Commit | Line | Data |
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478848cb | 1 | /* Copyright (C) 1995, 1996, 1998, 1999, 2000, 2001, 2002, 2003, 2005, 2006, |
08467a7e | 2 | * 2009, 2010, 2011, 2012, 2013 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> | |
30 | #ifdef HAVE_UNISTD_H | |
31 | #include <unistd.h> | |
32 | #endif | |
33 | ||
691fcf66 | 34 | #include "libguile/bytevectors.h" |
a0599745 MD |
35 | #include "libguile/eval.h" |
36 | #include "libguile/ports.h" | |
37 | #include "libguile/read.h" | |
38 | #include "libguile/root.h" | |
39 | #include "libguile/strings.h" | |
07bcf91d | 40 | #include "libguile/modules.h" |
fe78b6c0 | 41 | #include "libguile/validate.h" |
ca13a04a | 42 | #include "libguile/deprecation.h" |
889975e5 | 43 | #include "libguile/srfi-4.h" |
20e6290e | 44 | |
a0599745 | 45 | #include "libguile/strports.h" |
0f2d19dd | 46 | |
95b88819 GH |
47 | #ifdef HAVE_STRING_H |
48 | #include <string.h> | |
49 | #endif | |
50 | ||
0f2d19dd JB |
51 | \f |
52 | ||
53 | /* {Ports - string ports} | |
54 | * | |
55 | */ | |
56 | ||
3fe6190f | 57 | /* NOTES: |
cc95e00a | 58 | |
691fcf66 | 59 | write_buf/write_end point to the ends of the allocated bytevector. |
ca2ec018 AW |
60 | read_buf/read_end point to the part of the bytevector which has been |
61 | written to. read_pos and write_pos are always equal. | |
bf5ad0da KR |
62 | |
63 | ENHANCE-ME - output blocks: | |
64 | ||
65 | The current code keeps an output string as a single block. That means | |
66 | when the size is increased the entire old contents must be copied. It'd | |
67 | be more efficient to begin a new block when the old one is full, so | |
68 | there's no re-copying of previous data. | |
69 | ||
70 | To make seeking efficient, keeping the pieces in a vector might be best, | |
71 | though appending is probably the most common operation. The size of each | |
72 | block could be progressively increased, so the bigger the string the | |
73 | bigger the blocks. | |
74 | ||
75 | When `get-output-string' is called the blocks have to be coalesced into a | |
76 | string, the result could be kept as a single big block. If blocks were | |
77 | strings then `get-output-string' could notice when there's just one and | |
78 | return that with a copy-on-write (though repeated calls to | |
79 | `get-output-string' are probably unlikely). | |
80 | ||
81 | Another possibility would be to extend the port mechanism to let SCM | |
82 | strings come through directly from `display' and friends. That way if a | |
83 | big string is written it can be kept as a copy-on-write, saving time | |
84 | copying and maybe saving some space. */ | |
85 | ||
1cc91f1b | 86 | |
92c2555f | 87 | scm_t_bits scm_tc16_strport; |
a98bddfd DH |
88 | |
89 | ||
ee149d03 | 90 | static int |
ca2ec018 | 91 | st_fill_input (SCM port) |
0f2d19dd | 92 | { |
92c2555f | 93 | scm_t_port *pt = SCM_PTAB_ENTRY (port); |
ee149d03 | 94 | |
ee149d03 JB |
95 | if (pt->read_pos >= pt->read_end) |
96 | return EOF; | |
97 | else | |
ca2ec018 | 98 | return *pt->read_pos; |
0f2d19dd JB |
99 | } |
100 | ||
691fcf66 LC |
