Commit | Line | Data |
---|---|---|
d9fcf2fb | 1 | /* UI_FILE - a generic STDIO like output stream. |
349c5d5f | 2 | |
61baf725 | 3 | Copyright (C) 1999-2017 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 | 58 | { |
8d749320 | 59 | struct ui_file *file = XNEW (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 | { | |
19ba03f4 | 228 | ui_file_write ((struct ui_file *) data, buffer, length_buffer); |
de571fc5 TT |
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 | { | |
19ba03f4 | 333 | struct accumulated_ui_file *acc = (struct accumulated_ui_file *) context; |
5d502164 | 334 | |
d9fcf2fb | 335 | if (acc->buffer == NULL) |
224c3ddb | 336 | acc->buffer = (char *) xmalloc (length + 1); |
d9fcf2fb | 337 | else |
224c3ddb | 338 | acc->buffer = (char *) xrealloc (acc->buffer, acc->length + length + 1); |
d9fcf2fb JM |
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 | 358 | |
8de00631 PA |
359 | /* ui_file utility function for converting a ``struct ui_file'' into a |
360 | std:string. */ | |
361 | ||
362 | static void | |
363 | do_ui_file_as_string (void *context, const char *buffer, long length) | |
364 | { | |
365 | std::string *str = (std::string *) context; | |
366 | ||
367 | *str = std::string (buffer, length); | |
368 | } | |
369 | ||
370 | /* See ui-file.h. */ | |
371 | ||
372 | std::string | |
373 | ui_file_as_string (struct ui_file *file) | |
374 | { | |
375 | std::string str; | |
376 | ||
377 | ui_file_put (file, do_ui_file_as_string, &str); | |
378 | return str; | |
379 | } | |
380 | ||
94af9270 KS |
381 | static void |
382 | do_ui_file_obsavestring (void *context, const char *buffer, long length) | |
383 | { | |
384 | struct obstack *obstack = (struct obstack *) context; | |
5d502164 | 385 | |
94af9270 KS |
386 | obstack_grow (obstack, buffer, length); |
387 | } | |
388 | ||
389 | char * | |
390 | ui_file_obsavestring (struct ui_file *file, struct obstack *obstack, | |
391 | long *length) | |
392 | { | |
393 | ui_file_put (file, do_ui_file_obsavestring, obstack); | |
394 | *length = obstack_object_size (obstack); | |
395 | obstack_1grow (obstack, '\0'); | |
224c3ddb | 396 | return (char *) obstack_finish (obstack); |
94af9270 | 397 | } |
d9fcf2fb JM |
398 | \f |
399 | /* A pure memory based ``struct ui_file'' that can be used an output | |
581e13c1 MS |
400 | buffer. The buffers accumulated contents are available via |
401 | ui_file_put(). */ | |
d9fcf2fb JM |
402 | |
403 | struct mem_file | |
404 | { | |
405 | int *magic; | |
406 | char *buffer; | |
407 | int sizeof_buffer; | |
408 | int length_buffer; | |
409 | }; | |
410 | ||
411 | static ui_file_rewind_ftype mem_file_rewind; | |
412 | static ui_file_put_ftype mem_file_put; | |
413 | static ui_file_write_ftype mem_file_write; | |
414 | static ui_file_delete_ftype mem_file_delete; | |
a14ed312 | 415 | static struct ui_file *mem_file_new (void); |
d9fcf2fb JM |
416 | static int mem_file_magic; |
417 | ||
418 | static struct ui_file * | |
419 | mem_file_new (void) | |
420 | { | |
70ba0933 | 421 | struct mem_file *stream = XNEW (struct mem_file); |
d9fcf2fb | 422 | struct ui_file *file = ui_file_new (); |
5d502164 | 423 | |
d9fcf2fb JM |
424 | set_ui_file_data (file, stream, mem_file_delete); |
425 | set_ui_file_rewind (file, mem_file_rewind); | |
426 | set_ui_file_put (file, mem_file_put); | |
427 | set_ui_file_write (file, mem_file_write); | |
428 | stream->magic = &mem_file_magic; | |
429 | stream->buffer = NULL; | |
