Commit | Line | Data |
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073167ef | 1 | /* Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
122f24cc | 2 | * 2004, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, |
37b14530 | 3 | * 2014, 2015 Free Software Foundation, Inc. |
073167ef | 4 | * |
73be1d9e | 5 | * This library is free software; you can redistribute it and/or |
53befeb7 NJ |
6 | * modify it under the terms of the GNU Lesser General Public License |
7 | * as published by the Free Software Foundation; either version 3 of | |
8 | * the License, or (at your option) any later version. | |
0f2d19dd | 9 | * |
53befeb7 NJ |
10 | * This library is distributed in the hope that it will be useful, but |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
73be1d9e MV |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | * Lesser General Public License for more details. | |
0f2d19dd | 14 | * |
73be1d9e MV |
15 | * You should have received a copy of the GNU Lesser General Public |
16 | * License along with this library; if not, write to the Free Software | |
53befeb7 NJ |
17 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
18 | * 02110-1301 USA | |
73be1d9e | 19 | */ |
1bbd0b84 | 20 | |
1bbd0b84 | 21 | |
0f2d19dd | 22 | \f |
8ab3d8a0 | 23 | #define _LARGEFILE64_SOURCE /* ask for stat64 etc */ |
9858e529 | 24 | #define _GNU_SOURCE /* ask for LONG_LONG_MAX/LONG_LONG_MIN */ |
8ab3d8a0 | 25 | |
dbb605f5 | 26 | #ifdef HAVE_CONFIG_H |
85286595 RB |
27 | # include <config.h> |
28 | #endif | |
0f2d19dd JB |
29 | |
30 | #include <stdio.h> | |
cb63cf9e | 31 | #include <fcntl.h> |
95b88819 GH |
32 | |
33 | #ifdef HAVE_STRING_H | |
34 | #include <string.h> | |
35 | #endif | |
0f2d19dd | 36 | #include <unistd.h> |
b8b17bfd MV |
37 | #ifdef HAVE_IO_H |
38 | #include <io.h> | |
39 | #endif | |
f47a5239 | 40 | #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE |
cb63cf9e JB |
41 | #include <sys/stat.h> |
42 | #endif | |
c7519da3 | 43 | #include <poll.h> |
cb63cf9e | 44 | #include <errno.h> |
8ab3d8a0 | 45 | #include <sys/types.h> |
09b204d3 | 46 | #include <sys/stat.h> |
629987ed | 47 | #include <sys/select.h> |
e145dd02 | 48 | |
5335850d LC |
49 | #include <full-write.h> |
50 | ||
629987ed AW |
51 | #include "libguile/_scm.h" |
52 | #include "libguile/strings.h" | |
53 | #include "libguile/validate.h" | |
54 | #include "libguile/gc.h" | |
55 | #include "libguile/posix.h" | |
56 | #include "libguile/dynwind.h" | |
57 | #include "libguile/hashtab.h" | |
8ab3d8a0 | 58 | |
629987ed | 59 | #include "libguile/fports.h" |
122f24cc | 60 | #include "libguile/ports-internal.h" |
8ab3d8a0 KR |
61 | |
62 | #if SIZEOF_OFF_T == SIZEOF_INT | |
63 | #define OFF_T_MAX INT_MAX | |
64 | #define OFF_T_MIN INT_MIN | |
65 | #elif SIZEOF_OFF_T == SIZEOF_LONG | |
66 | #define OFF_T_MAX LONG_MAX | |
67 | #define OFF_T_MIN LONG_MIN | |
68 | #elif SIZEOF_OFF_T == SIZEOF_LONG_LONG | |
69 | #define OFF_T_MAX LONG_LONG_MAX | |
70 | #define OFF_T_MIN LONG_LONG_MIN | |
71 | #else | |
72 | #error Oops, unknown OFF_T size | |
73 | #endif | |
a98bddfd | 74 | |
92c2555f | 75 | scm_t_bits scm_tc16_fport; |
a98bddfd DH |
76 | |
77 | ||
19b27fa2 | 78 | /* default buffer size, used if the O/S won't supply a value. */ |
1be6b49c | 79 | static const size_t default_buffer_size = 1024; |
19b27fa2 | 80 | |
122f24cc LC |
81 | /* Create FPORT buffers with specified sizes (or -1 to use default size |
82 | or 0 for no buffer.) */ | |
cb63cf9e | 83 | static void |
122f24cc | 84 | scm_fport_buffer_add (SCM port, long read_size, long write_size) |
c6c79933 | 85 | #define FUNC_NAME "scm_fport_buffer_add" |
e145dd02 | 86 | { |
92c2555f | 87 | scm_t_port *pt = SCM_PTAB_ENTRY (port); |
e145dd02 | 88 | |
cb63cf9e JB |
89 | if (read_size == -1 || write_size == -1) |
90 | { | |
1be6b49c | 91 | size_t default_size; |
f47a5239 | 92 | #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE |
cb63cf9e | 93 | struct stat st; |
b8b17bfd | 94 | scm_t_fport *fp = SCM_FSTREAM (port); |
cb63cf9e | 95 | |
19b27fa2 GH |
96 | default_size = (fstat (fp->fdes, &st) == -1) ? default_buffer_size |
97 | : st.st_blksize; | |
cb63cf9e | 98 | #else |
19b27fa2 | 99 | default_size = default_buffer_size; |
cb63cf9e JB |
100 | #endif |
101 | if (read_size == -1) | |
102 | read_size = default_size; | |
103 | if (write_size == -1) | |
104 | write_size = default_size; | |
105 | } | |
0f2d19dd | 106 | |
f5f2dcff | 107 | if (SCM_INPUT_PORT_P (port) && read_size > 0) |
cb63cf9e | 108 | { |
92d8fd32 | 109 | pt->read_buf = scm_gc_malloc_pointerless (read_size, "port buffer"); |
cb63cf9e JB |
110 | pt->read_pos = pt->read_end = pt->read_buf; |
111 | pt->read_buf_size = read_size; | |
112 | } | |
113 | else | |
114 | { | |
840ae05d | 115 | pt->read_pos = pt->read_buf = pt->read_end = &pt->shortbuf; |
