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80dee77b | 1 | /* Copyright (C) 1995,1996,1997,1998,1999,2000,2001 Free Software Foundation, Inc. |
ee2a8b9b JB |
2 | * This program is free software; you can redistribute it and/or modify |
3 | * it under the terms of the GNU General Public License as published by | |
4 | * the Free Software Foundation; either version 2, or (at your option) | |
5 | * any later version. | |
6 | * | |
7 | * This program is distributed in the hope that it will be useful, | |
8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
10 | * GNU General Public License for more details. | |
11 | * | |
12 | * You should have received a copy of the GNU General Public License | |
13 | * along with this software; see the file COPYING. If not, write to | |
82892bed JB |
14 | * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, |
15 | * Boston, MA 02111-1307 USA | |
ee2a8b9b JB |
16 | * |
17 | * As a special exception, the Free Software Foundation gives permission | |
18 | * for additional uses of the text contained in its release of GUILE. | |
19 | * | |
20 | * The exception is that, if you link the GUILE library with other files | |
21 | * to produce an executable, this does not by itself cause the | |
22 | * resulting executable to be covered by the GNU General Public License. | |
23 | * Your use of that executable is in no way restricted on account of | |
24 | * linking the GUILE library code into it. | |
25 | * | |
26 | * This exception does not however invalidate any other reasons why | |
27 | * the executable file might be covered by the GNU General Public License. | |
28 | * | |
29 | * This exception applies only to the code released by the | |
30 | * Free Software Foundation under the name GUILE. If you copy | |
31 | * code from other Free Software Foundation releases into a copy of | |
32 | * GUILE, as the General Public License permits, the exception does | |
33 | * not apply to the code that you add in this way. To avoid misleading | |
34 | * anyone as to the status of such modified files, you must delete | |
35 | * this exception notice from them. | |
36 | * | |
37 | * If you write modifications of your own for GUILE, it is your choice | |
38 | * whether to permit this exception to apply to your modifications. | |
82892bed | 39 | * If you do not wish that, delete this exception notice. */ |
ee2a8b9b JB |
40 | \f |
41 | ||
42 | /* data initialization and C<->Scheme data conversion */ | |
43 | ||
a0599745 | 44 | #include "libguile/gh.h" |
bd9e24b3 GH |
45 | #ifdef HAVE_STRING_H |
46 | #include <string.h> | |
47 | #endif | |
ee2a8b9b JB |
48 | |
49 | /* data conversion C->scheme */ | |
bcee10dd DH |
50 | |
51 | #if (SCM_DEBUG_DEPRECATED == 0) | |
52 | ||
ee2a8b9b | 53 | SCM |
dbb3005d MG |
54 | gh_int2scmb (int x) /* this is being phased out */ |
55 | { | |
156dcb09 | 56 | return SCM_BOOL(x); |
dbb3005d | 57 | } |
bcee10dd DH |
58 | |
59 | #endif /* SCM_DEBUG_DEPRECATED == 0 */ | |
60 | ||
dbb3005d MG |
61 | SCM |
62 | gh_bool2scm (int x) | |
ee2a8b9b | 63 | { |
156dcb09 | 64 | return SCM_BOOL(x); |
ee2a8b9b JB |
65 | } |
66 | SCM | |
67 | gh_int2scm (int x) | |
68 | { | |
69 | return scm_long2num ((long) x); | |
70 | } | |
71 | SCM | |
72 | gh_ulong2scm (unsigned long x) | |
73 | { | |
74 | return scm_ulong2num (x); | |
75 | } | |
