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Diffstat (limited to 'source4/lib/readline.c')
| -rw-r--r-- | source4/lib/readline.c | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/source4/lib/readline.c b/source4/lib/readline.c new file mode 100644 index 0000000000..c5da88b3e0 --- /dev/null +++ b/source4/lib/readline.c @@ -0,0 +1,159 @@ +/* + 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; +} |