Commit | Line | Data |
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50b1996f | 1 | /* Copyright (C) 1995,1996,1998,2000,2001, 2004, 2006, 2008, 2009 Free Software Foundation, Inc. |
0f2d19dd | 2 | * |
73be1d9e | 3 | * This library is free software; you can redistribute it and/or |
53befeb7 NJ |
4 | * modify it under the terms of the GNU Lesser General Public License |
5 | * as published by the Free Software Foundation; either version 3 of | |
6 | * the License, or (at your option) any later version. | |
0f2d19dd | 7 | * |
53befeb7 NJ |
8 | * This library is distributed in the hope that it will be useful, but |
9 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
73be1d9e MV |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
11 | * Lesser General Public License for more details. | |
0f2d19dd | 12 | * |
73be1d9e MV |
13 | * You should have received a copy of the GNU Lesser General Public |
14 | * License along with this library; if not, write to the Free Software | |
53befeb7 NJ |
15 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
16 | * 02110-1301 USA | |
73be1d9e | 17 | */ |
1bbd0b84 | 18 | |
1bbd0b84 | 19 | |
0f2d19dd | 20 | \f |
dbb605f5 LC |
21 | #ifdef HAVE_CONFIG_H |
22 | # include <config.h> | |
23 | #endif | |
0f2d19dd | 24 | |
faf2c9d7 | 25 | #include <string.h> |
3ee86942 | 26 | #include <stdio.h> |
9c44cd45 MG |
27 | #include <ctype.h> |
28 | #include <unistr.h> | |
eca29b02 | 29 | #include <uniconv.h> |
faf2c9d7 | 30 | |
889975e5 MG |
31 | #include "striconveh.h" |
32 | ||
a0599745 MD |
33 | #include "libguile/_scm.h" |
34 | #include "libguile/chars.h" | |
7c33806a | 35 | #include "libguile/root.h" |
a0599745 | 36 | #include "libguile/strings.h" |
1afff620 | 37 | #include "libguile/deprecation.h" |
a0599745 | 38 | #include "libguile/validate.h" |
c829a427 | 39 | #include "libguile/dynwind.h" |
1afff620 | 40 | |
0f2d19dd JB |
41 | \f |
42 | ||
43 | /* {Strings} | |
44 | */ | |
45 | ||
3ee86942 MV |
46 | |
47 | /* Stringbufs | |
48 | * | |
49 | * XXX - keeping an accurate refcount during GC seems to be quite | |
50 | * tricky, so we just keep score of whether a stringbuf might be | |
50b1996f | 51 | * shared, not whether it definitely is. |
3ee86942 MV |
52 | * |
53 | * The scheme I (mvo) tried to keep an accurate reference count would | |
54 | * recount all strings that point to a stringbuf during the mark-phase | |
55 | * of the GC. This was done since one cannot access the stringbuf of | |
56 | * a string when that string is freed (in order to decrease the | |
57 | * reference count). The memory of the stringbuf might have been | |
58 | * reused already for something completely different. | |
59 | * | |
60 | * This recounted worked for a small number of threads beating on | |
61 | * cow-strings, but it failed randomly with more than 10 threads, say. | |
62 | * I couldn't figure out what went wrong, so I used the conservative | |
63 | * approach implemented below. | |
64 | * | |
65 | * A stringbuf needs to know its length, but only so that it can be | |
66 | * reported when the stringbuf is freed. | |
67 | * | |
50b1996f MG |
68 | * There are 3 storage strategies for stringbufs: inline, outline, and |
69 | * wide. | |
70 | * | |
71 | * Inline strings are small 8-bit strings stored within the double | |
72 | * cell itself. Outline strings are larger 8-bit strings with GC | |
73 | * allocated storage. Wide strings are 32-bit strings with allocated | |
74 | * storage. | |
75 | * | |
76 | * There was little value in making wide string inlineable, since | |
77 | * there is only room for three inlined 32-bit characters. Thus wide | |
78 | * stringbufs are never inlined. | |
3ee86942 MV |
79 | */ |
80 | ||
81 | #define STRINGBUF_F_SHARED 0x100 | |
82 | #define STRINGBUF_F_INLINE 0x200 | |
50b1996f MG |
83 | #define STRINGBUF_F_WIDE 0x400 /* If true, strings have UCS-4 |
84 | encoding. Otherwise, strings | |
85 | are Latin-1. */ | |
3ee86942 MV |
86 | |
87 | #define STRINGBUF_TAG scm_tc7_stringbuf | |
88 | #define STRINGBUF_SHARED(buf) (SCM_CELL_WORD_0(buf) & STRINGBUF_F_SHARED) | |
89 | #define STRINGBUF_INLINE(buf) (SCM_CELL_WORD_0(buf) & STRINGBUF_F_INLINE) | |
9c44cd45 | 90 | #define STRINGBUF_WIDE(buf) (SCM_CELL_WORD_0(buf) & STRINGBUF_F_WIDE) |
3ee86942 | 91 | |
f59cf998 | 92 | #define STRINGBUF_OUTLINE_CHARS(buf) ((unsigned char *) SCM_CELL_WORD_1(buf)) |
3ee86942 | 93 | #define STRINGBUF_OUTLINE_LENGTH(buf) (SCM_CELL_WORD_2(buf)) |
f59cf998 | 94 | #define STRINGBUF_INLINE_CHARS(buf) ((unsigned char *) SCM_CELL_OBJECT_LOC(buf,1)) |
3ee86942 MV |
95 | #define STRINGBUF_INLINE_LENGTH(buf) (((size_t)SCM_CELL_WORD_0(buf))>>16) |
96 | ||
97 | #define STRINGBUF_CHARS(buf) (STRINGBUF_INLINE (buf) \ | |
98 | ? STRINGBUF_INLINE_CHARS (buf) \ | |
99 | : STRINGBUF_OUTLINE_CHARS (buf)) | |
50b1996f | 100 | |
f59cf998 | 101 | #define STRINGBUF_WIDE_CHARS(buf) ((scm_t_wchar *) SCM_CELL_WORD_1(buf)) |
3ee86942 MV |
102 | #define STRINGBUF_LENGTH(buf) (STRINGBUF_INLINE (buf) \ |
103 | ? STRINGBUF_INLINE_LENGTH (buf) \ | |
104 | : STRINGBUF_OUTLINE_LENGTH (buf)) | |
105 | ||
106 | #define STRINGBUF_MAX_INLINE_LEN (3*sizeof(scm_t_bits)) | |
107 | ||
108 | #define SET_STRINGBUF_SHARED(buf) \ | |
109 | (SCM_SET_CELL_WORD_0 ((buf), SCM_CELL_WORD_0 (buf) | STRINGBUF_F_SHARED)) | |
110 | ||
6ce6923b | 111 | #if SCM_STRING_LENGTH_HISTOGRAM |
3ee86942 MV |
112 | static size_t lenhist[1001]; |
113 | #endif | |
114 | ||
50b1996f MG |
115 | /* Make a stringbuf with space for LEN 8-bit Latin-1-encoded |
116 | characters. */ | |
3ee86942 MV |
117 | static SCM |
118 | make_stringbuf (size_t len) | |
0f2d19dd | 119 | { |
3ee86942 MV |
120 | /* XXX - for the benefit of SCM_STRING_CHARS, SCM_SYMBOL_CHARS and |
121 | scm_i_symbol_chars, all stringbufs are null-terminated. Once | |
122 | SCM_STRING_CHARS and SCM_SYMBOL_CHARS are removed and the code | |
123 | has been changed for scm_i_symbol_chars, this null-termination | |
124 | can be dropped. | |
125 | */ | |
126 | ||
6ce6923b | 127 | #if SCM_STRING_LENGTH_HISTOGRAM |
3ee86942 MV |
128 | if (len < 1000) |
129 | lenhist[len]++; | |
130 | else | |
131 | lenhist[1000]++; | |
132 | #endif | |
0f2d19dd | 133 | |
3ee86942 MV |
134 | if (len <= STRINGBUF_MAX_INLINE_LEN-1) |
135 | { | |
136 | return scm_double_cell (STRINGBUF_TAG | STRINGBUF_F_INLINE | (len << 16), | |
137 | 0, 0, 0); | |
138 | } | |
139 | else | |
140 | { | |
141 | char *mem = scm_gc_malloc (len+1, "string"); | |
142 | mem[len] = '\0'; | |
143 | return scm_double_cell (STRINGBUF_TAG, (scm_t_bits) mem, | |
144 | (scm_t_bits) len, (scm_t_bits) 0); | |
145 | } | |
146 | } | |
e53cc817 | 147 | |
50b1996f MG |
148 | /* Make a stringbuf with space for LEN 32-bit UCS-4-encoded |
149 | characters. */ | |
9c44cd45 MG |
150 | static SCM |
151 | make_wide_stringbuf (size_t len) | |
152 | { | |
153 | scm_t_wchar *mem; | |
6ce6923b | 154 | #if SCM_STRING_LENGTH_HISTOGRAM |
9c44cd45 MG |
155 | if (len < 1000) |
156 | lenhist[len]++; | |
157 | else | |
158 | lenhist[1000]++; | |
159 | #endif | |
160 | ||
161 | mem = scm_gc_malloc (sizeof (scm_t_wchar) * (len + 1), "string"); | |
162 | mem[len] = 0; | |
163 | return scm_double_cell (STRINGBUF_TAG | STRINGBUF_F_WIDE, (scm_t_bits) mem, | |
164 | (scm_t_bits) len, (scm_t_bits) 0); | |
165 | } | |
166 | ||
2b829bbb KR |
167 | /* Return a new stringbuf whose underlying storage consists of the LEN+1 |
168 | octets pointed to by STR (the last octet is zero). */ | |
7f74cf9a | 169 | SCM |
fd0a5bbc HWN |
170 | scm_i_take_stringbufn (char *str, size_t len) |
171 | { | |
2b829bbb | 172 | scm_gc_register_collectable_memory (str, len + 1, "stringbuf"); |
fd0a5bbc HWN |
173 | |
174 | return scm_double_cell (STRINGBUF_TAG, (scm_t_bits) str, | |
175 | (scm_t_bits) len, (scm_t_bits) 0); | |
176 | } | |
177 | ||
3ee86942 MV |
178 | SCM |
179 | scm_i_stringbuf_mark (SCM buf) | |
180 | { | |
181 | return SCM_BOOL_F; | |
182 | } | |
1bbd0b84 | 183 | |
3ee86942 MV |
184 | void |
185 | scm_i_stringbuf_free (SCM buf) | |
0f2d19dd | 186 | { |
3ee86942 | 187 | if (!STRINGBUF_INLINE (buf)) |
9c44cd45 MG |
188 | { |
189 | if (!STRINGBUF_WIDE (buf)) | |
190 | scm_gc_free (STRINGBUF_OUTLINE_CHARS (buf), | |
191 | STRINGBUF_OUTLINE_LENGTH (buf) + 1, "string"); | |
192 | else | |
193 | scm_gc_free (STRINGBUF_OUTLINE_CHARS (buf), | |
194 | sizeof (scm_t_wchar) * (STRINGBUF_OUTLINE_LENGTH (buf) | |
195 | + 1), "string"); | |
196 | } | |
197 | ||
198 | } | |
199 | ||
50b1996f MG |
200 | /* Convert a stringbuf containing 8-bit Latin-1-encoded characters to |
201 | one containing 32-bit UCS-4-encoded characters. */ | |
9c44cd45 MG |
202 | static void |
203 | widen_stringbuf (SCM buf) | |
204 | { | |
205 | size_t i, len; | |
206 | scm_t_wchar *mem; | |
207 | ||
208 | if (STRINGBUF_WIDE (buf)) | |
209 | return; | |
210 | ||
211 | if (STRINGBUF_INLINE (buf)) | |
212 | { | |
213 | len = STRINGBUF_INLINE_LENGTH (buf); | |
214 | ||
215 | mem = scm_gc_malloc (sizeof (scm_t_wchar) * (len + 1), "string"); | |
216 | for (i = 0; i < len; i++) | |
217 | mem[i] = | |
f59cf998 | 218 | (scm_t_wchar) STRINGBUF_INLINE_CHARS (buf)[i]; |
9c44cd45 MG |
219 | mem[len] = 0; |
220 | ||
