Commit | Line | Data |
---|---|---|
d9fcf2fb | 1 | /* UI_FILE - a generic STDIO like output stream. |
349c5d5f | 2 | |
8acc9f48 | 3 | Copyright (C) 1999-2013 Free Software Foundation, Inc. |
d9fcf2fb JM |
4 | |
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
d9fcf2fb JM |
10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
d9fcf2fb | 19 | |
581e13c1 | 20 | /* Implement the ``struct ui_file'' object. */ |
d9fcf2fb JM |
21 | |
22 | #include "defs.h" | |
23 | #include "ui-file.h" | |
94af9270 | 24 | #include "gdb_obstack.h" |
1d1358b6 | 25 | #include "gdb_string.h" |
ad960ed2 | 26 | #include "gdb_select.h" |
d9fcf2fb | 27 | |
449092f6 CV |
28 | #include <errno.h> |
29 | ||
d9fcf2fb JM |
30 | static ui_file_isatty_ftype null_file_isatty; |
31 | static ui_file_write_ftype null_file_write; | |
01124a23 | 32 | static ui_file_write_ftype null_file_write_async_safe; |
d9fcf2fb | 33 | static ui_file_fputs_ftype null_file_fputs; |
449092f6 | 34 | static ui_file_read_ftype null_file_read; |
d9fcf2fb JM |
35 | static ui_file_flush_ftype null_file_flush; |
36 | static ui_file_delete_ftype null_file_delete; | |
37 | static ui_file_rewind_ftype null_file_rewind; | |
38 | static ui_file_put_ftype null_file_put; | |
2a9d5ccf | 39 | static ui_file_fseek_ftype null_file_fseek; |
d9fcf2fb JM |
40 | |
41 | struct ui_file | |
42 | { | |
43 | int *magic; | |
44 | ui_file_flush_ftype *to_flush; | |
45 | ui_file_write_ftype *to_write; | |
01124a23 | 46 | ui_file_write_async_safe_ftype *to_write_async_safe; |
d9fcf2fb | 47 | ui_file_fputs_ftype *to_fputs; |
449092f6 | 48 | ui_file_read_ftype *to_read; |
d9fcf2fb JM |
49 | ui_file_delete_ftype *to_delete; |
50 | ui_file_isatty_ftype *to_isatty; | |
51 | ui_file_rewind_ftype *to_rewind; | |
52 | ui_file_put_ftype *to_put; | |
2a9d5ccf | 53 | ui_file_fseek_ftype *to_fseek; |
d9fcf2fb JM |
54 | void *to_data; |
55 | }; | |
56 | int ui_file_magic; | |
57 | ||
58 | struct ui_file * | |
fba45db2 | 59 | ui_file_new (void) |
d9fcf2fb JM |
60 | { |
61 | struct ui_file *file = xmalloc (sizeof (struct ui_file)); | |
5d502164 | 62 | |
d9fcf2fb JM |
63 | file->magic = &ui_file_magic; |
64 | set_ui_file_data (file, NULL, null_file_delete); | |
65 | set_ui_file_flush (file, null_file_flush); | |
66 | set_ui_file_write (file, null_file_write); | |
01124a23 | 67 | set_ui_file_write_async_safe (file, null_file_write_async_safe); |
d9fcf2fb | 68 | set_ui_file_fputs (file, null_file_fputs); |
449092f6 | 69 | set_ui_file_read (file, null_file_read); |
d9fcf2fb JM |
70 | set_ui_file_isatty (file, null_file_isatty); |
71 | set_ui_file_rewind (file, null_file_rewind); | |
72 | set_ui_file_put (file, null_file_put); | |
2a9d5ccf | 73 | set_ui_file_fseek (file, null_file_fseek); |
d9fcf2fb JM |
74 | return file; |
75 | } | |
76 | ||
77 | void | |
fba45db2 | 78 | ui_file_delete (struct ui_file *file) |
d9fcf2fb JM |
79 | { |
80 | file->to_delete (file); | |
b8c9b27d | 81 | xfree (file); |
d9fcf2fb JM |
82 | } |
83 | ||
84 | static int | |
fba45db2 | 85 | null_file_isatty (struct ui_file *file) |
d9fcf2fb JM |
86 | { |
87 | return 0; | |
88 | } | |
89 | ||
90 | static void | |
fba45db2 | 91 | null_file_rewind (struct ui_file *file) |
d9fcf2fb JM |
92 | { |
93 | return; | |
94 | } | |
95 | ||
96 | static void | |
97 | null_file_put (struct ui_file *file, | |
98 | ui_file_put_method_ftype *write, | |
99 | void *dest) | |
100 | { | |
101 | return; | |
102 | } | |
103 | ||
