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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 | 50 | |
dbb3005d MG |
51 | SCM |
52 | gh_bool2scm (int x) | |
ee2a8b9b | 53 | { |
156dcb09 | 54 | return SCM_BOOL(x); |
ee2a8b9b JB |
55 | } |
56 | SCM | |
57 | gh_int2scm (int x) | |
58 | { | |
59 | return scm_long2num ((long) x); | |
60 | } | |
61 | SCM | |
62 | gh_ulong2scm (unsigned long x) | |
63 | { | |
64 | return scm_ulong2num (x); | |
65 | } | |
66 | SCM | |
67 | gh_long2scm (long x) | |
68 | { | |
69 | return scm_long2num (x); | |
70 | } | |
71 | SCM | |
72 | gh_double2scm (double x) | |
73 | { | |
f8de44c1 | 74 | return scm_make_real (x); |
ee2a8b9b JB |
75 | } |
76 | SCM | |
77 | gh_char2scm (char c) | |
78 | { | |
7866a09b | 79 | return SCM_MAKE_CHAR (c); |
ee2a8b9b JB |
80 | } |
81 | SCM | |
1be6b49c | 82 | gh_str2scm (const char *s, size_t len) |
ee2a8b9b | 83 | { |
36284627 | 84 | return scm_mem2string (s, len); |
ee2a8b9b JB |
85 | } |
86 | SCM | |
6e706938 | 87 | gh_str02scm (const char *s) |
ee2a8b9b JB |
88 | { |
89 | return scm_makfrom0str (s); | |
90 | } | |
91 | /* Copy LEN characters at SRC into the *existing* Scheme string DST, | |
92 | starting at START. START is an index into DST; zero means the | |
93 | beginning of the string. | |
94 | ||
95 | If START + LEN is off the end of DST, signal an out-of-range | |
96 | error. */ | |
97 | void | |
c014a02e | 98 | gh_set_substr (char *src, SCM dst, long start, size_t len) |
ee2a8b9b | 99 | { |
2c92112b | 100 | char *dst_ptr; |
1be6b49c | 101 | size_t dst_len; |
ee2a8b9b | 102 | |
b24b5e13 | 103 | SCM_ASSERT (SCM_STRINGP (dst), dst, SCM_ARG3, "gh_set_substr"); |
fd88bd7c | 104 | |
86c991c2 | 105 | dst_ptr = SCM_STRING_CHARS (dst); |
9fd38a3d | 106 | dst_len = SCM_STRING_LENGTH (dst); |
729dbac3 | 107 | SCM_ASSERT (start + len <= dst_len, dst, SCM_ARG4, "gh_set_substr"); |
fd88bd7c | 108 | |
729dbac3 | 109 | memmove (dst_ptr + start, src, len); |
5d2b97cd | 110 | scm_remember_upto_here_1 (dst); |
ee2a8b9b JB |
111 | } |
112 | ||
113 | /* Return the symbol named SYMBOL_STR. */ | |
114 | SCM | |
4921140c | 115 | gh_symbol2scm (const char *symbol_str) |
ee2a8b9b | 116 | { |
38ae064c | 117 | return scm_str2symbol(symbol_str); |
ee2a8b9b JB |
118 | } |
119 | ||
b774ee1f | 120 | SCM |
c014a02e | 121 | gh_ints2scm (const int *d, long n) |
b774ee1f | 122 | { |
c014a02e | 123 | long i; |
00ffa0e7 | 124 | SCM v = scm_c_make_vector (n, SCM_UNSPECIFIED); |
0acef67a JB |
125 | SCM *velts = SCM_VELTS(v); |
126 | ||
b774ee1f | 127 | for (i = 0; i < n; ++i) |
1be6b49c | 128 | velts[i] = (SCM_FIXABLE (d[i]) ? SCM_MAKINUM (d[i]) : scm_i_long2big (d[i])); |
8f379a8f | 129 | |
0acef67a | 130 | return v; |
3ffc7a36 MD |
131 | } |
132 | ||
133 | SCM | |
c014a02e | 134 | gh_doubles2scm (const double *d, long n) |
3ffc7a36 | 135 | { |
c014a02e | 136 | long i; |
00ffa0e7 | 137 | SCM v = scm_c_make_vector (n, SCM_UNSPECIFIED); |
0acef67a JB |
138 | SCM *velts = SCM_VELTS(v); |
139 | ||
140 | for(i = 0; i < n; i++) | |
