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authorJelmer Vernooij <jelmer@samba.org>2006-05-03 09:07:38 +0000
committerGerald (Jerry) Carter <jerry@samba.org>2007-10-10 14:05:33 -0500
commit72a5cbadc1498b58bc7873a450de4b50e322a676 (patch)
tree6f369b9d1ff46e0c7b662873e9aea697bb14635b /source4/lib/smbreadline
parent9177f9cf0961468342dded643be535fc427d2667 (diff)
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r15406: Move 'smbreadline' out of libreplace as it doesn't replace functionality
not available on some platforms but is a Samba-specific library. (This used to be commit e9d3660fa6678424e5159708a1aa572824926c8e)
Diffstat (limited to 'source4/lib/smbreadline')
-rw-r--r--source4/lib/smbreadline/readline.m481
-rw-r--r--source4/lib/smbreadline/smbreadline.c164
-rw-r--r--source4/lib/smbreadline/smbreadline.h9
3 files changed, 254 insertions, 0 deletions
diff --git a/source4/lib/smbreadline/readline.m4 b/source4/lib/smbreadline/readline.m4
new file mode 100644
index 0000000000..cff7ece126
--- /dev/null
+++ b/source4/lib/smbreadline/readline.m4
@@ -0,0 +1,81 @@
+###############################################
+# Readline included by default unless explicitly asked not to
+test "${with_readline+set}" != "set" && with_readline=yes
+
+EXTERNAL_READLINE=no
+# test for where we get readline() from
+AC_MSG_CHECKING(whether to use readline)
+AC_ARG_WITH(readline,
+[ --with-readline[=DIR] Look for readline include/libs in DIR (default=auto) ],
+[ case "$with_readline" in
+ yes)
+ AC_MSG_RESULT(yes)
+
+ AC_CHECK_HEADERS(readline.h history.h readline/readline.h)
+ AC_CHECK_HEADERS(readline/history.h)
+
+ AC_CHECK_HEADERS(readline.h readline/readline.h,[
+ for termlib in ncurses curses termcap terminfo termlib tinfo; do
+ AC_CHECK_LIB(${termlib}, tgetent, [TERMLIBS="-l${termlib}"; break])
+ done
+ AC_CHECK_LIB(readline, rl_callback_handler_install,
+ [TERMLIBS="-lreadline $TERMLIBS"
+ EXTERNAL_READLINE=yes
+ break], [TERMLIBS=], $TERMLIBS)])
+ ;;
+ no)
+ AC_MSG_RESULT(no)
+ ;;
+ *)
+ AC_MSG_RESULT(yes)
+
+ # Needed for AC_CHECK_HEADERS and AC_CHECK_LIB to look at
+ # alternate readline path
+ _ldflags=${LDFLAGS}
+ _cppflags=${CPPFLAGS}
+
+ # Add additional search path
+ LDFLAGS="-L$with_readline/lib $LDFLAGS"
+ CPPFLAGS="-I$with_readline/include $CPPFLAGS"
+
+ AC_CHECK_HEADERS(readline.h history.h readline/readline.h)
+ AC_CHECK_HEADERS(readline/history.h)
+
+ AC_CHECK_HEADERS(readline.h readline/readline.h,[
+ for termlib in ncurses curses termcap terminfo termlib; do
+ AC_CHECK_LIB(${termlib}, tgetent, [TERMLIBS="-l${termlib}"; break])
+ done
+ AC_CHECK_LIB(readline, rl_callback_handler_install,
+ [TERMLDFLAGS="-L$with_readline/lib"
+ TERMCPPFLAGS="-I$with_readline/include"
+ LDFLAGS="-L$with_readline/lib $LDFLAGS"
+ CPPFLAGS="-I$with_readline/include $CPPFLAGS"
+ TERMLIBS="-lreadline $TERMLIBS"
+ EXTERNAL_READLINE=yes
+ break], [TERMLIBS= CPPFLAGS=$_cppflags], $TERMLIBS)])
+
+ ;;
+ esac],
+ AC_MSG_RESULT(no)
+)
+
+# The readline API changed slightly from readline3 to readline4, so
+# code will generate warnings on one of them unless we have a few
+# special cases.