104 | static void | |
fba45db2 | 105 | null_file_flush (struct ui_file *file) |
d9fcf2fb JM |
106 | { |
107 | return; | |
108 | } | |
109 | ||
110 | static void | |
111 | null_file_write (struct ui_file *file, | |
112 | const char *buf, | |
113 | long sizeof_buf) | |
114 | { | |
115 | if (file->to_fputs == null_file_fputs) | |
581e13c1 MS |
116 | /* Both the write and fputs methods are null. Discard the |
117 | request. */ | |
d9fcf2fb JM |
118 | return; |
119 | else | |
120 | { | |
121 | /* The fputs method isn't null, slowly pass the write request | |
122 | onto that. FYI, this isn't as bad as it may look - the | |
123 | current (as of 1999-11-07) printf_* function calls fputc and | |
124 | fputc does exactly the below. By having a write function it | |
125 | is possible to clean up that code. */ | |
126 | int i; | |
127 | char b[2]; | |
5d502164 | 128 | |
d9fcf2fb JM |
129 | b[1] = '\0'; |
130 | for (i = 0; i < sizeof_buf; i++) | |
131 | { | |
132 | b[0] = buf[i]; | |
133 | file->to_fputs (b, file); | |
134 | } | |
135 | return; | |
136 | } | |
137 | } | |
138 | ||
449092f6 CV |
139 | static long |
140 | null_file_read (struct ui_file *file, | |
141 | char *buf, | |
142 | long sizeof_buf) | |
143 | { | |
144 | errno = EBADF; | |
145 | return 0; | |
146 | } | |
147 | ||
d9fcf2fb | 148 | static void |
fba45db2 | 149 | null_file_fputs (const char *buf, struct ui_file *file) |
d9fcf2fb JM |
150 | { |
151 | if (file->to_write == null_file_write) | |
581e13c1 MS |
152 | /* Both the write and fputs methods are null. Discard the |
153 | request. */ | |
d9fcf2fb JM |
154 | return; |
155 | else | |
156 | { | |
581e13c1 | 157 | /* The write method was implemented, use that. */ |
d9fcf2fb JM |
158 | file->to_write (file, buf, strlen (buf)); |
159 | } | |
160 | } | |
161 | ||
01124a23 DE |
162 | static void |
163 | null_file_write_async_safe (struct ui_file *file, | |
164 | const char *buf, | |
165 | long sizeof_buf) | |
166 | { | |
167 | return; | |
168 | } | |
169 | ||
d9fcf2fb | 170 | static void |
fba45db2 | 171 | null_file_delete (struct ui_file *file) |
d9fcf2fb JM |
172 | { |
173 | return; | |
174 | } | |
175 | ||
2a9d5ccf HZ |
176 | static int |
177 | null_file_fseek (struct ui_file *stream, long offset, int whence) | |
178 | { | |
179 | errno = EBADF; | |
180 | ||
181 | return -1; | |
182 | } | |
183 | ||
d9fcf2fb | 184 | void * |
fba45db2 | 185 | ui_file_data (struct ui_file *file) |
d9fcf2fb JM |
186 | { |
187 | if (file->magic != &ui_file_magic) | |
8e65ff28 | 188 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 189 | _("ui_file_data: bad magic number")); |
d9fcf2fb JM |
190 | return file->to_data; |
191 | } | |
192 | ||
193 | void | |
fba45db2 | 194 | gdb_flush (struct ui_file *file) |
d9fcf2fb JM |
195 | { |
196 | file->to_flush (file); | |
197 | } | |
198 | ||
199 | int | |
fba45db2 | 200 | ui_file_isatty (struct ui_file *file) |
d9fcf2fb JM |
201 | { |
202 | return file->to_isatty (file); | |
203 | } | |
204 | ||
205 | void | |
fba45db2 | 206 | ui_file_rewind (struct ui_file *file) |
d9fcf2fb JM |
207 | { |
208 | file->to_rewind (file); | |
209 | } | |
210 | ||
211 | void | |
212 | ui_file_put (struct ui_file *file, | |
213 | ui_file_put_method_ftype *write, | |
214 | void *dest) | |
215 | { | |
216 | file->to_put (file, write, dest); | |
217 | } | |
218 | ||
219 | void | |
220 | ui_file_write (struct ui_file *file, | |
221 | const char *buf, | |
222 | long length_buf) | |
