Commit | Line | Data |
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478848cb | 1 | /* Copyright (C) 1995, 1996, 1998, 1999, 2000, 2001, 2002, 2003, 2005, 2006, |
475772ea | 2 | * 2009, 2010, 2011, 2012, 2013, 2014 Free Software Foundation, Inc. |
478848cb | 3 | * |
73be1d9e | 4 | * This library is free software; you can redistribute it and/or |
53befeb7 NJ |
5 | * modify it under the terms of the GNU Lesser General Public License |
6 | * as published by the Free Software Foundation; either version 3 of | |
7 | * the License, or (at your option) any later version. | |
0f2d19dd | 8 | * |
53befeb7 NJ |
9 | * This library is distributed in the hope that it will be useful, but |
10 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
73be1d9e MV |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | * Lesser General Public License for more details. | |
0f2d19dd | 13 | * |
73be1d9e MV |
14 | * You should have received a copy of the GNU Lesser General Public |
15 | * License along with this library; if not, write to the Free Software | |
53befeb7 NJ |
16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
17 | * 02110-1301 USA | |
73be1d9e | 18 | */ |
1bbd0b84 | 19 | |
1bbd0b84 | 20 | |
0f2d19dd JB |
21 | \f |
22 | ||
dbb605f5 | 23 | #ifdef HAVE_CONFIG_H |
c986274f RB |
24 | # include <config.h> |
25 | #endif | |
26 | ||
a0599745 | 27 | #include "libguile/_scm.h" |
681b9005 MD |
28 | |
29 | #include <stdio.h> | |
681b9005 | 30 | #include <unistd.h> |
681b9005 | 31 | |
691fcf66 | 32 | #include "libguile/bytevectors.h" |
a0599745 MD |
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" |
889975e5 | 41 | #include "libguile/srfi-4.h" |
20e6290e | 42 | |
a0599745 | 43 | #include "libguile/strports.h" |
0f2d19dd | 44 | |
95b88819 GH |
45 | #ifdef HAVE_STRING_H |
46 | #include <string.h> | |
47 | #endif | |
48 | ||
0f2d19dd JB |
49 | \f |
50 | ||
51 | /* {Ports - string ports} | |
52 | * | |
53 | */ | |
54 | ||
3fe6190f | 55 | /* NOTES: |
cc95e00a | 56 | |
691fcf66 | 57 | write_buf/write_end point to the ends of the allocated bytevector. |
ca2ec018 AW |
58 | read_buf/read_end point to the part of the bytevector which has been |
59 | written to. read_pos and write_pos are always equal. | |
bf5ad0da KR |
60 | |
61 | ENHANCE-ME - output blocks: | |
62 | ||
63 | The current code keeps an output string as a single block. That means | |
64 | when the size is increased the entire old contents must be copied. It'd | |
65 | be more efficient to begin a new block when the old one is full, so | |
66 | there's no re-copying of previous data. | |
67 | ||
68 | To make seeking efficient, keeping the pieces in a vector might be best, | |
69 | though appending is probably the most common operation. The size of each | |
70 | block could be progressively increased, so the bigger the string the | |
71 | bigger the blocks. | |
72 | ||
73 | When `get-output-string' is called the blocks have to be coalesced into a | |
