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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libcurses/base/lib_newterm.c	Lines:	0	53	0.0 %
Date:	2017-11-07	Branches:	0	48	0.0 %


/* $OpenBSD: lib_newterm.c,v 1.13 2010/01/12 23:22:06 nicm Exp $ */

/****************************************************************************
 * Copyright (c) 1998-2007,2008 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                 *
 ****************************************************************************/

/*
**	lib_newterm.c
**
**	The newterm() function.
**
*/

#include <curses.priv.h>

#if SVR4_TERMIO && !defined(_POSIX_SOURCE)
#define _POSIX_SOURCE
#endif

#include <term.h>		/* clear_screen, cup & friends, cur_term */
#include <tic.h>

MODULE_ID("$Id: lib_newterm.c,v 1.13 2010/01/12 23:22:06 nicm Exp $")

#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(void)
{
    int result = ERR;

    /* for extended XPG4 conformance requires cbreak() at this point */
    /* (SVr4 curses does this anyway) */
    if (cbreak() == OK) {
	TTY buf;

	buf = cur_term->Nttyb;
#ifdef TERMIOS
	buf.c_lflag &= ~(ECHO | ECHONL);
	buf.c_iflag &= ~(ICRNL | INLCR | IGNCR);
	buf.c_oflag &= ~(ONLCR);
#elif HAVE_SGTTY_H
	buf.sg_flags &= ~(ECHO | CRMOD);
#else
	memset(&buf, 0, sizeof(buf));
#endif
	if ((result = _nc_set_tty_mode(&buf)) == OK)
	    cur_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)
filter(void)
{
    START_TRACE();
    T((T_CALLED("filter")));
    _nc_prescreen.filter_mode = TRUE;
    returnVoid;
}

#if NCURSES_EXT_FUNCS
/*
 * An extension, allowing the application to open a new screen without
 * requiring it to also be filtered.
 */
NCURSES_EXPORT(void)
nofilter(void)
{
    START_TRACE();
    T((T_CALLED("nofilter")));
    _nc_prescreen.filter_mode = FALSE;
    returnVoid;
}
#endif

NCURSES_EXPORT(SCREEN *)
newterm(NCURSES_CONST char *name, FILE *ofp, FILE *ifp)
{
    int value;
    int errret;
    SCREEN *current;
    SCREEN *result = 0;
    TERMINAL *its_term;

    START_TRACE();
    T((T_CALLED("newterm(\"%s\",%p,%p)"), name, ofp, ifp));

    _nc_init_pthreads();
    _nc_lock_global(curses);

    current = SP;
    its_term = (SP ? SP->_term : 0);

    /* this loads the capability entry, then sets LINES and COLS */
    if (setupterm(name, fileno(ofp), &errret) != ERR) {
	int slk_format = _nc_globals.slk_format;

	/*
	 * This actually allocates the screen structure, and saves the original
	 * terminal settings.
	 */
	_nc_set_screen(0);

	/* allow user to set maximum escape delay from the environment */
	if ((value = _nc_getenv_num("ESCDELAY")) >= 0) {
	    set_escdelay(value);
	}

	if (_nc_setupscreen(LINES,
			    COLS,
			    ofp,
			    _nc_prescreen.filter_mode,
			    slk_format) == ERR) {
	    _nc_set_screen(current);
	    result = 0;
	} else {
	    assert(SP != 0);
	    /*
	     * In setupterm() we did a set_curterm(), but it was before we set
	     * SP.  So the "current" screen's terminal pointer was overwritten
	     * with a different terminal.  Later, in _nc_setupscreen(), we set
	     * SP 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;

	    /* if the terminal type has real soft labels, set those up */
	    if (slk_format && num_labels > 0 && SLK_STDFMT(slk_format))
		_nc_slk_initialize(stdscr, COLS);

	    SP->_ifd = fileno(ifp);
	    typeahead(fileno(ifp));
#ifdef TERMIOS
	    SP->_use_meta = ((cur_term->Ottyb.c_cflag & CSIZE) == CS8 &&
			     !(cur_term->Ottyb.c_iflag & ISTRIP));
#else
	    SP->_use_meta = FALSE;
#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;

	    /*
	     * 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->_use_rmso = SGR0_TEST(exit_standout_mode);
	    SP->_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();

