Commit | Line | Data |
---|---|---|
d9fcf2fb | 1 | /* UI_FILE - a generic STDIO like output stream. |
349c5d5f | 2 | |
32d0add0 | 3 | Copyright (C) 1999-2015 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" |
ad960ed2 | 25 | #include "gdb_select.h" |
614c279d | 26 | #include "filestuff.h" |
d9fcf2fb | 27 | |
d9fcf2fb JM |
28 | static ui_file_isatty_ftype null_file_isatty; |
29 | static ui_file_write_ftype null_file_write; | |
01124a23 | 30 | static ui_file_write_ftype null_file_write_async_safe; |
d9fcf2fb | 31 | static ui_file_fputs_ftype null_file_fputs; |
449092f6 | 32 | static ui_file_read_ftype null_file_read; |
d9fcf2fb JM |
33 | static ui_file_flush_ftype null_file_flush; |
34 | static ui_file_delete_ftype null_file_delete; | |
35 | static ui_file_rewind_ftype null_file_rewind; | |
36 | static ui_file_put_ftype null_file_put; | |
2a9d5ccf | 37 | static ui_file_fseek_ftype null_file_fseek; |
d9fcf2fb JM |
38 | |
39 | struct ui_file | |
40 | { | |
41 | int *magic; | |
42 | ui_file_flush_ftype *to_flush; | |
43 | ui_file_write_ftype *to_write; | |
01124a23 | 44 | ui_file_write_async_safe_ftype *to_write_async_safe; |
d9fcf2fb | 45 | ui_file_fputs_ftype *to_fputs; |
449092f6 | 46 | ui_file_read_ftype *to_read; |
d9fcf2fb JM |
47 | ui_file_delete_ftype *to_delete; |
48 | ui_file_isatty_ftype *to_isatty; | |
49 | ui_file_rewind_ftype *to_rewind; | |
50 | ui_file_put_ftype *to_put; | |
2a9d5ccf | 51 | ui_file_fseek_ftype *to_fseek; |
d9fcf2fb JM |
52 | void *to_data; |
53 | }; | |
54 | int ui_file_magic; | |
55 | ||
56 | struct ui_file * | |
fba45db2 | 57 | ui_file_new (void) |
d9fcf2fb JM |
58 | { |
59 | struct ui_file *file = xmalloc (sizeof (struct ui_file)); | |
5d502164 | 60 | |
d9fcf2fb JM |
61 | file->magic = &ui_file_magic; |
62 | set_ui_file_data (file, NULL, null_file_delete); | |
63 | set_ui_file_flush (file, null_file_flush); | |
64 | set_ui_file_write (file, null_file_write); | |
01124a23 | 65 | set_ui_file_write_async_safe (file, null_file_write_async_safe); |
d9fcf2fb | 66 | set_ui_file_fputs (file, null_file_fputs); |
449092f6 | 67 | set_ui_file_read (file, null_file_read); |
d9fcf2fb JM |
68 | set_ui_file_isatty (file, null_file_isatty); |
69 | set_ui_file_rewind (file, null_file_rewind); | |
70 | set_ui_file_put (file, null_file_put); | |
2a9d5ccf | 71 | set_ui_file_fseek (file, null_file_fseek); |
d9fcf2fb JM |
72 | return file; |
73 | } | |
74 | ||
75 | void | |
fba45db2 | 76 | ui_file_delete (struct ui_file *file) |
d9fcf2fb JM |
77 | { |
78 | file->to_delete (file); | |
b8c9b27d | 79 | xfree (file); |
d9fcf2fb JM |
80 | } |
81 | ||
82 | static int | |
fba45db2 | 83 | null_file_isatty (struct ui_file *file) |
d9fcf2fb JM |
84 | { |
85 | return 0; | |
86 | } | |
87 | ||
88 | static void | |
fba45db2 | 89 | null_file_rewind (struct ui_file *file) |
d9fcf2fb JM |
90 | { |
91 | return; | |
92 | } | |
93 | ||
94 | static void | |
95 | null_file_put (struct ui_file *file, | |
96 | ui_file_put_method_ftype *write, | |
97 | void *dest) | |
98 | { | |
99 | return; | |
100 | } | |
101 | ||
102 | static void | |
fba45db2 | 103 | null_file_flush (struct ui_file *file) |
d9fcf2fb JM |
104 | { |
105 | return; | |
106 | } | |
107 | ||
108 | static void | |
109 | null_file_write (struct ui_file *file, | |
110 | const char *buf, | |
111 | long sizeof_buf) | |
112 | { | |
113 | if (file->to_fputs == null_file_fputs) | |
581e13c1 MS |
114 | /* Both the write and fputs methods are null. Discard the |
115 | request. */ | |
d9fcf2fb JM |
116 | return; |
117 | else | |
118 | { | |
119 | /* The fputs method isn't null, slowly pass the write request | |
120 | onto that. FYI, this isn't as bad as it may look - the | |
