Commit | Line | Data |
---|---|---|
b9ad392e | 1 | /* Copyright (C) 1995,1996,1998,1999,2000,2001,2002, 2003 Free Software Foundation, Inc. |
0f2d19dd | 2 | * |
73be1d9e MV |
3 | * This library is free software; you can redistribute it and/or |
4 | * modify it under the terms of the GNU Lesser General Public | |
5 | * License as published by the Free Software Foundation; either | |
6 | * version 2.1 of the License, or (at your option) any later version. | |
0f2d19dd | 7 | * |
73be1d9e MV |
8 | * This library is distributed in the hope that it will be useful, |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 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 | |
92205699 | 15 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
73be1d9e | 16 | */ |
1bbd0b84 | 17 | |
1bbd0b84 | 18 | |
0f2d19dd JB |
19 | \f |
20 | ||
c986274f RB |
21 | #if HAVE_CONFIG_H |
22 | # include <config.h> | |
23 | #endif | |
24 | ||
a0599745 | 25 | #include "libguile/_scm.h" |
681b9005 MD |
26 | |
27 | #include <stdio.h> | |
28 | #ifdef HAVE_UNISTD_H | |
29 | #include <unistd.h> | |
30 | #endif | |
31 | ||
a0599745 MD |
32 | #include "libguile/unif.h" |
33 | #include "libguile/eval.h" | |
34 | #include "libguile/ports.h" | |
35 | #include "libguile/read.h" | |
36 | #include "libguile/root.h" | |
37 | #include "libguile/strings.h" | |
07bcf91d | 38 | #include "libguile/modules.h" |
fe78b6c0 | 39 | #include "libguile/validate.h" |
ca13a04a | 40 | #include "libguile/deprecation.h" |
20e6290e | 41 | |
a0599745 | 42 | #include "libguile/strports.h" |
0f2d19dd | 43 | |
95b88819 GH |
44 | #ifdef HAVE_STRING_H |
45 | #include <string.h> | |
46 | #endif | |
47 | ||
0f2d19dd JB |
48 | \f |
49 | ||
50 | /* {Ports - string ports} | |
51 | * | |
52 | */ | |
53 | ||
3fe6190f | 54 | /* NOTES: |
cc95e00a MV |
55 | |
56 | We break the rules set forth by strings.h about accessing the | |
57 | internals of strings here. We can do this since we can guarantee | |
58 | that the string used as pt->stream is not in use by anyone else. | |
59 | Thus, it's representation will not change asynchronously. | |
60 | ||
61 | (Ports aren't thread-safe yet anyway...) | |
62 | ||
3fe6190f GH |
63 | write_buf/write_end point to the ends of the allocated string. |
64 | read_buf/read_end in principle point to the part of the string which | |
65 | has been written to, but this is only updated after a flush. | |
66 | read_pos and write_pos in principle should be equal, but this is only true | |
61e452ba | 67 | when rw_active is SCM_PORT_NEITHER. |
3fe6190f | 68 | */ |
1cc91f1b | 69 | |
92c2555f | 70 | scm_t_bits scm_tc16_strport; |
a98bddfd DH |
71 | |
72 | ||
ee149d03 JB |
73 | static int |
74 | stfill_buffer (SCM port) | |
0f2d19dd | 75 | { |
92c2555f | 76 | scm_t_port *pt = SCM_PTAB_ENTRY (port); |
ee149d03 | 77 | |
ee149d03 JB |
78 | if (pt->read_pos >= pt->read_end) |
79 | return EOF; | |
80 | else | |
41b0806d | 81 | return scm_return_first_int (*pt->read_pos, port); |
0f2d19dd JB |
