mirror of
https://github.com/Aigor44/ncursesw-morphos.git
synced 2024-12-27 07:49:06 +08:00
3a0d9d27e0
+ quiet some pedantic gcc warnings. + modify _nc_wgetch() to check for a -1 in the fifo, e.g., after a SIGWINCH, and discard that value, to avoid confusing application (patch by Eygene Ryabinkin, FreeBSD bin/136223).
351 lines
10 KiB
C
351 lines
10 KiB
C
/****************************************************************************
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* Copyright (c) 1998-2008,2009 Free Software Foundation, Inc. *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a *
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* copy of this software and associated documentation files (the *
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* "Software"), to deal in the Software without restriction, including *
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* without limitation the rights to use, copy, modify, merge, publish, *
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* distribute, distribute with modifications, sublicense, and/or sell *
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* copies of the Software, and to permit persons to whom the Software is *
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* furnished to do so, subject to the following conditions: *
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* *
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* The above copyright notice and this permission notice shall be included *
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* in all copies or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
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* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
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* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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* *
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* Except as contained in this notice, the name(s) of the above copyright *
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* holders shall not be used in advertising or otherwise to promote the *
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* sale, use or other dealings in this Software without prior written *
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* authorization. *
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****************************************************************************/
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/****************************************************************************
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* Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
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* and: Eric S. Raymond <esr@snark.thyrsus.com> *
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* and: Thomas E. Dickey 1996-on *
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* and: Juergen Pfeifer 2009 *
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****************************************************************************/
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/*
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** lib_newterm.c
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**
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** The newterm() function.
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**
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*/
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#include <curses.priv.h>
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#if SVR4_TERMIO && !defined(_POSIX_SOURCE)
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#define _POSIX_SOURCE
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#endif
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#ifndef CUR
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#define CUR SP_TERMTYPE
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#endif
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#include <tic.h>
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MODULE_ID("$Id: lib_newterm.c,v 1.82 2009/10/24 22:52:04 tom Exp $")
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#ifdef USE_TERM_DRIVER
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#define NumLabels InfoOf(SP_PARM).numlabels
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#else
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#define NumLabels num_labels
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#endif
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#ifndef ONLCR /* Allows compilation under the QNX 4.2 OS */
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#define ONLCR 0
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#endif
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/*
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* SVr4/XSI Curses specify that hardware echo is turned off in initscr, and not
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* restored during the curses session. The library simulates echo in software.
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* (The behavior is unspecified if the application enables hardware echo).
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*
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* The newterm function also initializes terminal settings, and since initscr
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* is supposed to behave as if it calls newterm, we do it here.
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*/
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static NCURSES_INLINE int
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_nc_initscr(NCURSES_SP_DCL0)
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{
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int result = ERR;
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TERMINAL *term = TerminalOf(SP_PARM);
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/* for extended XPG4 conformance requires cbreak() at this point */
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/* (SVr4 curses does this anyway) */
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if (NCURSES_SP_NAME(cbreak) (NCURSES_SP_ARG) == OK) {
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TTY buf;
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buf = term->Nttyb;
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#ifdef TERMIOS
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buf.c_lflag &= ~(ECHO | ECHONL);
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buf.c_iflag &= ~(ICRNL | INLCR | IGNCR);
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buf.c_oflag &= ~(ONLCR);
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#elif HAVE_SGTTY_H
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buf.sg_flags &= ~(ECHO | CRMOD);
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#else
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memset(&buf, 0, sizeof(buf));
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#endif
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result = NCURSES_SP_NAME(_nc_set_tty_mode) (NCURSES_SP_ARGx &buf);
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if (result == OK)
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term->Nttyb = buf;
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}
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return result;
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}
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/*
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* filter() has to be called before either initscr() or newterm(), so there is
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* apparently no way to make this flag apply to some terminals and not others,
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* aside from possibly delaying a filter() call until some terminals have been
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* initialized.