121 | current (as of 1999-11-07) printf_* function calls fputc and | |
122 | fputc does exactly the below. By having a write function it | |
123 | is possible to clean up that code. */ | |
124 | int i; | |
125 | char b[2]; | |
5d502164 | 126 | |
d9fcf2fb JM |
127 | b[1] = '\0'; |
128 | for (i = 0; i < sizeof_buf; i++) | |
129 | { | |
130 | b[0] = buf[i]; | |
131 | file->to_fputs (b, file); | |
132 | } | |
133 | return; | |
134 | } | |
135 | } | |
136 | ||
449092f6 CV |
137 | static long |
138 | null_file_read (struct ui_file *file, | |
139 | char *buf, | |
140 | long sizeof_buf) | |
141 | { | |
142 | errno = EBADF; | |
143 | return 0; | |
144 | } | |
145 | ||
d9fcf2fb | 146 | static void |
fba45db2 | 147 | null_file_fputs (const char *buf, struct ui_file *file) |
d9fcf2fb JM |
148 | { |
149 | if (file->to_write == null_file_write) | |
581e13c1 MS |
150 | /* Both the write and fputs methods are null. Discard the |
151 | request. */ | |
d9fcf2fb JM |
152 | return; |
153 | else | |
154 | { | |
581e13c1 | 155 | /* The write method was implemented, use that. */ |
d9fcf2fb JM |
156 | file->to_write (file, buf, strlen (buf)); |
157 | } | |
158 | } | |
159 | ||
01124a23 DE |
160 | static void |
161 | null_file_write_async_safe (struct ui_file *file, | |
162 | const char *buf, | |
163 | long sizeof_buf) | |
164 | { | |
165 | return; | |
166 | } | |
167 | ||
d9fcf2fb | 168 | static void |
fba45db2 | 169 | null_file_delete (struct ui_file *file) |
d9fcf2fb JM |
170 | { |
171 | return; | |
172 | } | |
173 | ||
2a9d5ccf HZ |
174 | static int |
175 | null_file_fseek (struct ui_file *stream, long offset, int whence) | |
176 | { | |
177 | errno = EBADF; | |
178 | ||
179 | return -1; | |
180 | } | |
181 | ||
d9fcf2fb | 182 | void * |
fba45db2 | 183 | ui_file_data (struct ui_file *file) |
d9fcf2fb JM |
184 | { |
185 | if (file->magic != &ui_file_magic) | |
8e65ff28 | 186 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 187 | _("ui_file_data: bad magic number")); |
d9fcf2fb JM |
188 | return file->to_data; |
189 | } | |
190 | ||
191 | void | |
fba45db2 | 192 | gdb_flush (struct ui_file *file) |
d9fcf2fb JM |
193 | { |
194 | file->to_flush (file); | |
195 | } | |
196 | ||
197 | int | |
fba45db2 | 198 | ui_file_isatty (struct ui_file *file) |
d9fcf2fb JM |
199 | { |
200 | return file->to_isatty (file); | |
201 | } | |
202 | ||
203 | void | |
fba45db2 | 204 | ui_file_rewind (struct ui_file *file) |
d9fcf2fb JM |
205 | { |
206 | file->to_rewind (file); | |
207 | } | |
208 | ||
209 | void | |
210 | ui_file_put (struct ui_file *file, | |
211 | ui_file_put_method_ftype *write, | |
212 | void *dest) | |
213 | { | |
214 | file->to_put (file, write, dest); | |
215 | } | |
216 | ||
217 | void | |
218 | ui_file_write (struct ui_file *file, | |
219 | const char *buf, | |
220 | long length_buf) | |
221 | { | |
222 | file->to_write (file, buf, length_buf); | |
223 | } | |
224 | ||
de571fc5 TT |
225 | void |
226 | ui_file_write_for_put (void *data, const char *buffer, long length_buffer) | |
227 | { | |
228 | ui_file_write (data, buffer, length_buffer); | |
229 | } | |
230 | ||
01124a23 DE |
231 | void |
232 | ui_file_write_async_safe (struct ui_file *file, | |
233 | const char *buf, | |
234 | long length_buf) | |
235 | { | |
236 | file->to_write_async_safe (file, buf, length_buf); | |
237 | } | |
238 | ||
449092f6 CV |
239 | long |
240 | ui_file_read (struct ui_file *file, char *buf, long length_buf) | |
241 | { | |
242 | return file->to_read (file, buf, length_buf); | |
243 | } | |
244 | ||
2a9d5ccf HZ |
245 | int |
246 | ui_file_fseek (struct ui_file *file, long offset, int whence) | |
247 | { | |
248 | return file->to_fseek (file, offset, whence); | |
249 | } | |
250 | ||
