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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 JB |
83 | { |
84 | return scm_makfromstr (s, len, 0); | |
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 ML |
101 | size_t dst_len; |
102 | size_t effective_length; | |
ee2a8b9b | 103 | |
b24b5e13 | 104 | SCM_ASSERT (SCM_STRINGP (dst), dst, SCM_ARG3, "gh_set_substr"); |
fd88bd7c | 105 | |
86c991c2 | 106 | dst_ptr = SCM_STRING_CHARS (dst); |
9fd38a3d | 107 | dst_len = SCM_STRING_LENGTH (dst); |
1be6b49c | 108 | SCM_ASSERT (len >= 0 && len <= dst_len, |
fd88bd7c JB |
109 | dst, SCM_ARG4, "gh_set_substr"); |
110 | ||
1be6b49c | 111 | effective_length = (len < dst_len) ? len : dst_len; |
fd88bd7c | 112 | memmove (dst_ptr + start, src, effective_length); |
5d2b97cd | 113 | scm_remember_upto_here_1 (dst); |
ee2a8b9b JB |
114 | } |
115 | ||
116 | /* Return the symbol named SYMBOL_STR. */ | |
117 | SCM | |
4921140c | 118 | gh_symbol2scm (const char *symbol_str) |
ee2a8b9b | 119 | { |
38ae064c | 120 | return scm_str2symbol(symbol_str); |
ee2a8b9b JB |
121 | } |
122 | ||
b774ee1f | 123 | SCM |
c014a02e | 124 | gh_ints2scm (const int *d, long n) |
b774ee1f | 125 | { |
c014a02e | 126 | long i; |
00ffa0e7 | 127 | SCM v = scm_c_make_vector (n, SCM_UNSPECIFIED); |
0acef67a JB |
128 | SCM *velts = SCM_VELTS(v); |
129 | ||
b774ee1f | 130 | for (i = 0; i < n; ++i) |
1be6b49c | 131 | velts[i] = (SCM_FIXABLE (d[i]) ? SCM_MAKINUM (d[i]) : scm_i_long2big (d[i])); |
8f379a8f | 132 | |
0acef67a | 133 | return v; |
3ffc7a36 MD |
134 | } |
135 | ||
136 | SCM | |
c014a02e | 137 | gh_doubles2scm (const double *d, long n) |
3ffc7a36 | 138 | { |
c014a02e | 139 | long i; |
00ffa0e7 | 140 | SCM v = scm_c_make_vector (n, SCM_UNSPECIFIED); |
0acef67a JB |
141 | SCM *velts = SCM_VELTS(v); |
142 | ||
143 | for(i = 0; i < n; i++) | |
f8de44c1 | 144 | velts[i] = scm_make_real (d[i]); |
0acef67a JB |
145 | return v; |
146 | } | |
147 | ||
afe5177e | 148 | #ifdef HAVE_ARRAYS |
0acef67a JB |
149 | /* Do not use this function for building normal Scheme vectors, unless |
150 | you arrange for the elements to be protected from GC while you | |
151 | initialize the vector. */ | |
152 | static SCM | |
1be6b49c | 153 | makvect (char *m, size_t len, int type) |
0acef67a JB |
154 | { |
155 | SCM ans; | |
156 | SCM_NEWCELL (ans); | |
157 | SCM_DEFER_INTS; | |
6a0476fd | 158 | SCM_SET_UVECTOR_BASE (ans, m); |
93778877 | 159 | SCM_SET_UVECTOR_LENGTH (ans, len, type); |
0acef67a JB |
160 | SCM_ALLOW_INTS; |
161 | return ans; | |
b774ee1f MD |
162 | } |
163 | ||
3ffc7a36 | 164 | SCM |
c014a02e | 165 | gh_chars2byvect (const char *d, long n) |
3ffc7a36 MD |
166 | { |
167 | char *m = scm_must_malloc (n * sizeof (char), "vector"); | |
168 | memcpy (m, d, n * sizeof (char)); | |
169 | return makvect (m, n, scm_tc7_byvect); | |
170 | } | |
171 | ||
172 | SCM | |
