/* terminal.c -- controlling the terminal with termcap. */
-/* Copyright (C) 1996 Free Software Foundation, Inc.
+/* Copyright (C) 1996-2017 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.
+ This file is part of the GNU Readline Library (Readline), 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
+ Readline 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.
- 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
+ Readline 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. */
+ You should have received a copy of the GNU General Public License
+ along with Readline. If not, see <http://www.gnu.org/licenses/>.
+*/
+
#define READLINE_LIBRARY
#if defined (HAVE_CONFIG_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 */
-
#ifdef __MSDOS__
-# include <pc.h>
#endif
#include "rltty.h"
+#if defined (HAVE_SYS_IOCTL_H)
+# include <sys/ioctl.h> /* include for declaration of ioctl */
+#endif
#include "tcap.h"
/* Some standard library routines. */
#include "xmalloc.h"
#if defined (__MINGW32__)
-# include <windows.h>
-# include <wincon.h>
+# include <windows.h>
+# include <wincon.h>
+
+static void _win_get_screensize PARAMS((int *, int *));
#endif
-#define CUSTOM_REDISPLAY_FUNC() (rl_redisplay_function != rl_redisplay)
-#define CUSTOM_INPUT_FUNC() (rl_getc_function != rl_getc)
+#if defined (__EMX__)
+static void _emx_get_screensize PARAMS((int *, int *));
+#endif
+
+/* If the calling application sets this to a non-zero value, readline will
+ use the $LINES and $COLUMNS environment variables to set its idea of the
+ window size before interrogating the kernel. */
+int rl_prefer_env_winsize = 0;
+
+/* If this is non-zero, readline will set LINES and COLUMNS in the
+ environment when it handles SIGWINCH. */
+int rl_change_environment = 1;
/* **************************************************************** */
/* */
#ifndef __MSDOS__
static char *term_buffer = (char *)NULL;
static char *term_string_buffer = (char *)NULL;
-
-/* Non-zero means this terminal can't really do anything. */
-static int dumb_term;
-#endif /* !__MSDOS__ */
+#endif
static int tcap_initialized;
-#if !defined (__linux__)
+#if !defined (__linux__) && !defined (NCURSES_VERSION)
# if defined (__EMX__) || defined (NEED_EXTERN_PC)
extern
# endif /* __EMX__ || NEED_EXTERN_PC */
char PC, *BC, *UP;
-#endif /* __linux__ */
+#endif /* !__linux__ && !NCURSES_VERSION */
/* Some strings to control terminal actions. These are output by tputs (). */
char *_rl_term_clreol;
char *_rl_term_clrpag;
+char *_rl_term_clrscroll;
char *_rl_term_cr;
char *_rl_term_backspace;
char *_rl_term_goto;
char *_rl_term_dc;
char *_rl_term_DC;
-#if defined (HACK_TERMCAP_MOTION)
+/* How to move forward a char, non-destructively */
char *_rl_term_forward_char;
-#endif /* HACK_TERMCAP_MOTION */
/* How to go up a line. */
char *_rl_term_up;
static char *_rl_visible_bell;
/* Non-zero means the terminal can auto-wrap lines. */
-int _rl_term_autowrap;
+int _rl_term_autowrap = -1;
/* Non-zero means that this terminal has a meta key. */
static int term_has_meta;
static char *_rl_term_kH;
static char *_rl_term_at7; /* @7 */
+/* Delete key */
+static char *_rl_term_kD;
+
/* Insert key */
static char *_rl_term_kI;
#if defined (__EMX__)
static void
-_emx_get_screensize (swp, shp)
- int *swp, *shp;
+_emx_get_screensize (int *swp, int *shp)
{
int sz[2];
}
#endif
+#if defined (__MINGW32__)
+static void
+_win_get_screensize (int *swp, int *shp)
+{
+ HANDLE hConOut;
+ CONSOLE_SCREEN_BUFFER_INFO scr;
+
+ hConOut = GetStdHandle (STD_OUTPUT_HANDLE);
+ if (hConOut != INVALID_HANDLE_VALUE)
+ {
+ if (GetConsoleScreenBufferInfo (hConOut, &scr))
+ {
+ *swp = scr.dwSize.X;