76 | SCM | |
77 | gh_long2scm (long x) | |
78 | { | |
79 | return scm_long2num (x); | |
80 | } | |
81 | SCM | |
82 | gh_double2scm (double x) | |
83 | { | |
f8de44c1 | 84 | return scm_make_real (x); |
ee2a8b9b JB |
85 | } |
86 | SCM | |
87 | gh_char2scm (char c) | |
88 | { | |
7866a09b | 89 | return SCM_MAKE_CHAR (c); |
ee2a8b9b JB |
90 | } |
91 | SCM | |
70d63753 | 92 | gh_str2scm (const char *s, int len) |
ee2a8b9b JB |
93 | { |
94 | return scm_makfromstr (s, len, 0); | |
95 | } | |
96 | SCM | |
6e706938 | 97 | gh_str02scm (const char *s) |
ee2a8b9b JB |
98 | { |
99 | return scm_makfrom0str (s); | |
100 | } | |
101 | /* Copy LEN characters at SRC into the *existing* Scheme string DST, | |
102 | starting at START. START is an index into DST; zero means the | |
103 | beginning of the string. | |
104 | ||
105 | If START + LEN is off the end of DST, signal an out-of-range | |
106 | error. */ | |
107 | void | |
108 | gh_set_substr (char *src, SCM dst, int start, int len) | |
109 | { | |
2c92112b | 110 | char *dst_ptr; |
fd88bd7c JB |
111 | unsigned long dst_len; |
112 | unsigned long effective_length; | |
ee2a8b9b | 113 | |
b24b5e13 | 114 | SCM_ASSERT (SCM_STRINGP (dst), dst, SCM_ARG3, "gh_set_substr"); |
fd88bd7c | 115 | |
86c991c2 | 116 | dst_ptr = SCM_STRING_CHARS (dst); |
9fd38a3d | 117 | dst_len = SCM_STRING_LENGTH (dst); |
fd88bd7c JB |
118 | SCM_ASSERT (len >= 0 && (unsigned) len <= dst_len, |
119 | dst, SCM_ARG4, "gh_set_substr"); | |
120 | ||
fd88bd7c JB |
121 | effective_length = ((unsigned) len < dst_len) ? len : dst_len; |
122 | memmove (dst_ptr + start, src, effective_length); | |
5d2b97cd | 123 | scm_remember_upto_here_1 (dst); |
ee2a8b9b JB |
124 | } |
125 | ||
126 | /* Return the symbol named SYMBOL_STR. */ | |
127 | SCM | |
4921140c | 128 | gh_symbol2scm (const char *symbol_str) |
ee2a8b9b | 129 | { |
38ae064c | 130 | return scm_str2symbol(symbol_str); |
ee2a8b9b JB |
131 | } |
132 | ||
b774ee1f | 133 | SCM |
80dee77b | 134 | gh_ints2scm (const int *d, int n) |
b774ee1f | 135 | { |
b774ee1f | 136 | int i; |
00ffa0e7 | 137 | SCM v = scm_c_make_vector (n, SCM_UNSPECIFIED); |
0acef67a JB |
138 | SCM *velts = SCM_VELTS(v); |
139 | ||
b774ee1f | 140 | for (i = 0; i < n; ++i) |
8f379a8f DH |
141 | velts[i] = (SCM_FIXABLE (d[i]) ? SCM_MAKINUM (d[i]) : scm_long2big (d[i])); |
142 | ||
0acef67a | 143 | return v; |
3ffc7a36 MD |
144 | } |
145 | ||
146 | SCM | |
bcee10dd | 147 | gh_doubles2scm (const double *d, int n) |
3ffc7a36 | 148 | { |
3ffc7a36 | 149 | int i; |
00ffa0e7 | 150 | SCM v = scm_c_make_vector (n, SCM_UNSPECIFIED); |
0acef67a JB |
151 | SCM *velts = SCM_VELTS(v); |
152 | ||
153 | for(i = 0; i < n; i++) | |
f8de44c1 | 154 | velts[i] = scm_make_real (d[i]); |
0acef67a JB |
155 | return v; |
156 | } | |
157 | ||
afe5177e | 158 | #ifdef HAVE_ARRAYS |
0acef67a JB |
159 | /* Do not use this function for building normal Scheme vectors, unless |
160 | you arrange for the elements to be protected from GC while you | |
161 | initialize the vector. */ | |
162 | static SCM | |
163 | makvect (char* m, int len, int type) | |
164 | { | |
165 | SCM ans; | |
166 | SCM_NEWCELL (ans); | |
167 | SCM_DEFER_INTS; | |
6a0476fd | 168 | SCM_SET_UVECTOR_BASE (ans, m); |
93778877 | 169 | SCM_SET_UVECTOR_LENGTH (ans, len, type); |
0acef67a JB |
170 | SCM_ALLOW_INTS; |
171 | return ans; | |