c014a02e | 173 | gh_shorts2svect (const short *d, long n) |
3ffc7a36 MD |
174 | { |
175 | char *m = scm_must_malloc (n * sizeof (short), "vector"); | |
176 | memcpy (m, d, n * sizeof (short)); | |
177 | return makvect (m, n, scm_tc7_svect); | |
178 | } | |
179 | ||
b774ee1f | 180 | SCM |
c014a02e | 181 | gh_longs2ivect (const long *d, long n) |
b774ee1f MD |
182 | { |
183 | char *m = scm_must_malloc (n * sizeof (long), "vector"); | |
184 | memcpy (m, d, n * sizeof (long)); | |
185 | return makvect (m, n, scm_tc7_ivect); | |
186 | } | |
187 | ||
188 | SCM | |
c014a02e | 189 | gh_ulongs2uvect (const unsigned long *d, long n) |
b774ee1f MD |
190 | { |
191 | char *m = scm_must_malloc (n * sizeof (unsigned long), "vector"); | |
192 | memcpy (m, d, n * sizeof (unsigned long)); | |
193 | return makvect (m, n, scm_tc7_uvect); | |
194 | } | |
195 | ||
196 | SCM | |
c014a02e | 197 | gh_floats2fvect (const float *d, long n) |
b774ee1f | 198 | { |
3ffc7a36 MD |
199 | char *m = scm_must_malloc (n * sizeof (float), "vector"); |
200 | memcpy (m, d, n * sizeof (float)); | |
201 | return makvect (m, n, scm_tc7_fvect); | |
b774ee1f MD |
202 | } |
203 | ||
f3a2c4cf | 204 | SCM |
c014a02e | 205 | gh_doubles2dvect (const double *d, long n) |
f3a2c4cf | 206 | { |
f3a2c4cf MD |
207 | char *m = scm_must_malloc (n * sizeof (double), "vector"); |
208 | memcpy (m, d, n * sizeof (double)); | |
b774ee1f | 209 | return makvect (m, n, scm_tc7_dvect); |
f3a2c4cf MD |
210 | } |
211 | #endif | |
ee2a8b9b JB |
212 | |
213 | /* data conversion scheme->C */ | |
214 | int | |
215 | gh_scm2bool (SCM obj) | |
216 | { | |
fbd485ba | 217 | return (SCM_FALSEP (obj)) ? 0 : 1; |
ee2a8b9b JB |
218 | } |
219 | unsigned long | |
220 | gh_scm2ulong (SCM obj) | |
221 | { | |
e4b265d8 | 222 | return scm_num2ulong (obj, SCM_ARG1, "gh_scm2ulong"); |
ee2a8b9b JB |
223 | } |
224 | long | |
225 | gh_scm2long (SCM obj) | |
226 | { | |
e4b265d8 | 227 | return scm_num2long (obj, SCM_ARG1, "gh_scm2long"); |
ee2a8b9b JB |
228 | } |
229 | int | |
230 | gh_scm2int (SCM obj) | |
231 | { | |
1be6b49c | 232 | return (int) scm_num2int (obj, SCM_ARG1, "gh_scm2int"); |
ee2a8b9b JB |
233 | } |
234 | double | |
235 | gh_scm2double (SCM obj) | |
236 | { | |
237 | return scm_num2dbl (obj, "gh_scm2double"); | |
238 | } | |
239 | char | |
240 | gh_scm2char (SCM obj) | |
0e1d5b0a | 241 | #define FUNC_NAME "gh_scm2char" |
ee2a8b9b | 242 | { |
0e1d5b0a | 243 | SCM_VALIDATE_CHAR (SCM_ARG1, obj); |
7866a09b | 244 | return SCM_CHAR (obj); |
ee2a8b9b | 245 | } |
fd336365 | 246 | #undef FUNC_NAME |
ee2a8b9b | 247 | |
3ffc7a36 MD |
248 | /* Convert a vector, weak vector, string, substring or uniform vector |
249 | into an array of chars. If result array in arg 2 is NULL, malloc a | |
d3dd80ab | 250 | new one. If out of memory, return NULL. */ |
3ffc7a36 MD |
251 | char * |
252 | gh_scm2chars (SCM obj, char *m) | |