101 | /* Change the size of a port's bytevector to NEW_SIZE. This doesn't |
102 | change `read_buf_size'. */ | |
103 | static void | |
f1ce9199 | 104 | st_resize_port (scm_t_port *pt, scm_t_off new_size) |
754c9491 | 105 | { |
94115ae3 | 106 | SCM old_stream = SCM_PACK (pt->stream); |
691fcf66 LC |
107 | const signed char *src = SCM_BYTEVECTOR_CONTENTS (old_stream); |
108 | SCM new_stream = scm_c_make_bytevector (new_size); | |
109 | signed char *dst = SCM_BYTEVECTOR_CONTENTS (new_stream); | |
110 | unsigned long int old_size = SCM_BYTEVECTOR_LENGTH (old_stream); | |
c014a02e | 111 | unsigned long int min_size = min (old_size, new_size); |
74a16888 | 112 | |
ca2ec018 | 113 | scm_t_off offset = pt->write_pos - pt->write_buf; |
3fe6190f GH |
114 | |
115 | pt->write_buf_size = new_size; | |
116 | ||
691fcf66 | 117 | memcpy (dst, src, min_size); |
8824ac88 MV |
118 | |
119 | scm_remember_upto_here_1 (old_stream); | |
754c9491 | 120 | |
94115ae3 | 121 | /* reset buffer. */ |
754c9491 | 122 | { |
729dbac3 | 123 | pt->stream = SCM_UNPACK (new_stream); |
5a6d139b | 124 | pt->read_buf = pt->write_buf = (unsigned char *)dst; |
ca2ec018 | 125 | pt->read_pos = pt->write_pos = pt->write_buf + offset; |
3fe6190f GH |
126 | pt->write_end = pt->write_buf + pt->write_buf_size; |
127 | pt->read_end = pt->read_buf + pt->read_buf_size; | |
754c9491 JB |
128 | } |
129 | } | |
130 | ||
ee149d03 | 131 | static void |
ca2ec018 | 132 | st_write (SCM port, const void *data, size_t size) |
0f2d19dd | 133 | { |
92c2555f | 134 | scm_t_port *pt = SCM_PTAB_ENTRY (port); |
ee149d03 | 135 | |
ca2ec018 AW |
136 | if (size > pt->write_end - pt->write_pos) |
137 | st_resize_port (pt, max (pt->write_buf_size * 2, | |
138 | pt->write_end - pt->write_pos + size)); | |
139 | ||
140 | memcpy ((char *) pt->write_pos, data, size); | |
141 | pt->read_pos = (pt->write_pos += size); | |
d8f1c216 | 142 | |
3fe6190f GH |
143 | if (pt->read_pos > pt->read_end) |
144 | { | |
145 | pt->read_end = (unsigned char *) pt->read_pos; | |
146 | pt->read_buf_size = pt->read_end - pt->read_buf; | |
147 | } | |
31703ab8 GH |
148 | } |
149 | ||
754c9491 | 150 | static void |
affc96b5 | 151 | st_end_input (SCM port, int offset) |
754c9491 | 152 | { |
92c2555f | 153 | scm_t_port *pt = SCM_PTAB_ENTRY (port); |
7dcb364d | 154 | |
cd19d608 GH |
155 | if (pt->read_pos - pt->read_buf < offset) |
156 | scm_misc_error ("st_end_input", "negative position", SCM_EOL); | |
157 | ||
a3c8b9fc | 158 | pt->write_pos = (unsigned char *) (pt->read_pos = pt->read_pos - offset); |
61e452ba | 159 | pt->rw_active = SCM_PORT_NEITHER; |
754c9491 JB |
160 | } |
161 | ||
f1ce9199 LC |
162 | static scm_t_off |
163 | st_seek (SCM port, scm_t_off offset, int whence) | |
754c9491 | 164 | { |
92c2555f | 165 | scm_t_port *pt = SCM_PTAB_ENTRY (port); |
f1ce9199 | 166 | scm_t_off target; |
754c9491 | 167 | |
7dcb364d GH |
168 | if (pt->rw_active == SCM_PORT_READ && offset == 0 && whence == SEEK_CUR) |
169 | /* special case to avoid disturbing the unread-char buffer. */ | |
754c9491 | 170 | { |
7dcb364d GH |
171 | if (pt->read_buf == pt->putback_buf) |
172 | { | |
173 | target = pt->saved_read_pos - pt->saved_read_buf | |