b774ee1f MD |
172 | } |
173 | ||
3ffc7a36 | 174 | SCM |
bcee10dd | 175 | gh_chars2byvect (const char *d, int n) |
3ffc7a36 MD |
176 | { |
177 | char *m = scm_must_malloc (n * sizeof (char), "vector"); | |
178 | memcpy (m, d, n * sizeof (char)); | |
179 | return makvect (m, n, scm_tc7_byvect); | |
180 | } | |
181 | ||
182 | SCM | |
bcee10dd | 183 | gh_shorts2svect (const short *d, int n) |
3ffc7a36 MD |
184 | { |
185 | char *m = scm_must_malloc (n * sizeof (short), "vector"); | |
186 | memcpy (m, d, n * sizeof (short)); | |
187 | return makvect (m, n, scm_tc7_svect); | |
188 | } | |
189 | ||
b774ee1f | 190 | SCM |
bcee10dd | 191 | gh_longs2ivect (const long *d, int n) |
b774ee1f MD |
192 | { |
193 | char *m = scm_must_malloc (n * sizeof (long), "vector"); | |
194 | memcpy (m, d, n * sizeof (long)); | |
195 | return makvect (m, n, scm_tc7_ivect); | |
196 | } | |
197 | ||
198 | SCM | |
bcee10dd | 199 | gh_ulongs2uvect (const unsigned long *d, int n) |
b774ee1f MD |
200 | { |
201 | char *m = scm_must_malloc (n * sizeof (unsigned long), "vector"); | |
202 | memcpy (m, d, n * sizeof (unsigned long)); | |
203 | return makvect (m, n, scm_tc7_uvect); | |
204 | } | |
205 | ||
206 | SCM | |
bcee10dd | 207 | gh_floats2fvect (const float *d, int n) |
b774ee1f | 208 | { |
3ffc7a36 MD |
209 | char *m = scm_must_malloc (n * sizeof (float), "vector"); |
210 | memcpy (m, d, n * sizeof (float)); | |
211 | return makvect (m, n, scm_tc7_fvect); | |
b774ee1f MD |
212 | } |
213 | ||
f3a2c4cf | 214 | SCM |
bcee10dd | 215 | gh_doubles2dvect (const double *d, int n) |
f3a2c4cf | 216 | { |
f3a2c4cf MD |
217 | char *m = scm_must_malloc (n * sizeof (double), "vector"); |
218 | memcpy (m, d, n * sizeof (double)); | |
b774ee1f | 219 | return makvect (m, n, scm_tc7_dvect); |
f3a2c4cf MD |
220 | } |
221 | #endif | |
ee2a8b9b JB |
222 | |
223 | /* data conversion scheme->C */ | |
224 | int | |
225 | gh_scm2bool (SCM obj) | |
226 | { | |
fbd485ba | 227 | return (SCM_FALSEP (obj)) ? 0 : 1; |
ee2a8b9b JB |
228 | } |
229 | unsigned long | |
230 | gh_scm2ulong (SCM obj) | |
231 | { | |
e4b265d8 | 232 | return scm_num2ulong (obj, SCM_ARG1, "gh_scm2ulong"); |
ee2a8b9b JB |
233 | } |
234 | long | |
235 | gh_scm2long (SCM obj) | |
236 | { | |
e4b265d8 | 237 | return scm_num2long (obj, SCM_ARG1, "gh_scm2long"); |
ee2a8b9b JB |
238 | } |
239 | int | |
240 | gh_scm2int (SCM obj) | |
241 | { | |
242 | /* NOTE: possible loss of precision here */ | |
e4b265d8 | 243 | return (int) scm_num2long (obj, SCM_ARG1, "gh_scm2int"); |
ee2a8b9b JB |
244 | } |
245 | double | |
246 | gh_scm2double (SCM obj) | |
247 | { | |
248 | return scm_num2dbl (obj, "gh_scm2double"); | |
249 | } | |
250 | char | |
251 | gh_scm2char (SCM obj) | |
0e1d5b0a | 252 | #define FUNC_NAME "gh_scm2char" |
ee2a8b9b | 253 | { |
0e1d5b0a | 254 | SCM_VALIDATE_CHAR (SCM_ARG1, obj); |
7866a09b | 255 | return SCM_CHAR (obj); |
ee2a8b9b | 256 | } |
fd336365 | 257 | #undef FUNC_NAME |
ee2a8b9b | 258 | |
3ffc7a36 MD |
259 | /* Convert a vector, weak vector, string, substring or uniform vector |
260 | into an array of chars. If result array in arg 2 is NULL, malloc a | |
d3dd80ab | 261 | new one. If out of memory, return NULL. */ |
3ffc7a36 MD |
262 | char * |
263 | gh_scm2chars (SCM obj, char *m) | |
f3a2c4cf MD |
264 | { |
265 | int i, n; | |
3ffc7a36 | 266 | long v; |