430 | stream->sizeof_buffer = 0; | |
431 | stream->length_buffer = 0; | |
432 | return file; | |
433 | } | |
434 | ||
435 | static void | |
436 | mem_file_delete (struct ui_file *file) | |
437 | { | |
19ba03f4 | 438 | struct mem_file *stream = (struct mem_file *) ui_file_data (file); |
5d502164 | 439 | |
d9fcf2fb | 440 | if (stream->magic != &mem_file_magic) |
8e65ff28 | 441 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 442 | _("mem_file_delete: bad magic number")); |
d9fcf2fb | 443 | if (stream->buffer != NULL) |
b8c9b27d KB |
444 | xfree (stream->buffer); |
445 | xfree (stream); | |
d9fcf2fb JM |
446 | } |
447 | ||
448 | struct ui_file * | |
449 | mem_fileopen (void) | |
450 | { | |
451 | return mem_file_new (); | |
452 | } | |
453 | ||
454 | static void | |
455 | mem_file_rewind (struct ui_file *file) | |
456 | { | |
19ba03f4 | 457 | struct mem_file *stream = (struct mem_file *) ui_file_data (file); |
5d502164 | 458 | |
d9fcf2fb | 459 | if (stream->magic != &mem_file_magic) |
8e65ff28 | 460 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 461 | _("mem_file_rewind: bad magic number")); |
d9fcf2fb JM |
462 | stream->length_buffer = 0; |
463 | } | |
464 | ||
465 | static void | |
466 | mem_file_put (struct ui_file *file, | |
467 | ui_file_put_method_ftype *write, | |
468 | void *dest) | |
469 | { | |
19ba03f4 | 470 | struct mem_file *stream = (struct mem_file *) ui_file_data (file); |
5d502164 | 471 | |
d9fcf2fb | 472 | if (stream->magic != &mem_file_magic) |
8e65ff28 | 473 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 474 | _("mem_file_put: bad magic number")); |
d9fcf2fb JM |
475 | if (stream->length_buffer > 0) |
476 | write (dest, stream->buffer, stream->length_buffer); | |
477 | } | |
478 | ||
479 | void | |
480 | mem_file_write (struct ui_file *file, | |
481 | const char *buffer, | |
482 | long length_buffer) | |
483 | { | |
19ba03f4 | 484 | struct mem_file *stream = (struct mem_file *) ui_file_data (file); |
5d502164 | 485 | |
d9fcf2fb | 486 | if (stream->magic != &mem_file_magic) |
8e65ff28 | 487 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 488 | _("mem_file_write: bad magic number")); |
d9fcf2fb JM |
489 | if (stream->buffer == NULL) |
490 | { | |
491 | stream->length_buffer = length_buffer; | |
492 | stream->sizeof_buffer = length_buffer; | |
224c3ddb | 493 | stream->buffer = (char *) xmalloc (stream->sizeof_buffer); |
d9fcf2fb JM |
494 | memcpy (stream->buffer, buffer, length_buffer); |
495 | } | |
496 | else | |
497 | { | |
498 | int new_length = stream->length_buffer + length_buffer; | |
5d502164 | 499 | |
d9fcf2fb JM |
500 | if (new_length >= stream->sizeof_buffer) |
501 | { | |
502 | stream->sizeof_buffer = new_length; | |
224c3ddb SM |
503 | stream->buffer |
504 | = (char *) xrealloc (stream->buffer, stream->sizeof_buffer); | |
d9fcf2fb JM |
505 | } |
506 | memcpy (stream->buffer + stream->length_buffer, buffer, length_buffer); | |
507 | stream->length_buffer = new_length; | |
508 | } | |
509 | } | |
510 | \f | |
511 | /* ``struct ui_file'' implementation that maps directly onto | |
581e13c1 | 512 | <stdio.h>'s FILE. */ |
d9fcf2fb JM |
513 | |
514 | static ui_file_write_ftype stdio_file_write; | |
01124a23 | 515 | static ui_file_write_async_safe_ftype stdio_file_write_async_safe; |
d9fcf2fb | 516 | static ui_file_fputs_ftype stdio_file_fputs; |
449092f6 | 517 | static ui_file_read_ftype stdio_file_read; |
d9fcf2fb JM |