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*/
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NCURSES_EXPORT(void)
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NCURSES_SP_NAME(filter) (NCURSES_SP_DCL0)
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{
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START_TRACE();
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T((T_CALLED("filter(%p)"), (void *) SP_PARM));
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#if NCURSES_SP_FUNCS
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if (IsPreScreen(SP_PARM)) {
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SP_PARM->_filtered = TRUE;
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}
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#else
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_nc_prescreen.filter_mode = TRUE;
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#endif
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returnVoid;
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}
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#if NCURSES_SP_FUNCS
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NCURSES_EXPORT(void)
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filter(void)
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{
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START_TRACE();
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T((T_CALLED("filter()")));
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_nc_prescreen.filter_mode = TRUE;
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returnVoid;
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}
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#endif
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#if NCURSES_EXT_FUNCS
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/*
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* An extension, allowing the application to open a new screen without
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* requiring it to also be filtered.
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*/
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NCURSES_EXPORT(void)
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NCURSES_SP_NAME(nofilter) (NCURSES_SP_DCL0)
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{
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START_TRACE();
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T((T_CALLED("nofilter(%p)"), (void *) SP_PARM));
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#if NCURSES_SP_FUNCS
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if (IsPreScreen(SP_PARM)) {
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SP_PARM->_filtered = FALSE;
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}
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#else
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_nc_prescreen.filter_mode = FALSE;
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#endif
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returnVoid;
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}
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#if NCURSES_SP_FUNCS
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NCURSES_EXPORT(void)
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nofilter(void)
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{
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START_TRACE();
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T((T_CALLED("nofilter()")));
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_nc_prescreen.filter_mode = FALSE;
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returnVoid;
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}
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#endif
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#endif /* NCURSES_EXT_FUNCS */
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NCURSES_EXPORT(SCREEN *)
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NCURSES_SP_NAME(newterm) (NCURSES_SP_DCLx
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NCURSES_CONST char *name,
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FILE *ofp,
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FILE *ifp)
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{
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int value;
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int errret;
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SCREEN *result = 0;
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SCREEN *current;
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TERMINAL *its_term;
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FILE *_ofp = ofp ? ofp : stdout;
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FILE *_ifp = ifp ? ifp : stdin;
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int cols;
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int slk_format;
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int filter_mode;
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TERMINAL *new_term = 0;
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START_TRACE();
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T((T_CALLED("newterm(%p, \"%s\", %p,%p)"),
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(void *) SP_PARM,
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name,
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(void *) ofp,
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(void *) ifp));
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#if NCURSES_SP_FUNCS
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assert(SP_PARM != 0);
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if (SP_PARM == 0)
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returnSP(SP_PARM);
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#endif
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_nc_init_pthreads();
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_nc_lock_global(curses);
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current = CURRENT_SCREEN;
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its_term = (current ? current->_term : 0);
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/* this loads the capability entry, then sets LINES and COLS */
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if (
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#if NCURSES_SP_FUNCS
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SP_PARM->_prescreen &&
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#endif
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TINFO_SETUP_TERM(&new_term, name,
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fileno(_ofp), &errret, FALSE) != ERR) {
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_nc_set_screen(0);
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#ifdef USE_TERM_DRIVER
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assert(new_term != 0);
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#endif
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#if NCURSES_SP_FUNCS
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slk_format = SP_PARM->slk_format;
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filter_mode = SP_PARM->_filtered;
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#else
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slk_format = _nc_globals.slk_format;
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filter_mode = _nc_prescreen.filter_mode;
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#endif
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/*
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* This actually allocates the screen structure, and saves the original
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* terminal settings.
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*/
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if (NCURSES_SP_NAME(_nc_setupscreen) (
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#if NCURSES_SP_FUNCS
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&SP_PARM,
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#endif
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*(ptrLines(SP_PARM)),
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*(ptrCols(SP_PARM)),
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_ofp,
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filter_mode,
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slk_format) == ERR) {
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_nc_set_screen(current);
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result = 0;
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} else {
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#ifdef USE_TERM_DRIVER
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TERMINAL_CONTROL_BLOCK *TCB;
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#elif !NCURSES_SP_FUNCS
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SP_PARM = CURRENT_SCREEN;
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#endif
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assert(SP_PARM != 0);
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cols = *(ptrCols(SP_PARM));
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#ifdef USE_TERM_DRIVER
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_nc_set_screen(SP_PARM);
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TCB = (TERMINAL_CONTROL_BLOCK *) new_term;
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TCB->csp = SP_PARM;
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#endif
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/*
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* In setupterm() we did a set_curterm(), but it was before we set
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* CURRENT_SCREEN. So the "current" screen's terminal pointer was
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* overwritten with a different terminal. Later, in
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* _nc_setupscreen(), we set CURRENT_SCREEN and the terminal
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* pointer in the new screen.