f3a2c4cf | 267 | SCM val; |
1a548472 | 268 | if (SCM_IMP (obj)) |
f3a2c4cf MD |
269 | scm_wrong_type_arg (0, 0, obj); |
270 | switch (SCM_TYP7 (obj)) | |
271 | { | |
272 | case scm_tc7_vector: | |
273 | case scm_tc7_wvect: | |
9fd38a3d | 274 | n = SCM_VECTOR_LENGTH (obj); |
f3a2c4cf MD |
275 | for (i = 0; i < n; ++i) |
276 | { | |
277 | val = SCM_VELTS (obj)[i]; | |
278 | if (SCM_INUMP (val)) | |
3ffc7a36 MD |
279 | { |
280 | v = SCM_INUM (val); | |
281 | if (v < -128 || v > 255) | |
282 | scm_out_of_range (0, obj); | |
283 | } | |
f3a2c4cf | 284 | else |
3ffc7a36 MD |
285 | scm_wrong_type_arg (0, 0, obj); |
286 | } | |
287 | if (m == 0) | |
288 | m = (char *) malloc (n * sizeof (char)); | |
d3dd80ab MG |
289 | if (m == NULL) |
290 | return NULL; | |
3ffc7a36 MD |
291 | for (i = 0; i < n; ++i) |
292 | m[i] = SCM_INUM (SCM_VELTS (obj)[i]); | |
293 | break; | |
afe5177e | 294 | #ifdef HAVE_ARRAYS |
3ffc7a36 | 295 | case scm_tc7_byvect: |
b5c2579a DH |
296 | n = SCM_UVECTOR_LENGTH (obj); |
297 | if (m == 0) | |
298 | m = (char *) malloc (n * sizeof (char)); | |
d3dd80ab MG |
299 | if (m == NULL) |
300 | return NULL; | |
b5c2579a DH |
301 | memcpy (m, SCM_VELTS (obj), n * sizeof (char)); |
302 | break; | |
afe5177e | 303 | #endif |
3ffc7a36 MD |
304 | case scm_tc7_string: |
305 | case scm_tc7_substring: | |
b5c2579a | 306 | n = SCM_STRING_LENGTH (obj); |
3ffc7a36 MD |
307 | if (m == 0) |
308 | m = (char *) malloc (n * sizeof (char)); | |
d3dd80ab MG |
309 | if (m == NULL) |
310 | return NULL; | |
3ffc7a36 MD |
311 | memcpy (m, SCM_VELTS (obj), n * sizeof (char)); |
312 | break; | |
313 | default: | |
314 | scm_wrong_type_arg (0, 0, obj); | |
315 | } | |
316 | return m; | |
317 | } | |
318 | ||
319 | /* Convert a vector, weak vector or uniform vector into an array of | |
d3dd80ab MG |
320 | shorts. If result array in arg 2 is NULL, malloc a new one. If |
321 | out of memory, return NULL. */ | |
3ffc7a36 MD |
322 | short * |
323 | gh_scm2shorts (SCM obj, short *m) | |
324 | { | |
325 | int i, n; | |
326 | long v; | |
327 | SCM val; | |
1a548472 | 328 | if (SCM_IMP (obj)) |
3ffc7a36 MD |
329 | scm_wrong_type_arg (0, 0, obj); |
330 | switch (SCM_TYP7 (obj)) | |
331 | { | |
332 | case scm_tc7_vector: | |
333 | case scm_tc7_wvect: | |
9fd38a3d | 334 | n = SCM_VECTOR_LENGTH (obj); |
3ffc7a36 MD |
335 | for (i = 0; i < n; ++i) |
336 | { | |
337 | val = SCM_VELTS (obj)[i]; | |
338 | if (SCM_INUMP (val)) | |
f3a2c4cf | 339 | { |
3ffc7a36 MD |
340 | v = SCM_INUM (val); |
341 | if (v < -32768 || v > 65535) | |
342 | scm_out_of_range (0, obj); | |
f3a2c4cf | 343 | } |
3ffc7a36 MD |
344 | else |
345 | scm_wrong_type_arg (0, 0, obj); | |
346 | } | |
347 | if (m == 0) | |
348 | m = (short *) malloc (n * sizeof (short)); | |
d3dd80ab MG |
349 | if (m == NULL) |
350 | return NULL; | |
3ffc7a36 MD |
351 | for (i = 0; i < n; ++i) |
352 | m[i] = SCM_INUM (SCM_VELTS (obj)[i]); | |
353 | break; | |
afe5177e | 354 | #ifdef HAVE_ARRAYS |
3ffc7a36 | 355 | case scm_tc7_svect: |
9fd38a3d | 356 | n = SCM_UVECTOR_LENGTH (obj); |
3ffc7a36 MD |
357 | if (m == 0) |
358 | m = (short *) malloc (n * sizeof (short)); | |
d3dd80ab MG |
359 | if (m == NULL) |
360 | return NULL; | |
3ffc7a36 MD |
361 | memcpy (m, SCM_VELTS (obj), n * sizeof (short)); |
362 | break; | |
afe5177e | 363 | #endif |
