Commit | Line | Data |
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2b829bbb | 1 | /* Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2003, 2004, 2006 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 | 19 | \f |
d68fee48 JB |
20 | /* Headers. */ |
21 | ||
2b829bbb KR |
22 | #define _LARGEFILE64_SOURCE /* ask for stat64 etc */ |
23 | ||
bd515f37 RB |
24 | #if HAVE_CONFIG_H |
25 | # include <config.h> | |
26 | #endif | |
27 | ||
0f2d19dd | 28 | #include <stdio.h> |
e6e2e95a | 29 | #include <errno.h> |
8ab3d8a0 | 30 | #include <fcntl.h> /* for chsize on mingw */ |
e6e2e95a | 31 | |
fca43887 LC |
32 | #include <assert.h> |
33 | ||
a0599745 | 34 | #include "libguile/_scm.h" |
4e047c3e | 35 | #include "libguile/async.h" |
f0942910 | 36 | #include "libguile/eval.h" |
8ab3d8a0 | 37 | #include "libguile/fports.h" /* direct access for seek and truncate */ |
a0599745 | 38 | #include "libguile/objects.h" |
9511876f | 39 | #include "libguile/goops.h" |
a0599745 MD |
40 | #include "libguile/smob.h" |
41 | #include "libguile/chars.h" | |
185e369a | 42 | #include "libguile/dynwind.h" |
0f2d19dd | 43 | |
a0599745 MD |
44 | #include "libguile/keywords.h" |
45 | #include "libguile/root.h" | |
46 | #include "libguile/strings.h" | |
b42170a4 | 47 | #include "libguile/mallocs.h" |
a0599745 MD |
48 | #include "libguile/validate.h" |
49 | #include "libguile/ports.h" | |
3a5fb14d | 50 | #include "libguile/vectors.h" |
9de87eea | 51 | #include "libguile/fluids.h" |
0f2d19dd | 52 | |
bd9e24b3 GH |
53 | #ifdef HAVE_STRING_H |
54 | #include <string.h> | |
55 | #endif | |
56 | ||
ec65f5da MV |
57 | #ifdef HAVE_IO_H |
58 | #include <io.h> | |
59 | #endif | |
60 | ||
0f2d19dd JB |
61 | #ifdef HAVE_UNISTD_H |
62 | #include <unistd.h> | |
63 | #endif | |
64 | ||
95b88819 GH |
65 | #ifdef HAVE_SYS_IOCTL_H |
66 | #include <sys/ioctl.h> | |
67 | #endif | |
d68fee48 | 68 | |
8ab3d8a0 KR |
69 | /* Mingw (version 3.4.5, circa 2006) has ftruncate as an alias for chsize |
70 | already, but have this code here in case that wasn't so in past versions, | |
71 | or perhaps to help other minimal DOS environments. | |
72 | ||
73 | gnulib ftruncate.c has code using fcntl F_CHSIZE and F_FREESP, which | |
74 | might be possibilities if we've got other systems without ftruncate. */ | |
75 | ||
76 | #if HAVE_CHSIZE && ! HAVE_FTRUNCATE | |
82893676 | 77 | #define ftruncate(fd, size) chsize (fd, size) |
8ab3d8a0 KR |
78 | #undef HAVE_FTRUNCATE |
79 | #define HAVE_FTRUNCATE 1 | |
82893676 MG |
80 | #endif |
81 | ||
0f2d19dd | 82 | \f |
d68fee48 | 83 | /* The port kind table --- a dynamically resized array of port types. */ |
0f2d19dd JB |
84 | |
85 | ||
86 | /* scm_ptobs scm_numptob | |
87 | * implement a dynamicly resized array of ptob records. | |
88 | * Indexes into this table are used when generating type | |
89 | * tags for smobjects (if you know a tag you can get an index and conversely). | |
90 | */ | |
92c2555f | 91 | scm_t_ptob_descriptor *scm_ptobs; |
c014a02e | 92 | long scm_numptob; |
0f2d19dd | 93 | |
ee149d03 | 94 | /* GC marker for a port with stream of SCM type. */ |
0f2d19dd | 95 | SCM |
a284e297 | 96 | scm_markstream (SCM ptr) |
0f2d19dd JB |
97 | { |
98 | int openp; | |
f9a64404 | 99 | openp = SCM_CELL_WORD_0 (ptr) & SCM_OPN; |
0f2d19dd | 100 | if (openp) |
74a16888 | 101 | return SCM_PACK (SCM_STREAM (ptr)); |
0f2d19dd JB |
102 | else |
103 | return SCM_BOOL_F; | |
104 | } | |
105 | ||
f12733c9 | 106 | /* |
f12733c9 | 107 | * We choose to use an interface similar to the smob interface with |
affc96b5 | 108 | * fill_input and write as standard fields, passed to the port |
f12733c9 MD |
109 | * type constructor, and optional fields set by setters. |
110 | */ | |
111 | ||
70df8af6 | 112 | static void |
e81d98ec | 113 | flush_port_default (SCM port SCM_UNUSED) |
70df8af6 GH |
114 | { |
115 | } | |
116 | ||
117 | static void | |
e81d98ec | 118 | end_input_default (SCM port SCM_UNUSED, int offset SCM_UNUSED) |
70df8af6 GH |
119 | { |
120 | } | |
0f2d19dd | 121 | |
4c9419ac MV |
122 | static size_t |
123 | scm_port_free0 (SCM port) | |
124 | { | |
125 | return 0; | |
126 | } | |
127 | ||
92c2555f | 128 | scm_t_bits |
f12733c9 | 129 | scm_make_port_type (char *name, |
affc96b5 | 130 | int (*fill_input) (SCM port), |
8aa011a1 | 131 | void (*write) (SCM port, const void *data, size_t size)) |
0f2d19dd JB |
132 | { |
133 | char *tmp; | |
134 | if (255 <= scm_numptob) | |
135 | goto ptoberr; | |
9de87eea | 136 | SCM_CRITICAL_SECTION_START; |
fca43887 LC |
137 | tmp = (char *) scm_gc_realloc ((char *) scm_ptobs, |
138 | scm_numptob * sizeof (scm_t_ptob_descriptor), | |
139 | (1 + scm_numptob) | |
140 | * sizeof (scm_t_ptob_descriptor), | |
141 | "port-type"); | |
0f2d19dd JB |
142 | if (tmp) |
143 | { | |
92c2555f | 144 | scm_ptobs = (scm_t_ptob_descriptor *) tmp; |
affc96b5 | 145 | |
f12733c9 MD |
146 | scm_ptobs[scm_numptob].name = name; |
147 | scm_ptobs[scm_numptob].mark = 0; | |
4c9419ac | 148 | scm_ptobs[scm_numptob].free = scm_port_free0; |
f12733c9 MD |
149 | scm_ptobs[scm_numptob].print = scm_port_print; |
150 | scm_ptobs[scm_numptob].equalp = 0; | |
affc96b5 GH |
151 | scm_ptobs[scm_numptob].close = 0; |
152 | ||
153 | scm_ptobs[scm_numptob].write = write; | |
70df8af6 | 154 | scm_ptobs[scm_numptob].flush = flush_port_default; |
affc96b5 | 155 | |
70df8af6 | 156 | scm_ptobs[scm_numptob].end_input = end_input_default; |
affc96b5 GH |
157 | scm_ptobs[scm_numptob].fill_input = fill_input; |
158 | scm_ptobs[scm_numptob].input_waiting = 0; | |
159 | ||
f12733c9 | 160 | scm_ptobs[scm_numptob].seek = 0; |
affc96b5 GH |
161 | scm_ptobs[scm_numptob].truncate = 0; |
162 | ||
0f2d19dd JB |
163 | scm_numptob++; |
164 | } | |
9de87eea | 165 | SCM_CRITICAL_SECTION_END; |
0f2d19dd | 166 | if (!tmp) |
2500356c DH |
167 | { |
168 | ptoberr: | |
169 | scm_memory_error ("scm_make_port_type"); | |
170 | } | |
f12733c9 MD |
171 | /* Make a class object if Goops is present */ |
172 | if (scm_port_class) | |
173 | scm_make_port_classes (scm_numptob - 1, SCM_PTOBNAME (scm_numptob - 1)); | |
0f2d19dd JB |
174 | return scm_tc7_port + (scm_numptob - 1) * 256; |
175 | } | |
176 | ||
f12733c9 | 177 | void |
23f2b9a3 | 178 | scm_set_port_mark (scm_t_bits tc, SCM (*mark) (SCM)) |
f12733c9 MD |
179 | { |
180 | scm_ptobs[SCM_TC2PTOBNUM (tc)].mark = mark; | |
181 | } | |
182 | ||
183 | void | |
23f2b9a3 | 184 | scm_set_port_free (scm_t_bits tc, size_t (*free) (SCM)) |
f12733c9 MD |
185 | { |
186 | scm_ptobs[SCM_TC2PTOBNUM (tc)].free = free; | |
187 | } | |
188 | ||
189 | void | |
23f2b9a3 | 190 | scm_set_port_print (scm_t_bits tc, int (*print) (SCM exp, SCM port, |
f12733c9 MD |
191 | scm_print_state *pstate)) |
192 | { | |
193 | scm_ptobs[SCM_TC2PTOBNUM (tc)].print = print; | |
194 | } | |
195 | ||
196 | void | |
23f2b9a3 | 197 | scm_set_port_equalp (scm_t_bits tc, SCM (*equalp) (SCM, SCM)) |
f12733c9 MD |
198 | { |
199 | scm_ptobs[SCM_TC2PTOBNUM (tc)].equalp = equalp; | |
200 | } | |
201 | ||
31703ab8 | 202 | void |
23f2b9a3 | 203 | scm_set_port_flush (scm_t_bits tc, void (*flush) (SCM port)) |
31703ab8 | 204 | { |
affc96b5 | 205 | scm_ptobs[SCM_TC2PTOBNUM (tc)].flush = flush; |
31703ab8 GH |
206 | } |
207 | ||
f12733c9 | 208 | void |
23f2b9a3 | 209 | scm_set_port_end_input (scm_t_bits tc, void (*end_input) (SCM port, int offset)) |
f12733c9 | 210 | { |
affc96b5 | 211 | scm_ptobs[SCM_TC2PTOBNUM (tc)].end_input = end_input; |
f12733c9 MD |
212 | } |
213 | ||
214 | void | |
23f2b9a3 | 215 | scm_set_port_close (scm_t_bits tc, int (*close) (SCM)) |
f12733c9 | 216 | { |
affc96b5 | 217 | scm_ptobs[SCM_TC2PTOBNUM (tc)].close = close; |
f12733c9 MD |
218 | } |
219 | ||
220 | void | |
23f2b9a3 | 221 | scm_set_port_seek (scm_t_bits tc, off_t (*seek) (SCM port, |
f12733c9 MD |
222 | off_t OFFSET, |
223 | int WHENCE)) | |
224 | { | |
225 | scm_ptobs[SCM_TC2PTOBNUM (tc)].seek = seek; | |
226 | } | |
227 | ||
228 | void | |
23f2b9a3 | 229 | scm_set_port_truncate (scm_t_bits tc, void (*truncate) (SCM port, off_t length)) |
f12733c9 | 230 | { |
affc96b5 | 231 | scm_ptobs[SCM_TC2PTOBNUM (tc)].truncate = truncate; |
f12733c9 MD |
232 | } |
233 | ||
234 | void | |
23f2b9a3 | 235 | scm_set_port_input_waiting (scm_t_bits tc, int (*input_waiting) (SCM)) |
f12733c9 | 236 | { |
affc96b5 | 237 | scm_ptobs[SCM_TC2PTOBNUM (tc)].input_waiting = input_waiting; |
f12733c9 MD |
238 | } |
239 | ||
0f2d19dd | 240 | \f |
0f2d19dd | 241 | |
3b3b36dd | 242 | SCM_DEFINE (scm_char_ready_p, "char-ready?", 0, 1, 0, |
1e6808ea MG |
243 | (SCM port), |
244 | "Return @code{#t} if a character is ready on input @var{port}\n" | |
245 | "and return @code{#f} otherwise. If @code{char-ready?} returns\n" | |
246 | "@code{#t} then the next @code{read-char} operation on\n" | |
247 | "@var{port} is guaranteed not to hang. If @var{port} is a file\n" | |
248 | "port at end of file then @code{char-ready?} returns @code{#t}.\n" | |
c2dfff19 KR |
249 | "\n" |
250 | "@code{char-ready?} exists to make it possible for a\n" | |
1e6808ea MG |
251 | "program to accept characters from interactive ports without\n" |
252 | "getting stuck waiting for input. Any input editors associated\n" | |
253 | "with such ports must make sure that characters whose existence\n" | |