74 | string, the result could be kept as a single big block. If blocks were | |
75 | strings then `get-output-string' could notice when there's just one and | |
76 | return that with a copy-on-write (though repeated calls to | |
77 | `get-output-string' are probably unlikely). | |
78 | ||
79 | Another possibility would be to extend the port mechanism to let SCM | |
80 | strings come through directly from `display' and friends. That way if a | |
81 | big string is written it can be kept as a copy-on-write, saving time | |
82 | copying and maybe saving some space. */ | |
83 | ||
1cc91f1b | 84 | |
92c2555f | 85 | scm_t_bits scm_tc16_strport; |
a98bddfd DH |
86 | |
87 | ||
ee149d03 | 88 | static int |
ca2ec018 | 89 | st_fill_input (SCM port) |
0f2d19dd | 90 | { |
92c2555f | 91 | scm_t_port *pt = SCM_PTAB_ENTRY (port); |
ee149d03 | 92 | |
ee149d03 JB |
93 | if (pt->read_pos >= pt->read_end) |
94 | return EOF; | |
95 | else | |
ca2ec018 | 96 | return *pt->read_pos; |
0f2d19dd JB |
97 | } |
98 | ||
691fcf66 LC |
99 | /* Change the size of a port's bytevector to NEW_SIZE. This doesn't |
100 | change `read_buf_size'. */ | |
101 | static void | |
f1ce9199 | 102 | st_resize_port (scm_t_port *pt, scm_t_off new_size) |
754c9491 | 103 | { |
94115ae3 | 104 | SCM old_stream = SCM_PACK (pt->stream); |
691fcf66 LC |
105 | const signed char *src = SCM_BYTEVECTOR_CONTENTS (old_stream); |
106 | SCM new_stream = scm_c_make_bytevector (new_size); | |
107 | signed char *dst = SCM_BYTEVECTOR_CONTENTS (new_stream); | |
108 | unsigned long int old_size = SCM_BYTEVECTOR_LENGTH (old_stream); | |
c014a02e | 109 | unsigned long int min_size = min (old_size, new_size); |
74a16888 | 110 | |
ca2ec018 | 111 | scm_t_off offset = pt->write_pos - pt->write_buf; |
3fe6190f GH |
112 | |
113 | pt->write_buf_size = new_size; | |
114 | ||
691fcf66 | 115 | memcpy (dst, src, min_size); |
8824ac88 MV |
116 | |
117 | scm_remember_upto_here_1 (old_stream); | |
754c9491 | 118 | |
94115ae3 | 119 | /* reset buffer. */ |
754c9491 | 120 | { |
729dbac3 | 121 | pt->stream = SCM_UNPACK (new_stream); |
5a6d139b | 122 | pt->read_buf = pt->write_buf = (unsigned char *)dst; |
ca2ec018 | 123 | pt->read_pos = pt->write_pos = pt->write_buf + offset; |
3fe6190f GH |
124 | pt->write_end = pt->write_buf + pt->write_buf_size; |
125 | pt->read_end = pt->read_buf + pt->read_buf_size; | |
754c9491 JB |
126 | } |
127 | } | |
128 | ||
ee149d03 | 129 | static void |
ca2ec018 | 130 | st_write (SCM port, const void *data, size_t size) |
0f2d19dd | 131 | { |
92c2555f | 132 | scm_t_port *pt = SCM_PTAB_ENTRY (port); |
ee149d03 | 133 | |
ca2ec018 AW |
134 | if (size > pt->write_end - pt->write_pos) |
135 | st_resize_port (pt, max (pt->write_buf_size * 2, | |
136 | pt->write_end - pt->write_pos + size)); | |
137 | ||
138 | memcpy ((char *) pt->write_pos, data, size); | |
139 | pt->read_pos = (pt->write_pos += size); | |
d8f1c216 | 140 | |
3fe6190f GH |
141 | if (pt->read_pos > pt->read_end) |
142 | { | |
