Commit | Line | Data |
---|---|---|
840ae05d | 1 | /* Copyright (C) 1995,1996,1997,1998,1999 Free Software Foundation, Inc. |
0f2d19dd JB |
2 | * |
3 | * This program is free software; you can redistribute it and/or modify | |
4 | * it under the terms of the GNU General Public License as published by | |
5 | * the Free Software Foundation; either version 2, or (at your option) | |
6 | * any later version. | |
7 | * | |
8 | * This program 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 | |
11 | * GNU General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License | |
14 | * along with this software; see the file COPYING. If not, write to | |
82892bed JB |
15 | * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, |
16 | * Boston, MA 02111-1307 USA | |
0f2d19dd JB |
17 | * |
18 | * As a special exception, the Free Software Foundation gives permission | |
19 | * for additional uses of the text contained in its release of GUILE. | |
20 | * | |
21 | * The exception is that, if you link the GUILE library with other files | |
22 | * to produce an executable, this does not by itself cause the | |
23 | * resulting executable to be covered by the GNU General Public License. | |
24 | * Your use of that executable is in no way restricted on account of | |
25 | * linking the GUILE library code into it. | |
26 | * | |
27 | * This exception does not however invalidate any other reasons why | |
28 | * the executable file might be covered by the GNU General Public License. | |
29 | * | |
30 | * This exception applies only to the code released by the | |
31 | * Free Software Foundation under the name GUILE. If you copy | |
32 | * code from other Free Software Foundation releases into a copy of | |
33 | * GUILE, as the General Public License permits, the exception does | |
34 | * not apply to the code that you add in this way. To avoid misleading | |
35 | * anyone as to the status of such modified files, you must delete | |
36 | * this exception notice from them. | |
37 | * | |
38 | * If you write modifications of your own for GUILE, it is your choice | |
39 | * whether to permit this exception to apply to your modifications. | |
82892bed | 40 | * If you do not wish that, delete this exception notice. */ |
1bbd0b84 GB |
41 | |
42 | /* Software engineering face-lift by Greg J. Badros, 11-Dec-1999, | |
43 | gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */ | |
44 | ||
0f2d19dd | 45 | \f |
d68fee48 JB |
46 | /* Headers. */ |
47 | ||
0f2d19dd JB |
48 | #include <stdio.h> |
49 | #include "_scm.h" | |
f12733c9 MD |
50 | #include "objects.h" |
51 | #include "smob.h" | |
20e6290e | 52 | #include "chars.h" |
0f2d19dd | 53 | |
547e65b5 | 54 | #include "keywords.h" |
20e6290e | 55 | |
1bbd0b84 | 56 | #include "scm_validate.h" |
20e6290e | 57 | #include "ports.h" |
0f2d19dd | 58 | |
bd9e24b3 GH |
59 | #ifdef HAVE_STRING_H |
60 | #include <string.h> | |
61 | #endif | |
62 | ||
0f2d19dd | 63 | #ifdef HAVE_MALLOC_H |
95b88819 | 64 | #include <malloc.h> |
0f2d19dd JB |
65 | #endif |
66 | ||
67 | #ifdef HAVE_UNISTD_H | |
68 | #include <unistd.h> | |
69 | #endif | |
70 | ||
95b88819 GH |
71 | #ifdef HAVE_SYS_IOCTL_H |
72 | #include <sys/ioctl.h> | |
73 | #endif | |
d68fee48 | 74 | |
0f2d19dd | 75 | \f |
d68fee48 | 76 | /* The port kind table --- a dynamically resized array of port types. */ |
0f2d19dd JB |
77 | |
78 | ||
79 | /* scm_ptobs scm_numptob | |
80 | * implement a dynamicly resized array of ptob records. | |
81 | * Indexes into this table are used when generating type | |
82 | * tags for smobjects (if you know a tag you can get an index and conversely). | |
83 | */ | |
f12733c9 | 84 | scm_ptob_descriptor *scm_ptobs; |
a1c95c45 | 85 | int scm_numptob; |
0f2d19dd | 86 | |
ee149d03 | 87 | /* GC marker for a port with stream of SCM type. */ |
0f2d19dd | 88 | SCM |
a284e297 | 89 | scm_markstream (SCM ptr) |
0f2d19dd JB |
90 | { |
91 | int openp; | |
0f2d19dd | 92 | openp = SCM_CAR (ptr) & SCM_OPN; |
0f2d19dd JB |
93 | if (openp) |
94 | return SCM_STREAM (ptr); | |
95 | else | |
96 | return SCM_BOOL_F; | |
97 | } | |
98 | ||
f12733c9 | 99 | /* |
f12733c9 | 100 | * We choose to use an interface similar to the smob interface with |
affc96b5 | 101 | * fill_input and write as standard fields, passed to the port |
f12733c9 MD |
102 | * type constructor, and optional fields set by setters. |
103 | */ | |
104 | ||
105 | static void flush_void_port (SCM port); | |
affc96b5 | 106 | static void end_input_void_port (SCM port, int offset); |
8aa011a1 | 107 | static void write_void_port (SCM port, const void *data, size_t size); |
0f2d19dd | 108 | |
0f2d19dd | 109 | long |
f12733c9 | 110 | scm_make_port_type (char *name, |
affc96b5 | 111 | int (*fill_input) (SCM port), |
8aa011a1 | 112 | void (*write) (SCM port, const void *data, size_t size)) |
0f2d19dd JB |
113 | { |
114 | char *tmp; | |
115 | if (255 <= scm_numptob) | |
116 | goto ptoberr; | |
f12733c9 MD |
117 | SCM_DEFER_INTS; |
118 | SCM_SYSCALL (tmp = (char *) realloc ((char *) scm_ptobs, | |
119 | (1 + scm_numptob) | |
120 | * sizeof (scm_ptob_descriptor))); | |
0f2d19dd JB |
121 | if (tmp) |
122 | { | |
f12733c9 | 123 | scm_ptobs = (scm_ptob_descriptor *) tmp; |
affc96b5 | 124 | |
f12733c9 MD |
125 | scm_ptobs[scm_numptob].name = name; |
126 | scm_ptobs[scm_numptob].mark = 0; | |
127 | scm_ptobs[scm_numptob].free = scm_free0; | |
128 | scm_ptobs[scm_numptob].print = scm_port_print; | |
129 | scm_ptobs[scm_numptob].equalp = 0; | |
affc96b5 GH |
130 | scm_ptobs[scm_numptob].close = 0; |
131 | ||
132 | scm_ptobs[scm_numptob].write = write; | |
133 | scm_ptobs[scm_numptob].flush = flush_void_port; | |
134 | ||
135 | scm_ptobs[scm_numptob].end_input = end_input_void_port; | |
136 | scm_ptobs[scm_numptob].fill_input = fill_input; | |
137 | scm_ptobs[scm_numptob].input_waiting = 0; | |
138 | ||
f12733c9 | 139 | scm_ptobs[scm_numptob].seek = 0; |
affc96b5 GH |
140 | scm_ptobs[scm_numptob].truncate = 0; |
141 | ||
0f2d19dd JB |
142 | scm_numptob++; |
143 | } | |
f12733c9 | 144 | SCM_ALLOW_INTS; |
0f2d19dd | 145 | if (!tmp) |
f12733c9 MD |
146 | ptoberr:scm_wta (SCM_MAKINUM ((long) scm_numptob), |
147 | (char *) SCM_NALLOC, "scm_make_port_type"); | |
148 | /* Make a class object if Goops is present */ | |
149 | if (scm_port_class) | |
150 | scm_make_port_classes (scm_numptob - 1, SCM_PTOBNAME (scm_numptob - 1)); | |
0f2d19dd JB |
151 | return scm_tc7_port + (scm_numptob - 1) * 256; |
152 | } | |
153 | ||
f12733c9 | 154 | void |
6c747373 | 155 | scm_set_port_mark (long tc, SCM (*mark) (SCM)) |
f12733c9 MD |
156 | { |
157 | scm_ptobs[SCM_TC2PTOBNUM (tc)].mark = mark; | |
158 | } | |
159 | ||
160 | void | |
6c747373 | 161 | scm_set_port_free (long tc, scm_sizet (*free) (SCM)) |
f12733c9 MD |
162 | { |
163 | scm_ptobs[SCM_TC2PTOBNUM (tc)].free = free; | |
164 | } | |
165 | ||
166 | void | |
6c747373 | 167 | scm_set_port_print (long tc, int (*print) (SCM exp, SCM port, |
f12733c9 MD |