3ffc7a36 MD |
364 | default: |
365 | scm_wrong_type_arg (0, 0, obj); | |
366 | } | |
367 | return m; | |
368 | } | |
369 | ||
370 | /* Convert a vector, weak vector or uniform vector into an array of | |
d3dd80ab MG |
371 | longs. If result array in arg 2 is NULL, malloc a new one. If out |
372 | of memory, return NULL. */ | |
3ffc7a36 MD |
373 | long * |
374 | gh_scm2longs (SCM obj, long *m) | |
375 | { | |
376 | int i, n; | |
377 | SCM val; | |
1a548472 | 378 | if (SCM_IMP (obj)) |
3ffc7a36 MD |
379 | scm_wrong_type_arg (0, 0, obj); |
380 | switch (SCM_TYP7 (obj)) | |
381 | { | |
382 | case scm_tc7_vector: | |
383 | case scm_tc7_wvect: | |
9fd38a3d | 384 | n = SCM_VECTOR_LENGTH (obj); |
3ffc7a36 MD |
385 | for (i = 0; i < n; ++i) |
386 | { | |
387 | val = SCM_VELTS (obj)[i]; | |
0c95b57d | 388 | if (!SCM_INUMP (val) && !SCM_BIGP (val)) |
3ffc7a36 MD |
389 | scm_wrong_type_arg (0, 0, obj); |
390 | } | |
391 | if (m == 0) | |
392 | m = (long *) malloc (n * sizeof (long)); | |
d3dd80ab MG |
393 | if (m == NULL) |
394 | return NULL; | |
3ffc7a36 MD |
395 | for (i = 0; i < n; ++i) |
396 | { | |
397 | val = SCM_VELTS (obj)[i]; | |
e4b265d8 DH |
398 | m[i] = SCM_INUMP (val) |
399 | ? SCM_INUM (val) | |
400 | : scm_num2long (val, 0, NULL); | |
3ffc7a36 MD |
401 | } |
402 | break; | |
afe5177e | 403 | #ifdef HAVE_ARRAYS |
3ffc7a36 MD |
404 | case scm_tc7_ivect: |
405 | case scm_tc7_uvect: | |
9fd38a3d | 406 | n = SCM_UVECTOR_LENGTH (obj); |
3ffc7a36 MD |
407 | if (m == 0) |
408 | m = (long *) malloc (n * sizeof (long)); | |
d3dd80ab MG |
409 | if (m == NULL) |
410 | return NULL; | |
3ffc7a36 MD |
411 | memcpy (m, SCM_VELTS (obj), n * sizeof (long)); |
412 | break; | |
afe5177e | 413 | #endif |
3ffc7a36 MD |
414 | default: |
415 | scm_wrong_type_arg (0, 0, obj); | |
416 | } | |
417 | return m; | |
418 | } | |
419 | ||
420 | /* Convert a vector, weak vector or uniform vector into an array of | |
d3dd80ab MG |
421 | floats. If result array in arg 2 is NULL, malloc a new one. If |
422 | out of memory, return NULL. */ | |
3ffc7a36 MD |
423 | float * |
424 | gh_scm2floats (SCM obj, float *m) | |
425 | { | |
426 | int i, n; | |
427 | SCM val; | |
1a548472 | 428 | if (SCM_IMP (obj)) |
3ffc7a36 MD |
429 | scm_wrong_type_arg (0, 0, obj); |
430 | switch (SCM_TYP7 (obj)) | |
431 | { | |
432 | case scm_tc7_vector: | |
433 | case scm_tc7_wvect: | |
9fd38a3d | 434 | n = SCM_VECTOR_LENGTH (obj); |
3ffc7a36 MD |
435 | for (i = 0; i < n; ++i) |
436 | { | |
437 | val = SCM_VELTS (obj)[i]; | |
438 | if (!SCM_INUMP (val) | |
0c95b57d | 439 | && !(SCM_BIGP (val) || SCM_REALP (val))) |
3ffc7a36 MD |
440 | scm_wrong_type_arg (0, 0, val); |
441 | } | |
442 | if (m == 0) | |
443 | m = (float *) malloc (n * sizeof (float)); | |
d3dd80ab MG |
444 | if (m == NULL) |
445 | return NULL; | |
3ffc7a36 MD |
446 | for (i = 0; i < n; ++i) |
447 | { | |
448 | val = SCM_VELTS (obj)[i]; | |
449 | if (SCM_INUMP (val)) | |
450 | m[i] = SCM_INUM (val); | |
451 | else if (SCM_BIGP (val)) | |
e4b265d8 | 452 | m[i] = scm_num2long (val, 0, NULL); |
3ffc7a36 | 453 | else |
eb42e2f0 | 454 | m[i] = SCM_REAL_VALUE (val); |
f3a2c4cf MD |
455 | } |
456 | break; | |
afe5177e | 457 | #ifdef HAVE_ARRAYS |
f3a2c4cf | 458 | case scm_tc7_fvect: |
9fd38a3d | 459 | n = SCM_UVECTOR_LENGTH (obj); |
3ffc7a36 MD |
460 | if (m == 0) |
