X-Git-Url: http://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=ncurses%2Flib_newterm.c;h=ea5333d898ea6dfecbd0d8d7377d96b0b56917a0;hp=aa5b587984931024e2a75b66510ad1299e88eb5d;hb=refs%2Ftags%2Fv4.2;hpb=3a9b6a3bf0269231bef7de74757a910dedd04e0c diff --git a/ncurses/lib_newterm.c b/ncurses/lib_newterm.c index aa5b5879..ea5333d8 100644 --- a/ncurses/lib_newterm.c +++ b/ncurses/lib_newterm.c @@ -1,23 +1,35 @@ - -/*************************************************************************** -* COPYRIGHT NOTICE * -**************************************************************************** -* ncurses is copyright (C) 1992-1995 * -* Zeyd M. Ben-Halim * -* zmbenhal@netcom.com * -* Eric S. Raymond * -* esr@snark.thyrsus.com * -* * -* Permission is hereby granted to reproduce and distribute ncurses * -* by any means and for any fee, whether alone or as part of a * -* larger distribution, in source or in binary form, PROVIDED * -* this notice is included with any such distribution, and is not * -* removed from any of its header files. Mention of ncurses in any * -* applications linked with it is highly appreciated. * -* * -* ncurses comes AS IS with no warranty, implied or expressed. * -* * -***************************************************************************/ +/**************************************************************************** + * Copyright (c) 1998 Free Software Foundation, Inc. * + * * + * Permission is hereby granted, free of charge, to any person obtaining a * + * copy of this software and associated documentation files (the * + * "Software"), to deal in the Software without restriction, including * + * without limitation the rights to use, copy, modify, merge, publish, * + * distribute, distribute with modifications, sublicense, and/or sell * + * copies of the Software, and to permit persons to whom the Software is * + * furnished to do so, subject to the following conditions: * + * * + * The above copyright notice and this permission notice shall be included * + * in all copies or substantial portions of the Software. * + * * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * + * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * + * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * + * * + * Except as contained in this notice, the name(s) of the above copyright * + * holders shall not be used in advertising or otherwise to promote the * + * sale, use or other dealings in this Software without prior written * + * authorization. * + ****************************************************************************/ + +/**************************************************************************** + * Author: Zeyd M. Ben-Halim 1992,1995 * + * and: Eric S. Raymond * + ****************************************************************************/ @@ -30,15 +42,48 @@ #include -#ifdef SVR4_TERMIO +#if defined(SVR4_TERMIO) && !defined(_POSIX_SOURCE) #define _POSIX_SOURCE #endif #include /* clear_screen, cup & friends, cur_term */ -MODULE_ID("$Id: lib_newterm.c,v 1.23 1997/03/30 01:42:01 tom Exp $") +MODULE_ID("$Id: lib_newterm.c,v 1.33 1998/02/11 12:13:57 tom Exp $") + +#ifndef ONLCR /* Allows compilation under the QNX 4.2 OS */ +#define ONLCR 0 +#endif -/* This should be moved to TERMINAL */ +/* + * SVr4/XSI Curses specify that hardware echo is turned off in initscr, and not + * restored during the curses session. The library simulates echo in software. + * (The behavior is unspecified if the application enables hardware echo). + * + * The newterm function also initializes terminal settings, and since initscr + * is supposed to behave as if it calls newterm, we do it here. + */ +static inline int _nc_initscr(void) +{ + /* for extended XPG4 conformance requires cbreak() at this point */ + /* (SVr4 curses does this anyway) */ + cbreak(); + +#ifdef TERMIOS + cur_term->Nttyb.c_lflag &= ~(ECHO|ECHONL); + cur_term->Nttyb.c_iflag &= ~(ICRNL|INLCR|IGNCR); + cur_term->Nttyb.c_oflag &= ~(ONLCR); +#else + cur_term->Nttyb.sg_flags &= ~(ECHO|CRMOD); +#endif + return _nc_set_curterm(&cur_term->Nttyb); +} + +/* + * filter() has to be called before either initscr() or newterm(), so there is + * apparently no way to make this flag apply to some terminals and not others, + * aside from possibly delaying a filter() call until some terminals have been + * initialized. + */ static int filter_mode = FALSE; void filter(void) @@ -49,6 +94,7 @@ void filter(void) SCREEN * newterm(const char *term, FILE *ofp, FILE *ifp) { int errret; +SCREEN* current; #ifdef TRACE char *t = getenv("NCURSES_TRACE"); @@ -60,12 +106,12 @@ char *t = getenv("NCURSES_TRACE"); /* this loads the capability entry, then sets LINES and COLS */ if (setupterm(term, fileno(ofp), &errret) == ERR) - return NULL; + return 0; /* * Check for mismatched graphic-rendition capabilities. Most SVr4 - * terminfo tree contain entries that have rmul or rmso equated to sgr0 - * (Solaris curses copes with those entries). We do this only for + * terminfo trees contain entries that have rmul or rmso equated to + * sgr0 (Solaris curses copes with those entries). We do this only for * curses, since many termcap applications assume that smso/rmso and * smul/rmul are paired, and will not function properly if we remove * rmso or rmul. Curses applications shouldn't be looking at this @@ -92,12 +138,12 @@ char *t = getenv("NCURSES_TRACE"); T(("TABSIZE = %d", TABSIZE)); #ifdef clear_screen - clear_screen = (char *)NULL; - cursor_down = parm_down_cursor = (char *)NULL; - cursor_address = (char *)NULL; - cursor_up = parm_up_cursor = (char *)NULL; - row_address = (char *)NULL; - + clear_screen = 0; + cursor_down = parm_down_cursor = 0; + cursor_address = 0; + cursor_up = parm_up_cursor = 0; + row_address = 0; + cursor_home = carriage_return; #endif /* clear_screen */ } @@ -112,13 +158,17 @@ char *t = getenv("NCURSES_TRACE"); if (_nc_slk_format) { if (ERR==_nc_ripoffline(-SLK_LINES, _nc_slk_initialize)) - return NULL; + return 0; } /* this actually allocates the screen structure, and saves the * original terminal settings. */ - if (_nc_setupscreen(LINES, COLS, ofp) == ERR) - return NULL; + current = SP; + _nc_set_screen(0); + if (_nc_setupscreen(LINES, COLS, ofp) == ERR) { + _nc_set_screen(current); + return 0; + } #ifdef num_labels /* if the terminal type has real soft labels, set those up */ @@ -137,15 +187,25 @@ char *t = getenv("NCURSES_TRACE"); #endif SP->_endwin = FALSE; + /* Check whether we can optimize scrolling under dumb terminals in case + * we do not have any of these capabilities, scrolling optimization + * will be useless. + */ + SP->_scrolling = ((scroll_forward && scroll_reverse) || + ((parm_rindex || parm_insert_line || insert_line) && + (parm_index || parm_delete_line || delete_line))); + baudrate(); /* sets a field in the SP structure */ + SP->_keytry = 0; + /* compute movement costs so we can do better move optimization */ _nc_mvcur_init(); _nc_signal_handler(TRUE); - /* open a connection to the screen's associated mouse, if any */ - _nc_mouse_init(SP); + /* initialize terminal to a sane state */ + _nc_screen_init(); /* Initialize the terminal line settings. */ _nc_initscr();