168 | scm_print_state *pstate)) |
169 | { | |
170 | scm_ptobs[SCM_TC2PTOBNUM (tc)].print = print; | |
171 | } | |
172 | ||
173 | void | |
6c747373 | 174 | scm_set_port_equalp (long tc, SCM (*equalp) (SCM, SCM)) |
f12733c9 MD |
175 | { |
176 | scm_ptobs[SCM_TC2PTOBNUM (tc)].equalp = equalp; | |
177 | } | |
178 | ||
31703ab8 | 179 | void |
affc96b5 | 180 | scm_set_port_flush (long tc, void (*flush) (SCM port)) |
31703ab8 | 181 | { |
affc96b5 | 182 | scm_ptobs[SCM_TC2PTOBNUM (tc)].flush = flush; |
31703ab8 GH |
183 | } |
184 | ||
f12733c9 | 185 | void |
affc96b5 | 186 | scm_set_port_end_input (long tc, void (*end_input) (SCM port, int offset)) |
f12733c9 | 187 | { |
affc96b5 | 188 | scm_ptobs[SCM_TC2PTOBNUM (tc)].end_input = end_input; |
f12733c9 MD |
189 | } |
190 | ||
191 | void | |
6c747373 | 192 | scm_set_port_close (long tc, int (*close) (SCM)) |
f12733c9 | 193 | { |
affc96b5 | 194 | scm_ptobs[SCM_TC2PTOBNUM (tc)].close = close; |
f12733c9 MD |
195 | } |
196 | ||
197 | void | |
6c747373 | 198 | scm_set_port_seek (long tc, off_t (*seek) (SCM port, |
f12733c9 MD |
199 | off_t OFFSET, |
200 | int WHENCE)) | |
201 | { | |
202 | scm_ptobs[SCM_TC2PTOBNUM (tc)].seek = seek; | |
203 | } | |
204 | ||
205 | void | |
6c747373 | 206 | scm_set_port_truncate (long tc, void (*truncate) (SCM port, off_t length)) |
f12733c9 | 207 | { |
affc96b5 | 208 | scm_ptobs[SCM_TC2PTOBNUM (tc)].truncate = truncate; |
f12733c9 MD |
209 | } |
210 | ||
211 | void | |
affc96b5 | 212 | scm_set_port_input_waiting (long tc, int (*input_waiting) (SCM)) |
f12733c9 | 213 | { |
affc96b5 | 214 | scm_ptobs[SCM_TC2PTOBNUM (tc)].input_waiting = input_waiting; |
f12733c9 MD |
215 | } |
216 | ||
0f2d19dd | 217 | \f |
0f2d19dd | 218 | |
3b3b36dd | 219 | SCM_DEFINE (scm_char_ready_p, "char-ready?", 0, 1, 0, |
1bbd0b84 | 220 | (SCM port), |
bfc46627 GB |
221 | "Returns @code{#t} if a character is ready on input @var{port} and\n" |
222 | "returns @code{#f} otherwise. If @code{char-ready?} returns @code{#t}\n" | |
223 | "then the next @code{read-char} operation on @var{port} is\n" | |
224 | "guaranteed not to hang. If @var{port} is a file port at end of\n" | |
225 | "file then @code{char-ready?} returns @code{#t}.\n" | |
226 | "@footnote{@code{char-ready?} exists to make it possible for a\n" | |
227 | "program to accept characters from interactive ports without getting\n" | |
228 | "stuck waiting for input. Any input editors associated with such ports\n" | |
229 | "must make sure that characters whose existence has been asserted by\n" | |
230 | "@code{char-ready?} cannot be rubbed out. If @code{char-ready?} were to\n" | |
231 | "return @code{#f} at end of file, a port at end of file would be\n" | |
232 | "indistinguishable from an interactive port that has no ready\n" | |
233 | "characters.}") | |
1bbd0b84 | 234 | #define FUNC_NAME s_scm_char_ready_p |
0f2d19dd | 235 | { |
ae4c4016 | 236 | scm_port *pt; |
6c951427 | 237 | |
0f2d19dd JB |
238 | if (SCM_UNBNDP (port)) |
239 | port = scm_cur_inp; | |
240 | else | |
3b3b36dd | 241 | SCM_VALIDATE_OPINPORT (1,port); |
d68fee48 | 242 | |
ae4c4016 JB |
243 | pt = SCM_PTAB_ENTRY (port); |
244 | ||
6c951427 GH |
245 | /* if the current read buffer is filled, or the |
246 | last pushed-back char has been read and the saved buffer is | |
247 | filled, result is true. */ | |
248 | if (pt->read_pos < pt->read_end | |
249 | || (pt->read_buf == pt->putback_buf | |
250 | && pt->saved_read_pos < pt->saved_read_end)) | |
0f2d19dd | 251 | return SCM_BOOL_T; |
ee149d03 JB |
252 | else |
253 | { | |
f12733c9 | 254 | scm_ptob_descriptor *ptob = &scm_ptobs[SCM_PTOBNUM (port)]; |
ee149d03 | 255 | |
affc96b5 | 256 | if (ptob->input_waiting) |
1bbd0b84 | 257 | return SCM_BOOL(ptob->input_waiting (port)); |
ee149d03 | 258 | else |
6c951427 | 259 | return SCM_BOOL_T; |
ee149d03 | 260 | } |
0f2d19dd | 261 | } |
1bbd0b84 | 262 | #undef FUNC_NAME |
0f2d19dd | 263 | |
6c951427 | 264 | /* Clear a port's read buffers, returning the contents. */ |
a1ec6916 | 265 | SCM_DEFINE (scm_drain_input, "drain-input", 1, 0, 0, |
1bbd0b84 | 266 | (SCM port), |
b380b885 MD |
267 | "Drains @var{PORT}'s read buffers (including any pushed-back characters)\n" |
268 | "and returns the contents as a single string.") | |
1bbd0b84 | 269 | #define FUNC_NAME s_scm_drain_input |
ee149d03 | 270 | { |
840ae05d JB |
271 | SCM result; |
272 | scm_port *pt = SCM_PTAB_ENTRY (port); | |
6c951427 | 273 | int count; |
840ae05d | 274 | char *dst; |
ee149d03 | 275 | |
3b3b36dd | 276 | SCM_VALIDATE_OPINPORT (1,port); |
840ae05d | 277 | |
6c951427 GH |
278 | count = pt->read_end - pt->read_pos; |
279 | if (pt->read_buf == pt->putback_buf) | |
280 | count += pt->saved_read_end - pt->saved_read_pos; | |
840ae05d | 281 | |
6c951427 GH |
282 | result = scm_makstr (count, 0); |
283 | dst = SCM_CHARS (result); | |
840ae05d JB |
284 | |
285 | while (pt->read_pos < pt->read_end) | |
6c951427 GH |
286 | *dst++ = *(pt->read_pos++); |
287 | ||
288 | if (pt->read_buf == pt->putback_buf) | |
840ae05d | 289 | { |
6c951427 GH |
290 | while (pt->saved_read_pos < pt->saved_read_end) |
291 | *dst++ = *(pt->saved_read_pos++); | |
840ae05d | 292 | } |
6c951427 | 293 | |
840ae05d | 294 | return result; |
ee149d03 | 295 | } |
1bbd0b84 | 296 | #undef FUNC_NAME |
0f2d19dd JB |
297 | |
298 | \f | |
d68fee48 | 299 | /* Standard ports --- current input, output, error, and more(!). */ |
0f2d19dd | 300 | |
3b3b36dd | 301 | SCM_DEFINE (scm_current_input_port, "current-input-port", 0, 0, 0, |
1bbd0b84 | 302 | (), |
bfc46627 GB |
303 | "Returns the current input port. This is the default port used by many\n" |
304 | "input procedures. Initially, @code{current-input-port} returns the\n" | |
305 | "value of @code{???}.") | |
1bbd0b84 | 306 | #define FUNC_NAME s_scm_current_input_port |
0f2d19dd JB |
307 | { |
308 | return scm_cur_inp; | |
309 | } | |
1bbd0b84 | 310 | #undef FUNC_NAME |
0f2d19dd | 311 | |
3b3b36dd | 312 | SCM_DEFINE (scm_current_output_port, "current-output-port", 0, 0, 0, |
1bbd0b84 | 313 | (), |
bfc46627 GB |
314 | "Returns the current output port. This is the default port used by many\n" |
315 | "output procedures. Initially, @code{current-output-port} returns the\n" | |
316 | "value of @code{???}.") | |
1bbd0b84 | 317 | #define FUNC_NAME s_scm_current_output_port |
0f2d19dd JB |
318 | { |
319 | return scm_cur_outp; | |
320 | } | |
1bbd0b84 | 321 | #undef FUNC_NAME |
0f2d19dd | 322 | |
3b3b36dd | 323 | SCM_DEFINE (scm_current_error_port, "current-error-port", 0, 0, 0, |
1bbd0b84 | 324 | (), |
b380b885 MD |
325 | "Return the port to which errors and warnings should be sent (the\n" |
326 | "@dfn{standard error} in Unix and C terminology).") | |
1bbd0b84 | 327 | #define FUNC_NAME s_scm_current_error_port |
0f2d19dd JB |
328 | { |
329 | return scm_cur_errp; | |
330 | } | |
1bbd0b84 | 331 | #undef FUNC_NAME |
0f2d19dd | 332 | |
3b3b36dd | 333 | SCM_DEFINE (scm_current_load_port, "current-load-port", 0, 0, 0, |