461 | m = (float *) malloc (n * sizeof (float)); | |
d3dd80ab MG |
462 | if (m == NULL) |
463 | return NULL; | |
3ffc7a36 | 464 | memcpy (m, (float *) SCM_VELTS (obj), n * sizeof (float)); |
f3a2c4cf | 465 | break; |
16d35552 | 466 | |
f3a2c4cf | 467 | case scm_tc7_dvect: |
9fd38a3d | 468 | n = SCM_UVECTOR_LENGTH (obj); |
3ffc7a36 MD |
469 | if (m == 0) |
470 | m = (float*) malloc (n * sizeof (float)); | |
d3dd80ab MG |
471 | if (m == NULL) |
472 | return NULL; | |
f3a2c4cf | 473 | for (i = 0; i < n; ++i) |
3ffc7a36 MD |
474 | m[i] = ((double *) SCM_VELTS (obj))[i]; |
475 | break; | |
476 | #endif | |
477 | default: | |
478 | scm_wrong_type_arg (0, 0, obj); | |
479 | } | |
480 | return m; | |
481 | } | |
482 | ||
483 | /* Convert a vector, weak vector or uniform vector into an array of | |
d3dd80ab MG |
484 | doubles. If result array in arg 2 is NULL, malloc a new one. If |
485 | out of memory, return NULL. */ | |
3ffc7a36 MD |
486 | double * |
487 | gh_scm2doubles (SCM obj, double *m) | |
488 | { | |
489 | int i, n; | |
490 | SCM val; | |
1a548472 | 491 | if (SCM_IMP (obj)) |
3ffc7a36 MD |
492 | scm_wrong_type_arg (0, 0, obj); |
493 | switch (SCM_TYP7 (obj)) | |
494 | { | |
495 | case scm_tc7_vector: | |
496 | case scm_tc7_wvect: | |
9fd38a3d | 497 | n = SCM_VECTOR_LENGTH (obj); |
3ffc7a36 MD |
498 | for (i = 0; i < n; ++i) |
499 | { | |
500 | val = SCM_VELTS (obj)[i]; | |
501 | if (!SCM_INUMP (val) | |
0c95b57d | 502 | && !(SCM_BIGP (val) || SCM_REALP (val))) |
3ffc7a36 MD |
503 | scm_wrong_type_arg (0, 0, val); |
504 | } | |
505 | if (m == 0) | |
506 | m = (double *) malloc (n * sizeof (double)); | |
d3dd80ab MG |
507 | if (m == NULL) |
508 | return NULL; | |
3ffc7a36 MD |
509 | for (i = 0; i < n; ++i) |
510 | { | |
511 | val = SCM_VELTS (obj)[i]; | |
512 | if (SCM_INUMP (val)) | |
513 | m[i] = SCM_INUM (val); | |
514 | else if (SCM_BIGP (val)) | |
e4b265d8 | 515 | m[i] = scm_num2long (val, 0, NULL); |
3ffc7a36 | 516 | else |
eb42e2f0 | 517 | m[i] = SCM_REAL_VALUE (val); |
3ffc7a36 MD |
518 | } |
519 | break; | |
afe5177e | 520 | #ifdef HAVE_ARRAYS |
3ffc7a36 | 521 | case scm_tc7_fvect: |
9fd38a3d | 522 | n = SCM_UVECTOR_LENGTH (obj); |
3ffc7a36 MD |
523 | if (m == 0) |
524 | m = (double *) malloc (n * sizeof (double)); | |
d3dd80ab MG |
525 | if (m == NULL) |
526 | return NULL; | |
3ffc7a36 MD |
527 | for (i = 0; i < n; ++i) |
528 | m[i] = ((float *) SCM_VELTS (obj))[i]; | |
529 | break; | |
16d35552 | 530 | |
3ffc7a36 | 531 | case scm_tc7_dvect: |
9fd38a3d | 532 | n = SCM_UVECTOR_LENGTH (obj); |
3ffc7a36 MD |
533 | if (m == 0) |
534 | m = (double*) malloc (n * sizeof (double)); | |
d3dd80ab MG |
535 | if (m == NULL) |
536 | return NULL; | |
3ffc7a36 | 537 | memcpy (m, SCM_VELTS (obj), n * sizeof (double)); |
f3a2c4cf MD |
538 | break; |
539 | #endif | |
540 | default: | |
541 | scm_wrong_type_arg (0, 0, obj); | |
542 | } | |
543 | return m; | |
544 | } | |
545 | ||
ee2a8b9b JB |
546 | /* string conversions between C and Scheme */ |
547 | ||
548 | /* gh_scm2newstr() -- Given a Scheme string STR, return a pointer to a | |
549 | new copy of its contents, followed by a null byte. If lenp is | |
550 | non-null, set *lenp to the string's length. | |
551 | ||
552 | This function uses malloc to obtain storage for the copy; the | |
d3dd80ab MG |
553 | caller is responsible for freeing it. If out of memory, NULL is |