+ *shp = scr.srWindow.Bottom - scr.srWindow.Top + 1;
+ }
+ }
+}
+#endif
+
/* 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;
+_rl_get_screen_size (int tty, int ignore_env)
{
char *ss;
#if defined (TIOCGWINSZ)
struct winsize window_size;
#endif /* TIOCGWINSZ */
+ int wr, wc;
+ wr = wc = -1;
#if defined (TIOCGWINSZ)
if (ioctl (tty, TIOCGWINSZ, &window_size) == 0)
{
- _rl_screenwidth = (int) window_size.ws_col;
- _rl_screenheight = (int) window_size.ws_row;
+ wc = (int) window_size.ws_col;
+ wr = (int) window_size.ws_row;
}
#endif /* TIOCGWINSZ */
- /* For MinGW, we get the console size from the Windows API. */
-#if defined (__MINGW32__)
- HANDLE hConOut = GetStdHandle (STD_OUTPUT_HANDLE);
- if (hConOut != INVALID_HANDLE_VALUE)
- {
- CONSOLE_SCREEN_BUFFER_INFO scr;
- if (GetConsoleScreenBufferInfo (hConOut, &scr))
- {
- _rl_screenwidth = scr.dwSize.X;
- _rl_screenheight = scr.srWindow.Bottom - scr.srWindow.Top + 1;
- }
- }
-#endif
-
#if defined (__EMX__)
- _emx_get_screensize (&_rl_screenwidth, &_rl_screenheight);
+ _emx_get_screensize (&wc, &wr);
+#elif defined (__MINGW32__)
+ _win_get_screensize (&wc, &wr);
#endif
+ if (ignore_env || rl_prefer_env_winsize == 0)
+ {
+ _rl_screenwidth = wc;
+ _rl_screenheight = wr;
+ }
+ else
+ _rl_screenwidth = _rl_screenheight = -1;
+
/* Environment variable COLUMNS overrides setting of "co" if IGNORE_ENV
- is unset. */
+ is unset. If we prefer the environment, check it first before
+ assigning the value returned by the kernel. */
if (_rl_screenwidth <= 0)
{
if (ignore_env == 0 && (ss = sh_get_env_value ("COLUMNS")))
_rl_screenwidth = atoi (ss);
+ if (_rl_screenwidth <= 0)
+ _rl_screenwidth = wc;
+
#if defined (__DJGPP__)
if (_rl_screenwidth <= 0)
_rl_screenwidth = ScreenCols ();
if (ignore_env == 0 && (ss = sh_get_env_value ("LINES")))
_rl_screenheight = atoi (ss);
+ if (_rl_screenheight <= 0)
+ _rl_screenheight = wr;
+
#if defined (__DJGPP__)
if (_rl_screenheight <= 0)
_rl_screenheight = ScreenRows ();
/* 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. */
- sh_set_lines_and_columns (_rl_screenheight, _rl_screenwidth);
+ if (rl_change_environment)
+ sh_set_lines_and_columns (_rl_screenheight, _rl_screenwidth);
if (_rl_term_autowrap == 0)
_rl_screenwidth--;
}
void
-_rl_set_screen_size (rows, cols)
- int rows, cols;
+_rl_set_screen_size (int rows, int cols)
{
- if (rows == 0 || cols == 0)
- return;
-
- _rl_screenheight = rows;
- _rl_screenwidth = cols;
+ if (_rl_term_autowrap == -1)
+ _rl_init_terminal_io (rl_terminal_name);
- if (_rl_term_autowrap == 0)
- _rl_screenwidth--;
+ if (rows > 0)
+ _rl_screenheight = rows;
+ if (cols > 0)
+ {
+ _rl_screenwidth = cols;
+ if (_rl_term_autowrap == 0)
+ _rl_screenwidth--;
+ }
- _rl_screenchars = _rl_screenwidth * _rl_screenheight;
+ if (rows > 0 || cols > 0)
+ _rl_screenchars = _rl_screenwidth * _rl_screenheight;
}
void
-rl_set_screen_size (rows, cols)
- int rows, cols;
+rl_set_screen_size (int rows, int cols)
{
_rl_set_screen_size (rows, cols);
}
void
-rl_get_screen_size (rows, cols)
- int *rows, *cols;
+rl_get_screen_size (int *rows, int *cols)
{
if (rows)
*rows = _rl_screenheight;
if (cols)
*cols = _rl_screenwidth;
}
-
+
void
-rl_resize_terminal ()
+rl_reset_screen_size (void)
{
- if (readline_echoing_p)
+ _rl_get_screen_size (fileno (rl_instream), 0);
+}
+
+void
+_rl_sigwinch_resize_terminal (void)
+{
+ _rl_get_screen_size (fileno (rl_instream), 1);
+}
+
+void
+rl_resize_terminal (void)
+{
+ _rl_get_screen_size (fileno (rl_instream), 1);
+ if (_rl_echoing_p)
{
- _rl_get_screen_size (fileno (rl_instream), 1);
if (CUSTOM_REDISPLAY_FUNC ())
rl_forced_update_display ();
- else
+ else if (RL_ISSTATE(RL_STATE_REDISPLAYING) == 0)