f8de44c1 | 141 | velts[i] = scm_make_real (d[i]); |
0acef67a JB |
142 | return v; |
143 | } | |
144 | ||
afe5177e | 145 | #ifdef HAVE_ARRAYS |
0acef67a JB |
146 | /* Do not use this function for building normal Scheme vectors, unless |
147 | you arrange for the elements to be protected from GC while you | |
148 | initialize the vector. */ | |
149 | static SCM | |
1be6b49c | 150 | makvect (char *m, size_t len, int type) |
0acef67a JB |
151 | { |
152 | SCM ans; | |
153 | SCM_NEWCELL (ans); | |
154 | SCM_DEFER_INTS; | |
6a0476fd | 155 | SCM_SET_UVECTOR_BASE (ans, m); |
93778877 | 156 | SCM_SET_UVECTOR_LENGTH (ans, len, type); |
0acef67a JB |
157 | SCM_ALLOW_INTS; |
158 | return ans; | |
b774ee1f MD |
159 | } |
160 | ||
3ffc7a36 | 161 | SCM |
c014a02e | 162 | gh_chars2byvect (const char *d, long n) |
3ffc7a36 MD |
163 | { |
164 | char *m = scm_must_malloc (n * sizeof (char), "vector"); | |
165 | memcpy (m, d, n * sizeof (char)); | |
166 | return makvect (m, n, scm_tc7_byvect); | |
167 | } | |
168 | ||
169 | SCM | |
c014a02e | 170 | gh_shorts2svect (const short *d, long n) |
3ffc7a36 MD |
171 | { |
172 | char *m = scm_must_malloc (n * sizeof (short), "vector"); | |
173 | memcpy (m, d, n * sizeof (short)); | |
174 | return makvect (m, n, scm_tc7_svect); | |
175 | } | |
176 | ||
b774ee1f | 177 | SCM |
c014a02e | 178 | gh_longs2ivect (const long *d, long n) |
b774ee1f MD |
179 | { |
180 | char *m = scm_must_malloc (n * sizeof (long), "vector"); | |
181 | memcpy (m, d, n * sizeof (long)); | |
182 | return makvect (m, n, scm_tc7_ivect); | |
183 | } | |
184 | ||
185 | SCM | |
c014a02e | 186 | gh_ulongs2uvect (const unsigned long *d, long n) |
b774ee1f MD |
187 | { |
188 | char *m = scm_must_malloc (n * sizeof (unsigned long), "vector"); | |
189 | memcpy (m, d, n * sizeof (unsigned long)); | |
190 | return makvect (m, n, scm_tc7_uvect); | |
191 | } | |
192 | ||
193 | SCM | |
c014a02e | 194 | gh_floats2fvect (const float *d, long n) |
b774ee1f | 195 | { |
3ffc7a36 MD |
196 | char *m = scm_must_malloc (n * sizeof (float), "vector"); |
197 | memcpy (m, d, n * sizeof (float)); | |
198 | return makvect (m, n, scm_tc7_fvect); | |
b774ee1f MD |
199 | } |
200 | ||
f3a2c4cf | 201 | SCM |
c014a02e | 202 | gh_doubles2dvect (const double *d, long n) |
f3a2c4cf | 203 | { |
f3a2c4cf MD |
204 | char *m = scm_must_malloc (n * sizeof (double), "vector"); |
205 | memcpy (m, d, n * sizeof (double)); | |
b774ee1f | 206 | return makvect (m, n, scm_tc7_dvect); |
f3a2c4cf MD |
207 | } |
208 | #endif | |
ee2a8b9b JB |
209 | |
210 | /* data conversion scheme->C */ | |
211 | int | |
212 | gh_scm2bool (SCM obj) | |
213 | { | |
fbd485ba | 214 | return (SCM_FALSEP (obj)) ? 0 : 1; |
ee2a8b9b JB |
215 | } |
216 | unsigned long | |
217 | gh_scm2ulong (SCM obj) | |
218 | { | |
e4b265d8 | 219 | return scm_num2ulong (obj, SCM_ARG1, "gh_scm2ulong"); |
ee2a8b9b JB |
220 | } |
221 | long | |
222 | gh_scm2long (SCM obj) | |
223 | { | |
e4b265d8 | 224 | return scm_num2long (obj, SCM_ARG1, "gh_scm2long"); |
ee2a8b9b JB |