254 | "has been asserted by @code{char-ready?} cannot be rubbed out.\n" | |
255 | "If @code{char-ready?} were to return @code{#f} at end of file,\n" | |
256 | "a port at end of file would be indistinguishable from an\n" | |
c2dfff19 | 257 | "interactive port that has no ready characters.") |
1bbd0b84 | 258 | #define FUNC_NAME s_scm_char_ready_p |
0f2d19dd | 259 | { |
92c2555f | 260 | scm_t_port *pt; |
6c951427 | 261 | |
0f2d19dd | 262 | if (SCM_UNBNDP (port)) |
9de87eea | 263 | port = scm_current_input_port (); |
0f2d19dd | 264 | else |
34d19ef6 | 265 | SCM_VALIDATE_OPINPORT (1, port); |
d68fee48 | 266 | |
ae4c4016 JB |
267 | pt = SCM_PTAB_ENTRY (port); |
268 | ||
6c951427 GH |
269 | /* if the current read buffer is filled, or the |
270 | last pushed-back char has been read and the saved buffer is | |
271 | filled, result is true. */ | |
272 | if (pt->read_pos < pt->read_end | |
273 | || (pt->read_buf == pt->putback_buf | |
274 | && pt->saved_read_pos < pt->saved_read_end)) | |
0f2d19dd | 275 | return SCM_BOOL_T; |
ee149d03 JB |
276 | else |
277 | { | |
92c2555f | 278 | scm_t_ptob_descriptor *ptob = &scm_ptobs[SCM_PTOBNUM (port)]; |
ee149d03 | 279 | |
affc96b5 | 280 | if (ptob->input_waiting) |
7888309b | 281 | return scm_from_bool(ptob->input_waiting (port)); |
ee149d03 | 282 | else |
6c951427 | 283 | return SCM_BOOL_T; |
ee149d03 | 284 | } |
0f2d19dd | 285 | } |
1bbd0b84 | 286 | #undef FUNC_NAME |
0f2d19dd | 287 | |
c2da2648 GH |
288 | /* move up to read_len chars from port's putback and/or read buffers |
289 | into memory starting at dest. returns the number of chars moved. */ | |
290 | size_t scm_take_from_input_buffers (SCM port, char *dest, size_t read_len) | |
291 | { | |
92c2555f | 292 | scm_t_port *pt = SCM_PTAB_ENTRY (port); |
c2da2648 GH |
293 | size_t chars_read = 0; |
294 | size_t from_buf = min (pt->read_end - pt->read_pos, read_len); | |
295 | ||
296 | if (from_buf > 0) | |
297 | { | |
298 | memcpy (dest, pt->read_pos, from_buf); | |
299 | pt->read_pos += from_buf; | |
300 | chars_read += from_buf; | |
301 | read_len -= from_buf; | |
302 | dest += from_buf; | |
303 | } | |
304 | ||
305 | /* if putback was active, try the real input buffer too. */ | |
306 | if (pt->read_buf == pt->putback_buf) | |
307 | { | |
308 | from_buf = min (pt->saved_read_end - pt->saved_read_pos, read_len); | |
309 | if (from_buf > 0) | |
310 | { | |
311 | memcpy (dest, pt->saved_read_pos, from_buf); | |
312 | pt->saved_read_pos += from_buf; | |
313 | chars_read += from_buf; | |
314 | } | |
315 | } | |
316 | return chars_read; | |
317 | } | |
318 | ||
6c951427 | 319 | /* Clear a port's read buffers, returning the contents. */ |
a1ec6916 | 320 | SCM_DEFINE (scm_drain_input, "drain-input", 1, 0, 0, |
1bbd0b84 | 321 | (SCM port), |
4a151b3d GH |
322 | "This procedure clears a port's input buffers, similar\n" |
323 | "to the way that force-output clears the output buffer. The\n" | |
324 | "contents of the buffers are returned as a single string, e.g.,\n" | |
325 | "\n" | |
326 | "@lisp\n" | |
327 | "(define p (open-input-file ...))\n" | |
328 | "(drain-input p) => empty string, nothing buffered yet.\n" | |
329 | "(unread-char (read-char p) p)\n" | |
330 | "(drain-input p) => initial chars from p, up to the buffer size.\n" | |
331 | "@end lisp\n\n" | |
332 | "Draining the buffers may be useful for cleanly finishing\n" | |
333 | "buffered I/O so that the file descriptor can be used directly\n" | |
334 | "for further input.") | |
1bbd0b84 | 335 | #define FUNC_NAME s_scm_drain_input |
ee149d03 | 336 | { |
840ae05d | 337 | SCM result; |
3a5fb14d | 338 | char *data; |
28a6e1b0 | 339 | scm_t_port *pt; |
c014a02e | 340 | long count; |
ee149d03 | 341 | |
34d19ef6 | 342 | SCM_VALIDATE_OPINPORT (1, port); |
28a6e1b0 | 343 | pt = SCM_PTAB_ENTRY (port); |
840ae05d | 344 | |
6c951427 GH |
345 | count = pt->read_end - pt->read_pos; |
346 | if (pt->read_buf == pt->putback_buf) | |
347 | count += pt->saved_read_end - pt->saved_read_pos; | |
840ae05d | 348 | |
3a5fb14d MV |
349 | result = scm_i_make_string (count, &data); |
350 | scm_take_from_input_buffers (port, data, count); | |
840ae05d | 351 | return result; |
ee149d03 | 352 | } |
1bbd0b84 | 353 | #undef FUNC_NAME |
0f2d19dd JB |
354 | |
355 | \f | |
d68fee48 | 356 | /* Standard ports --- current input, output, error, and more(!). */ |
0f2d19dd | 357 | |
9de87eea MV |
358 | static SCM cur_inport_fluid; |
359 | static SCM cur_outport_fluid; | |
360 | static SCM cur_errport_fluid; | |
361 | static SCM cur_loadport_fluid; | |
362 | ||
3b3b36dd | 363 | SCM_DEFINE (scm_current_input_port, "current-input-port", 0, 0, 0, |
e1546b65 MG |
364 | (), |
365 | "Return the current input port. This is the default port used\n" | |
366 | "by many input procedures. Initially, @code{current-input-port}\n" | |
367 | "returns the @dfn{standard input} in Unix and C terminology.") | |
1bbd0b84 | 368 | #define FUNC_NAME s_scm_current_input_port |
0f2d19dd | 369 | { |
9de87eea | 370 | return scm_fluid_ref (cur_inport_fluid); |
0f2d19dd | 371 | } |
1bbd0b84 | 372 | #undef FUNC_NAME |
0f2d19dd | 373 | |
3b3b36dd | 374 | SCM_DEFINE (scm_current_output_port, "current-output-port", 0, 0, 0, |
e1546b65 MG |
375 | (), |
376 | "Return the current output port. This is the default port used\n" | |
9401323e | 377 | "by many output procedures. Initially,\n" |
e1546b65 MG |
378 | "@code{current-output-port} returns the @dfn{standard output} in\n" |
379 | "Unix and C terminology.") | |
1bbd0b84 | 380 | #define FUNC_NAME s_scm_current_output_port |
0f2d19dd | 381 | { |
9de87eea | 382 | return scm_fluid_ref (cur_outport_fluid); |
0f2d19dd | 383 | } |
1bbd0b84 | 384 | #undef FUNC_NAME |
0f2d19dd | 385 | |
3b3b36dd | 386 | SCM_DEFINE (scm_current_error_port, "current-error-port", 0, 0, 0, |
1bbd0b84 | 387 | (), |
b380b885 MD |
388 | "Return the port to which errors and warnings should be sent (the\n" |
389 | "@dfn{standard error} in Unix and C terminology).") | |
1bbd0b84 | 390 | #define FUNC_NAME s_scm_current_error_port |
0f2d19dd | 391 | { |
9de87eea | 392 | return scm_fluid_ref (cur_errport_fluid); |
0f2d19dd | 393 | } |
1bbd0b84 | 394 | #undef FUNC_NAME |
0f2d19dd | 395 | |
3b3b36dd | 396 | SCM_DEFINE (scm_current_load_port, "current-load-port", 0, 0, 0, |
e1546b65 | 397 | (), |
b450f070 | 398 | "Return the current-load-port.\n" |
e1546b65 | 399 | "The load port is used internally by @code{primitive-load}.") |
1bbd0b84 | 400 | #define FUNC_NAME s_scm_current_load_port |
31614d8e | 401 | { |
9de87eea | 402 | return scm_fluid_ref (cur_loadport_fluid); |
31614d8e | 403 | } |
1bbd0b84 | 404 | #undef FUNC_NAME |
31614d8e | 405 | |
3b3b36dd | 406 | SCM_DEFINE (scm_set_current_input_port, "set-current-input-port", 1, 0, 0, |
1bbd0b84 | 407 | (SCM port), |
8f85c0c6 NJ |
408 | "@deffnx {Scheme Procedure} set-current-output-port port\n" |
409 | "@deffnx {Scheme Procedure} set-current-error-port port\n" | |
b380b885 MD |
410 | "Change the ports returned by @code{current-input-port},\n" |
411 | "@code{current-output-port} and @code{current-error-port}, respectively,\n" | |
412 | "so that they use the supplied @var{port} for input or output.") | |
1bbd0b84 | 413 | #define FUNC_NAME s_scm_set_current_input_port |
0f2d19dd | 414 | { |
9de87eea | 415 | SCM oinp = scm_fluid_ref (cur_inport_fluid); |
34d19ef6 | 416 | SCM_VALIDATE_OPINPORT (1, port); |
9de87eea | 417 | scm_fluid_set_x (cur_inport_fluid, port); |
0f2d19dd JB |
418 | return oinp; |
419 | } | |
1bbd0b84 | 420 | #undef FUNC_NAME |
0f2d19dd JB |
421 | |
422 | ||
3b3b36dd | 423 | SCM_DEFINE (scm_set_current_output_port, "set-current-output-port", 1, 0, 0, |
e1546b65 MG |
424 | (SCM port), |
425 | "Set the current default output port to @var{port}.") | |
1bbd0b84 | 426 | #define FUNC_NAME s_scm_set_current_output_port |
0f2d19dd | 427 | { |
9de87eea | 428 | SCM ooutp = scm_fluid_ref (cur_outport_fluid); |
78446828 | 429 | port = SCM_COERCE_OUTPORT (port); |
34d19ef6 | 430 | SCM_VALIDATE_OPOUTPORT (1, port); |
9de87eea | 431 | scm_fluid_set_x (cur_outport_fluid, port); |
0f2d19dd JB |
432 | return ooutp; |
433 | } | |
1bbd0b84 | 434 | #undef FUNC_NAME |
0f2d19dd JB |
435 | |
436 | ||
3b3b36dd | 437 | SCM_DEFINE (scm_set_current_error_port, "set-current-error-port", 1, 0, 0, |
e1546b65 MG |
438 | (SCM port), |
439 | "Set the current default error port to @var{port}.") | |
1bbd0b84 | 440 | #define FUNC_NAME s_scm_set_current_error_port |
0f2d19dd | 441 | { |
9de87eea | 442 | SCM oerrp = scm_fluid_ref (cur_errport_fluid); |
78446828 | 443 | port = SCM_COERCE_OUTPORT (port); |
34d19ef6 | 444 | SCM_VALIDATE_OPOUTPORT (1, port); |
9de87eea | 445 | scm_fluid_set_x (cur_errport_fluid, port); |
0f2d19dd JB |
446 | return oerrp; |
447 | } | |
1bbd0b84 | 448 | #undef FUNC_NAME |
0f2d19dd | 449 | |
185e369a | 450 | void |
661ae7ab | 451 | scm_dynwind_current_input_port (SCM port) |
9de87eea | 452 | #define FUNC_NAME NULL |
185e369a | 453 | { |
9de87eea | 454 | SCM_VALIDATE_OPINPORT (1, port); |
661ae7ab | 455 | scm_dynwind_fluid (cur_inport_fluid, port); |
185e369a | 456 | } |
9de87eea | 457 | #undef FUNC_NAME |
185e369a MV |
458 | |
459 | void | |
661ae7ab | 460 | scm_dynwind_current_output_port (SCM port) |