cb63cf9e JB |
116 | pt->read_buf_size = 1; |
117 | } | |
1717856b | 118 | |
f5f2dcff | 119 | if (SCM_OUTPUT_PORT_P (port) && write_size > 0) |
cb63cf9e | 120 | { |
92d8fd32 | 121 | pt->write_buf = scm_gc_malloc_pointerless (write_size, "port buffer"); |
cb63cf9e JB |
122 | pt->write_pos = pt->write_buf; |
123 | pt->write_buf_size = write_size; | |
124 | } | |
125 | else | |
126 | { | |
127 | pt->write_buf = pt->write_pos = &pt->shortbuf; | |
128 | pt->write_buf_size = 1; | |
129 | } | |
130 | ||
131 | pt->write_end = pt->write_buf + pt->write_buf_size; | |
132 | if (read_size > 0 || write_size > 0) | |
54778cd3 | 133 | SCM_SET_CELL_WORD_0 (port, SCM_CELL_WORD_0 (port) & ~SCM_BUF0); |
cb63cf9e | 134 | else |
54778cd3 | 135 | SCM_SET_CELL_WORD_0 (port, SCM_CELL_WORD_0 (port) | SCM_BUF0); |
7a6f1ffa | 136 | } |
c6c79933 | 137 | #undef FUNC_NAME |
7a6f1ffa | 138 | |
a1ec6916 | 139 | SCM_DEFINE (scm_setvbuf, "setvbuf", 2, 1, 0, |
1bbd0b84 | 140 | (SCM port, SCM mode, SCM size), |
fc0d72d4 MD |
141 | "Set the buffering mode for @var{port}. @var{mode} can be:\n" |
142 | "@table @code\n" | |
143 | "@item _IONBF\n" | |
144 | "non-buffered\n" | |
145 | "@item _IOLBF\n" | |
146 | "line buffered\n" | |
147 | "@item _IOFBF\n" | |
148 | "block buffered, using a newly allocated buffer of @var{size} bytes.\n" | |
149 | "If @var{size} is omitted, a default size will be used.\n" | |
122f24cc LC |
150 | "@end table\n\n" |
151 | "Only certain types of ports are supported, most importantly\n" | |
152 | "file ports.") | |
1bbd0b84 | 153 | #define FUNC_NAME s_scm_setvbuf |
7a6f1ffa | 154 | { |
1be6b49c | 155 | int cmode; |
c014a02e | 156 | long csize; |
e8b21eec | 157 | size_t ndrained; |
5e793ad8 | 158 | char *drained = NULL; |
92c2555f | 159 | scm_t_port *pt; |
e140d85d | 160 | scm_t_ptob_descriptor *ptob; |
7a6f1ffa | 161 | |
78446828 MV |
162 | port = SCM_COERCE_OUTPORT (port); |
163 | ||
122f24cc | 164 | SCM_VALIDATE_OPENPORT (1, port); |
e140d85d | 165 | ptob = SCM_PORT_DESCRIPTOR (port); |
122f24cc | 166 | |
e140d85d | 167 | if (ptob->setvbuf == NULL) |
122f24cc LC |
168 | scm_wrong_type_arg_msg (FUNC_NAME, 1, port, |
169 | "port that supports 'setvbuf'"); | |
170 | ||
a55c2b68 | 171 | cmode = scm_to_int (mode); |
d3639214 | 172 | if (cmode != _IONBF && cmode != _IOFBF && cmode != _IOLBF) |
1bbd0b84 | 173 | scm_out_of_range (FUNC_NAME, mode); |
d3639214 GH |
174 | |
175 | if (cmode == _IOLBF) | |
176 | { | |
54778cd3 | 177 | SCM_SET_CELL_WORD_0 (port, SCM_CELL_WORD_0 (port) | SCM_BUFLINE); |
d3639214 GH |
178 | cmode = _IOFBF; |
179 | } | |
180 | else | |
122f24cc LC |
181 | SCM_SET_CELL_WORD_0 (port, |
182 | SCM_CELL_WORD_0 (port) & ~(scm_t_bits) SCM_BUFLINE); | |
d3639214 | 183 | |
7a6f1ffa | 184 | if (SCM_UNBNDP (size)) |
cb63cf9e JB |
185 | { |
186 | if (cmode == _IOFBF) | |
187 | csize = -1; | |
188 | else | |
189 | csize = 0; | |
190 | } | |
7a6f1ffa GH |
191 | else |
192 | { | |
a55c2b68 | 193 | csize = scm_to_int (size); |
cb63cf9e | 194 | if (csize < 0 || (cmode == _IONBF && csize > 0)) |
1bbd0b84 | 195 | scm_out_of_range (FUNC_NAME, size); |
7a6f1ffa | 196 | } |
d3639214 | 197 | |
cb63cf9e | 198 | pt = SCM_PTAB_ENTRY (port); |
7a6f1ffa | 199 | |
67a72dc1 | 200 | if (SCM_INPUT_PORT_P (port)) |
e8b21eec LC |
201 | { |
202 | /* Drain pending input from PORT. Don't use `scm_drain_input' since | |
203 | it returns a string, whereas we want binary input here. */ | |
204 | ndrained = pt->read_end - pt->read_pos; | |
205 | if (pt->read_buf == pt->putback_buf) | |
206 | ndrained += pt->saved_read_end - pt->saved_read_pos; | |
207 | ||
208 | if (ndrained > 0) | |
209 | { | |
210 | drained = scm_gc_malloc_pointerless (ndrained, "file port"); | |
211 | scm_take_from_input_buffers (port, drained, ndrained); | |
212 | } | |
213 | } | |
67a72dc1 | 214 | else |
e8b21eec | 215 | ndrained = 0; |
67a72dc1 AW |
216 | |
217 | if (SCM_OUTPUT_PORT_P (port)) | |
4251ae2e | 218 | scm_flush_unlocked (port); |
67a72dc1 | 219 | |
4c9419ac MV |
220 | if (pt->read_buf == pt->putback_buf) |
221 | { | |
222 | pt->read_buf = pt->saved_read_buf; | |
223 | pt->read_pos = pt->saved_read_pos; | |
224 | pt->read_end = pt->saved_read_end; | |
225 | pt->read_buf_size = pt->saved_read_buf_size; | |
226 | } | |
7a6f1ffa | 227 | |
e140d85d | 228 | ptob->setvbuf (port, csize, csize); |
67a72dc1 | 229 | |
e8b21eec LC |
230 | if (ndrained > 0) |
231 | /* Put DRAINED back to PORT. */ | |
7f6c3f8f | 232 | scm_unget_bytes ((unsigned char *) drained, ndrained, port); |
67a72dc1 | 233 | |
cb63cf9e | 234 | return SCM_UNSPECIFIED; |
0f2d19dd | 235 | } |
1bbd0b84 | 236 | #undef FUNC_NAME |
0f2d19dd | 237 | |
eadd48de | 238 | /* Move ports with the specified file descriptor to new descriptors, |
387d418c | 239 | * resetting the revealed count to 0. |