143 | pt->read_end = (unsigned char *) pt->read_pos; | |
144 | pt->read_buf_size = pt->read_end - pt->read_buf; | |
145 | } | |
31703ab8 GH |
146 | } |
147 | ||
754c9491 | 148 | static void |
affc96b5 | 149 | st_end_input (SCM port, int offset) |
754c9491 | 150 | { |
92c2555f | 151 | scm_t_port *pt = SCM_PTAB_ENTRY (port); |
7dcb364d | 152 | |
cd19d608 GH |
153 | if (pt->read_pos - pt->read_buf < offset) |
154 | scm_misc_error ("st_end_input", "negative position", SCM_EOL); | |
155 | ||
a3c8b9fc | 156 | pt->write_pos = (unsigned char *) (pt->read_pos = pt->read_pos - offset); |
61e452ba | 157 | pt->rw_active = SCM_PORT_NEITHER; |
754c9491 JB |
158 | } |
159 | ||
f1ce9199 LC |
160 | static scm_t_off |
161 | st_seek (SCM port, scm_t_off offset, int whence) | |
754c9491 | 162 | { |
92c2555f | 163 | scm_t_port *pt = SCM_PTAB_ENTRY (port); |
f1ce9199 | 164 | scm_t_off target; |
754c9491 | 165 | |
7dcb364d GH |
166 | if (pt->rw_active == SCM_PORT_READ && offset == 0 && whence == SEEK_CUR) |
167 | /* special case to avoid disturbing the unread-char buffer. */ | |
754c9491 | 168 | { |
7dcb364d GH |
169 | if (pt->read_buf == pt->putback_buf) |
170 | { | |
171 | target = pt->saved_read_pos - pt->saved_read_buf | |
172 | - (pt->read_end - pt->read_pos); | |
173 | } | |
174 | else | |
175 | { | |
176 | target = pt->read_pos - pt->read_buf; | |
177 | } | |
754c9491 | 178 | } |
7dcb364d GH |
179 | else |
180 | /* all other cases. */ | |
754c9491 | 181 | { |
7dcb364d | 182 | if (pt->rw_active == SCM_PORT_READ) |
4251ae2e | 183 | scm_end_input_unlocked (port); |
7dcb364d | 184 | |
ca2ec018 AW |
185 | pt->rw_active = SCM_PORT_NEITHER; |
186 | ||
7dcb364d GH |
187 | switch (whence) |
188 | { | |
189 | case SEEK_CUR: | |
190 | target = pt->read_pos - pt->read_buf + offset; | |
191 | break; | |
192 | case SEEK_END: | |
193 | target = pt->read_end - pt->read_buf + offset; | |
194 | break; | |
195 | default: /* SEEK_SET */ | |
196 | target = offset; | |
197 | break; | |
198 | } | |
199 | ||
200 | if (target < 0) | |
201 | scm_misc_error ("st_seek", "negative offset", SCM_EOL); | |
202 | ||
203 | if (target >= pt->write_buf_size) | |
3fe6190f | 204 | { |
206d3de3 | 205 | if (!(SCM_CELL_WORD_0 (port) & SCM_WRTNG)) |
3fe6190f | 206 | { |
7dcb364d GH |
207 | if (target > pt->write_buf_size) |
208 | { | |
209 | scm_misc_error ("st_seek", | |
210 | "seek past end of read-only strport", | |
211 | SCM_EOL); | |
212 | } | |
213 | } | |
d8f1c216 LC |
214 | else if (target == pt->write_buf_size) |
215 | st_resize_port (pt, target * 2); | |
3fe6190f | 216 | } |
7dcb364d GH |
217 | pt->read_pos = pt->write_pos = pt->read_buf + target; |
218 | if (pt->read_pos > pt->read_end) | |
3fe6190f | 219 | { |
7dcb364d GH |
220 | pt->read_end = (unsigned char *) pt->read_pos; |
221 | pt->read_buf_size = pt->read_end - pt->read_buf; | |
3fe6190f | 222 | } |
ee149d03 | 223 | } |
754c9491 JB |
224 | return target; |
225 | } | |
226 | ||
227 | static void | |