174 | - (pt->read_end - pt->read_pos); | |
175 | } | |
176 | else | |
177 | { | |
178 | target = pt->read_pos - pt->read_buf; | |
179 | } | |
754c9491 | 180 | } |
7dcb364d GH |
181 | else |
182 | /* all other cases. */ | |
754c9491 | 183 | { |
7dcb364d | 184 | if (pt->rw_active == SCM_PORT_READ) |
4251ae2e | 185 | scm_end_input_unlocked (port); |
7dcb364d | 186 | |
ca2ec018 AW |
187 | pt->rw_active = SCM_PORT_NEITHER; |
188 | ||
7dcb364d GH |
189 | switch (whence) |
190 | { | |
191 | case SEEK_CUR: | |
192 | target = pt->read_pos - pt->read_buf + offset; | |
193 | break; | |
194 | case SEEK_END: | |
195 | target = pt->read_end - pt->read_buf + offset; | |
196 | break; | |
197 | default: /* SEEK_SET */ | |
198 | target = offset; | |
199 | break; | |
200 | } | |
201 | ||
202 | if (target < 0) | |
203 | scm_misc_error ("st_seek", "negative offset", SCM_EOL); | |
204 | ||
205 | if (target >= pt->write_buf_size) | |
3fe6190f | 206 | { |
206d3de3 | 207 | if (!(SCM_CELL_WORD_0 (port) & SCM_WRTNG)) |
3fe6190f | 208 | { |
7dcb364d GH |
209 | if (target > pt->write_buf_size) |
210 | { | |
211 | scm_misc_error ("st_seek", | |
212 | "seek past end of read-only strport", | |
213 | SCM_EOL); | |
214 | } | |
215 | } | |
d8f1c216 LC |
216 | else if (target == pt->write_buf_size) |
217 | st_resize_port (pt, target * 2); | |
3fe6190f | 218 | } |
7dcb364d GH |
219 | pt->read_pos = pt->write_pos = pt->read_buf + target; |
220 | if (pt->read_pos > pt->read_end) | |
3fe6190f | 221 | { |
7dcb364d GH |
222 | pt->read_end = (unsigned char *) pt->read_pos; |
223 | pt->read_buf_size = pt->read_end - pt->read_buf; | |
3fe6190f | 224 | } |
ee149d03 | 225 | } |
754c9491 JB |
226 | return target; |
227 | } | |
228 | ||
229 | static void | |
f1ce9199 | 230 | st_truncate (SCM port, scm_t_off length) |
754c9491 | 231 | { |
92c2555f | 232 | scm_t_port *pt = SCM_PTAB_ENTRY (port); |
3fe6190f GH |
233 | |
234 | if (length > pt->write_buf_size) | |
235 | st_resize_port (pt, length); | |
236 | ||
237 | pt->read_buf_size = length; | |
238 | pt->read_end = pt->read_buf + length; | |
239 | if (pt->read_pos > pt->read_end) | |
ca2ec018 | 240 | pt->read_pos = pt->write_pos = pt->read_end; |
0f2d19dd JB |
241 | } |
242 | ||
0b2c2ba3 LC |
243 | /* The initial size in bytes of a string port's buffer. */ |
244 | #define INITIAL_BUFFER_SIZE 128 | |
245 | ||
246 | /* Return a new string port with MODES. If STR is #f, a new backing | |
247 | buffer is allocated; otherwise STR must be a string and a copy of it | |
248 | serves as the buffer for the new port. */ | |
7b041912 LC |
249 | SCM |
250 | scm_mkstrport (SCM pos, SCM str, long modes, const char *caller) | |
0f2d19dd | 251 | { |
691fcf66 | 252 | SCM z, buf; |
92c2555f | 253 | scm_t_port *pt; |
6dce942c | 254 | size_t read_buf_size, num_bytes, c_byte_pos; |
691fcf66 | 255 | char *c_buf; |
e11e83f3 | 256 | |
754c9491 JB |
257 | if (!((modes & SCM_WRTNG) || (modes & SCM_RDNG))) |
258 | scm_misc_error ("scm_mkstrport", "port must read or write", SCM_EOL); | |
5f16b897 | 259 | |
0b2c2ba3 LC |
260 | if (scm_is_false (str)) |
261 | { | |