82 | } |
83 | ||
3fe6190f GH |
84 | /* change the size of a port's string to new_size. this doesn't |
85 | change read_buf_size. */ | |
754c9491 | 86 | static void |
92c2555f | 87 | st_resize_port (scm_t_port *pt, off_t new_size) |
754c9491 | 88 | { |
94115ae3 | 89 | SCM old_stream = SCM_PACK (pt->stream); |
cc95e00a MV |
90 | const char *src = scm_i_string_chars (old_stream); |
91 | char *dst; | |
92 | SCM new_stream = scm_i_make_string (new_size, &dst); | |
93 | unsigned long int old_size = scm_i_string_length (old_stream); | |
c014a02e ML |
94 | unsigned long int min_size = min (old_size, new_size); |
95 | unsigned long int i; | |
74a16888 | 96 | |
3fe6190f GH |
97 | off_t index = pt->write_pos - pt->write_buf; |
98 | ||
99 | pt->write_buf_size = new_size; | |
100 | ||
94115ae3 | 101 | for (i = 0; i != min_size; ++i) |
cc95e00a | 102 | dst[i] = src[i]; |
8824ac88 MV |
103 | |
104 | scm_remember_upto_here_1 (old_stream); | |
754c9491 | 105 | |
94115ae3 | 106 | /* reset buffer. */ |
754c9491 | 107 | { |
729dbac3 | 108 | pt->stream = SCM_UNPACK (new_stream); |
5a6d139b | 109 | pt->read_buf = pt->write_buf = (unsigned char *)dst; |
3fe6190f GH |
110 | pt->read_pos = pt->write_pos = pt->write_buf + index; |
111 | pt->write_end = pt->write_buf + pt->write_buf_size; | |
112 | pt->read_end = pt->read_buf + pt->read_buf_size; | |
754c9491 JB |
113 | } |
114 | } | |
115 | ||
3fe6190f GH |
116 | /* amount by which write_buf is expanded. */ |
117 | #define SCM_WRITE_BLOCK 80 | |
118 | ||
119 | /* ensure that write_pos < write_end by enlarging the buffer when | |
120 | necessary. update read_buf to account for written chars. */ | |
ee149d03 JB |
121 | static void |
122 | st_flush (SCM port) | |
0f2d19dd | 123 | { |
92c2555f | 124 | scm_t_port *pt = SCM_PTAB_ENTRY (port); |
ee149d03 JB |
125 | |
126 | if (pt->write_pos == pt->write_end) | |
127 | { | |
3fe6190f | 128 | st_resize_port (pt, pt->write_buf_size + SCM_WRITE_BLOCK); |
754c9491 JB |
129 | } |
130 | pt->read_pos = pt->write_pos; | |
3fe6190f GH |
131 | if (pt->read_pos > pt->read_end) |
132 | { | |
133 | pt->read_end = (unsigned char *) pt->read_pos; | |
134 | pt->read_buf_size = pt->read_end - pt->read_buf; | |
135 | } | |
61e452ba | 136 | pt->rw_active = SCM_PORT_NEITHER; |
754c9491 JB |
137 | } |
138 | ||
31703ab8 | 139 | static void |
8aa011a1 | 140 | st_write (SCM port, const void *data, size_t size) |
31703ab8 | 141 | { |
92c2555f | 142 | scm_t_port *pt = SCM_PTAB_ENTRY (port); |
31703ab8 GH |
143 | const char *input = (char *) data; |
144 | ||
145 | while (size > 0) | |
146 | { | |
147 | int space = pt->write_end - pt->write_pos; | |
148 | int write_len = (size > space) ? space : size; | |
149 | ||
4b8ec619 | 150 | memcpy ((char *) pt->write_pos, input, write_len); |
31703ab8 GH |
151 | pt->write_pos += write_len; |
152 | size -= write_len; | |
153 | input += write_len; | |
154 | if (write_len == space) | |
155 | st_flush (port); | |
156 | } | |
157 | } | |
158 | ||