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*
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* Restore the terminal-pointer for the pre-existing screen, if
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* any.
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*/
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if (current)
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current->_term = its_term;
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#ifdef USE_TERM_DRIVER
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SP_PARM->_term = new_term;
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#else
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new_term = SP_PARM->_term;
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#endif
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/* allow user to set maximum escape delay from the environment */
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if ((value = _nc_getenv_num("ESCDELAY")) >= 0) {
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NCURSES_SP_NAME(set_escdelay) (NCURSES_SP_ARGx value);
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}
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/* if the terminal type has real soft labels, set those up */
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if (slk_format && NumLabels > 0 && SLK_STDFMT(slk_format))
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_nc_slk_initialize(SP_PARM->_stdscr, cols);
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SP_PARM->_ifd = fileno(_ifp);
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NCURSES_SP_NAME(typeahead) (NCURSES_SP_ARGx fileno(_ifp));
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#ifdef TERMIOS
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SP_PARM->_use_meta = ((new_term->Ottyb.c_cflag & CSIZE) == CS8 &&
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!(new_term->Ottyb.c_iflag & ISTRIP));
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#else
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SP_PARM->_use_meta = FALSE;
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#endif
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SP_PARM->_endwin = FALSE;
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#ifndef USE_TERM_DRIVER
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/*
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* Check whether we can optimize scrolling under dumb terminals in
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* case we do not have any of these capabilities, scrolling
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* optimization will be useless.
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*/
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SP_PARM->_scrolling = ((scroll_forward && scroll_reverse) ||
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((parm_rindex ||
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parm_insert_line ||
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insert_line) &&
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(parm_index ||
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parm_delete_line ||
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delete_line)));
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#endif
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NCURSES_SP_NAME(baudrate) (NCURSES_SP_ARG); /* sets a field in the screen structure */
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SP_PARM->_keytry = 0;
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/* compute movement costs so we can do better move optimization */
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#ifdef USE_TERM_DRIVER
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TCBOf(SP_PARM)->drv->scinit(SP_PARM);
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#else
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/*
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* Check for mismatched graphic-rendition capabilities. Most SVr4
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* terminfo trees contain entries that have rmul or rmso equated to
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* sgr0 (Solaris curses copes with those entries). We do this only
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* for curses, since many termcap applications assume that
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* smso/rmso and smul/rmul are paired, and will not function
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* properly if we remove rmso or rmul. Curses applications
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* shouldn't be looking at this detail.
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*/
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#define SGR0_TEST(mode) (mode != 0) && (exit_attribute_mode == 0 || strcmp(mode, exit_attribute_mode))
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SP_PARM->_use_rmso = SGR0_TEST(exit_standout_mode);
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SP_PARM->_use_rmul = SGR0_TEST(exit_underline_mode);
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/* compute movement costs so we can do better move optimization */
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_nc_mvcur_init();
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/* initialize terminal to a sane state */
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_nc_screen_init();
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#endif
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/* Initialize the terminal line settings. */
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_nc_initscr(NCURSES_SP_ARG);
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_nc_signal_handler(TRUE);
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result = SP_PARM;
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}
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}
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_nc_unlock_global(curses);
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returnSP(result);
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}
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#if NCURSES_SP_FUNCS
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NCURSES_EXPORT(SCREEN *)
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newterm(NCURSES_CONST char *name, FILE *ofp, FILE *ifp)
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{
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return NCURSES_SP_NAME(newterm) (CURRENT_SCREEN_PRE, name, ofp, ifp);
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}
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#endif
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