518 | static ui_file_isatty_ftype stdio_file_isatty; |
519 | static ui_file_delete_ftype stdio_file_delete; | |
3e43a32a | 520 | static struct ui_file *stdio_file_new (FILE *file, int close_p); |
d9fcf2fb | 521 | static ui_file_flush_ftype stdio_file_flush; |
2a9d5ccf | 522 | static ui_file_fseek_ftype stdio_file_fseek; |
d9fcf2fb JM |
523 | |
524 | static int stdio_file_magic; | |
525 | ||
526 | struct stdio_file | |
527 | { | |
528 | int *magic; | |
529 | FILE *file; | |
01124a23 DE |
530 | /* The associated file descriptor is extracted ahead of time for |
531 | stdio_file_write_async_safe's benefit, in case fileno isn't async-safe. */ | |
532 | int fd; | |
d9fcf2fb JM |
533 | int close_p; |
534 | }; | |
535 | ||
536 | static struct ui_file * | |
fba45db2 | 537 | stdio_file_new (FILE *file, int close_p) |
d9fcf2fb JM |
538 | { |
539 | struct ui_file *ui_file = ui_file_new (); | |
8d749320 | 540 | struct stdio_file *stdio = XNEW (struct stdio_file); |
5d502164 | 541 | |
d9fcf2fb JM |
542 | stdio->magic = &stdio_file_magic; |
543 | stdio->file = file; | |
01124a23 | 544 | stdio->fd = fileno (file); |
d9fcf2fb JM |
545 | stdio->close_p = close_p; |
546 | set_ui_file_data (ui_file, stdio, stdio_file_delete); | |
547 | set_ui_file_flush (ui_file, stdio_file_flush); | |
548 | set_ui_file_write (ui_file, stdio_file_write); | |
01124a23 | 549 | set_ui_file_write_async_safe (ui_file, stdio_file_write_async_safe); |
d9fcf2fb | 550 | set_ui_file_fputs (ui_file, stdio_file_fputs); |
449092f6 | 551 | set_ui_file_read (ui_file, stdio_file_read); |
d9fcf2fb | 552 | set_ui_file_isatty (ui_file, stdio_file_isatty); |
2a9d5ccf | 553 | set_ui_file_fseek (ui_file, stdio_file_fseek); |
d9fcf2fb JM |
554 | return ui_file; |
555 | } | |
556 | ||
557 | static void | |
fba45db2 | 558 | stdio_file_delete (struct ui_file *file) |
d9fcf2fb | 559 | { |
19ba03f4 | 560 | struct stdio_file *stdio = (struct stdio_file *) ui_file_data (file); |
5d502164 | 561 | |
d9fcf2fb | 562 | if (stdio->magic != &stdio_file_magic) |
8e65ff28 | 563 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 564 | _("stdio_file_delete: bad magic number")); |
d9fcf2fb JM |
565 | if (stdio->close_p) |
566 | { | |
567 | fclose (stdio->file); | |
568 | } | |
b8c9b27d | 569 | xfree (stdio); |
d9fcf2fb JM |
570 | } |
571 | ||
572 | static void | |
fba45db2 | 573 | stdio_file_flush (struct ui_file *file) |
d9fcf2fb | 574 | { |
19ba03f4 | 575 | struct stdio_file *stdio = (struct stdio_file *) ui_file_data (file); |
5d502164 | 576 | |
d9fcf2fb | 577 | if (stdio->magic != &stdio_file_magic) |
8e65ff28 | 578 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 579 | _("stdio_file_flush: bad magic number")); |
d9fcf2fb JM |
580 | fflush (stdio->file); |
581 | } | |
582 | ||
449092f6 CV |
583 | static long |
584 | stdio_file_read (struct ui_file *file, char *buf, long length_buf) | |
585 | { | |
19ba03f4 | 586 | struct stdio_file *stdio = (struct stdio_file *) ui_file_data (file); |
5d502164 | 587 | |
449092f6 CV |
588 | if (stdio->magic != &stdio_file_magic) |
589 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 590 | _("stdio_file_read: bad magic number")); |
ad960ed2 | 591 | |
f0881b37 PA |
592 | /* Wait until at least one byte of data is available, or we get |
593 | interrupted with Control-C. */ | |
ad960ed2 | 594 | { |
ad960ed2 | 595 | fd_set readfds; |
f0881b37 | 596 | |
ad960ed2 | 597 | FD_ZERO (&readfds); |
01124a23 | 598 | FD_SET (stdio->fd, &readfds); |