754c9491 | 159 | static void |
affc96b5 | 160 | st_end_input (SCM port, int offset) |
754c9491 | 161 | { |
92c2555f | 162 | scm_t_port *pt = SCM_PTAB_ENTRY (port); |
7dcb364d | 163 | |
cd19d608 GH |
164 | if (pt->read_pos - pt->read_buf < offset) |
165 | scm_misc_error ("st_end_input", "negative position", SCM_EOL); | |
166 | ||
a3c8b9fc | 167 | pt->write_pos = (unsigned char *) (pt->read_pos = pt->read_pos - offset); |
61e452ba | 168 | pt->rw_active = SCM_PORT_NEITHER; |
754c9491 JB |
169 | } |
170 | ||
171 | static off_t | |
172 | st_seek (SCM port, off_t offset, int whence) | |
173 | { | |
92c2555f | 174 | scm_t_port *pt = SCM_PTAB_ENTRY (port); |
754c9491 JB |
175 | off_t target; |
176 | ||
7dcb364d GH |
177 | if (pt->rw_active == SCM_PORT_READ && offset == 0 && whence == SEEK_CUR) |
178 | /* special case to avoid disturbing the unread-char buffer. */ | |
754c9491 | 179 | { |
7dcb364d GH |
180 | if (pt->read_buf == pt->putback_buf) |
181 | { | |
182 | target = pt->saved_read_pos - pt->saved_read_buf | |
183 | - (pt->read_end - pt->read_pos); | |
184 | } | |
185 | else | |
186 | { | |
187 | target = pt->read_pos - pt->read_buf; | |
188 | } | |
754c9491 | 189 | } |
7dcb364d GH |
190 | else |
191 | /* all other cases. */ | |
754c9491 | 192 | { |
7dcb364d GH |
193 | if (pt->rw_active == SCM_PORT_WRITE) |
194 | st_flush (port); | |
195 | ||
196 | if (pt->rw_active == SCM_PORT_READ) | |
197 | scm_end_input (port); | |
198 | ||
199 | switch (whence) | |
200 | { | |
201 | case SEEK_CUR: | |
202 | target = pt->read_pos - pt->read_buf + offset; | |
203 | break; | |
204 | case SEEK_END: | |
205 | target = pt->read_end - pt->read_buf + offset; | |
206 | break; | |
207 | default: /* SEEK_SET */ | |
208 | target = offset; | |
209 | break; | |
210 | } | |
211 | ||
212 | if (target < 0) | |
213 | scm_misc_error ("st_seek", "negative offset", SCM_EOL); | |
214 | ||
215 | if (target >= pt->write_buf_size) | |
3fe6190f | 216 | { |
206d3de3 | 217 | if (!(SCM_CELL_WORD_0 (port) & SCM_WRTNG)) |
3fe6190f | 218 | { |
7dcb364d GH |
219 | if (target > pt->write_buf_size) |
220 | { | |
221 | scm_misc_error ("st_seek", | |
222 | "seek past end of read-only strport", | |
223 | SCM_EOL); | |
224 | } | |
225 | } | |
226 | else | |
227 | { | |
228 | st_resize_port (pt, target + (target == pt->write_buf_size | |
229 | ? SCM_WRITE_BLOCK | |
230 | : 0)); | |
3fe6190f GH |
231 | } |
232 | } | |
7dcb364d GH |
233 | pt->read_pos = pt->write_pos = pt->read_buf + target; |
234 | if (pt->read_pos > pt->read_end) | |
3fe6190f | 235 | { |
7dcb364d GH |
236 | pt->read_end = (unsigned char *) pt->read_pos; |
237 | pt->read_buf_size = pt->read_end - pt->read_buf; | |
3fe6190f | 238 | } |
ee149d03 | 239 | } |
754c9491 JB |
240 | return target; |
241 | } | |
242 | ||
243 | static void | |
affc96b5 | 244 | st_truncate (SCM port, off_t length) |
754c9491 | 245 | { |
92c2555f | 246 | scm_t_port *pt = SCM_PTAB_ENTRY (port); |
3fe6190f GH |
247 | |
248 | if (length > pt->write_buf_size) | |
