Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libcurses/tinfo/lib_termcap.c	Lines:	89	113	78.8 %
Date:	2017-11-13	Branches:	82	160	51.3 %


/* $OpenBSD: lib_termcap.c,v 1.10 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                 *
 *                                                                          *
 * some of the code in here was contributed by:                             *
 * Magnus Bengtsson, d6mbeng@dtek.chalmers.se (Nov'93)                      *
 * (but it has changed a lot)                                               *
 ****************************************************************************/

#define __INTERNAL_CAPS_VISIBLE
#include <curses.priv.h>

#include <termcap.h>
#include <tic.h>
#include <ctype.h>

#include <term_entry.h>

MODULE_ID("$Id: lib_termcap.c,v 1.10 2010/01/12 23:22:06 nicm Exp $")

NCURSES_EXPORT_VAR(char *) UP = 0;
NCURSES_EXPORT_VAR(char *) BC = 0;

#define MyCache  _nc_globals.tgetent_cache
#define CacheInx _nc_globals.tgetent_index
#define CacheSeq _nc_globals.tgetent_sequence

#define FIX_SGR0 MyCache[CacheInx].fix_sgr0
#define LAST_TRM MyCache[CacheInx].last_term
#define LAST_BUF MyCache[CacheInx].last_bufp
#define LAST_USE MyCache[CacheInx].last_used
#define LAST_SEQ MyCache[CacheInx].sequence

/***************************************************************************
 *
 * tgetent(bufp, term)
 *
 * In termcap, this function reads in the entry for terminal `term' into the
 * buffer pointed to by bufp. It must be called before any of the functions
 * below are called.
 * In this terminfo emulation, tgetent() simply calls setupterm() (which
 * does a bit more than tgetent() in termcap does), and returns its return
 * value (1 if successful, 0 if no terminal with the given name could be
 * found, or -1 if no terminal descriptions have been installed on the
 * system).  The bufp argument is ignored.
 *
 ***************************************************************************/

NCURSES_EXPORT(int)
tgetent(char *bufp, const char *name)
{
    int errcode;
    int n;
    bool found_cache = FALSE;

    START_TRACE();
    T((T_CALLED("tgetent()")));

    _nc_setupterm((NCURSES_CONST char *) name, STDOUT_FILENO, &errcode, TRUE);

    /*
     * In general we cannot tell if the fixed sgr0 is still used by the
     * caller, but if tgetent() is called with the same buffer, that is
     * good enough, since the previous data would be invalidated by the
     * current call.
     *
     * bufp may be a null pointer, e.g., GNU termcap.  That allocates data,
     * which is good until the next tgetent() call.  The conventional termcap
     * is inconvenient because of the fixed buffer size, but because it uses
     * caller-supplied buffers, can have multiple terminal descriptions in
     * use at a given time.
     */
    for (n = 0; n < TGETENT_MAX; ++n) {
	bool same_result = (MyCache[n].last_used && MyCache[n].last_bufp == bufp);
	if (same_result) {
	    CacheInx = n;
	    if (FIX_SGR0 != 0) {
		FreeAndNull(FIX_SGR0);
	    }
	    /*
	     * Also free the terminfo data that we loaded (much bigger leak).
	     */
	    if (LAST_TRM != 0 && LAST_TRM != cur_term) {
		TERMINAL *trm = LAST_TRM;
		del_curterm(LAST_TRM);
		for (CacheInx = 0; CacheInx < TGETENT_MAX; ++CacheInx)
		    if (LAST_TRM == trm)
			LAST_TRM = 0;
		CacheInx = n;
	    }
	    found_cache = TRUE;
	    break;
	}
    }
    if (!found_cache) {
	int best = 0;

	for (CacheInx = 0; CacheInx < TGETENT_MAX; ++CacheInx) {
	    if (LAST_SEQ < MyCache[best].sequence) {
		best = CacheInx;
	    }
	}
	CacheInx = best;
    }
    LAST_TRM = cur_term;
    LAST_SEQ = ++CacheSeq;

    PC = 0;
    UP = 0;
    BC = 0;
    FIX_SGR0 = 0;		/* don't free it - application may still use */

    if (errcode == 1) {

	if (cursor_left)
	    if ((backspaces_with_bs = (char) !strcmp(cursor_left, "\b")) == 0)
		backspace_if_not_bs = cursor_left;