f3a2c4cf | 253 | { |
c014a02e ML |
254 | long i, n; |
255 | long v; | |
f3a2c4cf | 256 | SCM val; |
1a548472 | 257 | if (SCM_IMP (obj)) |
f3a2c4cf MD |
258 | scm_wrong_type_arg (0, 0, obj); |
259 | switch (SCM_TYP7 (obj)) | |
260 | { | |
261 | case scm_tc7_vector: | |
262 | case scm_tc7_wvect: | |
9fd38a3d | 263 | n = SCM_VECTOR_LENGTH (obj); |
f3a2c4cf MD |
264 | for (i = 0; i < n; ++i) |
265 | { | |
266 | val = SCM_VELTS (obj)[i]; | |
267 | if (SCM_INUMP (val)) | |
3ffc7a36 MD |
268 | { |
269 | v = SCM_INUM (val); | |
270 | if (v < -128 || v > 255) | |
271 | scm_out_of_range (0, obj); | |
272 | } | |
f3a2c4cf | 273 | else |
3ffc7a36 MD |
274 | scm_wrong_type_arg (0, 0, obj); |
275 | } | |
276 | if (m == 0) | |
277 | m = (char *) malloc (n * sizeof (char)); | |
d3dd80ab MG |
278 | if (m == NULL) |
279 | return NULL; | |
3ffc7a36 MD |
280 | for (i = 0; i < n; ++i) |
281 | m[i] = SCM_INUM (SCM_VELTS (obj)[i]); | |
282 | break; | |
afe5177e | 283 | #ifdef HAVE_ARRAYS |
3ffc7a36 | 284 | case scm_tc7_byvect: |
b5c2579a DH |
285 | n = SCM_UVECTOR_LENGTH (obj); |
286 | if (m == 0) | |
287 | m = (char *) malloc (n * sizeof (char)); | |
d3dd80ab MG |
288 | if (m == NULL) |
289 | return NULL; | |
b5c2579a DH |
290 | memcpy (m, SCM_VELTS (obj), n * sizeof (char)); |
291 | break; | |
afe5177e | 292 | #endif |
3ffc7a36 MD |
293 | case scm_tc7_string: |
294 | case scm_tc7_substring: | |
b5c2579a | 295 | n = SCM_STRING_LENGTH (obj); |
3ffc7a36 MD |
296 | if (m == 0) |
297 | m = (char *) malloc (n * sizeof (char)); | |
d3dd80ab MG |
298 | if (m == NULL) |
299 | return NULL; | |
3ffc7a36 MD |
300 | memcpy (m, SCM_VELTS (obj), n * sizeof (char)); |
301 | break; | |
302 | default: | |
303 | scm_wrong_type_arg (0, 0, obj); | |
304 | } | |
305 | return m; | |
306 | } | |
307 | ||
308 | /* Convert a vector, weak vector or uniform vector into an array of | |
d3dd80ab MG |
309 | shorts. If result array in arg 2 is NULL, malloc a new one. If |
310 | out of memory, return NULL. */ | |
3ffc7a36 MD |
311 | short * |
312 | gh_scm2shorts (SCM obj, short *m) | |
313 | { | |
c014a02e ML |
314 | long i, n; |
315 | long v; | |
3ffc7a36 | 316 | SCM val; |
1a548472 | 317 | if (SCM_IMP (obj)) |
3ffc7a36 MD |
318 | scm_wrong_type_arg (0, 0, obj); |
319 | switch (SCM_TYP7 (obj)) | |
320 | { | |
321 | case scm_tc7_vector: | |
322 | case scm_tc7_wvect: | |
9fd38a3d | 323 | n = SCM_VECTOR_LENGTH (obj); |
3ffc7a36 MD |
324 | for (i = 0; i < n; ++i) |
325 | { | |
326 | val = SCM_VELTS (obj)[i]; | |
327 | if (SCM_INUMP (val)) | |
f3a2c4cf | 328 | { |
3ffc7a36 MD |
329 | v = SCM_INUM (val); |
330 | if (v < -32768 || v > 65535) | |
331 | scm_out_of_range (0, obj); | |
f3a2c4cf | 332 | } |
3ffc7a36 MD |
333 | else |
334 | scm_wrong_type_arg (0, 0, obj); | |
335 | } | |
336 | if (m == 0) | |
337 | m = (short *) malloc (n * sizeof (short)); | |
d3dd80ab MG |
338 | if (m == NULL) |