9de87eea | 461 | #define FUNC_NAME NULL |
185e369a | 462 | { |
9de87eea MV |
463 | port = SCM_COERCE_OUTPORT (port); |
464 | SCM_VALIDATE_OPOUTPORT (1, port); | |
661ae7ab | 465 | scm_dynwind_fluid (cur_outport_fluid, port); |
185e369a | 466 | } |
9de87eea | 467 | #undef FUNC_NAME |
185e369a MV |
468 | |
469 | void | |
661ae7ab | 470 | scm_dynwind_current_error_port (SCM port) |
9de87eea MV |
471 | #define FUNC_NAME NULL |
472 | { | |
473 | port = SCM_COERCE_OUTPORT (port); | |
474 | SCM_VALIDATE_OPOUTPORT (1, port); | |
661ae7ab | 475 | scm_dynwind_fluid (cur_errport_fluid, port); |
9de87eea MV |
476 | } |
477 | #undef FUNC_NAME | |
478 | ||
479 | void | |
661ae7ab | 480 | scm_i_dynwind_current_load_port (SCM port) |
185e369a | 481 | { |
661ae7ab | 482 | scm_dynwind_fluid (cur_loadport_fluid, port); |
185e369a MV |
483 | } |
484 | ||
0f2d19dd | 485 | \f |
840ae05d | 486 | /* The port table --- an array of pointers to ports. */ |
0f2d19dd | 487 | |
fca43887 | 488 | scm_t_port **scm_i_port_table = NULL; |
0f2d19dd | 489 | |
fca43887 LC |
490 | long scm_i_port_table_size = 0; /* Number of ports in SCM_I_PORT_TABLE. */ |
491 | long scm_i_port_table_room = 20; /* Actual size of the array. */ | |
0f2d19dd | 492 | |
9de87eea | 493 | scm_i_pthread_mutex_t scm_i_port_table_mutex = SCM_I_PTHREAD_MUTEX_INITIALIZER; |
b9ad392e | 494 | |
651a0735 LC |
495 | \f |
496 | /* Port finalization. */ | |
497 | ||
1cc91f1b | 498 | |
651a0735 LC |
499 | static void finalize_port (GC_PTR, GC_PTR); |
500 | ||
501 | /* Register a finalizer for PORT, if needed by its port type. */ | |
502 | static SCM_C_INLINE_KEYWORD void | |
503 | register_finalizer_for_port (SCM port) | |
504 | { | |
505 | long port_type; | |
506 | ||
507 | port_type = SCM_TC2PTOBNUM (SCM_CELL_TYPE (port)); | |
508 | if (scm_ptobs[port_type].free) | |
509 | { | |
510 | GC_finalization_proc prev_finalizer; | |
511 | GC_PTR prev_finalization_data; | |
512 | ||
513 | GC_REGISTER_FINALIZER_NO_ORDER (SCM2PTR (port), finalize_port, 0, | |
514 | &prev_finalizer, | |
515 | &prev_finalization_data); | |
516 | } | |
517 | } | |
518 | ||
519 | /* Finalize the object (a port) pointed to by PTR. */ | |
520 | static void | |
521 | finalize_port (GC_PTR ptr, GC_PTR data) | |
522 | { | |
523 | long port_type; | |
524 | SCM port = PTR2SCM (ptr); | |
525 | ||
526 | if (!SCM_PORTP (port)) | |
527 | abort (); | |
528 | ||
529 | if (SCM_OPENP (port)) | |
530 | { | |
531 | if (SCM_REVEALED (port) > 0) | |
532 | /* Keep "revealed" ports alive and re-register a finalizer. */ | |
533 | register_finalizer_for_port (port); | |
534 | else | |
535 | { | |
536 | port_type = SCM_TC2PTOBNUM (SCM_CELL_TYPE (port)); | |
537 | if (port_type >= scm_numptob) | |
538 | abort (); | |
539 | ||
540 | if (scm_ptobs[port_type].free) | |
541 | /* Yes, I really do mean `.free' rather than `.close'. `.close' | |
542 | is for explicit `close-port' by user. */ | |
543 | scm_ptobs[port_type].free (port); | |
544 | ||
545 | SCM_SETSTREAM (port, 0); | |
546 | SCM_CLR_PORT_OPEN_FLAG (port); | |
547 | scm_remove_from_port_table (port); | |
548 | ||
549 | scm_gc_ports_collected++; | |
550 | } | |
551 | } | |
552 | } | |
553 | ||
554 | ||
555 | ||
556 | \f | |
557 | ||
558 | /* This function is not and should not be thread safe. */ | |
da220f27 HWN |
559 | SCM |
560 | scm_new_port_table_entry (scm_t_bits tag) | |
402788a9 | 561 | #define FUNC_NAME "scm_new_port_table_entry" |
0f2d19dd | 562 | { |
85835e59 HWN |
563 | /* |
564 | We initialize the cell to empty, this is in case scm_gc_calloc | |
565 | triggers GC ; we don't want the GC to scan a half-finished Z. | |
566 | */ | |
567 | ||
67329a9e | 568 | SCM z = scm_cons (SCM_EOL, SCM_EOL); |
39e8f371 | 569 | scm_t_port *entry = (scm_t_port *) scm_gc_calloc (sizeof (scm_t_port), "port"); |
67329a9e | 570 | if (scm_i_port_table_size == scm_i_port_table_room) |
0f2d19dd | 571 | { |
4c9419ac | 572 | /* initial malloc is in gc.c. this doesn't use scm_gc_malloc etc., |
c6c79933 | 573 | since it can never be freed during gc. */ |
fca43887 | 574 | /* XXX (Ludo): Why not do it actually? */ |
6a4be329 | 575 | size_t new_size = scm_i_port_table_room * 2; |
651a0735 LC |
576 | /* XXX (Ludo): Can we use `GC_REALLOC' with |
577 | `GC_MALLOC_ATOMIC'-allocated data? */ | |
fca43887 LC |
578 | void *newt = scm_gc_realloc ((char *) scm_i_port_table, |
579 | scm_i_port_table_room * sizeof (scm_t_port *), | |
6a4be329 | 580 | new_size * sizeof (scm_t_port *), |
fca43887 | 581 | "port-table"); |
67329a9e | 582 | scm_i_port_table = (scm_t_port **) newt; |
6a4be329 | 583 | scm_i_port_table_room = new_size; |
0f2d19dd | 584 | } |
840ae05d | 585 | |
67329a9e | 586 | entry->entry = scm_i_port_table_size; |
5f16b897 | 587 | |
840ae05d | 588 | entry->file_name = SCM_BOOL_F; |
61e452ba | 589 | entry->rw_active = SCM_PORT_NEITHER; |
5f16b897 | 590 | |
67329a9e HWN |
591 | scm_i_port_table[scm_i_port_table_size] = entry; |
592 | scm_i_port_table_size++; | |
840ae05d | 593 | |
da220f27 HWN |
594 | entry->port = z; |
595 | SCM_SET_CELL_TYPE(z, tag); | |
596 | SCM_SETPTAB_ENTRY(z, entry); | |
651a0735 LC |
597 | |
598 | /* For each new port, register a finalizer so that it port type's free | |
599 | function can be invoked eventually. */ | |
600 | register_finalizer_for_port (z); | |
601 | ||
da220f27 | 602 | return z; |
0f2d19dd | 603 | } |
c6c79933 | 604 | #undef FUNC_NAME |
0f2d19dd | 605 | |
67329a9e HWN |
606 | #if SCM_ENABLE_DEPRECATED==1 |
607 | SCM_API scm_t_port * | |
608 | scm_add_to_port_table (SCM port) | |
609 | { | |
610 | SCM z = scm_new_port_table_entry (scm_tc7_port); | |
611 | scm_t_port * pt = SCM_PTAB_ENTRY(z); | |
612 | ||
613 | pt->port = port; | |
614 | SCM_SETCAR(z, SCM_EOL); | |
615 | SCM_SETCDR(z, SCM_EOL); | |
85835e59 | 616 | SCM_SETPTAB_ENTRY (port, pt); |
67329a9e HWN |
617 | return pt; |
618 | } | |
619 | #endif | |
620 | ||
621 | ||
6c951427 | 622 | /* Remove a port from the table and destroy it. */ |
b9ad392e MD |
623 | |
624 | /* This function is not and should not be thread safe. */ | |
625 | ||
0f2d19dd | 626 | void |
a284e297 | 627 | scm_remove_from_port_table (SCM port) |
db4b4ca6 | 628 | #define FUNC_NAME "scm_remove_from_port_table" |
0f2d19dd | 629 | { |
92c2555f | 630 | scm_t_port *p = SCM_PTAB_ENTRY (port); |
c014a02e | 631 | long i = p->entry; |
6c951427 | 632 | |
67329a9e | 633 | if (i >= scm_i_port_table_size) |
1afff620 | 634 | SCM_MISC_ERROR ("Port not in table: ~S", scm_list_1 (port)); |
6c951427 | 635 | if (p->putback_buf) |
4c9419ac MV |
636 | scm_gc_free (p->putback_buf, p->putback_buf_size, "putback buffer"); |
637 | scm_gc_free (p, sizeof (scm_t_port), "port"); | |
ee1e7e13 MD |
638 | /* Since we have just freed slot i we can shrink the table by moving |
639 | the last entry to that slot... */ | |
67329a9e | 640 | if (i < scm_i_port_table_size - 1) |
0f2d19dd | 641 | { |
67329a9e HWN |
642 | scm_i_port_table[i] = scm_i_port_table[scm_i_port_table_size - 1]; |
643 | scm_i_port_table[i]->entry = i; | |
0f2d19dd | 644 | } |
0f2d19dd | 645 | SCM_SETPTAB_ENTRY (port, 0); |
67329a9e | 646 | scm_i_port_table_size--; |
0f2d19dd | 647 | } |
db4b4ca6 DH |
648 | #undef FUNC_NAME |
649 | ||
0f2d19dd | 650 | |
fea6b4ea | 651 | #ifdef GUILE_DEBUG |
b450f070 | 652 | /* Functions for debugging. */ |
1cc91f1b | 653 | |
3b3b36dd | 654 | SCM_DEFINE (scm_pt_size, "pt-size", 0, 0, 0, |
b450f070 | 655 | (), |
1e6808ea | 656 | "Return the number of ports in the port table. @code{pt-size}\n" |
5352393c | 657 | "is only included in @code{--enable-guile-debug} builds.") |
1bbd0b84 | 658 | #define FUNC_NAME s_scm_pt_size |
0f2d19dd | 659 | { |
e11e83f3 | 660 | return scm_from_int (scm_i_port_table_size); |
0f2d19dd | 661 | } |
1bbd0b84 | 662 | #undef FUNC_NAME |
0f2d19dd | 663 | |
3b3b36dd | 664 | SCM_DEFINE (scm_pt_member, "pt-member", 1, 0, 0, |
b450f070 | 665 | (SCM index), |
1e6808ea | 666 | "Return the port at @var{index} in the port table.\n" |
5352393c MG |
667 | "@code{pt-member} is only included in\n" |
668 | "@code{--enable-guile-debug} builds.") | |
1bbd0b84 | 669 | #define FUNC_NAME s_scm_pt_member |
0f2d19dd | 670 | { |
a55c2b68 MV |
671 | size_t i = scm_to_size_t (index); |
672 | if (i >= scm_i_port_table_size) | |
0f2d19dd JB |
673 | return SCM_BOOL_F; |
674 | else | |
67329a9e | 675 | return scm_i_port_table[i]->port; |
0f2d19dd | 676 | } |
1bbd0b84 | 677 | #undef FUNC_NAME |
0f2d19dd JB |
678 | #endif |
679 | ||
70df8af6 | 680 | void |
92c2555f | 681 | scm_port_non_buffer (scm_t_port *pt) |
70df8af6 GH |
682 | { |
683 | pt->read_pos = pt->read_buf = pt->read_end = &pt->shortbuf; | |
684 | pt->write_buf = pt->write_pos = &pt->shortbuf; | |
685 | pt->read_buf_size = pt->write_buf_size = 1; | |
686 | pt->write_end = pt->write_buf + pt->write_buf_size; | |
687 | } | |
0f2d19dd | 688 | |
d68fee48 JB |
689 | \f |
690 | /* Revealed counts --- an oddity inherited from SCSH. */ | |
691 | ||
8b13c6b3 GH |
692 | /* Find a port in the table and return its revealed count. |
693 | Also used by the garbage collector. | |
0f2d19dd | 694 | */ |
1cc91f1b | 695 | |
0f2d19dd | 696 | int |
a284e297 | 697 | scm_revealed_count (SCM port) |
0f2d19dd JB |
698 | { |
699 | return SCM_REVEALED(port); | |
