1/* 2 Unix SMB/CIFS implementation. 3 Samba readline wrapper implementation 4 Copyright (C) Simo Sorce 2001 5 Copyright (C) Andrew Tridgell 2001 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 2 of the License, or 10 (at your option) any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program; if not, write to the Free Software 19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 20*/ 21 22#include "includes.h" 23 24#ifdef HAVE_LIBREADLINE 25# ifdef HAVE_READLINE_READLINE_H 26# include <readline/readline.h> 27# ifdef HAVE_READLINE_HISTORY_H 28# include <readline/history.h> 29# endif 30# else 31# ifdef HAVE_READLINE_H 32# include <readline.h> 33# ifdef HAVE_HISTORY_H 34# include <history.h> 35# endif 36# else 37# undef HAVE_LIBREADLINE 38# endif 39# endif 40#endif 41 42#ifdef HAVE_NEW_LIBREADLINE 43# define RL_COMPLETION_CAST (rl_completion_func_t *) 44#else 45/* This type is missing from libreadline<4.0 (approximately) */ 46# define RL_COMPLETION_CAST 47#endif /* HAVE_NEW_LIBREADLINE */ 48 49/**************************************************************************** 50 Display the prompt and wait for input. Call callback() regularly 51****************************************************************************/ 52 53static char *smb_readline_replacement(char *prompt, void (*callback)(void), 54 char **(completion_fn)(const char *text, int start, int end)) 55{ 56 fd_set fds; 57 static pstring line; 58 struct timeval timeout; 59 int fd = x_fileno(x_stdin); 60 char *ret; 61 62 x_fprintf(dbf, "%s", prompt); 63 x_fflush(dbf); 64 65 while (1) { 66 timeout.tv_sec = 5; 67 timeout.tv_usec = 0; 68 69 FD_ZERO(&fds); 70 FD_SET(fd,&fds); 71 72 if (sys_select_intr(fd+1,&fds,NULL,NULL,&timeout) == 1) { 73 ret = x_fgets(line, sizeof(line), x_stdin); 74 return ret; 75 } 76 if (callback) 77 callback(); 78 } 79} 80 81/**************************************************************************** 82 Display the prompt and wait for input. Call callback() regularly. 83****************************************************************************/ 84 85char *smb_readline(char *prompt, void (*callback)(void), 86 char **(completion_fn)(const char *text, int start, int end)) 87{ 88#if HAVE_LIBREADLINE 89 if (isatty(x_fileno(x_stdin))) { 90 char *ret; 91 92 /* Aargh! Readline does bizzare things with the terminal width 93 that mucks up expect(1). Set CLI_NO_READLINE in the environment 94 to force readline not to be used. */ 95 96 if (getenv("CLI_NO_READLINE")) 97 return smb_readline_replacement(prompt, callback, completion_fn); 98 99 if (completion_fn) { 100 /* The callback prototype has changed slightly between 101 different versions of Readline, so the same function 102 works in all of them to date, but we get compiler 103 warnings in some. */ 104 rl_attempted_completion_function = RL_COMPLETION_CAST completion_fn; 105 } 106 107 if (callback) 108 rl_event_hook = (Function *)callback; 109 ret = readline(prompt); 110 if (ret && *ret) 111 add_history(ret); 112 return ret; 113 } else 114#endif 115 return smb_readline_replacement(prompt, callback, completion_fn); 116} 117 118/**************************************************************************** 119 * return line buffer text 120 ****************************************************************************/ 121const char *smb_readline_get_line_buffer(void) 122{ 123#if defined(HAVE_LIBREADLINE) 124 return rl_line_buffer; 125#else 126 return NULL; 127#endif 128} 129 130 131/**************************************************************************** 132 * set completion append character 133 ***************************************************************************/ 134void smb_readline_ca_char(char c) 135{ 136#if defined(HAVE_LIBREADLINE) 137 rl_completion_append_character = c; 138#endif 139} 140 141/**************************************************************************** 142history 143****************************************************************************/ 144int cmd_history(void) 145{ 146#if defined(HAVE_LIBREADLINE) 147 HIST_ENTRY **hlist; 148 int i; 149 150 hlist = history_list(); 151 152 for (i = 0; hlist && hlist[i]; i++) { 153 DEBUG(0, ("%d: %s\n", i, hlist[i]->line)); 154 } 155#else 156 DEBUG(0,("no history without readline support\n")); 157#endif 158 159 return 0; 160} 161 162