0f2d19dd | 240 | */ |
ee834df4 LC |
241 | static void |
242 | scm_i_evict_port (void *closure, SCM port) | |
0f2d19dd | 243 | { |
5dbc6c06 | 244 | int fd = * (int*) closure; |
0f2d19dd | 245 | |
5dbc6c06 | 246 | if (SCM_FPORTP (port)) |
eadd48de | 247 | { |
e9d8bc25 LC |
248 | scm_t_port *p; |
249 | scm_t_fport *fp; | |
250 | ||
251 | /* XXX: In some cases, we can encounter a port with no associated ptab | |
252 | entry. */ | |
253 | p = SCM_PTAB_ENTRY (port); | |
254 | fp = (p != NULL) ? (scm_t_fport *) p->stream : NULL; | |
cb63cf9e | 255 | |
e9d8bc25 | 256 | if ((fp != NULL) && (fp->fdes == fd)) |
eadd48de | 257 | { |
5dbc6c06 HWN |
258 | fp->fdes = dup (fd); |
259 | if (fp->fdes == -1) | |
260 | scm_syserror ("scm_evict_ports"); | |
261 | scm_set_port_revealed_x (port, scm_from_int (0)); | |
eadd48de GH |
262 | } |
263 | } | |
5dbc6c06 HWN |
264 | } |
265 | ||
266 | void | |
267 | scm_evict_ports (int fd) | |
268 | { | |
ee834df4 | 269 | scm_c_port_for_each (scm_i_evict_port, (void *) &fd); |
eadd48de | 270 | } |
0f2d19dd | 271 | |
efa40607 DH |
272 | |
273 | SCM_DEFINE (scm_file_port_p, "file-port?", 1, 0, 0, | |
274 | (SCM obj), | |
2069af38 | 275 | "Determine whether @var{obj} is a port that is related to a file.") |
efa40607 DH |
276 | #define FUNC_NAME s_scm_file_port_p |
277 | { | |
7888309b | 278 | return scm_from_bool (SCM_FPORTP (obj)); |
efa40607 DH |
279 | } |
280 | #undef FUNC_NAME | |
281 | ||
282 | ||
69cac238 | 283 | static SCM sys_file_port_name_canonicalization; |
0157a341 AW |
284 | SCM_SYMBOL (sym_relative, "relative"); |
285 | SCM_SYMBOL (sym_absolute, "absolute"); | |
286 | ||
287 | static SCM | |
288 | fport_canonicalize_filename (SCM filename) | |
289 | { | |
69cac238 AW |
290 | SCM mode = scm_fluid_ref (sys_file_port_name_canonicalization); |
291 | ||
0157a341 AW |
292 | if (!scm_is_string (filename)) |
293 | { | |
294 | return filename; | |
295 | } | |
69cac238 | 296 | else if (scm_is_eq (mode, sym_relative)) |
0157a341 | 297 | { |
22457d57 AW |
298 | SCM path, rel; |
299 | ||
300 | path = scm_variable_ref (scm_c_module_lookup (scm_the_root_module (), | |
301 | "%load-path")); | |
302 | rel = scm_i_relativize_path (filename, path); | |
303 | ||
304 | return scm_is_true (rel) ? rel : filename; | |
0157a341 | 305 | } |
69cac238 | 306 | else if (scm_is_eq (mode, sym_absolute)) |
0157a341 AW |
307 | { |
308 | char *str, *canon; | |
309 | ||
310 | str = scm_to_locale_string (filename); | |
311 | canon = canonicalize_file_name (str); | |
312 | free (str); | |
313 | ||
314 | return canon ? scm_take_locale_string (canon) : filename; | |
315 | } | |
316 | else | |
317 | { | |
318 | return filename; | |
319 | } | |
320 | } | |
321 | ||
3ace9a8e MW |
322 | /* scm_open_file_with_encoding |
323 | Return a new port open on a given file. | |
0157a341 | 324 | |
3ace9a8e MW |
325 | The mode string must match the pattern: [rwa+]** which |
326 | is interpreted in the usual unix way. | |
327 | ||
328 | Unless binary mode is requested, the character encoding of the new | |
329 | port is determined as follows: First, if GUESS_ENCODING is true, | |
330 | 'file-encoding' is used to guess the encoding of the file. If | |
331 | GUESS_ENCODING is false or if 'file-encoding' fails, ENCODING is used | |
332 | unless it is also false. As a last resort, the default port encoding | |
333 | is used. It is an error to pass a non-false GUESS_ENCODING or | |
334 | ENCODING if binary mode is requested. | |
335 | ||
336 | Return the new port. */ | |
337 | SCM | |
338 | scm_open_file_with_encoding (SCM filename, SCM mode, | |
339 | SCM guess_encoding, SCM encoding) | |
340 | #define FUNC_NAME "open-file" | |
0f2d19dd | 341 | { |
19639113 | 342 | SCM port; |
9a334eb3 | 343 | int fdes, flags = 0, binary = 0; |
64e3a89c | 344 | unsigned int retries; |
37b14530 LC |
345 | char *file; |
346 | const char *md, *ptr; | |
19639113 | 347 | |
3ace9a8e MW |
348 | if (SCM_UNLIKELY (!(scm_is_false (encoding) || scm_is_string (encoding)))) |
349 | scm_wrong_type_arg_msg (FUNC_NAME, 0, encoding, | |
350 | "encoding to be string or false"); | |
351 | ||
661ae7ab | 352 | scm_dynwind_begin (0); |
19639113 | 353 | |
7f9994d9 | 354 | file = scm_to_locale_string (filename); |
661ae7ab | 355 | scm_dynwind_free (file); |
7f9994d9 | 356 | |
37b14530 LC |
357 | if (SCM_UNLIKELY (!scm_i_try_narrow_string (mode))) |
358 | scm_out_of_range (FUNC_NAME, mode); | |
359 | ||
360 | md = scm_i_string_chars (mode); | |
19639113 | 361 | |
1e6808ea | 362 | switch (*md) |
0f2d19dd | 363 | { |
cb63cf9e JB |
364 | case 'r': |
365 | flags |= O_RDONLY; | |
366 | break; | |
367 | case 'w': | |
368 | flags |= O_WRONLY | O_CREAT | O_TRUNC; | |
369 | break; | |
370 | case 'a': | |
371 | flags |= O_WRONLY | O_CREAT | O_APPEND; | |
372 | break; | |
373 | default: | |
