/* 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 */ /**************************************************************************** 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 char *line; 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); } if (line == NULL) { line = (char *)SMB_MALLOC(BUFSIZ); if (!line) { return NULL; } } 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, BUFSIZ, 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)) { 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; }