225 | } |
226 | int | |
227 | gh_scm2int (SCM obj) | |
228 | { | |
1be6b49c | 229 | return (int) scm_num2int (obj, SCM_ARG1, "gh_scm2int"); |
ee2a8b9b JB |
230 | } |
231 | double | |
232 | gh_scm2double (SCM obj) | |
233 | { | |
234 | return scm_num2dbl (obj, "gh_scm2double"); | |
235 | } | |
236 | char | |
237 | gh_scm2char (SCM obj) | |
0e1d5b0a | 238 | #define FUNC_NAME "gh_scm2char" |
ee2a8b9b | 239 | { |
0e1d5b0a | 240 | SCM_VALIDATE_CHAR (SCM_ARG1, obj); |
7866a09b | 241 | return SCM_CHAR (obj); |
ee2a8b9b | 242 | } |
fd336365 | 243 | #undef FUNC_NAME |
ee2a8b9b | 244 | |
3ffc7a36 MD |
245 | /* Convert a vector, weak vector, string, substring or uniform vector |
246 | into an array of chars. If result array in arg 2 is NULL, malloc a | |
d3dd80ab | 247 | new one. If out of memory, return NULL. */ |
3ffc7a36 MD |
248 | char * |
249 | gh_scm2chars (SCM obj, char *m) | |
f3a2c4cf | 250 | { |
c014a02e ML |
251 | long i, n; |
252 | long v; | |
f3a2c4cf | 253 | SCM val; |
1a548472 | 254 | if (SCM_IMP (obj)) |
f3a2c4cf MD |
255 | scm_wrong_type_arg (0, 0, obj); |
256 | switch (SCM_TYP7 (obj)) | |
257 | { | |
258 | case scm_tc7_vector: | |
259 | case scm_tc7_wvect: | |
9fd38a3d | 260 | n = SCM_VECTOR_LENGTH (obj); |
f3a2c4cf MD |
261 | for (i = 0; i < n; ++i) |
262 | { | |
263 | val = SCM_VELTS (obj)[i]; | |
264 | if (SCM_INUMP (val)) | |
3ffc7a36 MD |
265 | { |
266 | v = SCM_INUM (val); | |
267 | if (v < -128 || v > 255) | |
268 | scm_out_of_range (0, obj); | |
269 | } | |
f3a2c4cf | 270 | else |
3ffc7a36 MD |
271 | scm_wrong_type_arg (0, 0, obj); |
272 | } | |
273 | if (m == 0) | |
274 | m = (char *) malloc (n * sizeof (char)); | |
d3dd80ab MG |
275 | if (m == NULL) |
276 | return NULL; | |
3ffc7a36 MD |
277 | for (i = 0; i < n; ++i) |
278 | m[i] = SCM_INUM (SCM_VELTS (obj)[i]); | |
279 | break; | |
afe5177e | 280 | #ifdef HAVE_ARRAYS |
3ffc7a36 | 281 | case scm_tc7_byvect: |
b5c2579a DH |
282 | n = SCM_UVECTOR_LENGTH (obj); |
283 | if (m == 0) | |
284 | m = (char *) malloc (n * sizeof (char)); | |
d3dd80ab MG |
285 | if (m == NULL) |
286 | return NULL; | |
b5c2579a DH |
287 | memcpy (m, SCM_VELTS (obj), n * sizeof (char)); |
288 | break; | |
afe5177e | 289 | #endif |
3ffc7a36 | 290 | case scm_tc7_string: |
b5c2579a | 291 | n = SCM_STRING_LENGTH (obj); |
3ffc7a36 MD |
292 | if (m == 0) |
293 | m = (char *) malloc (n * sizeof (char)); | |
d3dd80ab MG |
294 | if (m == NULL) |
295 | return NULL; | |
3ffc7a36 MD |
296 | memcpy (m, SCM_VELTS (obj), n * sizeof (char)); |
297 | break; | |
298 | default: | |
299 | scm_wrong_type_arg (0, 0, obj); | |
300 | } | |
301 | return m; | |
302 | } | |
303 | ||
304 | /* Convert a vector, weak vector or uniform vector into an array of | |
d3dd80ab MG |
305 | shorts. If result array in arg 2 is NULL, malloc a new one. If |
306 | out of memory, return NULL. */ | |
3ffc7a36 MD |
307 | short * |
308 | gh_scm2shorts (SCM obj, short *m) | |
309 | { | |
c014a02e ML |
310 | long i, n; |
311 | long v; | |
3ffc7a36 | 312 | SCM val; |
