embedaddon/readline/terminal.c - diff

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version 1.1.1.1, 2014/07/30 08:16:45	version 1.1.1.2, 2021/03/17 01:01:01
Line 1	Line 1
/* terminal.c -- controlling the terminal with termcap. */	/* terminal.c -- controlling the terminal with termcap. */

/* Copyright (C) 1996-2009 Free Software Foundation, Inc.	/* Copyright (C) 1996-2017 Free Software Foundation, Inc.

This file is part of the GNU Readline Library (Readline), a library	This file is part of the GNU Readline Library (Readline), a library
for reading lines of text with interactive input and history editing.	for reading lines of text with interactive input and history editing.
Line 51	Line 51
/* System-specific feature definitions and include files. */	/* System-specific feature definitions and include files. */
#include "rldefs.h"	#include "rldefs.h"

#if defined (GWINSZ_IN_SYS_IOCTL) && !defined (TIOCGWINSZ)
# include <sys/ioctl.h>
#endif /* GWINSZ_IN_SYS_IOCTL && !TIOCGWINSZ */

#ifdef __MSDOS__	#ifdef __MSDOS__
# include <pc.h>	# include <pc.h>
#endif	#endif

#include "rltty.h"	#include "rltty.h"
	#if defined (HAVE_SYS_IOCTL_H)
	# include <sys/ioctl.h> /* include for declaration of ioctl */
	#endif
#include "tcap.h"	#include "tcap.h"

/* Some standard library routines. */	/* Some standard library routines. */
Line 113 char PC, BC, UP;	Line 112 char PC, BC, UP;
/* Some strings to control terminal actions. These are output by tputs (). */	/* Some strings to control terminal actions. These are output by tputs (). */
char *_rl_term_clreol;	char *_rl_term_clreol;
char *_rl_term_clrpag;	char *_rl_term_clrpag;
	char *_rl_term_clrscroll;
char *_rl_term_cr;	char *_rl_term_cr;
char *_rl_term_backspace;	char *_rl_term_backspace;
char *_rl_term_goto;	char *_rl_term_goto;
Line 132 char *_rl_term_IC;	Line 132 char *_rl_term_IC;
char *_rl_term_dc;	char *_rl_term_dc;
char *_rl_term_DC;	char *_rl_term_DC;

	/* How to move forward a char, non-destructively */
char *_rl_term_forward_char;	char *_rl_term_forward_char;

/* How to go up a line. */	/* How to go up a line. */
Line 151 static int term_has_meta;	Line 152 static int term_has_meta;
static char *_rl_term_mm;	static char *_rl_term_mm;
static char *_rl_term_mo;	static char *_rl_term_mo;

	/* The sequences to enter and exit standout mode. */
	static char *_rl_term_so;
	static char *_rl_term_se;

/* The key sequences output by the arrow keys, if this terminal has any. */	/* The key sequences output by the arrow keys, if this terminal has any. */
static char *_rl_term_ku;	static char *_rl_term_ku;
static char *_rl_term_kd;	static char *_rl_term_kd;
Line 176 static char *_rl_term_kI;	Line 181 static char *_rl_term_kI;
static char _rl_term_vs; / very visible */	static char _rl_term_vs; / very visible */
static char _rl_term_ve; / normal */	static char _rl_term_ve; / normal */

	/* It's not clear how HPUX is so broken here. */
	#ifdef TGETENT_BROKEN
	# define TGETENT_SUCCESS 0
	#else
	# define TGETENT_SUCCESS 1
	#endif
	#ifdef TGETFLAG_BROKEN
	# define TGETFLAG_SUCCESS 0
	#else
	# define TGETFLAG_SUCCESS 1
	#endif
	#define TGETFLAG(cap) (tgetflag (cap) == TGETFLAG_SUCCESS)

static void bind_termcap_arrow_keys PARAMS((Keymap));	static void bind_termcap_arrow_keys PARAMS((Keymap));

/* Variables that hold the screen dimensions, used by the display code. */	/* Variables that hold the screen dimensions, used by the display code. */
Line 189 int _rl_enable_meta = 1;	Line 207 int _rl_enable_meta = 1;

#if defined (__EMX__)	#if defined (__EMX__)
static void	static void
_emx_get_screensize (swp, shp)	_emx_get_screensize (int swp, int shp)
int swp, shp;
{	{
int sz[2];	int sz[2];

Line 205 _emx_get_screensize (swp, shp)	Line 222 _emx_get_screensize (swp, shp)