_rl_redisplay_after_sigwinch ();
}
}
struct _tc_string {
- const char *tc_var;
+ const char * const 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[] =
+static const struct _tc_string tc_strings[] =
{
{ "@7", &_rl_term_at7 },
{ "DC", &_rl_term_DC },
+ { "E3", &_rl_term_clrscroll },
{ "IC", &_rl_term_IC },
{ "ce", &_rl_term_clreol },
{ "cl", &_rl_term_clrpag },
{ "ei", &_rl_term_ei },
{ "ic", &_rl_term_ic },
{ "im", &_rl_term_im },
+ { "kD", &_rl_term_kD }, /* delete */
{ "kH", &_rl_term_kH }, /* home down ?? */
{ "kI", &_rl_term_kI }, /* insert */
{ "kd", &_rl_term_kd },
{ "le", &_rl_term_backspace },
{ "mm", &_rl_term_mm },
{ "mo", &_rl_term_mo },
-#if defined (HACK_TERMCAP_MOTION)
{ "nd", &_rl_term_forward_char },
-#endif
{ "pc", &_rl_term_pc },
{ "up", &_rl_term_up },
{ "vb", &_rl_visible_bell },
/* 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;
+get_term_capabilities (char **bp)
{
#if !defined (__DJGPP__) /* XXX - doesn't DJGPP have a termcap library? */
register int i;
for (i = 0; i < NUM_TC_STRINGS; i++)
-# ifdef __LCC__
*(tc_strings[i].tc_value) = tgetstr ((char *)tc_strings[i].tc_var, bp);
-# else
- *(tc_strings[i].tc_value) = tgetstr (tc_strings[i].tc_var, bp);
-# endif
#endif
tcap_initialized = 1;
}
int
-_rl_init_terminal_io (terminal_name)
- const char *terminal_name;
+_rl_init_terminal_io (const char *terminal_name)
{
const char *term;
char *buffer;
int tty, tgetent_ret;
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;
- _rl_screenwidth = _rl_screenheight = 0;
if (term == 0)
term = "dumb";
_rl_term_mm = _rl_term_mo = (char *)NULL;
_rl_terminal_can_insert = term_has_meta = _rl_term_autowrap = 0;
_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_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_autowrap = 0; /* used by _rl_get_screen_size */
+ /* Allow calling application to set default height and width, using
+ rl_set_screen_size */
+ if (_rl_screenwidth <= 0 || _rl_screenheight <= 0)
+ {
#if defined (__EMX__)
- _emx_get_screensize (&_rl_screenwidth, &_rl_screenheight);
- _rl_screenwidth--;
+ _emx_get_screensize (&_rl_screenwidth, &_rl_screenheight);
+ _rl_screenwidth--;
#else /* !__EMX__ */
- _rl_get_screen_size (tty, 0);
+ _rl_get_screen_size (tty, 0);
#endif /* !__EMX__ */
+ }
/* Defaults. */
if (_rl_screenwidth <= 0 || _rl_screenheight <= 0)
_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_ku = _rl_term_kd = _rl_term_kl = _rl_term_kr = (char *)NULL;
- _rl_term_kh = _rl_term_kH = _rl_term_kI = (char *)NULL;
+ _rl_term_kh = _rl_term_kH = _rl_term_kI = _rl_term_kD = (char *)NULL;
_rl_term_ks = _rl_term_ke = _rl_term_at7 = (char *)NULL;
_rl_term_mm = _rl_term_mo = (char *)NULL;
_rl_term_ve = _rl_term_vs = (char *)NULL;
-#if defined (HACK_TERMCAP_MOTION)
- term_forward_char = (char *)NULL;
-#endif
+ _rl_term_forward_char = (char *)NULL;
_rl_terminal_can_insert = term_has_meta = 0;
/* Reasonable defaults for tgoto(). Readline currently only uses
_rl_term_autowrap = tgetflag ("am") && tgetflag ("xn");
- _rl_get_screen_size (tty, 0);
+ /* Allow calling application to set default height and width, using
+ rl_set_screen_size */
+ if (_rl_screenwidth <= 0 || _rl_screenheight <= 0)
+ _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',
/* 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_has_meta = tgetflag ("km") != 0;
+ if (term_has_meta == 0)
_rl_term_mm = _rl_term_mo = (char *)NULL;
-
#endif /* !__MSDOS__ */
/* Attempt to find and bind the arrow keys. Do not override already
/* Bind the arrow key sequences from the termcap description in MAP. */
static void
-bind_termcap_arrow_keys (map)
- Keymap map;
+bind_termcap_arrow_keys (Keymap map)
{
Keymap xkeymap;