554 | returned. | |
ee2a8b9b JB |
555 | |
556 | Note that Scheme strings may contain arbitrary data, including null | |
557 | characters. This means that null termination is not a reliable way | |
558 | to determine the length of the returned value. However, the | |
559 | function always copies the complete contents of STR, and sets | |
560 | *LEN_P to the true length of the string (when LEN_P is non-null). */ | |
561 | char * | |
562 | gh_scm2newstr (SCM str, int *lenp) | |
563 | { | |
564 | char *ret_str; | |
565 | int len; | |
566 | ||
9fd38a3d | 567 | SCM_ASSERT (SCM_STRINGP (str), str, SCM_ARG3, "gh_scm2newstr"); |
ee2a8b9b | 568 | |
9fd38a3d | 569 | len = SCM_STRING_LENGTH (str); |
ee2a8b9b | 570 | |
d3dd80ab MG |
571 | ret_str = (char *) malloc ((len + 1) * sizeof (char)); |
572 | if (ret_str == NULL) | |
573 | return NULL; | |
ee2a8b9b | 574 | /* so we copy tmp_str to ret_str, which is what we will allocate */ |
34f0f2b8 | 575 | memcpy (ret_str, SCM_STRING_CHARS (str), len); |
5d2b97cd | 576 | scm_remember_upto_here_1 (str); |
ee2a8b9b JB |
577 | /* now make sure we null-terminate it */ |
578 | ret_str[len] = '\0'; | |
579 | ||
ee2a8b9b JB |
580 | if (lenp != NULL) |
581 | { | |
582 | *lenp = len; | |
583 | } | |
584 | ||
585 | return ret_str; | |
586 | } | |
587 | ||
588 | ||
589 | /* Copy LEN characters at START from the Scheme string SRC to memory | |
590 | at DST. START is an index into SRC; zero means the beginning of | |
591 | the string. DST has already been allocated by the caller. | |
592 | ||
593 | If START + LEN is off the end of SRC, silently truncate the source | |
594 | region to fit the string. If truncation occurs, the corresponding | |
595 | area of DST is left unchanged. */ | |
596 | void | |
597 | gh_get_substr (SCM src, char *dst, int start, int len) | |
598 | { | |
599 | int src_len, effective_length; | |
9fd38a3d | 600 | SCM_ASSERT (SCM_STRINGP (src), src, SCM_ARG3, "gh_get_substr"); |
ee2a8b9b | 601 | |
9fd38a3d | 602 | src_len = SCM_STRING_LENGTH (src); |
ee2a8b9b | 603 | effective_length = (len < src_len) ? len : src_len; |
34f0f2b8 | 604 | memcpy (dst + start, SCM_STRING_CHARS (src), effective_length * sizeof (char)); |
ee2a8b9b | 605 | /* FIXME: must signal an error if len > src_len */ |
5d2b97cd | 606 | scm_remember_upto_here_1 (src); |
ee2a8b9b JB |
607 | } |
608 | ||
609 | ||
610 | /* gh_scm2newsymbol() -- Given a Scheme symbol 'identifier, return a | |
611 | pointer to a string with the symbol characters "identifier", | |
612 | followed by a null byte. If lenp is non-null, set *lenp to the | |
613 | string's length. | |
614 | ||
615 | This function uses malloc to obtain storage for the copy; the | |
d3dd80ab MG |
616 | caller is responsible for freeing it. If out of memory, NULL is |
617 | returned.*/ | |
ee2a8b9b JB |
618 | char * |
619 | gh_symbol2newstr (SCM sym, int *lenp) | |
620 | { | |
621 | char *ret_str; | |
622 | int len; | |
623 | ||
b24b5e13 | 624 | SCM_ASSERT (SCM_SYMBOLP (sym), sym, SCM_ARG3, "gh_scm2newsymbol"); |
ee2a8b9b | 625 | |
9fd38a3d | 626 | len = SCM_SYMBOL_LENGTH (sym); |
ee2a8b9b | 627 | |
d3dd80ab MG |
628 | ret_str = (char *) malloc ((len + 1) * sizeof (char)); |
629 | if (ret_str == NULL) | |
630 | return NULL; | |
b24b5e13 | 631 | /* so we copy sym to ret_str, which is what we will allocate */ |