1bbd0b84 | 334 | (), |
b450f070 GB |
335 | "Return the current-load-port.\n" |
336 | "The load port is used internally by `primitive-load'.") | |
1bbd0b84 | 337 | #define FUNC_NAME s_scm_current_load_port |
31614d8e MD |
338 | { |
339 | return scm_cur_loadp; | |
340 | } | |
1bbd0b84 | 341 | #undef FUNC_NAME |
31614d8e | 342 | |
3b3b36dd | 343 | SCM_DEFINE (scm_set_current_input_port, "set-current-input-port", 1, 0, 0, |
1bbd0b84 | 344 | (SCM port), |
b380b885 MD |
345 | "@deffnx primitive set-current-output-port port\n" |
346 | "@deffnx primitive set-current-error-port port\n" | |
347 | "Change the ports returned by @code{current-input-port},\n" | |
348 | "@code{current-output-port} and @code{current-error-port}, respectively,\n" | |
349 | "so that they use the supplied @var{port} for input or output.") | |
1bbd0b84 | 350 | #define FUNC_NAME s_scm_set_current_input_port |
0f2d19dd JB |
351 | { |
352 | SCM oinp = scm_cur_inp; | |
3b3b36dd | 353 | SCM_VALIDATE_OPINPORT (1,port); |
0f2d19dd JB |
354 | scm_cur_inp = port; |
355 | return oinp; | |
356 | } | |
1bbd0b84 | 357 | #undef FUNC_NAME |
0f2d19dd JB |
358 | |
359 | ||
3b3b36dd | 360 | SCM_DEFINE (scm_set_current_output_port, "set-current-output-port", 1, 0, 0, |
1bbd0b84 | 361 | (SCM port), |
b450f070 | 362 | "Set the current default output port to PORT.") |
1bbd0b84 | 363 | #define FUNC_NAME s_scm_set_current_output_port |
0f2d19dd JB |
364 | { |
365 | SCM ooutp = scm_cur_outp; | |
78446828 | 366 | port = SCM_COERCE_OUTPORT (port); |
3b3b36dd | 367 | SCM_VALIDATE_OPOUTPORT (1,port); |
0f2d19dd JB |
368 | scm_cur_outp = port; |
369 | return ooutp; | |
370 | } | |
1bbd0b84 | 371 | #undef FUNC_NAME |
0f2d19dd JB |
372 | |
373 | ||
3b3b36dd | 374 | SCM_DEFINE (scm_set_current_error_port, "set-current-error-port", 1, 0, 0, |
1bbd0b84 | 375 | (SCM port), |
b450f070 | 376 | "Set the current default error port to PORT.") |
1bbd0b84 | 377 | #define FUNC_NAME s_scm_set_current_error_port |
0f2d19dd JB |
378 | { |
379 | SCM oerrp = scm_cur_errp; | |
78446828 | 380 | port = SCM_COERCE_OUTPORT (port); |
3b3b36dd | 381 | SCM_VALIDATE_OPOUTPORT (1,port); |
0f2d19dd JB |
382 | scm_cur_errp = port; |
383 | return oerrp; | |
384 | } | |
1bbd0b84 | 385 | #undef FUNC_NAME |
0f2d19dd JB |
386 | |
387 | \f | |
840ae05d | 388 | /* The port table --- an array of pointers to ports. */ |
0f2d19dd | 389 | |
840ae05d | 390 | scm_port **scm_port_table; |
0f2d19dd JB |
391 | |
392 | int scm_port_table_size = 0; /* Number of ports in scm_port_table. */ | |
393 | int scm_port_table_room = 20; /* Size of the array. */ | |
394 | ||
ee149d03 | 395 | /* Add a port to the table. */ |
1cc91f1b | 396 | |
840ae05d | 397 | scm_port * |
a284e297 | 398 | scm_add_to_port_table (SCM port) |
0f2d19dd | 399 | { |
840ae05d JB |
400 | scm_port *entry; |
401 | ||
0f2d19dd JB |
402 | if (scm_port_table_size == scm_port_table_room) |
403 | { | |
ee149d03 | 404 | void *newt = realloc ((char *) scm_port_table, |
840ae05d | 405 | (scm_sizet) (sizeof (scm_port *) |
ee149d03 JB |
406 | * scm_port_table_room * 2)); |
407 | if (newt == NULL) | |
840ae05d JB |
408 | scm_memory_error ("scm_add_to_port_table"); |
409 | scm_port_table = (scm_port **) newt; | |
0f2d19dd JB |
410 | scm_port_table_room *= 2; |
411 | } | |
840ae05d JB |
412 | entry = (scm_port *) malloc (sizeof (scm_port)); |
413 | if (entry == NULL) | |
414 | scm_memory_error ("scm_add_to_port_table"); | |
415 | ||
416 | entry->port = port; | |
417 | entry->entry = scm_port_table_size; | |
418 | entry->revealed = 0; | |
419 | entry->stream = 0; | |
420 | entry->file_name = SCM_BOOL_F; | |
421 | entry->line_number = 0; | |
422 | entry->column_number = 0; | |
6c951427 GH |
423 | entry->putback_buf = 0; |
424 | entry->putback_buf_size = 0; | |
61e452ba | 425 | entry->rw_active = SCM_PORT_NEITHER; |
0de97b83 | 426 | entry->rw_random = 0; |
840ae05d JB |
427 | |
428 | scm_port_table[scm_port_table_size] = entry; | |
429 | scm_port_table_size++; | |
430 | ||
431 | return entry; | |
0f2d19dd JB |
432 | } |
433 | ||
6c951427 | 434 | /* Remove a port from the table and destroy it. */ |
1cc91f1b | 435 | |
0f2d19dd | 436 | void |
a284e297 | 437 | scm_remove_from_port_table (SCM port) |
0f2d19dd | 438 | { |
840ae05d | 439 | scm_port *p = SCM_PTAB_ENTRY (port); |
ee1e7e13 | 440 | int i = p->entry; |
6c951427 | 441 | |
ee1e7e13 MD |
442 | if (i >= scm_port_table_size) |
443 | scm_wta (port, "Port not in table", "scm_remove_from_port_table"); | |
6c951427 GH |
444 | if (p->putback_buf) |
445 | free (p->putback_buf); | |
840ae05d | 446 | free (p); |
ee1e7e13 MD |
447 | /* Since we have just freed slot i we can shrink the table by moving |
448 | the last entry to that slot... */ | |
449 | if (i < scm_port_table_size - 1) | |
0f2d19dd | 450 | { |
ee1e7e13 MD |
451 | scm_port_table[i] = scm_port_table[scm_port_table_size - 1]; |
452 | scm_port_table[i]->entry = i; | |
0f2d19dd | 453 | } |
0f2d19dd JB |
454 | SCM_SETPTAB_ENTRY (port, 0); |
455 | scm_port_table_size--; | |
456 | } | |
457 | ||
fea6b4ea | 458 | #ifdef GUILE_DEBUG |
b450f070 | 459 | /* Functions for debugging. */ |
1cc91f1b | 460 | |
3b3b36dd | 461 | SCM_DEFINE (scm_pt_size, "pt-size", 0, 0, 0, |
b450f070 GB |
462 | (), |
463 | "Returns the number of ports in the port table.\n" | |
464 | "`pt-size' is only included in GUILE_DEBUG builds.") | |
1bbd0b84 | 465 | #define FUNC_NAME s_scm_pt_size |
0f2d19dd JB |
466 | { |
467 | return SCM_MAKINUM (scm_port_table_size); | |
468 | } | |
1bbd0b84 | 469 | #undef FUNC_NAME |
0f2d19dd | 470 | |
3b3b36dd | 471 | SCM_DEFINE (scm_pt_member, "pt-member", 1, 0, 0, |
b450f070 GB |
472 | (SCM index), |
473 | "Returns the port at INDEX in the port table.\n" | |
474 | "`pt-member' is only included in GUILE_DEBUG builds.") | |
1bbd0b84 | 475 | #define FUNC_NAME s_scm_pt_member |
0f2d19dd JB |
476 | { |
477 | int i; | |
b450f070 | 478 | SCM_VALIDATE_INUM_COPY (1,index,i); |
0f2d19dd JB |
479 | if (i < 0 || i >= scm_port_table_size) |
480 | return SCM_BOOL_F; | |
481 | else | |
482 | return scm_port_table[i]->port; | |
483 | } | |
1bbd0b84 | 484 | #undef FUNC_NAME |
0f2d19dd JB |
485 | #endif |
486 | ||
487 | ||
d68fee48 JB |
488 | \f |
489 | /* Revealed counts --- an oddity inherited from SCSH. */ | |
490 | ||
8b13c6b3 GH |
491 | /* Find a port in the table and return its revealed count. |
492 | Also used by the garbage collector. | |
0f2d19dd | 493 | */ |
1cc91f1b | 494 | |
0f2d19dd | 495 | int |
a284e297 | 496 | scm_revealed_count (SCM port) |
0f2d19dd JB |
497 | { |
498 | return SCM_REVEALED(port); | |
499 | } | |
500 | ||
501 | ||
502 | ||
503 | /* Return the revealed count for a port. */ | |
504 | ||
3b3b36dd | 505 | SCM_DEFINE (scm_port_revealed, "port-revealed", 1, 0, 0, |
1bbd0b84 | 506 | (SCM port), |
b380b885 | 507 | "Returns the revealed count for @var{port}.") |
1bbd0b84 | 508 | #define FUNC_NAME s_scm_port_revealed |
0f2d19dd | 509 | { |
78446828 | 510 | port = SCM_COERCE_OUTPORT (port); |