1e6808ea | 374 | scm_out_of_range (FUNC_NAME, mode); |
0f2d19dd | 375 | } |
1e6808ea | 376 | ptr = md + 1; |
cb63cf9e | 377 | while (*ptr != '\0') |
e145dd02 | 378 | { |
cb63cf9e JB |
379 | switch (*ptr) |
380 | { | |
381 | case '+': | |
382 | flags = (flags & ~(O_RDONLY | O_WRONLY)) | O_RDWR; | |
383 | break; | |
9f561420 | 384 | case 'b': |
9a334eb3 | 385 | binary = 1; |
9f561420 GH |
386 | #if defined (O_BINARY) |
387 | flags |= O_BINARY; | |
388 | #endif | |
389 | break; | |
cb63cf9e | 390 | case '0': /* unbuffered: handled later. */ |
d3639214 | 391 | case 'l': /* line buffered: handled during output. */ |
cb63cf9e JB |
392 | break; |
393 | default: | |
1e6808ea | 394 | scm_out_of_range (FUNC_NAME, mode); |
cb63cf9e JB |
395 | } |
396 | ptr++; | |
e145dd02 | 397 | } |
cb63cf9e | 398 | |
64e3a89c LC |
399 | for (retries = 0, fdes = -1; |
400 | fdes < 0 && retries < 2; | |
401 | retries++) | |
402 | { | |
403 | SCM_SYSCALL (fdes = open_or_open64 (file, flags, 0666)); | |
404 | if (fdes == -1) | |
405 | { | |
406 | int en = errno; | |
407 | ||
408 | if (en == EMFILE && retries == 0) | |
409 | /* Run the GC in case it collects open file ports that are no | |
410 | longer referenced. */ | |
411 | scm_i_gc (FUNC_NAME); | |
412 | else | |
413 | SCM_SYSERROR_MSG ("~A: ~S", | |
414 | scm_cons (scm_strerror (scm_from_int (en)), | |
415 | scm_cons (filename, SCM_EOL)), en); | |
416 | } | |
0f2d19dd | 417 | } |
64e3a89c | 418 | |
211683cc MG |
419 | /* Create a port from this file descriptor. The port's encoding is initially |
420 | %default-port-encoding. */ | |
0157a341 AW |
421 | port = scm_i_fdes_to_port (fdes, scm_i_mode_bits (mode), |
422 | fport_canonicalize_filename (filename)); | |
7f9994d9 | 423 | |
9a334eb3 | 424 | if (binary) |
211683cc | 425 | { |
3ace9a8e MW |
426 | if (scm_is_true (encoding)) |
427 | scm_misc_error (FUNC_NAME, | |
428 | "Encoding specified on a binary port", | |
429 | scm_list_1 (encoding)); | |
430 | if (scm_is_true (guess_encoding)) | |
431 | scm_misc_error (FUNC_NAME, | |
432 | "Request to guess encoding on a binary port", | |
433 | SCM_EOL); | |
434 | ||
435 | /* Use the binary-friendly ISO-8859-1 encoding. */ | |
436 | scm_i_set_port_encoding_x (port, NULL); | |
211683cc MG |
437 | } |
438 | else | |
3ace9a8e MW |
439 | { |
440 | char *enc = NULL; | |
441 | ||
442 | if (scm_is_true (guess_encoding)) | |
443 | { | |
444 | if (SCM_INPUT_PORT_P (port)) | |
445 | enc = scm_i_scan_for_encoding (port); | |
446 | else | |
447 | scm_misc_error (FUNC_NAME, | |
448 | "Request to guess encoding on an output-only port", | |
449 | SCM_EOL); | |
450 | } | |
451 | ||
452 | if (!enc && scm_is_true (encoding)) | |
453 | { | |
454 | char *buf = scm_to_latin1_string (encoding); | |
455 | enc = scm_gc_strdup (buf, "encoding"); | |
456 | free (buf); | |
457 | } | |
458 | ||
459 | if (enc) | |
460 | scm_i_set_port_encoding_x (port, enc); | |
461 | } | |
211683cc | 462 | |
661ae7ab | 463 | scm_dynwind_end (); |
7f9994d9 | 464 | |
0f2d19dd JB |
465 | return port; |
466 | } | |
1bbd0b84 | 467 | #undef FUNC_NAME |
0f2d19dd | 468 | |
3ace9a8e MW |
469 | SCM |
470 | scm_open_file (SCM filename, SCM mode) | |
471 | { | |
472 | return scm_open_file_with_encoding (filename, mode, SCM_BOOL_F, SCM_BOOL_F); | |
473 | } | |
474 | ||
475 | /* We can't define these using SCM_KEYWORD, because keywords have not | |
476 | yet been initialized when scm_init_fports is called. */ | |
477 | static SCM k_guess_encoding = SCM_UNDEFINED; | |
478 | static SCM k_encoding = SCM_UNDEFINED; | |
479 | ||
6a9d9e3a AW |
480 | SCM_INTERNAL SCM scm_i_open_file (SCM, SCM, SCM); |
481 | ||
3ace9a8e MW |
482 | SCM_DEFINE (scm_i_open_file, "open-file", 2, 0, 1, |
483 | (SCM filename, SCM mode, SCM keyword_args), | |
484 | "Open the file whose name is @var{filename}, and return a port\n" | |
485 | "representing that file. The attributes of the port are\n" | |
486 | "determined by the @var{mode} string. The way in which this is\n" | |
487 | "interpreted is similar to C stdio. The first character must be\n" | |
488 | "one of the following:\n" | |
489 | "@table @samp\n" | |
490 | "@item r\n" | |
491 | "Open an existing file for input.\n" | |
492 | "@item w\n" | |
493 | "Open a file for output, creating it if it doesn't already exist\n" | |
494 | "or removing its contents if it does.\n" | |
495 | "@item a\n" | |
496 | "Open a file for output, creating it if it doesn't already\n" | |
497 | "exist. All writes to the port will go to the end of the file.\n" | |
498 | "The \"append mode\" can be turned off while the port is in use\n" | |
499 | "@pxref{Ports and File Descriptors, fcntl}\n" | |
500 | "@end table\n" | |
501 | "The following additional characters can be appended:\n" | |
502 | "@table @samp\n" | |
503 | "@item b\n" | |