f1ce9199 | 228 | st_truncate (SCM port, scm_t_off length) |
754c9491 | 229 | { |
92c2555f | 230 | scm_t_port *pt = SCM_PTAB_ENTRY (port); |
3fe6190f GH |
231 | |
232 | if (length > pt->write_buf_size) | |
233 | st_resize_port (pt, length); | |
234 | ||
235 | pt->read_buf_size = length; | |
236 | pt->read_end = pt->read_buf + length; | |
237 | if (pt->read_pos > pt->read_end) | |
ca2ec018 | 238 | pt->read_pos = pt->write_pos = pt->read_end; |
0f2d19dd JB |
239 | } |
240 | ||
0b2c2ba3 LC |
241 | /* The initial size in bytes of a string port's buffer. */ |
242 | #define INITIAL_BUFFER_SIZE 128 | |
243 | ||
244 | /* Return a new string port with MODES. If STR is #f, a new backing | |
245 | buffer is allocated; otherwise STR must be a string and a copy of it | |
246 | serves as the buffer for the new port. */ | |
7b041912 LC |
247 | SCM |
248 | scm_mkstrport (SCM pos, SCM str, long modes, const char *caller) | |
0f2d19dd | 249 | { |
691fcf66 | 250 | SCM z, buf; |
92c2555f | 251 | scm_t_port *pt; |
6dce942c | 252 | size_t read_buf_size, num_bytes, c_byte_pos; |
691fcf66 | 253 | char *c_buf; |
e11e83f3 | 254 | |
754c9491 JB |
255 | if (!((modes & SCM_WRTNG) || (modes & SCM_RDNG))) |
256 | scm_misc_error ("scm_mkstrport", "port must read or write", SCM_EOL); | |
5f16b897 | 257 | |
0b2c2ba3 LC |
258 | if (scm_is_false (str)) |
259 | { | |
260 | /* Allocate a new buffer to write to. */ | |
6dce942c MW |
261 | num_bytes = INITIAL_BUFFER_SIZE; |
262 | buf = scm_c_make_bytevector (num_bytes); | |
0b2c2ba3 LC |
263 | c_buf = (char *) SCM_BYTEVECTOR_CONTENTS (buf); |
264 | ||
265 | /* Reset `read_buf_size'. It will contain the actual number of | |
2721f918 AW |
266 | bytes written to the port. */ |
267 | read_buf_size = 0; | |
6dce942c | 268 | c_byte_pos = 0; |
0b2c2ba3 LC |
269 | } |
270 | else | |
271 | { | |
0b2c2ba3 | 272 | char *copy; |
691fcf66 | 273 | |
0b2c2ba3 | 274 | SCM_ASSERT (scm_is_string (str), str, SCM_ARG1, caller); |
691fcf66 | 275 | |
6dce942c MW |
276 | /* STR is a string. */ |
277 | /* Create a copy of STR in UTF-8. */ | |
278 | copy = scm_to_utf8_stringn (str, &num_bytes); | |
279 | buf = scm_c_make_bytevector (num_bytes); | |
0b2c2ba3 | 280 | c_buf = (char *) SCM_BYTEVECTOR_CONTENTS (buf); |
6dce942c | 281 | memcpy (c_buf, copy, num_bytes); |
0b2c2ba3 | 282 | free (copy); |
691fcf66 | 283 | |
6dce942c MW |
284 | read_buf_size = num_bytes; |
285 | ||
286 | if (scm_is_eq (pos, SCM_INUM0)) | |
287 | c_byte_pos = 0; | |
288 | else | |
289 | /* Inefficient but simple way to convert the character position | |
290 | POS into a byte position C_BYTE_POS. */ | |
291 | free (scm_to_utf8_stringn (scm_substring (str, SCM_INUM0, pos), | |
292 | &c_byte_pos)); | |
0b2c2ba3 | 293 | } |
691fcf66 | 294 | |
2721f918 | 295 | z = scm_c_make_port_with_encoding (scm_tc16_strport, modes, |
6dce942c | 296 | "UTF-8", |
0dd7c540 | 297 | scm_i_default_port_conversion_handler (), |
789dd40b | 298 | SCM_UNPACK (buf)); |
7b041912 | 299 | |