221 | SCM_SET_CELL_WORD_0 (buf, SCM_CELL_WORD_0 (buf) ^ STRINGBUF_F_INLINE); | |
222 | SCM_SET_CELL_WORD_0 (buf, SCM_CELL_WORD_0 (buf) | STRINGBUF_F_WIDE); | |
223 | SCM_SET_CELL_WORD_1 (buf, mem); | |
224 | SCM_SET_CELL_WORD_2 (buf, len); | |
225 | } | |
226 | else | |
227 | { | |
228 | len = STRINGBUF_OUTLINE_LENGTH (buf); | |
229 | ||
230 | mem = scm_gc_malloc (sizeof (scm_t_wchar) * (len + 1), "string"); | |
231 | for (i = 0; i < len; i++) | |
232 | mem[i] = | |
f59cf998 | 233 | (scm_t_wchar) STRINGBUF_OUTLINE_CHARS (buf)[i]; |
9c44cd45 MG |
234 | mem[len] = 0; |
235 | ||
236 | scm_gc_free (STRINGBUF_OUTLINE_CHARS (buf), len + 1, "string"); | |
237 | ||
238 | SCM_SET_CELL_WORD_0 (buf, SCM_CELL_WORD_0 (buf) | STRINGBUF_F_WIDE); | |
239 | SCM_SET_CELL_WORD_1 (buf, mem); | |
240 | SCM_SET_CELL_WORD_2 (buf, len); | |
241 | } | |
3ee86942 | 242 | } |
bd9e24b3 | 243 | |
587a3355 MG |
244 | /* Convert a stringbuf of 32-bit UCS-4-encoded characters to one |
245 | containing 8-bit Latin-1-encoded characters, if possible. */ | |
246 | static void | |
247 | narrow_stringbuf (SCM buf) | |
248 | { | |
249 | size_t i, len; | |
250 | scm_t_wchar *wmem; | |
251 | char *mem; | |
252 | ||
253 | if (!STRINGBUF_WIDE (buf)) | |
254 | return; | |
255 | ||
256 | len = STRINGBUF_OUTLINE_LENGTH (buf); | |
257 | i = 0; | |
258 | wmem = STRINGBUF_WIDE_CHARS (buf); | |
259 | while (i < len) | |
260 | if (wmem[i++] > 0xFF) | |
261 | return; | |
262 | ||
263 | mem = scm_gc_malloc (sizeof (char) * (len + 1), "string"); | |
264 | for (i = 0; i < len; i++) | |
265 | mem[i] = (unsigned char) wmem[i]; | |
266 | ||
267 | scm_gc_free (wmem, sizeof (scm_t_wchar) * (len + 1), "string"); | |
268 | ||
269 | SCM_SET_CELL_WORD_0 (buf, SCM_CELL_WORD_0 (buf) ^ STRINGBUF_F_WIDE); | |
270 | SCM_SET_CELL_WORD_1 (buf, mem); | |
271 | SCM_SET_CELL_WORD_2 (buf, len); | |
272 | } | |
273 | ||
9de87eea | 274 | scm_i_pthread_mutex_t stringbuf_write_mutex = SCM_I_PTHREAD_MUTEX_INITIALIZER; |
bd9e24b3 | 275 | |
3ee86942 MV |
276 | /* Copy-on-write strings. |
277 | */ | |
bd9e24b3 | 278 | |
3ee86942 | 279 | #define STRING_TAG scm_tc7_string |
bd9e24b3 | 280 | |
3ee86942 MV |
281 | #define STRING_STRINGBUF(str) (SCM_CELL_OBJECT_1(str)) |
282 | #define STRING_START(str) ((size_t)SCM_CELL_WORD_2(str)) | |
283 | #define STRING_LENGTH(str) ((size_t)SCM_CELL_WORD_3(str)) | |
bd9e24b3 | 284 | |
3ee86942 MV |
285 | #define SET_STRING_STRINGBUF(str,buf) (SCM_SET_CELL_OBJECT_1(str,buf)) |
286 | #define SET_STRING_START(str,start) (SCM_SET_CELL_WORD_2(str,start)) | |
287 | ||
288 | #define IS_STRING(str) (SCM_NIMP(str) && SCM_TYP7(str) == STRING_TAG) | |
289 | ||
ed35de72 MV |
290 | /* Read-only strings. |
291 | */ | |
292 | ||
293 | #define RO_STRING_TAG (scm_tc7_string + 0x200) | |
294 | #define IS_RO_STRING(str) (SCM_CELL_TYPE(str)==RO_STRING_TAG) | |
295 | ||
e1b29f6a MV |
296 | /* Mutation-sharing substrings |
297 | */ | |
298 | ||
299 | #define SH_STRING_TAG (scm_tc7_string + 0x100) | |
300 | ||
301 | #define SH_STRING_STRING(sh) (SCM_CELL_OBJECT_1(sh)) | |
302 | /* START and LENGTH as for STRINGs. */ | |
303 | ||
304 | #define IS_SH_STRING(str) (SCM_CELL_TYPE(str)==SH_STRING_TAG) | |
305 | ||
50b1996f MG |
306 | /* Create a scheme string with space for LEN 8-bit Latin-1-encoded |
307 | characters. CHARSP, if not NULL, will be set to location of the | |
308 | char array. */ | |
3ee86942 MV |
309 | SCM |
310 | scm_i_make_string (size_t len, char **charsp) | |
311 | { | |
312 | SCM buf = make_stringbuf (len); | |
313 | SCM res; | |
314 | if (charsp) | |
f59cf998 | 315 | *charsp = (char *) STRINGBUF_CHARS (buf); |
3ee86942 MV |
316 | res = scm_double_cell (STRING_TAG, SCM_UNPACK(buf), |
317 | (scm_t_bits)0, (scm_t_bits) len); | |
318 | return res; | |
0f2d19dd JB |
319 | } |
320 | ||
50b1996f MG |
321 | /* Create a scheme string with space for LEN 32-bit UCS-4-encoded |
322 | characters. CHARSP, if not NULL, will be set to location of the | |
323 | character array. */ | |
9c44cd45 | 324 | SCM |
50b1996f | 325 | scm_i_make_wide_string (size_t len, scm_t_wchar **charsp) |
9c44cd45 MG |
326 | { |
327 | SCM buf = make_wide_stringbuf (len); | |
328 | SCM res; | |
329 | if (charsp) | |
330 | *charsp = STRINGBUF_WIDE_CHARS (buf); | |
331 | res = scm_double_cell (STRING_TAG, SCM_UNPACK (buf), | |
332 | (scm_t_bits) 0, (scm_t_bits) len); | |
333 | return res; | |
334 | } | |
335 | ||
3ee86942 MV |
336 | static void |
337 | validate_substring_args (SCM str, size_t start, size_t end) | |
338 | { | |
339 | if (!IS_STRING (str)) | |
340 | scm_wrong_type_arg_msg (NULL, 0, str, "string"); | |
341 | if (start > STRING_LENGTH (str)) | |
342 | scm_out_of_range (NULL, scm_from_size_t (start)); | |
343 | if (end > STRING_LENGTH (str) || end < start) | |
344 | scm_out_of_range (NULL, scm_from_size_t (end)); | |
345 | } | |
0f2d19dd | 346 | |
e1b29f6a MV |
347 | static inline void |
348 | get_str_buf_start (SCM *str, SCM *buf, size_t *start) | |
349 | { | |
350 | *start = STRING_START (*str); | |
351 | if (IS_SH_STRING (*str)) | |
352 | { | |
353 | *str = SH_STRING_STRING (*str); | |
354 | *start += STRING_START (*str); | |
355 | } | |
356 | *buf = STRING_STRINGBUF (*str); | |
357 | } | |
358 | ||
3ee86942 MV |
359 | SCM |
360 | scm_i_substring (SCM str, size_t start, size_t end) | |
0f2d19dd | 361 | { |
e1b29f6a MV |
362 | SCM buf; |
363 | size_t str_start; | |
364 | get_str_buf_start (&str, &buf, &str_start); | |
9de87eea | 365 | scm_i_pthread_mutex_lock (&stringbuf_write_mutex); |
3ee86942 | 366 | SET_STRINGBUF_SHARED (buf); |
9de87eea | 367 | scm_i_pthread_mutex_unlock (&stringbuf_write_mutex); |
3ee86942 | 368 | return scm_double_cell (STRING_TAG, SCM_UNPACK(buf), |
e1b29f6a MV |
369 | (scm_t_bits)str_start + start, |
370 | (scm_t_bits) end - start); | |
0f2d19dd JB |
371 | } |
372 | ||
ed35de72 MV |
373 | SCM |
374 | scm_i_substring_read_only (SCM str, size_t start, size_t end) | |
375 | { | |
45a9f430 LC |
376 | SCM buf; |
377 | size_t str_start; | |
378 | get_str_buf_start (&str, &buf, &str_start); | |
379 | scm_i_pthread_mutex_lock (&stringbuf_write_mutex); | |
380 | SET_STRINGBUF_SHARED (buf); | |
381 | scm_i_pthread_mutex_unlock (&stringbuf_write_mutex); | |
382 | return scm_double_cell (RO_STRING_TAG, SCM_UNPACK(buf), | |
383 | (scm_t_bits)str_start + start, | |
384 | (scm_t_bits) end - start); | |
ed35de72 MV |
385 | } |
386 | ||
3ee86942 MV |
387 | SCM |
388 | scm_i_substring_copy (SCM str, size_t start, size_t end) | |
389 | { | |
390 | size_t len = end - start; | |
edea856c | 391 | SCM buf, my_buf; |
e1b29f6a MV |
392 | size_t str_start; |
393 | get_str_buf_start (&str, &buf, &str_start); | |
9c44cd45 MG |
394 | if (scm_i_is_narrow_string (str)) |
395 | { | |
396 | my_buf = make_stringbuf (len); | |
397 | memcpy (STRINGBUF_CHARS (my_buf), | |
398 | STRINGBUF_CHARS (buf) + str_start + start, len); | |
399 | } | |
400 | else | |
401 | { | |
402 | my_buf = make_wide_stringbuf (len); | |
403 | u32_cpy ((scm_t_uint32 *) STRINGBUF_WIDE_CHARS (my_buf), | |
404 | (scm_t_uint32 *) (STRINGBUF_WIDE_CHARS (buf) + str_start | |
405 | + start), len); | |
406 | /* Even though this string is wide, the substring may be narrow. | |
50b1996f | 407 | Consider adding code to narrow the string. */ |
9c44cd45 | 408 | } |
3ee86942 | 409 | scm_remember_upto_here_1 (buf); |
9c44cd45 MG |
410 | return scm_double_cell (STRING_TAG, SCM_UNPACK (my_buf), |
411 | (scm_t_bits) 0, (scm_t_bits) len); | |
3ee86942 | 412 | } |
0f2d19dd | 413 | |
e1b29f6a MV |
414 | SCM |
415 | scm_i_substring_shared (SCM str, size_t start, size_t end) | |
416 | { | |
417 | if (start == 0 && end == STRING_LENGTH (str)) | |
418 | return str; | |
419 | else | |
420 | { | |
421 | size_t len = end - start; | |
422 | if (IS_SH_STRING (str)) | |
423 | { | |
424 | start += STRING_START (str); | |
425 | str = SH_STRING_STRING (str); | |
426 | } | |
427 | return scm_double_cell (SH_STRING_TAG, SCM_UNPACK(str), | |
428 | (scm_t_bits)start, (scm_t_bits) len); | |
429 | } | |
430 | } | |
431 | ||
3ee86942 MV |
432 | SCM |
433 | scm_c_substring (SCM str, size_t start, size_t end) | |
434 | { | |
435 | validate_substring_args (str, start, end); | |
436 | return scm_i_substring (str, start, end); | |
437 | } | |
ee149d03 | 438 | |
ed35de72 MV |
439 | SCM |
440 | scm_c_substring_read_only (SCM str, size_t start, size_t end) | |
441 | { | |
442 | validate_substring_args (str, start, end); | |
443 | return scm_i_substring_read_only (str, start, end); | |
444 | } | |
445 | ||
0f2d19dd | 446 | SCM |
3ee86942 | 447 | scm_c_substring_copy (SCM str, size_t start, size_t end) |
0f2d19dd | 448 | { |
3ee86942 MV |
449 | validate_substring_args (str, start, end); |
450 | return scm_i_substring_copy (str, start, end); | |
451 | } | |
452 | ||
3ee86942 MV |
453 | SCM |
454 | scm_c_substring_shared (SCM str, size_t start, size_t end) | |
455 | { | |
456 | validate_substring_args (str, start, end); | |
457 | return scm_i_substring_shared (str, start, end); | |
458 | } | |
0f2d19dd | 459 | |
ee149d03 | 460 | SCM |
3ee86942 | 461 | scm_i_string_mark (SCM str) |
ee149d03 | 462 | { |
3ee86942 MV |
463 | if (IS_SH_STRING (str)) |
464 | return SH_STRING_STRING (str); | |
465 | else | |
