diff options
Diffstat (limited to 'readline/terminal.c')
| -rw-r--r-- | readline/terminal.c | 545 |
1 files changed, 0 insertions, 545 deletions
diff --git a/readline/terminal.c b/readline/terminal.c deleted file mode 100644 index c286696..0000000 --- a/readline/terminal.c +++ /dev/null @@ -1,545 +0,0 @@ -/* terminal.c -- controlling the terminal with termcap. */ - -/* Copyright (C) 1996 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 1, 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, - 675 Mass Ave, Cambridge, MA 02139, USA. */ -#define READLINE_LIBRARY - -#if defined (HAVE_CONFIG_H) -# include <config.h> -#endif - -#include <sys/types.h> -#include "posixstat.h" -#include <fcntl.h> -#if defined (HAVE_SYS_FILE_H) -# include <sys/file.h> -#endif /* HAVE_SYS_FILE_H */ - -#if defined (HAVE_UNISTD_H) -# include <unistd.h> -#endif /* HAVE_UNISTD_H */ - -#if defined (HAVE_STDLIB_H) -# include <stdlib.h> -#else -# include "ansi_stdlib.h" -#endif /* HAVE_STDLIB_H */ - -#if defined (HAVE_LOCALE_H) -# include <locale.h> -#endif - -#include <signal.h> -#include <stdio.h> -#include <setjmp.h> - -/* System-specific feature definitions and include files. */ -#include "rldefs.h" - -#if defined (GWINSZ_IN_SYS_IOCTL) && !defined (TIOCGWINSZ) -# include <sys/ioctl.h> -#endif /* GWINSZ_IN_SYS_IOCTL && !TIOCGWINSZ */ - -#include "rltty.h" -#include "tcap.h" - -/* Some standard library routines. */ -#include "readline.h" -#include "history.h" - -/* Variables and functions imported from readline.c */ -extern FILE *_rl_in_stream, *_rl_out_stream; -extern int readline_echoing_p; -extern int _rl_bell_preference; -extern Keymap _rl_keymap; - -/* Functions imported from bind.c */ -extern void _rl_bind_if_unbound (); - -/* Functions imported from shell.c */ -extern void set_lines_and_columns (); -extern char *get_env_value (); - -/* **************************************************************** */ -/* */ -/* Terminal and Termcap */ -/* */ -/* **************************************************************** */ - -static char *term_buffer = (char *)NULL; -static char *term_string_buffer = (char *)NULL; - -static int tcap_initialized; - -/* Non-zero means this terminal can't really do anything. */ -static int dumb_term; - -#if !defined (__linux__) -# if defined (__EMX__) || defined (NEED_EXTERN_PC) -extern -# endif /* __EMX__ || NEED_EXTERN_PC */ -char PC, *BC, *UP; -#endif /* __linux__ */ - -/* Some strings to control terminal actions. These are output by tputs (). */ -char *term_goto, *term_clreol, *term_cr, *term_clrpag, *term_backspace; -char *term_pc; - -/* Non-zero if we determine that the terminal can do character insertion. */ -int terminal_can_insert = 0; - -/* How to insert characters. */ -char *term_im, *term_ei, *term_ic, *term_ip, *term_IC; - -/* How to delete characters. */ -char *term_dc, *term_DC; - -#if defined (HACK_TERMCAP_MOTION) -char *term_forward_char; -#endif /* HACK_TERMCAP_MOTION */ - -/* How to go up a line. */ -char *term_up; - -/* A visible bell, if the terminal can be made to flash the screen. */ -static char *visible_bell; - -/* Non-zero means the terminal can auto-wrap lines. */ -int _rl_term_autowrap; - -/* Non-zero means that this terminal has a meta key. */ -static int term_has_meta; - -/* The sequences to write to turn on and off the meta key, if this - terminal