ROSTRINGP (str), str, SCM_ARG1, s_string_length); | |
259 | return SCM_MAKINUM (SCM_ROLENGTH (str)); | |
260 | } | |
261 | ||
262 | SCM_PROC(s_string_ref, "string-ref", 1, 1, 0, scm_string_ref); | |
1cc91f1b | 263 | |
0f2d19dd JB |
264 | SCM |
265 | scm_string_ref (str, k) | |
266 | SCM str; | |
267 | SCM k; | |
0f2d19dd JB |
268 | { |
269 | SCM_ASSERT (SCM_NIMP (str) && SCM_ROSTRINGP (str), str, SCM_ARG1, s_string_ref); | |
270 | if (k == SCM_UNDEFINED) | |
271 | k = SCM_MAKINUM (0); | |
272 | SCM_ASSERT (SCM_INUMP (k), k, SCM_ARG2, s_string_ref); | |
273 | SCM_ASSERT (SCM_INUM (k) < SCM_ROLENGTH (str) && SCM_INUM (k) >= 0, k, SCM_OUTOFRANGE, s_string_ref); | |
a65b9c80 | 274 | return SCM_MAKICHR (SCM_ROUCHARS (str)[SCM_INUM (k)]); |
0f2d19dd JB |
275 | } |
276 | ||
277 | SCM_PROC(s_string_set_x, "string-set!", 3, 0, 0, scm_string_set_x); | |
1cc91f1b | 278 | |
0f2d19dd JB |
279 | SCM |
280 | scm_string_set_x (str, k, chr) | |
281 | SCM str; | |
282 | SCM k; | |
283 | SCM chr; | |
0f2d19dd | 284 | { |
82637e2b JB |
285 | SCM_ASSERT (SCM_NIMP (str) && SCM_STRINGP (str), |
286 | str, SCM_ARG1, s_string_set_x); | |
0f2d19dd JB |
287 | SCM_ASSERT (SCM_INUMP (k), k, SCM_ARG2, s_string_set_x); |
288 | SCM_ASSERT (SCM_ICHRP (chr), chr, SCM_ARG3, s_string_set_x); | |
82637e2b JB |
289 | if (! SCM_RWSTRINGP (str)) |
290 | scm_misc_error (s_string_set_x, "argument is a read-only string", str); | |
cc5ca028 JB |
291 | SCM_ASSERT ((SCM_INUM (k) >= 0 |
292 | && ((unsigned) SCM_INUM (k)) < SCM_LENGTH (str)), | |
82637e2b | 293 | k, SCM_OUTOFRANGE, s_string_set_x); |
a65b9c80 | 294 | SCM_UCHARS (str)[SCM_INUM (k)] = SCM_ICHR (chr); |
0f2d19dd JB |
295 | return SCM_UNSPECIFIED; |
296 | } | |
297 | ||
298 | ||
299 | ||
300 | SCM_PROC(s_substring, "substring", 2, 1, 0, scm_substring); | |
1cc91f1b | 301 | |
0f2d19dd JB |
302 | SCM |
303 | scm_substring (str, start, end) | |
304 | SCM str; | |
305 | SCM start; | |
306 | SCM end; | |
0f2d19dd JB |
307 | { |
308 | long l; | |
309 | SCM_ASSERT (SCM_NIMP (str) && SCM_ROSTRINGP (str), | |
310 | str, SCM_ARG1, s_substring); | |
311 | SCM_ASSERT (SCM_INUMP (start), start, SCM_ARG2, s_substring); | |
312 | if (end == SCM_UNDEFINED) | |
313 | end = SCM_MAKINUM (SCM_ROLENGTH (str)); | |
314 | SCM_ASSERT (SCM_INUMP (end), end, SCM_ARG3, s_substring); | |
315 | SCM_ASSERT (SCM_INUM (start) <= SCM_ROLENGTH (str), start, SCM_OUTOFRANGE, s_substring); | |
316 | SCM_ASSERT (SCM_INUM (end) <= SCM_ROLENGTH (str), end, SCM_OUTOFRANGE, s_substring); | |
317 | l = SCM_INUM (end)-SCM_INUM (start); | |
318 | SCM_ASSERT (l >= 0, SCM_MAKINUM (l), SCM_OUTOFRANGE, s_substring); | |
319 | return scm_makfromstr (&SCM_ROCHARS (str)[SCM_INUM (start)], (scm_sizet)l, 0); | |
320 | } | |
321 | ||
322 | SCM_PROC(s_string_append, "string-append", 0, 0, 1, scm_string_append); | |
1cc91f1b | 323 | |
0f2d19dd JB |
324 | SCM |
325 | scm_string_append (args) | |
326 | SCM args; | |