d9fcf2fb | 251 | void |
fba45db2 | 252 | fputs_unfiltered (const char *buf, struct ui_file *file) |
d9fcf2fb JM |
253 | { |
254 | file->to_fputs (buf, file); | |
255 | } | |
256 | ||
257 | void | |
3f453875 | 258 | set_ui_file_flush (struct ui_file *file, ui_file_flush_ftype *flush_ptr) |
d9fcf2fb | 259 | { |
3f453875 | 260 | file->to_flush = flush_ptr; |
d9fcf2fb JM |
261 | } |
262 | ||
263 | void | |
3f453875 | 264 | set_ui_file_isatty (struct ui_file *file, ui_file_isatty_ftype *isatty_ptr) |
d9fcf2fb | 265 | { |
3f453875 | 266 | file->to_isatty = isatty_ptr; |
d9fcf2fb JM |
267 | } |
268 | ||
269 | void | |
3f453875 | 270 | set_ui_file_rewind (struct ui_file *file, ui_file_rewind_ftype *rewind_ptr) |
d9fcf2fb | 271 | { |
3f453875 | 272 | file->to_rewind = rewind_ptr; |
d9fcf2fb JM |
273 | } |
274 | ||
275 | void | |
3f453875 | 276 | set_ui_file_put (struct ui_file *file, ui_file_put_ftype *put_ptr) |
d9fcf2fb | 277 | { |
3f453875 | 278 | file->to_put = put_ptr; |
d9fcf2fb JM |
279 | } |
280 | ||
281 | void | |
282 | set_ui_file_write (struct ui_file *file, | |
3f453875 | 283 | ui_file_write_ftype *write_ptr) |
d9fcf2fb | 284 | { |
3f453875 | 285 | file->to_write = write_ptr; |
d9fcf2fb JM |
286 | } |
287 | ||
01124a23 DE |
288 | void |
289 | set_ui_file_write_async_safe (struct ui_file *file, | |
3f453875 | 290 | ui_file_write_async_safe_ftype *write_async_safe_ptr) |
01124a23 | 291 | { |
3f453875 | 292 | file->to_write_async_safe = write_async_safe_ptr; |
01124a23 DE |
293 | } |
294 | ||
449092f6 | 295 | void |
3f453875 | 296 | set_ui_file_read (struct ui_file *file, ui_file_read_ftype *read_ptr) |
449092f6 | 297 | { |
3f453875 | 298 | file->to_read = read_ptr; |
449092f6 CV |
299 | } |
300 | ||
d9fcf2fb | 301 | void |
3f453875 | 302 | set_ui_file_fputs (struct ui_file *file, ui_file_fputs_ftype *fputs_ptr) |
d9fcf2fb | 303 | { |
3f453875 | 304 | file->to_fputs = fputs_ptr; |
d9fcf2fb JM |
305 | } |
306 | ||
2a9d5ccf HZ |
307 | void |
308 | set_ui_file_fseek (struct ui_file *file, ui_file_fseek_ftype *fseek_ptr) | |
309 | { | |
310 | file->to_fseek = fseek_ptr; | |
311 | } | |
312 | ||
d9fcf2fb | 313 | void |
fba45db2 | 314 | set_ui_file_data (struct ui_file *file, void *data, |
3f453875 | 315 | ui_file_delete_ftype *delete_ptr) |
d9fcf2fb JM |
316 | { |
317 | file->to_data = data; | |
3f453875 | 318 | file->to_delete = delete_ptr; |
d9fcf2fb JM |
319 | } |
320 | ||
321 | /* ui_file utility function for converting a ``struct ui_file'' into | |
581e13c1 | 322 | a memory buffer. */ |
d9fcf2fb JM |
323 | |
324 | struct accumulated_ui_file | |
325 | { | |
326 | char *buffer; | |
327 | long length; | |
328 | }; | |
329 | ||
330 | static void | |
331 | do_ui_file_xstrdup (void *context, const char *buffer, long length) | |
332 | { | |
333 | struct accumulated_ui_file *acc = context; | |
5d502164 | 334 | |
d9fcf2fb JM |
335 | if (acc->buffer == NULL) |
336 | acc->buffer = xmalloc (length + 1); | |
337 | else | |
338 | acc->buffer = xrealloc (acc->buffer, acc->length + length + 1); | |
339 | memcpy (acc->buffer + acc->length, buffer, length); | |
340 | acc->length += length; | |
341 | acc->buffer[acc->length] = '\0'; | |
342 | } | |
343 | ||
344 | char * | |
759ef836 | 345 | ui_file_xstrdup (struct ui_file *file, long *length) |
d9fcf2fb JM |
346 | { |
347 | struct accumulated_ui_file acc; | |
5d502164 | 348 | |
d9fcf2fb JM |
349 | acc.buffer = NULL; |
350 | acc.length = 0; | |
351 | ui_file_put (file, do_ui_file_xstrdup, &acc); | |
352 | if (acc.buffer == NULL) | |
353 | acc.buffer = xstrdup (""); | |
759ef836 PA |
354 | if (length != NULL) |
355 | *length = acc.length; | |
d9fcf2fb JM |
356 | return acc.buffer; |
357 | } | |
94af9270 KS |
358 | |