700 | } | |
701 | ||
702 | ||
703 | ||
704 | /* Return the revealed count for a port. */ | |
705 | ||
3b3b36dd | 706 | SCM_DEFINE (scm_port_revealed, "port-revealed", 1, 0, 0, |
1bbd0b84 | 707 | (SCM port), |
1e6808ea | 708 | "Return the revealed count for @var{port}.") |
1bbd0b84 | 709 | #define FUNC_NAME s_scm_port_revealed |
0f2d19dd | 710 | { |
78446828 | 711 | port = SCM_COERCE_OUTPORT (port); |
34d19ef6 | 712 | SCM_VALIDATE_OPENPORT (1, port); |
e11e83f3 | 713 | return scm_from_int (scm_revealed_count (port)); |
0f2d19dd | 714 | } |
1bbd0b84 | 715 | #undef FUNC_NAME |
0f2d19dd JB |
716 | |
717 | /* Set the revealed count for a port. */ | |
3b3b36dd | 718 | SCM_DEFINE (scm_set_port_revealed_x, "set-port-revealed!", 2, 0, 0, |
1bbd0b84 | 719 | (SCM port, SCM rcount), |
b450f070 | 720 | "Sets the revealed count for a port to a given value.\n" |
b380b885 | 721 | "The return value is unspecified.") |
1bbd0b84 | 722 | #define FUNC_NAME s_scm_set_port_revealed_x |
0f2d19dd | 723 | { |
78446828 | 724 | port = SCM_COERCE_OUTPORT (port); |
34d19ef6 | 725 | SCM_VALIDATE_OPENPORT (1, port); |
a55c2b68 | 726 | SCM_REVEALED (port) = scm_to_int (rcount); |
8b13c6b3 | 727 | return SCM_UNSPECIFIED; |
0f2d19dd | 728 | } |
1bbd0b84 | 729 | #undef FUNC_NAME |
0f2d19dd | 730 | |
d68fee48 JB |
731 | |
732 | \f | |
733 | /* Retrieving a port's mode. */ | |
734 | ||
eadd48de GH |
735 | /* Return the flags that characterize a port based on the mode |
736 | * string used to open a file for that port. | |
737 | * | |
738 | * See PORT FLAGS in scm.h | |
739 | */ | |
740 | ||
3a5fb14d MV |
741 | static long |
742 | scm_i_mode_bits_n (const char *modes, size_t n) | |
743 | { | |
744 | return (SCM_OPN | |
745 | | (memchr (modes, 'r', n) || memchr (modes, '+', n) ? SCM_RDNG : 0) | |
746 | | ( memchr (modes, 'w', n) | |
747 | || memchr (modes, 'a', n) | |
748 | || memchr (modes, '+', n) ? SCM_WRTNG : 0) | |
749 | | (memchr (modes, '0', n) ? SCM_BUF0 : 0) | |
750 | | (memchr (modes, 'l', n) ? SCM_BUFLINE : 0)); | |
751 | } | |
752 | ||
eadd48de | 753 | long |
a284e297 | 754 | scm_mode_bits (char *modes) |
eadd48de | 755 | { |
3a5fb14d | 756 | return scm_i_mode_bits_n (modes, strlen (modes)); |
eadd48de GH |
757 | } |
758 | ||
d617ee18 MV |
759 | long |
760 | scm_i_mode_bits (SCM modes) | |
761 | { | |
762 | long bits; | |
763 | ||
764 | if (!scm_is_string (modes)) | |
765 | scm_wrong_type_arg_msg (NULL, 0, modes, "string"); | |
766 | ||
3a5fb14d MV |
767 | bits = scm_i_mode_bits_n (scm_i_string_chars (modes), |
768 | scm_i_string_length (modes)); | |
d617ee18 MV |
769 | scm_remember_upto_here_1 (modes); |
770 | return bits; | |
771 | } | |
eadd48de GH |
772 | |
773 | /* Return the mode flags from an open port. | |
774 | * Some modes such as "append" are only used when opening | |
775 | * a file and are not returned here. */ | |
776 | ||
3b3b36dd | 777 | SCM_DEFINE (scm_port_mode, "port-mode", 1, 0, 0, |
1bbd0b84 | 778 | (SCM port), |
1e6808ea MG |
779 | "Return the port modes associated with the open port @var{port}.\n" |
780 | "These will not necessarily be identical to the modes used when\n" | |
781 | "the port was opened, since modes such as \"append\" which are\n" | |
782 | "used only during port creation are not retained.") | |
1bbd0b84 | 783 | #define FUNC_NAME s_scm_port_mode |
eadd48de | 784 | { |
26a3038d | 785 | char modes[4]; |
eadd48de | 786 | modes[0] = '\0'; |
78446828 MV |
787 | |
788 | port = SCM_COERCE_OUTPORT (port); | |
34d19ef6 | 789 | SCM_VALIDATE_OPPORT (1, port); |
f9a64404 DH |
790 | if (SCM_CELL_WORD_0 (port) & SCM_RDNG) { |
791 | if (SCM_CELL_WORD_0 (port) & SCM_WRTNG) | |
eadd48de GH |
792 | strcpy (modes, "r+"); |
793 | else | |
794 | strcpy (modes, "r"); | |
795 | } | |
f9a64404 | 796 | else if (SCM_CELL_WORD_0 (port) & SCM_WRTNG) |
eadd48de | 797 | strcpy (modes, "w"); |
f9a64404 | 798 | if (SCM_CELL_WORD_0 (port) & SCM_BUF0) |
eadd48de | 799 | strcat (modes, "0"); |
3a5fb14d | 800 | return scm_from_locale_string (modes); |
eadd48de | 801 | } |
1bbd0b84 | 802 | #undef FUNC_NAME |
eadd48de GH |
803 | |
804 | ||
d68fee48 JB |
805 | \f |
806 | /* Closing ports. */ | |
807 | ||
0f2d19dd JB |
808 | /* scm_close_port |
809 | * Call the close operation on a port object. | |
eadd48de | 810 | * see also scm_close. |
0f2d19dd | 811 | */ |
3b3b36dd | 812 | SCM_DEFINE (scm_close_port, "close-port", 1, 0, 0, |
1bbd0b84 | 813 | (SCM port), |
1e6808ea MG |
814 | "Close the specified port object. Return @code{#t} if it\n" |
815 | "successfully closes a port or @code{#f} if it was already\n" | |
816 | "closed. An exception may be raised if an error occurs, for\n" | |
817 | "example when flushing buffered output. See also @ref{Ports and\n" | |
818 | "File Descriptors, close}, for a procedure which can close file\n" | |
819 | "descriptors.") | |
1bbd0b84 | 820 | #define FUNC_NAME s_scm_close_port |
0f2d19dd | 821 | { |
1be6b49c | 822 | size_t i; |
eadd48de GH |
823 | int rv; |
824 | ||
78446828 MV |
825 | port = SCM_COERCE_OUTPORT (port); |
826 | ||
7a754ca6 | 827 | SCM_VALIDATE_PORT (1, port); |
0f2d19dd | 828 | if (SCM_CLOSEDP (port)) |
eadd48de | 829 | return SCM_BOOL_F; |
0f2d19dd | 830 | i = SCM_PTOBNUM (port); |
affc96b5 GH |
831 | if (scm_ptobs[i].close) |
832 | rv = (scm_ptobs[i].close) (port); | |
eadd48de GH |
833 | else |
834 | rv = 0; | |
9de87eea | 835 | scm_i_scm_pthread_mutex_lock (&scm_i_port_table_mutex); |
0f2d19dd | 836 | scm_remove_from_port_table (port); |
9de87eea | 837 | scm_i_pthread_mutex_unlock (&scm_i_port_table_mutex); |
22a52da1 | 838 | SCM_CLR_PORT_OPEN_FLAG (port); |
7888309b | 839 | return scm_from_bool (rv >= 0); |
7a754ca6 MD |
840 | } |
841 | #undef FUNC_NAME | |
842 | ||
843 | SCM_DEFINE (scm_close_input_port, "close-input-port", 1, 0, 0, | |
844 | (SCM port), | |
845 | "Close the specified input port object. The routine has no effect if\n" | |
846 | "the file has already been closed. An exception may be raised if an\n" | |
847 | "error occurs. The value returned is unspecified.\n\n" | |
848 | "See also @ref{Ports and File Descriptors, close}, for a procedure\n" | |
849 | "which can close file descriptors.") | |
850 | #define FUNC_NAME s_scm_close_input_port | |
851 | { | |
852 | SCM_VALIDATE_INPUT_PORT (1, port); | |
853 | scm_close_port (port); | |
854 | return SCM_UNSPECIFIED; | |
855 | } | |
856 | #undef FUNC_NAME | |
857 | ||
858 | SCM_DEFINE (scm_close_output_port, "close-output-port", 1, 0, 0, | |
859 | (SCM port), | |
860 | "Close the specified output port object. The routine has no effect if\n" | |
861 | "the file has already been closed. An exception may be raised if an\n" | |
862 | "error occurs. The value returned is unspecified.\n\n" | |
863 | "See also @ref{Ports and File Descriptors, close}, for a procedure\n" | |
864 | "which can close file descriptors.") | |
865 | #define FUNC_NAME s_scm_close_output_port | |
866 | { | |
867 | port = SCM_COERCE_OUTPORT (port); | |
868 | SCM_VALIDATE_OUTPUT_PORT (1, port); | |
869 | scm_close_port (port); | |
870 | return SCM_UNSPECIFIED; | |
0f2d19dd | 871 | } |
1bbd0b84 | 872 | #undef FUNC_NAME |
0f2d19dd | 873 | |
c536b4b3 MV |
874 | void |
875 | scm_c_port_for_each (void (*proc)(void *data, SCM p), void *data) | |
c2ca4493 | 876 | { |
c014a02e | 877 | long i; |
3a5fb14d | 878 | size_t n; |
fdfe6305 MV |
879 | SCM ports; |
880 | ||
fdfe6305 MV |
881 | /* Even without pre-emptive multithreading, running arbitrary code |
882 | while scanning the port table is unsafe because the port table | |
3a5fb14d MV |
883 | can change arbitrarily (from a GC, for example). So we first |
884 | collect the ports into a vector. -mvo */ | |
fdfe6305 | 885 | |
9de87eea | 886 | scm_i_scm_pthread_mutex_lock (&scm_i_port_table_mutex); |
3a5fb14d | 887 | n = scm_i_port_table_size; |
9de87eea | 888 | scm_i_pthread_mutex_unlock (&scm_i_port_table_mutex); |
fdfe6305 | 889 | |
4057a3e0 | 890 | ports = scm_c_make_vector (n, SCM_BOOL_F); |
3a5fb14d | 891 | |
9de87eea | 892 | scm_i_scm_pthread_mutex_lock (&scm_i_port_table_mutex); |
3a5fb14d MV |
893 | if (n > scm_i_port_table_size) |
894 | n = scm_i_port_table_size; | |
895 | for (i = 0; i < n; i++) | |
4057a3e0 | 896 | SCM_SIMPLE_VECTOR_SET (ports, i, scm_i_port_table[i]->port); |
9de87eea | 897 | scm_i_pthread_mutex_unlock (&scm_i_port_table_mutex); |
3a5fb14d MV |
898 | |
899 | for (i = 0; i < n; i++) | |
4057a3e0 | 900 | proc (data, SCM_SIMPLE_VECTOR_REF (ports, i)); |
bd83658e RB |
901 | |
902 | scm_remember_upto_here_1 (ports); | |
c536b4b3 | 903 | } |
fdfe6305 | 904 | |
c536b4b3 MV |
905 | SCM_DEFINE (scm_port_for_each, "port-for-each", 1, 0, 0, |
906 | (SCM proc), | |
907 | "Apply @var{proc} to each port in the Guile port table\n" | |
908 | "in turn. The return value is unspecified. More specifically,\n" | |
909 | "@var{proc} is applied exactly once to every port that exists\n" | |
910 | "in the system at the time @var{port-for-each} is invoked.\n" | |
911 | "Changes to the port table while @var{port-for-each} is running\n" | |
912 | "have no effect as far as @var{port-for-each} is concerned.") | |
913 | #define FUNC_NAME s_scm_port_for_each | |
914 | { | |
915 | SCM_VALIDATE_PROC (1, proc); | |
916 | ||
