1 /* UI_FILE - a generic STDIO like output stream.
2 Copyright (C) 1999, 2000 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
23 #include "tui/tui-file.h"
27 /* Called instead of fputs for all TUI_FILE output. */
29 void (*fputs_unfiltered_hook) (const char *linebuffer,
30 struct ui_file * stream);
32 /* A ``struct ui_file'' that is compatible with all the legacy
46 enum streamtype ts_streamtype;
52 static ui_file_flush_ftype tui_file_flush;
53 extern ui_file_fputs_ftype tui_file_fputs;
54 static ui_file_isatty_ftype tui_file_isatty;
55 static ui_file_rewind_ftype tui_file_rewind;
56 static ui_file_put_ftype tui_file_put;
57 static ui_file_delete_ftype tui_file_delete;
58 static struct ui_file *tui_file_new PARAMS ((void));
59 static int tui_file_magic;
61 static struct ui_file *
64 struct tui_stream *tui = xmalloc (sizeof (struct tui_stream));
65 struct ui_file *file = ui_file_new ();
66 set_ui_file_data (file, tui, tui_file_delete);
67 set_ui_file_flush (file, tui_file_flush);
68 set_ui_file_fputs (file, tui_file_fputs);
69 set_ui_file_isatty (file, tui_file_isatty);
70 set_ui_file_rewind (file, tui_file_rewind);
71 set_ui_file_put (file, tui_file_put);
72 tui->ts_magic = &tui_file_magic;
77 tui_file_delete (file)
80 struct tui_stream *tmpstream = ui_file_data (file);
81 if (tmpstream->ts_magic != &tui_file_magic)
82 internal_error ("tui_file_delete: bad magic number");
83 if ((tmpstream->ts_streamtype == astring) &&
84 (tmpstream->ts_strbuf != NULL))
86 free (tmpstream->ts_strbuf);
95 struct ui_file *file = tui_file_new ();
96 struct tui_stream *tmpstream = ui_file_data (file);
97 tmpstream->ts_streamtype = afile;
98 tmpstream->ts_filestream = stream;
99 tmpstream->ts_strbuf = NULL;
100 tmpstream->ts_buflen = 0;
108 struct ui_file *file = tui_file_new ();
109 struct tui_stream *tmpstream = ui_file_data (file);
110 tmpstream->ts_streamtype = astring;
111 tmpstream->ts_filestream = NULL;
114 tmpstream->ts_strbuf = xmalloc ((n + 1) * sizeof (char));
115 tmpstream->ts_strbuf[0] = '\0';
118 /* Do not allocate the buffer now. The first time something is printed
119 one will be allocated by tui_file_adjust_strbuf() */
120 tmpstream->ts_strbuf = NULL;
121 tmpstream->ts_buflen = n;
126 tui_file_isatty (file)
127 struct ui_file *file;
129 struct tui_stream *stream = ui_file_data (file);
130 if (stream->ts_magic != &tui_file_magic)
131 internal_error ("tui_file_isatty: bad magic number");
132 if (stream->ts_streamtype == afile)
133 return (isatty (fileno (stream->ts_filestream)));
139 tui_file_rewind (file)
140 struct ui_file *file;
142 struct tui_stream *stream = ui_file_data (file);
143 if (stream->ts_magic != &tui_file_magic)
144 internal_error ("tui_file_rewind: bad magic number");
145 stream->ts_strbuf[0] = '\0';
149 tui_file_put (struct ui_file *file,
150 ui_file_put_method_ftype *write,
153 struct tui_stream *stream = ui_file_data (file);
154 if (stream->ts_magic != &tui_file_magic)
155 internal_error ("tui_file_put: bad magic number");
156 if (stream->ts_streamtype == astring)
157 write (dest, stream->ts_strbuf, strlen (stream->ts_strbuf));
160 /* All TUI I/O sent to the *_filtered and *_unfiltered functions
161 eventually ends up here. The fputs_unfiltered_hook is primarily
162 used by GUIs to collect all output and send it to the GUI, instead
163 of the controlling terminal. Only output to gdb_stdout and
164 gdb_stderr are sent to the hook. Everything else is sent on to
165 fputs to allow file I/O to be handled appropriately. */
167 /* FIXME: Should be broken up and moved to a TUI specific file. */
170 tui_file_fputs (linebuffer, file)
171 const char *linebuffer;
172 struct ui_file *file;
174 struct tui_stream *stream = ui_file_data (file);
176 extern int tui_owns_terminal;
178 /* NOTE: cagney/1999-10-13: The use of fputs_unfiltered_hook is
179 seriously discouraged. Those wanting to hook output should
180 instead implement their own ui_file object and install that. See
181 also tui_file_flush(). */
182 if (fputs_unfiltered_hook
183 && (file == gdb_stdout
184 || file == gdb_stderr))
185 fputs_unfiltered_hook (linebuffer, file);
189 if (tui_version && tui_owns_terminal)
191 /* If we get here somehow while updating the TUI (from
192 * within a tuiDo(), then we need to temporarily
193 * set up the terminal for GDB output. This probably just
194 * happens on error output.