	/* we're required to export these */
	if (pad_char != NULL)
	    PC = pad_char[0];
	if (cursor_up != NULL)
	    UP = cursor_up;
	if (backspace_if_not_bs != NULL)
	    BC = backspace_if_not_bs;

	if ((FIX_SGR0 = _nc_trim_sgr0(&(cur_term->type))) != 0) {
	    if (!strcmp(FIX_SGR0, exit_attribute_mode)) {
		if (FIX_SGR0 != exit_attribute_mode) {
		    free(FIX_SGR0);
		}
		FIX_SGR0 = 0;
	    }
	}
	LAST_BUF = bufp;
	LAST_USE = TRUE;

	SetNoPadding(SP);
	(void) baudrate();	/* sets ospeed as a side-effect */

/* LINT_PREPRO
#if 0*/
#include <capdefaults.c>
/* LINT_PREPRO
#endif*/

    }
    returnCode(errcode);
}

/***************************************************************************
 *
 * tgetflag(str)
 *
 * Look up boolean termcap capability str and return its value (TRUE=1 if
 * present, FALSE=0 if not).
 *
 ***************************************************************************/

NCURSES_EXPORT(int)
tgetflag(NCURSES_CONST char *id)
{
    unsigned i;

    T((T_CALLED("tgetflag(%s)"), id));
    if (cur_term != 0) {
	TERMTYPE *tp = &(cur_term->type);
	for_each_boolean(i, tp) {
	    const char *capname = ExtBoolname(tp, i, boolcodes);
	    if (!strncmp(id, capname, 2)) {
		/* setupterm forces invalid booleans to false */
		returnCode(tp->Booleans[i]);
	    }
	}
    }
    returnCode(0);		/* Solaris does this */
}

/***************************************************************************
 *
 * tgetnum(str)
 *
 * Look up numeric termcap capability str and return its value, or -1 if
 * not given.
 *
 ***************************************************************************/

NCURSES_EXPORT(int)
tgetnum(NCURSES_CONST char *id)
{
    unsigned i;

    T((T_CALLED("tgetnum(%s)"), id));
    if (cur_term != 0) {
	TERMTYPE *tp = &(cur_term->type);
	for_each_number(i, tp) {
	    const char *capname = ExtNumname(tp, i, numcodes);
	    if (!strncmp(id, capname, 2)) {
		if (!VALID_NUMERIC(tp->Numbers[i]))
		    returnCode(ABSENT_NUMERIC);
		returnCode(tp->Numbers[i]);
	    }
	}
    }
    returnCode(ABSENT_NUMERIC);
}

/***************************************************************************
 *
 * tgetstr(str, area)
 *
 * Look up string termcap capability str and return a pointer to its value,
 * or NULL if not given.
 *
 ***************************************************************************/

NCURSES_EXPORT(char *)
tgetstr(NCURSES_CONST char *id, char **area)
{
    unsigned i;
    char *result = NULL, *base;

    if (area != 0 && *area != 0)
        base = *area;
    T((T_CALLED("tgetstr(%s,%p)"), id, area));
    if (cur_term != 0) {
	TERMTYPE *tp = &(cur_term->type);
	for_each_string(i, tp) {
	    const char *capname = ExtStrname(tp, i, strcodes);
	    if (!strncmp(id, capname, 2)) {
		result = tp->Strings[i];
		TR(TRACE_DATABASE, ("found match : %s", _nc_visbuf(result)));
		/* setupterm forces canceled strings to null */
		if (VALID_STRING(result)) {
		    if (result == exit_attribute_mode
			&& FIX_SGR0 != 0) {
			result = FIX_SGR0;
			TR(TRACE_DATABASE, ("altered to : %s", _nc_visbuf(result)));
		    }
		    if (area != 0 && *area != 0) {
			(void) strlcpy(*area, result, 1024 - (*area - base));
			result = *area;
			*area += strlen(*area) + 1;
		    }
		}
		break;
	    }
	}
    }
    returnPtr(result);
}

