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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. */ |
1bbd0b84 GB |
41 | |
42 | /* Software engineering face-lift by Greg J. Badros, 11-Dec-1999, | |
43 | gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */ | |
44 | ||
0f2d19dd JB |
45 | \f |
46 | ||
47 | #include <stdio.h> | |
48 | #include "_scm.h" | |
20e6290e | 49 | #include "chars.h" |
0f2d19dd | 50 | |
20e6290e | 51 | #include "strings.h" |
1bbd0b84 | 52 | #include "scm_validate.h" |
0f2d19dd JB |
53 | \f |
54 | ||
55 | /* {Strings} | |
56 | */ | |
57 | ||
1bbd0b84 GB |
58 | GUILE_PROC(scm_string_p, "string?", 1, 0, 0, |
59 | (SCM x), | |
60 | "") | |
61 | #define FUNC_NAME s_scm_string_p | |
0f2d19dd JB |
62 | { |
63 | if (SCM_IMP (x)) | |
64 | return SCM_BOOL_F; | |
1bbd0b84 | 65 | return SCM_BOOL(SCM_STRINGP (x)); |
0f2d19dd | 66 | } |
1bbd0b84 | 67 | #undef FUNC_NAME |
0f2d19dd | 68 | |
1bbd0b84 GB |
69 | GUILE_PROC(scm_read_only_string_p, "read-only-string?", 1, 0, 0, |
70 | (SCM x), | |
71 | "") | |
72 | #define FUNC_NAME s_scm_read_only_string_p | |
0f2d19dd JB |
73 | { |
74 | if (SCM_IMP (x)) | |
75 | return SCM_BOOL_F; | |
1bbd0b84 | 76 | return SCM_BOOL(SCM_ROSTRINGP (x)); |
0f2d19dd | 77 | } |
1bbd0b84 | 78 | #undef FUNC_NAME |
0f2d19dd | 79 | |
1bbd0b84 | 80 | SCM_REGISTER_PROC(s_list_to_string, "list->string", 1, 0, 0, scm_string); |
1cc91f1b | 81 | |
1bbd0b84 GB |
82 | |
83 | GUILE_PROC(scm_string, "string", 0, 0, 1, | |
84 | (SCM chrs), | |
85 | "") | |
86 | #define FUNC_NAME s_scm_string | |
0f2d19dd JB |
87 | { |
88 | SCM res; | |
a65b9c80 | 89 | register unsigned char *data; |
0f2d19dd JB |
90 | long i; |
91 | long len; | |
92 | SCM_DEFER_INTS; | |
93 | i = scm_ilength (chrs); | |
94 | if (i < 0) | |
95 | { | |
96 | SCM_ALLOW_INTS; | |
1bbd0b84 | 97 | SCM_ASSERT (0, chrs, SCM_ARG1, FUNC_NAME); |
0f2d19dd JB |
98 | } |
99 | len = 0; | |
100 | { | |
101 | SCM s; | |
102 | ||
103 | for (len = 0, s = chrs; s != SCM_EOL; s = SCM_CDR (s)) | |
104 | if (SCM_ICHRP (SCM_CAR (s))) | |
105 | len += 1; | |
106 | else if (SCM_NIMP (SCM_CAR (s)) && SCM_ROSTRINGP (SCM_CAR (s))) | |
107 | len += SCM_ROLENGTH (SCM_CAR (s)); | |
108 | else | |
109 | { | |
110 | SCM_ALLOW_INTS; | |
1bbd0b84 | 111 | SCM_ASSERT (0, s, SCM_ARG1, FUNC_NAME); |
0f2d19dd JB |
112 | } |
113 | } | |
114 | res = scm_makstr (len, 0); | |
a65b9c80 | 115 | data = SCM_UCHARS (res); |
0f2d19dd JB |
116 | for (;SCM_NNULLP (chrs);chrs = SCM_CDR (chrs)) |
117 | { | |
118 | if (SCM_ICHRP (SCM_CAR (chrs))) | |
119 | *data++ = SCM_ICHR (SCM_CAR (chrs)); | |
120 | else | |
121 | { | |
122 | int l; | |
123 | char * c; | |
124 | l = SCM_ROLENGTH (SCM_CAR (chrs)); | |
cdbadcac | 125 | c = SCM_ROCHARS (SCM_CAR (chrs)); |
0f2d19dd JB |
126 | while (l) |
127 | { | |
128 | --l; | |
129 | *data++ = *c++; | |
130 | } | |
131 | } | |
132 | } | |
133 | SCM_ALLOW_INTS; | |
134 | return res; | |
135 | } | |
1bbd0b84 | 136 | #undef FUNC_NAME |