#if defined (__MINGW32__)	#if defined (__MINGW32__)
static void	static void
_win_get_screensize (swp, shp)	_win_get_screensize (int swp, int shp)
int swp, shp;
{	{
HANDLE hConOut;	HANDLE hConOut;
CONSOLE_SCREEN_BUFFER_INFO scr;	CONSOLE_SCREEN_BUFFER_INFO scr;
Line 228 _win_get_screensize (swp, shp)	Line 244 _win_get_screensize (swp, shp)
values of $LINES and $COLUMNS. The tests for TERM_STRING_BUFFER being	values of $LINES and $COLUMNS. The tests for TERM_STRING_BUFFER being
non-null serve to check whether or not we have initialized termcap. */	non-null serve to check whether or not we have initialized termcap. */
void	void
_rl_get_screen_size (tty, ignore_env)	_rl_get_screen_size (int tty, int ignore_env)
int tty, ignore_env;
{	{
char *ss;	char *ss;
#if defined (TIOCGWINSZ)	#if defined (TIOCGWINSZ)
Line 319 _rl_get_screen_size (tty, ignore_env)	Line 334 _rl_get_screen_size (tty, ignore_env)
}	}

void	void
_rl_set_screen_size (rows, cols)	_rl_set_screen_size (int rows, int cols)
int rows, cols;
{	{
if (_rl_term_autowrap == -1)	if (_rl_term_autowrap == -1)
_rl_init_terminal_io (rl_terminal_name);	_rl_init_terminal_io (rl_terminal_name);
Line 339 _rl_set_screen_size (rows, cols)	Line 353 _rl_set_screen_size (rows, cols)
}	}

void	void
rl_set_screen_size (rows, cols)	rl_set_screen_size (int rows, int cols)
int rows, cols;
{	{
_rl_set_screen_size (rows, cols);	_rl_set_screen_size (rows, cols);
}	}

void	void
rl_get_screen_size (rows, cols)	rl_get_screen_size (int rows, int cols)
int rows, cols;
{	{
if (rows)	if (rows)
*rows = _rl_screenheight;	*rows = _rl_screenheight;
Line 356 rl_get_screen_size (rows, cols)	Line 368 rl_get_screen_size (rows, cols)
}	}

void	void
rl_reset_screen_size ()	rl_reset_screen_size (void)
{	{
_rl_get_screen_size (fileno (rl_instream), 0);	_rl_get_screen_size (fileno (rl_instream), 0);
}	}

void	void
_rl_sigwinch_resize_terminal ()	_rl_sigwinch_resize_terminal (void)
{	{
_rl_get_screen_size (fileno (rl_instream), 1);	_rl_get_screen_size (fileno (rl_instream), 1);
}	}

void	void
rl_resize_terminal ()	rl_resize_terminal (void)
{	{
_rl_get_screen_size (fileno (rl_instream), 1);	_rl_get_screen_size (fileno (rl_instream), 1);
if (_rl_echoing_p)	if (_rl_echoing_p)
Line 391 static const struct _tc_string tc_strings[] =	Line 403 static const struct _tc_string tc_strings[] =
{	{
{ "@7", &_rl_term_at7 },	{ "@7", &_rl_term_at7 },
{ "DC", &_rl_term_DC },	{ "DC", &_rl_term_DC },
	{ "E3", &_rl_term_clrscroll },
{ "IC", &_rl_term_IC },	{ "IC", &_rl_term_IC },
{ "ce", &_rl_term_clreol },	{ "ce", &_rl_term_clreol },
{ "cl", &_rl_term_clrpag },	{ "cl", &_rl_term_clrpag },
Line 414 static const struct _tc_string tc_strings[] =	Line 427 static const struct _tc_string tc_strings[] =
{ "mo", &_rl_term_mo },	{ "mo", &_rl_term_mo },
{ "nd", &_rl_term_forward_char },	{ "nd", &_rl_term_forward_char },
{ "pc", &_rl_term_pc },	{ "pc", &_rl_term_pc },
	{ "se", &_rl_term_se },
	{ "so", &_rl_term_so },
{ "up", &_rl_term_up },	{ "up", &_rl_term_up },
{ "vb", &_rl_visible_bell },	{ "vb", &_rl_visible_bell },
{ "vs", &_rl_term_vs },	{ "vs", &_rl_term_vs },
Line 425 static const struct _tc_string tc_strings[] =	Line 440 static const struct _tc_string tc_strings[] =
/* Read the desired terminal capability strings into BP. The capabilities	/* Read the desired terminal capability strings into BP. The capabilities
are described in the TC_STRINGS table. */	are described in the TC_STRINGS table. */
static void	static void
get_term_capabilities (bp)	get_term_capabilities (char **bp)
char **bp;
{	{
#if !defined (__DJGPP__) /* XXX - doesn't DJGPP have a termcap library? */	#if !defined (__DJGPP__) /* XXX - doesn't DJGPP have a termcap library? */
register int i;	register int i;
Line 438 get_term_capabilities (bp)	Line 452 get_term_capabilities (bp)
}	}