466 | return STRING_STRINGBUF (str); | |
ee149d03 JB |
467 | } |
468 | ||
3ee86942 MV |
469 | void |
470 | scm_i_string_free (SCM str) | |
471 | { | |
472 | } | |
36284627 | 473 | |
3ee86942 MV |
474 | /* Internal accessors |
475 | */ | |
476 | ||
50b1996f MG |
477 | /* Returns the number of characters in STR. This may be different |
478 | than the memory size of the string storage. */ | |
3ee86942 MV |
479 | size_t |
480 | scm_i_string_length (SCM str) | |
0f2d19dd | 481 | { |
3ee86942 | 482 | return STRING_LENGTH (str); |
0f2d19dd JB |
483 | } |
484 | ||
50b1996f MG |
485 | /* True if the string is 'narrow', meaning it has a 8-bit Latin-1 |
486 | encoding. False if it is 'wide', having a 32-bit UCS-4 | |
487 | encoding. */ | |
9c44cd45 MG |
488 | int |
489 | scm_i_is_narrow_string (SCM str) | |
490 | { | |
491 | return !STRINGBUF_WIDE (STRING_STRINGBUF (str)); | |
492 | } | |
493 | ||
587a3355 MG |
494 | /* Try to coerce a string to be narrow. It if is narrow already, do |
495 | nothing. If it is wide, shrink it to narrow if none of its | |
496 | characters are above 0xFF. Return true if the string is narrow or | |
497 | was made to be narrow. */ | |
498 | int | |
499 | scm_i_try_narrow_string (SCM str) | |
500 | { | |
501 | narrow_stringbuf (STRING_STRINGBUF (str)); | |
502 | ||
503 | return scm_i_is_narrow_string (str); | |
504 | } | |
505 | ||
50b1996f MG |
506 | /* Returns a pointer to the 8-bit Latin-1 encoded character array of |
507 | STR. */ | |
3ee86942 MV |
508 | const char * |
509 | scm_i_string_chars (SCM str) | |
510 | { | |
511 | SCM buf; | |
e1b29f6a MV |
512 | size_t start; |
513 | get_str_buf_start (&str, &buf, &start); | |
9c44cd45 | 514 | if (scm_i_is_narrow_string (str)) |
f59cf998 | 515 | return (const char *) STRINGBUF_CHARS (buf) + start; |
9c44cd45 MG |
516 | else |
517 | scm_misc_error (NULL, "Invalid read access of chars of wide string: ~s", | |
518 | scm_list_1 (str)); | |
519 | return NULL; | |
3ee86942 | 520 | } |
b00418df | 521 | |
50b1996f MG |
522 | /* Returns a pointer to the 32-bit UCS-4 encoded character array of |
523 | STR. */ | |
9c44cd45 MG |
524 | const scm_t_wchar * |
525 | scm_i_string_wide_chars (SCM str) | |
526 | { | |
527 | SCM buf; | |
528 | size_t start; | |
529 | ||
530 | get_str_buf_start (&str, &buf, &start); | |
531 | if (!scm_i_is_narrow_string (str)) | |
f59cf998 | 532 | return (const scm_t_wchar *) STRINGBUF_WIDE_CHARS (buf) + start; |
9c44cd45 MG |
533 | else |
534 | scm_misc_error (NULL, "Invalid read access of chars of narrow string: ~s", | |
535 | scm_list_1 (str)); | |
536 | } | |
537 | ||
538 | /* If the buffer in ORIG_STR is shared, copy ORIG_STR's characters to | |
539 | a new string buffer, so that it can be modified without modifying | |
50b1996f MG |
540 | other strings. Also, lock the string mutex. Later, one must call |
541 | scm_i_string_stop_writing to unlock the mutex. */ | |
9c44cd45 MG |
542 | SCM |
543 | scm_i_string_start_writing (SCM orig_str) | |
b00418df | 544 | { |
ed35de72 | 545 | SCM buf, str = orig_str; |
e1b29f6a | 546 | size_t start; |
ed35de72 | 547 | |
e1b29f6a | 548 | get_str_buf_start (&str, &buf, &start); |
ed35de72 MV |
549 | if (IS_RO_STRING (str)) |
550 | scm_misc_error (NULL, "string is read-only: ~s", scm_list_1 (orig_str)); | |
551 | ||
9de87eea | 552 | scm_i_pthread_mutex_lock (&stringbuf_write_mutex); |
3ee86942 MV |
553 | if (STRINGBUF_SHARED (buf)) |
554 | { | |
9c44cd45 | 555 | /* Clone the stringbuf. */ |
3ee86942 MV |
556 | size_t len = STRING_LENGTH (str); |
557 | SCM new_buf; | |
558 | ||
9de87eea | 559 | scm_i_pthread_mutex_unlock (&stringbuf_write_mutex); |
3ee86942 | 560 | |
9c44cd45 MG |
561 | if (scm_i_is_narrow_string (str)) |
562 | { | |
563 | new_buf = make_stringbuf (len); | |
564 | memcpy (STRINGBUF_CHARS (new_buf), | |
565 | STRINGBUF_CHARS (buf) + STRING_START (str), len); | |
566 | ||
567 | } | |
568 | else | |
569 | { | |
570 | new_buf = make_wide_stringbuf (len); | |
571 | u32_cpy ((scm_t_uint32 *) STRINGBUF_WIDE_CHARS (new_buf), | |
572 | (scm_t_uint32 *) (STRINGBUF_WIDE_CHARS (buf) | |
573 | + STRING_START (str)), len); | |
574 | } | |
3ee86942 MV |
575 | scm_i_thread_put_to_sleep (); |
576 | SET_STRING_STRINGBUF (str, new_buf); | |
577 | start -= STRING_START (str); | |
578 | SET_STRING_START (str, 0); | |
579 | scm_i_thread_wake_up (); | |
580 | ||
581 | buf = new_buf; | |
582 | ||
9de87eea | 583 | scm_i_pthread_mutex_lock (&stringbuf_write_mutex); |
3ee86942 | 584 | } |
9c44cd45 MG |
585 | return orig_str; |
586 | } | |
587 | ||
50b1996f | 588 | /* Return a pointer to the 8-bit Latin-1 chars of a string. */ |
9c44cd45 MG |
589 | char * |
590 | scm_i_string_writable_chars (SCM str) | |
591 | { | |
592 | SCM buf; | |
593 | size_t start; | |
3ee86942 | 594 | |
9c44cd45 MG |
595 | get_str_buf_start (&str, &buf, &start); |
596 | if (scm_i_is_narrow_string (str)) | |
f59cf998 | 597 | return (char *) STRINGBUF_CHARS (buf) + start; |
9c44cd45 MG |
598 | else |
599 | scm_misc_error (NULL, "Invalid write access of chars of wide string: ~s", | |
600 | scm_list_1 (str)); | |
601 | return NULL; | |
602 | } | |
603 | ||
50b1996f | 604 | /* Return a pointer to the UCS-4 codepoints of a string. */ |
9c44cd45 MG |
605 | static scm_t_wchar * |
606 | scm_i_string_writable_wide_chars (SCM str) | |
607 | { | |
608 | SCM buf; | |
609 | size_t start; | |
610 | ||
611 | get_str_buf_start (&str, &buf, &start); | |
612 | if (!scm_i_is_narrow_string (str)) | |
613 | return STRINGBUF_WIDE_CHARS (buf) + start; | |
614 | else | |
1c7b216f | 615 | scm_misc_error (NULL, "Invalid write access of chars of narrow string: ~s", |
9c44cd45 | 616 | scm_list_1 (str)); |
b00418df DH |
617 | } |
618 | ||
50b1996f MG |
619 | /* Unlock the string mutex that was locked when |
620 | scm_i_string_start_writing was called. */ | |
3ee86942 MV |
621 | void |
622 | scm_i_string_stop_writing (void) | |
623 | { | |
9de87eea | 624 | scm_i_pthread_mutex_unlock (&stringbuf_write_mutex); |
3ee86942 | 625 | } |
b00418df | 626 | |
50b1996f | 627 | /* Return the Xth character of STR as a UCS-4 codepoint. */ |
9c44cd45 MG |
628 | scm_t_wchar |
629 | scm_i_string_ref (SCM str, size_t x) | |
630 | { | |
631 | if (scm_i_is_narrow_string (str)) | |
632 | return (scm_t_wchar) (unsigned char) (scm_i_string_chars (str)[x]); | |
633 | else | |
634 | return scm_i_string_wide_chars (str)[x]; | |
635 | } | |
636 | ||
889975e5 MG |
637 | /* Returns index+1 of the first char in STR that matches C, or |
638 | 0 if the char is not found. */ | |
639 | int | |
640 | scm_i_string_contains_char (SCM str, char ch) | |
641 | { | |
642 | size_t i; | |
643 | size_t len = scm_i_string_length (str); | |
644 | ||
645 | i = 0; | |
646 | if (scm_i_is_narrow_string (str)) | |
647 | { | |
648 | while (i < len) | |
649 | { | |
650 | if (scm_i_string_chars (str)[i] == ch) | |
651 | return i+1; | |
652 | i++; | |
653 | } | |
654 | } | |
655 | else | |
656 | { | |
657 | while (i < len) | |
658 | { | |
659 | if (scm_i_string_wide_chars (str)[i] | |
660 | == (unsigned char) ch) | |
661 | return i+1; | |
662 | i++; | |
663 | } | |
664 | } | |
665 | return 0; | |
666 | } | |
667 | ||
3f47e526 MG |
668 | int |
669 | scm_i_string_strcmp (SCM sstr, size_t start_x, const char *cstr) | |
670 | { | |
671 | if (scm_i_is_narrow_string (sstr)) | |
672 | { | |
673 | const char *a = scm_i_string_chars (sstr) + start_x; | |
674 | const char *b = cstr; | |
675 | return strncmp (a, b, strlen(b)); | |
676 | } | |
677 | else | |
678 | { | |
679 | size_t i; | |
680 | const scm_t_wchar *a = scm_i_string_wide_chars (sstr) + start_x; | |
681 | const char *b = cstr; | |
682 | for (i = 0; i < strlen (b); i++) | |
683 | { | |
684 | if (a[i] != (unsigned char) b[i]) | |
685 | return 1; | |
686 | } | |
687 | } | |
688 | return 0; | |
689 | } | |
690 | ||
50b1996f | 691 | /* Set the Pth character of STR to UCS-4 codepoint CHR. */ |
9c44cd45 MG |
692 | void |
693 | scm_i_string_set_x (SCM str, size_t p, scm_t_wchar chr) | |
694 | { | |
695 | if (chr > 0xFF && scm_i_is_narrow_string (str)) | |
696 | widen_stringbuf (STRING_STRINGBUF (str)); | |
697 | ||
698 | if (scm_i_is_narrow_string (str)) | |
699 | { | |
700 | char *dst = scm_i_string_writable_chars (str); | |
587a3355 | 701 | dst[p] = chr; |
9c44cd45 MG |
702 | } |
703 | else | |
704 | { | |
705 | scm_t_wchar *dst = scm_i_string_writable_wide_chars (str); | |
706 | dst[p] = chr; | |
707 | } | |
708 | } | |
709 | ||
3ee86942 | 710 | /* Symbols. |
587a3355 | 711 | |
3ee86942 MV |
712 | Basic symbol creation and accessing is done here, the rest is in |
713 | symbols.[hc]. This has been done to keep stringbufs and the | |
714 | internals of strings and string-like objects confined to this file. | |
715 | */ | |
716 | ||
717 | #define SYMBOL_STRINGBUF SCM_CELL_OBJECT_1 | |
718 | ||
719 | SCM | |
6869328b MV |
720 | scm_i_make_symbol (SCM name, scm_t_bits flags, |
721 | unsigned long hash, SCM props) | |
3ee86942 MV |
722 | { |
723 | SCM buf; | |
724 | size_t start = STRING_START (name); | |
725 | size_t length = STRING_LENGTH (name); | |
726 | ||
727 | if (IS_SH_STRING (name)) | |
728 | { | |
729 | name = SH_STRING_STRING (name); | |