3b3b36dd | 511 | SCM_VALIDATE_PORT (1,port); |
8b13c6b3 | 512 | return SCM_MAKINUM (scm_revealed_count (port)); |
0f2d19dd | 513 | } |
1bbd0b84 | 514 | #undef FUNC_NAME |
0f2d19dd JB |
515 | |
516 | /* Set the revealed count for a port. */ | |
3b3b36dd | 517 | SCM_DEFINE (scm_set_port_revealed_x, "set-port-revealed!", 2, 0, 0, |
1bbd0b84 | 518 | (SCM port, SCM rcount), |
b450f070 | 519 | "Sets the revealed count for a port to a given value.\n" |
b380b885 | 520 | "The return value is unspecified.") |
1bbd0b84 | 521 | #define FUNC_NAME s_scm_set_port_revealed_x |
0f2d19dd | 522 | { |
78446828 | 523 | port = SCM_COERCE_OUTPORT (port); |
3b3b36dd GB |
524 | SCM_VALIDATE_PORT (1,port); |
525 | SCM_VALIDATE_INUM (2,rcount); | |
0f2d19dd | 526 | SCM_REVEALED (port) = SCM_INUM (rcount); |
8b13c6b3 | 527 | return SCM_UNSPECIFIED; |
0f2d19dd | 528 | } |
1bbd0b84 | 529 | #undef FUNC_NAME |
0f2d19dd | 530 | |
d68fee48 JB |
531 | |
532 | \f | |
533 | /* Retrieving a port's mode. */ | |
534 | ||
eadd48de GH |
535 | /* Return the flags that characterize a port based on the mode |
536 | * string used to open a file for that port. | |
537 | * | |
538 | * See PORT FLAGS in scm.h | |
539 | */ | |
540 | ||
541 | long | |
a284e297 | 542 | scm_mode_bits (char *modes) |
eadd48de GH |
543 | { |
544 | return (SCM_OPN | |
545 | | (strchr (modes, 'r') || strchr (modes, '+') ? SCM_RDNG : 0) | |
546 | | ( strchr (modes, 'w') | |
547 | || strchr (modes, 'a') | |
548 | || strchr (modes, '+') ? SCM_WRTNG : 0) | |
ee149d03 JB |
549 | | (strchr (modes, '0') ? SCM_BUF0 : 0) |
550 | | (strchr (modes, 'l') ? SCM_BUFLINE : 0)); | |
eadd48de GH |
551 | } |
552 | ||
553 | ||
554 | /* Return the mode flags from an open port. | |
555 | * Some modes such as "append" are only used when opening | |
556 | * a file and are not returned here. */ | |
557 | ||
3b3b36dd | 558 | SCM_DEFINE (scm_port_mode, "port-mode", 1, 0, 0, |
1bbd0b84 | 559 | (SCM port), |
b380b885 MD |
560 | "Returns the port modes associated with the open port @var{port}. These\n" |
561 | "will not necessarily be identical to the modes used when the port was\n" | |
562 | "opened, since modes such as \"append\" which are used only during\n" | |
563 | "port creation are not retained.") | |
1bbd0b84 | 564 | #define FUNC_NAME s_scm_port_mode |
eadd48de GH |
565 | { |
566 | char modes[3]; | |
567 | modes[0] = '\0'; | |
78446828 MV |
568 | |
569 | port = SCM_COERCE_OUTPORT (port); | |
3b3b36dd | 570 | SCM_VALIDATE_OPPORT (1,port); |
eadd48de GH |
571 | if (SCM_CAR (port) & SCM_RDNG) { |
572 | if (SCM_CAR (port) & SCM_WRTNG) | |
573 | strcpy (modes, "r+"); | |
574 | else | |
575 | strcpy (modes, "r"); | |
576 | } | |
577 | else if (SCM_CAR (port) & SCM_WRTNG) | |
578 | strcpy (modes, "w"); | |
579 | if (SCM_CAR (port) & SCM_BUF0) | |
580 | strcat (modes, "0"); | |
581 | return scm_makfromstr (modes, strlen (modes), 0); | |
582 | } | |
1bbd0b84 | 583 | #undef FUNC_NAME |
eadd48de GH |
584 | |
585 | ||
d68fee48 JB |
586 | \f |
587 | /* Closing ports. */ | |
588 | ||
0f2d19dd JB |
589 | /* scm_close_port |
590 | * Call the close operation on a port object. | |
eadd48de | 591 | * see also scm_close. |
0f2d19dd | 592 | */ |
3b3b36dd | 593 | SCM_DEFINE (scm_close_port, "close-port", 1, 0, 0, |
1bbd0b84 | 594 | (SCM port), |
b380b885 MD |
595 | "Close the specified port object. Returns @code{#t} if it successfully\n" |
596 | "closes a port or @code{#f} if it was already\n" | |
597 | "closed. An exception may be raised if an error occurs, for example\n" | |
598 | "when flushing buffered output.\n" | |
599 | "See also @ref{Ports and File Descriptors, close}, for a procedure\n" | |
600 | "which can close file descriptors.") | |
1bbd0b84 | 601 | #define FUNC_NAME s_scm_close_port |
0f2d19dd JB |
602 | { |
603 | scm_sizet i; | |
eadd48de GH |
604 | int rv; |
605 | ||
78446828 MV |
606 | port = SCM_COERCE_OUTPORT (port); |
607 | ||
3b3b36dd | 608 | SCM_VALIDATE_PORT (1,port); |
0f2d19dd | 609 | if (SCM_CLOSEDP (port)) |
eadd48de | 610 | return SCM_BOOL_F; |
0f2d19dd | 611 | i = SCM_PTOBNUM (port); |
affc96b5 GH |
612 | if (scm_ptobs[i].close) |
613 | rv = (scm_ptobs[i].close) (port); | |
eadd48de GH |
614 | else |
615 | rv = 0; | |
0f2d19dd | 616 | scm_remove_from_port_table (port); |
898a256f | 617 | SCM_SETAND_CAR (port, ~SCM_OPN); |
1bbd0b84 | 618 | return SCM_NEGATE_BOOL(rv < 0); |
0f2d19dd | 619 | } |
1bbd0b84 | 620 | #undef FUNC_NAME |
0f2d19dd | 621 | |
3b3b36dd | 622 | SCM_DEFINE (scm_close_all_ports_except, "close-all-ports-except", 0, 0, 1, |
1bbd0b84 | 623 | (SCM ports), |
b380b885 MD |
624 | "Close all open file ports used by the interpreter\n" |
625 | "except for those supplied as arguments. This procedure\n" | |
626 | "is intended to be used before an exec call to close file descriptors\n" | |
627 | "which are not needed in the new process.Close all open file ports used by the interpreter\n" | |
628 | "except for those supplied as arguments. This procedure\n" | |
629 | "is intended to be used before an exec call to close file descriptors\n" | |
630 | "which are not needed in the new process.") | |
1bbd0b84 | 631 | #define FUNC_NAME s_scm_close_all_ports_except |
0f2d19dd JB |
632 | { |
633 | int i = 0; | |
3b3b36dd | 634 | SCM_VALIDATE_CONS (1,ports); |
0f2d19dd JB |
635 | while (i < scm_port_table_size) |
636 | { | |
637 | SCM thisport = scm_port_table[i]->port; | |
638 | int found = 0; | |
639 | SCM ports_ptr = ports; | |
640 | ||
641 | while (SCM_NNULLP (ports_ptr)) | |
642 | { | |
78446828 | 643 | SCM port = SCM_COERCE_OUTPORT (SCM_CAR (ports_ptr)); |
0f2d19dd | 644 | if (i == 0) |
3b3b36dd | 645 | SCM_VALIDATE_OPPORT (SCM_ARG1,port); |
0f2d19dd JB |
646 | if (port == thisport) |
647 | found = 1; | |
648 | ports_ptr = SCM_CDR (ports_ptr); | |
649 | } | |
650 | if (found) | |
651 | i++; | |
652 | else | |
653 | /* i is not to be incremented here. */ | |
654 | scm_close_port (thisport); | |
655 | } | |
0f2d19dd JB |
656 | return SCM_UNSPECIFIED; |
657 | } | |
1bbd0b84 | 658 | #undef FUNC_NAME |
0f2d19dd | 659 | |
d68fee48 JB |
660 | |
661 | \f | |
662 | /* Utter miscellany. Gosh, we should clean this up some time. */ | |
663 | ||
3b3b36dd | 664 | SCM_DEFINE (scm_input_port_p, "input-port?", 1, 0, 0, |
1bbd0b84 | 665 | (SCM x), |
bfc46627 GB |
666 | "Returns @code{#t} if @var{x} is an input port, otherwise returns\n" |
667 | "@code{#f}. Any object satisfying this predicate also satisfies\n" | |
668 | "@code{port?}.") | |
1bbd0b84 | 669 | #define FUNC_NAME s_scm_input_port_p |
0f2d19dd JB |
670 | { |
671 | if (SCM_IMP (x)) | |
4a94d8ca | 672 | return SCM_BOOL_F; |
1bbd0b84 | 673 | return SCM_BOOL(SCM_INPORTP (x)); |
0f2d19dd | 674 | } |
1bbd0b84 | 675 | #undef FUNC_NAME |
0f2d19dd | 676 | |
3b3b36dd | 677 | SCM_DEFINE (scm_output_port_p, "output-port?", 1, 0, 0, |
1bbd0b84 | 678 | (SCM x), |
bfc46627 GB |
679 | "Returns @code{#t} if @var{x} is an output port, otherwise returns\n" |