223 | { | |
224 | file->to_write (file, buf, length_buf); | |
225 | } | |
226 | ||
01124a23 DE |
227 | void |
228 | ui_file_write_async_safe (struct ui_file *file, | |
229 | const char *buf, | |
230 | long length_buf) | |
231 | { | |
232 | file->to_write_async_safe (file, buf, length_buf); | |
233 | } | |
234 | ||
449092f6 CV |
235 | long |
236 | ui_file_read (struct ui_file *file, char *buf, long length_buf) | |
237 | { | |
238 | return file->to_read (file, buf, length_buf); | |
239 | } | |
240 | ||
2a9d5ccf HZ |
241 | int |
242 | ui_file_fseek (struct ui_file *file, long offset, int whence) | |
243 | { | |
244 | return file->to_fseek (file, offset, whence); | |
245 | } | |
246 | ||
d9fcf2fb | 247 | void |
fba45db2 | 248 | fputs_unfiltered (const char *buf, struct ui_file *file) |
d9fcf2fb JM |
249 | { |
250 | file->to_fputs (buf, file); | |
251 | } | |
252 | ||
253 | void | |
3f453875 | 254 | set_ui_file_flush (struct ui_file *file, ui_file_flush_ftype *flush_ptr) |
d9fcf2fb | 255 | { |
3f453875 | 256 | file->to_flush = flush_ptr; |
d9fcf2fb JM |
257 | } |
258 | ||
259 | void | |
3f453875 | 260 | set_ui_file_isatty (struct ui_file *file, ui_file_isatty_ftype *isatty_ptr) |
d9fcf2fb | 261 | { |
3f453875 | 262 | file->to_isatty = isatty_ptr; |
d9fcf2fb JM |
263 | } |
264 | ||
265 | void | |
3f453875 | 266 | set_ui_file_rewind (struct ui_file *file, ui_file_rewind_ftype *rewind_ptr) |
d9fcf2fb | 267 | { |
3f453875 | 268 | file->to_rewind = rewind_ptr; |
d9fcf2fb JM |
269 | } |
270 | ||
271 | void | |
3f453875 | 272 | set_ui_file_put (struct ui_file *file, ui_file_put_ftype *put_ptr) |
d9fcf2fb | 273 | { |
3f453875 | 274 | file->to_put = put_ptr; |
d9fcf2fb JM |
275 | } |
276 | ||
277 | void | |
278 | set_ui_file_write (struct ui_file *file, | |
3f453875 | 279 | ui_file_write_ftype *write_ptr) |
d9fcf2fb | 280 | { |
3f453875 | 281 | file->to_write = write_ptr; |
d9fcf2fb JM |
282 | } |
283 | ||
01124a23 DE |
284 | void |
285 | set_ui_file_write_async_safe (struct ui_file *file, | |
3f453875 | 286 | ui_file_write_async_safe_ftype *write_async_safe_ptr) |
01124a23 | 287 | { |
3f453875 | 288 | file->to_write_async_safe = write_async_safe_ptr; |
01124a23 DE |
289 | } |
290 | ||
449092f6 | 291 | void |
3f453875 | 292 | set_ui_file_read (struct ui_file *file, ui_file_read_ftype *read_ptr) |
449092f6 | 293 | { |
3f453875 | 294 | file->to_read = read_ptr; |
449092f6 CV |
295 | } |
296 | ||
d9fcf2fb | 297 | void |
3f453875 | 298 | set_ui_file_fputs (struct ui_file *file, ui_file_fputs_ftype *fputs_ptr) |
d9fcf2fb | 299 | { |
3f453875 | 300 | file->to_fputs = fputs_ptr; |
d9fcf2fb JM |
301 | } |
302 | ||
2a9d5ccf HZ |
303 | void |
304 | set_ui_file_fseek (struct ui_file *file, ui_file_fseek_ftype *fseek_ptr) | |
305 | { | |
306 | file->to_fseek = fseek_ptr; | |
307 | } | |
308 | ||
d9fcf2fb | 309 | void |
fba45db2 | 310 | set_ui_file_data (struct ui_file *file, void *data, |
3f453875 | 311 | ui_file_delete_ftype *delete_ptr) |
d9fcf2fb JM |
312 | { |
313 | file->to_data = data; | |
3f453875 | 314 | file->to_delete = delete_ptr; |
d9fcf2fb JM |
315 | } |
316 | ||
317 | /* ui_file utility function for converting a ``struct ui_file'' into | |
581e13c1 | 318 | a memory buffer. */ |
d9fcf2fb JM |
319 | |
320 | struct accumulated_ui_file | |
321 | { | |
322 | char *buffer; | |
323 | long length; | |
324 | }; | |
325 | ||
326 | static void | |
327 | do_ui_file_xstrdup (void *context, const char *buffer, long length) | |
