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[Samba/gebeck_regimport.git] / source3 / lib / readline.c
blob8b90c32c7f9f1066c388f2c3bef10248b5b5baab
1 /*
2 Unix SMB/CIFS implementation.
3 Samba readline wrapper implementation
4 Copyright (C) Simo Sorce 2001
5 Copyright (C) Andrew Tridgell 2001
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 2 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, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 #include "includes.h"
24 #ifdef HAVE_LIBREADLINE
25 # ifdef HAVE_READLINE_READLINE_H
26 # include <readline/readline.h>
27 # ifdef HAVE_READLINE_HISTORY_H
28 # include <readline/history.h>
29 # endif
30 # else
31 # ifdef HAVE_READLINE_H
32 # include <readline.h>
33 # ifdef HAVE_HISTORY_H
34 # include <history.h>
35 # endif
36 # else
37 # undef HAVE_LIBREADLINE
38 # endif
39 # endif
40 #endif
42 #ifdef HAVE_NEW_LIBREADLINE
43 # define RL_COMPLETION_CAST (rl_completion_func_t *)
44 #else
45 /* This type is missing from libreadline<4.0 (approximately) */
46 # define RL_COMPLETION_CAST
47 #endif /* HAVE_NEW_LIBREADLINE */
49 /****************************************************************************
50 Display the prompt and wait for input. Call callback() regularly
51 ****************************************************************************/
53 static char *smb_readline_replacement(char *prompt, void (*callback)(void),
54 char **(completion_fn)(char *text, int start, int end))
56 fd_set fds;
57 static pstring line;
58 struct timeval timeout;
59 int fd = x_fileno(x_stdin);
60 char *ret;
62 x_fprintf(dbf, "%s", prompt);
63 x_fflush(dbf);
65 while (1) {
66 timeout.tv_sec = 5;
67 timeout.tv_usec = 0;
69 FD_ZERO(&fds);
70 FD_SET(fd,&fds);
72 if (sys_select_intr(fd+1,&fds,NULL,NULL,&timeout) == 1) {
73 ret = x_fgets(line, sizeof(line), x_stdin);
74 return ret;
76 if (callback)
77 callback();
81 /****************************************************************************
82 Display the prompt and wait for input. Call callback() regularly.
83 ****************************************************************************/
85 char *smb_readline(char *prompt, void (*callback)(void),
86 char **(completion_fn)(char *text, int start, int end))
88 #if HAVE_LIBREADLINE
89 if (isatty(x_fileno(x_stdin))) {
90 char *ret;
92 /* Aargh! Readline does bizzare things with the terminal width
93 that mucks up expect(1). Set CLI_NO_READLINE in the environment
94 to force readline not to be used. */
96 if (getenv("CLI_NO_READLINE"))
97 return smb_readline_replacement(prompt, callback, completion_fn);
99 if (completion_fn) {
100 /* The callback prototype has changed slightly between
101 different versions of Readline, so the same function
102 works in all of them to date, but we get compiler
103 warnings in some. */
104 rl_attempted_completion_function = RL_COMPLETION_CAST completion_fn;
107 if (callback)
108 rl_event_hook = (Function *)callback;
109 ret = readline(prompt);
110 if (ret && *ret)
111 add_history(ret);
112 return ret;
113 } else
114 #endif
115 return smb_readline_replacement(prompt, callback, completion_fn);
118 /****************************************************************************
119 history
120 ****************************************************************************/
121 int cmd_history(void)
123 #if defined(HAVE_LIBREADLINE)
124 HIST_ENTRY **hlist;
125 int i;
127 hlist = history_list();
129 for (i = 0; hlist && hlist[i]; i++) {
130 DEBUG(0, ("%d: %s\n", i, hlist[i]->line));
132 #else
133 DEBUG(0,("no history without readline support\n"));
134 #endif
136 return 0;