730 | start += STRING_START (name); | |
731 | } | |
732 | buf = SYMBOL_STRINGBUF (name); | |
733 | ||
734 | if (start == 0 && length == STRINGBUF_LENGTH (buf)) | |
735 | { | |
736 | /* reuse buf. */ | |
9de87eea | 737 | scm_i_pthread_mutex_lock (&stringbuf_write_mutex); |
3ee86942 | 738 | SET_STRINGBUF_SHARED (buf); |
9de87eea | 739 | scm_i_pthread_mutex_unlock (&stringbuf_write_mutex); |
3ee86942 MV |
740 | } |
741 | else | |
742 | { | |
743 | /* make new buf. */ | |
9c44cd45 MG |
744 | if (scm_i_is_narrow_string (name)) |
745 | { | |
746 | SCM new_buf = make_stringbuf (length); | |
747 | memcpy (STRINGBUF_CHARS (new_buf), | |
748 | STRINGBUF_CHARS (buf) + start, length); | |
749 | buf = new_buf; | |
750 | } | |
751 | else | |
752 | { | |
753 | SCM new_buf = make_wide_stringbuf (length); | |
754 | u32_cpy ((scm_t_uint32 *) STRINGBUF_WIDE_CHARS (new_buf), | |
755 | (scm_t_uint32 *) STRINGBUF_WIDE_CHARS (buf) + start, | |
756 | length); | |
757 | buf = new_buf; | |
758 | } | |
3ee86942 | 759 | } |
6869328b | 760 | return scm_double_cell (scm_tc7_symbol | flags, SCM_UNPACK (buf), |
3ee86942 MV |
761 | (scm_t_bits) hash, SCM_UNPACK (props)); |
762 | } | |
763 | ||
fd0a5bbc HWN |
764 | SCM |
765 | scm_i_c_make_symbol (const char *name, size_t len, | |
766 | scm_t_bits flags, unsigned long hash, SCM props) | |
767 | { | |
768 | SCM buf = make_stringbuf (len); | |
769 | memcpy (STRINGBUF_CHARS (buf), name, len); | |
770 | ||
771 | return scm_double_cell (scm_tc7_symbol | flags, SCM_UNPACK (buf), | |
772 | (scm_t_bits) hash, SCM_UNPACK (props)); | |
773 | } | |
774 | ||
775 | /* Return a new symbol that uses the LEN bytes pointed to by NAME as its | |
776 | underlying storage. */ | |
777 | SCM | |
778 | scm_i_c_take_symbol (char *name, size_t len, | |
779 | scm_t_bits flags, unsigned long hash, SCM props) | |
780 | { | |
781 | SCM buf = scm_i_take_stringbufn (name, len); | |
782 | ||
783 | return scm_double_cell (scm_tc7_symbol | flags, SCM_UNPACK (buf), | |
784 | (scm_t_bits) hash, SCM_UNPACK (props)); | |
785 | } | |
786 | ||
50b1996f MG |
787 | /* Returns the number of characters in SYM. This may be different |
788 | from the memory size of SYM. */ | |
3ee86942 MV |
789 | size_t |
790 | scm_i_symbol_length (SCM sym) | |
0f2d19dd | 791 | { |
3ee86942 | 792 | return STRINGBUF_LENGTH (SYMBOL_STRINGBUF (sym)); |
0f2d19dd JB |
793 | } |
794 | ||
071bb6a8 LC |
795 | size_t |
796 | scm_c_symbol_length (SCM sym) | |
797 | #define FUNC_NAME "scm_c_symbol_length" | |
798 | { | |
799 | SCM_VALIDATE_SYMBOL (1, sym); | |
800 | ||
801 | return STRINGBUF_LENGTH (SYMBOL_STRINGBUF (sym)); | |
802 | } | |
803 | #undef FUNC_NAME | |
804 | ||
50b1996f MG |
805 | /* True if the name of SYM is stored as a Latin-1 encoded string. |
806 | False if it is stored as a 32-bit UCS-4-encoded string. */ | |
9c44cd45 MG |
807 | int |
808 | scm_i_is_narrow_symbol (SCM sym) | |
809 | { | |
810 | SCM buf; | |
811 | ||
812 | buf = SYMBOL_STRINGBUF (sym); | |
813 | return !STRINGBUF_WIDE (buf); | |
814 | } | |
815 | ||
50b1996f MG |
816 | /* Returns a pointer to the 8-bit Latin-1 encoded character array that |
817 | contains the name of SYM. */ | |
3ee86942 MV |
818 | const char * |
819 | scm_i_symbol_chars (SCM sym) | |
820 | { | |
9c44cd45 MG |
821 | SCM buf; |
822 | ||
823 | buf = SYMBOL_STRINGBUF (sym); | |
824 | if (!STRINGBUF_WIDE (buf)) | |
f59cf998 | 825 | return (const char *) STRINGBUF_CHARS (buf); |
9c44cd45 MG |
826 | else |
827 | scm_misc_error (NULL, "Invalid access of chars of a wide symbol ~S", | |
828 | scm_list_1 (sym)); | |
829 | } | |
830 | ||
50b1996f MG |
831 | /* Return a pointer to the 32-bit UCS-4-encoded character array of a |
832 | symbol's name. */ | |
9c44cd45 MG |
833 | const scm_t_wchar * |
834 | scm_i_symbol_wide_chars (SCM sym) | |
835 | { | |
836 | SCM buf; | |
837 | ||
838 | buf = SYMBOL_STRINGBUF (sym); | |
839 | if (STRINGBUF_WIDE (buf)) | |
f59cf998 | 840 | return (const scm_t_wchar *) STRINGBUF_WIDE_CHARS (buf); |
9c44cd45 MG |
841 | else |
842 | scm_misc_error (NULL, "Invalid access of chars of a narrow symbol ~S", | |
843 | scm_list_1 (sym)); | |
3ee86942 | 844 | } |
1cc91f1b | 845 | |
3ee86942 MV |
846 | SCM |
847 | scm_i_symbol_mark (SCM sym) | |
0f2d19dd | 848 | { |
3ee86942 MV |
849 | scm_gc_mark (SYMBOL_STRINGBUF (sym)); |
850 | return SCM_CELL_OBJECT_3 (sym); | |
0f2d19dd JB |
851 | } |
852 | ||
3ee86942 MV |
853 | void |
854 | scm_i_symbol_free (SCM sym) | |
855 | { | |
856 | } | |
0f2d19dd | 857 | |
be54b15d | 858 | SCM |
3ee86942 | 859 | scm_i_symbol_substring (SCM sym, size_t start, size_t end) |
be54b15d | 860 | { |
3ee86942 | 861 | SCM buf = SYMBOL_STRINGBUF (sym); |
9de87eea | 862 | scm_i_pthread_mutex_lock (&stringbuf_write_mutex); |
3ee86942 | 863 | SET_STRINGBUF_SHARED (buf); |
9de87eea | 864 | scm_i_pthread_mutex_unlock (&stringbuf_write_mutex); |
fd2b17b9 | 865 | return scm_double_cell (RO_STRING_TAG, SCM_UNPACK (buf), |
3ee86942 MV |
866 | (scm_t_bits)start, (scm_t_bits) end - start); |
867 | } | |
be54b15d | 868 | |
50b1996f | 869 | /* Returns the Xth character of symbol SYM as a UCS-4 codepoint. */ |
9c44cd45 MG |
870 | scm_t_wchar |
871 | scm_i_symbol_ref (SCM sym, size_t x) | |
872 | { | |
873 | if (scm_i_is_narrow_symbol (sym)) | |
874 | return (scm_t_wchar) (unsigned char) (scm_i_symbol_chars (sym)[x]); | |
875 | else | |
876 | return scm_i_symbol_wide_chars (sym)[x]; | |
877 | } | |
878 | ||
3ee86942 MV |
879 | /* Debugging |
880 | */ | |
be54b15d | 881 | |
6ce6923b MG |
882 | SCM_DEFINE (scm_sys_string_dump, "%string-dump", 1, 0, 0, (SCM str), |
883 | "Returns an association list containing debugging information\n" | |
884 | "for @var{str}. The association list has the following entries." | |
885 | "@table @code\n" | |
886 | "@item string\n" | |
887 | "The string itself.\n" | |
888 | "@item start\n" | |
889 | "The start index of the string into its stringbuf\n" | |
890 | "@item length\n" | |
891 | "The length of the string\n" | |
892 | "@item shared\n" | |
893 | "If this string is a substring, it returns its parent string.\n" | |
894 | "Otherwise, it returns @code{#f}\n" | |
88ed5759 MG |
895 | "@item read-only\n" |
896 | "@code{#t} if the string is read-only\n" | |
6ce6923b MG |
897 | "@item stringbuf-chars\n" |
898 | "A new string containing this string's stringbuf's characters\n" | |
899 | "@item stringbuf-length\n" | |
900 | "The number of characters in this stringbuf\n" | |
901 | "@item stringbuf-shared\n" | |
902 | "@code{#t} if this stringbuf is shared\n" | |
903 | "@item stringbuf-inline\n" | |
904 | "@code{#t} if this stringbuf's characters are stored in the\n" | |
905 | "cell itself, or @code{#f} if they were allocated in memory\n" | |
906 | "@item stringbuf-wide\n" | |
907 | "@code{#t} if this stringbuf's characters are stored in a\n" | |
908 | "32-bit buffer, or @code{#f} if they are stored in an 8-bit\n" | |
909 | "buffer\n" | |
910 | "@end table") | |
3ee86942 MV |
911 | #define FUNC_NAME s_scm_sys_string_dump |
912 | { | |
6ce6923b MG |
913 | SCM e1, e2, e3, e4, e5, e6, e7, e8, e9, e10; |
914 | SCM buf; | |
3ee86942 | 915 | SCM_VALIDATE_STRING (1, str); |
6ce6923b MG |
916 | |
917 | /* String info */ | |
918 | e1 = scm_cons (scm_from_locale_symbol ("string"), | |
919 | str); | |
920 | e2 = scm_cons (scm_from_locale_symbol ("start"), | |
921 | scm_from_size_t (STRING_START (str))); | |
922 | e3 = scm_cons (scm_from_locale_symbol ("length"), | |
923 | scm_from_size_t (STRING_LENGTH (str))); | |
924 | ||
3ee86942 MV |
925 | if (IS_SH_STRING (str)) |
926 | { | |
6ce6923b MG |
927 | e4 = scm_cons (scm_from_locale_symbol ("shared"), |
928 | SH_STRING_STRING (str)); | |
929 | buf = STRING_STRINGBUF (SH_STRING_STRING (str)); | |
3ee86942 MV |
930 | } |
931 | else | |
932 | { | |
6ce6923b MG |
933 | e4 = scm_cons (scm_from_locale_symbol ("shared"), |
934 | SCM_BOOL_F); | |
935 | buf = STRING_STRINGBUF (str); | |
936 | } | |
9c44cd45 | 937 | |
88ed5759 MG |
938 | if (IS_RO_STRING (str)) |
939 | e5 = scm_cons (scm_from_locale_symbol ("read-only"), | |
940 | SCM_BOOL_T); | |
941 | else | |
942 | e5 = scm_cons (scm_from_locale_symbol ("read-only"), | |
943 | SCM_BOOL_F); | |
587a3355 | 944 | |
6ce6923b | 945 | /* Stringbuf info */ |
6ce6923b MG |
946 | if (!STRINGBUF_WIDE (buf)) |
947 | { | |
948 | size_t len = STRINGBUF_LENGTH (buf); | |
949 | char *cbuf; | |
950 | SCM sbc = scm_i_make_string (len, &cbuf); | |
951 | memcpy (cbuf, STRINGBUF_CHARS (buf), len); | |
952 | e6 = scm_cons (scm_from_locale_symbol ("stringbuf-chars"), | |
953 | sbc); | |
3ee86942 | 954 | } |
6ce6923b MG |
955 | else |
956 | { | |
957 | size_t len = STRINGBUF_LENGTH (buf); | |
958 | scm_t_wchar *cbuf; | |
959 | SCM sbc = scm_i_make_wide_string (len, &cbuf); | |
960 | u32_cpy ((scm_t_uint32 *) cbuf, | |
961 | (scm_t_uint32 *) STRINGBUF_WIDE_CHARS (buf), len); | |
962 | e6 = scm_cons (scm_from_locale_symbol ("stringbuf-chars"), | |
963 | sbc); | |
964 | } | |
965 | e7 = scm_cons (scm_from_locale_symbol ("stringbuf-length"), | |
966 | scm_from_size_t (STRINGBUF_LENGTH (buf))); | |
967 | if (STRINGBUF_SHARED (buf)) | |
968 | e8 = scm_cons (scm_from_locale_symbol ("stringbuf-shared"), | |
969 | SCM_BOOL_T); | |