2721f918 | 300 | pt = SCM_PTAB_ENTRY (z); |
03fcf93b | 301 | |
691fcf66 | 302 | pt->write_buf = pt->read_buf = (unsigned char *) c_buf; |
6dce942c | 303 | pt->read_pos = pt->write_pos = pt->read_buf + c_byte_pos; |
2721f918 | 304 | pt->read_buf_size = read_buf_size; |
6dce942c | 305 | pt->write_buf_size = num_bytes; |
754c9491 | 306 | pt->write_end = pt->read_end = pt->read_buf + pt->read_buf_size; |
0de97b83 | 307 | pt->rw_random = 1; |
3fe6190f | 308 | |
0f2d19dd JB |
309 | return z; |
310 | } | |
311 | ||
7b041912 LC |
312 | /* Create a new string from the buffer of PORT, a string port, converting from |
313 | PORT's encoding to the standard string representation. */ | |
314 | SCM | |
315 | scm_strport_to_string (SCM port) | |
3fe6190f | 316 | { |
7b041912 LC |
317 | scm_t_port *pt = SCM_PTAB_ENTRY (port); |
318 | ||
fac32b51 MG |
319 | if (pt->read_buf_size == 0) |
320 | return scm_nullstr; | |
321 | ||
08467a7e | 322 | return scm_from_port_stringn ((char *)pt->read_buf, pt->read_buf_size, port); |
3fe6190f GH |
323 | } |
324 | ||
fe78b6c0 KN |
325 | SCM_DEFINE (scm_object_to_string, "object->string", 1, 1, 0, |
326 | (SCM obj, SCM printer), | |
327 | "Return a Scheme string obtained by printing @var{obj}.\n" | |
328 | "Printing function can be specified by the optional second\n" | |
329 | "argument @var{printer} (default: @code{write}).") | |
1f3908c4 KN |
330 | #define FUNC_NAME s_scm_object_to_string |
331 | { | |
8b263377 | 332 | SCM port, result; |
fe78b6c0 KN |
333 | |
334 | if (!SCM_UNBNDP (printer)) | |
335 | SCM_VALIDATE_PROC (2, printer); | |
1f3908c4 | 336 | |
0b2c2ba3 LC |
337 | port = scm_mkstrport (SCM_INUM0, SCM_BOOL_F, |
338 | SCM_OPN | SCM_WRTNG, FUNC_NAME); | |
fe78b6c0 KN |
339 | |
340 | if (SCM_UNBNDP (printer)) | |
341 | scm_write (obj, port); | |
342 | else | |
fdc28395 | 343 | scm_call_2 (printer, obj, port); |
fe78b6c0 | 344 | |
8b263377 LC |
345 | result = scm_strport_to_string (port); |
346 | ||
347 | /* Explicitly close PORT so that the iconv CDs associated with it are | |
348 | deallocated right away. This is important because CDs use a lot of | |
349 | memory that's not visible to the GC, so not freeing them can lead | |
350 | to almost large heap usage. See | |
351 | <http://wingolog.org/archives/2011/02/25/ports-weaks-gc-and-dark-matter> | |
352 | for details. */ | |
353 | scm_close_port (port); | |
354 | ||
355 | return result; | |
1f3908c4 KN |
356 | } |
357 | #undef FUNC_NAME | |
358 | ||
a62b5c3d AW |
359 | SCM |
360 | scm_call_with_output_string (SCM proc) | |
0f2d19dd | 361 | { |
a62b5c3d | 362 | static SCM var = SCM_BOOL_F; |
754c9491 | 363 | |
a62b5c3d AW |
364 | if (scm_is_false (var)) |
365 | var = scm_c_private_lookup ("guile", "call-with-output-string"); | |
3fe6190f | 366 | |
a62b5c3d | 367 | return scm_call_1 (scm_variable_ref (var), proc); |
0f2d19dd JB |
368 | } |
369 | ||
a62b5c3d AW |
370 | SCM |
371 | scm_call_with_input_string (SCM string, SCM proc) | |