680 | "@code{#f}. Any object satisfying this predicate also satisfies\n" | |
681 | "@code{port?}.") | |
1bbd0b84 | 682 | #define FUNC_NAME s_scm_output_port_p |
0f2d19dd JB |
683 | { |
684 | if (SCM_IMP (x)) | |
4a94d8ca MD |
685 | return SCM_BOOL_F; |
686 | if (SCM_PORT_WITH_PS_P (x)) | |
687 | x = SCM_PORT_WITH_PS_PORT (x); | |
1bbd0b84 | 688 | return SCM_BOOL(SCM_OUTPORTP (x)); |
0f2d19dd | 689 | } |
1bbd0b84 | 690 | #undef FUNC_NAME |
0f2d19dd | 691 | |
3b3b36dd | 692 | SCM_DEFINE (scm_port_closed_p, "port-closed?", 1, 0, 0, |
1bbd0b84 | 693 | (SCM port), |
b380b885 | 694 | "Returns @code{#t} if @var{port} is closed or @code{#f} if it is open.") |
1bbd0b84 | 695 | #define FUNC_NAME s_scm_port_closed_p |
60d0643d | 696 | { |
c1bfcf60 | 697 | SCM_VALIDATE_PORT (1,port); |
1bbd0b84 | 698 | return SCM_NEGATE_BOOL(SCM_OPPORTP (port)); |
60d0643d | 699 | } |
1bbd0b84 | 700 | #undef FUNC_NAME |
0f2d19dd | 701 | |
3b3b36dd | 702 | SCM_DEFINE (scm_eof_object_p, "eof-object?", 1, 0, 0, |
1bbd0b84 | 703 | (SCM x), |
bfc46627 GB |
704 | "Returns @code{#t} if @var{x} is an end-of-file object; otherwise\n" |
705 | "returns @code{#f}.") | |
1bbd0b84 | 706 | #define FUNC_NAME s_scm_eof_object_p |
0f2d19dd | 707 | { |
1bbd0b84 | 708 | return SCM_BOOL(SCM_EOF_OBJECT_P (x)); |
0f2d19dd | 709 | } |
1bbd0b84 | 710 | #undef FUNC_NAME |
0f2d19dd | 711 | |
3b3b36dd | 712 | SCM_DEFINE (scm_force_output, "force-output", 0, 1, 0, |
1bbd0b84 | 713 | (SCM port), |
b380b885 MD |
714 | "Flush the specified output port, or the current output port if @var{port}\n" |
715 | "is omitted. The current output buffer contents are passed to the \n" | |
716 | "underlying port implementation (e.g., in the case of fports, the\n" | |
717 | "data will be written to the file and the output buffer will be cleared.)\n" | |
718 | "It has no effect on an unbuffered port.\n\n" | |
719 | "The return value is unspecified.") | |
1bbd0b84 | 720 | #define FUNC_NAME s_scm_force_output |
0f2d19dd JB |
721 | { |
722 | if (SCM_UNBNDP (port)) | |
3e877d15 | 723 | port = scm_cur_outp; |
0f2d19dd | 724 | else |
78446828 MV |
725 | { |
726 | port = SCM_COERCE_OUTPORT (port); | |
3b3b36dd | 727 | SCM_VALIDATE_OPOUTPORT (1,port); |
78446828 | 728 | } |
affc96b5 | 729 | scm_flush (port); |
ee149d03 | 730 | return SCM_UNSPECIFIED; |
0f2d19dd | 731 | } |
1bbd0b84 | 732 | #undef FUNC_NAME |
0f2d19dd | 733 | |
a1ec6916 | 734 | SCM_DEFINE (scm_flush_all_ports, "flush-all-ports", 0, 0, 0, |
1bbd0b84 | 735 | (), |
b380b885 MD |
736 | "Equivalent to calling @code{force-output} on\n" |
737 | "all open output ports. The return value is unspecified.") | |
1bbd0b84 | 738 | #define FUNC_NAME s_scm_flush_all_ports |
89ea5b7c GH |
739 | { |
740 | int i; | |
741 | ||
742 | for (i = 0; i < scm_port_table_size; i++) | |
743 | { | |
ee149d03 | 744 | if (SCM_OPOUTPORTP (scm_port_table[i]->port)) |
affc96b5 | 745 | scm_flush (scm_port_table[i]->port); |
89ea5b7c GH |
746 | } |
747 | return SCM_UNSPECIFIED; | |
748 | } | |
1bbd0b84 | 749 | #undef FUNC_NAME |
0f2d19dd | 750 | |
3b3b36dd | 751 | SCM_DEFINE (scm_read_char, "read-char", 0, 1, 0, |
1bbd0b84 | 752 | (SCM port), |
bfc46627 GB |
753 | "Returns the next character available from @var{port}, updating\n" |
754 | "@var{port} to point to the following character. If no more\n" | |
755 | "characters are available, an end-of-file object is returned.") | |
1bbd0b84 | 756 | #define FUNC_NAME s_scm_read_char |
0f2d19dd JB |
757 | { |
758 | int c; | |
759 | if (SCM_UNBNDP (port)) | |
334341aa | 760 | port = scm_cur_inp; |
3b3b36dd | 761 | SCM_VALIDATE_OPINPORT (1,port); |
b7f3516f | 762 | c = scm_getc (port); |
0f2d19dd JB |
763 | if (EOF == c) |
764 | return SCM_EOF_VAL; | |
765 | return SCM_MAKICHR (c); | |
766 | } | |
1bbd0b84 | 767 | #undef FUNC_NAME |
0f2d19dd | 768 | |
5c070ca7 | 769 | /* this should only be called when the read buffer is empty. it |
affc96b5 | 770 | tries to refill the read buffer. it returns the first char from |
5c070ca7 | 771 | the port, which is either EOF or *(pt->read_pos). */ |
6c951427 | 772 | int |
affc96b5 | 773 | scm_fill_input (SCM port) |
6c951427 | 774 | { |
283a1a0e GH |
775 | scm_port *pt = SCM_PTAB_ENTRY (port); |
776 | ||
6c951427 GH |
777 | if (pt->read_buf == pt->putback_buf) |
778 | { | |
779 | /* finished reading put-back chars. */ | |
780 | pt->read_buf = pt->saved_read_buf; | |
781 | pt->read_pos = pt->saved_read_pos; | |
782 | pt->read_end = pt->saved_read_end; | |
783 | pt->read_buf_size = pt->saved_read_buf_size; | |
784 | if (pt->read_pos < pt->read_end) | |
5c070ca7 | 785 | return *(pt->read_pos); |
6c951427 | 786 | } |
affc96b5 | 787 | return scm_ptobs[SCM_PTOBNUM (port)].fill_input (port); |
6c951427 GH |
788 | } |
789 | ||
ee149d03 | 790 | int |
a284e297 | 791 | scm_getc (SCM port) |
0f2d19dd JB |
792 | { |
793 | int c; | |
840ae05d | 794 | scm_port *pt = SCM_PTAB_ENTRY (port); |
ee149d03 | 795 | |
840ae05d JB |
796 | if (pt->rw_active == SCM_PORT_WRITE) |
797 | { | |
affc96b5 GH |
798 | /* may be marginally faster than calling scm_flush. */ |
799 | scm_ptobs[SCM_PTOBNUM (port)].flush (port); | |
840ae05d | 800 | } |
6c951427 | 801 | |
5c070ca7 GH |
802 | if (pt->rw_random) |
803 | pt->rw_active = SCM_PORT_READ; | |
804 | ||
805 | if (pt->read_pos >= pt->read_end) | |
ee149d03 | 806 | { |
affc96b5 | 807 | if (scm_fill_input (port) == EOF) |
5c070ca7 | 808 | return EOF; |
ee149d03 JB |
809 | } |
810 | ||
5c070ca7 | 811 | c = *(pt->read_pos++); |
840ae05d | 812 | |
ee149d03 JB |
813 | if (c == '\n') |
814 | { | |
815 | SCM_INCLINE (port); | |
816 | } | |
817 | else if (c == '\t') | |
818 | { | |
819 | SCM_TABCOL (port); | |
820 | } | |
821 | else | |
822 | { | |
823 | SCM_INCCOL (port); | |
824 | } | |
825 | ||
826 | return c; | |
0f2d19dd JB |
827 | } |
828 | ||
ee149d03 | 829 | void |
a284e297 | 830 | scm_putc (char c, SCM port) |
ee149d03 | 831 | { |
265e6a4d | 832 | scm_lfwrite (&c, 1, port); |
ee149d03 | 833 | } |
3cb988bd | 834 | |
ee149d03 | 835 | void |
70d63753 | 836 | scm_puts (const char *s, SCM port) |
3cb988bd | 837 | { |
265e6a4d | 838 | scm_lfwrite (s, strlen (s), port); |
ee149d03 | 839 | } |
3cb988bd | 840 | |
ee149d03 | 841 | void |
70d63753 | 842 | scm_lfwrite (const char *ptr, scm_sizet size, SCM port) |
ee149d03 | 843 | { |
840ae05d | 844 | scm_port *pt = SCM_PTAB_ENTRY (port); |
f12733c9 | 845 | scm_ptob_descriptor *ptob = &scm_ptobs[SCM_PTOBNUM (port)]; |
3e2043c4 | 846 | |
840ae05d | 847 | if (pt->rw_active == SCM_PORT_READ) |
affc96b5 | 848 | scm_end_input (port); |
283a1a0e | 849 | |
31703ab8 | 850 | ptob->write (port, ptr, size); |
840ae05d JB |
851 | |
852 | if (pt->rw_random) | |
853 | pt->rw_active = SCM_PORT_WRITE; | |
ee149d03 | 854 | } |
3cb988bd | 855 | |
3cb988bd | 856 | |
ee149d03 | 857 | void |
a284e297 | 858 | scm_flush (SCM port) |
ee149d03 JB |
859 | { |
860 | scm_sizet i = SCM_PTOBNUM (port); | |
affc96b5 | 861 | (scm_ptobs[i].flush) (port); |
ee149d03 JB |