int	int
_rl_init_terminal_io (terminal_name)	_rl_init_terminal_io (const char *terminal_name)
const char *terminal_name;
{	{
const char *term;	const char *term;
char *buffer;	char *buffer;
int tty, tgetent_ret;	int tty, tgetent_ret, dumbterm;

term = terminal_name ? terminal_name : sh_get_env_value ("TERM");	term = terminal_name ? terminal_name : sh_get_env_value ("TERM");
_rl_term_clrpag = _rl_term_cr = _rl_term_clreol = (char *)NULL;	_rl_term_clrpag = _rl_term_cr = _rl_term_clreol = _rl_term_clrscroll = (char *)NULL;
tty = rl_instream ? fileno (rl_instream) : 0;	tty = rl_instream ? fileno (rl_instream) : 0;

if (term == 0)	if (term == 0)
term = "dumb";	term = "dumb";

	dumbterm = STREQ (term, "dumb");

#ifdef __MSDOS__	#ifdef __MSDOS__
_rl_term_im = _rl_term_ei = _rl_term_ic = _rl_term_IC = (char *)NULL;	_rl_term_im = _rl_term_ei = _rl_term_ic = _rl_term_IC = (char *)NULL;
_rl_term_up = _rl_term_dc = _rl_term_DC = _rl_visible_bell = (char *)NULL;	_rl_term_up = _rl_term_dc = _rl_term_DC = _rl_visible_bell = (char *)NULL;
Line 459 _rl_init_terminal_io (terminal_name)	Line 474 _rl_init_terminal_io (terminal_name)
_rl_term_mm = _rl_term_mo = (char *)NULL;	_rl_term_mm = _rl_term_mo = (char *)NULL;
_rl_terminal_can_insert = term_has_meta = _rl_term_autowrap = 0;	_rl_terminal_can_insert = term_has_meta = _rl_term_autowrap = 0;
_rl_term_cr = "\r";	_rl_term_cr = "\r";
_rl_term_clreol = _rl_term_clrpag = _rl_term_backspace = (char *)NULL;	_rl_term_backspace = (char *)NULL;
_rl_term_goto = _rl_term_pc = _rl_term_ip = (char *)NULL;	_rl_term_goto = _rl_term_pc = _rl_term_ip = (char *)NULL;
_rl_term_ks = _rl_term_ke =_rl_term_vs = _rl_term_ve = (char *)NULL;	_rl_term_ks = _rl_term_ke =_rl_term_vs = _rl_term_ve = (char *)NULL;
_rl_term_kh = _rl_term_kH = _rl_term_at7 = _rl_term_kI = (char *)NULL;	_rl_term_kh = _rl_term_kH = _rl_term_at7 = _rl_term_kI = (char *)NULL;
	_rl_term_so = _rl_term_se = (char *)NULL;
#if defined(HACK_TERMCAP_MOTION)	#if defined(HACK_TERMCAP_MOTION)
_rl_term_forward_char = (char *)NULL;	_rl_term_forward_char = (char *)NULL;
#endif	#endif
Line 489 _rl_init_terminal_io (terminal_name)	Line 505 _rl_init_terminal_io (terminal_name)
tgetent_ret = tgetent (term_buffer, term);	tgetent_ret = tgetent (term_buffer, term);
}	}

if (tgetent_ret <= 0)	if (tgetent_ret != TGETENT_SUCCESS)
{	{
FREE (term_string_buffer);	FREE (term_string_buffer);
FREE (term_buffer);	FREE (term_buffer);
Line 527 _rl_init_terminal_io (terminal_name)	Line 543 _rl_init_terminal_io (terminal_name)
_rl_term_mm = _rl_term_mo = (char *)NULL;	_rl_term_mm = _rl_term_mo = (char *)NULL;
_rl_term_ve = _rl_term_vs = (char *)NULL;	_rl_term_ve = _rl_term_vs = (char *)NULL;
_rl_term_forward_char = (char *)NULL;	_rl_term_forward_char = (char *)NULL;
	_rl_term_so = _rl_term_se = (char *)NULL;
_rl_terminal_can_insert = term_has_meta = 0;	_rl_terminal_can_insert = term_has_meta = 0;