339 | return NULL; | |
3ffc7a36 MD |
340 | for (i = 0; i < n; ++i) |
341 | m[i] = SCM_INUM (SCM_VELTS (obj)[i]); | |
342 | break; | |
afe5177e | 343 | #ifdef HAVE_ARRAYS |
3ffc7a36 | 344 | case scm_tc7_svect: |
9fd38a3d | 345 | n = SCM_UVECTOR_LENGTH (obj); |
3ffc7a36 MD |
346 | if (m == 0) |
347 | m = (short *) malloc (n * sizeof (short)); | |
d3dd80ab MG |
348 | if (m == NULL) |
349 | return NULL; | |
3ffc7a36 MD |
350 | memcpy (m, SCM_VELTS (obj), n * sizeof (short)); |
351 | break; | |
afe5177e | 352 | #endif |
3ffc7a36 MD |
353 | default: |
354 | scm_wrong_type_arg (0, 0, obj); | |
355 | } | |
356 | return m; | |
357 | } | |
358 | ||
359 | /* Convert a vector, weak vector or uniform vector into an array of | |
d3dd80ab MG |
360 | longs. If result array in arg 2 is NULL, malloc a new one. If out |
361 | of memory, return NULL. */ | |
3ffc7a36 MD |
362 | long * |
363 | gh_scm2longs (SCM obj, long *m) | |
364 | { | |
c014a02e | 365 | long i, n; |
3ffc7a36 | 366 | SCM val; |
1a548472 | 367 | if (SCM_IMP (obj)) |
3ffc7a36 MD |
368 | scm_wrong_type_arg (0, 0, obj); |
369 | switch (SCM_TYP7 (obj)) | |
370 | { | |
371 | case scm_tc7_vector: | |
372 | case scm_tc7_wvect: | |
9fd38a3d | 373 | n = SCM_VECTOR_LENGTH (obj); |
3ffc7a36 MD |
374 | for (i = 0; i < n; ++i) |
375 | { | |
376 | val = SCM_VELTS (obj)[i]; | |
0c95b57d | 377 | if (!SCM_INUMP (val) && !SCM_BIGP (val)) |
3ffc7a36 MD |
378 | scm_wrong_type_arg (0, 0, obj); |
379 | } | |
380 | if (m == 0) | |
381 | m = (long *) malloc (n * sizeof (long)); | |
d3dd80ab MG |
382 | if (m == NULL) |
383 | return NULL; | |
3ffc7a36 MD |
384 | for (i = 0; i < n; ++i) |
385 | { | |
386 | val = SCM_VELTS (obj)[i]; | |
e4b265d8 DH |
387 | m[i] = SCM_INUMP (val) |
388 | ? SCM_INUM (val) | |
389 | : scm_num2long (val, 0, NULL); | |
3ffc7a36 MD |
390 | } |
391 | break; | |
afe5177e | 392 | #ifdef HAVE_ARRAYS |
3ffc7a36 MD |
393 | case scm_tc7_ivect: |
394 | case scm_tc7_uvect: | |
9fd38a3d | 395 | n = SCM_UVECTOR_LENGTH (obj); |
3ffc7a36 MD |
396 | if (m == 0) |
397 | m = (long *) malloc (n * sizeof (long)); | |
d3dd80ab MG |
398 | if (m == NULL) |
399 | return NULL; | |
3ffc7a36 MD |
400 | memcpy (m, SCM_VELTS (obj), n * sizeof (long)); |
401 | break; | |
afe5177e | 402 | #endif |
3ffc7a36 MD |
403 | default: |
404 | scm_wrong_type_arg (0, 0, obj); | |
405 | } | |
406 | return m; | |
407 | } | |
408 | ||
409 | /* Convert a vector, weak vector or uniform vector into an array of | |
d3dd80ab MG |
410 | floats. If result array in arg 2 is NULL, malloc a new one. If |
411 | out of memory, return NULL. */ | |
3ffc7a36 MD |
412 | float * |
413 | gh_scm2floats (SCM obj, float *m) | |
414 | { | |
c014a02e | 415 | long i, n; |
3ffc7a36 | 416 | SCM val; |
1a548472 | 417 | if (SCM_IMP (obj)) |
3ffc7a36 MD |
418 | scm_wrong_type_arg (0, 0, obj); |
419 | switch (SCM_TYP7 (obj)) | |
420 | { | |
