| /**************************************************************************** |
| * Copyright (c) 1998-2013,2014 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> |
| |
| #ifndef CUR |
| #define CUR SP_TERMTYPE |
| #endif |
| |
| #include <tic.h> |
| |
| MODULE_ID("$Id: lib_newterm.c,v 1.92 2014/04/26 18:00:39 tom Exp $") |
| |
| #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 ? 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 ( |
| 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)) || |
| USE_KLIBC_KBD; |
| #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->td_scinit(SP_PARM); |
| #else /* ! USE_TERM_DRIVER */ |
| /* |
| * 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); |
| #if USE_ITALIC |
| SP_PARM->_use_ritm = SGR0_TEST(exit_italics_mode); |
| #endif |
| |
| /* compute movement costs so we can do better move optimization */ |
| _nc_mvcur_init(); |
| |
| /* initialize terminal to a sane state */ |
| _nc_screen_init(); |
| #endif /* USE_TERM_DRIVER */ |
| |
| /* 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 |