262 | /* Allocate a new buffer to write to. */ | |
6dce942c MW |
263 | num_bytes = INITIAL_BUFFER_SIZE; |
264 | buf = scm_c_make_bytevector (num_bytes); | |
0b2c2ba3 LC |
265 | c_buf = (char *) SCM_BYTEVECTOR_CONTENTS (buf); |
266 | ||
267 | /* Reset `read_buf_size'. It will contain the actual number of | |
2721f918 AW |
268 | bytes written to the port. */ |
269 | read_buf_size = 0; | |
6dce942c | 270 | c_byte_pos = 0; |
0b2c2ba3 LC |
271 | } |
272 | else | |
273 | { | |
0b2c2ba3 | 274 | char *copy; |
691fcf66 | 275 | |
0b2c2ba3 | 276 | SCM_ASSERT (scm_is_string (str), str, SCM_ARG1, caller); |
691fcf66 | 277 | |
6dce942c MW |
278 | /* STR is a string. */ |
279 | /* Create a copy of STR in UTF-8. */ | |
280 | copy = scm_to_utf8_stringn (str, &num_bytes); | |
281 | buf = scm_c_make_bytevector (num_bytes); | |
0b2c2ba3 | 282 | c_buf = (char *) SCM_BYTEVECTOR_CONTENTS (buf); |
6dce942c | 283 | memcpy (c_buf, copy, num_bytes); |
0b2c2ba3 | 284 | free (copy); |
691fcf66 | 285 | |
6dce942c MW |
286 | read_buf_size = num_bytes; |
287 | ||
288 | if (scm_is_eq (pos, SCM_INUM0)) | |
289 | c_byte_pos = 0; | |
290 | else | |
291 | /* Inefficient but simple way to convert the character position | |
292 | POS into a byte position C_BYTE_POS. */ | |
293 | free (scm_to_utf8_stringn (scm_substring (str, SCM_INUM0, pos), | |
294 | &c_byte_pos)); | |
0b2c2ba3 | 295 | } |
691fcf66 | 296 | |
2721f918 | 297 | z = scm_c_make_port_with_encoding (scm_tc16_strport, modes, |
6dce942c | 298 | "UTF-8", |
0dd7c540 | 299 | scm_i_default_port_conversion_handler (), |
789dd40b | 300 | SCM_UNPACK (buf)); |
7b041912 | 301 | |
2721f918 | 302 | pt = SCM_PTAB_ENTRY (z); |
03fcf93b | 303 | |
691fcf66 | 304 | pt->write_buf = pt->read_buf = (unsigned char *) c_buf; |
6dce942c | 305 | pt->read_pos = pt->write_pos = pt->read_buf + c_byte_pos; |
2721f918 | 306 | pt->read_buf_size = read_buf_size; |
6dce942c | 307 | pt->write_buf_size = num_bytes; |
754c9491 | 308 | pt->write_end = pt->read_end = pt->read_buf + pt->read_buf_size; |
0de97b83 | 309 | pt->rw_random = 1; |
3fe6190f | 310 | |
0f2d19dd JB |
311 | return z; |
312 | } | |
313 | ||
7b041912 LC |
314 | /* Create a new string from the buffer of PORT, a string port, converting from |
315 | PORT's encoding to the standard string representation. */ | |
316 | SCM | |
317 | scm_strport_to_string (SCM port) | |
3fe6190f | 318 | { |
7b041912 LC |
319 | scm_t_port *pt = SCM_PTAB_ENTRY (port); |
320 | ||
fac32b51 MG |
321 | if (pt->read_buf_size == 0) |
322 | return scm_nullstr; | |
323 | ||
08467a7e | 324 | return scm_from_port_stringn ((char *)pt->read_buf, pt->read_buf_size, port); |
3fe6190f GH |
325 | } |
326 | ||
fe78b6c0 KN |
327 | SCM_DEFINE (scm_object_to_string, "object->string", 1, 1, 0, |
328 | (SCM obj, SCM printer), | |
329 | "Return a Scheme string obtained by printing @var{obj}.\n" | |
330 | "Printing function can be specified by the optional second\n" | |
331 | "argument @var{printer} (default: @code{write}).") | |
1f3908c4 KN |
332 | #define FUNC_NAME s_scm_object_to_string |
333 | { | |
8b263377 | 334 | SCM port, result; |
fe78b6c0 KN |
335 | |
336 | if (!SCM_UNBNDP (printer)) | |