f0881b37 | 599 | if (interruptible_select (stdio->fd + 1, &readfds, NULL, NULL, NULL) == -1) |
ad960ed2 DJ |
600 | return -1; |
601 | } | |
602 | ||
01124a23 | 603 | return read (stdio->fd, buf, length_buf); |
449092f6 CV |
604 | } |
605 | ||
d9fcf2fb JM |
606 | static void |
607 | stdio_file_write (struct ui_file *file, const char *buf, long length_buf) | |
608 | { | |
19ba03f4 | 609 | struct stdio_file *stdio = (struct stdio_file *) ui_file_data (file); |
5d502164 | 610 | |
d9fcf2fb | 611 | if (stdio->magic != &stdio_file_magic) |
8e65ff28 | 612 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 613 | _("stdio_file_write: bad magic number")); |
bf1d7d9c JB |
614 | /* Calling error crashes when we are called from the exception framework. */ |
615 | if (fwrite (buf, length_buf, 1, stdio->file)) | |
d4fb63e1 TT |
616 | { |
617 | /* Nothing. */ | |
618 | } | |
d9fcf2fb JM |
619 | } |
620 | ||
01124a23 DE |
621 | static void |
622 | stdio_file_write_async_safe (struct ui_file *file, | |
623 | const char *buf, long length_buf) | |
624 | { | |
19ba03f4 | 625 | struct stdio_file *stdio = (struct stdio_file *) ui_file_data (file); |
01124a23 DE |
626 | |
627 | if (stdio->magic != &stdio_file_magic) | |
628 | { | |
629 | /* gettext isn't necessarily async safe, so we can't use _("error message") here. | |
630 | We could extract the correct translation ahead of time, but this is an extremely | |
631 | rare event, and one of the other stdio_file_* routines will presumably catch | |
632 | the problem anyway. For now keep it simple and ignore the error here. */ | |
633 | return; | |
634 | } | |
635 | ||
9f7bc587 DE |
636 | /* This is written the way it is to avoid a warning from gcc about not using the |
637 | result of write (since it can be declared with attribute warn_unused_result). | |
638 | Alas casting to void doesn't work for this. */ | |
093cee7d | 639 | if (write (stdio->fd, buf, length_buf)) |
d4fb63e1 TT |
640 | { |
641 | /* Nothing. */ | |
642 | } | |
01124a23 DE |
643 | } |
644 | ||
d9fcf2fb | 645 | static void |
fba45db2 | 646 | stdio_file_fputs (const char *linebuffer, struct ui_file *file) |
d9fcf2fb | 647 | { |
19ba03f4 | 648 | struct stdio_file *stdio = (struct stdio_file *) ui_file_data (file); |
5d502164 | 649 | |
d9fcf2fb | 650 | if (stdio->magic != &stdio_file_magic) |
8e65ff28 | 651 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 652 | _("stdio_file_fputs: bad magic number")); |
bf1d7d9c JB |
653 | /* Calling error crashes when we are called from the exception framework. */ |
654 | if (fputs (linebuffer, stdio->file)) | |
d4fb63e1 TT |
655 | { |
656 | /* Nothing. */ | |
657 | } | |
d9fcf2fb JM |
658 | } |
659 | ||
660 | static int | |
fba45db2 | 661 | stdio_file_isatty (struct ui_file *file) |
d9fcf2fb | 662 | { |
19ba03f4 | 663 | struct stdio_file *stdio = (struct stdio_file *) ui_file_data (file); |
5d502164 | 664 | |
d9fcf2fb | 665 | if (stdio->magic != &stdio_file_magic) |
8e65ff28 | 666 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 667 | _("stdio_file_isatty: bad magic number")); |
01124a23 | 668 | return (isatty (stdio->fd)); |
d9fcf2fb JM |
669 | } |
670 | ||
2a9d5ccf HZ |
671 | static int |
672 | stdio_file_fseek (struct ui_file *file, long offset, int whence) | |
673 | { | |
19ba03f4 | 674 | struct stdio_file *stdio = (struct stdio_file *) ui_file_data (file); |
2a9d5ccf HZ |
675 | |
676 | if (stdio->magic != &stdio_file_magic) | |