0f2d19dd | 372 | { |
a62b5c3d AW |
373 | static SCM var = SCM_BOOL_F; |
374 | ||
375 | if (scm_is_false (var)) | |
376 | var = scm_c_private_lookup ("guile", "call-with-input-string"); | |
377 | ||
378 | return scm_call_2 (scm_variable_ref (var), string, proc); | |
0f2d19dd JB |
379 | } |
380 | ||
e87a03fc MG |
381 | SCM_DEFINE (scm_open_input_string, "open-input-string", 1, 0, 0, |
382 | (SCM str), | |
1e6808ea MG |
383 | "Take a string and return an input port that delivers characters\n" |
384 | "from the string. The port can be closed by\n" | |
e87a03fc MG |
385 | "@code{close-input-port}, though its storage will be reclaimed\n" |
386 | "by the garbage collector if it becomes inaccessible.") | |
387 | #define FUNC_NAME s_scm_open_input_string | |
388 | { | |
389 | SCM p = scm_mkstrport(SCM_INUM0, str, SCM_OPN | SCM_RDNG, FUNC_NAME); | |
390 | return p; | |
391 | } | |
392 | #undef FUNC_NAME | |
393 | ||
394 | SCM_DEFINE (scm_open_output_string, "open-output-string", 0, 0, 0, | |
395 | (void), | |
1e6808ea | 396 | "Return an output port that will accumulate characters for\n" |
e87a03fc MG |
397 | "retrieval by @code{get-output-string}. The port can be closed\n" |
398 | "by the procedure @code{close-output-port}, though its storage\n" | |
399 | "will be reclaimed by the garbage collector if it becomes\n" | |
400 | "inaccessible.") | |
401 | #define FUNC_NAME s_scm_open_output_string | |
402 | { | |
403 | SCM p; | |
404 | ||
0b2c2ba3 | 405 | p = scm_mkstrport (SCM_INUM0, SCM_BOOL_F, |
e87a03fc MG |
406 | SCM_OPN | SCM_WRTNG, |
407 | FUNC_NAME); | |
408 | return p; | |
409 | } | |
410 | #undef FUNC_NAME | |
411 | ||
412 | SCM_DEFINE (scm_get_output_string, "get-output-string", 1, 0, 0, | |
413 | (SCM port), | |
414 | "Given an output port created by @code{open-output-string},\n" | |
1e6808ea | 415 | "return a string consisting of the characters that have been\n" |
e87a03fc MG |
416 | "output to the port so far.") |
417 | #define FUNC_NAME s_scm_get_output_string | |
418 | { | |
419 | SCM_VALIDATE_OPOUTSTRPORT (1, port); | |
420 | return scm_strport_to_string (port); | |
421 | } | |
422 | #undef FUNC_NAME | |
1cc91f1b | 423 | |
cd07a097 | 424 | |
a8aa30d8 MD |
425 | /* Given a null-terminated string EXPR containing a Scheme expression |
426 | read it, and return it as an SCM value. */ | |
427 | SCM | |
ca13a04a | 428 | scm_c_read_string (const char *expr) |
a8aa30d8 | 429 | { |
3fe6190f | 430 | SCM port = scm_mkstrport (SCM_INUM0, |
cc95e00a | 431 | scm_from_locale_string (expr), |
a8aa30d8 | 432 | SCM_OPN | SCM_RDNG, |
ca13a04a | 433 | "scm_c_read_string"); |
a8aa30d8 MD |
434 | SCM form; |
435 | ||
deca31e1 | 436 | form = scm_read (port); |
a8aa30d8 MD |
437 | |
438 | scm_close_port (port); | |
439 | return form; | |
440 | } | |
441 | ||
cd07a097 | 442 | /* Given a null-terminated string EXPR containing Scheme program text, |
a8aa30d8 MD |
443 | evaluate it, and return the result of the last expression evaluated. */ |
