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/*
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"
#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
#ifdef HAVE_NEW_LIBREADLINE
# define RL_COMPLETION_CAST (rl_completion_func_t *)
#else
/* This type is missing from libreadline<4.0 (approximately) */
# define RL_COMPLETION_CAST
#endif /* HAVE_NEW_LIBREADLINE */
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))
{
fd_set fds;
char *line = NULL;
struct timeval timeout;
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 *)SMB_MALLOC(BUFSIZ);
if (!line) {
return NULL;
}
while (!smb_rl_done) {
timeout.tv_sec = 5;
timeout.tv_usec = 0;
if (fd < 0 || fd >= FD_SETSIZE) {
errno = EBADF;
break;
}
FD_ZERO(&fds);
FD_SET(fd,&fds);
if (sys_select_intr(fd+1,&fds,NULL,NULL,&timeout) == 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 = (Function *)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
}
/****************************************************************************
history
****************************************************************************/
int cmd_history(void)
{
#if defined(HAVE_LIBREADLINE) && defined(HAVE_HISTORY_LIST)
HIST_ENTRY **hlist;
int i;
hlist = history_list();
for (i = 0; hlist && hlist[i]; i++) {
DEBUG(0, ("%d: %s\n", i, hlist[i]->line));
}
#else
DEBUG(0,("no history without readline support\n"));
#endif
return 0;
}
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