970 | else | |
971 | e8 = scm_cons (scm_from_locale_symbol ("stringbuf-shared"), | |
972 | SCM_BOOL_F); | |
973 | if (STRINGBUF_INLINE (buf)) | |
974 | e9 = scm_cons (scm_from_locale_symbol ("stringbuf-inline"), | |
975 | SCM_BOOL_T); | |
976 | else | |
977 | e9 = scm_cons (scm_from_locale_symbol ("stringbuf-inline"), | |
978 | SCM_BOOL_F); | |
979 | if (STRINGBUF_WIDE (buf)) | |
980 | e10 = scm_cons (scm_from_locale_symbol ("stringbuf-wide"), | |
981 | SCM_BOOL_T); | |
982 | else | |
983 | e10 = scm_cons (scm_from_locale_symbol ("stringbuf-wide"), | |
984 | SCM_BOOL_F); | |
985 | ||
986 | return scm_list_n (e1, e2, e3, e4, e5, e6, e7, e8, e9, e10, SCM_UNDEFINED); | |
3ee86942 MV |
987 | } |
988 | #undef FUNC_NAME | |
989 | ||
6ce6923b MG |
990 | SCM_DEFINE (scm_sys_symbol_dump, "%symbol-dump", 1, 0, 0, (SCM sym), |
991 | "Returns an association list containing debugging information\n" | |
992 | "for @var{sym}. The association list has the following entries." | |
993 | "@table @code\n" | |
994 | "@item symbol\n" | |
995 | "The symbol itself\n" | |
996 | "@item hash\n" | |
997 | "Its hash value\n" | |
88ed5759 MG |
998 | "@item interned\n" |
999 | "@code{#t} if it is an interned symbol\n" | |
6ce6923b MG |
1000 | "@item stringbuf-chars\n" |
1001 | "A new string containing this symbols's stringbuf's characters\n" | |
1002 | "@item stringbuf-length\n" | |
1003 | "The number of characters in this stringbuf\n" | |
1004 | "@item stringbuf-shared\n" | |
1005 | "@code{#t} if this stringbuf is shared\n" | |
1006 | "@item stringbuf-inline\n" | |
1007 | "@code{#t} if this stringbuf's characters are stored in the\n" | |
1008 | "cell itself, or @code{#f} if they were allocated in memory\n" | |
1009 | "@item stringbuf-wide\n" | |
1010 | "@code{#t} if this stringbuf's characters are stored in a\n" | |
1011 | "32-bit buffer, or @code{#f} if they are stored in an 8-bit\n" | |
1012 | "buffer\n" | |
1013 | "@end table") | |
3ee86942 MV |
1014 | #define FUNC_NAME s_scm_sys_symbol_dump |
1015 | { | |
6ce6923b MG |
1016 | SCM e1, e2, e3, e4, e5, e6, e7, e8; |
1017 | SCM buf; | |
3ee86942 | 1018 | SCM_VALIDATE_SYMBOL (1, sym); |
6ce6923b MG |
1019 | e1 = scm_cons (scm_from_locale_symbol ("symbol"), |
1020 | sym); | |
1021 | e2 = scm_cons (scm_from_locale_symbol ("hash"), | |
1022 | scm_from_ulong (scm_i_symbol_hash (sym))); | |
88ed5759 MG |
1023 | e3 = scm_cons (scm_from_locale_symbol ("interned"), |
1024 | scm_symbol_interned_p (sym)); | |
6ce6923b MG |
1025 | buf = SYMBOL_STRINGBUF (sym); |
1026 | ||
1027 | /* Stringbuf info */ | |
6ce6923b MG |
1028 | if (!STRINGBUF_WIDE (buf)) |
1029 | { | |
1030 | size_t len = STRINGBUF_LENGTH (buf); | |
1031 | char *cbuf; | |
1032 | SCM sbc = scm_i_make_string (len, &cbuf); | |
1033 | memcpy (cbuf, STRINGBUF_CHARS (buf), len); | |
1034 | e4 = scm_cons (scm_from_locale_symbol ("stringbuf-chars"), | |
1035 | sbc); | |
1036 | } | |
9c44cd45 | 1037 | else |
6ce6923b MG |
1038 | { |
1039 | size_t len = STRINGBUF_LENGTH (buf); | |
1040 | scm_t_wchar *cbuf; | |
1041 | SCM sbc = scm_i_make_wide_string (len, &cbuf); | |
1042 | u32_cpy ((scm_t_uint32 *) cbuf, | |
1043 | (scm_t_uint32 *) STRINGBUF_WIDE_CHARS (buf), len); | |
1044 | e4 = scm_cons (scm_from_locale_symbol ("stringbuf-chars"), | |
1045 | sbc); | |
1046 | } | |
1047 | e5 = scm_cons (scm_from_locale_symbol ("stringbuf-length"), | |
1048 | scm_from_size_t (STRINGBUF_LENGTH (buf))); | |
1049 | if (STRINGBUF_SHARED (buf)) | |
1050 | e6 = scm_cons (scm_from_locale_symbol ("stringbuf-shared"), | |
1051 | SCM_BOOL_T); | |
1052 | else | |
1053 | e6 = scm_cons (scm_from_locale_symbol ("stringbuf-shared"), | |
1054 | SCM_BOOL_F); | |
1055 | if (STRINGBUF_INLINE (buf)) | |
1056 | e7 = scm_cons (scm_from_locale_symbol ("stringbuf-inline"), | |
1057 | SCM_BOOL_T); | |
1058 | else | |
1059 | e7 = scm_cons (scm_from_locale_symbol ("stringbuf-inline"), | |
1060 | SCM_BOOL_F); | |
1061 | if (STRINGBUF_WIDE (buf)) | |
1062 | e8 = scm_cons (scm_from_locale_symbol ("stringbuf-wide"), | |
1063 | SCM_BOOL_T); | |
1064 | else | |
1065 | e8 = scm_cons (scm_from_locale_symbol ("stringbuf-wide"), | |
1066 | SCM_BOOL_F); | |
1067 | return scm_list_n (e1, e2, e3, e4, e5, e6, e7, e8, SCM_UNDEFINED); | |
1068 | ||
3ee86942 MV |
1069 | } |
1070 | #undef FUNC_NAME | |
1071 | ||
6ce6923b MG |
1072 | #if SCM_STRING_LENGTH_HISTOGRAM |
1073 | ||
9c44cd45 | 1074 | SCM_DEFINE (scm_sys_stringbuf_hist, "%stringbuf-hist", 0, 0, 0, (void), "") |
e1b29f6a | 1075 | #define FUNC_NAME s_scm_sys_stringbuf_hist |
3ee86942 MV |
1076 | { |
1077 | int i; | |
1078 | for (i = 0; i < 1000; i++) | |
1079 | if (lenhist[i]) | |
1080 | fprintf (stderr, " %3d: %u\n", i, lenhist[i]); | |
1081 | fprintf (stderr, ">999: %u\n", lenhist[1000]); | |
1082 | return SCM_UNSPECIFIED; | |
be54b15d DH |
1083 | } |
1084 | #undef FUNC_NAME | |
1085 | ||
3ee86942 MV |
1086 | #endif |
1087 | ||
1088 | \f | |
1089 | ||
1090 | SCM_DEFINE (scm_string_p, "string?", 1, 0, 0, | |
1091 | (SCM obj), | |
1092 | "Return @code{#t} if @var{obj} is a string, else @code{#f}.") | |
1093 | #define FUNC_NAME s_scm_string_p | |
1094 | { | |
1095 | return scm_from_bool (IS_STRING (obj)); | |
1096 | } | |
1097 | #undef FUNC_NAME | |
1098 | ||
1099 | ||
1100 | SCM_REGISTER_PROC (s_scm_list_to_string, "list->string", 1, 0, 0, scm_string); | |
1101 | ||
1102 | SCM_DEFINE (scm_string, "string", 0, 0, 1, | |
1103 | (SCM chrs), | |
1104 | "@deffnx {Scheme Procedure} list->string chrs\n" | |
1105 | "Return a newly allocated string composed of the arguments,\n" | |
1106 | "@var{chrs}.") | |
1107 | #define FUNC_NAME s_scm_string | |
1108 | { | |
9aa27c1a | 1109 | SCM result = SCM_BOOL_F; |
9c44cd45 | 1110 | SCM rest; |
3ee86942 | 1111 | size_t len; |
9c44cd45 MG |
1112 | size_t p = 0; |
1113 | long i; | |
9aa27c1a | 1114 | int wide = 0; |
3ee86942 | 1115 | |
9c44cd45 MG |
1116 | /* Verify that this is a list of chars. */ |
1117 | i = scm_ilength (chrs); | |
3c7cf7f5 MG |
1118 | SCM_ASSERT (i >= 0, chrs, SCM_ARG1, FUNC_NAME); |
1119 | ||
9c44cd45 MG |
1120 | len = (size_t) i; |
1121 | rest = chrs; | |
3ee86942 | 1122 | |
9c44cd45 | 1123 | while (len > 0 && scm_is_pair (rest)) |
3ee86942 | 1124 | { |
9c44cd45 | 1125 | SCM elt = SCM_CAR (rest); |
3ee86942 | 1126 | SCM_VALIDATE_CHAR (SCM_ARGn, elt); |
9aa27c1a MG |
1127 | if (SCM_CHAR (elt) > 0xFF) |
1128 | wide = 1; | |
9c44cd45 MG |
1129 | rest = SCM_CDR (rest); |
1130 | len--; | |
1131 | scm_remember_upto_here_1 (elt); | |
1132 | } | |
1133 | ||
1134 | /* Construct a string containing this list of chars. */ | |
1135 | len = (size_t) i; | |
1136 | rest = chrs; | |
1137 | ||
9aa27c1a | 1138 | if (wide == 0) |
9c44cd45 | 1139 | { |
9aa27c1a MG |
1140 | result = scm_i_make_string (len, NULL); |
1141 | result = scm_i_string_start_writing (result); | |
1142 | char *buf = scm_i_string_writable_chars (result); | |
1143 | while (len > 0 && scm_is_pair (rest)) | |
1144 | { | |
1145 | SCM elt = SCM_CAR (rest); | |
1146 | buf[p] = (unsigned char) SCM_CHAR (elt); | |
1147 | p++; | |
1148 | rest = SCM_CDR (rest); | |
1149 | len--; | |
1150 | scm_remember_upto_here_1 (elt); | |
1151 | } | |
1152 | } | |
1153 | else | |
1154 | { | |
1155 | result = scm_i_make_wide_string (len, NULL); | |
1156 | result = scm_i_string_start_writing (result); | |
1157 | scm_t_wchar *buf = scm_i_string_writable_wide_chars (result); | |
1158 | while (len > 0 && scm_is_pair (rest)) | |
1159 | { | |
1160 | SCM elt = SCM_CAR (rest); | |
1161 | buf[p] = SCM_CHAR (elt); | |
1162 | p++; | |
1163 | rest = SCM_CDR (rest); | |
1164 | len--; | |
1165 | scm_remember_upto_here_1 (elt); | |
1166 | } | |
3ee86942 | 1167 | } |
9c44cd45 MG |
1168 | scm_i_string_stop_writing (); |
1169 | ||
3ee86942 MV |
1170 | if (len > 0) |
1171 | scm_misc_error (NULL, "list changed while constructing string", SCM_EOL); | |
9c44cd45 | 1172 | if (!scm_is_null (rest)) |
3ee86942 MV |
1173 | scm_wrong_type_arg_msg (NULL, 0, chrs, "proper list"); |
1174 | ||
1175 | return result; | |
1176 | } | |
1177 | #undef FUNC_NAME | |
be54b15d | 1178 | |
3b3b36dd | 1179 | SCM_DEFINE (scm_make_string, "make-string", 1, 1, 0, |
6fa73e72 | 1180 | (SCM k, SCM chr), |
0d26a824 MG |
1181 | "Return a newly allocated string of\n" |
1182 | "length @var{k}. If @var{chr} is given, then all elements of\n" | |
1183 | "the string are initialized to @var{chr}, otherwise the contents\n" | |
9401323e | 1184 | "of the @var{string} are unspecified.") |
1bbd0b84 | 1185 | #define FUNC_NAME s_scm_make_string |
0f2d19dd | 1186 | { |
3ee86942 MV |
1187 | return scm_c_make_string (scm_to_size_t (k), chr); |
1188 | } | |
1189 | #undef FUNC_NAME | |
1190 | ||
1191 | SCM | |
1192 | scm_c_make_string (size_t len, SCM chr) | |
1193 | #define FUNC_NAME NULL | |
1194 | { | |
9c44cd45 MG |
1195 | size_t p; |
1196 | SCM res = scm_i_make_string (len, NULL); | |
cb0d8be2 | 1197 | |
e11e83f3 MV |
1198 | if (!SCM_UNBNDP (chr)) |
1199 | { | |
3ee86942 | 1200 | SCM_VALIDATE_CHAR (0, chr); |
9c44cd45 MG |
1201 | res = scm_i_string_start_writing (res); |
1202 | for (p = 0; p < len; p++) | |
1203 | scm_i_string_set_x (res, p, SCM_CHAR (chr)); | |
1204 | scm_i_string_stop_writing (); | |
0f2d19dd | 1205 | } |
