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samba-mirror/libcli/smbreadline/smbreadline.c
Gustavo Zacarias 29d779c702 smbreadline: switch to new-style readline typedef
Function, CPFunction, CPPFunction and VFunction typedefs are considered
old-style (deprecated) starting from readline 4.2 (circa 2001).
Compatibility typedefs have been in place up to readline 6.2 but were
removed with the 6.3 release thus causing builds to break.
Switch to the new-style specific prototyped typedef.

Return value is unused so the callback should still be void (see
readline/input.c around line 456 in version 6.3).

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Reviewed-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>

Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Thu Mar 13 00:21:47 CET 2014 on sn-devel-104
2014-03-13 00:21:44 +01:00

179 lines
4.5 KiB
C

/*
Unix SMB/CIFS implementation.
Samba readline wrapper implementation
Copyright (C) Simo Sorce 2001
Copyright (C) Andrew Tridgell 2001
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "../lib/util/select.h"
#include "system/filesys.h"
#include "system/select.h"
#include "system/readline.h"
#include "libcli/smbreadline/smbreadline.h"
#undef malloc
#ifdef HAVE_LIBREADLINE
# ifdef HAVE_READLINE_READLINE_H
# include <readline/readline.h>
# ifdef HAVE_READLINE_HISTORY_H
# include <readline/history.h>
# endif
# else
# ifdef HAVE_READLINE_H
# include <readline.h>
# ifdef HAVE_HISTORY_H
# include <history.h>
# endif
# else
# undef HAVE_LIBREADLINE
# endif
# endif
#endif
static bool smb_rl_done;
#if HAVE_LIBREADLINE
/*
* MacOS/X does not have rl_done in readline.h, but
* readline.so has it
*/
extern int rl_done;
#endif
void smb_readline_done(void)
{
smb_rl_done = true;
#if HAVE_LIBREADLINE
rl_done = 1;
#endif
}
/****************************************************************************
Display the prompt and wait for input. Call callback() regularly
****************************************************************************/
static char *smb_readline_replacement(const char *prompt, void (*callback)(void),
char **(completion_fn)(const char *text, int start, int end))
{
char *line = NULL;
int fd = x_fileno(x_stdin);
char *ret;
/* Prompt might be NULL in non-interactive mode. */
if (prompt) {
x_fprintf(x_stdout, "%s", prompt);
x_fflush(x_stdout);
}
line = (char *)malloc(BUFSIZ);
if (!line) {
return NULL;
}
while (!smb_rl_done) {
struct pollfd pfd;
ZERO_STRUCT(pfd);
pfd.fd = fd;
pfd.events = POLLIN|POLLHUP;
if (sys_poll_intr(&pfd, 1, 5000) == 1) {
ret = x_fgets(line, BUFSIZ, x_stdin);
if (ret == 0) {
SAFE_FREE(line);
}
return ret;
}
if (callback) {
callback();
}
}
SAFE_FREE(line);
return NULL;
}
/****************************************************************************
Display the prompt and wait for input. Call callback() regularly.
****************************************************************************/
char *smb_readline(const char *prompt, void (*callback)(void),
char **(completion_fn)(const char *text, int start, int end))
{
char *ret;
bool interactive;
interactive = isatty(x_fileno(x_stdin)) || getenv("CLI_FORCE_INTERACTIVE");
if (!interactive) {
return smb_readline_replacement(NULL, callback, completion_fn);
}
#if HAVE_LIBREADLINE
/* Aargh! Readline does bizzare things with the terminal width
that mucks up expect(1). Set CLI_NO_READLINE in the environment
to force readline not to be used. */
if (getenv("CLI_NO_READLINE"))
return smb_readline_replacement(prompt, callback, completion_fn);
if (completion_fn) {
/* The callback prototype has changed slightly between
different versions of Readline, so the same function
works in all of them to date, but we get compiler
warnings in some. */
rl_attempted_completion_function = RL_COMPLETION_CAST completion_fn;
}
#if HAVE_DECL_RL_EVENT_HOOK
if (callback)
rl_event_hook = (rl_hook_func_t *)callback;
#endif
ret = readline(prompt);
if (ret && *ret)
add_history(ret);
#else
ret = smb_readline_replacement(prompt, callback, completion_fn);
#endif
return ret;
}
/****************************************************************************
* return line buffer text
****************************************************************************/
const char *smb_readline_get_line_buffer(void)
{
#if defined(HAVE_LIBREADLINE)
return rl_line_buffer;
#else
return NULL;
#endif
}
/****************************************************************************
* set completion append character
***************************************************************************/
void smb_readline_ca_char(char c)
{
#if defined(HAVE_LIBREADLINE)
rl_completion_append_character = c;
#endif
}