421 | case scm_tc7_vector: | |
422 | case scm_tc7_wvect: | |
9fd38a3d | 423 | n = SCM_VECTOR_LENGTH (obj); |
3ffc7a36 MD |
424 | for (i = 0; i < n; ++i) |
425 | { | |
426 | val = SCM_VELTS (obj)[i]; | |
427 | if (!SCM_INUMP (val) | |
0c95b57d | 428 | && !(SCM_BIGP (val) || SCM_REALP (val))) |
3ffc7a36 MD |
429 | scm_wrong_type_arg (0, 0, val); |
430 | } | |
431 | if (m == 0) | |
432 | m = (float *) malloc (n * sizeof (float)); | |
d3dd80ab MG |
433 | if (m == NULL) |
434 | return NULL; | |
3ffc7a36 MD |
435 | for (i = 0; i < n; ++i) |
436 | { | |
437 | val = SCM_VELTS (obj)[i]; | |
438 | if (SCM_INUMP (val)) | |
439 | m[i] = SCM_INUM (val); | |
440 | else if (SCM_BIGP (val)) | |
e4b265d8 | 441 | m[i] = scm_num2long (val, 0, NULL); |
3ffc7a36 | 442 | else |
eb42e2f0 | 443 | m[i] = SCM_REAL_VALUE (val); |
f3a2c4cf MD |
444 | } |
445 | break; | |
afe5177e | 446 | #ifdef HAVE_ARRAYS |
f3a2c4cf | 447 | case scm_tc7_fvect: |
9fd38a3d | 448 | n = SCM_UVECTOR_LENGTH (obj); |
3ffc7a36 MD |
449 | if (m == 0) |
450 | m = (float *) malloc (n * sizeof (float)); | |
d3dd80ab MG |
451 | if (m == NULL) |
452 | return NULL; | |
3ffc7a36 | 453 | memcpy (m, (float *) SCM_VELTS (obj), n * sizeof (float)); |
f3a2c4cf | 454 | break; |
16d35552 | 455 | |
f3a2c4cf | 456 | case scm_tc7_dvect: |
9fd38a3d | 457 | n = SCM_UVECTOR_LENGTH (obj); |
3ffc7a36 MD |
458 | if (m == 0) |
459 | m = (float*) malloc (n * sizeof (float)); | |
d3dd80ab MG |
460 | if (m == NULL) |
461 | return NULL; | |
f3a2c4cf | 462 | for (i = 0; i < n; ++i) |
3ffc7a36 MD |
463 | m[i] = ((double *) SCM_VELTS (obj))[i]; |
464 | break; | |
465 | #endif | |
466 | default: | |
467 | scm_wrong_type_arg (0, 0, obj); | |
468 | } | |
469 | return m; | |
470 | } | |
471 | ||
472 | /* Convert a vector, weak vector or uniform vector into an array of | |
d3dd80ab MG |
473 | doubles. If result array in arg 2 is NULL, malloc a new one. If |
474 | out of memory, return NULL. */ | |
3ffc7a36 MD |
475 | double * |
476 | gh_scm2doubles (SCM obj, double *m) | |
477 | { | |
c014a02e | 478 | long i, n; |
3ffc7a36 | 479 | SCM val; |
1a548472 | 480 | if (SCM_IMP (obj)) |
3ffc7a36 MD |
481 | scm_wrong_type_arg (0, 0, obj); |
482 | switch (SCM_TYP7 (obj)) | |
483 | { | |
484 | case scm_tc7_vector: | |
485 | case scm_tc7_wvect: | |
9fd38a3d | 486 | n = SCM_VECTOR_LENGTH (obj); |
3ffc7a36 MD |
487 | for (i = 0; i < n; ++i) |
488 | { | |
489 | val = SCM_VELTS (obj)[i]; | |
490 | if (!SCM_INUMP (val) | |
0c95b57d | 491 | && !(SCM_BIGP (val) || SCM_REALP (val))) |
3ffc7a36 MD |
492 | scm_wrong_type_arg (0, 0, val); |
493 | } | |
494 | if (m == 0) | |
495 | m = (double *) malloc (n * sizeof (double)); | |
d3dd80ab MG |
496 | if (m == NULL) |
497 | return NULL; | |
3ffc7a36 MD |
498 | for (i = 0; i < n; ++i) |
499 | { | |
500 | val = SCM_VELTS (obj)[i]; | |
501 | if (SCM_INUMP (val)) | |
502 | m[i] = SCM_INUM (val); | |