328 | { | |
329 | struct accumulated_ui_file *acc = context; | |
5d502164 | 330 | |
d9fcf2fb JM |
331 | if (acc->buffer == NULL) |
332 | acc->buffer = xmalloc (length + 1); | |
333 | else | |
334 | acc->buffer = xrealloc (acc->buffer, acc->length + length + 1); | |
335 | memcpy (acc->buffer + acc->length, buffer, length); | |
336 | acc->length += length; | |
337 | acc->buffer[acc->length] = '\0'; | |
338 | } | |
339 | ||
340 | char * | |
759ef836 | 341 | ui_file_xstrdup (struct ui_file *file, long *length) |
d9fcf2fb JM |
342 | { |
343 | struct accumulated_ui_file acc; | |
5d502164 | 344 | |
d9fcf2fb JM |
345 | acc.buffer = NULL; |
346 | acc.length = 0; | |
347 | ui_file_put (file, do_ui_file_xstrdup, &acc); | |
348 | if (acc.buffer == NULL) | |
349 | acc.buffer = xstrdup (""); | |
759ef836 PA |
350 | if (length != NULL) |
351 | *length = acc.length; | |
d9fcf2fb JM |
352 | return acc.buffer; |
353 | } | |
94af9270 KS |
354 | |
355 | static void | |
356 | do_ui_file_obsavestring (void *context, const char *buffer, long length) | |
357 | { | |
358 | struct obstack *obstack = (struct obstack *) context; | |
5d502164 | 359 | |
94af9270 KS |
360 | obstack_grow (obstack, buffer, length); |
361 | } | |
362 | ||
363 | char * | |
364 | ui_file_obsavestring (struct ui_file *file, struct obstack *obstack, | |
365 | long *length) | |
366 | { | |
367 | ui_file_put (file, do_ui_file_obsavestring, obstack); | |
368 | *length = obstack_object_size (obstack); | |
369 | obstack_1grow (obstack, '\0'); | |
370 | return obstack_finish (obstack); | |
371 | } | |
d9fcf2fb JM |
372 | \f |
373 | /* A pure memory based ``struct ui_file'' that can be used an output | |
581e13c1 MS |
374 | buffer. The buffers accumulated contents are available via |
375 | ui_file_put(). */ | |
d9fcf2fb JM |
376 | |
377 | struct mem_file | |
378 | { | |
379 | int *magic; | |
380 | char *buffer; | |
381 | int sizeof_buffer; | |
382 | int length_buffer; | |
383 | }; | |
384 | ||
385 | static ui_file_rewind_ftype mem_file_rewind; | |
386 | static ui_file_put_ftype mem_file_put; | |
387 | static ui_file_write_ftype mem_file_write; | |
388 | static ui_file_delete_ftype mem_file_delete; | |
a14ed312 | 389 | static struct ui_file *mem_file_new (void); |
d9fcf2fb JM |
390 | static int mem_file_magic; |
391 | ||
392 | static struct ui_file * | |
393 | mem_file_new (void) | |
394 | { | |
395 | struct mem_file *stream = XMALLOC (struct mem_file); | |
396 | struct ui_file *file = ui_file_new (); | |
5d502164 | 397 | |
d9fcf2fb JM |
398 | set_ui_file_data (file, stream, mem_file_delete); |
399 | set_ui_file_rewind (file, mem_file_rewind); | |
400 | set_ui_file_put (file, mem_file_put); | |
401 | set_ui_file_write (file, mem_file_write); | |
402 | stream->magic = &mem_file_magic; | |
403 | stream->buffer = NULL; | |
404 | stream->sizeof_buffer = 0; | |
405 | stream->length_buffer = 0; | |
406 | return file; | |
407 | } | |
408 | ||
409 | static void | |
410 | mem_file_delete (struct ui_file *file) | |
411 | { | |
412 | struct mem_file *stream = ui_file_data (file); | |
5d502164 | 413 | |
d9fcf2fb | 414 | if (stream->magic != &mem_file_magic) |
8e65ff28 | 415 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 416 | _("mem_file_delete: bad magic number")); |
d9fcf2fb | 417 | if (stream->buffer != NULL) |
b8c9b27d KB |
418 | xfree (stream->buffer); |
419 | xfree (stream); | |
d9fcf2fb JM |
420 | } |
421 | ||