+AC_CHECK_LIB(readline, rl_completion_matches,
+ [AC_DEFINE(HAVE_NEW_LIBREADLINE, 1,
+ [Do we have rl_completion_matches?])],
+ [],
+ [$TERMLIBS])
+
+AC_MSG_CHECKING(whether to use extern readline)
+if test x"$EXTERNAL_READLINE" = x"yes"; then
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_LIBREADLINE,1,[Whether the system has readline])
+ SMB_SUBSYSTEM(SMBREADLINE, [lib/smbreadline/smbreadline.o], [READLINE])
+ SMB_EXT_LIB(READLINE, [${TERMLIBS}])
+ SMB_ENABLE(READLINE,YES)
+else
+ SMB_SUBSYSTEM(SMBREADLINE, [lib/smbreadline/smbreadline.o], [])
+ AC_MSG_RESULT(no)
+fi
diff --git a/source4/lib/smbreadline/smbreadline.c b/source4/lib/smbreadline/smbreadline.c
new file mode 100644
index 0000000000..78febf5000
--- /dev/null
+++ b/source4/lib/smbreadline/smbreadline.c
@@ -0,0 +1,164 @@
+/*
+ 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"
+#include "pstring.h"
+
+#include <unistd.h>
+#include "system/readline.h"
+
+/*******************************************************************
+ Similar to sys_select() but catch EINTR and continue.
+ This is what sys_select() used to do in Samba.
+********************************************************************/
+
+int sys_select_intr(int maxfd, fd_set *readfds, fd_set *writefds, fd_set *errorfds, struct timeval *tval)
+{
+ int ret;
+ fd_set *readfds2, readfds_buf, *writefds2, writefds_buf, *errorfds2, errorfds_buf;
+ struct timeval tval2, *ptval;
+
+ readfds2 = (readfds ? &readfds_buf : NULL);
+ writefds2 = (writefds ? &writefds_buf : NULL);
+ errorfds2 = (errorfds ? &errorfds_buf : NULL);
+ ptval = (tval ? &tval2 : NULL);
+
+ do {
+ if (readfds)
+ readfds_buf = *readfds;
+ if (writefds)
+ writefds_buf = *writefds;
+ if (errorfds)
+ errorfds_buf = *errorfds;
+ if (tval)
+ tval2 = *tval;
+
+ /* We must use select and not sys_select here. If we use
+ sys_select we'd lose the fact a signal occurred when sys_select
+ read a byte from the pipe. Fix from Mark Weaver
+ <mark-clist@npsl.co.uk>
+ */
+
+ ret = select(maxfd, readfds2, writefds2, errorfds2, ptval);
+ } while (ret == -1 && errno == EINTR);
+
+ if (readfds)
+ *readfds = readfds_buf;
+ if (writefds)
+ *writefds = writefds_buf;
+ if (errorfds)
+ *errorfds = errorfds_buf;
+
+ return ret;
+}
+
+/****************************************************************************
+ 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 = STDIN_FILENO;
+ 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(STDIN_FILENO)) {
+ 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
+}
+
+
+
diff --git a/source4/lib/smbreadline/smbreadline.h b/source4/lib/smbreadline/smbreadline.h
new file mode 100644
index 0000000000..cde2b47a24
--- /dev/null
+++ b/source4/lib/smbreadline/smbreadline.h
@@ -0,0 +1,9 @@
+#ifndef __SMBREADLINE_H__
+#define __SMBREADLINE_H__
+
+char *smb_readline(const char *prompt, void (*callback)(void),
+ char **(completion_fn)(const char *text, int start, int end));
+const char *smb_readline_get_line_buffer(void);
+void smb_readline_ca_char(char c);
+
+#endif /* __SMBREADLINE_H__ */