917 | scm_c_port_for_each ((void (*)(void*,SCM))scm_call_1, proc); | |
c2ca4493 GH |
918 | return SCM_UNSPECIFIED; |
919 | } | |
920 | #undef FUNC_NAME | |
921 | ||
c536b4b3 | 922 | |
d68fee48 JB |
923 | \f |
924 | /* Utter miscellany. Gosh, we should clean this up some time. */ | |
925 | ||
3b3b36dd | 926 | SCM_DEFINE (scm_input_port_p, "input-port?", 1, 0, 0, |
1bbd0b84 | 927 | (SCM x), |
1e6808ea MG |
928 | "Return @code{#t} if @var{x} is an input port, otherwise return\n" |
929 | "@code{#f}. Any object satisfying this predicate also satisfies\n" | |
930 | "@code{port?}.") | |
1bbd0b84 | 931 | #define FUNC_NAME s_scm_input_port_p |
0f2d19dd | 932 | { |
7888309b | 933 | return scm_from_bool (SCM_INPUT_PORT_P (x)); |
0f2d19dd | 934 | } |
1bbd0b84 | 935 | #undef FUNC_NAME |
0f2d19dd | 936 | |
3b3b36dd | 937 | SCM_DEFINE (scm_output_port_p, "output-port?", 1, 0, 0, |
1bbd0b84 | 938 | (SCM x), |
1e6808ea MG |
939 | "Return @code{#t} if @var{x} is an output port, otherwise return\n" |
940 | "@code{#f}. Any object satisfying this predicate also satisfies\n" | |
941 | "@code{port?}.") | |
1bbd0b84 | 942 | #define FUNC_NAME s_scm_output_port_p |
0f2d19dd | 943 | { |
82893676 | 944 | x = SCM_COERCE_OUTPORT (x); |
7888309b | 945 | return scm_from_bool (SCM_OUTPUT_PORT_P (x)); |
0f2d19dd | 946 | } |
1bbd0b84 | 947 | #undef FUNC_NAME |
0f2d19dd | 948 | |
eb5c0a2a GH |
949 | SCM_DEFINE (scm_port_p, "port?", 1, 0, 0, |
950 | (SCM x), | |
1e6808ea | 951 | "Return a boolean indicating whether @var{x} is a port.\n" |
5352393c MG |
952 | "Equivalent to @code{(or (input-port? @var{x}) (output-port?\n" |
953 | "@var{x}))}.") | |
eb5c0a2a GH |
954 | #define FUNC_NAME s_scm_port_p |
955 | { | |
7888309b | 956 | return scm_from_bool (SCM_PORTP (x)); |
eb5c0a2a GH |
957 | } |
958 | #undef FUNC_NAME | |
959 | ||
3b3b36dd | 960 | SCM_DEFINE (scm_port_closed_p, "port-closed?", 1, 0, 0, |
1bbd0b84 | 961 | (SCM port), |
1e6808ea MG |
962 | "Return @code{#t} if @var{port} is closed or @code{#f} if it is\n" |
963 | "open.") | |
1bbd0b84 | 964 | #define FUNC_NAME s_scm_port_closed_p |
60d0643d | 965 | { |
34d19ef6 | 966 | SCM_VALIDATE_PORT (1, port); |
7888309b | 967 | return scm_from_bool (!SCM_OPPORTP (port)); |
60d0643d | 968 | } |
1bbd0b84 | 969 | #undef FUNC_NAME |
0f2d19dd | 970 | |
3b3b36dd | 971 | SCM_DEFINE (scm_eof_object_p, "eof-object?", 1, 0, 0, |
1bbd0b84 | 972 | (SCM x), |
1e6808ea MG |
973 | "Return @code{#t} if @var{x} is an end-of-file object; otherwise\n" |
974 | "return @code{#f}.") | |
1bbd0b84 | 975 | #define FUNC_NAME s_scm_eof_object_p |
0f2d19dd | 976 | { |
7888309b | 977 | return scm_from_bool(SCM_EOF_OBJECT_P (x)); |
0f2d19dd | 978 | } |
1bbd0b84 | 979 | #undef FUNC_NAME |
0f2d19dd | 980 | |
3b3b36dd | 981 | SCM_DEFINE (scm_force_output, "force-output", 0, 1, 0, |
1bbd0b84 | 982 | (SCM port), |
b380b885 | 983 | "Flush the specified output port, or the current output port if @var{port}\n" |
9401323e | 984 | "is omitted. The current output buffer contents are passed to the\n" |
b380b885 MD |
985 | "underlying port implementation (e.g., in the case of fports, the\n" |
986 | "data will be written to the file and the output buffer will be cleared.)\n" | |
987 | "It has no effect on an unbuffered port.\n\n" | |
988 | "The return value is unspecified.") | |
1bbd0b84 | 989 | #define FUNC_NAME s_scm_force_output |
0f2d19dd JB |
990 | { |
991 | if (SCM_UNBNDP (port)) | |
9de87eea | 992 | port = scm_current_output_port (); |
0f2d19dd | 993 | else |
78446828 MV |
994 | { |
995 | port = SCM_COERCE_OUTPORT (port); | |
34d19ef6 | 996 | SCM_VALIDATE_OPOUTPORT (1, port); |
78446828 | 997 | } |
affc96b5 | 998 | scm_flush (port); |
ee149d03 | 999 | return SCM_UNSPECIFIED; |
0f2d19dd | 1000 | } |
1bbd0b84 | 1001 | #undef FUNC_NAME |
0f2d19dd | 1002 | |
a1ec6916 | 1003 | SCM_DEFINE (scm_flush_all_ports, "flush-all-ports", 0, 0, 0, |
1bbd0b84 | 1004 | (), |
b380b885 MD |
1005 | "Equivalent to calling @code{force-output} on\n" |
1006 | "all open output ports. The return value is unspecified.") | |
1bbd0b84 | 1007 | #define FUNC_NAME s_scm_flush_all_ports |
89ea5b7c | 1008 | { |
1be6b49c | 1009 | size_t i; |
89ea5b7c | 1010 | |
9de87eea | 1011 | scm_i_scm_pthread_mutex_lock (&scm_i_port_table_mutex); |
67329a9e | 1012 | for (i = 0; i < scm_i_port_table_size; i++) |
89ea5b7c | 1013 | { |
67329a9e HWN |
1014 | if (SCM_OPOUTPORTP (scm_i_port_table[i]->port)) |
1015 | scm_flush (scm_i_port_table[i]->port); | |
89ea5b7c | 1016 | } |
9de87eea | 1017 | scm_i_pthread_mutex_unlock (&scm_i_port_table_mutex); |
89ea5b7c GH |
1018 | return SCM_UNSPECIFIED; |
1019 | } | |
1bbd0b84 | 1020 | #undef FUNC_NAME |
0f2d19dd | 1021 | |
3b3b36dd | 1022 | SCM_DEFINE (scm_read_char, "read-char", 0, 1, 0, |
1bbd0b84 | 1023 | (SCM port), |
1e6808ea MG |
1024 | "Return the next character available from @var{port}, updating\n" |
1025 | "@var{port} to point to the following character. If no more\n" | |
1026 | "characters are available, the end-of-file object is returned.") | |
1bbd0b84 | 1027 | #define FUNC_NAME s_scm_read_char |
0f2d19dd JB |
1028 | { |
1029 | int c; | |
1030 | if (SCM_UNBNDP (port)) | |
9de87eea | 1031 | port = scm_current_input_port (); |
34d19ef6 | 1032 | SCM_VALIDATE_OPINPORT (1, port); |
b7f3516f | 1033 | c = scm_getc (port); |
0f2d19dd JB |
1034 | if (EOF == c) |
1035 | return SCM_EOF_VAL; | |
7866a09b | 1036 | return SCM_MAKE_CHAR (c); |
0f2d19dd | 1037 | } |
1bbd0b84 | 1038 | #undef FUNC_NAME |
0f2d19dd | 1039 | |
5c070ca7 | 1040 | /* this should only be called when the read buffer is empty. it |
affc96b5 | 1041 | tries to refill the read buffer. it returns the first char from |
5c070ca7 | 1042 | the port, which is either EOF or *(pt->read_pos). */ |
6c951427 | 1043 | int |
affc96b5 | 1044 | scm_fill_input (SCM port) |
6c951427 | 1045 | { |
92c2555f | 1046 | scm_t_port *pt = SCM_PTAB_ENTRY (port); |
283a1a0e | 1047 | |
6c951427 GH |
1048 | if (pt->read_buf == pt->putback_buf) |
1049 | { | |
1050 | /* finished reading put-back chars. */ | |
1051 | pt->read_buf = pt->saved_read_buf; | |
1052 | pt->read_pos = pt->saved_read_pos; | |
1053 | pt->read_end = pt->saved_read_end; | |
1054 | pt->read_buf_size = pt->saved_read_buf_size; | |
1055 | if (pt->read_pos < pt->read_end) | |
5c070ca7 | 1056 | return *(pt->read_pos); |
6c951427 | 1057 | } |
affc96b5 | 1058 | return scm_ptobs[SCM_PTOBNUM (port)].fill_input (port); |
6c951427 GH |
1059 | } |
1060 | ||
ee149d03 | 1061 | int |
a284e297 | 1062 | scm_getc (SCM port) |
0f2d19dd JB |
1063 | { |
1064 | int c; | |
92c2555f | 1065 | scm_t_port *pt = SCM_PTAB_ENTRY (port); |
ee149d03 | 1066 | |
840ae05d | 1067 | if (pt->rw_active == SCM_PORT_WRITE) |
aab1caad RB |
1068 | /* may be marginally faster than calling scm_flush. */ |
1069 | scm_ptobs[SCM_PTOBNUM (port)].flush (port); | |
6c951427 | 1070 | |
5c070ca7 GH |
1071 | if (pt->rw_random) |
1072 | pt->rw_active = SCM_PORT_READ; | |
1073 | ||
1074 | if (pt->read_pos >= pt->read_end) | |
ee149d03 | 1075 | { |
affc96b5 | 1076 | if (scm_fill_input (port) == EOF) |
5c070ca7 | 1077 | return EOF; |
ee149d03 JB |
1078 | } |
1079 | ||
5c070ca7 | 1080 | c = *(pt->read_pos++); |
840ae05d | 1081 | |
aab1caad | 1082 | switch (c) |
ee149d03 | 1083 | { |
a727f4f6 KR |
1084 | case '\a': |
1085 | break; | |
1086 | case '\b': | |
1087 | SCM_DECCOL (port); | |
1088 | break; | |
aab1caad RB |
1089 | case '\n': |
1090 | SCM_INCLINE (port); | |
1091 | break; | |
a727f4f6 KR |
1092 | case '\r': |
1093 | SCM_ZEROCOL (port); | |
1094 | break; | |
aab1caad RB |
1095 | case '\t': |
1096 | SCM_TABCOL (port); | |
1097 | break; | |
1098 | default: | |
1099 | SCM_INCCOL (port); | |
1100 | break; | |
ee149d03 | 1101 | } |
aab1caad | 1102 | |
ee149d03 | 1103 | return c; |
0f2d19dd JB |
1104 | } |
1105 | ||
ee149d03 | 1106 | void |
a284e297 | 1107 | scm_putc (char c, SCM port) |
ee149d03 | 1108 | { |
417b0dc1 | 1109 | SCM_ASSERT_TYPE (SCM_OPOUTPORTP (port), port, 0, NULL, "output port"); |
265e6a4d | 1110 | scm_lfwrite (&c, 1, port); |
ee149d03 | 1111 | } |
3cb988bd | 1112 | |
ee149d03 | 1113 | void |
70d63753 | 1114 | scm_puts (const char *s, SCM port) |
3cb988bd | 1115 | { |
417b0dc1 | 1116 | SCM_ASSERT_TYPE (SCM_OPOUTPORTP (port), port, 0, NULL, "output port"); |
265e6a4d | 1117 | scm_lfwrite (s, strlen (s), port); |
ee149d03 | 1118 | } |
3cb988bd | 1119 | |
6fe692e9 MD |
1120 | /* scm_lfwrite |
1121 | * | |
53802ea8 MV |
1122 | * This function differs from scm_c_write; it updates port line and |
1123 | * column. */ | |
6fe692e9 | 1124 | |
ee149d03 | 1125 | void |
1be6b49c | 1126 | scm_lfwrite (const char *ptr, size_t size, SCM port) |
ee149d03 | 1127 | { |
92c2555f MV |
1128 | scm_t_port *pt = SCM_PTAB_ENTRY (port); |
1129 | scm_t_ptob_descriptor *ptob = &scm_ptobs[SCM_PTOBNUM (port)]; | |
3e2043c4 | 1130 | |
840ae05d | 1131 | if (pt->rw_active == SCM_PORT_READ) |
affc96b5 | 1132 | scm_end_input (port); |
283a1a0e | 1133 | |
31703ab8 | 1134 | ptob->write (port, ptr, size); |
840ae05d | 1135 | |
53802ea8 | 1136 | for (; size; ptr++, size--) { |
a727f4f6 KR |
1137 | if (*ptr == '\a') { |
1138 | } | |
1139 | else if (*ptr == '\b') { | |
1140 | SCM_DECCOL(port); | |
1141 | } | |
1142 | else if (*ptr == '\n') { | |