86c991c2 | 632 | memcpy (ret_str, SCM_SYMBOL_CHARS (sym), len); |
5d2b97cd | 633 | scm_remember_upto_here_1 (sym); |
ee2a8b9b JB |
634 | /* now make sure we null-terminate it */ |
635 | ret_str[len] = '\0'; | |
636 | ||
ee2a8b9b JB |
637 | if (lenp != NULL) |
638 | { | |
639 | *lenp = len; | |
640 | } | |
641 | ||
642 | return ret_str; | |
643 | } | |
644 | ||
645 | ||
646 | /* create a new vector of the given length, all initialized to the | |
647 | given value */ | |
e5eece74 MG |
648 | SCM |
649 | gh_make_vector (SCM len, SCM fill) | |
ee2a8b9b | 650 | { |
a8741caa | 651 | return scm_make_vector (len, fill); |
ee2a8b9b JB |
652 | } |
653 | ||
654 | /* set the given element of the given vector to the given value */ | |
655 | SCM | |
956328d2 | 656 | gh_vector_set_x (SCM vec, SCM pos, SCM val) |
ee2a8b9b JB |
657 | { |
658 | return scm_vector_set_x (vec, pos, val); | |
659 | } | |
660 | ||
661 | /* retrieve the given element of the given vector */ | |
662 | SCM | |
e5eece74 | 663 | gh_vector_ref (SCM vec, SCM pos) |
ee2a8b9b JB |
664 | { |
665 | return scm_vector_ref (vec, pos); | |
666 | } | |
667 | ||
668 | /* returns the length of the given vector */ | |
669 | unsigned long | |
670 | gh_vector_length (SCM v) | |
671 | { | |
672 | return gh_scm2ulong (scm_vector_length (v)); | |
673 | } | |
35379308 | 674 | |
afe5177e | 675 | #ifdef HAVE_ARRAYS |
ef5d3ae1 MG |
676 | /* uniform vector support */ |
677 | ||
678 | /* returns the length as a C unsigned long integer */ | |
679 | unsigned long | |
680 | gh_uniform_vector_length (SCM v) | |
681 | { | |
682 | return gh_scm2ulong (scm_uniform_vector_length (v)); | |
683 | } | |
684 | ||
685 | /* gets the given element from a uniform vector; ilist is a list (or | |
686 | possibly a single integer) of indices, and its length is the | |
687 | dimension of the uniform vector */ | |
688 | SCM | |
689 | gh_uniform_vector_ref (SCM v, SCM ilist) | |
690 | { | |
691 | return scm_uniform_vector_ref (v, ilist); | |
692 | } | |
693 | ||
694 | /* sets an individual element in a uniform vector */ | |
695 | /* SCM */ | |
696 | /* gh_list_to_uniform_array ( */ | |
afe5177e | 697 | #endif |
ef5d3ae1 | 698 | |
35379308 JB |
699 | /* Data lookups between C and Scheme |
700 | ||
701 | Look up a symbol with a given name, and return the object to which | |
702 | it is bound. gh_lookup examines the Guile top level, and | |
703 | gh_module_lookup checks the module namespace specified by the | |
704 | `vec' argument. | |
705 | ||
706 | The return value is the Scheme object to which SNAME is bound, or | |
07de6c47 MV |
707 | SCM_UNDEFINED if SNAME is not bound in the given context. |
708 | */ | |
35379308 JB |
709 | |
710 | SCM | |
bcee10dd | 711 | gh_lookup (const char *sname) |
35379308 JB |
712 | { |
713 | return gh_module_lookup (SCM_BOOL_F, sname); | |
714 | } | |
715 | ||
716 | SCM | |
bcee10dd | 717 | gh_module_lookup (SCM vec, const char *sname) |
35379308 JB |
718 | { |
719 | SCM sym = gh_symbol2scm (sname); | |
9a09deb1 | 720 | if (SCM_EQ_P (scm_symbol_bound_p (vec, sym), SCM_BOOL_T)) |
35379308 JB |
721 | return scm_symbol_binding (vec, sym); |
722 | else | |
723 | return SCM_UNDEFINED; | |
724 | } | |
89e00824 ML |
725 | |
726 | /* | |
727 | Local Variables: | |
728 | c-file-style: "gnu" | |
729 | End: | |
730 | */ |