1 /* UI_FILE - a generic STDIO like output stream.
3 Copyright 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
5 This file is part of GDB.
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
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
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.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
22 /* Implement the ``struct ui_file'' object. */
26 #include "gdb_string.h"
28 static ui_file_isatty_ftype null_file_isatty;
29 static ui_file_write_ftype null_file_write;
30 static ui_file_fputs_ftype null_file_fputs;
31 static ui_file_flush_ftype null_file_flush;
32 static ui_file_delete_ftype null_file_delete;
33 static ui_file_rewind_ftype null_file_rewind;
34 static ui_file_put_ftype null_file_put;
39 ui_file_flush_ftype *to_flush;
40 ui_file_write_ftype *to_write;
41 ui_file_fputs_ftype *to_fputs;
42 ui_file_delete_ftype *to_delete;
43 ui_file_isatty_ftype *to_isatty;
44 ui_file_rewind_ftype *to_rewind;
45 ui_file_put_ftype *to_put;
53 struct ui_file *file = xmalloc (sizeof (struct ui_file));
54 file->magic = &ui_file_magic;
55 set_ui_file_data (file, NULL, null_file_delete);
56 set_ui_file_flush (file, null_file_flush);
57 set_ui_file_write (file, null_file_write);
58 set_ui_file_fputs (file, null_file_fputs);
59 set_ui_file_isatty (file, null_file_isatty);
60 set_ui_file_rewind (file, null_file_rewind);
61 set_ui_file_put (file, null_file_put);
66 ui_file_delete (struct ui_file *file)
68 file->to_delete (file);
73 null_file_isatty (struct ui_file *file)
79 null_file_rewind (struct ui_file *file)
85 null_file_put (struct ui_file *file,
86 ui_file_put_method_ftype *write,
93 null_file_flush (struct ui_file *file)
99 null_file_write (struct ui_file *file,
103 if (file->to_fputs == null_file_fputs)
104 /* Both the write and fputs methods are null. Discard the
109 /* The fputs method isn't null, slowly pass the write request
110 onto that. FYI, this isn't as bad as it may look - the
111 current (as of 1999-11-07) printf_* function calls fputc and
112 fputc does exactly the below. By having a write function it
113 is possible to clean up that code. */
117 for (i = 0; i < sizeof_buf; i++)
120 file->to_fputs (b, file);
127 null_file_fputs (const char *buf, struct ui_file *file)
129 if (file->to_write == null_file_write)
130 /* Both the write and fputs methods are null. Discard the
135 /* The write method was implemented, use that. */
136 file->to_write (file, buf, strlen (buf));
141 null_file_delete (struct ui_file *file)
147 ui_file_data (struct ui_file *file)
149 if (file->magic != &ui_file_magic)
150 internal_error (__FILE__, __LINE__,
151 "ui_file_data: bad magic number");
152 return file->to_data;
156 gdb_flush (struct ui_file *file)
158 file->to_flush (file);
162 ui_file_isatty (struct ui_file *file)
164 return file->to_isatty (file);
168 ui_file_rewind (struct ui_file *file)
170 file->to_rewind (file);
174 ui_file_put (struct ui_file *file,
175 ui_file_put_method_ftype *write,
178 file->to_put (file, write, dest);
182 ui_file_write (struct ui_file *file,
186 file->to_write (file, buf, length_buf);
190 fputs_unfiltered (const char *buf, struct ui_file *file)
192 file->to_fputs (buf, file);
196 set_ui_file_flush (struct ui_file *file, ui_file_flush_ftype *flush)
198 file->to_flush = flush;
202 set_ui_file_isatty (struct ui_file *file, ui_file_isatty_ftype *isatty)
204 file->to_isatty = isatty;
208 set_ui_file_rewind (struct ui_file *file, ui_file_rewind_ftype *rewind)
210 file->to_rewind = rewind;
214 set_ui_file_put (struct ui_file *file, ui_file_put_ftype *put)
220 set_ui_file_write (struct ui_file *file,
221 ui_file_write_ftype *write)
223 file->to_write = write;
227 set_ui_file_fputs (struct ui_file *file, ui_file_fputs_ftype *fputs)
229 file->to_fputs = fputs;
233 set_ui_file_data (struct ui_file *file, void *data,
234 ui_file_delete_ftype *delete)
236 file->to_data = data;
237 file->to_delete = delete;
240 /* ui_file utility function for converting a ``struct ui_file'' into
241 a memory buffer''. */
