Line data Source code
1 : /* gpgrlhelp.c - A readline wrapper.
2 : * Copyright (C) 2006 Free Software Foundation, Inc.
3 : *
4 : * This file is part of GnuPG.
5 : *
6 : * This file is free software; you can redistribute it and/or modify
7 : * it under the terms of either
8 : *
9 : * - the GNU Lesser General Public License as published by the Free
10 : * Software Foundation; either version 3 of the License, or (at
11 : * your option) any later version.
12 : *
13 : * or
14 : *
15 : * - the GNU General Public License as published by the Free
16 : * Software Foundation; either version 2 of the License, or (at
17 : * your option) any later version.
18 : *
19 : * or both in parallel, as here.
20 : *
21 : * This file is distributed in the hope that it will be useful,
22 : * but WITHOUT ANY WARRANTY; without even the implied warranty of
23 : * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
24 : * GNU General Public License for more details.
25 : *
26 : * You should have received a copy of the GNU General Public License
27 : * along with this program; if not, see <http://www.gnu.org/licenses/>.
28 : */
29 :
30 : /* This module may by used by applications to initializes readline
31 : support. It is required so that we can have hooks in other parts
32 : of libcommon without actually requiring to link against
33 : libreadline. It works along with ttyio.c which is a proper part of
34 : libcommon. */
35 :
36 : #include <config.h>
37 : #include <stdlib.h>
38 : #include <stddef.h>
39 :
40 : #ifdef HAVE_LIBREADLINE
41 : #define GNUPG_LIBREADLINE_H_INCLUDED
42 : #include <stdio.h>
43 : #include <readline/readline.h>
44 : #include <readline/history.h>
45 : #endif
46 :
47 : #include "util.h"
48 : #include "common-defs.h"
49 :
50 :
51 : #ifdef HAVE_LIBREADLINE
52 : static void
53 0 : set_completer (rl_completion_func_t *completer)
54 : {
55 0 : rl_attempted_completion_function = completer;
56 0 : rl_inhibit_completion = 0;
57 0 : }
58 :
59 : static void
60 0 : inhibit_completion (int value)
61 : {
62 0 : rl_inhibit_completion = value;
63 0 : }
64 :
65 : static void
66 0 : cleanup_after_signal (void)
67 : {
68 0 : rl_free_line_state ();
69 0 : rl_cleanup_after_signal ();
70 0 : }
71 :
72 : static void
73 0 : init_stream (FILE *fp)
74 : {
75 0 : rl_catch_signals = 0;
76 0 : rl_instream = rl_outstream = fp;
77 0 : rl_inhibit_completion = 1;
78 0 : }
79 :
80 : #endif /*HAVE_LIBREADLINE*/
81 :
82 :
83 : /* Initialize our readline code. This should be called as early as
84 : possible as it is actually a constructur. */
85 : void
86 1914 : gnupg_rl_initialize (void)
87 : {
88 : #ifdef HAVE_LIBREADLINE
89 1914 : tty_private_set_rl_hooks (init_stream,
90 : set_completer,
91 : inhibit_completion,
92 : cleanup_after_signal,
93 : readline,
94 : add_history);
95 1914 : rl_readline_name = GNUPG_NAME;
96 : #endif
97 1914 : }
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