0f2d19dd | 137 | |
1cc91f1b | 138 | |
0f2d19dd | 139 | SCM |
1bbd0b84 | 140 | scm_makstr (long len, int slots) |
0f2d19dd JB |
141 | { |
142 | SCM s; | |
143 | SCM * mem; | |
144 | SCM_NEWCELL (s); | |
145 | --slots; | |
146 | SCM_REDEFER_INTS; | |
147 | mem = (SCM *)scm_must_malloc (sizeof (SCM) * (slots + 1) + len + 1, | |
1bbd0b84 | 148 | "scm_makstr"); |
0f2d19dd JB |
149 | if (slots >= 0) |
150 | { | |
151 | int x; | |
152 | mem[slots] = (SCM)mem; | |
153 | for (x = 0; x < slots; ++x) | |
154 | mem[x] = SCM_BOOL_F; | |
155 | } | |
156 | SCM_SETCHARS (s, (char *) (mem + slots + 1)); | |
157 | SCM_SETLENGTH (s, len, scm_tc7_string); | |
158 | SCM_REALLOW_INTS; | |
159 | SCM_CHARS (s)[len] = 0; | |
160 | return s; | |
161 | } | |
162 | ||
163 | /* converts C scm_array of strings to SCM scm_list of strings. */ | |
164 | /* If argc < 0, a null terminated scm_array is assumed. */ | |
1cc91f1b | 165 | |
0f2d19dd | 166 | SCM |
1bbd0b84 | 167 | scm_makfromstrs (int argc, char **argv) |
0f2d19dd JB |
168 | { |
169 | int i = argc; | |
170 | SCM lst = SCM_EOL; | |
171 | if (0 > i) | |
172 | for (i = 0; argv[i]; i++); | |
173 | while (i--) | |
174 | lst = scm_cons (scm_makfromstr (argv[i], (scm_sizet) strlen (argv[i]), 0), lst); | |
175 | return lst; | |
176 | } | |
177 | ||
178 | ||
ee149d03 JB |
179 | /* This function must only be applied to memory obtained via malloc, |
180 | since the GC is going to apply `free' to it when the string is | |
181 | dropped. | |
182 | ||
183 | Also, s[len] must be `\0', since we promise that strings are | |
184 | null-terminated. Perhaps we could handle non-null-terminated | |
185 | strings by claiming they're shared substrings of a string we just | |
186 | made up. */ | |
0f2d19dd | 187 | SCM |
ee149d03 | 188 | scm_take_str (char *s, int len) |
0f2d19dd JB |
189 | { |
190 | SCM answer; | |
191 | SCM_NEWCELL (answer); | |
192 | SCM_DEFER_INTS; | |
ee149d03 JB |
193 | SCM_SETLENGTH (answer, len, scm_tc7_string); |
194 | scm_done_malloc (len + 1); | |
195 | SCM_SETCHARS (answer, s); | |
0f2d19dd JB |
196 | SCM_ALLOW_INTS; |
197 | return answer; | |
198 | } | |
199 | ||
ee149d03 JB |
200 | /* `s' must be a malloc'd string. See scm_take_str. */ |
201 | SCM | |
202 | scm_take0str (char *s) | |
203 | { | |
204 | return scm_take_str (s, strlen (s)); | |
205 | } | |
206 | ||
1cc91f1b | 207 | |
0f2d19dd | 208 | SCM |
1bbd0b84 | 209 | scm_makfromstr (const char *src, scm_sizet len, int slots) |
0f2d19dd JB |
210 | { |
211 | SCM s; | |
212 | register char *dst; | |
213 | s = scm_makstr ((long) len, slots); | |
214 | dst = SCM_CHARS (s); | |
215 | while (len--) | |
216 | *dst++ = *src++; | |
217 | return s; | |
218 | } | |
219 | ||
220 | ||
1cc91f1b | 221 | |
0f2d19dd | 222 | SCM |
1bbd0b84 | 223 | scm_makfrom0str (const char *src) |
0f2d19dd JB |
224 | { |
225 | if (!src) return SCM_BOOL_F; | |
226 | return scm_makfromstr (src, (scm_sizet) strlen (src), 0); | |
227 | } | |
228 | ||
1cc91f1b | 229 | |