e11e83f3 MV |
1206 | |
1207 | return res; | |
0f2d19dd | 1208 | } |
1bbd0b84 | 1209 | #undef FUNC_NAME |
0f2d19dd | 1210 | |
3b3b36dd | 1211 | SCM_DEFINE (scm_string_length, "string-length", 1, 0, 0, |
0d26a824 MG |
1212 | (SCM string), |
1213 | "Return the number of characters in @var{string}.") | |
1bbd0b84 | 1214 | #define FUNC_NAME s_scm_string_length |
0f2d19dd | 1215 | { |
d1ca2c64 | 1216 | SCM_VALIDATE_STRING (1, string); |
3ee86942 | 1217 | return scm_from_size_t (STRING_LENGTH (string)); |
0f2d19dd | 1218 | } |
1bbd0b84 | 1219 | #undef FUNC_NAME |
0f2d19dd | 1220 | |
f8ba2bb9 | 1221 | SCM_DEFINE (scm_string_bytes_per_char, "string-bytes-per-char", 1, 0, 0, |
9c44cd45 MG |
1222 | (SCM string), |
1223 | "Return the bytes used to represent a character in @var{string}." | |
1224 | "This will return 1 or 4.") | |
f8ba2bb9 | 1225 | #define FUNC_NAME s_scm_string_bytes_per_char |
9c44cd45 MG |
1226 | { |
1227 | SCM_VALIDATE_STRING (1, string); | |
1228 | if (!scm_i_is_narrow_string (string)) | |
1229 | return scm_from_int (4); | |
1230 | ||
1231 | return scm_from_int (1); | |
1232 | } | |
1233 | #undef FUNC_NAME | |
1234 | ||
3ee86942 MV |
1235 | size_t |
1236 | scm_c_string_length (SCM string) | |
1237 | { | |
1238 | if (!IS_STRING (string)) | |
1239 | scm_wrong_type_arg_msg (NULL, 0, string, "string"); | |
1240 | return STRING_LENGTH (string); | |
1241 | } | |
1242 | ||
bd9e24b3 | 1243 | SCM_DEFINE (scm_string_ref, "string-ref", 2, 0, 0, |
6fa73e72 | 1244 | (SCM str, SCM k), |
9c44cd45 MG |
1245 | "Return character @var{k} of @var{str} using zero-origin\n" |
1246 | "indexing. @var{k} must be a valid index of @var{str}.") | |
1bbd0b84 | 1247 | #define FUNC_NAME s_scm_string_ref |
0f2d19dd | 1248 | { |
3ae3166b | 1249 | size_t len; |
a55c2b68 | 1250 | unsigned long idx; |
bd9e24b3 | 1251 | |
d1ca2c64 | 1252 | SCM_VALIDATE_STRING (1, str); |
3ae3166b LC |
1253 | |
1254 | len = scm_i_string_length (str); | |
1255 | if (SCM_LIKELY (len > 0)) | |
1256 | idx = scm_to_unsigned_integer (k, 0, len - 1); | |
1257 | else | |
1258 | scm_out_of_range (NULL, k); | |
1259 | ||
9c44cd45 MG |
1260 | if (scm_i_is_narrow_string (str)) |
1261 | return SCM_MAKE_CHAR (scm_i_string_chars (str)[idx]); | |
1262 | else | |
1263 | return SCM_MAKE_CHAR (scm_i_string_wide_chars (str)[idx]); | |
0f2d19dd | 1264 | } |
1bbd0b84 | 1265 | #undef FUNC_NAME |
0f2d19dd | 1266 | |
3ee86942 MV |
1267 | SCM |
1268 | scm_c_string_ref (SCM str, size_t p) | |
1269 | { | |
1270 | if (p >= scm_i_string_length (str)) | |
1271 | scm_out_of_range (NULL, scm_from_size_t (p)); | |
9c44cd45 MG |
1272 | if (scm_i_is_narrow_string (str)) |
1273 | return SCM_MAKE_CHAR (scm_i_string_chars (str)[p]); | |
1274 | else | |
1275 | return SCM_MAKE_CHAR (scm_i_string_wide_chars (str)[p]); | |
1276 | ||
3ee86942 | 1277 | } |
f0942910 | 1278 | |
3b3b36dd | 1279 | SCM_DEFINE (scm_string_set_x, "string-set!", 3, 0, 0, |
6fa73e72 | 1280 | (SCM str, SCM k, SCM chr), |
9c44cd45 MG |
1281 | "Store @var{chr} in element @var{k} of @var{str} and return\n" |
1282 | "an unspecified value. @var{k} must be a valid index of\n" | |
1283 | "@var{str}.") | |
1bbd0b84 | 1284 | #define FUNC_NAME s_scm_string_set_x |
0f2d19dd | 1285 | { |
3ae3166b | 1286 | size_t len; |
a55c2b68 MV |
1287 | unsigned long idx; |
1288 | ||
f0942910 | 1289 | SCM_VALIDATE_STRING (1, str); |
3ae3166b LC |
1290 | |
1291 | len = scm_i_string_length (str); | |
1292 | if (SCM_LIKELY (len > 0)) | |
1293 | idx = scm_to_unsigned_integer (k, 0, len - 1); | |
1294 | else | |
1295 | scm_out_of_range (NULL, k); | |
1296 | ||
34d19ef6 | 1297 | SCM_VALIDATE_CHAR (3, chr); |
9c44cd45 MG |
1298 | str = scm_i_string_start_writing (str); |
1299 | scm_i_string_set_x (str, idx, SCM_CHAR (chr)); | |
1300 | scm_i_string_stop_writing (); | |
1301 | ||
0f2d19dd JB |
1302 | return SCM_UNSPECIFIED; |
1303 | } | |
1bbd0b84 | 1304 | #undef FUNC_NAME |
0f2d19dd | 1305 | |
3ee86942 MV |
1306 | void |
1307 | scm_c_string_set_x (SCM str, size_t p, SCM chr) | |
1308 | { | |
1309 | if (p >= scm_i_string_length (str)) | |
1310 | scm_out_of_range (NULL, scm_from_size_t (p)); | |
9c44cd45 MG |
1311 | str = scm_i_string_start_writing (str); |
1312 | scm_i_string_set_x (str, p, SCM_CHAR (chr)); | |
1313 | scm_i_string_stop_writing (); | |
3ee86942 | 1314 | } |
0f2d19dd | 1315 | |
3b3b36dd | 1316 | SCM_DEFINE (scm_substring, "substring", 2, 1, 0, |
0d26a824 MG |
1317 | (SCM str, SCM start, SCM end), |
1318 | "Return a newly allocated string formed from the characters\n" | |
1319 | "of @var{str} beginning with index @var{start} (inclusive) and\n" | |
1320 | "ending with index @var{end} (exclusive).\n" | |
1321 | "@var{str} must be a string, @var{start} and @var{end} must be\n" | |
1322 | "exact integers satisfying:\n\n" | |
1323 | "0 <= @var{start} <= @var{end} <= (string-length @var{str}).") | |
1bbd0b84 | 1324 | #define FUNC_NAME s_scm_substring |
0f2d19dd | 1325 | { |
3ee86942 | 1326 | size_t len, from, to; |
685c0d71 | 1327 | |
d1ca2c64 | 1328 | SCM_VALIDATE_STRING (1, str); |
3ee86942 MV |
1329 | len = scm_i_string_length (str); |
1330 | from = scm_to_unsigned_integer (start, 0, len); | |
a55c2b68 | 1331 | if (SCM_UNBNDP (end)) |
3ee86942 | 1332 | to = len; |
a55c2b68 | 1333 | else |
3ee86942 MV |
1334 | to = scm_to_unsigned_integer (end, from, len); |
1335 | return scm_i_substring (str, from, to); | |
0f2d19dd | 1336 | } |
1bbd0b84 | 1337 | #undef FUNC_NAME |
0f2d19dd | 1338 | |
ed35de72 MV |
1339 | SCM_DEFINE (scm_substring_read_only, "substring/read-only", 2, 1, 0, |
1340 | (SCM str, SCM start, SCM end), | |
1341 | "Return a newly allocated string formed from the characters\n" | |
1342 | "of @var{str} beginning with index @var{start} (inclusive) and\n" | |
1343 | "ending with index @var{end} (exclusive).\n" | |
1344 | "@var{str} must be a string, @var{start} and @var{end} must be\n" | |
1345 | "exact integers satisfying:\n" | |
1346 | "\n" | |
1347 | "0 <= @var{start} <= @var{end} <= (string-length @var{str}).\n" | |
1348 | "\n" | |
1349 | "The returned string is read-only.\n") | |
1350 | #define FUNC_NAME s_scm_substring_read_only | |
1351 | { | |
1352 | size_t len, from, to; | |
1353 | ||
1354 | SCM_VALIDATE_STRING (1, str); | |
1355 | len = scm_i_string_length (str); | |
1356 | from = scm_to_unsigned_integer (start, 0, len); | |
1357 | if (SCM_UNBNDP (end)) | |
1358 | to = len; | |
1359 | else | |
1360 | to = scm_to_unsigned_integer (end, from, len); | |
1361 | return scm_i_substring_read_only (str, from, to); | |
1362 | } | |
1363 | #undef FUNC_NAME | |
1364 | ||
3ee86942 MV |
1365 | SCM_DEFINE (scm_substring_copy, "substring/copy", 2, 1, 0, |
1366 | (SCM str, SCM start, SCM end), | |
1367 | "Return a newly allocated string formed from the characters\n" | |
1368 | "of @var{str} beginning with index @var{start} (inclusive) and\n" | |
1369 | "ending with index @var{end} (exclusive).\n" | |
1370 | "@var{str} must be a string, @var{start} and @var{end} must be\n" | |
1371 | "exact integers satisfying:\n\n" | |
1372 | "0 <= @var{start} <= @var{end} <= (string-length @var{str}).") | |
1373 | #define FUNC_NAME s_scm_substring_copy | |
1374 | { | |
e1b29f6a MV |
1375 | /* For the Scheme version, START is mandatory, but for the C |
1376 | version, it is optional. See scm_string_copy in srfi-13.c for a | |
1377 | rationale. | |
1378 | */ | |
1379 | ||
1380 | size_t from, to; | |
3ee86942 MV |
1381 | |
1382 | SCM_VALIDATE_STRING (1, str); | |
e1b29f6a MV |
1383 | scm_i_get_substring_spec (scm_i_string_length (str), |
1384 | start, &from, end, &to); | |
3ee86942 MV |
1385 | return scm_i_substring_copy (str, from, to); |
1386 | } | |
1387 | #undef FUNC_NAME | |
1388 | ||
1389 | SCM_DEFINE (scm_substring_shared, "substring/shared", 2, 1, 0, | |
1390 | (SCM str, SCM start, SCM end), | |
1391 | "Return string that indirectly refers to the characters\n" | |
1392 | "of @var{str} beginning with index @var{start} (inclusive) and\n" | |
1393 | "ending with index @var{end} (exclusive).\n" | |
1394 | "@var{str} must be a string, @var{start} and @var{end} must be\n" | |
1395 | "exact integers satisfying:\n\n" | |
1396 | "0 <= @var{start} <= @var{end} <= (string-length @var{str}).") | |
1397 | #define FUNC_NAME s_scm_substring_shared | |
1398 | { | |
1399 | size_t len, from, to; | |
1400 | ||
1401 | SCM_VALIDATE_STRING (1, str); | |
1402 | len = scm_i_string_length (str); | |
1403 | from = scm_to_unsigned_integer (start, 0, len); | |
1404 | if (SCM_UNBNDP (end)) | |
1405 | to = len; | |
1406 | else | |
1407 | to = scm_to_unsigned_integer (end, from, len); | |
1408 | return scm_i_substring_shared (str, from, to); | |
1409 | } | |
1410 | #undef FUNC_NAME | |
685c0d71 | 1411 | |
3b3b36dd | 1412 | SCM_DEFINE (scm_string_append, "string-append", 0, 0, 1, |
6fa73e72 | 1413 | (SCM args), |
9c44cd45 | 1414 | "Return a newly allocated string whose characters form the\n" |
0d26a824 | 1415 | "concatenation of the given strings, @var{args}.") |
1bbd0b84 | 1416 | #define FUNC_NAME s_scm_string_append |
0f2d19dd JB |
1417 | { |
1418 | SCM res; | |
9c44cd45 MG |
1419 | size_t len = 0; |
1420 | int wide = 0; | |
c829a427 | 1421 | SCM l, s; |
bd4911ef | 1422 | size_t i; |