has one. */ -static char *term_mm, *term_mo; - -/* The key sequences output by the arrow keys, if this terminal has any. */ -static char *term_ku, *term_kd, *term_kr, *term_kl; - -/* How to initialize and reset the arrow keys, if this terminal has any. */ -static char *term_ks, *term_ke; - -/* The key sequences sent by the Home and End keys, if any. */ -static char *term_kh, *term_kH; - -/* Variables that hold the screen dimensions, used by the display code. */ -int screenwidth, screenheight, screenchars; - -/* Non-zero means the user wants to enable the keypad. */ -int _rl_enable_keypad; - -/* Non-zero means the user wants to enable a meta key. */ -int _rl_enable_meta = 1; - -/* Get readline's idea of the screen size. TTY is a file descriptor open - to the terminal. If IGNORE_ENV is true, we do not pay attention to the - values of $LINES and $COLUMNS. The tests for TERM_STRING_BUFFER being - non-null serve to check whether or not we have initialized termcap. */ -void -_rl_get_screen_size (tty, ignore_env) - int tty, ignore_env; -{ - char *ss; -#if defined (TIOCGWINSZ) - struct winsize window_size; -#endif /* TIOCGWINSZ */ -#if defined (__EMX__) - int sz[2]; -#endif - -#if defined (TIOCGWINSZ) - if (ioctl (tty, TIOCGWINSZ, &window_size) == 0) - { - screenwidth = (int) window_size.ws_col; - screenheight = (int) window_size.ws_row; - } -#endif /* TIOCGWINSZ */ - -#if defined (__EMX__) - _scrsize (sz); - screenwidth = sz[0]; - screenheight = sz[1]; -#endif - - /* Environment variable COLUMNS overrides setting of "co" if IGNORE_ENV - is unset. */ - if (screenwidth <= 0) - { - if (ignore_env == 0 && (ss = get_env_value ("COLUMNS"))) - screenwidth = atoi (ss); - - if (screenwidth <= 0 && term_string_buffer) - screenwidth = tgetnum ("co"); - } - - /* Environment variable LINES overrides setting of "li" if IGNORE_ENV - is unset. */ - if (screenheight <= 0) - { - if (ignore_env == 0 && (ss = get_env_value ("LINES"))) - screenheight = atoi (ss); - - if (screenheight <= 0 && term_string_buffer) - screenheight = tgetnum ("li"); - } - - /* If all else fails, default to 80x24 terminal. */ - if (screenwidth <= 1) - screenwidth = 80; - - if (screenheight <= 0) - screenheight = 24; - - /* If we're being compiled as part of bash, set the environment - variables $LINES and $COLUMNS to new values. Otherwise, just - do a pair of putenv () or setenv () calls. */ - set_lines_and_columns (screenheight, screenwidth); - - if (!_rl_term_autowrap) - screenwidth--; - - screenchars = screenwidth * screenheight; -} - -void -_rl_set_screen_size (rows, cols) - int rows, cols; -{ - screenheight = rows; - screenwidth = cols; - - if (_rl_term_autowrap == 0) - screenwidth--; - - screenchars = screenwidth * screenheight; -} - -struct _tc_string { - char *tc_var; - char **tc_value; -}; - -/* This should be kept sorted, just in case we decide to change the - search algorithm to something smarter. */ -static struct _tc_string tc_strings[] = -{ - "DC", &term_DC, - "IC", &term_IC, - "ce", &term_clreol, - "cl", &term_clrpag, - "cr", &term_cr, - "dc", &term_dc, - "ei", &term_ei, - "ic", &term_ic, - "im", &term_im, - "kd", &term_kd, - "kh", &term_kh, /* home */ - "kH", &term_kH, /* end */ - "kl", &term_kl, - "kr", &term_kr, - "ku", &term_ku, - "ks", &term_ks, - "ke", &term_ke, - "le", &term_backspace, - "mm", &term_mm, - "mo", &term_mo, -#if