862 | } |
863 | ||
283a1a0e | 864 | void |
a284e297 | 865 | scm_end_input (SCM port) |
283a1a0e GH |
866 | { |
867 | int offset; | |
868 | scm_port *pt = SCM_PTAB_ENTRY (port); | |
869 | ||
870 | if (pt->read_buf == pt->putback_buf) | |
871 | { | |
872 | offset = pt->read_end - pt->read_pos; | |
873 | pt->read_buf = pt->saved_read_buf; | |
874 | pt->read_pos = pt->saved_read_pos; | |
875 | pt->read_end = pt->saved_read_end; | |
876 | pt->read_buf_size = pt->saved_read_buf_size; | |
877 | } | |
878 | else | |
879 | offset = 0; | |
880 | ||
affc96b5 | 881 | scm_ptobs[SCM_PTOBNUM (port)].end_input (port, offset); |
283a1a0e GH |
882 | } |
883 | ||
ee149d03 JB |
884 | \f |
885 | ||
886 | ||
887 | void | |
a284e297 | 888 | scm_ungetc (int c, SCM port) |
ee149d03 | 889 | { |
840ae05d JB |
890 | scm_port *pt = SCM_PTAB_ENTRY (port); |
891 | ||
6c951427 GH |
892 | if (pt->read_buf == pt->putback_buf) |
893 | /* already using the put-back buffer. */ | |
894 | { | |
895 | /* enlarge putback_buf if necessary. */ | |
896 | if (pt->read_end == pt->read_buf + pt->read_buf_size | |
897 | && pt->read_buf == pt->read_pos) | |
898 | { | |
899 | int new_size = pt->read_buf_size * 2; | |
900 | unsigned char *tmp = | |
901 | (unsigned char *) realloc (pt->putback_buf, new_size); | |
902 | ||
903 | if (tmp == NULL) | |
904 | scm_memory_error ("scm_ungetc"); | |
905 | pt->read_pos = pt->read_buf = pt->putback_buf = tmp; | |
906 | pt->read_end = pt->read_buf + pt->read_buf_size; | |
907 | pt->read_buf_size = pt->putback_buf_size = new_size; | |
908 | } | |
909 | ||
910 | /* shift any existing bytes to buffer + 1. */ | |
911 | if (pt->read_pos == pt->read_end) | |
912 | pt->read_end = pt->read_buf + 1; | |
913 | else if (pt->read_pos != pt->read_buf + 1) | |
914 | { | |
915 | int count = pt->read_end - pt->read_pos; | |
916 | ||
917 | memmove (pt->read_buf + 1, pt->read_pos, count); | |
918 | pt->read_end = pt->read_buf + 1 + count; | |
919 | } | |
920 | ||
921 | pt->read_pos = pt->read_buf; | |
922 | } | |
923 | else | |
924 | /* switch to the put-back buffer. */ | |
925 | { | |
926 | if (pt->putback_buf == NULL) | |
927 | { | |
6e2e75db | 928 | pt->putback_buf = (char *) malloc (SCM_INITIAL_PUTBACK_BUF_SIZE); |
6c951427 GH |
929 | if (pt->putback_buf == NULL) |
930 | scm_memory_error ("scm_ungetc"); | |
931 | pt->putback_buf_size = SCM_INITIAL_PUTBACK_BUF_SIZE; | |
932 | } | |
933 | ||
934 | pt->saved_read_buf = pt->read_buf; | |
935 | pt->saved_read_pos = pt->read_pos; | |
936 | pt->saved_read_end = pt->read_end; | |
937 | pt->saved_read_buf_size = pt->read_buf_size; | |
938 | ||
939 | pt->read_pos = pt->read_buf = pt->putback_buf; | |
940 | pt->read_end = pt->read_buf + 1; | |
941 | pt->read_buf_size = pt->putback_buf_size; | |
942 | } | |
943 | ||
944 | *pt->read_buf = c; | |
ee149d03 | 945 | |
840ae05d JB |
946 | if (pt->rw_random) |
947 | pt->rw_active = SCM_PORT_READ; | |
948 | ||
ee149d03 JB |
949 | if (c == '\n') |
950 | { | |
951 | /* What should col be in this case? | |
952 | * We'll leave it at -1. | |
953 | */ | |
954 | SCM_LINUM (port) -= 1; | |
955 | } | |
956 | else | |
957 | SCM_COL(port) -= 1; | |
958 | } | |
959 | ||
960 | ||
961 | void | |
70d63753 | 962 | scm_ungets (const char *s, int n, SCM port) |
ee149d03 JB |
963 | { |
964 | /* This is simple minded and inefficient, but unreading strings is | |
965 | * probably not a common operation, and remember that line and | |
966 | * column numbers have to be handled... | |
967 | * | |
968 | * Please feel free to write an optimized version! | |
969 | */ | |
970 | while (n--) | |
971 | scm_ungetc (s[n], port); | |
972 | } | |
973 | ||
974 | ||
3b3b36dd | 975 | SCM_DEFINE (scm_peek_char, "peek-char", 0, 1, 0, |
1bbd0b84 | 976 | (SCM port), |
bfc46627 GB |
977 | "Returns the next character available from @var{port},\n" |
978 | "@emph{without} updating @var{port} to point to the following\n" | |
979 | "character. If no more characters are available, an end-of-file object\n" | |
980 | "is returned.@footnote{The value returned by a call to @code{peek-char}\n" | |
981 | "is the same as the value that would have been returned by a call to\n" | |
982 | "@code{read-char} on the same port. The only difference is that the very\n" | |
983 | "next call to @code{read-char} or @code{peek-char} on that\n" | |
984 | "@var{port} will return the value returned by the preceding call to\n" | |
985 | "@code{peek-char}. In particular, a call to @code{peek-char} on an\n" | |
986 | "interactive port will hang waiting for input whenever a call to\n" | |
987 | "@code{read-char} would have hung.}") | |
1bbd0b84 | 988 | #define FUNC_NAME s_scm_peek_char |
ee149d03 JB |
989 | { |
990 | int c; | |
991 | if (SCM_UNBNDP (port)) | |
992 | port = scm_cur_inp; | |
993 | else | |
3b3b36dd | 994 | SCM_VALIDATE_OPINPORT (1,port); |
ee149d03 JB |
995 | c = scm_getc (port); |
996 | if (EOF == c) | |
997 | return SCM_EOF_VAL; | |
998 | scm_ungetc (c, port); | |
999 | return SCM_MAKICHR (c); | |
3cb988bd | 1000 | } |
1bbd0b84 | 1001 | #undef FUNC_NAME |
3cb988bd | 1002 | |
a1ec6916 | 1003 | SCM_DEFINE (scm_unread_char, "unread-char", 2, 0, 0, |
1bbd0b84 | 1004 | (SCM cobj, SCM port), |
b380b885 MD |
1005 | "Place @var{char} in @var{port} so that it will be read by the\n" |
1006 | "next read operation. If called multiple times, the unread characters\n" | |
1007 | "will be read again in last-in first-out order. If @var{port} is\n" | |
1008 | "not supplied, the current input port is used.") | |
1bbd0b84 | 1009 | #define FUNC_NAME s_scm_unread_char |
0f2d19dd JB |
1010 | { |
1011 | int c; | |
1012 | ||
9a8351bc | 1013 | SCM_VALIDATE_ICHR (1,cobj); |
0f2d19dd JB |
1014 | if (SCM_UNBNDP (port)) |
1015 | port = scm_cur_inp; | |
1016 | else | |
3b3b36dd | 1017 | SCM_VALIDATE_OPINPORT (2,port); |
0f2d19dd JB |
1018 | |
1019 | c = SCM_ICHR (cobj); | |
1020 | ||
b7f3516f | 1021 | scm_ungetc (c, port); |
0f2d19dd JB |
1022 | return cobj; |
1023 | } | |
1bbd0b84 | 1024 | #undef FUNC_NAME |
0f2d19dd | 1025 | |
a1ec6916 | 1026 | SCM_DEFINE (scm_unread_string, "unread-string", 2, 0, 0, |
1bbd0b84 | 1027 | (SCM str, SCM port), |
b380b885 MD |
1028 | "Place the string @var{str} in @var{port} so that its characters will be\n" |
1029 | "read in subsequent read operations. If called multiple times, the\n" | |
1030 | "unread characters will be read again in last-in first-out order. If\n" | |
1031 | "@var{port} is not supplied, the current-input-port is used.") | |
1bbd0b84 | 1032 | #define FUNC_NAME s_scm_unread_string |
ee1e7e13 | 1033 | { |
3b3b36dd | 1034 | SCM_VALIDATE_STRING (1,str); |
ee1e7e13 MD |
1035 | if (SCM_UNBNDP (port)) |
1036 | port = scm_cur_inp; | |
1037 | else | |
3b3b36dd | 1038 | SCM_VALIDATE_OPINPORT (2,port); |
ee1e7e13 | 1039 | |
d1c90db5 | 1040 | scm_ungets (SCM_ROUCHARS (str), SCM_LENGTH (str), port); |
ee1e7e13 MD |
1041 | |
1042 | return str; | |
1043 | } | |
1bbd0b84 | 1044 | #undef FUNC_NAME |
ee1e7e13 | 1045 | |