197 if (stream->ts_streamtype == astring)
199 tui_file_adjust_strbuf (strlen (linebuffer), stream);
200 strcat (stream->ts_strbuf, linebuffer);
204 tuiTermUnsetup (0, (tui_version) ? cmdWin->detail.commandInfo.curch : 0);
205 fputs (linebuffer, stream->ts_filestream);
207 if (linebuffer[strlen (linebuffer) - 1] == '\n')
208 tuiClearCommandCharCount ();
210 tuiIncrCommandCharCountBy (strlen (linebuffer));
215 /* The normal case - just do a fputs() */
216 if (stream->ts_streamtype == astring)
218 tui_file_adjust_strbuf (strlen (linebuffer), stream);
219 strcat (stream->ts_strbuf, linebuffer);
222 fputs (linebuffer, stream->ts_filestream);
227 if (stream->ts_streamtype == astring)
229 tui_file_adjust_strbuf (strlen (linebuffer), file);
230 strcat (stream->ts_strbuf, linebuffer);
233 fputs (linebuffer, stream->ts_filestream);
239 tui_file_get_strbuf (struct ui_file *file)
241 struct tui_stream *stream = ui_file_data (file);
242 if (stream->ts_magic != &tui_file_magic)
243 internal_error ("tui_file_get_strbuf: bad magic number");
244 return (stream->ts_strbuf);
247 /* adjust the length of the buffer by the amount necessary
248 to accomodate appending a string of length N to the buffer contents */
250 tui_file_adjust_strbuf (int n, struct ui_file *file)
252 struct tui_stream *stream = ui_file_data (file);
254 if (stream->ts_magic != &tui_file_magic)
255 internal_error ("tui_file_adjust_strbuf: bad magic number");
257 if (stream->ts_streamtype != astring)
260 if (stream->ts_strbuf)
262 /* There is already a buffer allocated */
263 non_null_chars = strlen (stream->ts_strbuf);
265 if (n > (stream->ts_buflen - non_null_chars - 1))
267 stream->ts_buflen = n + non_null_chars + 1;
268 stream->ts_strbuf = xrealloc (stream->ts_strbuf, stream->ts_buflen);
272 /* No buffer yet, so allocate one of the desired size */
273 stream->ts_strbuf = xmalloc ((n + 1) * sizeof (char));
277 tui_file_flush (file)
278 struct ui_file *file;
280 struct tui_stream *stream = ui_file_data (file);
281 if (stream->ts_magic != &tui_file_magic)
282 internal_error ("tui_file_flush: bad magic number");
284 /* NOTE: cagney/1999-10-12: If we've been linked with code that uses
285 fputs_unfiltered_hook then we assume that it doesn't need to know
286 about flushes. Code that does need to know about flushes can
287 implement a proper ui_file object. */
288 if (fputs_unfiltered_hook)
291 switch (stream->ts_streamtype)
296 fflush (stream->ts_filestream);