53802ea8 MV |
1143 | SCM_INCLINE(port); |
1144 | } | |
a727f4f6 KR |
1145 | else if (*ptr == '\r') { |
1146 | SCM_ZEROCOL(port); | |
1147 | } | |
53802ea8 MV |
1148 | else if (*ptr == '\t') { |
1149 | SCM_TABCOL(port); | |
1150 | } | |
1151 | else { | |
1152 | SCM_INCCOL(port); | |
1153 | } | |
1154 | } | |
1155 | ||
840ae05d JB |
1156 | if (pt->rw_random) |
1157 | pt->rw_active = SCM_PORT_WRITE; | |
ee149d03 | 1158 | } |
3cb988bd | 1159 | |
6fe692e9 MD |
1160 | /* scm_c_read |
1161 | * | |
1162 | * Used by an application to read arbitrary number of bytes from an | |
1163 | * SCM port. Same semantics as libc read, except that scm_c_read only | |
1164 | * returns less than SIZE bytes if at end-of-file. | |
1165 | * | |
1166 | * Warning: Doesn't update port line and column counts! */ | |
1167 | ||
1be6b49c ML |
1168 | size_t |
1169 | scm_c_read (SCM port, void *buffer, size_t size) | |
6fe692e9 | 1170 | { |
92c2555f | 1171 | scm_t_port *pt = SCM_PTAB_ENTRY (port); |
1be6b49c | 1172 | size_t n_read = 0, n_available; |
6fe692e9 MD |
1173 | |
1174 | if (pt->rw_active == SCM_PORT_WRITE) | |
1175 | scm_ptobs[SCM_PTOBNUM (port)].flush (port); | |
1176 | ||
1177 | if (pt->rw_random) | |
1178 | pt->rw_active = SCM_PORT_READ; | |
1179 | ||
1180 | if (SCM_READ_BUFFER_EMPTY_P (pt)) | |
1181 | { | |
1182 | if (scm_fill_input (port) == EOF) | |
1183 | return 0; | |
1184 | } | |
1185 | ||
1186 | n_available = pt->read_end - pt->read_pos; | |
1187 | ||
1188 | while (n_available < size) | |
1189 | { | |
1190 | memcpy (buffer, pt->read_pos, n_available); | |
910d1e40 | 1191 | buffer = (char *) buffer + n_available; |
6fe692e9 MD |
1192 | pt->read_pos += n_available; |
1193 | n_read += n_available; | |
1194 | ||
1195 | if (SCM_READ_BUFFER_EMPTY_P (pt)) | |
1196 | { | |
1197 | if (scm_fill_input (port) == EOF) | |
1198 | return n_read; | |
1199 | } | |
1200 | ||
1201 | size -= n_available; | |
1202 | n_available = pt->read_end - pt->read_pos; | |
1203 | } | |
1204 | ||
1205 | memcpy (buffer, pt->read_pos, size); | |
1206 | pt->read_pos += size; | |
1207 | ||
1208 | return n_read + size; | |
1209 | } | |
1210 | ||
1211 | /* scm_c_write | |
1212 | * | |
1213 | * Used by an application to write arbitrary number of bytes to an SCM | |
1214 | * port. Similar semantics as libc write. However, unlike libc | |
1215 | * write, scm_c_write writes the requested number of bytes and has no | |
1216 | * return value. | |
1217 | * | |
1218 | * Warning: Doesn't update port line and column counts! | |
1219 | */ | |
1220 | ||
1221 | void | |
1be6b49c | 1222 | scm_c_write (SCM port, const void *ptr, size_t size) |
6fe692e9 | 1223 | { |
92c2555f MV |
1224 | scm_t_port *pt = SCM_PTAB_ENTRY (port); |
1225 | scm_t_ptob_descriptor *ptob = &scm_ptobs[SCM_PTOBNUM (port)]; | |
6fe692e9 MD |
1226 | |
1227 | if (pt->rw_active == SCM_PORT_READ) | |
1228 | scm_end_input (port); | |
1229 | ||
1230 | ptob->write (port, ptr, size); | |
1231 | ||
1232 | if (pt->rw_random) | |
1233 | pt->rw_active = SCM_PORT_WRITE; | |
1234 | } | |
3cb988bd | 1235 | |
fca43887 | 1236 | void |
a284e297 | 1237 | scm_flush (SCM port) |
ee149d03 | 1238 | { |
c014a02e | 1239 | long i = SCM_PTOBNUM (port); |
fca43887 | 1240 | assert ((i >= 0) && (i < scm_i_port_table_size)); |
affc96b5 | 1241 | (scm_ptobs[i].flush) (port); |
ee149d03 JB |
1242 | } |
1243 | ||
283a1a0e | 1244 | void |
a284e297 | 1245 | scm_end_input (SCM port) |
283a1a0e | 1246 | { |
c014a02e | 1247 | long offset; |
92c2555f | 1248 | scm_t_port *pt = SCM_PTAB_ENTRY (port); |
283a1a0e GH |
1249 | |
1250 | if (pt->read_buf == pt->putback_buf) | |
1251 | { | |
1252 | offset = pt->read_end - pt->read_pos; | |
1253 | pt->read_buf = pt->saved_read_buf; | |
1254 | pt->read_pos = pt->saved_read_pos; | |
1255 | pt->read_end = pt->saved_read_end; | |
1256 | pt->read_buf_size = pt->saved_read_buf_size; | |
1257 | } | |
1258 | else | |
1259 | offset = 0; | |
1260 | ||
affc96b5 | 1261 | scm_ptobs[SCM_PTOBNUM (port)].end_input (port, offset); |
283a1a0e GH |
1262 | } |
1263 | ||
ee149d03 JB |
1264 | \f |
1265 | ||
1266 | ||
1267 | void | |
a284e297 | 1268 | scm_ungetc (int c, SCM port) |
c6c79933 | 1269 | #define FUNC_NAME "scm_ungetc" |
ee149d03 | 1270 | { |
92c2555f | 1271 | scm_t_port *pt = SCM_PTAB_ENTRY (port); |
840ae05d | 1272 | |
6c951427 GH |
1273 | if (pt->read_buf == pt->putback_buf) |
1274 | /* already using the put-back buffer. */ | |
1275 | { | |
1276 | /* enlarge putback_buf if necessary. */ | |
1277 | if (pt->read_end == pt->read_buf + pt->read_buf_size | |
1278 | && pt->read_buf == pt->read_pos) | |
1279 | { | |
1be6b49c | 1280 | size_t new_size = pt->read_buf_size * 2; |
c6c79933 | 1281 | unsigned char *tmp = (unsigned char *) |
92d8fd32 LC |
1282 | /* XXX: Can we use `GC_REALLOC' with `GC_MALLOC_ATOMIC'-allocated |
1283 | data? (Ludo) */ | |
4c9419ac MV |
1284 | scm_gc_realloc (pt->putback_buf, pt->read_buf_size, new_size, |
1285 | "putback buffer"); | |
6c951427 | 1286 | |
6c951427 GH |
1287 | pt->read_pos = pt->read_buf = pt->putback_buf = tmp; |
1288 | pt->read_end = pt->read_buf + pt->read_buf_size; | |
1289 | pt->read_buf_size = pt->putback_buf_size = new_size; | |
1290 | } | |
1291 | ||
1292 | /* shift any existing bytes to buffer + 1. */ | |
1293 | if (pt->read_pos == pt->read_end) | |
1294 | pt->read_end = pt->read_buf + 1; | |
1295 | else if (pt->read_pos != pt->read_buf + 1) | |
1296 | { | |
1297 | int count = pt->read_end - pt->read_pos; | |
1298 | ||
1299 | memmove (pt->read_buf + 1, pt->read_pos, count); | |
1300 | pt->read_end = pt->read_buf + 1 + count; | |
1301 | } | |
1302 | ||
1303 | pt->read_pos = pt->read_buf; | |
1304 | } | |
1305 | else | |
1306 | /* switch to the put-back buffer. */ | |
1307 | { | |
1308 | if (pt->putback_buf == NULL) | |
1309 | { | |
c357d546 | 1310 | pt->putback_buf |
92d8fd32 LC |
1311 | = (unsigned char *) scm_gc_malloc_pointerless |
1312 | (SCM_INITIAL_PUTBACK_BUF_SIZE, "putback buffer"); | |
6c951427 GH |
1313 | pt->putback_buf_size = SCM_INITIAL_PUTBACK_BUF_SIZE; |
1314 | } | |
1315 | ||
1316 | pt->saved_read_buf = pt->read_buf; | |
1317 | pt->saved_read_pos = pt->read_pos; | |
1318 | pt->saved_read_end = pt->read_end; | |
1319 | pt->saved_read_buf_size = pt->read_buf_size; | |
1320 | ||
1321 | pt->read_pos = pt->read_buf = pt->putback_buf; | |
1322 | pt->read_end = pt->read_buf + 1; | |
1323 | pt->read_buf_size = pt->putback_buf_size; | |
1324 | } | |
1325 | ||
1326 | *pt->read_buf = c; | |
ee149d03 | 1327 | |
840ae05d JB |
1328 | if (pt->rw_random) |
1329 | pt->rw_active = SCM_PORT_READ; | |
1330 | ||
ee149d03 JB |
1331 | if (c == '\n') |
1332 | { | |
1333 | /* What should col be in this case? | |
1334 | * We'll leave it at -1. | |
1335 | */ | |
1336 | SCM_LINUM (port) -= 1; | |
1337 | } | |
1338 | else | |
1339 | SCM_COL(port) -= 1; | |
1340 | } | |
c6c79933 | 1341 | #undef FUNC_NAME |
ee149d03 JB |
1342 | |
1343 | ||
1344 | void | |
70d63753 | 1345 | scm_ungets (const char *s, int n, SCM port) |
ee149d03 JB |
1346 | { |
1347 | /* This is simple minded and inefficient, but unreading strings is | |
1348 | * probably not a common operation, and remember that line and | |
1349 | * column numbers have to be handled... | |
1350 | * | |
1351 | * Please feel free to write an optimized version! | |
1352 | */ | |
1353 | while (n--) | |
1354 | scm_ungetc (s[n], port); | |
1355 | } | |
1356 | ||
1357 | ||
3b3b36dd | 1358 | SCM_DEFINE (scm_peek_char, "peek-char", 0, 1, 0, |
1bbd0b84 | 1359 | (SCM port), |
1e6808ea MG |
1360 | "Return the next character available from @var{port},\n" |
1361 | "@emph{without} updating @var{port} to point to the following\n" | |
1362 | "character. If no more characters are available, the\n" | |
c2dfff19 KR |
1363 | "end-of-file object is returned.\n" |
1364 | "\n" | |
1365 | "The value returned by\n" | |
1e6808ea MG |
1366 | "a call to @code{peek-char} is the same as the value that would\n" |
1367 | "have been returned by a call to @code{read-char} on the same\n" | |
1368 | "port. The only difference is that the very next call to\n" | |
1369 | "@code{read-char} or @code{peek-char} on that @var{port} will\n" | |
1370 | "return the value returned by the preceding call to\n" | |
1371 | "@code{peek-char}. In particular, a call to @code{peek-char} on\n" | |
1372 | "an interactive port will hang waiting for input whenever a call\n" | |
c2dfff19 | 1373 | "to @code{read-char} would have hung.") |
1bbd0b84 | 1374 | #define FUNC_NAME s_scm_peek_char |
ee149d03 | 1375 | { |
1a973c42 | 1376 | int c, column; |
ee149d03 | 1377 | if (SCM_UNBNDP (port)) |
9de87eea | 1378 | port = scm_current_input_port (); |
ee149d03 | 1379 | else |
34d19ef6 | 1380 | SCM_VALIDATE_OPINPORT (1, port); |
1a973c42 | 1381 | column = SCM_COL(port); |
ee149d03 JB |
1382 | c = scm_getc (port); |
1383 | if (EOF == c) | |
1384 | return SCM_EOF_VAL; | |
1385 | scm_ungetc (c, port); | |
1a973c42 | 1386 | SCM_COL(port) = column; |
7866a09b | 1387 | return SCM_MAKE_CHAR (c); |
3cb988bd | 1388 | } |
1bbd0b84 | 1389 | #undef FUNC_NAME |
3cb988bd | 1390 | |
1be4270a | 1391 | SCM_DEFINE (scm_unread_char, "unread-char", 1, 1, 0, |
1bbd0b84 | 1392 | (SCM cobj, SCM port), |
b380b885 MD |
