diff options
Diffstat (limited to 'terminal.c')
| -rw-r--r-- | terminal.c | 280 |
1 files changed, 156 insertions, 124 deletions
@@ -76,9 +76,6 @@ 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 @@ -87,27 +84,36 @@ 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; +char *_rl_term_clreol; +char *_rl_term_clrpag; +char *_rl_term_cr; +char *_rl_term_backspace; +char *_rl_term_goto; +char *_rl_term_pc; /* Non-zero if we determine that the terminal can do character insertion. */ -int terminal_can_insert = 0; +int _rl_terminal_can_insert = 0; /* How to insert characters. */ -char *term_im, *term_ei, *term_ic, *term_ip, *term_IC; +char *_rl_term_im; +char *_rl_term_ei; +char *_rl_term_ic; +char *_rl_term_ip; +char *_rl_term_IC; /* How to delete characters. */ -char *term_dc, *term_DC; +char *_rl_term_dc; +char *_rl_term_DC; #if defined (HACK_TERMCAP_MOTION) -char *term_forward_char; +char *_rl_term_forward_char; #endif /* HACK_TERMCAP_MOTION */ /* How to go up a line. */ -char *term_up; +char *_rl_term_up; -/* A visible bell, if the terminal can be made to flash the screen. */ -static char *visible_bell; +/* A visible bell; char if the terminal can be made to flash the screen. */ +static char *_rl_visible_bell; /* Non-zero means the terminal can auto-wrap lines. */ int _rl_term_autowrap; @@ -116,20 +122,26 @@ int _rl_term_autowrap; 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; + terminal has one. */ +static char *_rl_term_mm; +static char *_rl_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; +static char *_rl_term_ku; +static char *_rl_term_kd; +static char *_rl_term_kr; +static char *_rl_term_kl; /* How to initialize and reset the arrow keys, if this terminal has any. */ -static char *term_ks, *term_ke; +static char *_rl_term_ks; +static char *_rl_term_ke; /* The key sequences sent by the Home and End keys, if any. */ -static char *term_kh, *term_kH; +static char *_rl_term_kh; +static char *_rl_term_kH; /* Variables that hold the screen dimensions, used by the display code. */ -int screenwidth, screenheight, screenchars; +int _rl_screenwidth, _rl_screenheight, _rl_screenchars; /* Non-zero means the user wants to enable the keypad. */ int _rl_enable_keypad; @@ -169,73 +181,93 @@ _rl_get_screen_size (tty, ignore_env) #if defined (TIOCGWINSZ) if (ioctl (tty, TIOCGWINSZ, &window_size) == 0) { - screenwidth = (int) window_size.ws_col; - screenheight = (int) window_size.ws_row; + _rl_screenwidth = (int) window_size.ws_col; + _rl_screenheight = (int) window_size.ws_row; } #endif /* TIOCGWINSZ */ #if defined (__EMX__) - _emx_get_screensize (&screenwidth, &screenheight); + _emx_get_screensize (&_rl_screenwidth, &_rl_screenheight); #endif /* Environment variable COLUMNS overrides setting of "co" if IGNORE_ENV is unset. */ - if (screenwidth <= 0) + if (_rl_screenwidth <= 0) { - if (ignore_env == 0 && (ss = get_env_value ("COLUMNS"))) - screenwidth = atoi (ss); + if (ignore_env == 0 && (ss = sh_get_env_value ("COLUMNS"))) + _rl_screenwidth = atoi (ss); #if !defined (__DJGPP__) - if (screenwidth <= 0 && term_string_buffer) - screenwidth = tgetnum ("co"); + if (_rl_screenwidth <= 0 && term_string_buffer) + _rl_screenwidth = tgetnum ("co"); #endif } /* Environment variable LINES overrides setting of "li" if IGNORE_ENV is unset. */ - if (screenheight <= 0) + if (_rl_screenheight <= 0) { - if (ignore_env == 0 && (ss = get_env_value ("LINES"))) - screenheight = atoi (ss); + if (ignore_env == 0 && (ss = sh_get_env_value ("LINES"))) + _rl_screenheight = atoi (ss); #if !defined (__DJGPP__) - if (screenheight <= 0 && term_string_buffer) - screenheight = tgetnum ("li"); + if (_rl_screenheight <= 0 && term_string_buffer) + _rl_screenheight = tgetnum ("li"); #endif } /* If all else fails, default to 80x24 terminal. */ - if (screenwidth <= 1) - screenwidth = 80; + if (_rl_screenwidth <= 1) + _rl_screenwidth = 80; - if (screenheight <= 0) - screenheight = 24; + if (_rl_screenheight <= 0) + _rl_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); + sh_set_lines_and_columns (_rl_screenheight, _rl_screenwidth); if (_rl_term_autowrap == 0) - screenwidth--; + _rl_screenwidth--; - screenchars = screenwidth * screenheight; + _rl_screenchars = _rl_screenwidth * _rl_screenheight; } void _rl_set_screen_size (rows, cols) int rows, cols; { - screenheight = rows; - screenwidth = cols; + if (rows == 0 || cols == 0) + return; + + _rl_screenheight = rows; + _rl_screenwidth = cols; if (_rl_term_autowrap == 0) - screenwidth--; + _rl_screenwidth--; - screenchars = screenwidth * screenheight; + _rl_screenchars = _rl_screenwidth * _rl_screenheight; +} + +void +rl_set_screen_size (rows, cols) + int rows, cols; +{ + _rl_set_screen_size (rows, cols); } void +rl_get_screen_size (rows, cols) + int *rows, *cols; +{ + if (rows) + *rows = _rl_screenheight; + if (cols) + *cols = _rl_screenwidth; +} + +void rl_resize_terminal () { if (readline_echoing_p) @@ -246,7 +278,7 @@ rl_resize_terminal () } struct _tc_string { - char *tc_var; + const char *tc_var; char **tc_value; }; @@ -254,32 +286,32 @@ struct _tc_string { 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 }, + { "DC", &_rl_term_DC }, + { "IC", &_rl_term_IC }, + { "ce", &_rl_term_clreol }, + { "cl", &_rl_term_clrpag }, + { "cr", &_rl_term_cr }, + { "dc", &_rl_term_dc }, + { "ei", &_rl_term_ei }, + { "ic", &_rl_term_ic }, + { "im", &_rl_term_im }, + { "kd", &_rl_term_kd }, + { "kh", &_rl_term_kh }, /* home */ + { "kH", &_rl_term_kH }, /* end */ + { "kl", &_rl_term_kl }, + { "kr", &_rl_term_kr }, + { "ku", &_rl_term_ku }, + { "ks", &_rl_term_ks }, + { "ke", &_rl_term_ke }, + { "le", &_rl_term_backspace }, + { "mm", &_rl_term_mm }, + { "mo", &_rl_term_mo }, #if defined (HACK_TERMCAP_MOTION) - { "nd", &term_forward_char }, + { "nd", &_rl_term_forward_char }, #endif - { "pc", &term_pc }, - { "up", &term_up }, - { "vb", &visible_bell }, + { "pc", &_rl_term_pc }, + { "up", &_rl_term_up }, + { "vb", &_rl_visible_bell }, }; #define NUM_TC_STRINGS (sizeof (tc_strings) / sizeof (struct _tc_string)) @@ -304,16 +336,17 @@ get_term_capabilities (bp) int _rl_init_terminal_io (terminal_name) - char *terminal_name; + const char *terminal_name; { - char *term, *buffer; + const char *term; + char *buffer; int tty, tgetent_ret; Keymap xkeymap; - term = terminal_name ? terminal_name : get_env_value ("TERM"); - term_clrpag = term_cr = term_clreol = (char *)NULL; + term = terminal_name ? terminal_name : sh_get_env_value ("TERM"); + _rl_term_clrpag = _rl_term_cr = _rl_term_clreol = (char *)NULL; tty = rl_instream ? fileno (rl_instream) : 0; - screenwidth = screenheight = 0; + _rl_screenwidth = _rl_screenheight = 0; if (term == 0) term = "dumb"; @@ -344,41 +377,40 @@ _rl_init_terminal_io (terminal_name) FREE (term_buffer); buffer = term_buffer = term_string_buffer = (char *)NULL; - dumb_term = 1; _rl_term_autowrap = 0; /* used by _rl_get_screen_size */ #if defined (__EMX__) - _emx_get_screensize (&screenwidth, &screenheight); - screenwidth--; + _emx_get_screensize (&_rl_screenwidth, &_rl_screenheight); + _rl_screenwidth--; #else /* !__EMX__ */ _rl_get_screen_size (tty, 0); #endif /* !__EMX__ */ /* Defaults. */ - if (screenwidth <= 0 || screenheight <= 0) + if (_rl_screenwidth <= 0 || _rl_screenheight <= 0) { - screenwidth = 79; - screenheight = 24; + _rl_screenwidth = 79; + _rl_screenheight = 24; } /* Everything below here is used by the redisplay code (tputs). */ - 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; - term_ku = term_kd = term_kl = term_kr = (char *)NULL; - term_mm = term_mo = (char *)NULL; + _rl_screenchars = _rl_screenwidth * _rl_screenheight; + _rl_term_cr = "\r"; + _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_mm = _rl_term_mo = (char *)NULL; #if defined (HACK_TERMCAP_MOTION) term_forward_char = (char *)NULL; #endif - terminal_can_insert = term_has_meta = 0; + _rl_terminal_can_insert = term_has_meta = 0; /* Reasonable defaults for tgoto(). Readline currently only uses - tgoto if term_IC or 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... */ PC = '\0'; - BC = term_backspace = "\b"; - UP = term_up; + BC = _rl_term_backspace = "\b"; + UP = _rl_term_up; return 0; } @@ -387,12 +419,12 @@ _rl_init_terminal_io (terminal_name) /* 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; + PC = _rl_term_pc ? *_rl_term_pc : 0; + BC = _rl_term_backspace; + UP = _rl_term_up; - if (!term_cr) - term_cr = "\r"; + if (!_rl_term_cr) + _rl_term_cr = "\r"; _rl_term_autowrap = tgetflag ("am") && tgetflag ("xn"); @@ -402,36 +434,36 @@ _rl_init_terminal_io (terminal_name) 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); + _rl_terminal_can_insert = (_rl_term_IC || _rl_term_im || _rl_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; + _rl_term_mm = _rl_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 (_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_if_unbound (term_kh, rl_beg_of_line); /* Home */ - _rl_bind_if_unbound (term_kH, rl_end_of_line); /* End */ + _rl_bind_if_unbound (_rl_term_kh, rl_beg_of_line); /* Home */ + _rl_bind_if_unbound (_rl_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 (_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_if_unbound (term_kh, rl_beg_of_line); /* Home */ - _rl_bind_if_unbound (term_kH, rl_end_of_line); /* End */ + _rl_bind_if_unbound (_rl_term_kh, rl_beg_of_line); /* Home */ + _rl_bind_if_unbound (_rl_term_kH, rl_end_of_line); /* End */ #endif /* VI_MODE */ _rl_keymap = xkeymap; @@ -441,7 +473,7 @@ _rl_init_terminal_io (terminal_name) char * rl_get_termcap (cap) - char *cap; + const char *cap; { register int i; @@ -459,7 +491,7 @@ rl_get_termcap (cap) has changed. */ int rl_reset_terminal (terminal_name) - char *terminal_name; + const char *terminal_name; { _rl_init_terminal_io (terminal_name); return 0; @@ -485,7 +517,7 @@ _rl_output_character_function (c) /* Write COUNT characters from STRING to the output stream. */ void _rl_output_some_chars (string, count) - char *string; + const char *string; int count; { fwrite (string, 1, count, _rl_out_stream); @@ -498,9 +530,9 @@ _rl_backspace (count) { register int i; - if (term_backspace) + if (_rl_term_backspace) for (i = 0; i < count; i++) - tputs (term_backspace, 1, _rl_output_character_function); + tputs (_rl_term_backspace, 1, _rl_output_character_function); else for (i = 0; i < count; i++) putc ('\b', _rl_out_stream); @@ -509,11 +541,11 @@ _rl_backspace (count) /* Move to the start of the next line. */ int -crlf () +rl_crlf () { #if defined (NEW_TTY_DRIVER) - if (term_cr) - tputs (term_cr, 1, _rl_output_character_function); + if (_rl_term_cr) + tputs (_rl_term_cr, 1, _rl_output_character_function); #endif /* NEW_TTY_DRIVER */ putc ('\n', _rl_out_stream); return 0; @@ -521,7 +553,7 @@ crlf () /* Ring the terminal bell. */ int -ding () +rl_ding () { if (readline_echoing_p) { @@ -531,9 +563,9 @@ ding () default: break; case VISIBLE_BELL: - if (visible_bell) + if (_rl_visible_bell) { - tputs (visible_bell, 1, _rl_output_character_function); + tputs (_rl_visible_bell, 1, _rl_output_character_function); break; } /* FALLTHROUGH */ @@ -557,8 +589,8 @@ void _rl_enable_meta_key () { #if !defined (__DJGPP__) - if (term_has_meta && term_mm) - tputs (term_mm, 1, _rl_output_character_function); + if (term_has_meta && _rl_term_mm) + tputs (_rl_term_mm, 1, _rl_output_character_function); #endif } @@ -567,9 +599,9 @@ _rl_control_keypad (on) int on; { #if !defined (__DJGPP__) - 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); + if (on && _rl_term_ks) + tputs (_rl_term_ks, 1, _rl_output_character_function); + else if (!on && _rl_term_ke) + tputs (_rl_term_ke, 1, _rl_output_character_function); #endif } |