422 | struct ui_file * | |
423 | mem_fileopen (void) | |
424 | { | |
425 | return mem_file_new (); | |
426 | } | |
427 | ||
428 | static void | |
429 | mem_file_rewind (struct ui_file *file) | |
430 | { | |
431 | struct mem_file *stream = ui_file_data (file); | |
5d502164 | 432 | |
d9fcf2fb | 433 | if (stream->magic != &mem_file_magic) |
8e65ff28 | 434 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 435 | _("mem_file_rewind: bad magic number")); |
d9fcf2fb JM |
436 | stream->length_buffer = 0; |
437 | } | |
438 | ||
439 | static void | |
440 | mem_file_put (struct ui_file *file, | |
441 | ui_file_put_method_ftype *write, | |
442 | void *dest) | |
443 | { | |
444 | struct mem_file *stream = ui_file_data (file); | |
5d502164 | 445 | |
d9fcf2fb | 446 | if (stream->magic != &mem_file_magic) |
8e65ff28 | 447 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 448 | _("mem_file_put: bad magic number")); |
d9fcf2fb JM |
449 | if (stream->length_buffer > 0) |
450 | write (dest, stream->buffer, stream->length_buffer); | |
451 | } | |
452 | ||
453 | void | |
454 | mem_file_write (struct ui_file *file, | |
455 | const char *buffer, | |
456 | long length_buffer) | |
457 | { | |
458 | struct mem_file *stream = ui_file_data (file); | |
5d502164 | 459 | |
d9fcf2fb | 460 | if (stream->magic != &mem_file_magic) |
8e65ff28 | 461 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 462 | _("mem_file_write: bad magic number")); |
d9fcf2fb JM |
463 | if (stream->buffer == NULL) |
464 | { | |
465 | stream->length_buffer = length_buffer; | |
466 | stream->sizeof_buffer = length_buffer; | |
467 | stream->buffer = xmalloc (stream->sizeof_buffer); | |
468 | memcpy (stream->buffer, buffer, length_buffer); | |
469 | } | |
470 | else | |
471 | { | |
472 | int new_length = stream->length_buffer + length_buffer; | |
5d502164 | 473 | |
d9fcf2fb JM |
474 | if (new_length >= stream->sizeof_buffer) |
475 | { | |
476 | stream->sizeof_buffer = new_length; | |
477 | stream->buffer = xrealloc (stream->buffer, stream->sizeof_buffer); | |
478 | } | |
479 | memcpy (stream->buffer + stream->length_buffer, buffer, length_buffer); | |
480 | stream->length_buffer = new_length; | |
481 | } | |
482 | } | |
483 | \f | |
484 | /* ``struct ui_file'' implementation that maps directly onto | |
581e13c1 | 485 | <stdio.h>'s FILE. */ |
d9fcf2fb JM |
486 | |
487 | static ui_file_write_ftype stdio_file_write; | |
01124a23 | 488 | static ui_file_write_async_safe_ftype stdio_file_write_async_safe; |
d9fcf2fb | 489 | static ui_file_fputs_ftype stdio_file_fputs; |
449092f6 | 490 | static ui_file_read_ftype stdio_file_read; |
d9fcf2fb JM |
491 | static ui_file_isatty_ftype stdio_file_isatty; |
492 | static ui_file_delete_ftype stdio_file_delete; | |
3e43a32a | 493 | static struct ui_file *stdio_file_new (FILE *file, int close_p); |
d9fcf2fb | 494 | static ui_file_flush_ftype stdio_file_flush; |
2a9d5ccf | 495 | static ui_file_fseek_ftype stdio_file_fseek; |
d9fcf2fb JM |
496 | |
497 | static int stdio_file_magic; | |
498 | ||
499 | struct stdio_file | |
500 | { | |
501 | int *magic; | |
502 | FILE *file; | |
01124a23 DE |
503 | /* The associated file descriptor is extracted ahead of time for |
504 | stdio_file_write_async_safe's benefit, in case fileno isn't async-safe. */ | |
505 | int fd; | |
d9fcf2fb JM |
506 | int close_p; |
507 | }; | |
508 | ||
509 | static struct ui_file * | |
fba45db2 | 510 | stdio_file_new (FILE *file, int close_p) |