1a548472 | 313 | if (SCM_IMP (obj)) |
3ffc7a36 MD |
314 | scm_wrong_type_arg (0, 0, obj); |
315 | switch (SCM_TYP7 (obj)) | |
316 | { | |
317 | case scm_tc7_vector: | |
318 | case scm_tc7_wvect: | |
9fd38a3d | 319 | n = SCM_VECTOR_LENGTH (obj); |
3ffc7a36 MD |
320 | for (i = 0; i < n; ++i) |
321 | { | |
322 | val = SCM_VELTS (obj)[i]; | |
323 | if (SCM_INUMP (val)) | |
f3a2c4cf | 324 | { |
3ffc7a36 MD |
325 | v = SCM_INUM (val); |
326 | if (v < -32768 || v > 65535) | |
327 | scm_out_of_range (0, obj); | |
f3a2c4cf | 328 | } |
3ffc7a36 MD |
329 | else |
330 | scm_wrong_type_arg (0, 0, obj); | |
331 | } | |
332 | if (m == 0) | |
333 | m = (short *) malloc (n * sizeof (short)); | |
d3dd80ab MG |
334 | if (m == NULL) |
335 | return NULL; | |
3ffc7a36 MD |
336 | for (i = 0; i < n; ++i) |
337 | m[i] = SCM_INUM (SCM_VELTS (obj)[i]); | |
338 | break; | |
afe5177e | 339 | #ifdef HAVE_ARRAYS |
3ffc7a36 | 340 | case scm_tc7_svect: |
9fd38a3d | 341 | n = SCM_UVECTOR_LENGTH (obj); |
3ffc7a36 MD |
342 | if (m == 0) |
343 | m = (short *) malloc (n * sizeof (short)); | |
d3dd80ab MG |
344 | if (m == NULL) |
345 | return NULL; | |
3ffc7a36 MD |
346 | memcpy (m, SCM_VELTS (obj), n * sizeof (short)); |
347 | break; | |
afe5177e | 348 | #endif |
3ffc7a36 MD |
349 | default: |
350 | scm_wrong_type_arg (0, 0, obj); | |
351 | } | |
352 | return m; | |
353 | } | |
354 | ||
355 | /* Convert a vector, weak vector or uniform vector into an array of | |
d3dd80ab MG |
356 | longs. If result array in arg 2 is NULL, malloc a new one. If out |
357 | of memory, return NULL. */ | |
3ffc7a36 MD |
358 | long * |
359 | gh_scm2longs (SCM obj, long *m) | |
360 | { | |
c014a02e | 361 | long i, n; |
3ffc7a36 | 362 | SCM val; |
1a548472 | 363 | if (SCM_IMP (obj)) |
3ffc7a36 MD |
364 | scm_wrong_type_arg (0, 0, obj); |
365 | switch (SCM_TYP7 (obj)) | |
366 | { | |
367 | case scm_tc7_vector: | |
368 | case scm_tc7_wvect: | |
9fd38a3d | 369 | n = SCM_VECTOR_LENGTH (obj); |
3ffc7a36 MD |
370 | for (i = 0; i < n; ++i) |
371 | { | |
372 | val = SCM_VELTS (obj)[i]; | |
0c95b57d | 373 | if (!SCM_INUMP (val) && !SCM_BIGP (val)) |
3ffc7a36 MD |
374 | scm_wrong_type_arg (0, 0, obj); |
375 | } | |
376 | if (m == 0) | |
377 | m = (long *) malloc (n * sizeof (long)); | |
d3dd80ab MG |
378 | if (m == NULL) |
379 | return NULL; | |
3ffc7a36 MD |
380 | for (i = 0; i < n; ++i) |
381 | { | |
382 | val = SCM_VELTS (obj)[i]; | |
e4b265d8 DH |
383 | m[i] = SCM_INUMP (val) |
384 | ? SCM_INUM (val) | |
385 | : scm_num2long (val, 0, NULL); | |
3ffc7a36 MD |
386 | } |
387 | break; | |
afe5177e | 388 | #ifdef HAVE_ARRAYS |
3ffc7a36 MD |
389 | case scm_tc7_ivect: |
390 | case scm_tc7_uvect: | |
9fd38a3d | 391 | n = SCM_UVECTOR_LENGTH (obj); |
3ffc7a36 MD |
392 | if (m == 0) |
393 | m = (long *) malloc (n * sizeof (long)); | |
d3dd80ab MG |
394 | if (m == NULL) |
395 | return NULL; | |
3ffc7a36 MD |
396 | memcpy (m, SCM_VELTS (obj), n * sizeof (long)); |
397 | break; | |
afe5177e | 398 | #endif |
3ffc7a36 MD |
399 | default: |
400 | scm_wrong_type_arg (0, 0, obj); | |