503 | else if (SCM_BIGP (val)) | |
e4b265d8 | 504 | m[i] = scm_num2long (val, 0, NULL); |
3ffc7a36 | 505 | else |
eb42e2f0 | 506 | m[i] = SCM_REAL_VALUE (val); |
3ffc7a36 MD |
507 | } |
508 | break; | |
afe5177e | 509 | #ifdef HAVE_ARRAYS |
3ffc7a36 | 510 | case scm_tc7_fvect: |
9fd38a3d | 511 | n = SCM_UVECTOR_LENGTH (obj); |
3ffc7a36 MD |
512 | if (m == 0) |
513 | m = (double *) malloc (n * sizeof (double)); | |
d3dd80ab MG |
514 | if (m == NULL) |
515 | return NULL; | |
3ffc7a36 MD |
516 | for (i = 0; i < n; ++i) |
517 | m[i] = ((float *) SCM_VELTS (obj))[i]; | |
518 | break; | |
16d35552 | 519 | |
3ffc7a36 | 520 | case scm_tc7_dvect: |
9fd38a3d | 521 | n = SCM_UVECTOR_LENGTH (obj); |
3ffc7a36 MD |
522 | if (m == 0) |
523 | m = (double*) malloc (n * sizeof (double)); | |
d3dd80ab MG |
524 | if (m == NULL) |
525 | return NULL; | |
3ffc7a36 | 526 | memcpy (m, SCM_VELTS (obj), n * sizeof (double)); |
f3a2c4cf MD |
527 | break; |
528 | #endif | |
529 | default: | |
530 | scm_wrong_type_arg (0, 0, obj); | |
531 | } | |
532 | return m; | |
533 | } | |
534 | ||
ee2a8b9b JB |
535 | /* string conversions between C and Scheme */ |
536 | ||
537 | /* gh_scm2newstr() -- Given a Scheme string STR, return a pointer to a | |
538 | new copy of its contents, followed by a null byte. If lenp is | |
539 | non-null, set *lenp to the string's length. | |
540 | ||
541 | This function uses malloc to obtain storage for the copy; the | |
d3dd80ab MG |
542 | caller is responsible for freeing it. If out of memory, NULL is |
543 | returned. | |
ee2a8b9b JB |
544 | |
545 | Note that Scheme strings may contain arbitrary data, including null | |
546 | characters. This means that null termination is not a reliable way | |
547 | to determine the length of the returned value. However, the | |
548 | function always copies the complete contents of STR, and sets | |
549 | *LEN_P to the true length of the string (when LEN_P is non-null). */ | |
550 | char * | |
1be6b49c | 551 | gh_scm2newstr (SCM str, size_t *lenp) |
ee2a8b9b JB |
552 | { |
553 | char *ret_str; | |
1be6b49c | 554 | size_t len; |
ee2a8b9b | 555 | |
9fd38a3d | 556 | SCM_ASSERT (SCM_STRINGP (str), str, SCM_ARG3, "gh_scm2newstr"); |
ee2a8b9b | 557 | |
9fd38a3d | 558 | len = SCM_STRING_LENGTH (str); |
ee2a8b9b | 559 | |
d3dd80ab MG |
560 | ret_str = (char *) malloc ((len + 1) * sizeof (char)); |
561 | if (ret_str == NULL) | |
562 | return NULL; | |
ee2a8b9b | 563 | /* so we copy tmp_str to ret_str, which is what we will allocate */ |
34f0f2b8 | 564 | memcpy (ret_str, SCM_STRING_CHARS (str), len); |
5d2b97cd | 565 | scm_remember_upto_here_1 (str); |
ee2a8b9b JB |
566 | /* now make sure we null-terminate it */ |
567 | ret_str[len] = '\0'; | |
568 | ||
ee2a8b9b JB |
569 | if (lenp != NULL) |
570 | { | |
571 | *lenp = len; | |
572 | } | |
573 | ||
574 | return ret_str; | |
575 | } | |
576 | ||
577 | ||