359 | static void | |
360 | do_ui_file_obsavestring (void *context, const char *buffer, long length) | |
361 | { | |
362 | struct obstack *obstack = (struct obstack *) context; | |
5d502164 | 363 | |
94af9270 KS |
364 | obstack_grow (obstack, buffer, length); |
365 | } | |
366 | ||
367 | char * | |
368 | ui_file_obsavestring (struct ui_file *file, struct obstack *obstack, | |
369 | long *length) | |
370 | { | |
371 | ui_file_put (file, do_ui_file_obsavestring, obstack); | |
372 | *length = obstack_object_size (obstack); | |
373 | obstack_1grow (obstack, '\0'); | |
374 | return obstack_finish (obstack); | |
375 | } | |
d9fcf2fb JM |
376 | \f |
377 | /* A pure memory based ``struct ui_file'' that can be used an output | |
581e13c1 MS |
378 | buffer. The buffers accumulated contents are available via |
379 | ui_file_put(). */ | |
d9fcf2fb JM |
380 | |
381 | struct mem_file | |
382 | { | |
383 | int *magic; | |
384 | char *buffer; | |
385 | int sizeof_buffer; | |
386 | int length_buffer; | |
387 | }; | |
388 | ||
389 | static ui_file_rewind_ftype mem_file_rewind; | |
390 | static ui_file_put_ftype mem_file_put; | |
391 | static ui_file_write_ftype mem_file_write; | |
392 | static ui_file_delete_ftype mem_file_delete; | |
a14ed312 | 393 | static struct ui_file *mem_file_new (void); |
d9fcf2fb JM |
394 | static int mem_file_magic; |
395 | ||
396 | static struct ui_file * | |
397 | mem_file_new (void) | |
398 | { | |
70ba0933 | 399 | struct mem_file *stream = XNEW (struct mem_file); |
d9fcf2fb | 400 | struct ui_file *file = ui_file_new (); |
5d502164 | 401 | |
d9fcf2fb JM |
402 | set_ui_file_data (file, stream, mem_file_delete); |
403 | set_ui_file_rewind (file, mem_file_rewind); | |
404 | set_ui_file_put (file, mem_file_put); | |
405 | set_ui_file_write (file, mem_file_write); | |
406 | stream->magic = &mem_file_magic; | |
407 | stream->buffer = NULL; | |
408 | stream->sizeof_buffer = 0; | |
409 | stream->length_buffer = 0; | |
410 | return file; | |
411 | } | |
412 | ||
413 | static void | |
414 | mem_file_delete (struct ui_file *file) | |
415 | { | |
416 | struct mem_file *stream = ui_file_data (file); | |
5d502164 | 417 | |
d9fcf2fb | 418 | if (stream->magic != &mem_file_magic) |
8e65ff28 | 419 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 420 | _("mem_file_delete: bad magic number")); |
d9fcf2fb | 421 | if (stream->buffer != NULL) |
b8c9b27d KB |
422 | xfree (stream->buffer); |
423 | xfree (stream); | |
d9fcf2fb JM |
424 | } |
425 | ||
426 | struct ui_file * | |
427 | mem_fileopen (void) | |
428 | { | |
429 | return mem_file_new (); | |
430 | } | |
431 | ||
432 | static void | |
433 | mem_file_rewind (struct ui_file *file) | |
434 | { | |
435 | struct mem_file *stream = ui_file_data (file); | |
5d502164 | 436 | |
d9fcf2fb | 437 | if (stream->magic != &mem_file_magic) |
8e65ff28 | 438 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 439 | _("mem_file_rewind: bad magic number")); |
d9fcf2fb JM |
440 | stream->length_buffer = 0; |
441 | } | |
442 | ||
443 | static void | |
444 | mem_file_put (struct ui_file *file, | |
445 | ui_file_put_method_ftype *write, | |
446 | void *dest) | |
447 | { | |
448 | struct mem_file *stream = ui_file_data (file); | |
5d502164 | 449 | |
d9fcf2fb | 450 | if (stream->magic != &mem_file_magic) |
8e65ff28 | 451 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 452 | _("mem_file_put: bad magic number")); |
d9fcf2fb JM |
453 | if (stream->length_buffer > 0) |
454 | write (dest, stream->buffer, stream->length_buffer); | |
455 | } | |
456 | ||
457 | void | |
458 | mem_file_write (struct ui_file *file, | |
459 | const char *buffer, | |
460 | long length_buffer) | |
461 | { | |