249 | st_resize_port (pt, length); | |
250 | ||
251 | pt->read_buf_size = length; | |
252 | pt->read_end = pt->read_buf + length; | |
253 | if (pt->read_pos > pt->read_end) | |
254 | pt->read_pos = pt->read_end; | |
754c9491 | 255 | |
3fe6190f GH |
256 | if (pt->write_pos > pt->read_end) |
257 | pt->write_pos = pt->read_end; | |
0f2d19dd JB |
258 | } |
259 | ||
0f2d19dd | 260 | SCM |
1bbd0b84 | 261 | scm_mkstrport (SCM pos, SCM str, long modes, const char *caller) |
0f2d19dd JB |
262 | { |
263 | SCM z; | |
92c2555f | 264 | scm_t_port *pt; |
e11e83f3 | 265 | size_t str_len, c_pos; |
754c9491 | 266 | |
cc95e00a MV |
267 | SCM_ASSERT (scm_is_string (str), str, SCM_ARG1, caller); |
268 | ||
269 | str_len = scm_i_string_length (str); | |
e11e83f3 MV |
270 | c_pos = scm_to_unsigned_integer (pos, 0, str_len); |
271 | ||
754c9491 JB |
272 | if (!((modes & SCM_WRTNG) || (modes & SCM_RDNG))) |
273 | scm_misc_error ("scm_mkstrport", "port must read or write", SCM_EOL); | |
5f16b897 | 274 | |
cc95e00a MV |
275 | /* XXX |
276 | ||
277 | Make a new string to isolate us from changes to the original. | |
278 | This is done so that we can rely on scm_i_string_chars to stay in | |
279 | place even across SCM_TICKs. | |
280 | ||
281 | Additionally, when we are going to write to the string, we make a | |
282 | copy so that we can write to it without having to use | |
283 | scm_i_string_writable_chars. | |
284 | */ | |
285 | ||
286 | if (modes & SCM_WRTNG) | |
287 | str = scm_c_substring_copy (str, 0, str_len); | |
288 | else | |
289 | str = scm_c_substring (str, 0, str_len); | |
290 | ||
9de87eea | 291 | scm_i_scm_pthread_mutex_lock (&scm_i_port_table_mutex); |
da220f27 HWN |
292 | z = scm_new_port_table_entry (scm_tc16_strport); |
293 | pt = SCM_PTAB_ENTRY(z); | |
74a16888 | 294 | SCM_SETSTREAM (z, SCM_UNPACK (str)); |
da220f27 | 295 | SCM_SET_CELL_TYPE(z, scm_tc16_strport|modes); |
cc95e00a | 296 | /* see above why we can use scm_i_string_chars here. */ |
5a6d139b | 297 | pt->write_buf = pt->read_buf = (unsigned char *) scm_i_string_chars (str); |
e11e83f3 | 298 | pt->read_pos = pt->write_pos = pt->read_buf + c_pos; |
754c9491 JB |
299 | pt->write_buf_size = pt->read_buf_size = str_len; |
300 | pt->write_end = pt->read_end = pt->read_buf + pt->read_buf_size; | |
3fe6190f | 301 | |
0de97b83 | 302 | pt->rw_random = 1; |
3fe6190f | 303 | |
9de87eea | 304 | scm_i_pthread_mutex_unlock (&scm_i_port_table_mutex); |
3fe6190f GH |
305 | |
306 | /* ensure write_pos is writable. */ | |
754c9491 JB |
307 | if ((modes & SCM_WRTNG) && pt->write_pos == pt->write_end) |
308 | st_flush (z); | |
0f2d19dd JB |
309 | return z; |
310 | } | |
311 | ||
3fe6190f GH |
312 | /* create a new string from a string port's buffer. */ |
313 | SCM scm_strport_to_string (SCM port) | |
314 | { | |
92c2555f | 315 | scm_t_port *pt = SCM_PTAB_ENTRY (port); |
36284627 | 316 | SCM str; |
cc95e00a MV |
317 | char *dst; |
318 | ||
3fe6190f GH |
319 | if (pt->rw_active == SCM_PORT_WRITE) |