337 | SCM_VALIDATE_PROC (2, printer); | |
1f3908c4 | 338 | |
0b2c2ba3 LC |
339 | port = scm_mkstrport (SCM_INUM0, SCM_BOOL_F, |
340 | SCM_OPN | SCM_WRTNG, FUNC_NAME); | |
fe78b6c0 KN |
341 | |
342 | if (SCM_UNBNDP (printer)) | |
343 | scm_write (obj, port); | |
344 | else | |
fdc28395 | 345 | scm_call_2 (printer, obj, port); |
fe78b6c0 | 346 | |
8b263377 LC |
347 | result = scm_strport_to_string (port); |
348 | ||
349 | /* Explicitly close PORT so that the iconv CDs associated with it are | |
350 | deallocated right away. This is important because CDs use a lot of | |
351 | memory that's not visible to the GC, so not freeing them can lead | |
352 | to almost large heap usage. See | |
353 | <http://wingolog.org/archives/2011/02/25/ports-weaks-gc-and-dark-matter> | |
354 | for details. */ | |
355 | scm_close_port (port); | |
356 | ||
357 | return result; | |
1f3908c4 KN |
358 | } |
359 | #undef FUNC_NAME | |
360 | ||
a62b5c3d AW |
361 | SCM |
362 | scm_call_with_output_string (SCM proc) | |
0f2d19dd | 363 | { |
a62b5c3d | 364 | static SCM var = SCM_BOOL_F; |
754c9491 | 365 | |
a62b5c3d AW |
366 | if (scm_is_false (var)) |
367 | var = scm_c_private_lookup ("guile", "call-with-output-string"); | |
3fe6190f | 368 | |
a62b5c3d | 369 | return scm_call_1 (scm_variable_ref (var), proc); |
0f2d19dd JB |
370 | } |
371 | ||
a62b5c3d AW |
372 | SCM |
373 | scm_call_with_input_string (SCM string, SCM proc) | |
0f2d19dd | 374 | { |
a62b5c3d AW |
375 | static SCM var = SCM_BOOL_F; |
376 | ||
377 | if (scm_is_false (var)) | |
378 | var = scm_c_private_lookup ("guile", "call-with-input-string"); | |
379 | ||
380 | return scm_call_2 (scm_variable_ref (var), string, proc); | |
0f2d19dd JB |
381 | } |
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 | ||
0b2c2ba3 | 407 | p = scm_mkstrport (SCM_INUM0, SCM_BOOL_F, |
e87a03fc MG |
408 | SCM_OPN | SCM_WRTNG, |
409 | FUNC_NAME); | |
410 | return p; | |
411 | } | |
412 | #undef FUNC_NAME | |
413 | ||
414 | SCM_DEFINE (scm_get_output_string, "get-output-string", 1, 0, 0, | |
415 | (SCM port), | |
416 | "Given an output port created by @code{open-output-string},\n" | |
1e6808ea | 417 | "return a string consisting of the characters that have been\n" |
e87a03fc MG |
418 | "output to the port so far.") |
419 | #define FUNC_NAME s_scm_get_output_string | |
420 | { | |
421 | SCM_VALIDATE_OPOUTSTRPORT (1, port); | |
422 | return scm_strport_to_string (port); | |
423 | } | |
424 | #undef FUNC_NAME | |
1cc91f1b | 425 | |
cd07a097 | 426 | |
a8aa30d8 MD |
427 | /* Given a null-terminated string EXPR containing a Scheme expression |
428 | read it, and return it as an SCM value. */ | |
429 | SCM | |
ca13a04a | 430 | scm_c_read_string (const char *expr) |
a8aa30d8 | 431 | { |
3fe6190f | 432 | SCM port = scm_mkstrport (SCM_INUM0, |
cc95e00a | 433 | scm_from_locale_string (expr), |
a8aa30d8 | 434 | SCM_OPN | SCM_RDNG, |
ca13a04a | 435 | "scm_c_read_string"); |
a8aa30d8 MD |
436 | SCM form; |
437 | ||
deca31e1 | 438 | form = scm_read (port); |
a8aa30d8 MD |
439 | |
440 | scm_close_port (port); | |
441 | return form; | |
442 | } | |
443 | ||
