diff options
Diffstat (limited to 'ncurses-5.9/ncurses/base/lib_newterm.c')
| -rw-r--r-- | ncurses-5.9/ncurses/base/lib_newterm.c | 351 |
1 files changed, 351 insertions, 0 deletions
diff --git a/ncurses-5.9/ncurses/base/lib_newterm.c b/ncurses-5.9/ncurses/base/lib_newterm.c new file mode 100644 index 0000000..8fded0c --- /dev/null +++ b/ncurses-5.9/ncurses/base/lib_newterm.c @@ -0,0 +1,351 @@ +/**************************************************************************** + * Copyright (c) 1998-2009,2010 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 <zmbenhal@netcom.com> 1992,1995 * + * and: Eric S. Raymond <esr@snark.thyrsus.com> * + * and: Thomas E. Dickey 1996-on * + * and: Juergen Pfeifer 2009 * + ****************************************************************************/ + +/* +** lib_newterm.c +** +** The newterm() function. +** +*/ + +#include <curses.priv.h> + +#if SVR4_TERMIO && !defined(_POSIX_SOURCE) +#define _POSIX_SOURCE +#endif + +#ifndef CUR +#define CUR SP_TERMTYPE +#endif + +#include <tic.h> + +MODULE_ID("$Id$") + +#ifdef USE_TERM_DRIVER +#define NumLabels InfoOf(SP_PARM).numlabels +#else +#define NumLabels num_labels +#endif + +#ifndef ONLCR /* Allows compilation under the QNX 4.2 OS */ +#define ONLCR 0 +#endif + +/* + * 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 NCURSES_INLINE int +_nc_initscr(NCURSES_SP_DCL0) +{ + int result = ERR; + TERMINAL *term = TerminalOf(SP_PARM); + + /* for extended XPG4 conformance requires cbreak() at this point */ + /* (SVr4 curses does this anyway) */ + if (NCURSES_SP_NAME(cbreak) (NCURSES_SP_ARG) == OK) { + TTY buf; + + buf = term->Nttyb; +#ifdef TERMIOS + buf.c_lflag &= (unsigned) ~(ECHO | ECHONL); + buf.c_iflag &= (unsigned) ~(ICRNL | INLCR | IGNCR); + buf.c_oflag &= (unsigned) ~(ONLCR); +#elif HAVE_SGTTY_H + buf.sg_flags &= ~(ECHO | CRMOD); +#else + memset(&buf, 0, sizeof(buf)); +#endif + result = NCURSES_SP_NAME(_nc_set_tty_mode) (NCURSES_SP_ARGx &buf); + if (result == OK) + term->Nttyb = buf; + } + return result; +} + +/* + * 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. + */ +NCURSES_EXPORT(void) +NCURSES_SP_NAME(filter) (NCURSES_SP_DCL0) +{ + START_TRACE(); + T((T_CALLED("filter(%p)"), (void *) SP_PARM)); +#if NCURSES_SP_FUNCS + if (IsPreScreen(SP_PARM)) { + SP_PARM->_filtered = TRUE; + } +#else + _nc_prescreen.filter_mode = TRUE; +#endif + returnVoid; +} + +#if NCURSES_SP_FUNCS +NCURSES_EXPORT(void) +filter(void) +{ + START_TRACE(); + T((T_CALLED("filter()"))); + _nc_prescreen.filter_mode = TRUE; + returnVoid; +} +#endif + +#if NCURSES_EXT_FUNCS +/* + * An extension, allowing the application to open a new screen without + * requiring it to also be filtered. + */ +NCURSES_EXPORT(void) +NCURSES_SP_NAME(nofilter) (NCURSES_SP_DCL0) +{ + START_TRACE(); + T((T_CALLED("nofilter(%p)"), (void *) SP_PARM)); +#if NCURSES_SP_FUNCS + if (IsPreScreen(SP_PARM)) { + SP_PARM->_filtered = FALSE; + } +#else + _nc_prescreen.filter_mode = FALSE; +#endif + returnVoid; +} + +#if NCURSES_SP_FUNCS +NCURSES_EXPORT(void) +nofilter(void) +{ + START_TRACE(); + T((T_CALLED("nofilter()"))); + _nc_prescreen.filter_mode = FALSE; + returnVoid; +} +#endif +#endif /* NCURSES_EXT_FUNCS */ + +NCURSES_EXPORT(SCREEN *) +NCURSES_SP_NAME(newterm) (NCURSES_SP_DCLx + NCURSES_CONST char *name, + FILE *ofp, + FILE *ifp) +{ + int value; + int errret; + SCREEN *result = 0; + SCREEN *current; + TERMINAL *its_term; + FILE *_ofp = ofp ? ofp : stdout; + FILE *_ifp = ifp ? ifp : stdin; + int cols; + int slk_format; + int filter_mode; + TERMINAL *new_term = 0; + + START_TRACE(); + T((T_CALLED("newterm(%p, \"%s\", %p,%p)"), + (void *) SP_PARM, + name, + (void *) ofp, + (void *) ifp)); + +#if NCURSES_SP_FUNCS + assert(SP_PARM != 0); + if (SP_PARM == 0) + returnSP(SP_PARM); +#endif + + _nc_init_pthreads(); + _nc_lock_global(curses); + + current = CURRENT_SCREEN; + its_term = (current ? current->_term : 0); + + INIT_TERM_DRIVER(); + /* this loads the capability entry, then sets LINES and COLS */ + if ( +#if NCURSES_SP_FUNCS + SP_PARM->_prescreen && +#endif + TINFO_SETUP_TERM(&new_term, name, + fileno(_ofp), &errret, FALSE) != ERR) { + + _nc_set_screen(0); +#ifdef USE_TERM_DRIVER + assert(new_term != 0); +#endif + +#if NCURSES_SP_FUNCS + slk_format = SP_PARM->slk_format; + filter_mode = SP_PARM->_filtered; +#else + slk_format = _nc_globals.slk_format; + filter_mode = _nc_prescreen.filter_mode; +#endif + + /* + * This actually allocates the screen structure, and saves the original + * terminal settings. + */ + if (NCURSES_SP_NAME(_nc_setupscreen) ( +#if NCURSES_SP_FUNCS + &SP_PARM, +#endif + *(ptrLines(SP_PARM)), + *(ptrCols(SP_PARM)), + _ofp, + filter_mode, + slk_format) == ERR) { + _nc_set_screen(current); + result = 0; + } else { +#ifdef USE_TERM_DRIVER + TERMINAL_CONTROL_BLOCK *TCB; +#elif !NCURSES_SP_FUNCS + _nc_set_screen(CURRENT_SCREEN); +#endif + assert(SP_PARM != 0); + cols = *(ptrCols(SP_PARM)); +#ifdef USE_TERM_DRIVER + _nc_set_screen(SP_PARM); + TCB = (TERMINAL_CONTROL_BLOCK *) new_term; + TCB->csp = SP_PARM; +#endif + /* + * In setupterm() we did a set_curterm(), but it was before we set + * CURRENT_SCREEN. So the "current" screen's terminal pointer was + * overwritten with a different terminal. Later, in + * _nc_setupscreen(), we set CURRENT_SCREEN and the terminal + * pointer in the new screen. + * + * Restore the terminal-pointer for the pre-existing screen, if + * any. + */ + if (current) + current->_term = its_term; + +#ifdef USE_TERM_DRIVER + SP_PARM->_term = new_term; +#else + new_term = SP_PARM->_term; +#endif + + /* allow user to set maximum escape delay from the environment */ + if ((value = _nc_getenv_num("ESCDELAY")) >= 0) { + NCURSES_SP_NAME(set_escdelay) (NCURSES_SP_ARGx value); + } + + /* if the terminal type has real soft labels, set those up */ + if (slk_format && NumLabels > 0 && SLK_STDFMT(slk_format)) + _nc_slk_initialize(StdScreen(SP_PARM), cols); + + SP_PARM->_ifd = fileno(_ifp); + NCURSES_SP_NAME(typeahead) (NCURSES_SP_ARGx fileno(_ifp)); +#ifdef TERMIOS + SP_PARM->_use_meta = ((new_term->Ottyb.c_cflag & CSIZE) == CS8 && + !(new_term->Ottyb.c_iflag & ISTRIP)); +#else + SP_PARM->_use_meta = FALSE; +#endif + SP_PARM->_endwin = FALSE; +#ifndef USE_TERM_DRIVER + /* + * 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_PARM->_scrolling = ((scroll_forward && scroll_reverse) || + ((parm_rindex || + parm_insert_line || + insert_line) && + (parm_index || + parm_delete_line || + delete_line))); +#endif + + NCURSES_SP_NAME(baudrate) (NCURSES_SP_ARG); /* sets a field in the screen structure */ + + SP_PARM->_keytry = 0; + + /* compute movement costs so we can do better move optimization */ +#ifdef USE_TERM_DRIVER + TCBOf(SP_PARM)->drv->scinit(SP_PARM); +#else + /* + * Check for mismatched graphic-rendition capabilities. Most SVr4 + * 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 detail. + */ +#define SGR0_TEST(mode) (mode != 0) && (exit_attribute_mode == 0 || strcmp(mode, exit_attribute_mode)) + SP_PARM->_use_rmso = SGR0_TEST(exit_standout_mode); + SP_PARM->_use_rmul = SGR0_TEST(exit_underline_mode); + + /* compute movement costs so we can do better move optimization */ + _nc_mvcur_init(); + + /* initialize terminal to a sane state */ + _nc_screen_init(); +#endif + + /* Initialize the terminal line settings. */ + _nc_initscr(NCURSES_SP_ARG); + + _nc_signal_handler(TRUE); + result = SP_PARM; + } + } + _nc_unlock_global(curses); + returnSP(result); +} + +#if NCURSES_SP_FUNCS +NCURSES_EXPORT(SCREEN *) +newterm(NCURSES_CONST char *name, FILE *ofp, FILE *ifp) +{ + return NCURSES_SP_NAME(newterm) (CURRENT_SCREEN_PRE, name, ofp, ifp); +} +#endif |