9909c395 MG |
1423 | union |
1424 | { | |
1425 | char *narrow; | |
1426 | scm_t_wchar *wide; | |
1427 | } data; | |
af45e3b0 DH |
1428 | |
1429 | SCM_VALIDATE_REST_ARGUMENT (args); | |
9c44cd45 | 1430 | for (l = args; !scm_is_null (l); l = SCM_CDR (l)) |
c829a427 MV |
1431 | { |
1432 | s = SCM_CAR (l); | |
1433 | SCM_VALIDATE_STRING (SCM_ARGn, s); | |
9c44cd45 MG |
1434 | len += scm_i_string_length (s); |
1435 | if (!scm_i_is_narrow_string (s)) | |
1436 | wide = 1; | |
c829a427 | 1437 | } |
9909c395 | 1438 | data.narrow = NULL; |
9c44cd45 | 1439 | if (!wide) |
9909c395 | 1440 | res = scm_i_make_string (len, &data.narrow); |
9c44cd45 | 1441 | else |
9909c395 | 1442 | res = scm_i_make_wide_string (len, &data.wide); |
9c44cd45 MG |
1443 | |
1444 | for (l = args; !scm_is_null (l); l = SCM_CDR (l)) | |
c829a427 | 1445 | { |
edea856c | 1446 | size_t len; |
c829a427 | 1447 | s = SCM_CAR (l); |
3ee86942 | 1448 | SCM_VALIDATE_STRING (SCM_ARGn, s); |
edea856c | 1449 | len = scm_i_string_length (s); |
9c44cd45 MG |
1450 | if (!wide) |
1451 | { | |
9909c395 MG |
1452 | memcpy (data.narrow, scm_i_string_chars (s), len); |
1453 | data.narrow += len; | |
9c44cd45 MG |
1454 | } |
1455 | else | |
1456 | { | |
1457 | if (scm_i_is_narrow_string (s)) | |
1458 | { | |
1459 | for (i = 0; i < scm_i_string_length (s); i++) | |
9909c395 | 1460 | data.wide[i] = (unsigned char) scm_i_string_chars (s)[i]; |
9c44cd45 MG |
1461 | } |
1462 | else | |
9909c395 | 1463 | u32_cpy ((scm_t_uint32 *) data.wide, |
9c44cd45 | 1464 | (scm_t_uint32 *) scm_i_string_wide_chars (s), len); |
9909c395 | 1465 | data.wide += len; |
9c44cd45 | 1466 | } |
c829a427 MV |
1467 | scm_remember_upto_here_1 (s); |
1468 | } | |
0f2d19dd JB |
1469 | return res; |
1470 | } | |
1bbd0b84 | 1471 | #undef FUNC_NAME |
0f2d19dd | 1472 | |
c829a427 MV |
1473 | int |
1474 | scm_is_string (SCM obj) | |
1475 | { | |
3ee86942 | 1476 | return IS_STRING (obj); |
c829a427 | 1477 | } |
24933780 | 1478 | |
587a3355 MG |
1479 | static SCM |
1480 | scm_from_stringn (const char *str, size_t len, const char *encoding, | |
1481 | scm_t_string_failed_conversion_handler handler) | |
1482 | { | |
1483 | size_t u32len, i; | |
1484 | scm_t_wchar *u32; | |
1485 | int wide = 0; | |
1486 | SCM res; | |
1487 | ||
889975e5 MG |
1488 | if (encoding == NULL) |
1489 | { | |
1490 | /* If encoding is null, use Latin-1. */ | |
1491 | char *buf; | |
1492 | res = scm_i_make_string (len, &buf); | |
1493 | memcpy (buf, str, len); | |
1494 | return res; | |
1495 | } | |
1496 | ||
587a3355 MG |
1497 | u32len = 0; |
1498 | u32 = (scm_t_wchar *) u32_conv_from_encoding (encoding, | |
1499 | (enum iconv_ilseq_handler) | |
1500 | handler, | |
1501 | str, len, | |
1502 | NULL, | |
1503 | NULL, &u32len); | |
1504 | ||
1505 | if (u32 == NULL) | |
1506 | { | |
1507 | if (errno == ENOMEM) | |
1508 | scm_memory_error ("locale string conversion"); | |
1509 | else | |
1510 | { | |
889975e5 | 1511 | /* There are invalid sequences in the input string. */ |
587a3355 MG |
1512 | SCM errstr; |
1513 | char *dst; | |
587a3355 MG |
1514 | errstr = scm_i_make_string (len, &dst); |
1515 | memcpy (dst, str, len); | |
1516 | scm_misc_error (NULL, "input locale conversion error from ~s: ~s", | |
1517 | scm_list_2 (scm_from_locale_string (encoding), | |
1518 | errstr)); | |
1519 | scm_remember_upto_here_1 (errstr); | |
1520 | } | |
1521 | } | |
1522 | ||
1523 | i = 0; | |
1524 | while (i < u32len) | |
1525 | if (u32[i++] > 0xFF) | |
1526 | { | |
1527 | wide = 1; | |
1528 | break; | |
1529 | } | |
1530 | ||
1531 | if (!wide) | |
1532 | { | |
1533 | char *dst; | |
1534 | res = scm_i_make_string (u32len, &dst); | |
1535 | for (i = 0; i < u32len; i ++) | |
1536 | dst[i] = (unsigned char) u32[i]; | |
1537 | dst[u32len] = '\0'; | |
1538 | } | |
1539 | else | |
1540 | { | |
1541 | scm_t_wchar *wdst; | |
1542 | res = scm_i_make_wide_string (u32len, &wdst); | |
1543 | u32_cpy ((scm_t_uint32 *) wdst, (scm_t_uint32 *) u32, u32len); | |
1544 | wdst[u32len] = 0; | |
1545 | } | |
1546 | ||
1547 | free (u32); | |
1548 | return res; | |
1549 | } | |
1550 | ||
889975e5 MG |
1551 | SCM |
1552 | scm_from_locale_stringn (const char *str, size_t len) | |
1553 | { | |
1554 | const char *enc; | |
1555 | scm_t_string_failed_conversion_handler hndl; | |
1556 | SCM inport; | |
1557 | scm_t_port *pt; | |
1558 | ||
1559 | if (len == (size_t) -1) | |
1560 | len = strlen (str); | |
1561 | if (len == 0) | |
1562 | return scm_nullstr; | |
1563 | ||
1564 | inport = scm_current_input_port (); | |
1565 | if (!SCM_UNBNDP (inport) && SCM_OPINPORTP (inport)) | |
1566 | { | |
1567 | pt = SCM_PTAB_ENTRY (inport); | |
1568 | enc = pt->encoding; | |
1569 | hndl = pt->ilseq_handler; | |
1570 | } | |
1571 | else | |
1572 | { | |
1573 | enc = NULL; | |
1574 | hndl = SCM_FAILED_CONVERSION_ERROR; | |
1575 | } | |
1576 | ||
1577 | return scm_from_stringn (str, len, enc, hndl); | |
1578 | } | |
1579 | ||
1580 | SCM | |
1581 | scm_from_locale_string (const char *str) | |
1582 | { | |
1583 | if (str == NULL) | |
1584 | return scm_nullstr; | |
1585 | ||
1586 | return scm_from_locale_stringn (str, -1); | |
1587 | } | |
1588 | ||
587a3355 MG |
1589 | SCM |
1590 | scm_i_from_utf8_string (const scm_t_uint8 *str) | |
1591 | { | |
1592 | return scm_from_stringn ((const char *) str, | |
1593 | strlen ((char *) str), "UTF-8", | |
1594 | SCM_FAILED_CONVERSION_ERROR); | |
1595 | } | |
1596 | ||
50b1996f MG |
1597 | /* Create a new scheme string from the C string STR. The memory of |
1598 | STR may be used directly as storage for the new string. */ | |
c829a427 MV |
1599 | SCM |
1600 | scm_take_locale_stringn (char *str, size_t len) | |
1601 | { | |
48ddf0d9 KR |
1602 | SCM buf, res; |
1603 | ||
9c44cd45 | 1604 | if (len == (size_t) -1) |
48ddf0d9 | 1605 | len = strlen (str); |
c829a427 MV |
1606 | else |
1607 | { | |
48ddf0d9 KR |
1608 | /* Ensure STR is null terminated. A realloc for 1 extra byte should |
1609 | often be satisfied from the alignment padding after the block, with | |
1610 | no actual data movement. */ | |
9c44cd45 | 1611 | str = scm_realloc (str, len + 1); |
48ddf0d9 | 1612 | str[len] = '\0'; |
c829a427 | 1613 | } |
c829a427 | 1614 | |
fd0a5bbc | 1615 | buf = scm_i_take_stringbufn (str, len); |
3ee86942 | 1616 | res = scm_double_cell (STRING_TAG, |
9c44cd45 | 1617 | SCM_UNPACK (buf), (scm_t_bits) 0, (scm_t_bits) len); |
c829a427 MV |
1618 | return res; |
1619 | } | |
1620 | ||
48ddf0d9 KR |
1621 | SCM |
1622 | scm_take_locale_string (char *str) | |
1623 | { | |
1624 | return scm_take_locale_stringn (str, -1); | |
1625 | } | |
1626 | ||
9c44cd45 MG |
1627 | /* Change libunistring escapes (\uXXXX and \UXXXXXXXX) to \xXX \uXXXX |
1628 | and \UXXXXXX. */ | |
1629 | static void | |
1630 | unistring_escapes_to_guile_escapes (char **bufp, size_t *lenp) | |
1631 | { | |
1632 | char *before, *after; | |
1633 | size_t i, j; | |
1634 | ||
1635 | before = *bufp; | |
1636 | after = *bufp; | |
1637 | i = 0; | |
1638 | j = 0; | |
1639 | while (i < *lenp) | |
1640 | { | |
1641 | if ((i <= *lenp - 6) | |
1642 | && before[i] == '\\' | |
1643 | && before[i + 1] == 'u' | |
1644 | && before[i + 2] == '0' && before[i + 3] == '0') | |
1645 | { | |
1646 | /* Convert \u00NN to \xNN */ | |
1647 | after[j] = '\\'; | |
1648 | after[j + 1] = 'x'; | |
30a6b9ca MG |
1649 | after[j + 2] = tolower ((int) before[i + 4]); |
1650 | after[j + 3] = tolower ((int) before[i + 5]); | |
9c44cd45 MG |
1651 | i += 6; |
1652 | j += 4; | |
1653 | } | |
1654 | else if ((i <= *lenp - 10) | |
1655 | && before[i] == '\\' | |
1656 | && before[i + 1] == 'U' | |
1657 | && before[i + 2] == '0' && before[i + 3] == '0') | |
1658 | { | |
1659 | /* Convert \U00NNNNNN to \UNNNNNN */ | |
1660 | after[j] = '\\'; | |
1661 | after[j + 1] = 'U'; | |
30a6b9ca MG |
1662 | after[j + 2] = tolower ((int) before[i + 4]); |
1663 | after[j + 3] = tolower ((int) before[i + 5]); | |
1664 | after[j + 4] = tolower ((int) before[i + 6]); | |
1665 | after[j + 5] = tolower ((int) before[i + 7]); | |
1666 | after[j + 6] = tolower ((int) before[i + 8]); | |
1667 | after[j + 7] = tolower ((int) before[i + 9]); | |
9c44cd45 MG |
1668 | i += 10; |
1669 | j += 8; | |
1670 | } | |
1671 | else | |
1672 | { | |
1673 | after[j] = before[i]; | |
1674 | i++; | |
1675 | j++; | |
1676 | } | |
1677 | } | |
1678 | *lenp = j; | |
1679 | after = scm_realloc (after, j); | |
1680 | } | |
1681 | ||
c829a427 | 1682 | char * |
9c44cd45 | 1683 | scm_to_locale_stringn (SCM str, size_t * lenp) |
c829a427 | 1684 | { |
889975e5 MG |
1685 | SCM outport; |
1686 | scm_t_port *pt; | |
9c44cd45 MG |
1687 | const char *enc; |
1688 | ||
889975e5 MG |
1689 | outport = scm_current_output_port (); |
1690 | if (!SCM_UNBNDP (outport) && SCM_OPOUTPORTP (outport)) | |
1691 | { | |
1692 | pt = SCM_PTAB_ENTRY (outport); | |
1693 | enc = pt->encoding; | |
1694 | } | |
1695 | else | |
1696 | enc = NULL; | |
9c44cd45 | 1697 | |
889975e5 MG |
1698 | return scm_to_stringn (str, lenp, |
1699 | enc, | |
1700 | scm_i_get_conversion_strategy (SCM_BOOL_F)); | |
9c44cd45 MG |
1701 | } |
1702 | ||
1703 | /* Low-level scheme to C string conversion function. */ | |
1704 | char * | |
