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-rw-r--r--source4/lib/readline.c159
1 files changed, 159 insertions, 0 deletions
diff --git a/source4/lib/readline.c b/source4/lib/readline.c
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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 2 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, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#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 */
+
+/****************************************************************************
+ 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;
+ static pstring line;
+ struct timeval timeout;
+ int fd = x_fileno(x_stdin);
+ char *ret;
+
+ do_debug("%s", prompt);
+
+ while (1) {
+ timeout.tv_sec = 5;
+ timeout.tv_usec = 0;
+
+ FD_ZERO(&fds);
+ FD_SET(fd,&fds);
+
+ if (sys_select_intr(fd+1,&fds,NULL,NULL,&timeout) == 1) {
+ ret = x_fgets(line, sizeof(line), x_stdin);
+ return ret;
+ }
+ if (callback)
+ callback();
+ }
+}
+
+/****************************************************************************
+ 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))
+{
+#if HAVE_LIBREADLINE
+ if (isatty(x_fileno(x_stdin))) {
+ char *ret;
+
+ /* 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 (callback)
+ rl_event_hook = (Function *)callback;
+ ret = readline(prompt);
+ if (ret && *ret)
+ add_history(ret);
+ return ret;
+ } else
+#endif
+ return smb_readline_replacement(prompt, callback, completion_fn);
+}
+
+/****************************************************************************
+ * 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)
+ 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;
+}