677 | internal_error (__FILE__, __LINE__, | |
678 | _("stdio_file_fseek: bad magic number")); | |
679 | ||
680 | return fseek (stdio->file, offset, whence); | |
681 | } | |
682 | ||
ffa4ac95 YQ |
683 | #ifdef __MINGW32__ |
684 | /* This is the implementation of ui_file method to_write for stderr. | |
685 | gdb_stdout is flushed before writing to gdb_stderr. */ | |
686 | ||
687 | static void | |
688 | stderr_file_write (struct ui_file *file, const char *buf, long length_buf) | |
689 | { | |
690 | gdb_flush (gdb_stdout); | |
691 | stdio_file_write (file, buf, length_buf); | |
692 | } | |
693 | ||
694 | /* This is the implementation of ui_file method to_fputs for stderr. | |
695 | gdb_stdout is flushed before writing to gdb_stderr. */ | |
696 | ||
697 | static void | |
698 | stderr_file_fputs (const char *linebuffer, struct ui_file *file) | |
699 | { | |
700 | gdb_flush (gdb_stdout); | |
701 | stdio_file_fputs (linebuffer, file); | |
702 | } | |
703 | #endif | |
704 | ||
705 | struct ui_file * | |
694ec099 | 706 | stderr_fileopen (FILE *stream) |
ffa4ac95 | 707 | { |
694ec099 | 708 | struct ui_file *ui_file = stdio_fileopen (stream); |
ffa4ac95 YQ |
709 | |
710 | #ifdef __MINGW32__ | |
711 | /* There is no real line-buffering on Windows, see | |
712 | http://msdn.microsoft.com/en-us/library/86cebhfs%28v=vs.71%29.aspx | |
713 | so the stdout is either fully-buffered or non-buffered. We can't | |
714 | make stdout non-buffered, because of two concerns, | |
715 | 1. non-buffering hurts performance, | |
716 | 2. non-buffering may change GDB's behavior when it is interacting | |
717 | with front-end, such as Emacs. | |
718 | ||
719 | We decided to leave stdout as fully buffered, but flush it first | |
720 | when something is written to stderr. */ | |
721 | ||
722 | /* Method 'to_write_async_safe' is not overwritten, because there's | |
723 | no way to flush a stream in an async-safe manner. Fortunately, | |
724 | it doesn't really matter, because: | |
725 | - that method is only used for printing internal debug output | |
726 | from signal handlers. | |
727 | - Windows hosts don't have a concept of async-safeness. Signal | |
728 | handlers run in a separate thread, so they can call | |
729 | the regular non-async-safe output routines freely. */ | |
730 | set_ui_file_write (ui_file, stderr_file_write); | |
731 | set_ui_file_fputs (ui_file, stderr_file_fputs); | |
732 | #endif | |
733 | ||
734 | return ui_file; | |
735 | } | |
736 | ||
581e13c1 | 737 | /* Like fdopen(). Create a ui_file from a previously opened FILE. */ |
d9fcf2fb JM |
738 | |
739 | struct ui_file * | |
fba45db2 | 740 | stdio_fileopen (FILE *file) |
d9fcf2fb JM |
741 | { |
742 | return stdio_file_new (file, 0); | |
743 | } | |
744 | ||
745 | struct ui_file * | |
23b3a2c3 | 746 | gdb_fopen (const char *name, const char *mode) |
d9fcf2fb | 747 | { |
614c279d | 748 | FILE *f = gdb_fopen_cloexec (name, mode); |
5d502164 | 749 | |
d9fcf2fb JM |
750 | if (f == NULL) |
751 | return NULL; | |
752 | return stdio_file_new (f, 1); | |
753 | } | |
e4c242d9 DJ |
754 | |
755 | /* ``struct ui_file'' implementation that maps onto two ui-file objects. */ | |
756 | ||
757 | static ui_file_write_ftype tee_file_write; | |
758 | static ui_file_fputs_ftype tee_file_fputs; | |
759 | static ui_file_isatty_ftype tee_file_isatty; | |
760 | static ui_file_delete_ftype tee_file_delete; | |
761 | static ui_file_flush_ftype tee_file_flush; | |
762 | ||