462 | struct mem_file *stream = ui_file_data (file); | |
5d502164 | 463 | |
d9fcf2fb | 464 | if (stream->magic != &mem_file_magic) |
8e65ff28 | 465 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 466 | _("mem_file_write: bad magic number")); |
d9fcf2fb JM |
467 | if (stream->buffer == NULL) |
468 | { | |
469 | stream->length_buffer = length_buffer; | |
470 | stream->sizeof_buffer = length_buffer; | |
471 | stream->buffer = xmalloc (stream->sizeof_buffer); | |
472 | memcpy (stream->buffer, buffer, length_buffer); | |
473 | } | |
474 | else | |
475 | { | |
476 | int new_length = stream->length_buffer + length_buffer; | |
5d502164 | 477 | |
d9fcf2fb JM |
478 | if (new_length >= stream->sizeof_buffer) |
479 | { | |
480 | stream->sizeof_buffer = new_length; | |
481 | stream->buffer = xrealloc (stream->buffer, stream->sizeof_buffer); | |
482 | } | |
483 | memcpy (stream->buffer + stream->length_buffer, buffer, length_buffer); | |
484 | stream->length_buffer = new_length; | |
485 | } | |
486 | } | |
487 | \f | |
488 | /* ``struct ui_file'' implementation that maps directly onto | |
581e13c1 | 489 | <stdio.h>'s FILE. */ |
d9fcf2fb JM |
490 | |
491 | static ui_file_write_ftype stdio_file_write; | |
01124a23 | 492 | static ui_file_write_async_safe_ftype stdio_file_write_async_safe; |
d9fcf2fb | 493 | static ui_file_fputs_ftype stdio_file_fputs; |
449092f6 | 494 | static ui_file_read_ftype stdio_file_read; |
d9fcf2fb JM |
495 | static ui_file_isatty_ftype stdio_file_isatty; |
496 | static ui_file_delete_ftype stdio_file_delete; | |
3e43a32a | 497 | static struct ui_file *stdio_file_new (FILE *file, int close_p); |
d9fcf2fb | 498 | static ui_file_flush_ftype stdio_file_flush; |
2a9d5ccf | 499 | static ui_file_fseek_ftype stdio_file_fseek; |
d9fcf2fb JM |
500 | |
501 | static int stdio_file_magic; | |
502 | ||
503 | struct stdio_file | |
504 | { | |
505 | int *magic; | |
506 | FILE *file; | |
01124a23 DE |
507 | /* The associated file descriptor is extracted ahead of time for |
508 | stdio_file_write_async_safe's benefit, in case fileno isn't async-safe. */ | |
509 | int fd; | |
d9fcf2fb JM |
510 | int close_p; |
511 | }; | |
512 | ||
513 | static struct ui_file * | |
fba45db2 | 514 | stdio_file_new (FILE *file, int close_p) |
d9fcf2fb JM |
515 | { |
516 | struct ui_file *ui_file = ui_file_new (); | |
517 | struct stdio_file *stdio = xmalloc (sizeof (struct stdio_file)); | |
5d502164 | 518 | |
d9fcf2fb JM |
519 | stdio->magic = &stdio_file_magic; |
520 | stdio->file = file; | |
01124a23 | 521 | stdio->fd = fileno (file); |
d9fcf2fb JM |
522 | stdio->close_p = close_p; |
523 | set_ui_file_data (ui_file, stdio, stdio_file_delete); | |
524 | set_ui_file_flush (ui_file, stdio_file_flush); | |
525 | set_ui_file_write (ui_file, stdio_file_write); | |
01124a23 | 526 | set_ui_file_write_async_safe (ui_file, stdio_file_write_async_safe); |
d9fcf2fb | 527 | set_ui_file_fputs (ui_file, stdio_file_fputs); |
449092f6 | 528 | set_ui_file_read (ui_file, stdio_file_read); |
d9fcf2fb | 529 | set_ui_file_isatty (ui_file, stdio_file_isatty); |
2a9d5ccf | 530 | set_ui_file_fseek (ui_file, stdio_file_fseek); |
d9fcf2fb JM |
531 | return ui_file; |
532 | } | |
533 | ||
534 | static void | |
fba45db2 | 535 | stdio_file_delete (struct ui_file *file) |
d9fcf2fb JM |
536 | { |
537 | struct stdio_file *stdio = ui_file_data (file); | |
5d502164 | 538 | |
d9fcf2fb | 539 | if (stdio->magic != &stdio_file_magic) |
8e65ff28 | 540 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 541 | _("stdio_file_delete: bad magic number")); |
d9fcf2fb JM |
542 | if (stdio->close_p) |
543 | { | |
544 | fclose (stdio->file); | |
545 | } | |
b8c9b27d | 546 | xfree (stdio); |
d9fcf2fb JM |
547 | } |
548 | ||