243 struct accumulated_ui_file
250 do_ui_file_xstrdup (void *context, const char *buffer, long length)
252 struct accumulated_ui_file *acc = context;
253 if (acc->buffer == NULL)
254 acc->buffer = xmalloc (length + 1);
256 acc->buffer = xrealloc (acc->buffer, acc->length + length + 1);
257 memcpy (acc->buffer + acc->length, buffer, length);
258 acc->length += length;
259 acc->buffer[acc->length] = '\0';
263 ui_file_xstrdup (struct ui_file *file,
266 struct accumulated_ui_file acc;
269 ui_file_put (file, do_ui_file_xstrdup, &acc);
270 if (acc.buffer == NULL)
271 acc.buffer = xstrdup ("");
272 *length = acc.length;
276 /* A pure memory based ``struct ui_file'' that can be used an output
277 buffer. The buffers accumulated contents are available via
288 static ui_file_rewind_ftype mem_file_rewind;
289 static ui_file_put_ftype mem_file_put;
290 static ui_file_write_ftype mem_file_write;
291 static ui_file_delete_ftype mem_file_delete;
292 static struct ui_file *mem_file_new (void);
293 static int mem_file_magic;
295 static struct ui_file *
298 struct mem_file *stream = XMALLOC (struct mem_file);
299 struct ui_file *file = ui_file_new ();
300 set_ui_file_data (file, stream, mem_file_delete);
301 set_ui_file_rewind (file, mem_file_rewind);
302 set_ui_file_put (file, mem_file_put);
303 set_ui_file_write (file, mem_file_write);
304 stream->magic = &mem_file_magic;
305 stream->buffer = NULL;
306 stream->sizeof_buffer = 0;
307 stream->length_buffer = 0;
312 mem_file_delete (struct ui_file *file)
314 struct mem_file *stream = ui_file_data (file);
315 if (stream->magic != &mem_file_magic)
316 internal_error (__FILE__, __LINE__,
317 "mem_file_delete: bad magic number");
318 if (stream->buffer != NULL)
319 xfree (stream->buffer);
326 return mem_file_new ();
330 mem_file_rewind (struct ui_file *file)
332 struct mem_file *stream = ui_file_data (file);
333 if (stream->magic != &mem_file_magic)
334 internal_error (__FILE__, __LINE__,
335 "mem_file_rewind: bad magic number");
336 stream->length_buffer = 0;
340 mem_file_put (struct ui_file *file,
341 ui_file_put_method_ftype *write,
344 struct mem_file *stream = ui_file_data (file);
345 if (stream->magic != &mem_file_magic)
346 internal_error (__FILE__, __LINE__,
347 "mem_file_put: bad magic number");
348 if (stream->length_buffer > 0)
349 write (dest, stream->buffer, stream->length_buffer);
353 mem_file_write (struct ui_file *file,
357 struct mem_file *stream = ui_file_data (file);
358 if (stream->magic != &mem_file_magic)
359 internal_error (__FILE__, __LINE__,
360 "mem_file_write: bad magic number");
361 if (stream->buffer == NULL)
363 stream->length_buffer = length_buffer;
364 stream->sizeof_buffer = length_buffer;
365 stream->buffer = xmalloc (stream->sizeof_buffer);
366 memcpy (stream->buffer, buffer, length_buffer);
370 int new_length = stream->length_buffer + length_buffer;
371 if (new_length >= stream->sizeof_buffer)
373 stream->sizeof_buffer = new_length;
374 stream->buffer = xrealloc (stream->buffer, stream->sizeof_buffer);
376 memcpy (stream->buffer + stream->length_buffer, buffer, length_buffer);
377 stream->length_buffer = new_length;
381 /* ``struct ui_file'' implementation that maps directly onto
384 static ui_file_write_ftype stdio_file_write;
385 static ui_file_fputs_ftype stdio_file_fputs;
386 static ui_file_isatty_ftype stdio_file_isatty;
387 static ui_file_delete_ftype stdio_file_delete;
388 static struct ui_file *stdio_file_new (FILE * file, int close_p);
389 static ui_file_flush_ftype stdio_file_flush;
391 static int stdio_file_magic;
400 static struct ui_file *
401 stdio_file_new (FILE *file, int close_p)
403 struct ui_file *ui_file = ui_file_new ();
404 struct stdio_file *stdio = xmalloc (sizeof (struct stdio_file));
405 stdio->magic = &stdio_file_magic;
407 stdio->close_p = close_p;
408 set_ui_file_data (ui_file, stdio, stdio_file_delete);
409 set_ui_file_flush (ui_file, stdio_file_flush);
410 set_ui_file_write (ui_file, stdio_file_write);
411 set_ui_file_fputs (ui_file, stdio_file_fputs);