401 | } | |
402 | return m; | |
403 | } | |
404 | ||
405 | /* Convert a vector, weak vector or uniform vector into an array of | |
d3dd80ab MG |
406 | floats. If result array in arg 2 is NULL, malloc a new one. If |
407 | out of memory, return NULL. */ | |
3ffc7a36 MD |
408 | float * |
409 | gh_scm2floats (SCM obj, float *m) | |
410 | { | |
c014a02e | 411 | long i, n; |
3ffc7a36 | 412 | SCM val; |
1a548472 | 413 | if (SCM_IMP (obj)) |
3ffc7a36 MD |
414 | scm_wrong_type_arg (0, 0, obj); |
415 | switch (SCM_TYP7 (obj)) | |
416 | { | |
417 | case scm_tc7_vector: | |
418 | case scm_tc7_wvect: | |
9fd38a3d | 419 | n = SCM_VECTOR_LENGTH (obj); |
3ffc7a36 MD |
420 | for (i = 0; i < n; ++i) |
421 | { | |
422 | val = SCM_VELTS (obj)[i]; | |
423 | if (!SCM_INUMP (val) | |
0c95b57d | 424 | && !(SCM_BIGP (val) || SCM_REALP (val))) |
3ffc7a36 MD |
425 | scm_wrong_type_arg (0, 0, val); |
426 | } | |
427 | if (m == 0) | |
428 | m = (float *) malloc (n * sizeof (float)); | |
d3dd80ab MG |
429 | if (m == NULL) |
430 | return NULL; | |
3ffc7a36 MD |
431 | for (i = 0; i < n; ++i) |
432 | { | |
433 | val = SCM_VELTS (obj)[i]; | |
434 | if (SCM_INUMP (val)) | |
435 | m[i] = SCM_INUM (val); | |
436 | else if (SCM_BIGP (val)) | |
e4b265d8 | 437 | m[i] = scm_num2long (val, 0, NULL); |
3ffc7a36 | 438 | else |
eb42e2f0 | 439 | m[i] = SCM_REAL_VALUE (val); |
f3a2c4cf MD |
440 | } |
441 | break; | |
afe5177e | 442 | #ifdef HAVE_ARRAYS |
f3a2c4cf | 443 | case scm_tc7_fvect: |
9fd38a3d | 444 | n = SCM_UVECTOR_LENGTH (obj); |
3ffc7a36 MD |
445 | if (m == 0) |
446 | m = (float *) malloc (n * sizeof (float)); | |
d3dd80ab MG |
447 | if (m == NULL) |
448 | return NULL; | |
3ffc7a36 | 449 | memcpy (m, (float *) SCM_VELTS (obj), n * sizeof (float)); |
f3a2c4cf | 450 | break; |
16d35552 | 451 | |
f3a2c4cf | 452 | case scm_tc7_dvect: |
9fd38a3d | 453 | n = SCM_UVECTOR_LENGTH (obj); |
3ffc7a36 MD |
454 | if (m == 0) |
455 | m = (float*) malloc (n * sizeof (float)); | |
d3dd80ab MG |
456 | if (m == NULL) |
457 | return NULL; | |
f3a2c4cf | 458 | for (i = 0; i < n; ++i) |
3ffc7a36 MD |
459 | m[i] = ((double *) SCM_VELTS (obj))[i]; |
460 | break; | |
461 | #endif | |
462 | default: | |
463 | scm_wrong_type_arg (0, 0, obj); | |
464 | } | |
465 | return m; | |
466 | } | |
467 | ||
468 | /* Convert a vector, weak vector or uniform vector into an array of | |
d3dd80ab MG |
469 | doubles. If result array in arg 2 is NULL, malloc a new one. If |
470 | out of memory, return NULL. */ | |
3ffc7a36 MD |
471 | double * |
472 | gh_scm2doubles (SCM obj, double *m) | |
473 | { | |
c014a02e | 474 | long i, n; |
3ffc7a36 | 475 | SCM val; |
1a548472 | 476 | if (SCM_IMP (obj)) |
3ffc7a36 MD |
477 | scm_wrong_type_arg (0, 0, obj); |
478 | switch (SCM_TYP7 (obj)) | |
479 | { | |
480 | case scm_tc7_vector: | |
481 | case scm_tc7_wvect: | |
9fd38a3d | 482 | n = SCM_VECTOR_LENGTH (obj); |
3ffc7a36 MD |
483 | for (i = 0; i < n; ++i) |
484 | { | |
485 | val = SCM_VELTS (obj)[i]; | |
486 | if (!SCM_INUMP (val) | |