578 | /* Copy LEN characters at START from the Scheme string SRC to memory | |
579 | at DST. START is an index into SRC; zero means the beginning of | |
580 | the string. DST has already been allocated by the caller. | |
581 | ||
582 | If START + LEN is off the end of SRC, silently truncate the source | |
583 | region to fit the string. If truncation occurs, the corresponding | |
584 | area of DST is left unchanged. */ | |
585 | void | |
c014a02e | 586 | gh_get_substr (SCM src, char *dst, long start, size_t len) |
ee2a8b9b | 587 | { |
1be6b49c | 588 | size_t src_len, effective_length; |
9fd38a3d | 589 | SCM_ASSERT (SCM_STRINGP (src), src, SCM_ARG3, "gh_get_substr"); |
ee2a8b9b | 590 | |
9fd38a3d | 591 | src_len = SCM_STRING_LENGTH (src); |
ee2a8b9b | 592 | effective_length = (len < src_len) ? len : src_len; |
34f0f2b8 | 593 | memcpy (dst + start, SCM_STRING_CHARS (src), effective_length * sizeof (char)); |
ee2a8b9b | 594 | /* FIXME: must signal an error if len > src_len */ |
5d2b97cd | 595 | scm_remember_upto_here_1 (src); |
ee2a8b9b JB |
596 | } |
597 | ||
598 | ||
599 | /* gh_scm2newsymbol() -- Given a Scheme symbol 'identifier, return a | |
600 | pointer to a string with the symbol characters "identifier", | |
601 | followed by a null byte. If lenp is non-null, set *lenp to the | |
602 | string's length. | |
603 | ||
604 | This function uses malloc to obtain storage for the copy; the | |
d3dd80ab MG |
605 | caller is responsible for freeing it. If out of memory, NULL is |
606 | returned.*/ | |
ee2a8b9b | 607 | char * |
1be6b49c | 608 | gh_symbol2newstr (SCM sym, size_t *lenp) |
ee2a8b9b JB |
609 | { |
610 | char *ret_str; | |
1be6b49c | 611 | size_t len; |
ee2a8b9b | 612 | |
b24b5e13 | 613 | SCM_ASSERT (SCM_SYMBOLP (sym), sym, SCM_ARG3, "gh_scm2newsymbol"); |
ee2a8b9b | 614 | |
9fd38a3d | 615 | len = SCM_SYMBOL_LENGTH (sym); |
ee2a8b9b | 616 | |
d3dd80ab MG |
617 | ret_str = (char *) malloc ((len + 1) * sizeof (char)); |
618 | if (ret_str == NULL) | |
619 | return NULL; | |
b24b5e13 | 620 | /* so we copy sym to ret_str, which is what we will allocate */ |
86c991c2 | 621 | memcpy (ret_str, SCM_SYMBOL_CHARS (sym), len); |
5d2b97cd | 622 | scm_remember_upto_here_1 (sym); |
ee2a8b9b JB |
623 | /* now make sure we null-terminate it */ |
624 | ret_str[len] = '\0'; | |
625 | ||
ee2a8b9b JB |
626 | if (lenp != NULL) |
627 | { | |
628 | *lenp = len; | |
629 | } | |
630 | ||
631 | return ret_str; | |
632 | } | |
633 | ||
634 | ||
635 | /* create a new vector of the given length, all initialized to the | |
636 | given value */ | |
e5eece74 MG |
637 | SCM |
638 | gh_make_vector (SCM len, SCM fill) | |
ee2a8b9b | 639 | { |
a8741caa | 640 | return scm_make_vector (len, fill); |
ee2a8b9b JB |
641 | } |
642 | ||
643 | /* set the given element of the given vector to the given value */ | |
644 | SCM | |
956328d2 | 645 | gh_vector_set_x (SCM vec, SCM pos, SCM val) |