504 | "Open the underlying file in binary mode, if supported by the system.\n" | |
505 | "Also, open the file using the binary-compatible character encoding\n" | |
506 | "\"ISO-8859-1\", ignoring the default port encoding.\n" | |
507 | "@item +\n" | |
508 | "Open the port for both input and output. E.g., @code{r+}: open\n" | |
509 | "an existing file for both input and output.\n" | |
510 | "@item 0\n" | |
511 | "Create an \"unbuffered\" port. In this case input and output\n" | |
512 | "operations are passed directly to the underlying port\n" | |
513 | "implementation without additional buffering. This is likely to\n" | |
514 | "slow down I/O operations. The buffering mode can be changed\n" | |
515 | "while a port is in use @pxref{Ports and File Descriptors,\n" | |
516 | "setvbuf}\n" | |
517 | "@item l\n" | |
518 | "Add line-buffering to the port. The port output buffer will be\n" | |
519 | "automatically flushed whenever a newline character is written.\n" | |
520 | "@end table\n" | |
521 | "In theory we could create read/write ports which were buffered\n" | |
522 | "in one direction only. However this isn't included in the\n" | |
523 | "current interfaces. If a file cannot be opened with the access\n" | |
524 | "requested, @code{open-file} throws an exception.") | |
525 | #define FUNC_NAME s_scm_i_open_file | |
526 | { | |
527 | SCM encoding = SCM_BOOL_F; | |
528 | SCM guess_encoding = SCM_BOOL_F; | |
529 | ||
530 | scm_c_bind_keyword_arguments (FUNC_NAME, keyword_args, 0, | |
531 | k_guess_encoding, &guess_encoding, | |
532 | k_encoding, &encoding, | |
533 | SCM_UNDEFINED); | |
534 | ||
535 | return scm_open_file_with_encoding (filename, mode, | |
536 | guess_encoding, encoding); | |
537 | } | |
538 | #undef FUNC_NAME | |
539 | ||
e145dd02 | 540 | \f |
cb63cf9e | 541 | /* Building Guile ports from a file descriptor. */ |
e145dd02 | 542 | |
cb63cf9e | 543 | /* Build a Scheme port from an open file descriptor `fdes'. |
a089567e JB |
544 | MODE indicates whether FILE is open for reading or writing; it uses |
545 | the same notation as open-file's second argument. | |
19b27fa2 GH |
546 | NAME is a string to be used as the port's filename. |
547 | */ | |
a089567e | 548 | SCM |
d617ee18 | 549 | scm_i_fdes_to_port (int fdes, long mode_bits, SCM name) |
19b27fa2 | 550 | #define FUNC_NAME "scm_fdes_to_port" |
a089567e | 551 | { |
a089567e | 552 | SCM port; |
2721f918 | 553 | scm_t_fport *fp; |
19b27fa2 | 554 | |
09b204d3 AW |
555 | /* Test that fdes is valid. */ |
556 | #ifdef F_GETFL | |
557 | int flags = fcntl (fdes, F_GETFL, 0); | |
19b27fa2 GH |
558 | if (flags == -1) |
559 | SCM_SYSERROR; | |
560 | flags &= O_ACCMODE; | |
561 | if (flags != O_RDWR | |
562 | && ((flags != O_WRONLY && (mode_bits & SCM_WRTNG)) | |
563 | || (flags != O_RDONLY && (mode_bits & SCM_RDNG)))) | |
564 | { | |
565 | SCM_MISC_ERROR ("requested file mode not available on fdes", SCM_EOL); | |
566 | } | |
09b204d3 AW |
567 | #else |
568 | /* If we don't have F_GETFL, as on mingw, at least we can test that | |
569 | it is a valid file descriptor. */ | |
570 | struct stat st; | |
571 | if (fstat (fdes, &st) != 0) | |
572 | SCM_SYSERROR; | |
573 | #endif | |
a089567e | 574 | |
2721f918 AW |
575 | fp = (scm_t_fport *) scm_gc_malloc_pointerless (sizeof (scm_t_fport), |
576 | "file port"); | |
577 | fp->fdes = fdes; | |
578 | ||
579 | port = scm_c_make_port (scm_tc16_fport, mode_bits, (scm_t_bits)fp); | |
580 | ||
581 | SCM_PTAB_ENTRY (port)->rw_random = SCM_FDES_RANDOM_P (fdes); | |
582 | ||
583 | if (mode_bits & SCM_BUF0) | |
584 | scm_fport_buffer_add (port, 0, 0); | |
585 | else | |
586 | scm_fport_buffer_add (port, -1, -1); | |
587 | ||
b24b5e13 | 588 | SCM_SET_FILENAME (port, name); |
2721f918 | 589 | |
e145dd02 JB |
590 | return port; |
591 | } | |
19b27fa2 | 592 | #undef FUNC_NAME |
e145dd02 | 593 | |
d617ee18 MV |
594 | SCM |
595 | scm_fdes_to_port (int fdes, char *mode, SCM name) | |
596 | { | |
597 | return scm_i_fdes_to_port (fdes, scm_mode_bits (mode), name); | |
598 | } | |
599 | ||
affc96b5 | 600 | /* Return a lower bound on the number of bytes available for input. */ |
cb63cf9e | 601 | static int |
affc96b5 | 602 | fport_input_waiting (SCM port) |
e145dd02 | 603 | { |
23f2b9a3 | 604 | int fdes = SCM_FSTREAM (port)->fdes; |
c7519da3 | 605 | |
c7519da3 CC |
606 | struct pollfd pollfd = { fdes, POLLIN, 0 }; |
607 | ||
608 | if (poll (&pollfd, 1, 0) < 0) | |
609 | scm_syserror ("fport_input_waiting"); | |
610 | ||
611 | return pollfd.revents & POLLIN ? 1 : 0; | |
a089567e JB |
612 | } |
613 | ||
3753e227 AW |
614 | |
615 | \f | |
616 | ||
617 | /* Revealed counts --- an oddity inherited from SCSH. */ | |
618 | ||
619 | #define SCM_REVEALED(x) (SCM_FSTREAM(x)->revealed) | |
620 | ||
621 | static SCM revealed_ports = SCM_EOL; | |
