1 /* UI_FILE - a generic STDIO like output stream.
2 Copyright (C) 1999, 2000, 2001, 2007, 2008, 2009, 2010
3 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 3 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, see <http://www.gnu.org/licenses/>. */
22 #include "tui/tui-file.h"
23 #include "tui/tui-io.h"
27 #include "gdb_string.h"
29 /* A ``struct ui_file'' that is compatible with all the legacy
43 enum streamtype ts_streamtype
;
49 static ui_file_flush_ftype tui_file_flush
;
50 extern ui_file_fputs_ftype tui_file_fputs
;
51 static ui_file_isatty_ftype tui_file_isatty
;
52 static ui_file_rewind_ftype tui_file_rewind
;
53 static ui_file_put_ftype tui_file_put
;
54 static ui_file_delete_ftype tui_file_delete
;
55 static struct ui_file
*tui_file_new (void);
56 static int tui_file_magic
;
58 static struct ui_file
*
61 struct tui_stream
*tui
= XMALLOC (struct tui_stream
);
62 struct ui_file
*file
= ui_file_new ();
64 set_ui_file_data (file
, tui
, tui_file_delete
);
65 set_ui_file_flush (file
, tui_file_flush
);
66 set_ui_file_fputs (file
, tui_file_fputs
);
67 set_ui_file_isatty (file
, tui_file_isatty
);
68 set_ui_file_rewind (file
, tui_file_rewind
);
69 set_ui_file_put (file
, tui_file_put
);
70 tui
->ts_magic
= &tui_file_magic
;
75 tui_file_delete (struct ui_file
*file
)
77 struct tui_stream
*tmpstream
= ui_file_data (file
);
79 if (tmpstream
->ts_magic
!= &tui_file_magic
)
80 internal_error (__FILE__
, __LINE__
,
81 _("tui_file_delete: bad magic number"));
82 if ((tmpstream
->ts_streamtype
== astring
)
83 && (tmpstream
->ts_strbuf
!= NULL
))
85 xfree (tmpstream
->ts_strbuf
);
91 tui_fileopen (FILE *stream
)
93 struct ui_file
*file
= tui_file_new ();
94 struct tui_stream
*tmpstream
= ui_file_data (file
);
96 tmpstream
->ts_streamtype
= afile
;
97 tmpstream
->ts_filestream
= stream
;
98 tmpstream
->ts_strbuf
= NULL
;
99 tmpstream
->ts_buflen
= 0;
104 tui_sfileopen (int n
)
106 struct ui_file
*file
= tui_file_new ();
107 struct tui_stream
*tmpstream
= ui_file_data (file
);
109 tmpstream
->ts_streamtype
= astring
;
110 tmpstream
->ts_filestream
= NULL
;
113 tmpstream
->ts_strbuf
= xmalloc ((n
+ 1) * sizeof (char));
114 tmpstream
->ts_strbuf
[0] = '\0';
117 /* Do not allocate the buffer now. The first time something is
118 printed one will be allocated by tui_file_adjust_strbuf(). */
119 tmpstream
->ts_strbuf
= NULL
;
120 tmpstream
->ts_buflen
= n
;
125 tui_file_isatty (struct ui_file
*file
)
127 struct tui_stream
*stream
= ui_file_data (file
);
129 if (stream
->ts_magic
!= &tui_file_magic
)
130 internal_error (__FILE__
, __LINE__
,
131 _("tui_file_isatty: bad magic number"));
132 if (stream
->ts_streamtype
== afile
)
133 return (isatty (fileno (stream
->ts_filestream
)));
139 tui_file_rewind (struct ui_file
*file
)
141 struct tui_stream
*stream
= ui_file_data (file
);
143 if (stream
->ts_magic
!= &tui_file_magic
)
144 internal_error (__FILE__
, __LINE__
,
145 _("tui_file_rewind: bad magic number"));
146 stream
->ts_strbuf
[0] = '\0';
150 tui_file_put (struct ui_file
*file
,
151 ui_file_put_method_ftype
*write
,
154 struct tui_stream
*stream
= ui_file_data (file
);
156 if (stream
->ts_magic
!= &tui_file_magic
)
157 internal_error (__FILE__
, __LINE__
,
158 _("tui_file_put: bad magic number"));
159 if (stream
->ts_streamtype
== astring
)
160 write (dest
, stream
->ts_strbuf
, strlen (stream
->ts_strbuf
));
163 /* All TUI I/O sent to the *_filtered and *_unfiltered functions
164 eventually ends up here. The fputs_unfiltered_hook is primarily
165 used by GUIs to collect all output and send it to the GUI, instead
166 of the controlling terminal. Only output to gdb_stdout and
167 gdb_stderr are sent to the hook. Everything else is sent on to
168 fputs to allow file I/O to be handled appropriately. */
170 /* FIXME: Should be broken up and moved to a TUI specific file. */
173 tui_file_fputs (const char *linebuffer
, struct ui_file
*file
)
175 struct tui_stream
*stream
= ui_file_data (file
);
177 if (stream
->ts_streamtype
== astring
)
179 tui_file_adjust_strbuf (strlen (linebuffer
), file
);
180 strcat (stream
->ts_strbuf
, linebuffer
);
184 tui_puts (linebuffer
);
189 tui_file_get_strbuf (struct ui_file
*file
)
191 struct tui_stream
*stream
= ui_file_data (file
);
193 if (stream
->ts_magic
!= &tui_file_magic
)
194 internal_error (__FILE__
, __LINE__
,
195 _("tui_file_get_strbuf: bad magic number"));
196 return (stream
->ts_strbuf
);
199 /* Adjust the length of the buffer by the amount necessary to
200 accomodate appending a string of length N to the buffer
203 tui_file_adjust_strbuf (int n
, struct ui_file
*file
)
205 struct tui_stream
*stream
= ui_file_data (file
);
208 if (stream
->ts_magic
!= &tui_file_magic
)
209 internal_error (__FILE__
, __LINE__
,
210 _("tui_file_adjust_strbuf: bad magic number"));
212 if (stream
->ts_streamtype
!= astring
)
215 if (stream
->ts_strbuf
)
217 /* There is already a buffer allocated. */
218 non_null_chars
= strlen (stream
->ts_strbuf
);
220 if (n
> (stream
->ts_buflen
- non_null_chars
- 1))
222 stream
->ts_buflen
= n
+ non_null_chars
+ 1;
223 stream
->ts_strbuf
= xrealloc (stream
->ts_strbuf
, stream
->ts_buflen
);
227 /* No buffer yet, so allocate one of the desired size. */
228 stream
->ts_strbuf
= xmalloc ((n
+ 1) * sizeof (char));
232 tui_file_flush (struct ui_file
*file
)
234 struct tui_stream
*stream
= ui_file_data (file
);
236 if (stream
->ts_magic
!= &tui_file_magic
)
237 internal_error (__FILE__
, __LINE__
,
238 _("tui_file_flush: bad magic number"));
240 switch (stream
->ts_streamtype
)
245 fflush (stream
->ts_filestream
);