587a3355 | 1705 | scm_to_stringn (SCM str, size_t *lenp, const char *encoding, |
eca29b02 | 1706 | scm_t_string_failed_conversion_handler handler) |
9c44cd45 | 1707 | { |
9c44cd45 MG |
1708 | char *buf; |
1709 | size_t ilen, len, i; | |
889975e5 MG |
1710 | int ret; |
1711 | const char *enc; | |
4d4528e7 | 1712 | |
3ee86942 | 1713 | if (!scm_is_string (str)) |
c829a427 | 1714 | scm_wrong_type_arg_msg (NULL, 0, str, "string"); |
9c44cd45 MG |
1715 | ilen = scm_i_string_length (str); |
1716 | ||
1717 | if (ilen == 0) | |
1718 | { | |
1719 | buf = scm_malloc (1); | |
1720 | buf[0] = '\0'; | |
1721 | if (lenp) | |
1722 | *lenp = 0; | |
1723 | return buf; | |
1724 | } | |
587a3355 | 1725 | |
c829a427 | 1726 | if (lenp == NULL) |
9c44cd45 MG |
1727 | for (i = 0; i < ilen; i++) |
1728 | if (scm_i_string_ref (str, i) == '\0') | |
1729 | scm_misc_error (NULL, | |
1730 | "string contains #\\nul character: ~S", | |
1731 | scm_list_1 (str)); | |
1732 | ||
889975e5 | 1733 | if (scm_i_is_narrow_string (str) && (encoding == NULL)) |
c829a427 | 1734 | { |
889975e5 MG |
1735 | /* If using native Latin-1 encoding, just copy the string |
1736 | contents. */ | |
9c44cd45 MG |
1737 | if (lenp) |
1738 | { | |
1739 | buf = scm_malloc (ilen); | |
1740 | memcpy (buf, scm_i_string_chars (str), ilen); | |
1741 | *lenp = ilen; | |
1742 | return buf; | |
1743 | } | |
1744 | else | |
1745 | { | |
1746 | buf = scm_malloc (ilen + 1); | |
1747 | memcpy (buf, scm_i_string_chars (str), ilen); | |
1748 | buf[ilen] = '\0'; | |
1749 | return buf; | |
1750 | } | |
c829a427 | 1751 | } |
9c44cd45 | 1752 | |
587a3355 | 1753 | |
9c44cd45 MG |
1754 | buf = NULL; |
1755 | len = 0; | |
889975e5 MG |
1756 | enc = encoding; |
1757 | if (enc == NULL) | |
1758 | enc = "ISO-8859-1"; | |
1759 | if (scm_i_is_narrow_string (str)) | |
1760 | { | |
1761 | ret = mem_iconveh (scm_i_string_chars (str), ilen, | |
1762 | "ISO-8859-1", enc, | |
1763 | (enum iconv_ilseq_handler) handler, NULL, | |
1764 | &buf, &len); | |
9c44cd45 | 1765 | |
889975e5 MG |
1766 | if (ret == 0 && handler == SCM_FAILED_CONVERSION_ESCAPE_SEQUENCE) |
1767 | unistring_escapes_to_guile_escapes (&buf, &len); | |
9c44cd45 | 1768 | |
889975e5 MG |
1769 | if (ret != 0) |
1770 | { | |
1771 | scm_misc_error (NULL, "cannot convert to output locale ~s: \"~s\"", | |
1772 | scm_list_2 (scm_from_locale_string (enc), | |
1773 | str)); | |
1774 | } | |
1775 | } | |
1776 | else | |
1777 | { | |
1778 | buf = u32_conv_to_encoding (enc, | |
1779 | (enum iconv_ilseq_handler) handler, | |
1780 | (scm_t_uint32 *) scm_i_string_wide_chars (str), | |
1781 | ilen, | |
1782 | NULL, | |
1783 | NULL, &len); | |
1784 | if (buf == NULL) | |
1785 | { | |
1786 | scm_misc_error (NULL, "cannot convert to output locale ~s: \"~s\"", | |
1787 | scm_list_2 (scm_from_locale_string (enc), | |
1788 | str)); | |
1789 | } | |
1790 | } | |
9c44cd45 | 1791 | if (lenp) |
4d4528e7 | 1792 | *lenp = len; |
9c44cd45 MG |
1793 | else |
1794 | { | |
1795 | buf = scm_realloc (buf, len + 1); | |
1796 | buf[len] = '\0'; | |
1797 | } | |
24933780 | 1798 | |
c829a427 | 1799 | scm_remember_upto_here_1 (str); |
9c44cd45 | 1800 | return buf; |
4d4528e7 | 1801 | } |
af68e5e5 | 1802 | |
c829a427 MV |
1803 | char * |
1804 | scm_to_locale_string (SCM str) | |
1805 | { | |
1806 | return scm_to_locale_stringn (str, NULL); | |
1807 | } | |
af68e5e5 | 1808 | |
587a3355 MG |
1809 | scm_t_uint8 * |
1810 | scm_i_to_utf8_string (SCM str) | |
1811 | { | |
1812 | char *u8str; | |
1813 | u8str = scm_to_stringn (str, NULL, "UTF-8", SCM_FAILED_CONVERSION_ERROR); | |
1814 | return (scm_t_uint8 *) u8str; | |
1815 | } | |
1816 | ||
c829a427 MV |
1817 | size_t |
1818 | scm_to_locale_stringbuf (SCM str, char *buf, size_t max_len) | |
1819 | { | |
1820 | size_t len; | |
9c44cd45 | 1821 | char *result = NULL; |
3ee86942 | 1822 | if (!scm_is_string (str)) |
c829a427 | 1823 | scm_wrong_type_arg_msg (NULL, 0, str, "string"); |
9c44cd45 MG |
1824 | result = scm_to_locale_stringn (str, &len); |
1825 | ||
1826 | memcpy (buf, result, (len > max_len) ? max_len : len); | |
1827 | free (result); | |
1828 | ||
c829a427 MV |
1829 | scm_remember_upto_here_1 (str); |
1830 | return len; | |
1831 | } | |
af68e5e5 | 1832 | |
3ee86942 MV |
1833 | /* converts C scm_array of strings to SCM scm_list of strings. */ |
1834 | /* If argc < 0, a null terminated scm_array is assumed. */ | |
9c44cd45 | 1835 | SCM |
3ee86942 MV |
1836 | scm_makfromstrs (int argc, char **argv) |
1837 | { | |
1838 | int i = argc; | |
1839 | SCM lst = SCM_EOL; | |
1840 | if (0 > i) | |
1841 | for (i = 0; argv[i]; i++); | |
1842 | while (i--) | |
1843 | lst = scm_cons (scm_from_locale_string (argv[i]), lst); | |
1844 | return lst; | |
1845 | } | |
1846 | ||
c829a427 MV |
1847 | /* Return a newly allocated array of char pointers to each of the strings |
1848 | in args, with a terminating NULL pointer. */ | |
1849 | ||
1850 | char ** | |
1851 | scm_i_allocate_string_pointers (SCM list) | |
af68e5e5 | 1852 | { |
c829a427 MV |
1853 | char **result; |
1854 | int len = scm_ilength (list); | |
1855 | int i; | |
1856 | ||
1857 | if (len < 0) | |
1858 | scm_wrong_type_arg_msg (NULL, 0, list, "proper list"); | |
1859 | ||
661ae7ab | 1860 | scm_dynwind_begin (0); |
c829a427 MV |
1861 | |
1862 | result = (char **) scm_malloc ((len + 1) * sizeof (char *)); | |
1863 | result[len] = NULL; | |
661ae7ab | 1864 | scm_dynwind_unwind_handler (free, result, 0); |
c829a427 MV |
1865 | |
1866 | /* The list might be have been modified in another thread, so | |
1867 | we check LIST before each access. | |
1868 | */ | |
d2e53ed6 | 1869 | for (i = 0; i < len && scm_is_pair (list); i++) |
c829a427 MV |
1870 | { |
1871 | result[i] = scm_to_locale_string (SCM_CAR (list)); | |
1872 | list = SCM_CDR (list); | |
1873 | } | |
1874 | ||
661ae7ab | 1875 | scm_dynwind_end (); |
c829a427 | 1876 | return result; |
af68e5e5 | 1877 | } |
e53cc817 | 1878 | |
c829a427 MV |
1879 | void |
1880 | scm_i_free_string_pointers (char **pointers) | |
1881 | { | |
1882 | int i; | |
1883 | ||
1884 | for (i = 0; pointers[i]; i++) | |
1885 | free (pointers[i]); | |
1886 | free (pointers); | |
1887 | } | |
24933780 | 1888 | |
6f14f578 MV |
1889 | void |
1890 | scm_i_get_substring_spec (size_t len, | |
1891 | SCM start, size_t *cstart, | |
1892 | SCM end, size_t *cend) | |
1893 | { | |
1894 | if (SCM_UNBNDP (start)) | |
1895 | *cstart = 0; | |
1896 | else | |
1897 | *cstart = scm_to_unsigned_integer (start, 0, len); | |
1898 | ||
1899 | if (SCM_UNBNDP (end)) | |
1900 | *cend = len; | |
1901 | else | |
1902 | *cend = scm_to_unsigned_integer (end, *cstart, len); | |
1903 | } | |
1904 | ||
3ee86942 MV |
1905 | #if SCM_ENABLE_DEPRECATED |
1906 | ||
556d75db MV |
1907 | /* When these definitions are removed, it becomes reasonable to use |
1908 | read-only strings for string literals. For that, change the reader | |
1909 | to create string literals with scm_c_substring_read_only instead of | |
1910 | with scm_c_substring_copy. | |
1911 | */ | |
1912 | ||
3ee86942 | 1913 | int |
fe78c51a | 1914 | scm_i_deprecated_stringp (SCM str) |
3ee86942 MV |
1915 | { |
1916 | scm_c_issue_deprecation_warning | |
1917 | ("SCM_STRINGP is deprecated. Use scm_is_string instead."); | |
1918 | ||
2616f0e0 | 1919 | return scm_is_string (str); |
3ee86942 MV |
1920 | } |
1921 | ||
1922 | char * | |
fe78c51a | 1923 | scm_i_deprecated_string_chars (SCM str) |
3ee86942 MV |
1924 | { |
1925 | char *chars; | |
1926 | ||
1927 | scm_c_issue_deprecation_warning | |
1928 | ("SCM_STRING_CHARS is deprecated. See the manual for alternatives."); | |
1929 | ||
2616f0e0 MV |
1930 | /* We don't accept shared substrings here since they are not |
1931 | null-terminated. | |
1932 | */ | |
1933 | if (IS_SH_STRING (str)) | |
1934 | scm_misc_error (NULL, | |
1935 | "SCM_STRING_CHARS does not work with shared substrings.", | |
1936 | SCM_EOL); | |
1937 | ||
877f06c3 | 1938 | /* We explicitly test for read-only strings to produce a better |
556d75db MV |
1939 | error message. |
1940 | */ | |
1941 | ||
1942 | if (IS_RO_STRING (str)) | |
1943 | scm_misc_error (NULL, | |
1944 | "SCM_STRING_CHARS does not work with read-only strings.", | |
1945 | SCM_EOL); | |
1946 | ||
2616f0e0 | 1947 | /* The following is still wrong, of course... |
3ee86942 | 1948 | */ |
9c44cd45 | 1949 | str = scm_i_string_start_writing (str); |
3ee86942 MV |
1950 | chars = scm_i_string_writable_chars (str); |
1951 | scm_i_string_stop_writing (); | |
1952 | return chars; | |
1953 | } | |
1954 | ||
1955 | size_t | |
fe78c51a | 1956 | scm_i_deprecated_string_length (SCM str) |
3ee86942 MV |
1957 | { |
1958 | scm_c_issue_deprecation_warning | |
1959 | ("SCM_STRING_LENGTH is deprecated. Use scm_c_string_length instead."); | |
1960 | return scm_c_string_length (str); | |
1961 | } | |
1962 | ||
1963 | #endif | |
1964 | ||
0f2d19dd JB |
1965 | void |
1966 | scm_init_strings () | |
0f2d19dd | 1967 | { |
3ee86942 | 1968 | scm_nullstr = scm_i_make_string (0, NULL); |
7c33806a | 1969 | |
a0599745 | 1970 | #include "libguile/strings.x" |
0f2d19dd JB |
1971 | } |
1972 | ||
89e00824 ML |
1973 | |
1974 | /* | |
1975 | Local Variables: | |
1976 | c-file-style: "gnu" | |
1977 | End: | |
1978 | */ |