549 | static void | |
fba45db2 | 550 | stdio_file_flush (struct ui_file *file) |
d9fcf2fb JM |
551 | { |
552 | struct stdio_file *stdio = ui_file_data (file); | |
5d502164 | 553 | |
d9fcf2fb | 554 | if (stdio->magic != &stdio_file_magic) |
8e65ff28 | 555 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 556 | _("stdio_file_flush: bad magic number")); |
d9fcf2fb JM |
557 | fflush (stdio->file); |
558 | } | |
559 | ||
449092f6 CV |
560 | static long |
561 | stdio_file_read (struct ui_file *file, char *buf, long length_buf) | |
562 | { | |
563 | struct stdio_file *stdio = ui_file_data (file); | |
5d502164 | 564 | |
449092f6 CV |
565 | if (stdio->magic != &stdio_file_magic) |
566 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 567 | _("stdio_file_read: bad magic number")); |
ad960ed2 DJ |
568 | |
569 | /* For the benefit of Windows, call gdb_select before reading from | |
570 | the file. Wait until at least one byte of data is available. | |
571 | Control-C can interrupt gdb_select, but not read. */ | |
572 | { | |
ad960ed2 DJ |
573 | fd_set readfds; |
574 | FD_ZERO (&readfds); | |
01124a23 DE |
575 | FD_SET (stdio->fd, &readfds); |
576 | if (gdb_select (stdio->fd + 1, &readfds, NULL, NULL, NULL) == -1) | |
ad960ed2 DJ |
577 | return -1; |
578 | } | |
579 | ||
01124a23 | 580 | return read (stdio->fd, buf, length_buf); |
449092f6 CV |
581 | } |
582 | ||
d9fcf2fb JM |
583 | static void |
584 | stdio_file_write (struct ui_file *file, const char *buf, long length_buf) | |
585 | { | |
586 | struct stdio_file *stdio = ui_file_data (file); | |
5d502164 | 587 | |
d9fcf2fb | 588 | if (stdio->magic != &stdio_file_magic) |
8e65ff28 | 589 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 590 | _("stdio_file_write: bad magic number")); |
bf1d7d9c JB |
591 | /* Calling error crashes when we are called from the exception framework. */ |
592 | if (fwrite (buf, length_buf, 1, stdio->file)) | |
d4fb63e1 TT |
593 | { |
594 | /* Nothing. */ | |
595 | } | |
d9fcf2fb JM |
596 | } |
597 | ||
01124a23 DE |
598 | static void |
599 | stdio_file_write_async_safe (struct ui_file *file, | |
600 | const char *buf, long length_buf) | |
601 | { | |
602 | struct stdio_file *stdio = ui_file_data (file); | |
603 | ||
604 | if (stdio->magic != &stdio_file_magic) | |
605 | { | |
606 | /* gettext isn't necessarily async safe, so we can't use _("error message") here. | |
607 | We could extract the correct translation ahead of time, but this is an extremely | |
608 | rare event, and one of the other stdio_file_* routines will presumably catch | |
609 | the problem anyway. For now keep it simple and ignore the error here. */ | |
610 | return; | |
611 | } | |
612 | ||
9f7bc587 DE |
613 | /* This is written the way it is to avoid a warning from gcc about not using the |
614 | result of write (since it can be declared with attribute warn_unused_result). | |
615 | Alas casting to void doesn't work for this. */ | |
093cee7d | 616 | if (write (stdio->fd, buf, length_buf)) |
d4fb63e1 TT |
617 | { |
618 | /* Nothing. */ | |
619 | } | |
01124a23 DE |
620 | } |
621 | ||
d9fcf2fb | 622 | static void |
fba45db2 | 623 | stdio_file_fputs (const char *linebuffer, struct ui_file *file) |
d9fcf2fb JM |
624 | { |
625 | struct stdio_file *stdio = ui_file_data (file); | |
5d502164 | 626 | |
d9fcf2fb | 627 | if (stdio->magic != &stdio_file_magic) |
8e65ff28 | 628 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 629 | _("stdio_file_fputs: bad magic number")); |
bf1d7d9c JB |
630 | /* Calling error crashes when we are called from the exception framework. */ |
631 | if (fputs (linebuffer, stdio->file)) | |
d4fb63e1 TT |
632 | { |
633 | /* Nothing. */ | |
634 | } | |
d9fcf2fb JM |
635 | } |