622 | static scm_i_pthread_mutex_t revealed_lock = SCM_I_PTHREAD_MUTEX_INITIALIZER; | |
3753e227 AW |
623 | |
624 | /* Find a port in the table and return its revealed count. | |
625 | Also used by the garbage collector. | |
626 | */ | |
627 | int | |
628 | scm_revealed_count (SCM port) | |
629 | { | |
630 | int ret; | |
631 | ||
632 | scm_i_pthread_mutex_lock (&revealed_lock); | |
633 | ret = SCM_REVEALED (port); | |
634 | scm_i_pthread_mutex_unlock (&revealed_lock); | |
635 | ||
636 | return ret; | |
637 | } | |
638 | ||
639 | SCM_DEFINE (scm_port_revealed, "port-revealed", 1, 0, 0, | |
640 | (SCM port), | |
641 | "Return the revealed count for @var{port}.") | |
642 | #define FUNC_NAME s_scm_port_revealed | |
643 | { | |
644 | port = SCM_COERCE_OUTPORT (port); | |
645 | SCM_VALIDATE_OPFPORT (1, port); | |
646 | return scm_from_int (scm_revealed_count (port)); | |
647 | } | |
648 | #undef FUNC_NAME | |
649 | ||
650 | /* Set the revealed count for a port. */ | |
651 | SCM_DEFINE (scm_set_port_revealed_x, "set-port-revealed!", 2, 0, 0, | |
652 | (SCM port, SCM rcount), | |
653 | "Sets the revealed count for a port to a given value.\n" | |
654 | "The return value is unspecified.") | |
655 | #define FUNC_NAME s_scm_set_port_revealed_x | |
656 | { | |
657 | int r, prev; | |
658 | ||
659 | port = SCM_COERCE_OUTPORT (port); | |
660 | SCM_VALIDATE_OPFPORT (1, port); | |
661 | ||
662 | r = scm_to_int (rcount); | |
663 | ||
664 | scm_i_pthread_mutex_lock (&revealed_lock); | |
665 | ||
666 | prev = SCM_REVEALED (port); | |
667 | SCM_REVEALED (port) = r; | |
668 | ||
669 | if (r && !prev) | |
670 | revealed_ports = scm_cons (port, revealed_ports); | |
671 | else if (prev && !r) | |
672 | revealed_ports = scm_delq_x (port, revealed_ports); | |
673 | ||
674 | scm_i_pthread_mutex_unlock (&revealed_lock); | |
675 | ||
676 | return SCM_UNSPECIFIED; | |
677 | } | |
678 | #undef FUNC_NAME | |
679 | ||
680 | /* Set the revealed count for a port. */ | |
681 | SCM_DEFINE (scm_adjust_port_revealed_x, "adjust-port-revealed!", 2, 0, 0, | |
682 | (SCM port, SCM addend), | |
683 | "Add @var{addend} to the revealed count of @var{port}.\n" | |
684 | "The return value is unspecified.") | |
685 | #define FUNC_NAME s_scm_adjust_port_revealed_x | |
686 | { | |
687 | int a; | |
688 | ||
689 | port = SCM_COERCE_OUTPORT (port); | |
690 | SCM_VALIDATE_OPFPORT (1, port); | |
691 | ||
692 | a = scm_to_int (addend); | |
693 | if (!a) | |
694 | return SCM_UNSPECIFIED; | |
695 | ||
696 | scm_i_pthread_mutex_lock (&revealed_lock); | |
697 | ||
698 | SCM_REVEALED (port) += a; | |
699 | if (SCM_REVEALED (port) == a) | |
700 | revealed_ports = scm_cons (port, revealed_ports); | |
701 | else if (!SCM_REVEALED (port)) | |
702 | revealed_ports = scm_delq_x (port, revealed_ports); | |
703 | ||
704 | scm_i_pthread_mutex_unlock (&revealed_lock); | |
705 | ||
706 | return SCM_UNSPECIFIED; | |
707 | } | |
708 | #undef FUNC_NAME | |
709 | ||
710 | ||
cb63cf9e | 711 | \f |
0f2d19dd | 712 | static int |
e81d98ec | 713 | fport_print (SCM exp, SCM port, scm_print_state *pstate SCM_UNUSED) |
0f2d19dd | 714 | { |
0607ebbf | 715 | scm_puts_unlocked ("#<", port); |
b3ec3c64 MD |
716 | scm_print_port_mode (exp, port); |
717 | if (SCM_OPFPORTP (exp)) | |
0f2d19dd | 718 | { |
b3ec3c64 | 719 | int fdes; |
b24b5e13 | 720 | SCM name = SCM_FILENAME (exp); |
cc95e00a | 721 | if (scm_is_string (name) || scm_is_symbol (name)) |
b24b5e13 DH |
722 | scm_display (name, port); |
723 | else | |
0607ebbf AW |
724 | scm_puts_unlocked (SCM_PTOBNAME (SCM_PTOBNUM (exp)), port); |
725 | scm_putc_unlocked (' ', port); | |
b3ec3c64 | 726 | fdes = (SCM_FSTREAM (exp))->fdes; |
073167ef LC |
727 | |
728 | #if (defined HAVE_TTYNAME) && (defined HAVE_POSIX) | |
b3ec3c64 | 729 | if (isatty (fdes)) |
eb372585 | 730 | scm_display (scm_ttyname (exp), port); |
b3ec3c64 | 731 | else |
82893676 | 732 | #endif /* HAVE_TTYNAME */ |
b3ec3c64 | 733 | scm_intprint (fdes, 10, port); |
0f2d19dd JB |
734 | } |
735 | else | |
736 | { | |
0607ebbf AW |
737 | scm_puts_unlocked (SCM_PTOBNAME (SCM_PTOBNUM (exp)), port); |
738 | scm_putc_unlocked (' ', port); | |
0345e278 | 739 | scm_uintprint ((scm_t_bits) SCM_PTAB_ENTRY (exp), 16, port); |
0f2d19dd | 740 | } |
0607ebbf | 741 | scm_putc_unlocked ('>', port); |
b3ec3c64 | 742 | return 1; |
0f2d19dd JB |
743 | } |
744 | ||
affc96b5 | 745 | static void fport_flush (SCM port); |
0f2d19dd | 746 | |
c2da2648 GH |
747 | /* fill a port's read-buffer with a single read. returns the first |
748 | char or EOF if end of file. */ | |
889975e5 | 749 | static scm_t_wchar |
affc96b5 | 750 | fport_fill_input (SCM port) |
0f2d19dd | 751 | { |
c014a02e | 752 | long count; |
92c2555f MV |
753 | scm_t_port *pt = SCM_PTAB_ENTRY (port); |
754 | scm_t_fport *fp = SCM_FSTREAM (port); | |
cb63cf9e | 755 | |
cb63cf9e JB |