xkeymap = _rl_keymap;
_rl_keymap = map;
- _rl_bind_if_unbound (_rl_term_ku, rl_get_previous_history);
- _rl_bind_if_unbound (_rl_term_kd, rl_get_next_history);
- _rl_bind_if_unbound (_rl_term_kr, rl_forward);
- _rl_bind_if_unbound (_rl_term_kl, rl_backward);
+ rl_bind_keyseq_if_unbound (_rl_term_ku, rl_get_previous_history);
+ rl_bind_keyseq_if_unbound (_rl_term_kd, rl_get_next_history);
+ rl_bind_keyseq_if_unbound (_rl_term_kr, rl_forward_char);
+ rl_bind_keyseq_if_unbound (_rl_term_kl, rl_backward_char);
+
+ rl_bind_keyseq_if_unbound (_rl_term_kh, rl_beg_of_line); /* Home */
+ rl_bind_keyseq_if_unbound (_rl_term_at7, rl_end_of_line); /* End */
- _rl_bind_if_unbound (_rl_term_kh, rl_beg_of_line); /* Home */
- _rl_bind_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_kI, rl_overwrite_mode); /* Insert */
_rl_keymap = xkeymap;
}
char *
-rl_get_termcap (cap)
- const char *cap;
+rl_get_termcap (const char *cap)
{
register int i;
/* Re-initialize the terminal considering that the TERM/TERMCAP variable
has changed. */
int
-rl_reset_terminal (terminal_name)
- const char *terminal_name;
+rl_reset_terminal (const char *terminal_name)
{
+ _rl_screenwidth = _rl_screenheight = 0;
_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;
+_rl_output_character_function (int c)
{
putc (c, _rl_out_stream);
}
#else /* !_MINIX */
int
-_rl_output_character_function (c)
- int c;
+_rl_output_character_function (int c)
{
return putc (c, _rl_out_stream);
}
/* Write COUNT characters from STRING to the output stream. */
void
-_rl_output_some_chars (string, count)
- const char *string;
- int count;
+_rl_output_some_chars (const char *string, int count)
{
fwrite (string, 1, count, _rl_out_stream);
}
/* Move the cursor back. */
int
-_rl_backspace (count)
- int count;
+_rl_backspace (int count)
{
register int i;
/* Move to the start of the next line. */
int
-rl_crlf ()
+rl_crlf (void)
{
-#if defined (NEW_TTY_DRIVER)
+#if defined (NEW_TTY_DRIVER) || defined (__MINT__)
if (_rl_term_cr)
tputs (_rl_term_cr, 1, _rl_output_character_function);
-#endif /* NEW_TTY_DRIVER */
+#endif /* NEW_TTY_DRIVER || __MINT__ */
putc ('\n', _rl_out_stream);
return 0;
}
/* Ring the terminal bell. */
int
-rl_ding ()
+rl_ding (void)
{
- if (readline_echoing_p)
+ if (_rl_echoing_p)
{
switch (_rl_bell_preference)
{
default:
break;
case VISIBLE_BELL:
-#ifdef __MSDOS__
- ScreenVisualBell ();
- break;
-#else
if (_rl_visible_bell)
{
+#ifdef __DJGPP__
+ ScreenVisualBell ();
+#else
tputs (_rl_visible_bell, 1, _rl_output_character_function);
+#endif
break;
}
-#endif
/* FALLTHROUGH */
case AUDIBLE_BELL:
fprintf (stderr, "\007");
/* */
/* **************************************************************** */
+static int enabled_meta = 0; /* flag indicating we enabled meta mode */
+
void
-_rl_enable_meta_key ()
+_rl_enable_meta_key (void)
{
#if !defined (__DJGPP__)
if (term_has_meta && _rl_term_mm)
- tputs (_rl_term_mm, 1, _rl_output_character_function);
+ {
+ tputs (_rl_term_mm, 1, _rl_output_character_function);
+ enabled_meta = 1;
+ }
+#endif
+}
+
+void
+_rl_disable_meta_key (void)
+{
+#if !defined (__DJGPP__)
+ if (term_has_meta && _rl_term_mo && enabled_meta)
+ {
+ tputs (_rl_term_mo, 1, _rl_output_character_function);
+ enabled_meta = 0;
+ }
#endif
}
void
-_rl_control_keypad (on)
- int on;
+_rl_control_keypad (int on)
{
#if !defined (__DJGPP__)
if (on && _rl_term_ks)
cursor. Overwrite mode gets a very visible cursor. Only does
anything if we have both capabilities. */
void
-_rl_set_cursor (im, force)
- int im, force;
+_rl_set_cursor (int im, int force)
{
#ifndef __MSDOS__
if (_rl_term_ve && _rl_term_vs)
projects / deliverable / binutils-gdb.git / blobdiff