636 | ||
637 | static int | |
fba45db2 | 638 | stdio_file_isatty (struct ui_file *file) |
d9fcf2fb JM |
639 | { |
640 | struct stdio_file *stdio = ui_file_data (file); | |
5d502164 | 641 | |
d9fcf2fb | 642 | if (stdio->magic != &stdio_file_magic) |
8e65ff28 | 643 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 644 | _("stdio_file_isatty: bad magic number")); |
01124a23 | 645 | return (isatty (stdio->fd)); |
d9fcf2fb JM |
646 | } |
647 | ||
2a9d5ccf HZ |
648 | static int |
649 | stdio_file_fseek (struct ui_file *file, long offset, int whence) | |
650 | { | |
651 | struct stdio_file *stdio = ui_file_data (file); | |
652 | ||
653 | if (stdio->magic != &stdio_file_magic) | |
654 | internal_error (__FILE__, __LINE__, | |
655 | _("stdio_file_fseek: bad magic number")); | |
656 | ||
657 | return fseek (stdio->file, offset, whence); | |
658 | } | |
659 | ||
ffa4ac95 YQ |
660 | #ifdef __MINGW32__ |
661 | /* This is the implementation of ui_file method to_write for stderr. | |
662 | gdb_stdout is flushed before writing to gdb_stderr. */ | |
663 | ||
664 | static void | |
665 | stderr_file_write (struct ui_file *file, const char *buf, long length_buf) | |
666 | { | |
667 | gdb_flush (gdb_stdout); | |
668 | stdio_file_write (file, buf, length_buf); | |
669 | } | |
670 | ||
671 | /* This is the implementation of ui_file method to_fputs for stderr. | |
672 | gdb_stdout is flushed before writing to gdb_stderr. */ | |
673 | ||
674 | static void | |
675 | stderr_file_fputs (const char *linebuffer, struct ui_file *file) | |
676 | { | |
677 | gdb_flush (gdb_stdout); | |
678 | stdio_file_fputs (linebuffer, file); | |
679 | } | |
680 | #endif | |
681 | ||
682 | struct ui_file * | |
683 | stderr_fileopen (void) | |
684 | { | |
685 | struct ui_file *ui_file = stdio_fileopen (stderr); | |
686 | ||
687 | #ifdef __MINGW32__ | |
688 | /* There is no real line-buffering on Windows, see | |
689 | http://msdn.microsoft.com/en-us/library/86cebhfs%28v=vs.71%29.aspx | |
690 | so the stdout is either fully-buffered or non-buffered. We can't | |
691 | make stdout non-buffered, because of two concerns, | |
692 | 1. non-buffering hurts performance, | |
693 | 2. non-buffering may change GDB's behavior when it is interacting | |
694 | with front-end, such as Emacs. | |
695 | ||
696 | We decided to leave stdout as fully buffered, but flush it first | |
697 | when something is written to stderr. */ | |
698 | ||
699 | /* Method 'to_write_async_safe' is not overwritten, because there's | |
700 | no way to flush a stream in an async-safe manner. Fortunately, | |
701 | it doesn't really matter, because: | |
702 | - that method is only used for printing internal debug output | |
703 | from signal handlers. | |
704 | - Windows hosts don't have a concept of async-safeness. Signal | |
705 | handlers run in a separate thread, so they can call | |
706 | the regular non-async-safe output routines freely. */ | |
707 | set_ui_file_write (ui_file, stderr_file_write); | |
708 | set_ui_file_fputs (ui_file, stderr_file_fputs); | |
709 | #endif | |
710 | ||
711 | return ui_file; | |
712 | } | |
713 | ||
581e13c1 | 714 | /* Like fdopen(). Create a ui_file from a previously opened FILE. */ |
d9fcf2fb JM |
715 | |
716 | struct ui_file * | |
fba45db2 | 717 | stdio_fileopen (FILE *file) |
d9fcf2fb JM |
718 | { |
719 | return stdio_file_new (file, 0); | |
720 | } | |
721 | ||
722 | struct ui_file * | |
23b3a2c3 | 723 | gdb_fopen (const char *name, const char *mode) |
d9fcf2fb | 724 | { |
614c279d | 725 | FILE *f = gdb_fopen_cloexec (name, mode); |
5d502164 | 726 | |
d9fcf2fb JM |
727 | if (f == NULL) |
728 | return NULL; | |
729 | return stdio_file_new (f, 1); | |
730 | } | |
e4c242d9 DJ |