#if NO_LEAKS
NCURSES_EXPORT(void)
_nc_tgetent_leaks(void)
{
    for (CacheInx = 0; CacheInx < TGETENT_MAX; ++CacheInx) {
	FreeIfNeeded(FIX_SGR0);
	if (LAST_TRM != 0)
	    del_curterm(LAST_TRM);
    }
}
#endif


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: lib_termcap.c,v 1.10 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			* some of the code in here was contributed by: *
37			* Magnus Bengtsson, d6mbeng@dtek.chalmers.se (Nov'93) *
38			* (but it has changed a lot) *
39			****************************************************************************/
40
41			#define __INTERNAL_CAPS_VISIBLE
42			#include <curses.priv.h>
43
44			#include <termcap.h>
45			#include <tic.h>
46			#include <ctype.h>
47
48			#include <term_entry.h>
49
50			MODULE_ID("$Id: lib_termcap.c,v 1.10 2010/01/12 23:22:06 nicm Exp $")
51
52			NCURSES_EXPORT_VAR(char *) UP = 0;
53			NCURSES_EXPORT_VAR(char *) BC = 0;
54
55			#define MyCache _nc_globals.tgetent_cache
56	✓✗✗✓	9	#define CacheInx _nc_globals.tgetent_index
57	✓✗✗✓	9	#define CacheSeq _nc_globals.tgetent_sequence
58
59	✓✗✓✗ ✗✓✗✓	12	#define FIX_SGR0 MyCache[CacheInx].fix_sgr0
60			#define LAST_TRM MyCache[CacheInx].last_term
61			#define LAST_BUF MyCache[CacheInx].last_bufp
62			#define LAST_USE MyCache[CacheInx].last_used
63	✓✗✓✗ ✓✗✗✓	12	#define LAST_SEQ MyCache[CacheInx].sequence
64
65			/***************************************************************************
66			*
67	✓✗✓✗	9	* tgetent(bufp, term)
68	✓✗✓✗	9	*
69	✓✗✓✗	9	* In termcap, this function reads in the entry for terminal `term' into the
70	✓✗✓✗	9	* buffer pointed to by bufp. It must be called before any of the functions
71		3	* below are called.
72		3	* In this terminfo emulation, tgetent() simply calls setupterm() (which
73		3	* does a bit more than tgetent() in termcap does), and returns its return
74	✗✗	3	* value (1 if successful, 0 if no terminal with the given name could be
75	✓✗	6	* found, or -1 if no terminal descriptions have been installed on the
76	✗✓✗✗	3	* system). The bufp argument is ignored.
77			*
78			***************************************************************************/
79
80	✓✗	9	NCURSES_EXPORT(int)
81	✓✗	9	tgetent(char bufp, const char name)
82	✓✗✗✓	9	{
83	✓✗✗✓	15	int errcode;
84			int n;
85	✓✗✓✗ ✗✓✗✓	12	bool found_cache = FALSE;
86
87			START_TRACE();
88			T((T_CALLED("tgetent()")));
89
90		3	_nc_setupterm((NCURSES_CONST char *) name, STDOUT_FILENO, &errcode, TRUE);
91
92			/*
93			* In general we cannot tell if the fixed sgr0 is still used by the
94			* caller, but if tgetent() is called with the same buffer, that is
95			* good enough, since the previous data would be invalidated by the
96			* current call.
97			*
98			* bufp may be a null pointer, e.g., GNU termcap. That allocates data,
99			* which is good until the next tgetent() call. The conventional termcap
100			* is inconvenient because of the fixed buffer size, but because it uses
101			* caller-supplied buffers, can have multiple terminal descriptions in
102			* use at a given time.
103			*/
104	✓✓	30	for (n = 0; n < TGETENT_MAX; ++n) {
105	✗✓	24	bool same_result = (MyCache[n].last_used && MyCache[n].last_bufp == bufp);
106	✗✓	12	if (same_result) {
107			CacheInx = n;
108			if (FIX_SGR0 != 0) {
109			FreeAndNull(FIX_SGR0);
110			}
111			/*
112			* Also free the terminfo data that we loaded (much bigger leak).