	/* Assume generic unknown terminal can't handle the enable/disable
	escape sequences */
	_rl_enable_bracketed_paste = 0;

/* Reasonable defaults for tgoto(). Readline currently only uses	/* Reasonable defaults for tgoto(). Readline currently only uses
tgoto if _rl_term_IC or _rl_term_DC is defined, but just in case we	tgoto if _rl_term_IC or _rl_term_DC is defined, but just in case we
change that later... */	change that later... */
Line 547 _rl_init_terminal_io (terminal_name)	Line 568 _rl_init_terminal_io (terminal_name)
BC = _rl_term_backspace;	BC = _rl_term_backspace;
UP = _rl_term_up;	UP = _rl_term_up;

if (!_rl_term_cr)	if (_rl_term_cr == 0)
_rl_term_cr = "\r";	_rl_term_cr = "\r";

_rl_term_autowrap = tgetflag ("am") && tgetflag ("xn");	_rl_term_autowrap = TGETFLAG ("am") && TGETFLAG ("xn");

/* Allow calling application to set default height and width, using	/* Allow calling application to set default height and width, using
rl_set_screen_size */	rl_set_screen_size */
Line 565 _rl_init_terminal_io (terminal_name)	Line 586 _rl_init_terminal_io (terminal_name)

/* Check to see if this terminal has a meta key and clear the capability	/* Check to see if this terminal has a meta key and clear the capability
variables if there is none. */	variables if there is none. */
term_has_meta = tgetflag ("km") != 0;	term_has_meta = TGETFLAG ("km");
if (term_has_meta == 0)	if (term_has_meta == 0)
_rl_term_mm = _rl_term_mo = (char *)NULL;	_rl_term_mm = _rl_term_mo = (char *)NULL;
#endif /* !__MSDOS__ */	#endif /* !__MSDOS__ */
Line 580 _rl_init_terminal_io (terminal_name)	Line 601 _rl_init_terminal_io (terminal_name)
bind_termcap_arrow_keys (vi_insertion_keymap);	bind_termcap_arrow_keys (vi_insertion_keymap);
#endif /* VI_MODE */	#endif /* VI_MODE */

	/* There's no way to determine whether or not a given terminal supports
	bracketed paste mode, so we assume a terminal named "dumb" does not. */
	if (dumbterm)
	_rl_enable_bracketed_paste = 0;

return 0;	return 0;
}	}

/* Bind the arrow key sequences from the termcap description in MAP. */	/* Bind the arrow key sequences from the termcap description in MAP. */
static void	static void
bind_termcap_arrow_keys (map)	bind_termcap_arrow_keys (Keymap map)
Keymap map;
{	{
Keymap xkeymap;	Keymap xkeymap;

Line 602 bind_termcap_arrow_keys (map)	Line 627 bind_termcap_arrow_keys (map)
rl_bind_keyseq_if_unbound (_rl_term_at7, rl_end_of_line); /* End */	rl_bind_keyseq_if_unbound (_rl_term_at7, rl_end_of_line); /* End */

rl_bind_keyseq_if_unbound (_rl_term_kD, rl_delete);	rl_bind_keyseq_if_unbound (_rl_term_kD, rl_delete);
	rl_bind_keyseq_if_unbound (_rl_term_kI, rl_overwrite_mode); /* Insert */

_rl_keymap = xkeymap;	_rl_keymap = xkeymap;
}	}

char *	char *
rl_get_termcap (cap)	rl_get_termcap (const char *cap)
const char *cap;
{	{
register int i;	register int i;

Line 625 rl_get_termcap (cap)	Line 650 rl_get_termcap (cap)
/* Re-initialize the terminal considering that the TERM/TERMCAP variable	/* Re-initialize the terminal considering that the TERM/TERMCAP variable
has changed. */	has changed. */
int	int
rl_reset_terminal (terminal_name)	rl_reset_terminal (const char *terminal_name)
const char *terminal_name;
{	{
_rl_screenwidth = _rl_screenheight = 0;	_rl_screenwidth = _rl_screenheight = 0;
_rl_init_terminal_io (terminal_name);	_rl_init_terminal_io (terminal_name);
Line 636 rl_reset_terminal (terminal_name)	Line 660 rl_reset_terminal (terminal_name)
/* A function for the use of tputs () */	/* A function for the use of tputs () */
#ifdef _MINIX	#ifdef _MINIX
void	void
_rl_output_character_function (c)	_rl_output_character_function (int c)
int c;
{	{
putc (c, _rl_out_stream);	putc (c, _rl_out_stream);
}	}
#else /* !_MINIX */	#else /* !_MINIX */
int	int
_rl_output_character_function (c)	_rl_output_character_function (int c)
int c;
{	{
return putc (c, _rl_out_stream);	return putc (c, _rl_out_stream);
}	}
Line 652 _rl_output_character_function (c)	Line 674 _rl_output_character_function (c)