444 | SCM | |
ca13a04a | 445 | scm_c_eval_string (const char *expr) |
cd07a097 | 446 | { |
cc95e00a | 447 | return scm_eval_string (scm_from_locale_string (expr)); |
b377f53e JB |
448 | } |
449 | ||
209b52fe MV |
450 | SCM |
451 | scm_c_eval_string_in_module (const char *expr, SCM module) | |
452 | { | |
cc95e00a | 453 | return scm_eval_string_in_module (scm_from_locale_string (expr), module); |
209b52fe MV |
454 | } |
455 | ||
456 | ||
60617d81 MW |
457 | static SCM eval_string_var; |
458 | static SCM k_module; | |
459 | ||
460 | static void | |
461 | init_eval_string_var_and_k_module (void) | |
462 | { | |
463 | eval_string_var = scm_c_public_variable ("ice-9 eval-string", "eval-string"); | |
464 | k_module = scm_from_locale_keyword ("module"); | |
465 | } | |
466 | ||
209b52fe MV |
467 | SCM_DEFINE (scm_eval_string_in_module, "eval-string", 1, 1, 0, |
468 | (SCM string, SCM module), | |
96e83482 MV |
469 | "Evaluate @var{string} as the text representation of a Scheme\n" |
470 | "form or forms, and return whatever value they produce.\n" | |
209b52fe MV |
471 | "Evaluation takes place in the given module, or the current\n" |
472 | "module when no module is given.\n" | |
473 | "While the code is evaluated, the given module is made the\n" | |
474 | "current one. The current module is restored when this\n" | |
475 | "procedure returns.") | |
476 | #define FUNC_NAME s_scm_eval_string_in_module | |
96e83482 | 477 | { |
60617d81 MW |
478 | static scm_i_pthread_once_t once = SCM_I_PTHREAD_ONCE_INIT; |
479 | scm_i_pthread_once (&once, init_eval_string_var_and_k_module); | |
0b0e066a | 480 | |
209b52fe MV |
481 | if (SCM_UNBNDP (module)) |
482 | module = scm_current_module (); | |
aeec5be1 MV |
483 | else |
484 | SCM_VALIDATE_MODULE (2, module); | |
0b0e066a | 485 | |
60617d81 MW |
486 | return scm_call_3 (scm_variable_ref (eval_string_var), |
487 | string, k_module, module); | |
96e83482 | 488 | } |
1bbd0b84 | 489 | #undef FUNC_NAME |
cd07a097 | 490 | |
209b52fe MV |
491 | SCM |
492 | scm_eval_string (SCM string) | |
493 | { | |
494 | return scm_eval_string_in_module (string, SCM_UNDEFINED); | |
495 | } | |
496 | ||
92c2555f | 497 | static scm_t_bits |
0b6881fa | 498 | scm_make_stptob () |
0f2d19dd | 499 | { |
ca2ec018 | 500 | scm_t_bits tc = scm_make_port_type ("string", st_fill_input, st_write); |
a98bddfd | 501 | |
affc96b5 | 502 | scm_set_port_end_input (tc, st_end_input); |
6c747373 | 503 | scm_set_port_seek (tc, st_seek); |
affc96b5 | 504 | scm_set_port_truncate (tc, st_truncate); |
a98bddfd DH |
505 | |
506 | return tc; | |
0f2d19dd JB |
507 | } |
508 | ||
0f2d19dd JB |
509 | void |
510 | scm_init_strports () | |
0f2d19dd | 511 | { |
a98bddfd DH |
512 | scm_tc16_strport = scm_make_stptob (); |
513 | ||
a0599745 | 514 | #include "libguile/strports.x" |
0f2d19dd JB |
515 | } |
516 | ||
89e00824 ML |
517 | |
518 | /* | |
519 | Local Variables: | |
520 | c-file-style: "gnu" | |
521 | End: | |
522 | */ |