320 | st_flush (port); | |
36284627 | 321 | |
cc95e00a MV |
322 | str = scm_i_make_string (pt->read_buf_size, &dst); |
323 | memcpy (dst, (char *) pt->read_buf, pt->read_buf_size); | |
36284627 DH |
324 | scm_remember_upto_here_1 (port); |
325 | return str; | |
3fe6190f GH |
326 | } |
327 | ||
fe78b6c0 KN |
328 | SCM_DEFINE (scm_object_to_string, "object->string", 1, 1, 0, |
329 | (SCM obj, SCM printer), | |
330 | "Return a Scheme string obtained by printing @var{obj}.\n" | |
331 | "Printing function can be specified by the optional second\n" | |
332 | "argument @var{printer} (default: @code{write}).") | |
1f3908c4 KN |
333 | #define FUNC_NAME s_scm_object_to_string |
334 | { | |
fe78b6c0 KN |
335 | SCM str, port; |
336 | ||
337 | if (!SCM_UNBNDP (printer)) | |
338 | SCM_VALIDATE_PROC (2, printer); | |
1f3908c4 | 339 | |
cc95e00a | 340 | str = scm_c_make_string (0, SCM_UNDEFINED); |
1a92274c | 341 | port = scm_mkstrport (SCM_INUM0, str, SCM_OPN | SCM_WRTNG, FUNC_NAME); |
fe78b6c0 KN |
342 | |
343 | if (SCM_UNBNDP (printer)) | |
344 | scm_write (obj, port); | |
345 | else | |
fdc28395 | 346 | scm_call_2 (printer, obj, port); |
fe78b6c0 | 347 | |
1f3908c4 KN |
348 | return scm_strport_to_string (port); |
349 | } | |
350 | #undef FUNC_NAME | |
351 | ||
3b3b36dd | 352 | SCM_DEFINE (scm_call_with_output_string, "call-with-output-string", 1, 0, 0, |
1bbd0b84 | 353 | (SCM proc), |
b380b885 MD |
354 | "Calls the one-argument procedure @var{proc} with a newly created output\n" |
355 | "port. When the function returns, the string composed of the characters\n" | |
356 | "written into the port is returned.") | |
1bbd0b84 | 357 | #define FUNC_NAME s_scm_call_with_output_string |
0f2d19dd JB |
358 | { |
359 | SCM p; | |
754c9491 JB |
360 | |
361 | p = scm_mkstrport (SCM_INUM0, | |
362 | scm_make_string (SCM_INUM0, SCM_UNDEFINED), | |
363 | SCM_OPN | SCM_WRTNG, | |
1bbd0b84 | 364 | FUNC_NAME); |
fdc28395 | 365 | scm_call_1 (proc, p); |
3fe6190f | 366 | |
184b85a3 | 367 | return scm_get_output_string (p); |
0f2d19dd | 368 | } |
1bbd0b84 | 369 | #undef FUNC_NAME |
0f2d19dd | 370 | |
3b3b36dd | 371 | SCM_DEFINE (scm_call_with_input_string, "call-with-input-string", 2, 0, 0, |
1e6808ea MG |
372 | (SCM string, SCM proc), |
373 | "Calls the one-argument procedure @var{proc} with a newly\n" | |
374 | "created input port from which @var{string}'s contents may be\n" | |
375 | "read. The value yielded by the @var{proc} is returned.") | |
1bbd0b84 | 376 | #define FUNC_NAME s_scm_call_with_input_string |
0f2d19dd | 377 | { |
1e6808ea | 378 | SCM p = scm_mkstrport(SCM_INUM0, string, SCM_OPN | SCM_RDNG, FUNC_NAME); |
fdc28395 | 379 | return scm_call_1 (proc, p); |
0f2d19dd | 380 | } |
1bbd0b84 | 381 | #undef FUNC_NAME |
0f2d19dd | 382 | |
e87a03fc MG |
383 | SCM_DEFINE (scm_open_input_string, "open-input-string", 1, 0, 0, |
384 | (SCM str), | |
1e6808ea MG |
385 | "Take a string and return an input port that delivers characters\n" |