1393 | "Place @var{char} in @var{port} so that it will be read by the\n" |
1394 | "next read operation. If called multiple times, the unread characters\n" | |
1395 | "will be read again in last-in first-out order. If @var{port} is\n" | |
1396 | "not supplied, the current input port is used.") | |
1bbd0b84 | 1397 | #define FUNC_NAME s_scm_unread_char |
0f2d19dd JB |
1398 | { |
1399 | int c; | |
1400 | ||
34d19ef6 | 1401 | SCM_VALIDATE_CHAR (1, cobj); |
0f2d19dd | 1402 | if (SCM_UNBNDP (port)) |
9de87eea | 1403 | port = scm_current_input_port (); |
0f2d19dd | 1404 | else |
34d19ef6 | 1405 | SCM_VALIDATE_OPINPORT (2, port); |
0f2d19dd | 1406 | |
7866a09b | 1407 | c = SCM_CHAR (cobj); |
0f2d19dd | 1408 | |
b7f3516f | 1409 | scm_ungetc (c, port); |
0f2d19dd JB |
1410 | return cobj; |
1411 | } | |
1bbd0b84 | 1412 | #undef FUNC_NAME |
0f2d19dd | 1413 | |
a1ec6916 | 1414 | SCM_DEFINE (scm_unread_string, "unread-string", 2, 0, 0, |
1bbd0b84 | 1415 | (SCM str, SCM port), |
b380b885 MD |
1416 | "Place the string @var{str} in @var{port} so that its characters will be\n" |
1417 | "read in subsequent read operations. If called multiple times, the\n" | |
1418 | "unread characters will be read again in last-in first-out order. If\n" | |
1419 | "@var{port} is not supplied, the current-input-port is used.") | |
1bbd0b84 | 1420 | #define FUNC_NAME s_scm_unread_string |
ee1e7e13 | 1421 | { |
34d19ef6 | 1422 | SCM_VALIDATE_STRING (1, str); |
ee1e7e13 | 1423 | if (SCM_UNBNDP (port)) |
9de87eea | 1424 | port = scm_current_input_port (); |
ee1e7e13 | 1425 | else |
34d19ef6 | 1426 | SCM_VALIDATE_OPINPORT (2, port); |
ee1e7e13 | 1427 | |
3a5fb14d | 1428 | scm_ungets (scm_i_string_chars (str), scm_i_string_length (str), port); |
ee1e7e13 MD |
1429 | |
1430 | return str; | |
1431 | } | |
1bbd0b84 | 1432 | #undef FUNC_NAME |
ee1e7e13 | 1433 | |
a1ec6916 | 1434 | SCM_DEFINE (scm_seek, "seek", 3, 0, 0, |
1e6808ea MG |
1435 | (SCM fd_port, SCM offset, SCM whence), |
1436 | "Sets the current position of @var{fd/port} to the integer\n" | |
1437 | "@var{offset}, which is interpreted according to the value of\n" | |
1438 | "@var{whence}.\n" | |
1439 | "\n" | |
1440 | "One of the following variables should be supplied for\n" | |
1441 | "@var{whence}:\n" | |
b380b885 MD |
1442 | "@defvar SEEK_SET\n" |
1443 | "Seek from the beginning of the file.\n" | |
1444 | "@end defvar\n" | |
1445 | "@defvar SEEK_CUR\n" | |
1446 | "Seek from the current position.\n" | |
1447 | "@end defvar\n" | |
1448 | "@defvar SEEK_END\n" | |
1449 | "Seek from the end of the file.\n" | |
1e6808ea MG |
1450 | "@end defvar\n" |
1451 | "If @var{fd/port} is a file descriptor, the underlying system\n" | |
1452 | "call is @code{lseek}. @var{port} may be a string port.\n" | |
1453 | "\n" | |
1454 | "The value returned is the new position in the file. This means\n" | |
1455 | "that the current position of a port can be obtained using:\n" | |
1456 | "@lisp\n" | |
b380b885 | 1457 | "(seek port 0 SEEK_CUR)\n" |
1e6808ea | 1458 | "@end lisp") |
1bbd0b84 | 1459 | #define FUNC_NAME s_scm_seek |
840ae05d | 1460 | { |
840ae05d JB |
1461 | int how; |
1462 | ||
1e6808ea | 1463 | fd_port = SCM_COERCE_OUTPORT (fd_port); |
840ae05d | 1464 | |
a55c2b68 | 1465 | how = scm_to_int (whence); |
840ae05d | 1466 | if (how != SEEK_SET && how != SEEK_CUR && how != SEEK_END) |
1bbd0b84 | 1467 | SCM_OUT_OF_RANGE (3, whence); |
23f2b9a3 | 1468 | |
8ab3d8a0 KR |
1469 | if (SCM_OPFPORTP (fd_port)) |
1470 | { | |
1471 | /* go direct to fport code to allow 64-bit offsets */ | |
1472 | return scm_i_fport_seek (fd_port, offset, how); | |
1473 | } | |
1474 | else if (SCM_OPPORTP (fd_port)) | |
840ae05d | 1475 | { |
92c2555f | 1476 | scm_t_ptob_descriptor *ptob = scm_ptobs + SCM_PTOBNUM (fd_port); |
23f2b9a3 KR |
1477 | off_t off = scm_to_off_t (offset); |
1478 | off_t rv; | |
840ae05d JB |
1479 | |
1480 | if (!ptob->seek) | |
1bbd0b84 | 1481 | SCM_MISC_ERROR ("port is not seekable", |
1e6808ea | 1482 | scm_cons (fd_port, SCM_EOL)); |
840ae05d | 1483 | else |
1e6808ea | 1484 | rv = ptob->seek (fd_port, off, how); |
23f2b9a3 | 1485 | return scm_from_off_t (rv); |
840ae05d JB |
1486 | } |
1487 | else /* file descriptor?. */ | |
1488 | { | |
23f2b9a3 KR |
1489 | off_t_or_off64_t off = scm_to_off_t_or_off64_t (offset); |
1490 | off_t_or_off64_t rv; | |
1491 | rv = lseek_or_lseek64 (scm_to_int (fd_port), off, how); | |
840ae05d | 1492 | if (rv == -1) |
1bbd0b84 | 1493 | SCM_SYSERROR; |
23f2b9a3 | 1494 | return scm_from_off_t_or_off64_t (rv); |
840ae05d | 1495 | } |
840ae05d | 1496 | } |
1bbd0b84 | 1497 | #undef FUNC_NAME |
840ae05d | 1498 | |
8ab3d8a0 KR |
1499 | #ifndef O_BINARY |
1500 | #define O_BINARY 0 | |
1501 | #endif | |
1502 | ||
1503 | /* Mingw has ftruncate(), perhaps implemented above using chsize, but | |
1504 | doesn't have the filename version truncate(), hence this code. */ | |
1505 | #if HAVE_FTRUNCATE && ! HAVE_TRUNCATE | |
1506 | static int | |
1507 | truncate (const char *file, off_t length) | |
82893676 | 1508 | { |
8ab3d8a0 KR |
1509 | int ret, fdes; |
1510 | ||
1511 | fdes = open (file, O_BINARY | O_WRONLY); | |
1512 | if (fdes == -1) | |
1513 | return -1; | |
1514 | ||
1515 | ret = ftruncate (fdes, length); | |
1516 | if (ret == -1) | |
82893676 | 1517 | { |
8ab3d8a0 | 1518 | int save_errno = errno; |
82893676 | 1519 | close (fdes); |
8ab3d8a0 KR |
1520 | errno = save_errno; |
1521 | return -1; | |
82893676 | 1522 | } |
8ab3d8a0 KR |
1523 | |
1524 | return close (fdes); | |
82893676 | 1525 | } |
8ab3d8a0 | 1526 | #endif /* HAVE_FTRUNCATE && ! HAVE_TRUNCATE */ |
82893676 | 1527 | |
a1ec6916 | 1528 | SCM_DEFINE (scm_truncate_file, "truncate-file", 1, 1, 0, |
1bbd0b84 | 1529 | (SCM object, SCM length), |
8ab3d8a0 KR |
1530 | "Truncate @var{file} to @var{length} bytes. @var{file} can be a\n" |
1531 | "filename string, a port object, or an integer file descriptor.\n" | |
1532 | "The return value is unspecified.\n" | |
1533 | "\n" | |
1534 | "For a port or file descriptor @var{length} can be omitted, in\n" | |
1535 | "which case the file is truncated at the current position (per\n" | |
1536 | "@code{ftell} above).\n" | |
1537 | "\n" | |
1538 | "On most systems a file can be extended by giving a length\n" | |
1539 | "greater than the current size, but this is not mandatory in the\n" | |
1540 | "POSIX standard.") | |
1bbd0b84 | 1541 | #define FUNC_NAME s_scm_truncate_file |
840ae05d | 1542 | { |
69bc9ff3 | 1543 | int rv; |
69bc9ff3 | 1544 | |
2b829bbb KR |
1545 | /* "object" can be a port, fdes or filename. |
1546 | ||
1547 | Negative "length" makes no sense, but it's left to truncate() or | |
1548 | ftruncate() to give back an error for that (normally EINVAL). | |
1549 | */ | |
840ae05d | 1550 | |
840ae05d JB |
1551 | if (SCM_UNBNDP (length)) |
1552 | { | |
69bc9ff3 | 1553 | /* must supply length if object is a filename. */ |
7f9994d9 | 1554 | if (scm_is_string (object)) |
34d19ef6 | 1555 | SCM_MISC_ERROR("must supply length if OBJECT is a filename", SCM_EOL); |
69bc9ff3 | 1556 | |
e11e83f3 | 1557 | length = scm_seek (object, SCM_INUM0, scm_from_int (SEEK_CUR)); |
840ae05d | 1558 | } |
3fe6190f | 1559 | |
69bc9ff3 | 1560 | object = SCM_COERCE_OUTPORT (object); |
e11e83f3 | 1561 | if (scm_is_integer (object)) |
69bc9ff3 | 1562 | { |
23f2b9a3 KR |
1563 | off_t_or_off64_t c_length = scm_to_off_t_or_off64_t (length); |
1564 | SCM_SYSCALL (rv = ftruncate_or_ftruncate64 (scm_to_int (object), | |
1565 | c_length)); | |
69bc9ff3 | 1566 | } |
8ab3d8a0 KR |
1567 | else if (SCM_OPOUTFPORTP (object)) |
1568 | { | |
1569 | /* go direct to fport code to allow 64-bit offsets */ | |
1570 | rv = scm_i_fport_truncate (object, length); | |
1571 | } | |
0c95b57d | 1572 | else if (SCM_OPOUTPORTP (object)) |
69bc9ff3 | 1573 | { |
2b829bbb | 1574 | off_t c_length = scm_to_off_t (length); |
92c2555f MV |
1575 | scm_t_port *pt = SCM_PTAB_ENTRY (object); |
1576 | scm_t_ptob_descriptor *ptob = scm_ptobs + SCM_PTOBNUM (object); | |
69bc9ff3 | 1577 | |
affc96b5 | 1578 | if (!ptob->truncate) |
1bbd0b84 | 1579 | SCM_MISC_ERROR ("port is not truncatable", SCM_EOL); |
69bc9ff3 | 1580 | if (pt->rw_active == SCM_PORT_READ) |
affc96b5 | 1581 | scm_end_input (object); |
69bc9ff3 | 1582 | else if (pt->rw_active == SCM_PORT_WRITE) |
affc96b5 | 1583 | ptob->flush (object); |
69bc9ff3 | 1584 | |
affc96b5 | 1585 | ptob->truncate (object, c_length); |
69bc9ff3 GH |
1586 | rv = 0; |
1587 | } | |
1588 | else | |
1589 | { | |
2b829bbb | 1590 | off_t_or_off64_t c_length = scm_to_off_t_or_off64_t (length); |
7f9994d9 MV |
1591 | char *str = scm_to_locale_string (object); |
1592 | int eno; | |
2b829bbb | 1593 | SCM_SYSCALL (rv = truncate_or_truncate64 (str, c_length)); |
7f9994d9 MV |
1594 | eno = errno; |
1595 | free (str); | |
1596 | errno = eno; | |
69bc9ff3 GH |
1597 | } |
1598 | if (rv == -1) | |
1bbd0b84 | 1599 | SCM_SYSERROR; |
840ae05d JB |
1600 | return SCM_UNSPECIFIED; |
1601 | } | |
1bbd0b84 | 1602 | #undef FUNC_NAME |
840ae05d | 1603 | |
a1ec6916 | 1604 | SCM_DEFINE (scm_port_line, "port-line", 1, 0, 0, |
1bbd0b84 | 1605 | (SCM port), |
a150979d KR |
1606 | "Return the current line number for @var{port}.\n" |
1607 | "\n" | |
1608 | "The first line of a file is 0. But you might want to add 1\n" | |