d9fcf2fb JM |
511 | { |
512 | struct ui_file *ui_file = ui_file_new (); | |
513 | struct stdio_file *stdio = xmalloc (sizeof (struct stdio_file)); | |
5d502164 | 514 | |
d9fcf2fb JM |
515 | stdio->magic = &stdio_file_magic; |
516 | stdio->file = file; | |
01124a23 | 517 | stdio->fd = fileno (file); |
d9fcf2fb JM |
518 | stdio->close_p = close_p; |
519 | set_ui_file_data (ui_file, stdio, stdio_file_delete); | |
520 | set_ui_file_flush (ui_file, stdio_file_flush); | |
521 | set_ui_file_write (ui_file, stdio_file_write); | |
01124a23 | 522 | set_ui_file_write_async_safe (ui_file, stdio_file_write_async_safe); |
d9fcf2fb | 523 | set_ui_file_fputs (ui_file, stdio_file_fputs); |
449092f6 | 524 | set_ui_file_read (ui_file, stdio_file_read); |
d9fcf2fb | 525 | set_ui_file_isatty (ui_file, stdio_file_isatty); |
2a9d5ccf | 526 | set_ui_file_fseek (ui_file, stdio_file_fseek); |
d9fcf2fb JM |
527 | return ui_file; |
528 | } | |
529 | ||
530 | static void | |
fba45db2 | 531 | stdio_file_delete (struct ui_file *file) |
d9fcf2fb JM |
532 | { |
533 | struct stdio_file *stdio = ui_file_data (file); | |
5d502164 | 534 | |
d9fcf2fb | 535 | if (stdio->magic != &stdio_file_magic) |
8e65ff28 | 536 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 537 | _("stdio_file_delete: bad magic number")); |
d9fcf2fb JM |
538 | if (stdio->close_p) |
539 | { | |
540 | fclose (stdio->file); | |
541 | } | |
b8c9b27d | 542 | xfree (stdio); |
d9fcf2fb JM |
543 | } |
544 | ||
545 | static void | |
fba45db2 | 546 | stdio_file_flush (struct ui_file *file) |
d9fcf2fb JM |
547 | { |
548 | struct stdio_file *stdio = ui_file_data (file); | |
5d502164 | 549 | |
d9fcf2fb | 550 | if (stdio->magic != &stdio_file_magic) |
8e65ff28 | 551 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 552 | _("stdio_file_flush: bad magic number")); |
d9fcf2fb JM |
553 | fflush (stdio->file); |
554 | } | |
555 | ||
449092f6 CV |
556 | static long |
557 | stdio_file_read (struct ui_file *file, char *buf, long length_buf) | |
558 | { | |
559 | struct stdio_file *stdio = ui_file_data (file); | |
5d502164 | 560 | |
449092f6 CV |
561 | if (stdio->magic != &stdio_file_magic) |
562 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 563 | _("stdio_file_read: bad magic number")); |
ad960ed2 DJ |
564 | |
565 | /* For the benefit of Windows, call gdb_select before reading from | |
566 | the file. Wait until at least one byte of data is available. | |
567 | Control-C can interrupt gdb_select, but not read. */ | |
568 | { | |
ad960ed2 DJ |
569 | fd_set readfds; |
570 | FD_ZERO (&readfds); | |
01124a23 DE |
571 | FD_SET (stdio->fd, &readfds); |
572 | if (gdb_select (stdio->fd + 1, &readfds, NULL, NULL, NULL) == -1) | |
ad960ed2 DJ |
573 | return -1; |
574 | } | |
575 | ||
01124a23 | 576 | return read (stdio->fd, buf, length_buf); |
449092f6 CV |
577 | } |
578 | ||
d9fcf2fb JM |
579 | static void |
580 | stdio_file_write (struct ui_file *file, const char *buf, long length_buf) | |
581 | { | |
582 | struct stdio_file *stdio = ui_file_data (file); | |
5d502164 | 583 | |
d9fcf2fb | 584 | if (stdio->magic != &stdio_file_magic) |
8e65ff28 | 585 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 586 | _("stdio_file_write: bad magic number")); |
bf1d7d9c JB |
587 | /* Calling error crashes when we are called from the exception framework. */ |
588 | if (fwrite (buf, length_buf, 1, stdio->file)) | |
d4fb63e1 TT |
589 | { |
590 | /* Nothing. */ | |