412 set_ui_file_isatty (ui_file, stdio_file_isatty);
417 stdio_file_delete (struct ui_file *file)
419 struct stdio_file *stdio = ui_file_data (file);
420 if (stdio->magic != &stdio_file_magic)
421 internal_error (__FILE__, __LINE__,
422 "stdio_file_delete: bad magic number");
425 fclose (stdio->file);
431 stdio_file_flush (struct ui_file *file)
433 struct stdio_file *stdio = ui_file_data (file);
434 if (stdio->magic != &stdio_file_magic)
435 internal_error (__FILE__, __LINE__,
436 "stdio_file_flush: bad magic number");
437 fflush (stdio->file);
441 stdio_file_write (struct ui_file *file, const char *buf, long length_buf)
443 struct stdio_file *stdio = ui_file_data (file);
444 if (stdio->magic != &stdio_file_magic)
445 internal_error (__FILE__, __LINE__,
446 "stdio_file_write: bad magic number");
447 fwrite (buf, length_buf, 1, stdio->file);
451 stdio_file_fputs (const char *linebuffer, struct ui_file *file)
453 struct stdio_file *stdio = ui_file_data (file);
454 if (stdio->magic != &stdio_file_magic)
455 internal_error (__FILE__, __LINE__,
456 "stdio_file_fputs: bad magic number");
457 fputs (linebuffer, stdio->file);
461 stdio_file_isatty (struct ui_file *file)
463 struct stdio_file *stdio = ui_file_data (file);
464 if (stdio->magic != &stdio_file_magic)
465 internal_error (__FILE__, __LINE__,
466 "stdio_file_isatty: bad magic number");
467 return (isatty (fileno (stdio->file)));
470 /* Like fdopen(). Create a ui_file from a previously opened FILE. */
473 stdio_fileopen (FILE *file)
475 return stdio_file_new (file, 0);
479 gdb_fopen (char *name, char *mode)
481 FILE *f = fopen (name, mode);
484 return stdio_file_new (f, 1);
487 /* ``struct ui_file'' implementation that maps onto two ui-file objects. */
489 static ui_file_write_ftype tee_file_write;
490 static ui_file_fputs_ftype tee_file_fputs;
491 static ui_file_isatty_ftype tee_file_isatty;
492 static ui_file_delete_ftype tee_file_delete;
493 static ui_file_flush_ftype tee_file_flush;
495 static int tee_file_magic;
500 struct ui_file *one, *two;
501 int close_one, close_two;
505 tee_file_new (struct ui_file *one, int close_one,
506 struct ui_file *two, int close_two)
508 struct ui_file *ui_file = ui_file_new ();
509 struct tee_file *tee = xmalloc (sizeof (struct tee_file));
510 tee->magic = &tee_file_magic;
513 tee->close_one = close_one;
514 tee->close_two = close_two;
515 set_ui_file_data (ui_file, tee, tee_file_delete);
516 set_ui_file_flush (ui_file, tee_file_flush);
517 set_ui_file_write (ui_file, tee_file_write);
518 set_ui_file_fputs (ui_file, tee_file_fputs);
519 set_ui_file_isatty (ui_file, tee_file_isatty);
524 tee_file_delete (struct ui_file *file)
526 struct tee_file *tee = ui_file_data (file);
527 if (tee->magic != &tee_file_magic)
528 internal_error (__FILE__, __LINE__,
529 "tee_file_delete: bad magic number");
531 ui_file_delete (tee->one);
533 ui_file_delete (tee->two);
539 tee_file_flush (struct ui_file *file)
541 struct tee_file *tee = ui_file_data (file);
542 if (tee->magic != &tee_file_magic)
543 internal_error (__FILE__, __LINE__,
544 "tee_file_flush: bad magic number");
545 tee->one->to_flush (tee->one);
546 tee->two->to_flush (tee->two);
550 tee_file_write (struct ui_file *file, const char *buf, long length_buf)
552 struct tee_file *tee = ui_file_data (file);
553 if (tee->magic != &tee_file_magic)
554 internal_error (__FILE__, __LINE__,
555 "tee_file_write: bad magic number");
556 ui_file_write (tee->one, buf, length_buf);
557 ui_file_write (tee->two, buf, length_buf);
561 tee_file_fputs (const char *linebuffer, struct ui_file *file)
563 struct tee_file *tee = ui_file_data (file);
564 if (tee->magic != &tee_file_magic)
565 internal_error (__FILE__, __LINE__,
566 "tee_file_fputs: bad magic number");
567 tee->one->to_fputs (linebuffer, tee->one);
568 tee->two->to_fputs (linebuffer, tee->two);
572 tee_file_isatty (struct ui_file *file)
574 struct tee_file *tee = ui_file_data (file);
575 if (tee->magic != &tee_file_magic)
576 internal_error (__FILE__, __LINE__,
577 "tee_file_isatty: bad magic number");