1609 | "when printing line numbers, since starting from 1 is\n" | |
1610 | "traditional in error messages, and likely to be more natural to\n" | |
1611 | "non-programmers.") | |
1bbd0b84 | 1612 | #define FUNC_NAME s_scm_port_line |
0f2d19dd | 1613 | { |
78446828 | 1614 | port = SCM_COERCE_OUTPORT (port); |
34d19ef6 | 1615 | SCM_VALIDATE_OPENPORT (1, port); |
e11e83f3 | 1616 | return scm_from_int (SCM_LINUM (port)); |
0f2d19dd | 1617 | } |
1bbd0b84 | 1618 | #undef FUNC_NAME |
0f2d19dd | 1619 | |
a1ec6916 | 1620 | SCM_DEFINE (scm_set_port_line_x, "set-port-line!", 2, 0, 0, |
1bbd0b84 | 1621 | (SCM port, SCM line), |
a150979d KR |
1622 | "Set the current line number for @var{port} to @var{line}. The\n" |
1623 | "first line of a file is 0.") | |
1bbd0b84 | 1624 | #define FUNC_NAME s_scm_set_port_line_x |
d043d8c2 | 1625 | { |
360fc44c | 1626 | port = SCM_COERCE_OUTPORT (port); |
34d19ef6 | 1627 | SCM_VALIDATE_OPENPORT (1, port); |
a55c2b68 | 1628 | SCM_PTAB_ENTRY (port)->line_number = scm_to_int (line); |
564478fd | 1629 | return SCM_UNSPECIFIED; |
d043d8c2 | 1630 | } |
1bbd0b84 | 1631 | #undef FUNC_NAME |
d043d8c2 | 1632 | |
a1ec6916 | 1633 | SCM_DEFINE (scm_port_column, "port-column", 1, 0, 0, |
1bbd0b84 | 1634 | (SCM port), |
a150979d KR |
1635 | "Return the current column number of @var{port}.\n" |
1636 | "If the number is\n" | |
b380b885 MD |
1637 | "unknown, the result is #f. Otherwise, the result is a 0-origin integer\n" |
1638 | "- i.e. the first character of the first line is line 0, column 0.\n" | |
1639 | "(However, when you display a file position, for example in an error\n" | |
650a1cf9 | 1640 | "message, we recommend you add 1 to get 1-origin integers. This is\n" |
b380b885 MD |
1641 | "because lines and column numbers traditionally start with 1, and that is\n" |
1642 | "what non-programmers will find most natural.)") | |
1bbd0b84 | 1643 | #define FUNC_NAME s_scm_port_column |
0f2d19dd | 1644 | { |
78446828 | 1645 | port = SCM_COERCE_OUTPORT (port); |
34d19ef6 | 1646 | SCM_VALIDATE_OPENPORT (1, port); |
e11e83f3 | 1647 | return scm_from_int (SCM_COL (port)); |
0f2d19dd | 1648 | } |
1bbd0b84 | 1649 | #undef FUNC_NAME |
0f2d19dd | 1650 | |
a1ec6916 | 1651 | SCM_DEFINE (scm_set_port_column_x, "set-port-column!", 2, 0, 0, |
1bbd0b84 | 1652 | (SCM port, SCM column), |
a150979d KR |
1653 | "Set the current column of @var{port}. Before reading the first\n" |
1654 | "character on a line the column should be 0.") | |
1bbd0b84 | 1655 | #define FUNC_NAME s_scm_set_port_column_x |
d043d8c2 | 1656 | { |
360fc44c | 1657 | port = SCM_COERCE_OUTPORT (port); |
34d19ef6 | 1658 | SCM_VALIDATE_OPENPORT (1, port); |
a55c2b68 | 1659 | SCM_PTAB_ENTRY (port)->column_number = scm_to_int (column); |
564478fd | 1660 | return SCM_UNSPECIFIED; |
d043d8c2 | 1661 | } |
1bbd0b84 | 1662 | #undef FUNC_NAME |
d043d8c2 | 1663 | |
a1ec6916 | 1664 | SCM_DEFINE (scm_port_filename, "port-filename", 1, 0, 0, |
1bbd0b84 | 1665 | (SCM port), |
b380b885 | 1666 | "Return the filename associated with @var{port}. This function returns\n" |
2a2a730b | 1667 | "the strings \"standard input\", \"standard output\" and \"standard error\"\n" |
a3c8b9fc | 1668 | "when called on the current input, output and error ports respectively.") |
1bbd0b84 | 1669 | #define FUNC_NAME s_scm_port_filename |
0f2d19dd | 1670 | { |
78446828 | 1671 | port = SCM_COERCE_OUTPORT (port); |
34d19ef6 | 1672 | SCM_VALIDATE_OPENPORT (1, port); |
b24b5e13 | 1673 | return SCM_FILENAME (port); |
0f2d19dd | 1674 | } |
1bbd0b84 | 1675 | #undef FUNC_NAME |
0f2d19dd | 1676 | |
a1ec6916 | 1677 | SCM_DEFINE (scm_set_port_filename_x, "set-port-filename!", 2, 0, 0, |
1bbd0b84 | 1678 | (SCM port, SCM filename), |
b380b885 MD |
1679 | "Change the filename associated with @var{port}, using the current input\n" |
1680 | "port if none is specified. Note that this does not change the port's\n" | |
1681 | "source of data, but only the value that is returned by\n" | |
1682 | "@code{port-filename} and reported in diagnostic output.") | |
1bbd0b84 | 1683 | #define FUNC_NAME s_scm_set_port_filename_x |
d14af9f2 | 1684 | { |
360fc44c | 1685 | port = SCM_COERCE_OUTPORT (port); |
34d19ef6 | 1686 | SCM_VALIDATE_OPENPORT (1, port); |
360fc44c | 1687 | /* We allow the user to set the filename to whatever he likes. */ |
b24b5e13 DH |
1688 | SCM_SET_FILENAME (port, filename); |
1689 | return SCM_UNSPECIFIED; | |
d14af9f2 | 1690 | } |
1bbd0b84 | 1691 | #undef FUNC_NAME |
d14af9f2 | 1692 | |
f12733c9 MD |
1693 | void |
1694 | scm_print_port_mode (SCM exp, SCM port) | |
1695 | { | |
1696 | scm_puts (SCM_CLOSEDP (exp) | |
1697 | ? "closed: " | |
f9a64404 DH |
1698 | : (SCM_RDNG & SCM_CELL_WORD_0 (exp) |
1699 | ? (SCM_WRTNG & SCM_CELL_WORD_0 (exp) | |
f12733c9 MD |
1700 | ? "input-output: " |
1701 | : "input: ") | |
f9a64404 | 1702 | : (SCM_WRTNG & SCM_CELL_WORD_0 (exp) |
f12733c9 MD |
1703 | ? "output: " |
1704 | : "bogus: ")), | |
1705 | port); | |
1706 | } | |
1cc91f1b | 1707 | |
f12733c9 | 1708 | int |
e81d98ec | 1709 | scm_port_print (SCM exp, SCM port, scm_print_state *pstate SCM_UNUSED) |
0f2d19dd | 1710 | { |
f12733c9 MD |
1711 | char *type = SCM_PTOBNAME (SCM_PTOBNUM (exp)); |
1712 | if (!type) | |
1713 | type = "port"; | |
b7f3516f | 1714 | scm_puts ("#<", port); |
f12733c9 | 1715 | scm_print_port_mode (exp, port); |
b7f3516f TT |
1716 | scm_puts (type, port); |
1717 | scm_putc (' ', port); | |
0345e278 | 1718 | scm_uintprint (SCM_CELL_WORD_1 (exp), 16, port); |
b7f3516f | 1719 | scm_putc ('>', port); |
f12733c9 | 1720 | return 1; |
0f2d19dd JB |
1721 | } |
1722 | ||
0f2d19dd JB |
1723 | void |
1724 | scm_ports_prehistory () | |
0f2d19dd JB |
1725 | { |
1726 | scm_numptob = 0; | |
fca43887 LC |
1727 | scm_ptobs = NULL; |
1728 | ||
651a0735 LC |
1729 | /* In order for the ports to be collectable, the port table must not be |
1730 | scanned by the GC. */ | |
1731 | scm_i_port_table = | |
1732 | scm_gc_malloc_pointerless (scm_i_port_table_room | |
1733 | * sizeof (scm_t_port *), | |
1734 | "port-table"); | |
0f2d19dd | 1735 | } |
0f2d19dd JB |
1736 | |
1737 | \f | |
ee149d03 | 1738 | |
d68fee48 | 1739 | /* Void ports. */ |
0f2d19dd | 1740 | |
92c2555f | 1741 | scm_t_bits scm_tc16_void_port = 0; |
0f2d19dd | 1742 | |
e81d98ec | 1743 | static int fill_input_void_port (SCM port SCM_UNUSED) |
283a1a0e | 1744 | { |
70df8af6 | 1745 | return EOF; |
283a1a0e GH |
1746 | } |
1747 | ||
31703ab8 | 1748 | static void |
e81d98ec DH |
1749 | write_void_port (SCM port SCM_UNUSED, |
1750 | const void *data SCM_UNUSED, | |
1751 | size_t size SCM_UNUSED) | |
31703ab8 GH |
1752 | { |
1753 | } | |
1754 | ||
d617ee18 MV |
1755 | static SCM |
1756 | scm_i_void_port (long mode_bits) | |
0f2d19dd | 1757 | { |
9de87eea | 1758 | scm_i_scm_pthread_mutex_lock (&scm_i_port_table_mutex); |
402788a9 | 1759 | { |
da220f27 HWN |
1760 | SCM answer = scm_new_port_table_entry (scm_tc16_void_port); |
1761 | scm_t_port * pt = SCM_PTAB_ENTRY(answer); | |
1762 | ||
402788a9 | 1763 | scm_port_non_buffer (pt); |
402788a9 HWN |
1764 | |
1765 | SCM_SETSTREAM (answer, 0); | |
1766 | SCM_SET_CELL_TYPE (answer, scm_tc16_void_port | mode_bits); | |
9de87eea | 1767 | scm_i_pthread_mutex_unlock (&scm_i_port_table_mutex); |
402788a9 HWN |
1768 | return answer; |
1769 | } | |
0f2d19dd JB |
1770 | } |
1771 | ||
d617ee18 MV |
1772 | SCM |
1773 | scm_void_port (char *mode_str) | |
1774 | { | |
1775 | return scm_i_void_port (scm_mode_bits (mode_str)); | |
1776 | } | |
1777 | ||
a1ec6916 | 1778 | SCM_DEFINE (scm_sys_make_void_port, "%make-void-port", 1, 0, 0, |
1bbd0b84 | 1779 | (SCM mode), |
70df8af6 | 1780 | "Create and return a new void port. A void port acts like\n" |
bb2c02f2 | 1781 | "@file{/dev/null}. The @var{mode} argument\n" |
70df8af6 | 1782 | "specifies the input/output modes for this port: see the\n" |
b380b885 | 1783 | "documentation for @code{open-file} in @ref{File Ports}.") |
1bbd0b84 | 1784 | #define FUNC_NAME s_scm_sys_make_void_port |
0f2d19dd | 1785 | { |
d617ee18 | 1786 | return scm_i_void_port (scm_i_mode_bits (mode)); |
0f2d19dd | 1787 | } |
1bbd0b84 | 1788 | #undef FUNC_NAME |
0f2d19dd | 1789 | |
0f2d19dd | 1790 | \f |
89545eba | 1791 | /* Initialization. */ |
1cc91f1b | 1792 | |
0f2d19dd JB |
1793 | void |
1794 | scm_init_ports () | |
0f2d19dd | 1795 | { |
840ae05d | 1796 | /* lseek() symbols. */ |
e11e83f3 MV |
1797 | scm_c_define ("SEEK_SET", scm_from_int (SEEK_SET)); |
1798 | scm_c_define ("SEEK_CUR", scm_from_int (SEEK_CUR)); | |
1799 | scm_c_define ("SEEK_END", scm_from_int (SEEK_END)); | |
840ae05d | 1800 | |
70df8af6 GH |
1801 | scm_tc16_void_port = scm_make_port_type ("void", fill_input_void_port, |
1802 | write_void_port); | |
9de87eea MV |
1803 | |
1804 | cur_inport_fluid = scm_permanent_object (scm_make_fluid ()); | |
1805 | cur_outport_fluid = scm_permanent_object (scm_make_fluid ()); | |
1806 | cur_errport_fluid = scm_permanent_object (scm_make_fluid ()); | |
1807 | cur_loadport_fluid = scm_permanent_object (scm_make_fluid ()); | |
1808 | ||
a0599745 | 1809 | #include "libguile/ports.x" |
0f2d19dd | 1810 | } |
89e00824 ML |
1811 | |
1812 | /* | |
1813 | Local Variables: | |
1814 | c-file-style: "gnu" | |
1815 | End: | |
1816 | */ |