/* Write COUNT characters from STRING to the output stream. */	/* Write COUNT characters from STRING to the output stream. */
void	void
_rl_output_some_chars (string, count)	_rl_output_some_chars (const char *string, int count)
const char *string;
int count;
{	{
fwrite (string, 1, count, _rl_out_stream);	fwrite (string, 1, count, _rl_out_stream);
}	}

/* Move the cursor back. */	/* Move the cursor back. */
int	int
_rl_backspace (count)	_rl_backspace (int count)
int count;
{	{
register int i;	register int i;

Line 679 _rl_backspace (count)	Line 698 _rl_backspace (count)

/* Move to the start of the next line. */	/* Move to the start of the next line. */
int	int
rl_crlf ()	rl_crlf (void)
{	{
#if defined (NEW_TTY_DRIVER) \|\| defined (__MINT__)	#if defined (NEW_TTY_DRIVER) \|\| defined (__MINT__)
if (_rl_term_cr)	if (_rl_term_cr)
Line 689 rl_crlf ()	Line 708 rl_crlf ()
return 0;	return 0;
}	}

	void
	_rl_cr (void)
	{
	#if defined (__MSDOS__)
	putc ('\r', rl_outstream);
	#else
	tputs (_rl_term_cr, 1, _rl_output_character_function);
	#endif
	}

/* Ring the terminal bell. */	/* Ring the terminal bell. */
int	int
rl_ding ()	rl_ding (void)
{	{
if (_rl_echoing_p)	if (_rl_echoing_p)
{	{
Line 723 rl_ding ()	Line 752 rl_ding ()

/* **************************************************************** */	/* **************************************************************** */
/* */	/* */
	/* Entering and leaving terminal standout mode */
	/* */
	/* **************************************************************** */

	void
	_rl_standout_on (void)
	{
	#ifndef __MSDOS__
	if (_rl_term_so && _rl_term_se)
	tputs (_rl_term_so, 1, _rl_output_character_function);
	#endif
	}

	void
	_rl_standout_off (void)
	{
	#ifndef __MSDOS__
	if (_rl_term_so && _rl_term_se)
	tputs (_rl_term_se, 1, _rl_output_character_function);
	#endif
	}

	/* **************************************************************** */
	/* */
/* Controlling the Meta Key and Keypad */	/* Controlling the Meta Key and Keypad */
/* */	/* */
/* **************************************************************** */	/* **************************************************************** */
Line 730 rl_ding ()	Line 783 rl_ding ()
static int enabled_meta = 0; /* flag indicating we enabled meta mode */	static int enabled_meta = 0; /* flag indicating we enabled meta mode */

void	void
_rl_enable_meta_key ()	_rl_enable_meta_key (void)
{	{
#if !defined (__DJGPP__)	#if !defined (__DJGPP__)
if (term_has_meta && _rl_term_mm)	if (term_has_meta && _rl_term_mm)
Line 742 _rl_enable_meta_key ()	Line 795 _rl_enable_meta_key ()
}	}

void	void
_rl_disable_meta_key ()	_rl_disable_meta_key (void)
{	{
#if !defined (__DJGPP__)	#if !defined (__DJGPP__)
if (term_has_meta && _rl_term_mo && enabled_meta)	if (term_has_meta && _rl_term_mo && enabled_meta)
Line 754 _rl_disable_meta_key ()	Line 807 _rl_disable_meta_key ()
}	}

void	void
_rl_control_keypad (on)	_rl_control_keypad (int on)
int on;
{	{
#if !defined (__DJGPP__)	#if !defined (__DJGPP__)
if (on && _rl_term_ks)	if (on && _rl_term_ks)
Line 776 _rl_control_keypad (on)	Line 828 _rl_control_keypad (on)
cursor. Overwrite mode gets a very visible cursor. Only does	cursor. Overwrite mode gets a very visible cursor. Only does
anything if we have both capabilities. */	anything if we have both capabilities. */
void	void
_rl_set_cursor (im, force)	_rl_set_cursor (int im, int force)
int im, force;
{	{
#ifndef __MSDOS__	#ifndef __MSDOS__
if (_rl_term_ve && _rl_term_vs)	if (_rl_term_ve && _rl_term_vs)

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>

Removed from v.1.1.1.1
changed lines
	Added in v.1.1.1.2