731 | |
732 | /* ``struct ui_file'' implementation that maps onto two ui-file objects. */ | |
733 | ||
734 | static ui_file_write_ftype tee_file_write; | |
735 | static ui_file_fputs_ftype tee_file_fputs; | |
736 | static ui_file_isatty_ftype tee_file_isatty; | |
737 | static ui_file_delete_ftype tee_file_delete; | |
738 | static ui_file_flush_ftype tee_file_flush; | |
739 | ||
740 | static int tee_file_magic; | |
741 | ||
742 | struct tee_file | |
743 | { | |
744 | int *magic; | |
745 | struct ui_file *one, *two; | |
746 | int close_one, close_two; | |
747 | }; | |
748 | ||
749 | struct ui_file * | |
750 | tee_file_new (struct ui_file *one, int close_one, | |
751 | struct ui_file *two, int close_two) | |
752 | { | |
753 | struct ui_file *ui_file = ui_file_new (); | |
754 | struct tee_file *tee = xmalloc (sizeof (struct tee_file)); | |
5d502164 | 755 | |
e4c242d9 DJ |
756 | tee->magic = &tee_file_magic; |
757 | tee->one = one; | |
758 | tee->two = two; | |
759 | tee->close_one = close_one; | |
760 | tee->close_two = close_two; | |
761 | set_ui_file_data (ui_file, tee, tee_file_delete); | |
762 | set_ui_file_flush (ui_file, tee_file_flush); | |
763 | set_ui_file_write (ui_file, tee_file_write); | |
764 | set_ui_file_fputs (ui_file, tee_file_fputs); | |
765 | set_ui_file_isatty (ui_file, tee_file_isatty); | |
766 | return ui_file; | |
767 | } | |
768 | ||
769 | static void | |
770 | tee_file_delete (struct ui_file *file) | |
771 | { | |
772 | struct tee_file *tee = ui_file_data (file); | |
5d502164 | 773 | |
e4c242d9 DJ |
774 | if (tee->magic != &tee_file_magic) |
775 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 776 | _("tee_file_delete: bad magic number")); |
e4c242d9 DJ |
777 | if (tee->close_one) |
778 | ui_file_delete (tee->one); | |
779 | if (tee->close_two) | |
780 | ui_file_delete (tee->two); | |
781 | ||
782 | xfree (tee); | |
783 | } | |
784 | ||
785 | static void | |
786 | tee_file_flush (struct ui_file *file) | |
787 | { | |
788 | struct tee_file *tee = ui_file_data (file); | |
5d502164 | 789 | |
e4c242d9 DJ |
790 | if (tee->magic != &tee_file_magic) |
791 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 792 | _("tee_file_flush: bad magic number")); |
e4c242d9 DJ |
793 | tee->one->to_flush (tee->one); |
794 | tee->two->to_flush (tee->two); | |
795 | } | |
796 | ||
797 | static void | |
798 | tee_file_write (struct ui_file *file, const char *buf, long length_buf) | |
799 | { | |
800 | struct tee_file *tee = ui_file_data (file); | |
5d502164 | 801 | |
e4c242d9 DJ |
802 | if (tee->magic != &tee_file_magic) |
803 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 804 | _("tee_file_write: bad magic number")); |
e4c242d9 DJ |
805 | ui_file_write (tee->one, buf, length_buf); |
806 | ui_file_write (tee->two, buf, length_buf); | |
807 | } | |
808 | ||
809 | static void | |
810 | tee_file_fputs (const char *linebuffer, struct ui_file *file) | |
811 | { | |
812 | struct tee_file *tee = ui_file_data (file); | |
5d502164 | 813 | |
e4c242d9 DJ |
814 | if (tee->magic != &tee_file_magic) |
815 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 816 | _("tee_file_fputs: bad magic number")); |
e4c242d9 DJ |
817 | tee->one->to_fputs (linebuffer, tee->one); |
818 | tee->two->to_fputs (linebuffer, tee->two); | |
819 | } | |
820 | ||
821 | static int | |
822 | tee_file_isatty (struct ui_file *file) | |
823 | { | |
824 | struct tee_file *tee = ui_file_data (file); | |
5d502164 | 825 | |
e4c242d9 DJ |
826 | if (tee->magic != &tee_file_magic) |
827 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 828 | _("tee_file_isatty: bad magic number")); |
172240dd PA |
829 | |
830 | return ui_file_isatty (tee->one); | |
e4c242d9 | 831 | } |