756 | SCM_SYSCALL (count = read (fp->fdes, pt->read_buf, pt->read_buf_size)); |
757 | if (count == -1) | |
affc96b5 | 758 | scm_syserror ("fport_fill_input"); |
cb63cf9e | 759 | if (count == 0) |
889975e5 | 760 | return (scm_t_wchar) EOF; |
cb63cf9e JB |
761 | else |
762 | { | |
5c070ca7 | 763 | pt->read_pos = pt->read_buf; |
cb63cf9e | 764 | pt->read_end = pt->read_buf + count; |
5c070ca7 | 765 | return *pt->read_buf; |
cb63cf9e | 766 | } |
0f2d19dd JB |
767 | } |
768 | ||
0a94eb00 LC |
769 | static scm_t_off |
770 | fport_seek (SCM port, scm_t_off offset, int whence) | |
0f2d19dd | 771 | { |
92c2555f MV |
772 | scm_t_port *pt = SCM_PTAB_ENTRY (port); |
773 | scm_t_fport *fp = SCM_FSTREAM (port); | |
8ab3d8a0 KR |
774 | off_t_or_off64_t rv; |
775 | off_t_or_off64_t result; | |
7dcb364d GH |
776 | |
777 | if (pt->rw_active == SCM_PORT_WRITE) | |
778 | { | |
779 | if (offset != 0 || whence != SEEK_CUR) | |
780 | { | |
781 | fport_flush (port); | |
8ab3d8a0 | 782 | result = rv = lseek_or_lseek64 (fp->fdes, offset, whence); |
7dcb364d GH |
783 | } |
784 | else | |
785 | { | |
786 | /* read current position without disturbing the buffer. */ | |
8ab3d8a0 | 787 | rv = lseek_or_lseek64 (fp->fdes, offset, whence); |
7dcb364d GH |
788 | result = rv + (pt->write_pos - pt->write_buf); |
789 | } | |
790 | } | |
791 | else if (pt->rw_active == SCM_PORT_READ) | |
792 | { | |
793 | if (offset != 0 || whence != SEEK_CUR) | |
794 | { | |
795 | /* could expand to avoid a second seek. */ | |
4251ae2e | 796 | scm_end_input_unlocked (port); |
8ab3d8a0 | 797 | result = rv = lseek_or_lseek64 (fp->fdes, offset, whence); |
7dcb364d GH |
798 | } |
799 | else | |
800 | { | |
801 | /* read current position without disturbing the buffer | |
802 | (particularly the unread-char buffer). */ | |
8ab3d8a0 | 803 | rv = lseek_or_lseek64 (fp->fdes, offset, whence); |
7dcb364d GH |
804 | result = rv - (pt->read_end - pt->read_pos); |
805 | ||
806 | if (pt->read_buf == pt->putback_buf) | |
807 | result -= pt->saved_read_end - pt->saved_read_pos; | |
808 | } | |
809 | } | |
810 | else /* SCM_PORT_NEITHER */ | |
811 | { | |
8ab3d8a0 | 812 | result = rv = lseek_or_lseek64 (fp->fdes, offset, whence); |
7dcb364d | 813 | } |
cb8dfa3f | 814 | |
7dcb364d | 815 | if (rv == -1) |
affc96b5 | 816 | scm_syserror ("fport_seek"); |
7dcb364d | 817 | |
cb8dfa3f | 818 | return result; |
0f2d19dd JB |
819 | } |
820 | ||
840ae05d | 821 | static void |
f1ce9199 | 822 | fport_truncate (SCM port, scm_t_off length) |
840ae05d | 823 | { |
92c2555f | 824 | scm_t_fport *fp = SCM_FSTREAM (port); |
840ae05d JB |
825 | |
826 | if (ftruncate (fp->fdes, length) == -1) | |
827 | scm_syserror ("ftruncate"); | |
828 | } | |
829 | ||
31703ab8 | 830 | static void |
8aa011a1 | 831 | fport_write (SCM port, const void *data, size_t size) |
daa4a3f1 | 832 | #define FUNC_NAME "fport_write" |
31703ab8 | 833 | { |
0c6d2191 | 834 | /* this procedure tries to minimize the number of writes/flushes. */ |
92c2555f | 835 | scm_t_port *pt = SCM_PTAB_ENTRY (port); |
31703ab8 | 836 | |
0c6d2191 GH |
837 | if (pt->write_buf == &pt->shortbuf |
838 | || (pt->write_pos == pt->write_buf && size >= pt->write_buf_size)) | |
31703ab8 | 839 | { |
daa4a3f1 LC |
840 | /* Unbuffered port, or port with empty buffer and data won't fit in |
841 | buffer. */ | |
842 | if (full_write (SCM_FPORT_FDES (port), data, size) < size) | |
843 | SCM_SYSERROR; | |
844 | ||
0c6d2191 | 845 | return; |
31703ab8 | 846 | } |
d3639214 | 847 | |
0c6d2191 | 848 | { |
f1ce9199 | 849 | scm_t_off space = pt->write_end - pt->write_pos; |
0c6d2191 GH |
850 | |
851 | if (size <= space) | |
852 | { | |
853 | /* data fits in buffer. */ | |
854 | memcpy (pt->write_pos, data, size); | |
855 | pt->write_pos += size; | |
856 | if (pt->write_pos == pt->write_end) | |
857 | { | |
affc96b5 | 858 | fport_flush (port); |
0c6d2191 GH |
859 | /* we can skip the line-buffering check if nothing's buffered. */ |
860 | return; | |
861 | } | |
862 | } | |
863 | else | |
864 | { | |
865 | memcpy (pt->write_pos, data, space); | |
866 | pt->write_pos = pt->write_end; | |
867 | fport_flush (port); | |
868 | { | |
869 | const void *ptr = ((const char *) data) + space; | |
870 | size_t remaining = size - space; | |
871 | ||
872 | if (size >= pt->write_buf_size) | |
873 | { | |
daa4a3f1 LC |
874 | if (full_write (SCM_FPORT_FDES (port), ptr, remaining) |
875 | < remaining) | |
876 | SCM_SYSERROR; | |
0c6d2191 GH |
877 | return; |
878 | } | |
879 | else | |
880 | { | |
881 | memcpy (pt->write_pos, ptr, remaining); | |
882 | pt->write_pos += remaining; | |
883 | } | |
31703ab8 | 884 | } |
0c6d2191 | 885 | } |
31703ab8 | 886 | |
0c6d2191 GH |
887 | /* handle line buffering. */ |
888 | if ((SCM_CELL_WORD_0 (port) & SCM_BUFLINE) && memchr (data, '\n', size)) | |