386 | "from the string. The port can be closed by\n" | |
e87a03fc MG |
387 | "@code{close-input-port}, though its storage will be reclaimed\n" |
388 | "by the garbage collector if it becomes inaccessible.") | |
389 | #define FUNC_NAME s_scm_open_input_string | |
390 | { | |
391 | SCM p = scm_mkstrport(SCM_INUM0, str, SCM_OPN | SCM_RDNG, FUNC_NAME); | |
392 | return p; | |
393 | } | |
394 | #undef FUNC_NAME | |
395 | ||
396 | SCM_DEFINE (scm_open_output_string, "open-output-string", 0, 0, 0, | |
397 | (void), | |
1e6808ea | 398 | "Return an output port that will accumulate characters for\n" |
e87a03fc MG |
399 | "retrieval by @code{get-output-string}. The port can be closed\n" |
400 | "by the procedure @code{close-output-port}, though its storage\n" | |
401 | "will be reclaimed by the garbage collector if it becomes\n" | |
402 | "inaccessible.") | |
403 | #define FUNC_NAME s_scm_open_output_string | |
404 | { | |
405 | SCM p; | |
406 | ||
407 | p = scm_mkstrport (SCM_INUM0, | |
408 | scm_make_string (SCM_INUM0, SCM_UNDEFINED), | |
409 | SCM_OPN | SCM_WRTNG, | |
410 | FUNC_NAME); | |
411 | return p; | |
412 | } | |
413 | #undef FUNC_NAME | |
414 | ||
415 | SCM_DEFINE (scm_get_output_string, "get-output-string", 1, 0, 0, | |
416 | (SCM port), | |
417 | "Given an output port created by @code{open-output-string},\n" | |
1e6808ea | 418 | "return a string consisting of the characters that have been\n" |
e87a03fc MG |
419 | "output to the port so far.") |
420 | #define FUNC_NAME s_scm_get_output_string | |
421 | { | |
422 | SCM_VALIDATE_OPOUTSTRPORT (1, port); | |
423 | return scm_strport_to_string (port); | |
424 | } | |
425 | #undef FUNC_NAME | |
1cc91f1b | 426 | |
cd07a097 | 427 | |
a8aa30d8 MD |
428 | /* Given a null-terminated string EXPR containing a Scheme expression |
429 | read it, and return it as an SCM value. */ | |
430 | SCM | |
ca13a04a | 431 | scm_c_read_string (const char *expr) |
a8aa30d8 | 432 | { |
3fe6190f | 433 | SCM port = scm_mkstrport (SCM_INUM0, |
cc95e00a | 434 | scm_from_locale_string (expr), |
a8aa30d8 | 435 | SCM_OPN | SCM_RDNG, |
ca13a04a | 436 | "scm_c_read_string"); |
a8aa30d8 MD |
437 | SCM form; |
438 | ||
439 | /* Read expressions from that port; ignore the values. */ | |
deca31e1 | 440 | form = scm_read (port); |
a8aa30d8 MD |
441 | |
442 | scm_close_port (port); | |
443 | return form; | |
444 | } | |
445 | ||
cd07a097 | 446 | /* Given a null-terminated string EXPR containing Scheme program text, |
a8aa30d8 MD |
447 | evaluate it, and return the result of the last expression evaluated. */ |
448 | SCM | |
ca13a04a | 449 | scm_c_eval_string (const char *expr) |
cd07a097 | 450 | { |
cc95e00a | 451 | return scm_eval_string (scm_from_locale_string (expr)); |
b377f53e JB |
452 | } |
453 | ||
209b52fe MV |
454 | SCM |
455 | scm_c_eval_string_in_module (const char *expr, SCM module) | |
456 | { | |
cc95e00a | 457 | return scm_eval_string_in_module (scm_from_locale_string (expr), module); |
209b52fe MV |
458 | } |