defined (HACK_TERMCAP_MOTION) - "nd", &term_forward_char, -#endif - "pc", &term_pc, - "up", &term_up, - "vb", &visible_bell, -}; - -#define NUM_TC_STRINGS (sizeof (tc_strings) / sizeof (struct _tc_string)) - -/* Read the desired terminal capability strings into BP. The capabilities - are described in the TC_STRINGS table. */ -static void -get_term_capabilities (bp) - char **bp; -{ - register int i; - - for (i = 0; i < NUM_TC_STRINGS; i++) - *(tc_strings[i].tc_value) = tgetstr (tc_strings[i].tc_var, bp); - tcap_initialized = 1; -} - -int -_rl_init_terminal_io (terminal_name) - char *terminal_name; -{ -#if defined (__GO32__) - screenwidth = ScreenCols (); - screenheight = ScreenRows (); - screenchars = screenwidth * screenheight; - term_cr = "\r"; - term_im = term_ei = term_ic = term_IC = (char *)NULL; - term_up = term_dc = term_DC = visible_bell = (char *)NULL; - - /* Does the __GO32__ have a meta key? I don't know. */ - term_has_meta = 0; - term_mm = term_mo = (char *)NULL; - - /* It probably has arrow keys, but I don't know what they are. */ - term_ku = term_kd = term_kr = term_kl = (char *)NULL; - -#if defined (HACK_TERMCAP_MOTION) - term_forward_char = (char *)NULL; -#endif /* HACK_TERMCAP_MOTION */ - terminal_can_insert = _rl_term_autowrap = 0; - return; -#else /* !__GO32__ */ - - char *term, *buffer; - int tty; - Keymap xkeymap; - - term = terminal_name ? terminal_name : get_env_value ("TERM"); - - if (term_string_buffer == 0) - term_string_buffer = xmalloc (2032); - - if (term_buffer == 0) - term_buffer = xmalloc (4080); - - buffer = term_string_buffer; - - term_clrpag = term_cr = term_clreol = (char *)NULL; - - if (term == 0) - term = "dumb"; - - if (tgetent (term_buffer, term) <= 0) - { - dumb_term = 1; - screenwidth = 79; - screenheight = 24; - screenchars = 79 * 24; - term_cr = "\r"; - term_im = term_ei = term_ic = term_IC = (char *)NULL; - term_up = term_dc = term_DC = visible_bell = (char *)NULL; - term_ku = term_kd = term_kl = term_kr = (char *)NULL; -#if defined (HACK_TERMCAP_MOTION) - term_forward_char = (char *)NULL; -#endif - terminal_can_insert = 0; - return 0; - } - - get_term_capabilities (&buffer); - - /* Set up the variables that the termcap library expects the application - to provide. */ - PC = term_pc ? *term_pc : 0; - BC = term_backspace; - UP = term_up; - - if (!term_cr) - term_cr = "\r"; - - tty = rl_instream ? fileno (rl_instream) : 0; - - screenwidth = screenheight = 0; - - _rl_term_autowrap = tgetflag ("am") && tgetflag ("xn"); - - _rl_get_screen_size (tty, 0); - - /* "An application program can assume that the terminal can do - character insertion if *any one of* the capabilities `IC', - `im', `ic' or `ip' is provided." But we can't do anything if - only `ip' is provided, so... */ - terminal_can_insert = (term_IC || term_im || term_ic); - - /* Check to see if this terminal has a meta key and clear the capability - variables if there is none. */ - term_has_meta = (tgetflag ("km") || tgetflag ("MT")); - if (!term_has_meta) - term_mm = term_mo = (char *)NULL; - - /* Attempt to find and bind the arrow keys. Do not override already - bound keys in an overzealous attempt, however. */ - xkeymap = _rl_keymap; - - _rl_keymap = emacs_standard_keymap; - _rl_bind_if_unbound (term_ku, rl_get_previous_history); - _rl_bind_if_unbound (term_kd, rl_get_next_history); - _rl_bind_if_unbound (term_kr, rl_forward); - _rl_bind_if_unbound (term_kl, rl_backward); - - _rl_bind_if_unbound (term_kh, rl_beg_of_line); /* Home */ - _rl_bind_if_unbound (term_kH, rl_end_of_line); /* End */ - -#if defined (VI_MODE) - _rl_keymap = vi_movement_keymap; - _rl_bind_if_unbound (term_ku, rl_get_previous_history); - _rl_bind_if_unbound (term_kd, rl_get_next_history); - _rl_bind_if_unbound (term_kr, rl_forward); - _rl_bind_if_unbound (term_kl, rl_backward); - - _rl_bind_if_unbound (term_kh, rl_beg_of_line); /* Home */ - _rl_bind_if_unbound (term_kH, rl_end_of_line); /* End */ -#endif /* VI_MODE */ - - _rl_keymap = xkeymap; - -#endif /* !__GO32__ */ - return 0; -} - -char * -rl_get_termcap (cap) - char *cap; -{ - register int i; - - if (tcap_initialized == 0) - return ((char *)NULL); - for (i = 0; i < NUM_TC_STRINGS; i++) - { - if (tc_strings[i].tc_var[0] == cap[0] && strcmp (tc_strings[i].tc_var, cap) == 0) - return *(tc_strings[i].tc_value); - } - return ((char *)NULL); -} - -/* Re-initialize the terminal considering that the TERM/TERMCAP variable - has changed. */ -int -rl_reset_terminal (terminal_name) - char *terminal_name; -{ - _rl_init_terminal_io (terminal_name); - return 0; -} - -/* A function for the use of tputs () */ -#ifdef _MINIX -void -_rl_output_character_function (c) - int c; -{ - putc (c, _rl_out_stream); -} -#else /* !_MINIX */ -int -_rl_output_character_function (c) - int c; -{ - return putc (c, _rl_out_stream); -} -#endif /* !_MINIX */ -/* Write COUNT characters from STRING to the output stream. */ -void -_rl_output_some_chars (string, count) - char *string; - int count; -{ - fwrite (string, 1, count, _rl_out_stream); -} - -/* Move the cursor back. */ -int -_rl_backspace (count) - int count; -{ - register int i; - -#if !defined (__GO32__) - if (term_backspace) - for (i = 0; i < count; i++) - tputs (term_backspace, 1, _rl_output_character_function); - else -#endif /* !__GO32__ */ - for (i = 0; i < count; i++) - putc ('\b', _rl_out_stream); - return 0; -} - -/* Move to the start of the next line. */ -int -crlf () -{ -#if defined (NEW_TTY_DRIVER) - if (term_cr) - tputs (term_cr, 1, _rl_output_character_function); -#endif /* NEW_TTY_DRIVER */ - putc ('\n', _rl_out_stream); - return 0; -} - -/* Ring the terminal bell. */ -int -ding () -{ - if (readline_echoing_p) - { -#if !defined (__GO32__) - switch (_rl_bell_preference) - { - case NO_BELL: - default: - break; - case VISIBLE_BELL: - if (visible_bell) - { - tputs (visible_bell, 1, _rl_output_character_function); - break; - } - /* FALLTHROUGH */ - case AUDIBLE_BELL: - fprintf (stderr, "\007"); - fflush (stderr); - break; - } -#else /* __GO32__ */ - fprintf (stderr, "\007"); - fflush (stderr); -#endif /* __GO32__ */ - return (0); - } - return (-1); -} - -/* **************************************************************** */ -/* */ -/* Controlling the Meta Key and Keypad */ -/* */ -/* **************************************************************** */ - -void -_rl_enable_meta_key () -{ - if (term_has_meta && term_mm) - tputs (term_mm, 1, _rl_output_character_function); -} - -void -_rl_control_keypad (on) - int on; -{ - if (on && term_ks) - tputs (term_ks, 1, _rl_output_character_function); - else if (!on && term_ke) - tputs (term_ke, 1, _rl_output_character_function); -} |