	    /* Initialize the terminal line settings. */
	    _nc_initscr();

	    _nc_signal_handler(TRUE);

	    result = SP;
	}
    }
    _nc_unlock_global(curses);
    returnSP(result);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: lib_newterm.c,v 1.13 2010/01/12 23:22:06 nicm Exp $ */
2
3			/****************************************************************************
4			* Copyright (c) 1998-2007,2008 Free Software Foundation, Inc. *
5			* *
6			* Permission is hereby granted, free of charge, to any person obtaining a *
7			* copy of this software and associated documentation files (the *
8			* "Software"), to deal in the Software without restriction, including *
9			* without limitation the rights to use, copy, modify, merge, publish, *
10			* distribute, distribute with modifications, sublicense, and/or sell *
11			* copies of the Software, and to permit persons to whom the Software is *
12			* furnished to do so, subject to the following conditions: *
13			* *
14			* The above copyright notice and this permission notice shall be included *
15			* in all copies or substantial portions of the Software. *
16			* *
17			* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
18			* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
19			* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
20			* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
21			* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
22			* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
23			* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
24			* *
25			* Except as contained in this notice, the name(s) of the above copyright *
26			* holders shall not be used in advertising or otherwise to promote the *
27			* sale, use or other dealings in this Software without prior written *
28			* authorization. *
29			****************************************************************************/
30
31			/****************************************************************************
32			* Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
33			* and: Eric S. Raymond <esr@snark.thyrsus.com> *
34			* and: Thomas E. Dickey 1996-on *
35			****************************************************************************/
36
37			/*
38			** lib_newterm.c
39			**
40			** The newterm() function.
41			**
42			*/
43
44			#include <curses.priv.h>
45
46			#if SVR4_TERMIO && !defined(_POSIX_SOURCE)
47			#define _POSIX_SOURCE
48			#endif
49
50			#include <term.h> /* clear_screen, cup & friends, cur_term */
51			#include <tic.h>
52
53			MODULE_ID("$Id: lib_newterm.c,v 1.13 2010/01/12 23:22:06 nicm Exp $")
54
55			#ifndef ONLCR /* Allows compilation under the QNX 4.2 OS */
56			#define ONLCR 0
57			#endif
58
59			/*
60			* SVr4/XSI Curses specify that hardware echo is turned off in initscr, and not
61			* restored during the curses session. The library simulates echo in software.
62			* (The behavior is unspecified if the application enables hardware echo).
63			*
64			* The newterm function also initializes terminal settings, and since initscr
65			* is supposed to behave as if it calls newterm, we do it here.
66			*/
67			static NCURSES_INLINE int
68			_nc_initscr(void)
69			{
70			int result = ERR;
71
72			/* for extended XPG4 conformance requires cbreak() at this point */
73			/* (SVr4 curses does this anyway) */
74			if (cbreak() == OK) {
75			TTY buf;
76
77			buf = cur_term->Nttyb;
78			#ifdef TERMIOS
79			buf.c_lflag &= ~(ECHO \| ECHONL);
80			buf.c_iflag &= ~(ICRNL \| INLCR \| IGNCR);
81			buf.c_oflag &= ~(ONLCR);
82			#elif HAVE_SGTTY_H
83			buf.sg_flags &= ~(ECHO \| CRMOD);
84			#else
85			memset(&buf, 0, sizeof(buf));
86			#endif
87			if ((result = _nc_set_tty_mode(&buf)) == OK)
88			cur_term->Nttyb = buf;
89			}
90			return result;
91			}
92
93			/*
94			* filter() has to be called before either initscr() or newterm(), so there is
95			* apparently no way to make this flag apply to some terminals and not others,
96			* aside from possibly delaying a filter() call until some terminals have been
97			* initialized.
98			*/
99			NCURSES_EXPORT(void)