0c95b57d | 487 | && !(SCM_BIGP (val) || SCM_REALP (val))) |
3ffc7a36 MD |
488 | scm_wrong_type_arg (0, 0, val); |
489 | } | |
490 | if (m == 0) | |
491 | m = (double *) malloc (n * sizeof (double)); | |
d3dd80ab MG |
492 | if (m == NULL) |
493 | return NULL; | |
3ffc7a36 MD |
494 | for (i = 0; i < n; ++i) |
495 | { | |
496 | val = SCM_VELTS (obj)[i]; | |
497 | if (SCM_INUMP (val)) | |
498 | m[i] = SCM_INUM (val); | |
499 | else if (SCM_BIGP (val)) | |
e4b265d8 | 500 | m[i] = scm_num2long (val, 0, NULL); |
3ffc7a36 | 501 | else |
eb42e2f0 | 502 | m[i] = SCM_REAL_VALUE (val); |
3ffc7a36 MD |
503 | } |
504 | break; | |
afe5177e | 505 | #ifdef HAVE_ARRAYS |
3ffc7a36 | 506 | case scm_tc7_fvect: |
9fd38a3d | 507 | n = SCM_UVECTOR_LENGTH (obj); |
3ffc7a36 MD |
508 | if (m == 0) |
509 | m = (double *) malloc (n * sizeof (double)); | |
d3dd80ab MG |
510 | if (m == NULL) |
511 | return NULL; | |
3ffc7a36 MD |
512 | for (i = 0; i < n; ++i) |
513 | m[i] = ((float *) SCM_VELTS (obj))[i]; | |
514 | break; | |
16d35552 | 515 | |
3ffc7a36 | 516 | case scm_tc7_dvect: |
9fd38a3d | 517 | n = SCM_UVECTOR_LENGTH (obj); |
3ffc7a36 MD |
518 | if (m == 0) |
519 | m = (double*) malloc (n * sizeof (double)); | |
d3dd80ab MG |
520 | if (m == NULL) |
521 | return NULL; | |
3ffc7a36 | 522 | memcpy (m, SCM_VELTS (obj), n * sizeof (double)); |
f3a2c4cf MD |
523 | break; |
524 | #endif | |
525 | default: | |
526 | scm_wrong_type_arg (0, 0, obj); | |
527 | } | |
528 | return m; | |
529 | } | |
530 | ||
ee2a8b9b JB |
531 | /* string conversions between C and Scheme */ |
532 | ||
533 | /* gh_scm2newstr() -- Given a Scheme string STR, return a pointer to a | |
534 | new copy of its contents, followed by a null byte. If lenp is | |
535 | non-null, set *lenp to the string's length. | |
536 | ||
537 | This function uses malloc to obtain storage for the copy; the | |
d3dd80ab MG |
538 | caller is responsible for freeing it. If out of memory, NULL is |
539 | returned. | |
ee2a8b9b JB |
540 | |
541 | Note that Scheme strings may contain arbitrary data, including null | |
542 | characters. This means that null termination is not a reliable way | |
543 | to determine the length of the returned value. However, the | |
544 | function always copies the complete contents of STR, and sets | |
545 | *LEN_P to the true length of the string (when LEN_P is non-null). */ | |
546 | char * | |
1be6b49c | 547 | gh_scm2newstr (SCM str, size_t *lenp) |
ee2a8b9b JB |
548 | { |
549 | char *ret_str; | |
1be6b49c | 550 | size_t len; |
ee2a8b9b | 551 | |
9fd38a3d | 552 | SCM_ASSERT (SCM_STRINGP (str), str, SCM_ARG3, "gh_scm2newstr"); |
ee2a8b9b | 553 | |
9fd38a3d | 554 | len = SCM_STRING_LENGTH (str); |
ee2a8b9b | 555 | |
d3dd80ab MG |
556 | ret_str = (char *) malloc ((len + 1) * sizeof (char)); |
557 | if (ret_str == NULL) | |
558 | return NULL; | |
ee2a8b9b | 559 | /* so we copy tmp_str to ret_str, which is what we will allocate */ |
34f0f2b8 | 560 | memcpy (ret_str, SCM_STRING_CHARS (str), len); |
5d2b97cd | 561 | scm_remember_upto_here_1 (str); |
