gdb/
[deliverable/binutils-gdb.git] / gdb / ui-file.h
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1/* UI_FILE - a generic STDIO like output stream.
2 Copyright (C) 1999, 2000, 2007, 2008, 2009, 2010, 2011
3 Free Software Foundation, Inc.
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
9 the Free Software Foundation; either version 3 of the License, or
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
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
19
20#ifndef UI_FILE_H
21#define UI_FILE_H
22
23struct obstack;
24struct ui_file;
25
26/* Create a generic ui_file object with null methods. */
27
28extern struct ui_file *ui_file_new (void);
29
30/* Override methods used by specific implementations of a UI_FILE
31 object. */
32
33typedef void (ui_file_flush_ftype) (struct ui_file *stream);
34extern void set_ui_file_flush (struct ui_file *stream,
35 ui_file_flush_ftype *flush);
36
37/* NOTE: Both fputs and write methods are available. Default
38 implementations that mapping one onto the other are included. */
39typedef void (ui_file_write_ftype) (struct ui_file *stream,
40 const char *buf, long length_buf);
41extern void set_ui_file_write (struct ui_file *stream,
42 ui_file_write_ftype *fputs);
43
44typedef void (ui_file_fputs_ftype) (const char *, struct ui_file *stream);
45extern void set_ui_file_fputs (struct ui_file *stream,
46 ui_file_fputs_ftype *fputs);
47
48typedef long (ui_file_read_ftype) (struct ui_file *stream,
49 char *buf, long length_buf);
50extern void set_ui_file_read (struct ui_file *stream,
51 ui_file_read_ftype *fread);
52
53typedef int (ui_file_isatty_ftype) (struct ui_file *stream);
54extern void set_ui_file_isatty (struct ui_file *stream,
55 ui_file_isatty_ftype *isatty);
56
57typedef void (ui_file_rewind_ftype) (struct ui_file *stream);
58extern void set_ui_file_rewind (struct ui_file *stream,
59 ui_file_rewind_ftype *rewind);
60
61typedef void (ui_file_put_method_ftype) (void *object, const char *buffer,
62 long length_buffer);
63typedef void (ui_file_put_ftype) (struct ui_file *stream,
64 ui_file_put_method_ftype *method,
65 void *context);
66extern void set_ui_file_put (struct ui_file *stream, ui_file_put_ftype *put);
67
68typedef void (ui_file_delete_ftype) (struct ui_file * stream);
69extern void set_ui_file_data (struct ui_file *stream, void *data,
70 ui_file_delete_ftype *delete);
71
72extern void *ui_file_data (struct ui_file *file);
73
74
75extern void gdb_flush (struct ui_file *);
76
77extern void ui_file_delete (struct ui_file *stream);
78
79extern void ui_file_rewind (struct ui_file *stream);
80
81extern int ui_file_isatty (struct ui_file *);
82
83extern void ui_file_write (struct ui_file *file, const char *buf,
84 long length_buf);
85
86/* NOTE: copies left to right. */
87extern void ui_file_put (struct ui_file *src,
88 ui_file_put_method_ftype *write, void *dest);
89
90/* Returns a freshly allocated buffer containing the entire contents
91 of FILE (as determined by ui_file_put()) with a NUL character
92 appended. LENGTH, if not NULL, is set to the size of the buffer
93 minus that appended NUL. */
94extern char *ui_file_xstrdup (struct ui_file *file, long *length);
95
96/* Similar to ui_file_xstrdup, but return a new string allocated on
97 OBSTACK. */
98extern char *ui_file_obsavestring (struct ui_file *file,
99 struct obstack *obstack, long *length);
100
101extern long ui_file_read (struct ui_file *file, char *buf, long length_buf);
102
103/* Create/open a memory based file. Can be used as a scratch buffer
104 for collecting output. */
105extern struct ui_file *mem_fileopen (void);
106
107
108
109/* Open/create a an STDIO based UI_FILE using the already open FILE. */
110extern struct ui_file *stdio_fileopen (FILE *file);
111
112/* Open NAME returning an STDIO based UI_FILE. */
113extern struct ui_file *gdb_fopen (char *name, char *mode);
114
115/* Create a file which writes to both ONE and TWO. CLOSE_ONE
116 and CLOSE_TWO indicate whether the original files should be
117 closed when the new file is closed. */
118struct ui_file *tee_file_new (struct ui_file *one,
119 int close_one,
120 struct ui_file *two,
121 int close_two);
122#endif
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