ee2a8b9b JB |
646 | { |
647 | return scm_vector_set_x (vec, pos, val); | |
648 | } | |
649 | ||
650 | /* retrieve the given element of the given vector */ | |
651 | SCM | |
e5eece74 | 652 | gh_vector_ref (SCM vec, SCM pos) |
ee2a8b9b JB |
653 | { |
654 | return scm_vector_ref (vec, pos); | |
655 | } | |
656 | ||
657 | /* returns the length of the given vector */ | |
c014a02e | 658 | unsigned long |
ee2a8b9b JB |
659 | gh_vector_length (SCM v) |
660 | { | |
c014a02e | 661 | return (unsigned long) SCM_VECTOR_LENGTH (v); |
ee2a8b9b | 662 | } |
35379308 | 663 | |
afe5177e | 664 | #ifdef HAVE_ARRAYS |
ef5d3ae1 MG |
665 | /* uniform vector support */ |
666 | ||
667 | /* returns the length as a C unsigned long integer */ | |
c014a02e | 668 | unsigned long |
ef5d3ae1 MG |
669 | gh_uniform_vector_length (SCM v) |
670 | { | |
c014a02e | 671 | return (unsigned long) SCM_UVECTOR_LENGTH (v); |
ef5d3ae1 MG |
672 | } |
673 | ||
674 | /* gets the given element from a uniform vector; ilist is a list (or | |
675 | possibly a single integer) of indices, and its length is the | |
676 | dimension of the uniform vector */ | |
677 | SCM | |
678 | gh_uniform_vector_ref (SCM v, SCM ilist) | |
679 | { | |
680 | return scm_uniform_vector_ref (v, ilist); | |
681 | } | |
682 | ||
683 | /* sets an individual element in a uniform vector */ | |
684 | /* SCM */ | |
685 | /* gh_list_to_uniform_array ( */ | |
afe5177e | 686 | #endif |
ef5d3ae1 | 687 | |
35379308 JB |
688 | /* Data lookups between C and Scheme |
689 | ||
690 | Look up a symbol with a given name, and return the object to which | |
691 | it is bound. gh_lookup examines the Guile top level, and | |
692 | gh_module_lookup checks the module namespace specified by the | |
693 | `vec' argument. | |
694 | ||
695 | The return value is the Scheme object to which SNAME is bound, or | |
07de6c47 MV |
696 | SCM_UNDEFINED if SNAME is not bound in the given context. |
697 | */ | |
35379308 JB |
698 | |
699 | SCM | |
bcee10dd | 700 | gh_lookup (const char *sname) |
35379308 | 701 | { |
abc235ad | 702 | return gh_module_lookup (scm_current_module (), sname); |
35379308 JB |
703 | } |
704 | ||
abc235ad | 705 | |
35379308 | 706 | SCM |
abc235ad MV |
707 | gh_module_lookup (SCM module, const char *sname) |
708 | #define FUNC_NAME "gh_module_lookup" | |
35379308 | 709 | { |
86d31dfe | 710 | SCM sym, var; |
abc235ad MV |
711 | |
712 | SCM_VALIDATE_MODULE (SCM_ARG1, module); | |
713 | ||
714 | sym = gh_symbol2scm (sname); | |
86d31dfe MV |
715 | var = scm_sym2var (sym, scm_module_lookup_closure (module), SCM_BOOL_F); |
716 | if (var != SCM_BOOL_F) | |
717 | return SCM_VARIABLE_REF (var); | |
35379308 JB |
718 | else |
719 | return SCM_UNDEFINED; | |
720 | } | |
abc235ad | 721 | #undef FUNC_NAME |
89e00824 ML |
722 | |
723 | /* | |
724 | Local Variables: | |
725 | c-file-style: "gnu" | |
726 | End: | |
727 | */ |