ee2a8b9b JB |
562 | /* now make sure we null-terminate it */ |
563 | ret_str[len] = '\0'; | |
564 | ||
ee2a8b9b JB |
565 | if (lenp != NULL) |
566 | { | |
567 | *lenp = len; | |
568 | } | |
569 | ||
570 | return ret_str; | |
571 | } | |
572 | ||
573 | ||
574 | /* Copy LEN characters at START from the Scheme string SRC to memory | |
575 | at DST. START is an index into SRC; zero means the beginning of | |
576 | the string. DST has already been allocated by the caller. | |
577 | ||
578 | If START + LEN is off the end of SRC, silently truncate the source | |
579 | region to fit the string. If truncation occurs, the corresponding | |
580 | area of DST is left unchanged. */ | |
581 | void | |
c014a02e | 582 | gh_get_substr (SCM src, char *dst, long start, size_t len) |
ee2a8b9b | 583 | { |
1be6b49c | 584 | size_t src_len, effective_length; |
9fd38a3d | 585 | SCM_ASSERT (SCM_STRINGP (src), src, SCM_ARG3, "gh_get_substr"); |
ee2a8b9b | 586 | |
9fd38a3d | 587 | src_len = SCM_STRING_LENGTH (src); |
ee2a8b9b | 588 | effective_length = (len < src_len) ? len : src_len; |
34f0f2b8 | 589 | memcpy (dst + start, SCM_STRING_CHARS (src), effective_length * sizeof (char)); |
ee2a8b9b | 590 | /* FIXME: must signal an error if len > src_len */ |
5d2b97cd | 591 | scm_remember_upto_here_1 (src); |
ee2a8b9b JB |
592 | } |
593 | ||
594 | ||
595 | /* gh_scm2newsymbol() -- Given a Scheme symbol 'identifier, return a | |
596 | pointer to a string with the symbol characters "identifier", | |
597 | followed by a null byte. If lenp is non-null, set *lenp to the | |
598 | string's length. | |
599 | ||
600 | This function uses malloc to obtain storage for the copy; the | |
d3dd80ab MG |
601 | caller is responsible for freeing it. If out of memory, NULL is |
602 | returned.*/ | |
ee2a8b9b | 603 | char * |
1be6b49c | 604 | gh_symbol2newstr (SCM sym, size_t *lenp) |
ee2a8b9b JB |
605 | { |
606 | char *ret_str; | |
1be6b49c | 607 | size_t len; |
ee2a8b9b | 608 | |
b24b5e13 | 609 | SCM_ASSERT (SCM_SYMBOLP (sym), sym, SCM_ARG3, "gh_scm2newsymbol"); |
ee2a8b9b | 610 | |
9fd38a3d | 611 | len = SCM_SYMBOL_LENGTH (sym); |
ee2a8b9b | 612 | |
d3dd80ab MG |
613 | ret_str = (char *) malloc ((len + 1) * sizeof (char)); |
614 | if (ret_str == NULL) | |
615 | return NULL; | |
b24b5e13 | 616 | /* so we copy sym to ret_str, which is what we will allocate */ |
86c991c2 | 617 | memcpy (ret_str, SCM_SYMBOL_CHARS (sym), len); |
5d2b97cd | 618 | scm_remember_upto_here_1 (sym); |
ee2a8b9b JB |
619 | /* now make sure we null-terminate it */ |
620 | ret_str[len] = '\0'; | |
621 | ||
ee2a8b9b JB |
622 | if (lenp != NULL) |
623 | { | |
624 | *lenp = len; | |
625 | } | |
626 | ||
627 | return ret_str; | |
628 | } | |
629 | ||
630 | ||
631 | /* create a new vector of the given length, all initialized to the | |
632 | given value */ | |
e5eece74 MG |
633 | SCM |
634 | gh_make_vector (SCM len, SCM fill) | |
ee2a8b9b | 635 | { |
a8741caa | 636 | return scm_make_vector (len, fill); |
ee2a8b9b JB |
637 | } |
638 | ||