591 | } | |
d9fcf2fb JM |
592 | } |
593 | ||
01124a23 DE |
594 | static void |
595 | stdio_file_write_async_safe (struct ui_file *file, | |
596 | const char *buf, long length_buf) | |
597 | { | |
598 | struct stdio_file *stdio = ui_file_data (file); | |
599 | ||
600 | if (stdio->magic != &stdio_file_magic) | |
601 | { | |
602 | /* gettext isn't necessarily async safe, so we can't use _("error message") here. | |
603 | We could extract the correct translation ahead of time, but this is an extremely | |
604 | rare event, and one of the other stdio_file_* routines will presumably catch | |
605 | the problem anyway. For now keep it simple and ignore the error here. */ | |
606 | return; | |
607 | } | |
608 | ||
9f7bc587 DE |
609 | /* This is written the way it is to avoid a warning from gcc about not using the |
610 | result of write (since it can be declared with attribute warn_unused_result). | |
611 | Alas casting to void doesn't work for this. */ | |
093cee7d | 612 | if (write (stdio->fd, buf, length_buf)) |
d4fb63e1 TT |
613 | { |
614 | /* Nothing. */ | |
615 | } | |
01124a23 DE |
616 | } |
617 | ||
d9fcf2fb | 618 | static void |
fba45db2 | 619 | stdio_file_fputs (const char *linebuffer, struct ui_file *file) |
d9fcf2fb JM |
620 | { |
621 | struct stdio_file *stdio = ui_file_data (file); | |
5d502164 | 622 | |
d9fcf2fb | 623 | if (stdio->magic != &stdio_file_magic) |
8e65ff28 | 624 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 625 | _("stdio_file_fputs: bad magic number")); |
bf1d7d9c JB |
626 | /* Calling error crashes when we are called from the exception framework. */ |
627 | if (fputs (linebuffer, stdio->file)) | |
d4fb63e1 TT |
628 | { |
629 | /* Nothing. */ | |
630 | } | |
d9fcf2fb JM |
631 | } |
632 | ||
633 | static int | |
fba45db2 | 634 | stdio_file_isatty (struct ui_file *file) |
d9fcf2fb JM |
635 | { |
636 | struct stdio_file *stdio = ui_file_data (file); | |
5d502164 | 637 | |
d9fcf2fb | 638 | if (stdio->magic != &stdio_file_magic) |
8e65ff28 | 639 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 640 | _("stdio_file_isatty: bad magic number")); |
01124a23 | 641 | return (isatty (stdio->fd)); |
d9fcf2fb JM |
642 | } |
643 | ||
2a9d5ccf HZ |
644 | static int |
645 | stdio_file_fseek (struct ui_file *file, long offset, int whence) | |
646 | { | |
647 | struct stdio_file *stdio = ui_file_data (file); | |
648 | ||
649 | if (stdio->magic != &stdio_file_magic) | |
650 | internal_error (__FILE__, __LINE__, | |
651 | _("stdio_file_fseek: bad magic number")); | |
652 | ||
653 | return fseek (stdio->file, offset, whence); | |
654 | } | |
655 | ||
581e13c1 | 656 | /* Like fdopen(). Create a ui_file from a previously opened FILE. */ |
d9fcf2fb JM |
657 | |
658 | struct ui_file * | |
fba45db2 | 659 | stdio_fileopen (FILE *file) |
d9fcf2fb JM |
660 | { |
661 | return stdio_file_new (file, 0); | |
662 | } | |
663 | ||
664 | struct ui_file * | |
fba45db2 | 665 | gdb_fopen (char *name, char *mode) |
d9fcf2fb JM |
666 | { |
667 | FILE *f = fopen (name, mode); | |
5d502164 | 668 | |
d9fcf2fb JM |
669 | if (f == NULL) |
670 | return NULL; | |
671 | return stdio_file_new (f, 1); | |
672 | } | |
e4c242d9 DJ |
673 | |
674 | /* ``struct ui_file'' implementation that maps onto two ui-file objects. */ | |
675 | ||
676 | static ui_file_write_ftype tee_file_write; | |
677 | static ui_file_fputs_ftype tee_file_fputs; | |
678 | static ui_file_isatty_ftype tee_file_isatty; | |