100			filter(void)
101			{
102			START_TRACE();
103			T((T_CALLED("filter")));
104			_nc_prescreen.filter_mode = TRUE;
105			returnVoid;
106			}
107
108			#if NCURSES_EXT_FUNCS
109			/*
110			* An extension, allowing the application to open a new screen without
111			* requiring it to also be filtered.
112			*/
113			NCURSES_EXPORT(void)
114			nofilter(void)
115			{
116			START_TRACE();
117			T((T_CALLED("nofilter")));
118			_nc_prescreen.filter_mode = FALSE;
119			returnVoid;
120			}
121			#endif
122
123			NCURSES_EXPORT(SCREEN *)
124			newterm(NCURSES_CONST char name, FILE ofp, FILE *ifp)
125			{
126			int value;
127			int errret;
128			SCREEN *current;
129			SCREEN *result = 0;
130			TERMINAL *its_term;
131
132			START_TRACE();
133			T((T_CALLED("newterm(\"%s\",%p,%p)"), name, ofp, ifp));
134
135			_nc_init_pthreads();
136			_nc_lock_global(curses);
137
138			current = SP;
139			its_term = (SP ? SP->_term : 0);
140
141			/* this loads the capability entry, then sets LINES and COLS */
142			if (setupterm(name, fileno(ofp), &errret) != ERR) {
143			int slk_format = _nc_globals.slk_format;
144
145			/*
146			* This actually allocates the screen structure, and saves the original
147			* terminal settings.
148			*/
149			_nc_set_screen(0);
150
151			/* allow user to set maximum escape delay from the environment */
152			if ((value = _nc_getenv_num("ESCDELAY")) >= 0) {
153			set_escdelay(value);
154			}
155
156			if (_nc_setupscreen(LINES,
157			COLS,
158			ofp,
159			_nc_prescreen.filter_mode,
160			slk_format) == ERR) {
161			_nc_set_screen(current);
162			result = 0;
163			} else {
164			assert(SP != 0);
165			/*
166			* In setupterm() we did a set_curterm(), but it was before we set
167			* SP. So the "current" screen's terminal pointer was overwritten
168			* with a different terminal. Later, in _nc_setupscreen(), we set
169			* SP and the terminal pointer in the new screen.
170			*
171			* Restore the terminal-pointer for the pre-existing screen, if
172			* any.
173			*/
174			if (current)
175			current->_term = its_term;
176
177			/* if the terminal type has real soft labels, set those up */
178			if (slk_format && num_labels > 0 && SLK_STDFMT(slk_format))
179			_nc_slk_initialize(stdscr, COLS);
180
181			SP->_ifd = fileno(ifp);
182			typeahead(fileno(ifp));
183			#ifdef TERMIOS
184			SP->_use_meta = ((cur_term->Ottyb.c_cflag & CSIZE) == CS8 &&
185			!(cur_term->Ottyb.c_iflag & ISTRIP));
186			#else
187			SP->_use_meta = FALSE;
188			#endif
189			SP->_endwin = FALSE;
190
191			/*
192			* Check whether we can optimize scrolling under dumb terminals in
193			* case we do not have any of these capabilities, scrolling
194			* optimization will be useless.
195			*/
196			SP->_scrolling = ((scroll_forward && scroll_reverse) \|\|
197			((parm_rindex \|\|
198			parm_insert_line \|\|
199			insert_line) &&
200			(parm_index \|\|
201			parm_delete_line \|\|
202			delete_line)));
203
204			baudrate(); /* sets a field in the SP structure */
205
206			SP->_keytry = 0;
207
208			/*
209			* Check for mismatched graphic-rendition capabilities. Most SVr4
210			* terminfo trees contain entries that have rmul or rmso equated to
211			* sgr0 (Solaris curses copes with those entries). We do this only
212			* for curses, since many termcap applications assume that
213			* smso/rmso and smul/rmul are paired, and will not function
214			* properly if we remove rmso or rmul. Curses applications
215			* shouldn't be looking at this detail.
216			*/
217			#define SGR0_TEST(mode) (mode != 0) && (exit_attribute_mode == 0 \|\| strcmp(mode, exit_attribute_mode))
218			SP->_use_rmso = SGR0_TEST(exit_standout_mode);
219			SP->_use_rmul = SGR0_TEST(exit_underline_mode);
220
221			/* compute movement costs so we can do better move optimization */
222			_nc_mvcur_init();
223
224			/* initialize terminal to a sane state */
225			_nc_screen_init();
226
227			/* Initialize the terminal line settings. */
228			_nc_initscr();
229
230			_nc_signal_handler(TRUE);
231
232			result = SP;
233			}
234			}
235			_nc_unlock_global(curses);
236			returnSP(result);
237			}