639 | /* set the given element of the given vector to the given value */ | |
640 | SCM | |
956328d2 | 641 | gh_vector_set_x (SCM vec, SCM pos, SCM val) |
ee2a8b9b JB |
642 | { |
643 | return scm_vector_set_x (vec, pos, val); | |
644 | } | |
645 | ||
646 | /* retrieve the given element of the given vector */ | |
647 | SCM | |
e5eece74 | 648 | gh_vector_ref (SCM vec, SCM pos) |
ee2a8b9b JB |
649 | { |
650 | return scm_vector_ref (vec, pos); | |
651 | } | |
652 | ||
653 | /* returns the length of the given vector */ | |
c014a02e | 654 | unsigned long |
ee2a8b9b JB |
655 | gh_vector_length (SCM v) |
656 | { | |
c014a02e | 657 | return (unsigned long) SCM_VECTOR_LENGTH (v); |
ee2a8b9b | 658 | } |
35379308 | 659 | |
afe5177e | 660 | #ifdef HAVE_ARRAYS |
ef5d3ae1 MG |
661 | /* uniform vector support */ |
662 | ||
663 | /* returns the length as a C unsigned long integer */ | |
c014a02e | 664 | unsigned long |
ef5d3ae1 MG |
665 | gh_uniform_vector_length (SCM v) |
666 | { | |
c014a02e | 667 | return (unsigned long) SCM_UVECTOR_LENGTH (v); |
ef5d3ae1 MG |
668 | } |
669 | ||
670 | /* gets the given element from a uniform vector; ilist is a list (or | |
671 | possibly a single integer) of indices, and its length is the | |
672 | dimension of the uniform vector */ | |
673 | SCM | |
674 | gh_uniform_vector_ref (SCM v, SCM ilist) | |
675 | { | |
676 | return scm_uniform_vector_ref (v, ilist); | |
677 | } | |
678 | ||
679 | /* sets an individual element in a uniform vector */ | |
680 | /* SCM */ | |
681 | /* gh_list_to_uniform_array ( */ | |
afe5177e | 682 | #endif |
ef5d3ae1 | 683 | |
35379308 JB |
684 | /* Data lookups between C and Scheme |
685 | ||
686 | Look up a symbol with a given name, and return the object to which | |
687 | it is bound. gh_lookup examines the Guile top level, and | |
688 | gh_module_lookup checks the module namespace specified by the | |
689 | `vec' argument. | |
690 | ||
691 | The return value is the Scheme object to which SNAME is bound, or | |
07de6c47 MV |
692 | SCM_UNDEFINED if SNAME is not bound in the given context. |
693 | */ | |
35379308 JB |
694 | |
695 | SCM | |
bcee10dd | 696 | gh_lookup (const char *sname) |
35379308 | 697 | { |
abc235ad | 698 | return gh_module_lookup (scm_current_module (), sname); |
35379308 JB |
699 | } |
700 | ||
abc235ad | 701 | |
35379308 | 702 | SCM |
abc235ad MV |
703 | gh_module_lookup (SCM module, const char *sname) |
704 | #define FUNC_NAME "gh_module_lookup" | |
35379308 | 705 | { |
86d31dfe | 706 | SCM sym, var; |
abc235ad MV |
707 | |
708 | SCM_VALIDATE_MODULE (SCM_ARG1, module); | |
709 | ||
710 | sym = gh_symbol2scm (sname); | |
86d31dfe MV |
711 | var = scm_sym2var (sym, scm_module_lookup_closure (module), SCM_BOOL_F); |
712 | if (var != SCM_BOOL_F) | |
713 | return SCM_VARIABLE_REF (var); | |
35379308 JB |
714 | else |
715 | return SCM_UNDEFINED; | |
716 | } | |
abc235ad | 717 | #undef FUNC_NAME |
89e00824 ML |
718 | |
719 | /* | |
720 | Local Variables: | |
721 | c-file-style: "gnu" | |
722 | End: | |
723 | */ |