679 | static ui_file_delete_ftype tee_file_delete; | |
680 | static ui_file_flush_ftype tee_file_flush; | |
681 | ||
682 | static int tee_file_magic; | |
683 | ||
684 | struct tee_file | |
685 | { | |
686 | int *magic; | |
687 | struct ui_file *one, *two; | |
688 | int close_one, close_two; | |
689 | }; | |
690 | ||
691 | struct ui_file * | |
692 | tee_file_new (struct ui_file *one, int close_one, | |
693 | struct ui_file *two, int close_two) | |
694 | { | |
695 | struct ui_file *ui_file = ui_file_new (); | |
696 | struct tee_file *tee = xmalloc (sizeof (struct tee_file)); | |
5d502164 | 697 | |
e4c242d9 DJ |
698 | tee->magic = &tee_file_magic; |
699 | tee->one = one; | |
700 | tee->two = two; | |
701 | tee->close_one = close_one; | |
702 | tee->close_two = close_two; | |
703 | set_ui_file_data (ui_file, tee, tee_file_delete); | |
704 | set_ui_file_flush (ui_file, tee_file_flush); | |
705 | set_ui_file_write (ui_file, tee_file_write); | |
706 | set_ui_file_fputs (ui_file, tee_file_fputs); | |
707 | set_ui_file_isatty (ui_file, tee_file_isatty); | |
708 | return ui_file; | |
709 | } | |
710 | ||
711 | static void | |
712 | tee_file_delete (struct ui_file *file) | |
713 | { | |
714 | struct tee_file *tee = ui_file_data (file); | |
5d502164 | 715 | |
e4c242d9 DJ |
716 | if (tee->magic != &tee_file_magic) |
717 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 718 | _("tee_file_delete: bad magic number")); |
e4c242d9 DJ |
719 | if (tee->close_one) |
720 | ui_file_delete (tee->one); | |
721 | if (tee->close_two) | |
722 | ui_file_delete (tee->two); | |
723 | ||
724 | xfree (tee); | |
725 | } | |
726 | ||
727 | static void | |
728 | tee_file_flush (struct ui_file *file) | |
729 | { | |
730 | struct tee_file *tee = ui_file_data (file); | |
5d502164 | 731 | |
e4c242d9 DJ |
732 | if (tee->magic != &tee_file_magic) |
733 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 734 | _("tee_file_flush: bad magic number")); |
e4c242d9 DJ |
735 | tee->one->to_flush (tee->one); |
736 | tee->two->to_flush (tee->two); | |
737 | } | |
738 | ||
739 | static void | |
740 | tee_file_write (struct ui_file *file, const char *buf, long length_buf) | |
741 | { | |
742 | struct tee_file *tee = ui_file_data (file); | |
5d502164 | 743 | |
e4c242d9 DJ |
744 | if (tee->magic != &tee_file_magic) |
745 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 746 | _("tee_file_write: bad magic number")); |
e4c242d9 DJ |
747 | ui_file_write (tee->one, buf, length_buf); |
748 | ui_file_write (tee->two, buf, length_buf); | |
749 | } | |
750 | ||
751 | static void | |
752 | tee_file_fputs (const char *linebuffer, struct ui_file *file) | |
753 | { | |
754 | struct tee_file *tee = ui_file_data (file); | |
5d502164 | 755 | |
e4c242d9 DJ |
756 | if (tee->magic != &tee_file_magic) |
757 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 758 | _("tee_file_fputs: bad magic number")); |
e4c242d9 DJ |
759 | tee->one->to_fputs (linebuffer, tee->one); |
760 | tee->two->to_fputs (linebuffer, tee->two); | |
761 | } | |
762 | ||
763 | static int | |
764 | tee_file_isatty (struct ui_file *file) | |
765 | { | |
766 | struct tee_file *tee = ui_file_data (file); | |
5d502164 | 767 | |
e4c242d9 DJ |
768 | if (tee->magic != &tee_file_magic) |
769 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 770 | _("tee_file_isatty: bad magic number")); |
172240dd PA |
771 | |
772 | return ui_file_isatty (tee->one); | |
e4c242d9 | 773 | } |