0f2d19dd | 230 | SCM |
1bbd0b84 | 231 | scm_makfrom0str_opt (const char *src) |
0f2d19dd JB |
232 | { |
233 | return scm_makfrom0str (src); | |
234 | } | |
235 | ||
236 | ||
237 | ||
238 | ||
1bbd0b84 GB |
239 | GUILE_PROC(scm_make_string, "make-string", 1, 1, 0, |
240 | (SCM k, SCM chr), | |
241 | "") | |
242 | #define FUNC_NAME s_scm_make_string | |
0f2d19dd JB |
243 | { |
244 | SCM res; | |
0f2d19dd | 245 | register long i; |
1bbd0b84 | 246 | SCM_VALIDATE_INT_MIN_COPY(1,k,0,i); |
0f2d19dd | 247 | res = scm_makstr (i, 0); |
6c951427 | 248 | if (!SCM_UNBNDP (chr)) |
0f2d19dd | 249 | { |
1bbd0b84 | 250 | SCM_VALIDATE_CHAR(2,chr); |
6c951427 GH |
251 | { |
252 | unsigned char *dst = SCM_UCHARS (res); | |
253 | char c = SCM_ICHR (chr); | |
254 | ||
255 | memset (dst, c, i); | |
256 | } | |
0f2d19dd JB |
257 | } |
258 | return res; | |
259 | } | |
1bbd0b84 | 260 | #undef FUNC_NAME |
0f2d19dd | 261 | |
1bbd0b84 GB |
262 | GUILE_PROC(scm_string_length, "string-length", 1, 0, 0, |
263 | (SCM str), | |
264 | "") | |
265 | #define FUNC_NAME s_scm_string_length | |
0f2d19dd | 266 | { |
1bbd0b84 | 267 | SCM_VALIDATE_ROSTRING(1,str); |
0f2d19dd JB |
268 | return SCM_MAKINUM (SCM_ROLENGTH (str)); |
269 | } | |
1bbd0b84 | 270 | #undef FUNC_NAME |
0f2d19dd | 271 | |
1bbd0b84 GB |
272 | GUILE_PROC(scm_string_ref, "string-ref", 1, 1, 0, |
273 | (SCM str, SCM k), | |
274 | "") | |
275 | #define FUNC_NAME s_scm_string_ref | |
0f2d19dd | 276 | { |
1bbd0b84 GB |
277 | SCM_VALIDATE_ROSTRING(1,str); |
278 | SCM_VALIDATE_INT_DEF(2,k,0); | |
279 | SCM_ASSERT (SCM_INUM (k) < SCM_ROLENGTH (str) && SCM_INUM (k) >= 0, k, SCM_OUTOFRANGE, FUNC_NAME); | |
a65b9c80 | 280 | return SCM_MAKICHR (SCM_ROUCHARS (str)[SCM_INUM (k)]); |
0f2d19dd | 281 | } |
1bbd0b84 | 282 | #undef FUNC_NAME |
0f2d19dd | 283 | |
1bbd0b84 GB |
284 | GUILE_PROC(scm_string_set_x, "string-set!", 3, 0, 0, |
285 | (SCM str, SCM k, SCM chr), | |
286 | "") | |
287 | #define FUNC_NAME s_scm_string_set_x | |
0f2d19dd | 288 | { |
1bbd0b84 GB |
289 | SCM_VALIDATE_RWSTRING(1,str); |
290 | SCM_VALIDATE_INT_RANGE(2,k,0,SCM_LENGTH(str)); | |
291 | SCM_VALIDATE_CHAR(3,chr); | |
a65b9c80 | 292 | SCM_UCHARS (str)[SCM_INUM (k)] = SCM_ICHR (chr); |
0f2d19dd JB |
293 | return SCM_UNSPECIFIED; |
294 | } | |
1bbd0b84 | 295 | #undef FUNC_NAME |
0f2d19dd JB |
296 | |
297 | ||
298 | ||
1bbd0b84 GB |
299 | GUILE_PROC(scm_substring, "substring", 2, 1, 0, |
300 | (SCM str, SCM start, SCM end), | |
301 | "") | |
302 | #define FUNC_NAME s_scm_substring | |
0f2d19dd JB |
303 | { |
304 | long l; | |
1bbd0b84 GB |
305 | SCM_VALIDATE_ROSTRING(1,str); |
306 | SCM_VALIDATE_INT(2,start); | |
307 | SCM_VALIDATE_INT_DEF(3,end,SCM_ROLENGTH(str)); | |
308 | SCM_ASSERT (SCM_INUM (start) <= SCM_ROLENGTH (str), start, SCM_OUTOFRANGE, FUNC_NAME); | |
309 | SCM_ASSERT (SCM_INUM (end) <= SCM_ROLENGTH (str), end, SCM_OUTOFRANGE, FUNC_NAME); | |
0f2d19dd | 310 | l = SCM_INUM (end)-SCM_INUM (start); |