0f2d19dd JB |
327 | { |
328 | SCM res; | |
329 | register long i = 0; | |
330 | register SCM l, s; | |
a65b9c80 | 331 | register unsigned char *data; |
0f2d19dd JB |
332 | for (l = args;SCM_NIMP (l);) { |
333 | SCM_ASSERT (SCM_CONSP (l), l, SCM_ARGn, s_string_append); | |
334 | s = SCM_CAR (l); | |
335 | SCM_ASSERT (SCM_NIMP (s) && SCM_ROSTRINGP (s), | |
336 | s, SCM_ARGn, s_string_append); | |
337 | i += SCM_ROLENGTH (s); | |
338 | l = SCM_CDR (l); | |
339 | } | |
340 | SCM_ASSERT (SCM_NULLP (l), args, SCM_ARGn, s_string_append); | |
341 | res = scm_makstr (i, 0); | |
a65b9c80 | 342 | data = SCM_UCHARS (res); |
0f2d19dd JB |
343 | for (l = args;SCM_NIMP (l);l = SCM_CDR (l)) { |
344 | s = SCM_CAR (l); | |
a65b9c80 | 345 | for (i = 0;i<SCM_ROLENGTH (s);i++) *data++ = SCM_ROUCHARS (s)[i]; |
0f2d19dd JB |
346 | } |
347 | return res; | |
348 | } | |
349 | ||
350 | SCM_PROC(s_make_shared_substring, "make-shared-substring", 1, 2, 0, scm_make_shared_substring); | |
1cc91f1b | 351 | |
0f2d19dd JB |
352 | SCM |
353 | scm_make_shared_substring (str, frm, to) | |
354 | SCM str; | |
355 | SCM frm; | |
356 | SCM to; | |
0f2d19dd JB |
357 | { |
358 | long f; | |
359 | long t; | |
360 | SCM answer; | |
361 | SCM len_str; | |
362 | ||
363 | SCM_ASSERT (SCM_NIMP (str) && SCM_ROSTRINGP (str), str, SCM_ARG1, s_make_shared_substring); | |
364 | ||
365 | if (frm == SCM_UNDEFINED) | |
366 | frm = SCM_MAKINUM (0); | |
367 | else | |
368 | SCM_ASSERT (SCM_INUMP (frm), frm, SCM_ARG2, s_make_shared_substring); | |
369 | ||
370 | if (to == SCM_UNDEFINED) | |
371 | to = SCM_MAKINUM (SCM_ROLENGTH (str)); | |
372 | else | |
373 | SCM_ASSERT (SCM_INUMP (to), to, SCM_ARG3, s_make_shared_substring); | |
374 | ||
375 | f = SCM_INUM (frm); | |
376 | t = SCM_INUM (to); | |
377 | SCM_ASSERT ((f >= 0), frm, SCM_OUTOFRANGE, s_make_shared_substring); | |
c2cb2500 JB |
378 | SCM_ASSERT ((f <= t) && (t <= SCM_ROLENGTH (str)), to, SCM_OUTOFRANGE, |
379 | s_make_shared_substring); | |
0f2d19dd JB |
380 | |
381 | SCM_NEWCELL (answer); | |
382 | SCM_NEWCELL (len_str); | |
383 | ||
384 | SCM_DEFER_INTS; | |
385 | if (SCM_SUBSTRP (str)) | |
386 | { | |
387 | long offset; | |
388 | offset = SCM_INUM (SCM_SUBSTR_OFFSET (str)); | |
389 | f += offset; | |
390 | t += offset; | |
391 | SCM_SETCAR (len_str, SCM_MAKINUM (f)); | |
392 | SCM_SETCDR (len_str, SCM_SUBSTR_STR (str)); | |
393 | SCM_SETCDR (answer, len_str); | |
394 | SCM_SETLENGTH (answer, t - f, scm_tc7_substring); | |
395 | } | |
396 | else | |
397 | { | |
398 | SCM_SETCAR (len_str, SCM_MAKINUM (f)); | |
399 | SCM_SETCDR (len_str, str); | |
400 | SCM_SETCDR (answer, len_str); | |
401 | SCM_SETLENGTH (answer, t - f, scm_tc7_substring); | |
402 | } | |
403 | SCM_ALLOW_INTS; | |
404 | return answer; | |
405 | } | |
406 | ||
1cc91f1b | 407 | |
0f2d19dd JB |
408 | void |
409 | scm_init_strings () | |
0f2d19dd JB |
410 | { |
411 | #include "strings.x" | |
412 | } | |
413 |