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Diffstat (limited to 'readline-4.3/callback.c')
| -rw-r--r-- | readline-4.3/callback.c | 156 |
1 files changed, 0 insertions, 156 deletions
diff --git a/readline-4.3/callback.c b/readline-4.3/callback.c deleted file mode 100644 index a8f4323..0000000 --- a/readline-4.3/callback.c +++ /dev/null @@ -1,156 +0,0 @@ -/* callback.c -- functions to use readline as an X `callback' mechanism. */ - -/* Copyright (C) 1987, 1989, 1992 Free Software Foundation, Inc. - - This file is part of the GNU Readline Library, a library for - reading lines of text with interactive input and history editing. - - The GNU Readline Library 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, or - (at your option) any later version. - - The GNU Readline Library 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. - - The GNU General Public License is often shipped with GNU software, and - is generally kept in a file called COPYING or LICENSE. If you do not - have a copy of the license, write to the Free Software Foundation, - 59 Temple Place, Suite 330, Boston, MA 02111 USA. */ -#define READLINE_LIBRARY - -#if defined (HAVE_CONFIG_H) -# include <config.h> -#endif - -#include "rlconf.h" - -#if defined (READLINE_CALLBACKS) - -#include <sys/types.h> - -#ifdef HAVE_STDLIB_H -# include <stdlib.h> -#else -# include "ansi_stdlib.h" -#endif - -#include <stdio.h> - -/* System-specific feature definitions and include files. */ -#include "rldefs.h" -#include "readline.h" -#include "rlprivate.h" - -/* **************************************************************** */ -/* */ -/* Callback Readline Functions */ -/* */ -/* **************************************************************** */ - -/* Allow using readline in situations where a program may have multiple - things to handle at once, and dispatches them via select(). Call - rl_callback_handler_install() with the prompt and a function to call - whenever a complete line of input is ready. The user must then - call rl_callback_read_char() every time some input is available, and - rl_callback_read_char() will call the user's function with the complete - text read in at each end of line. The terminal is kept prepped and - signals handled all the time, except during calls to the user's function. */ - -rl_vcpfunc_t *rl_linefunc; /* user callback function */ -static int in_handler; /* terminal_prepped and signals set? */ - -/* Make sure the terminal is set up, initialize readline, and prompt. */ -static void -_rl_callback_newline () -{ - rl_initialize (); - - if (in_handler == 0) - { - in_handler = 1; - - (*rl_prep_term_function) (_rl_meta_flag); - -#if defined (HANDLE_SIGNALS) - rl_set_signals (); -#endif - } - - readline_internal_setup (); -} - -/* Install a readline handler, set up the terminal, and issue the prompt. */ -void -rl_callback_handler_install (prompt, linefunc) - const char *prompt; - rl_vcpfunc_t *linefunc; -{ - rl_set_prompt (prompt); - rl_linefunc = linefunc; - _rl_callback_newline (); -} - -/* Read one character, and dispatch to the handler if it ends the line. */ -void -rl_callback_read_char () -{ - char *line; - int eof; - - if (rl_linefunc == NULL) - { - fprintf (stderr, "readline: readline_callback_read_char() called with no handler!\r\n"); - abort (); - } - - eof = readline_internal_char (); - - /* We loop in case some function has pushed input back with rl_execute_next. */ - for (;;) - { - if (rl_done) - { - line = readline_internal_teardown (eof); - - (*rl_deprep_term_function) (); -#if defined (HANDLE_SIGNALS) - rl_clear_signals (); -#endif - in_handler = 0; - (*rl_linefunc) (line); - - /* If the user did not clear out the line, do it for him. */ - if (rl_line_buffer[0]) - _rl_init_line_state (); - - /* Redisplay the prompt if readline_handler_{install,remove} - not called. */ - if (in_handler == 0 && rl_linefunc) - _rl_callback_newline (); - } - if (rl_pending_input) - eof = readline_internal_char (); - else - break; - } -} - -/* Remove the handler, and make sure the terminal is in its normal state. */ -void -rl_callback_handler_remove () -{ - rl_linefunc = NULL; - if (in_handler) - { - in_handler = 0; - (*rl_deprep_term_function) (); -#if defined (HANDLE_SIGNALS) - rl_clear_signals (); -#endif - } -} - -#endif |