763 | static int tee_file_magic; | |
764 | ||
765 | struct tee_file | |
766 | { | |
767 | int *magic; | |
768 | struct ui_file *one, *two; | |
769 | int close_one, close_two; | |
770 | }; | |
771 | ||
772 | struct ui_file * | |
773 | tee_file_new (struct ui_file *one, int close_one, | |
774 | struct ui_file *two, int close_two) | |
775 | { | |
776 | struct ui_file *ui_file = ui_file_new (); | |
8d749320 | 777 | struct tee_file *tee = XNEW (struct tee_file); |
5d502164 | 778 | |
e4c242d9 DJ |
779 | tee->magic = &tee_file_magic; |
780 | tee->one = one; | |
781 | tee->two = two; | |
782 | tee->close_one = close_one; | |
783 | tee->close_two = close_two; | |
784 | set_ui_file_data (ui_file, tee, tee_file_delete); | |
785 | set_ui_file_flush (ui_file, tee_file_flush); | |
786 | set_ui_file_write (ui_file, tee_file_write); | |
787 | set_ui_file_fputs (ui_file, tee_file_fputs); | |
788 | set_ui_file_isatty (ui_file, tee_file_isatty); | |
789 | return ui_file; | |
790 | } | |
791 | ||
792 | static void | |
793 | tee_file_delete (struct ui_file *file) | |
794 | { | |
19ba03f4 | 795 | struct tee_file *tee = (struct tee_file *) ui_file_data (file); |
5d502164 | 796 | |
e4c242d9 DJ |
797 | if (tee->magic != &tee_file_magic) |
798 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 799 | _("tee_file_delete: bad magic number")); |
e4c242d9 DJ |
800 | if (tee->close_one) |
801 | ui_file_delete (tee->one); | |
802 | if (tee->close_two) | |
803 | ui_file_delete (tee->two); | |
804 | ||
805 | xfree (tee); | |
806 | } | |
807 | ||
808 | static void | |
809 | tee_file_flush (struct ui_file *file) | |
810 | { | |
19ba03f4 | 811 | struct tee_file *tee = (struct tee_file *) ui_file_data (file); |
5d502164 | 812 | |
e4c242d9 DJ |
813 | if (tee->magic != &tee_file_magic) |
814 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 815 | _("tee_file_flush: bad magic number")); |
e4c242d9 DJ |
816 | tee->one->to_flush (tee->one); |
817 | tee->two->to_flush (tee->two); | |
818 | } | |
819 | ||
820 | static void | |
821 | tee_file_write (struct ui_file *file, const char *buf, long length_buf) | |
822 | { | |
19ba03f4 | 823 | struct tee_file *tee = (struct tee_file *) ui_file_data (file); |
5d502164 | 824 | |
e4c242d9 DJ |
825 | if (tee->magic != &tee_file_magic) |
826 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 827 | _("tee_file_write: bad magic number")); |
e4c242d9 DJ |
828 | ui_file_write (tee->one, buf, length_buf); |
829 | ui_file_write (tee->two, buf, length_buf); | |
830 | } | |
831 | ||
832 | static void | |
833 | tee_file_fputs (const char *linebuffer, struct ui_file *file) | |
834 | { | |
19ba03f4 | 835 | struct tee_file *tee = (struct tee_file *) ui_file_data (file); |
5d502164 | 836 | |
e4c242d9 DJ |
837 | if (tee->magic != &tee_file_magic) |
838 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 839 | _("tee_file_fputs: bad magic number")); |
e4c242d9 DJ |
840 | tee->one->to_fputs (linebuffer, tee->one); |
841 | tee->two->to_fputs (linebuffer, tee->two); | |
842 | } | |
843 | ||
844 | static int | |
845 | tee_file_isatty (struct ui_file *file) | |
846 | { | |
19ba03f4 | 847 | struct tee_file *tee = (struct tee_file *) ui_file_data (file); |
5d502164 | 848 | |
e4c242d9 DJ |
849 | if (tee->magic != &tee_file_magic) |
850 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 851 | _("tee_file_isatty: bad magic number")); |
172240dd PA |
852 | |
853 | return ui_file_isatty (tee->one); | |
e4c242d9 | 854 | } |