1 /* UI_FILE - a generic STDIO like output stream.
2 Copyright (C) 1999-2014 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 3 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, see <http://www.gnu.org/licenses/>. */
21 #include "tui/tui-file.h"
22 #include "tui/tui-io.h"
28 /* A ``struct ui_file'' that is compatible with all the legacy
42 enum streamtype ts_streamtype;
48 static ui_file_flush_ftype tui_file_flush;
49 extern ui_file_fputs_ftype tui_file_fputs;
50 static ui_file_isatty_ftype tui_file_isatty;
51 static ui_file_rewind_ftype tui_file_rewind;
52 static ui_file_put_ftype tui_file_put;
53 static ui_file_delete_ftype tui_file_delete;
54 static struct ui_file *tui_file_new (void);
55 static int tui_file_magic;
57 static struct ui_file *
60 struct tui_stream *tui = XMALLOC (struct tui_stream);
61 struct ui_file *file = ui_file_new ();
63 set_ui_file_data (file, tui, tui_file_delete);
64 set_ui_file_flush (file, tui_file_flush);
65 set_ui_file_fputs (file, tui_file_fputs);
66 set_ui_file_isatty (file, tui_file_isatty);
67 set_ui_file_rewind (file, tui_file_rewind);
68 set_ui_file_put (file, tui_file_put);
69 tui->ts_magic = &tui_file_magic;
74 tui_file_delete (struct ui_file *file)
76 struct tui_stream *tmpstream = ui_file_data (file);
78 if (tmpstream->ts_magic != &tui_file_magic)
79 internal_error (__FILE__, __LINE__,
80 _("tui_file_delete: bad magic number"));
81 if ((tmpstream->ts_streamtype == astring)
82 && (tmpstream->ts_strbuf != NULL))
84 xfree (tmpstream->ts_strbuf);
90 tui_fileopen (FILE *stream)
92 struct ui_file *file = tui_file_new ();
93 struct tui_stream *tmpstream = ui_file_data (file);
95 tmpstream->ts_streamtype = afile;
96 tmpstream->ts_filestream = stream;
97 tmpstream->ts_strbuf = NULL;
98 tmpstream->ts_buflen = 0;
103 tui_sfileopen (int n)
105 struct ui_file *file = tui_file_new ();
106 struct tui_stream *tmpstream = ui_file_data (file);
108 tmpstream->ts_streamtype = astring;
109 tmpstream->ts_filestream = NULL;
112 tmpstream->ts_strbuf = xmalloc ((n + 1) * sizeof (char));
113 tmpstream->ts_strbuf[0] = '\0';
116 /* Do not allocate the buffer now. The first time something is
117 printed one will be allocated by tui_file_adjust_strbuf(). */
118 tmpstream->ts_strbuf = NULL;
119 tmpstream->ts_buflen = n;
124 tui_file_isatty (struct ui_file *file)
126 struct tui_stream *stream = ui_file_data (file);
128 if (stream->ts_magic != &tui_file_magic)
129 internal_error (__FILE__, __LINE__,
130 _("tui_file_isatty: bad magic number"));
131 if (stream->ts_streamtype == afile)
132 return (isatty (fileno (stream->ts_filestream)));
138 tui_file_rewind (struct ui_file *file)
140 struct tui_stream *stream = ui_file_data (file);
142 if (stream->ts_magic != &tui_file_magic)
143 internal_error (__FILE__, __LINE__,
144 _("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);
155 if (stream->ts_magic != &tui_file_magic)
156 internal_error (__FILE__, __LINE__,
157 _("tui_file_put: bad magic number"));
158 if (stream->ts_streamtype == astring)
159 write (dest, stream->ts_strbuf, strlen (stream->ts_strbuf));
162 /* All TUI I/O sent to the *_filtered and *_unfiltered functions
163 eventually ends up here. The fputs_unfiltered_hook is primarily
164 used by GUIs to collect all output and send it to the GUI, instead
165 of the controlling terminal. Only output to gdb_stdout and
166 gdb_stderr are sent to the hook. Everything else is sent on to
167 fputs to allow file I/O to be handled appropriately. */
169 /* FIXME: Should be broken up and moved to a TUI specific file. */
172 tui_file_fputs (const char *linebuffer, struct ui_file *file)
174 struct tui_stream *stream = ui_file_data (file);
176 if (stream->ts_streamtype == astring)
178 tui_file_adjust_strbuf (strlen (linebuffer), file);
179 strcat (stream->ts_strbuf, linebuffer);
183 tui_puts (linebuffer);
188 tui_file_get_strbuf (struct ui_file *file)
190 struct tui_stream *stream = ui_file_data (file);
192 if (stream->ts_magic != &tui_file_magic)
193 internal_error (__FILE__, __LINE__,
194 _("tui_file_get_strbuf: bad magic number"));
195 return (stream->ts_strbuf);
198 /* Adjust the length of the buffer by the amount necessary to
199 accomodate appending a string of length N to the buffer
202 tui_file_adjust_strbuf (int n, struct ui_file *file)
204 struct tui_stream *stream = ui_file_data (file);
207 if (stream->ts_magic != &tui_file_magic)
208 internal_error (__FILE__, __LINE__,
209 _("tui_file_adjust_strbuf: bad magic number"));
211 if (stream->ts_streamtype != astring)
214 if (stream->ts_strbuf)
216 /* There is already a buffer allocated. */
217 non_null_chars = strlen (stream->ts_strbuf);
219 if (n > (stream->ts_buflen - non_null_chars - 1))
221 stream->ts_buflen = n + non_null_chars + 1;
222 stream->ts_strbuf = xrealloc (stream->ts_strbuf, stream->ts_buflen);
226 /* No buffer yet, so allocate one of the desired size. */
227 stream->ts_strbuf = xmalloc ((n + 1) * sizeof (char));
231 tui_file_flush (struct ui_file *file)
233 struct tui_stream *stream = ui_file_data (file);
235 if (stream->ts_magic != &tui_file_magic)
236 internal_error (__FILE__, __LINE__,
237 _("tui_file_flush: bad magic number"));
239 switch (stream->ts_streamtype)
244 fflush (stream->ts_filestream);