a1ec6916 | 1046 | SCM_DEFINE (scm_seek, "seek", 3, 0, 0, |
1bbd0b84 | 1047 | (SCM object, SCM offset, SCM whence), |
b380b885 MD |
1048 | "Sets the current position of @var{fd/port} to the integer @var{offset},\n" |
1049 | "which is interpreted according to the value of @var{whence}.\n\n" | |
1050 | "One of the following variables should be supplied\n" | |
1051 | "for @var{whence}:\n" | |
1052 | "@defvar SEEK_SET\n" | |
1053 | "Seek from the beginning of the file.\n" | |
1054 | "@end defvar\n" | |
1055 | "@defvar SEEK_CUR\n" | |
1056 | "Seek from the current position.\n" | |
1057 | "@end defvar\n" | |
1058 | "@defvar SEEK_END\n" | |
1059 | "Seek from the end of the file.\n" | |
1060 | "@end defvar\n\n" | |
1061 | "If @var{fd/port} is a file descriptor, the underlying system call is\n" | |
1062 | "@code{lseek}. @var{port} may be a string port.\n\n" | |
1063 | "The value returned is the new position in the file. This means that\n" | |
1064 | "the current position of a port can be obtained using:\n" | |
1065 | "@smalllisp\n" | |
1066 | "(seek port 0 SEEK_CUR)\n" | |
1067 | "@end smalllisp") | |
1bbd0b84 | 1068 | #define FUNC_NAME s_scm_seek |
840ae05d JB |
1069 | { |
1070 | off_t off; | |
1071 | off_t rv; | |
1072 | int how; | |
1073 | ||
1074 | object = SCM_COERCE_OUTPORT (object); | |
1075 | ||
1bbd0b84 | 1076 | off = SCM_NUM2LONG (2,offset); |
3b3b36dd | 1077 | SCM_VALIDATE_INUM_COPY (3,whence,how); |
840ae05d | 1078 | if (how != SEEK_SET && how != SEEK_CUR && how != SEEK_END) |
1bbd0b84 | 1079 | SCM_OUT_OF_RANGE (3, whence); |
0c95b57d | 1080 | if (SCM_OPPORTP (object)) |
840ae05d | 1081 | { |
f12733c9 | 1082 | scm_ptob_descriptor *ptob = scm_ptobs + SCM_PTOBNUM (object); |
840ae05d JB |
1083 | |
1084 | if (!ptob->seek) | |
1bbd0b84 GB |
1085 | SCM_MISC_ERROR ("port is not seekable", |
1086 | scm_cons (object, SCM_EOL)); | |
840ae05d | 1087 | else |
7dcb364d | 1088 | rv = ptob->seek (object, off, how); |
840ae05d JB |
1089 | } |
1090 | else /* file descriptor?. */ | |
1091 | { | |
3b3b36dd | 1092 | SCM_VALIDATE_INUM (1,object); |
840ae05d JB |
1093 | rv = lseek (SCM_INUM (object), off, how); |
1094 | if (rv == -1) | |
1bbd0b84 | 1095 | SCM_SYSERROR; |
840ae05d JB |
1096 | } |
1097 | return scm_long2num (rv); | |
1098 | } | |
1bbd0b84 | 1099 | #undef FUNC_NAME |
840ae05d | 1100 | |
a1ec6916 | 1101 | SCM_DEFINE (scm_truncate_file, "truncate-file", 1, 1, 0, |
1bbd0b84 | 1102 | (SCM object, SCM length), |
b380b885 MD |
1103 | "Truncates the object referred to by @var{obj} to at most @var{size} bytes.\n" |
1104 | "@var{obj} can be a string containing a file name or an integer file\n" | |
1105 | "descriptor or a port. @var{size} may be omitted if @var{obj} is not\n" | |
1106 | "a file name, in which case the truncation occurs at the current port.\n" | |
1107 | "position.\n\n" | |
1108 | "The return value is unspecified.") | |
1bbd0b84 | 1109 | #define FUNC_NAME s_scm_truncate_file |
840ae05d | 1110 | { |
69bc9ff3 GH |
1111 | int rv; |
1112 | off_t c_length; | |
1113 | ||
1114 | /* object can be a port, fdes or filename. */ | |
840ae05d | 1115 | |
840ae05d JB |
1116 | if (SCM_UNBNDP (length)) |
1117 | { | |
69bc9ff3 | 1118 | /* must supply length if object is a filename. */ |
0c95b57d | 1119 | if (SCM_ROSTRINGP (object)) |
c1bfcf60 | 1120 | SCM_MISC_ERROR("must supply length if OBJECT is a filename",SCM_EOL); |
69bc9ff3 | 1121 | |
c94577b4 | 1122 | length = scm_seek (object, SCM_INUM0, SCM_MAKINUM (SEEK_CUR)); |
840ae05d | 1123 | } |
1bbd0b84 | 1124 | c_length = SCM_NUM2LONG (2,length); |
69bc9ff3 | 1125 | if (c_length < 0) |
1bbd0b84 | 1126 | SCM_MISC_ERROR ("negative offset", SCM_EOL); |
3fe6190f | 1127 | |
69bc9ff3 GH |
1128 | object = SCM_COERCE_OUTPORT (object); |
1129 | if (SCM_INUMP (object)) | |
1130 | { | |
1131 | SCM_SYSCALL (rv = ftruncate (SCM_INUM (object), c_length)); | |
1132 | } | |
0c95b57d | 1133 | else if (SCM_OPOUTPORTP (object)) |
69bc9ff3 GH |
1134 | { |
1135 | scm_port *pt = SCM_PTAB_ENTRY (object); | |
f12733c9 | 1136 | scm_ptob_descriptor *ptob = scm_ptobs + SCM_PTOBNUM (object); |
69bc9ff3 | 1137 | |
affc96b5 | 1138 | if (!ptob->truncate) |
1bbd0b84 | 1139 | SCM_MISC_ERROR ("port is not truncatable", SCM_EOL); |
69bc9ff3 | 1140 | if (pt->rw_active == SCM_PORT_READ) |
affc96b5 | 1141 | scm_end_input (object); |
69bc9ff3 | 1142 | else if (pt->rw_active == SCM_PORT_WRITE) |
affc96b5 | 1143 | ptob->flush (object); |
69bc9ff3 | 1144 | |
affc96b5 | 1145 | ptob->truncate (object, c_length); |
69bc9ff3 GH |
1146 | rv = 0; |
1147 | } | |
1148 | else | |
1149 | { | |
3b3b36dd | 1150 | SCM_VALIDATE_ROSTRING (1,object); |
69bc9ff3 GH |
1151 | SCM_COERCE_SUBSTR (object); |
1152 | SCM_SYSCALL (rv = truncate (SCM_ROCHARS (object), c_length)); | |
1153 | } | |
1154 | if (rv == -1) | |
1bbd0b84 | 1155 | SCM_SYSERROR; |
840ae05d JB |
1156 | return SCM_UNSPECIFIED; |
1157 | } | |
1bbd0b84 | 1158 | #undef FUNC_NAME |
840ae05d | 1159 | |
a1ec6916 | 1160 | SCM_DEFINE (scm_port_line, "port-line", 1, 0, 0, |
1bbd0b84 | 1161 | (SCM port), |
b450f070 | 1162 | "Return the current line number for PORT.") |
1bbd0b84 | 1163 | #define FUNC_NAME s_scm_port_line |
0f2d19dd | 1164 | { |
78446828 | 1165 | port = SCM_COERCE_OUTPORT (port); |
3b3b36dd | 1166 | SCM_VALIDATE_OPENPORT (1,port); |
360fc44c | 1167 | return SCM_MAKINUM (SCM_LINUM (port)); |
0f2d19dd | 1168 | } |
1bbd0b84 | 1169 | #undef FUNC_NAME |
0f2d19dd | 1170 | |
a1ec6916 | 1171 | SCM_DEFINE (scm_set_port_line_x, "set-port-line!", 2, 0, 0, |
1bbd0b84 | 1172 | (SCM port, SCM line), |
b450f070 | 1173 | "Set the current line number for PORT to LINE.") |
1bbd0b84 | 1174 | #define FUNC_NAME s_scm_set_port_line_x |
d043d8c2 | 1175 | { |
360fc44c | 1176 | port = SCM_COERCE_OUTPORT (port); |
3b3b36dd GB |
1177 | SCM_VALIDATE_OPENPORT (1,port); |
1178 | SCM_VALIDATE_INUM (2,line); | |
d043d8c2 MD |
1179 | return SCM_PTAB_ENTRY (port)->line_number = SCM_INUM (line); |
1180 | } | |
1bbd0b84 | 1181 | #undef FUNC_NAME |
d043d8c2 | 1182 | |
a1ec6916 | 1183 | SCM_DEFINE (scm_port_column, "port-column", 1, 0, 0, |
1bbd0b84 | 1184 | (SCM port), |
b380b885 MD |
1185 | "@deffnx primitive port-line [input-port]\n" |
1186 | "Return the current column number or line number of @var{input-port},\n" | |
1187 | "using the current input port if none is specified. If the number is\n" | |
1188 | "unknown, the result is #f. Otherwise, the result is a 0-origin integer\n" | |
1189 | "- i.e. the first character of the first line is line 0, column 0.\n" | |
1190 | "(However, when you display a file position, for example in an error\n" | |
1191 | "message, we recommand you add 1 to get 1-origin integers. This is\n" | |
1192 | "because lines and column numbers traditionally start with 1, and that is\n" | |
1193 | "what non-programmers will find most natural.)") | |
1bbd0b84 | 1194 | #define FUNC_NAME s_scm_port_column |
0f2d19dd | 1195 | { |
78446828 | 1196 | port = SCM_COERCE_OUTPORT (port); |