889 | fport_flush (port); | |
890 | } | |
31703ab8 | 891 | } |
daa4a3f1 | 892 | #undef FUNC_NAME |
31703ab8 | 893 | |
cb63cf9e | 894 | static void |
affc96b5 | 895 | fport_flush (SCM port) |
0f2d19dd | 896 | { |
5335850d | 897 | size_t written; |
92c2555f MV |
898 | scm_t_port *pt = SCM_PTAB_ENTRY (port); |
899 | scm_t_fport *fp = SCM_FSTREAM (port); | |
5335850d | 900 | size_t count = pt->write_pos - pt->write_buf; |
cb63cf9e | 901 | |
5335850d LC |
902 | written = full_write (fp->fdes, pt->write_buf, count); |
903 | if (written < count) | |
904 | scm_syserror ("scm_flush"); | |
cb63cf9e | 905 | |
cb63cf9e | 906 | pt->write_pos = pt->write_buf; |
61e452ba | 907 | pt->rw_active = SCM_PORT_NEITHER; |
840ae05d JB |
908 | } |
909 | ||
283a1a0e | 910 | /* clear the read buffer and adjust the file position for unread bytes. */ |
840ae05d | 911 | static void |
affc96b5 | 912 | fport_end_input (SCM port, int offset) |
840ae05d | 913 | { |
92c2555f MV |
914 | scm_t_fport *fp = SCM_FSTREAM (port); |
915 | scm_t_port *pt = SCM_PTAB_ENTRY (port); | |
283a1a0e GH |
916 | |
917 | offset += pt->read_end - pt->read_pos; | |
840ae05d | 918 | |
840ae05d JB |
919 | if (offset > 0) |
920 | { | |
921 | pt->read_pos = pt->read_end; | |
922 | /* will throw error if unread-char used at beginning of file | |
923 | then attempting to write. seems correct. */ | |
924 | if (lseek (fp->fdes, -offset, SEEK_CUR) == -1) | |
affc96b5 | 925 | scm_syserror ("fport_end_input"); |
840ae05d | 926 | } |
61e452ba | 927 | pt->rw_active = SCM_PORT_NEITHER; |
8f29fbd0 JB |
928 | } |
929 | ||
5a771d5f AW |
930 | static void |
931 | close_the_fd (void *data) | |
932 | { | |
933 | scm_t_fport *fp = data; | |
934 | ||
935 | close (fp->fdes); | |
936 | /* There's already one exception. That's probably enough! */ | |
937 | errno = 0; | |
938 | } | |
939 | ||
6a2c4c81 | 940 | static int |
affc96b5 | 941 | fport_close (SCM port) |
6a2c4c81 | 942 | { |
92c2555f | 943 | scm_t_fport *fp = SCM_FSTREAM (port); |
cb63cf9e | 944 | int rv; |
840ae05d | 945 | |
5a771d5f AW |
946 | scm_dynwind_begin (0); |
947 | scm_dynwind_unwind_handler (close_the_fd, fp, 0); | |
affc96b5 | 948 | fport_flush (port); |
5a771d5f AW |
949 | scm_dynwind_end (); |
950 | ||
951 | scm_port_non_buffer (SCM_PTAB_ENTRY (port)); | |
952 | ||
953 | rv = close (fp->fdes); | |
954 | if (rv) | |
955 | /* It's not useful to retry after EINTR, as the file descriptor is | |
956 | in an undefined state. See http://lwn.net/Articles/365294/. | |
957 | Instead just throw an error if close fails, trusting that the fd | |
958 | was cleaned up. */ | |
959 | scm_syserror ("fport_close"); | |
960 | ||
961 | return 0; | |
6a2c4c81 JB |
962 | } |
963 | ||
1be6b49c | 964 | static size_t |
affc96b5 | 965 | fport_free (SCM port) |
b3ec3c64 | 966 | { |
affc96b5 | 967 | fport_close (port); |
b3ec3c64 MD |
968 | return 0; |
969 | } | |
970 | ||
92c2555f | 971 | static scm_t_bits |
b3ec3c64 MD |
972 | scm_make_fptob () |
973 | { | |
92c2555f | 974 | scm_t_bits tc = scm_make_port_type ("file", fport_fill_input, fport_write); |
a98bddfd | 975 | |
affc96b5 | 976 | scm_set_port_free (tc, fport_free); |
e841c3e0 | 977 | scm_set_port_print (tc, fport_print); |
affc96b5 GH |
978 | scm_set_port_flush (tc, fport_flush); |
979 | scm_set_port_end_input (tc, fport_end_input); | |
980 | scm_set_port_close (tc, fport_close); | |
981 | scm_set_port_seek (tc, fport_seek); | |
982 | scm_set_port_truncate (tc, fport_truncate); | |
983 | scm_set_port_input_waiting (tc, fport_input_waiting); | |
e140d85d | 984 | scm_set_port_setvbuf (tc, scm_fport_buffer_add); |
a98bddfd DH |
985 | |
986 | return tc; | |
b3ec3c64 | 987 | } |
0f2d19dd | 988 | |
3ace9a8e MW |
989 | /* We can't initialize the keywords from 'scm_init_fports', because |
990 | keywords haven't yet been initialized at that point. */ | |
991 | void | |
992 | scm_init_fports_keywords () | |
993 | { | |
994 | k_guess_encoding = scm_from_latin1_keyword ("guess-encoding"); | |
995 | k_encoding = scm_from_latin1_keyword ("encoding"); | |
996 | } | |
997 | ||
0f2d19dd JB |
998 | void |
999 | scm_init_fports () | |
0f2d19dd | 1000 | { |
a98bddfd DH |
1001 | scm_tc16_fport = scm_make_fptob (); |
1002 | ||
e11e83f3 MV |
1003 | scm_c_define ("_IOFBF", scm_from_int (_IOFBF)); |
1004 | scm_c_define ("_IOLBF", scm_from_int (_IOLBF)); | |
1005 | scm_c_define ("_IONBF", scm_from_int (_IONBF)); | |
a98bddfd | 1006 | |
69cac238 AW |
1007 | sys_file_port_name_canonicalization = scm_make_fluid (); |
1008 | scm_c_define ("%file-port-name-canonicalization", | |
1009 | sys_file_port_name_canonicalization); | |
1010 | ||
a98bddfd | 1011 | #include "libguile/fports.x" |
0f2d19dd | 1012 | } |
89e00824 ML |
1013 | |
1014 | /* | |
1015 | Local Variables: | |
1016 | c-file-style: "gnu" | |
1017 | End: | |
1018 | */ |