cd07a097 | 444 | /* Given a null-terminated string EXPR containing Scheme program text, |
a8aa30d8 MD |
445 | evaluate it, and return the result of the last expression evaluated. */ |
446 | SCM | |
ca13a04a | 447 | scm_c_eval_string (const char *expr) |
cd07a097 | 448 | { |
cc95e00a | 449 | return scm_eval_string (scm_from_locale_string (expr)); |
b377f53e JB |
450 | } |
451 | ||
209b52fe MV |
452 | SCM |
453 | scm_c_eval_string_in_module (const char *expr, SCM module) | |
454 | { | |
cc95e00a | 455 | return scm_eval_string_in_module (scm_from_locale_string (expr), module); |
209b52fe MV |
456 | } |
457 | ||
458 | ||
60617d81 MW |
459 | static SCM eval_string_var; |
460 | static SCM k_module; | |
461 | ||
462 | static void | |
463 | init_eval_string_var_and_k_module (void) | |
464 | { | |
465 | eval_string_var = scm_c_public_variable ("ice-9 eval-string", "eval-string"); | |
466 | k_module = scm_from_locale_keyword ("module"); | |
467 | } | |
468 | ||
209b52fe MV |
469 | SCM_DEFINE (scm_eval_string_in_module, "eval-string", 1, 1, 0, |
470 | (SCM string, SCM module), | |
96e83482 MV |
471 | "Evaluate @var{string} as the text representation of a Scheme\n" |
472 | "form or forms, and return whatever value they produce.\n" | |
209b52fe MV |
473 | "Evaluation takes place in the given module, or the current\n" |
474 | "module when no module is given.\n" | |
475 | "While the code is evaluated, the given module is made the\n" | |
476 | "current one. The current module is restored when this\n" | |
477 | "procedure returns.") | |
478 | #define FUNC_NAME s_scm_eval_string_in_module | |
96e83482 | 479 | { |
60617d81 MW |
480 | static scm_i_pthread_once_t once = SCM_I_PTHREAD_ONCE_INIT; |
481 | scm_i_pthread_once (&once, init_eval_string_var_and_k_module); | |
0b0e066a | 482 | |
209b52fe MV |
483 | if (SCM_UNBNDP (module)) |
484 | module = scm_current_module (); | |
aeec5be1 MV |
485 | else |
486 | SCM_VALIDATE_MODULE (2, module); | |
0b0e066a | 487 | |
60617d81 MW |
488 | return scm_call_3 (scm_variable_ref (eval_string_var), |
489 | string, k_module, module); | |
96e83482 | 490 | } |
1bbd0b84 | 491 | #undef FUNC_NAME |
cd07a097 | 492 | |
209b52fe MV |
493 | SCM |
494 | scm_eval_string (SCM string) | |
495 | { | |
496 | return scm_eval_string_in_module (string, SCM_UNDEFINED); | |
497 | } | |
498 | ||
92c2555f | 499 | static scm_t_bits |
0b6881fa | 500 | scm_make_stptob () |
0f2d19dd | 501 | { |
ca2ec018 | 502 | scm_t_bits tc = scm_make_port_type ("string", st_fill_input, st_write); |
a98bddfd | 503 | |
affc96b5 | 504 | scm_set_port_end_input (tc, st_end_input); |
6c747373 | 505 | scm_set_port_seek (tc, st_seek); |
affc96b5 | 506 | scm_set_port_truncate (tc, st_truncate); |
a98bddfd DH |
507 | |
508 | return tc; | |
0f2d19dd JB |
509 | } |
510 | ||
0f2d19dd JB |
511 | void |
512 | scm_init_strports () | |
0f2d19dd | 513 | { |
a98bddfd DH |
514 | scm_tc16_strport = scm_make_stptob (); |
515 | ||
a0599745 | 516 | #include "libguile/strports.x" |
0f2d19dd JB |
517 | } |
518 | ||
89e00824 ML |
519 | |
520 | /* | |
521 | Local Variables: | |
522 | c-file-style: "gnu" | |
523 | End: | |
524 | */ |