1bbd0b84 | 311 | SCM_ASSERT (l >= 0, SCM_MAKINUM (l), SCM_OUTOFRANGE, FUNC_NAME); |
0f2d19dd JB |
312 | return scm_makfromstr (&SCM_ROCHARS (str)[SCM_INUM (start)], (scm_sizet)l, 0); |
313 | } | |
1bbd0b84 | 314 | #undef FUNC_NAME |
0f2d19dd | 315 | |
1bbd0b84 GB |
316 | GUILE_PROC(scm_string_append, "string-append", 0, 0, 1, |
317 | (SCM args), | |
318 | "") | |
319 | #define FUNC_NAME s_scm_string_append | |
0f2d19dd JB |
320 | { |
321 | SCM res; | |
322 | register long i = 0; | |
323 | register SCM l, s; | |
a65b9c80 | 324 | register unsigned char *data; |
0f2d19dd | 325 | for (l = args;SCM_NIMP (l);) { |
1bbd0b84 | 326 | SCM_ASSERT (SCM_CONSP (l), l, SCM_ARGn, FUNC_NAME); |
0f2d19dd | 327 | s = SCM_CAR (l); |
1bbd0b84 | 328 | SCM_VALIDATE_ROSTRING(SCM_ARGn,s); |
0f2d19dd JB |
329 | i += SCM_ROLENGTH (s); |
330 | l = SCM_CDR (l); | |
331 | } | |
1bbd0b84 | 332 | SCM_ASSERT (SCM_NULLP (l), args, SCM_ARGn, FUNC_NAME); |
0f2d19dd | 333 | res = scm_makstr (i, 0); |
a65b9c80 | 334 | data = SCM_UCHARS (res); |
0f2d19dd JB |
335 | for (l = args;SCM_NIMP (l);l = SCM_CDR (l)) { |
336 | s = SCM_CAR (l); | |
a65b9c80 | 337 | for (i = 0;i<SCM_ROLENGTH (s);i++) *data++ = SCM_ROUCHARS (s)[i]; |
0f2d19dd JB |
338 | } |
339 | return res; | |
340 | } | |
1bbd0b84 | 341 | #undef FUNC_NAME |
0f2d19dd | 342 | |
1bbd0b84 GB |
343 | GUILE_PROC(scm_make_shared_substring, "make-shared-substring", 1, 2, 0, |
344 | (SCM str, SCM frm, SCM to), | |
345 | "") | |
346 | #define FUNC_NAME s_scm_make_shared_substring | |
0f2d19dd JB |
347 | { |
348 | long f; | |
349 | long t; | |
350 | SCM answer; | |
351 | SCM len_str; | |
352 | ||
1bbd0b84 GB |
353 | SCM_VALIDATE_ROSTRING(1,str); |
354 | SCM_VALIDATE_INT_DEF_COPY(2,frm,0,f); | |
355 | SCM_VALIDATE_INT_DEF_COPY(3,to,0,t); | |
0f2d19dd | 356 | |
1bbd0b84 | 357 | SCM_ASSERT ((f >= 0), frm, SCM_OUTOFRANGE, FUNC_NAME); |
c2cb2500 | 358 | SCM_ASSERT ((f <= t) && (t <= SCM_ROLENGTH (str)), to, SCM_OUTOFRANGE, |
1bbd0b84 | 359 | FUNC_NAME); |
0f2d19dd JB |
360 | |
361 | SCM_NEWCELL (answer); | |
362 | SCM_NEWCELL (len_str); | |
363 | ||
364 | SCM_DEFER_INTS; | |
365 | if (SCM_SUBSTRP (str)) | |
366 | { | |
367 | long offset; | |
368 | offset = SCM_INUM (SCM_SUBSTR_OFFSET (str)); | |
369 | f += offset; | |
370 | t += offset; | |
371 | SCM_SETCAR (len_str, SCM_MAKINUM (f)); | |
372 | SCM_SETCDR (len_str, SCM_SUBSTR_STR (str)); | |
373 | SCM_SETCDR (answer, len_str); | |
374 | SCM_SETLENGTH (answer, t - f, scm_tc7_substring); | |
375 | } | |
376 | else | |
377 | { | |
378 | SCM_SETCAR (len_str, SCM_MAKINUM (f)); | |
379 | SCM_SETCDR (len_str, str); | |
380 | SCM_SETCDR (answer, len_str); | |
381 | SCM_SETLENGTH (answer, t - f, scm_tc7_substring); | |
382 | } | |
383 | SCM_ALLOW_INTS; | |
384 | return answer; | |
385 | } | |
1bbd0b84 | 386 | #undef FUNC_NAME |
1cc91f1b | 387 | |
0f2d19dd JB |
388 | void |
389 | scm_init_strings () | |
0f2d19dd JB |
390 | { |
391 | #include "strings.x" | |
392 | } | |
393 |