459 | ||
460 | ||
96e83482 MV |
461 | static SCM |
462 | inner_eval_string (void *data) | |
b377f53e | 463 | { |
96e83482 | 464 | SCM port = (SCM)data; |
cd07a097 | 465 | SCM form; |
b377f53e | 466 | SCM ans = SCM_UNSPECIFIED; |
cd07a097 JB |
467 | |
468 | /* Read expressions from that port; ignore the values. */ | |
0c32d76c | 469 | while (!SCM_EOF_OBJECT_P (form = scm_read (port))) |
96e83482 | 470 | ans = scm_primitive_eval_x (form); |
cd07a097 | 471 | |
0d7368d7 JB |
472 | /* Don't close the port here; if we re-enter this function via a |
473 | continuation, then the next time we enter it, we'll get an error. | |
474 | It's a string port anyway, so there's no advantage to closing it | |
475 | early. */ | |
476 | ||
a8aa30d8 | 477 | return ans; |
cd07a097 | 478 | } |
96e83482 | 479 | |
209b52fe MV |
480 | SCM_DEFINE (scm_eval_string_in_module, "eval-string", 1, 1, 0, |
481 | (SCM string, SCM module), | |
96e83482 MV |
482 | "Evaluate @var{string} as the text representation of a Scheme\n" |
483 | "form or forms, and return whatever value they produce.\n" | |
209b52fe MV |
484 | "Evaluation takes place in the given module, or the current\n" |
485 | "module when no module is given.\n" | |
486 | "While the code is evaluated, the given module is made the\n" | |
487 | "current one. The current module is restored when this\n" | |
488 | "procedure returns.") | |
489 | #define FUNC_NAME s_scm_eval_string_in_module | |
96e83482 MV |
490 | { |
491 | SCM port = scm_mkstrport (SCM_INUM0, string, SCM_OPN | SCM_RDNG, | |
209b52fe MV |
492 | FUNC_NAME); |
493 | if (SCM_UNBNDP (module)) | |
494 | module = scm_current_module (); | |
aeec5be1 MV |
495 | else |
496 | SCM_VALIDATE_MODULE (2, module); | |
209b52fe | 497 | return scm_c_call_with_current_module (module, |
96e83482 MV |
498 | inner_eval_string, (void *)port); |
499 | } | |
1bbd0b84 | 500 | #undef FUNC_NAME |
cd07a097 | 501 | |
209b52fe MV |
502 | SCM |
503 | scm_eval_string (SCM string) | |
504 | { | |
505 | return scm_eval_string_in_module (string, SCM_UNDEFINED); | |
506 | } | |
507 | ||
92c2555f | 508 | static scm_t_bits |
0b6881fa | 509 | scm_make_stptob () |
0f2d19dd | 510 | { |
92c2555f | 511 | scm_t_bits tc = scm_make_port_type ("string", stfill_buffer, st_write); |
a98bddfd | 512 | |
6c747373 | 513 | scm_set_port_mark (tc, scm_markstream); |
affc96b5 GH |
514 | scm_set_port_end_input (tc, st_end_input); |
515 | scm_set_port_flush (tc, st_flush); | |
6c747373 | 516 | scm_set_port_seek (tc, st_seek); |
affc96b5 | 517 | scm_set_port_truncate (tc, st_truncate); |
a98bddfd DH |
518 | |
519 | return tc; | |
0f2d19dd JB |
520 | } |
521 | ||
0f2d19dd JB |
522 | void |
523 | scm_init_strports () | |
0f2d19dd | 524 | { |
a98bddfd DH |
525 | scm_tc16_strport = scm_make_stptob (); |
526 | ||
a0599745 | 527 | #include "libguile/strports.x" |
0f2d19dd JB |
528 | } |
529 | ||
89e00824 ML |
530 | |
531 | /* | |
532 | Local Variables: | |
533 | c-file-style: "gnu" | |
534 | End: | |
535 | */ |