3b3b36dd | 1197 | SCM_VALIDATE_OPENPORT (1,port); |
360fc44c | 1198 | return SCM_MAKINUM (SCM_COL (port)); |
0f2d19dd | 1199 | } |
1bbd0b84 | 1200 | #undef FUNC_NAME |
0f2d19dd | 1201 | |
a1ec6916 | 1202 | SCM_DEFINE (scm_set_port_column_x, "set-port-column!", 2, 0, 0, |
1bbd0b84 | 1203 | (SCM port, SCM column), |
b380b885 MD |
1204 | "@deffnx primitive set-port-line! [input-port] line\n" |
1205 | "Set the current column or line number of @var{input-port}, using the\n" | |
1206 | "current input port if none is specified.") | |
1bbd0b84 | 1207 | #define FUNC_NAME s_scm_set_port_column_x |
d043d8c2 | 1208 | { |
360fc44c | 1209 | port = SCM_COERCE_OUTPORT (port); |
3b3b36dd GB |
1210 | SCM_VALIDATE_OPENPORT (1,port); |
1211 | SCM_VALIDATE_INUM (2,column); | |
d043d8c2 MD |
1212 | return SCM_PTAB_ENTRY (port)->column_number = SCM_INUM (column); |
1213 | } | |
1bbd0b84 | 1214 | #undef FUNC_NAME |
d043d8c2 | 1215 | |
a1ec6916 | 1216 | SCM_DEFINE (scm_port_filename, "port-filename", 1, 0, 0, |
1bbd0b84 | 1217 | (SCM port), |
b380b885 | 1218 | "Return the filename associated with @var{port}. This function returns\n" |
a3c8b9fc MD |
1219 | "the strings \"standard input\", \"standard output\" and \"standard error\"" |
1220 | "when called on the current input, output and error ports respectively.") | |
1bbd0b84 | 1221 | #define FUNC_NAME s_scm_port_filename |
0f2d19dd | 1222 | { |
78446828 | 1223 | port = SCM_COERCE_OUTPORT (port); |
3b3b36dd | 1224 | SCM_VALIDATE_OPENPORT (1,port); |
360fc44c | 1225 | return SCM_PTAB_ENTRY (port)->file_name; |
0f2d19dd | 1226 | } |
1bbd0b84 | 1227 | #undef FUNC_NAME |
0f2d19dd | 1228 | |
a1ec6916 | 1229 | SCM_DEFINE (scm_set_port_filename_x, "set-port-filename!", 2, 0, 0, |
1bbd0b84 | 1230 | (SCM port, SCM filename), |
b380b885 MD |
1231 | "Change the filename associated with @var{port}, using the current input\n" |
1232 | "port if none is specified. Note that this does not change the port's\n" | |
1233 | "source of data, but only the value that is returned by\n" | |
1234 | "@code{port-filename} and reported in diagnostic output.") | |
1bbd0b84 | 1235 | #define FUNC_NAME s_scm_set_port_filename_x |
d14af9f2 | 1236 | { |
360fc44c | 1237 | port = SCM_COERCE_OUTPORT (port); |
3b3b36dd | 1238 | SCM_VALIDATE_OPENPORT (1,port); |
360fc44c | 1239 | /* We allow the user to set the filename to whatever he likes. */ |
d14af9f2 MD |
1240 | return SCM_PTAB_ENTRY (port)->file_name = filename; |
1241 | } | |
1bbd0b84 | 1242 | #undef FUNC_NAME |
d14af9f2 | 1243 | |
0f2d19dd JB |
1244 | #ifndef ttyname |
1245 | extern char * ttyname(); | |
1246 | #endif | |
1247 | ||
f12733c9 MD |
1248 | void |
1249 | scm_print_port_mode (SCM exp, SCM port) | |
1250 | { | |
1251 | scm_puts (SCM_CLOSEDP (exp) | |
1252 | ? "closed: " | |
1253 | : (SCM_RDNG & SCM_CAR (exp) | |
1254 | ? (SCM_WRTNG & SCM_CAR (exp) | |
1255 | ? "input-output: " | |
1256 | : "input: ") | |
1257 | : (SCM_WRTNG & SCM_CAR (exp) | |
1258 | ? "output: " | |
1259 | : "bogus: ")), | |
1260 | port); | |
1261 | } | |
1cc91f1b | 1262 | |
f12733c9 MD |
1263 | int |
1264 | scm_port_print (SCM exp, SCM port, scm_print_state *pstate) | |
0f2d19dd | 1265 | { |
f12733c9 MD |
1266 | char *type = SCM_PTOBNAME (SCM_PTOBNUM (exp)); |
1267 | if (!type) | |
1268 | type = "port"; | |
b7f3516f | 1269 | scm_puts ("#<", port); |
f12733c9 | 1270 | scm_print_port_mode (exp, port); |
b7f3516f TT |
1271 | scm_puts (type, port); |
1272 | scm_putc (' ', port); | |
f12733c9 | 1273 | scm_intprint (SCM_CDR (exp), 16, port); |
b7f3516f | 1274 | scm_putc ('>', port); |
f12733c9 | 1275 | return 1; |
0f2d19dd JB |
1276 | } |
1277 | ||
f12733c9 MD |
1278 | extern void scm_make_fptob (); |
1279 | extern void scm_make_stptob (); | |
1280 | extern void scm_make_sfptob (); | |
1cc91f1b | 1281 | |
0f2d19dd JB |
1282 | void |
1283 | scm_ports_prehistory () | |
0f2d19dd JB |
1284 | { |
1285 | scm_numptob = 0; | |
f12733c9 | 1286 | scm_ptobs = (scm_ptob_descriptor *) malloc (sizeof (scm_ptob_descriptor)); |
0f2d19dd JB |
1287 | |
1288 | /* WARNING: These scm_newptob calls must be done in this order. | |
1289 | * They must agree with the port declarations in tags.h. | |
1290 | */ | |
f12733c9 MD |
1291 | /* scm_tc16_fport = */ scm_make_fptob (); |
1292 | /* scm_tc16_pipe was here */ scm_make_fptob (); /* dummy. */ | |
1293 | /* scm_tc16_strport = */ scm_make_stptob (); | |
1294 | /* scm_tc16_sfport = */ scm_make_sfptob (); | |
0f2d19dd | 1295 | } |
0f2d19dd JB |
1296 | |
1297 | \f | |
ee149d03 | 1298 | |
d68fee48 | 1299 | /* Void ports. */ |
0f2d19dd | 1300 | |
f12733c9 | 1301 | long scm_tc16_void_port = 0; |
0f2d19dd | 1302 | |
ee149d03 | 1303 | static void |
0f88a8f3 | 1304 | flush_void_port (SCM port) |
0f2d19dd | 1305 | { |
3cb988bd | 1306 | } |
1cc91f1b | 1307 | |
283a1a0e | 1308 | static void |
affc96b5 | 1309 | end_input_void_port (SCM port, int offset) |
283a1a0e GH |
1310 | { |
1311 | } | |
1312 | ||
31703ab8 | 1313 | static void |
8aa011a1 | 1314 | write_void_port (SCM port, const void *data, size_t size) |
31703ab8 GH |
1315 | { |
1316 | } | |
1317 | ||
0f2d19dd | 1318 | SCM |
a284e297 | 1319 | scm_void_port (char *mode_str) |
0f2d19dd JB |
1320 | { |
1321 | int mode_bits; | |
1322 | SCM answer; | |
840ae05d | 1323 | scm_port * pt; |
0f2d19dd JB |
1324 | |
1325 | SCM_NEWCELL (answer); | |
1326 | SCM_DEFER_INTS; | |
1327 | mode_bits = scm_mode_bits (mode_str); | |
1328 | pt = scm_add_to_port_table (answer); | |
0f2d19dd | 1329 | SCM_SETPTAB_ENTRY (answer, pt); |
ee149d03 JB |
1330 | SCM_SETSTREAM (answer, 0); |
1331 | SCM_SETCAR (answer, scm_tc16_void_port | mode_bits); | |
0f2d19dd JB |
1332 | SCM_ALLOW_INTS; |
1333 | return answer; | |
1334 | } | |
1335 | ||
1336 | ||
a1ec6916 | 1337 | SCM_DEFINE (scm_sys_make_void_port, "%make-void-port", 1, 0, 0, |
1bbd0b84 | 1338 | (SCM mode), |
b380b885 MD |
1339 | "Create and return a new void port. The @var{mode} argument describes\n" |
1340 | "the input/output modes for this port; for a description, see the\n" | |
1341 | "documentation for @code{open-file} in @ref{File Ports}.") | |
1bbd0b84 | 1342 | #define FUNC_NAME s_scm_sys_make_void_port |
0f2d19dd | 1343 | { |
3b3b36dd | 1344 | SCM_VALIDATE_ROSTRING (1,mode); |
89958ad0 | 1345 | SCM_COERCE_SUBSTR (mode); |
0f2d19dd JB |
1346 | return scm_void_port (SCM_ROCHARS (mode)); |
1347 | } | |
1bbd0b84 | 1348 | #undef FUNC_NAME |
0f2d19dd | 1349 | |
0f2d19dd | 1350 | \f |
89545eba | 1351 | /* Initialization. */ |
1cc91f1b | 1352 | |
0f2d19dd JB |
1353 | void |
1354 | scm_init_ports () | |
0f2d19dd | 1355 | { |
840ae05d JB |
1356 | /* lseek() symbols. */ |
1357 | scm_sysintern ("SEEK_SET", SCM_MAKINUM (SEEK_SET)); | |
1358 | scm_sysintern ("SEEK_CUR", SCM_MAKINUM (SEEK_CUR)); | |
1359 | scm_sysintern ("SEEK_END", SCM_MAKINUM (SEEK_END)); | |
1360 | ||
affc96b5 | 1361 | scm_tc16_void_port = scm_make_port_type ("void", 0, write_void_port); |
0f2d19dd JB |
1362 | #include "ports.x" |
1363 | } |