113			*/
114			if (LAST_TRM != 0 && LAST_TRM != cur_term) {
115			TERMINAL *trm = LAST_TRM;
116			del_curterm(LAST_TRM);
117			for (CacheInx = 0; CacheInx < TGETENT_MAX; ++CacheInx)
118			if (LAST_TRM == trm)
119			LAST_TRM = 0;
120			CacheInx = n;
121			}
122			found_cache = TRUE;
123			break;
124			}
125	✓✗	12	}
126	✓✗	3	if (!found_cache) {
127			int best = 0;
128
129	✓✓	30	for (CacheInx = 0; CacheInx < TGETENT_MAX; ++CacheInx) {
130	✗✓	12	if (LAST_SEQ < MyCache[best].sequence) {
131			best = CacheInx;
132			}
133			}
134		3	CacheInx = best;
135		3	}
136		3	LAST_TRM = cur_term;
137		3	LAST_SEQ = ++CacheSeq;
138
139		3	PC = 0;
140		3	UP = 0;
141		3	BC = 0;
142		3	FIX_SGR0 = 0; /* don't free it - application may still use */
143
144	✓✗	3	if (errcode == 1) {
145
146	✓✗	3	if (cursor_left)
147	✗✓	3	if ((backspaces_with_bs = (char) !strcmp(cursor_left, "\b")) == 0)
148			backspace_if_not_bs = cursor_left;
149
150			/* we're required to export these */
151	✗✓	3	if (pad_char != NULL)
152			PC = pad_char[0];
153	✓✗	3	if (cursor_up != NULL)
154		3	UP = cursor_up;
155	✗✓	3	if (backspace_if_not_bs != NULL)
156			BC = backspace_if_not_bs;
157
158	✓✗	3	if ((FIX_SGR0 = _nc_trim_sgr0(&(cur_term->type))) != 0) {
159	✗✓	3	if (!strcmp(FIX_SGR0, exit_attribute_mode)) {
160			if (FIX_SGR0 != exit_attribute_mode) {
161			free(FIX_SGR0);
162			}
163			FIX_SGR0 = 0;
164			}
165			}
166		3	LAST_BUF = bufp;
167		3	LAST_USE = TRUE;
168
169		3	SetNoPadding(SP);
170		3	(void) baudrate(); /* sets ospeed as a side-effect */
171
172			/* LINT_PREPRO
173			#if 0*/
174			#include <capdefaults.c>
175			/* LINT_PREPRO
176			#endif*/
177
178		3	}
179		6	returnCode(errcode);
180		3	}
181
182			/***************************************************************************
183			*
184			* tgetflag(str)
185			*
186			* Look up boolean termcap capability str and return its value (TRUE=1 if
187			* present, FALSE=0 if not).
188			*
189			***************************************************************************/
190
191			NCURSES_EXPORT(int)
192			tgetflag(NCURSES_CONST char *id)
193			{
194			unsigned i;
195
196			T((T_CALLED("tgetflag(%s)"), id));
197	✓✗	36	if (cur_term != 0) {
198		18	TERMTYPE *tp = &(cur_term->type);
199	✓✗	708	for_each_boolean(i, tp) {
200	✗✓	1062	const char *capname = ExtBoolname(tp, i, boolcodes);
201	✓✓	354	if (!strncmp(id, capname, 2)) {
202			/* setupterm forces invalid booleans to false */
203		18	returnCode(tp->Booleans[i]);
204			}
205	✓✓	336	}
206			}
207			returnCode(0); /* Solaris does this */
208		18	}
209
210			/***************************************************************************
211			*
212			* tgetnum(str)
213			*
214			* Look up numeric termcap capability str and return its value, or -1 if
215			* not given.
216			*
217			***************************************************************************/
218
219			NCURSES_EXPORT(int)
220			tgetnum(NCURSES_CONST char *id)
221			{
222			unsigned i;
223
224			T((T_CALLED("tgetnum(%s)"), id));
225	✓✗	12	if (cur_term != 0) {
226		6	TERMTYPE *tp = &(cur_term->type);
227	✓✗	24	for_each_number(i, tp) {
228	✗✓	36	const char *capname = ExtNumname(tp, i, numcodes);
229	✓✓	12	if (!strncmp(id, capname, 2)) {
230	✗✓	6	if (!VALID_NUMERIC(tp->Numbers[i]))
231			returnCode(ABSENT_NUMERIC);
232		6	returnCode(tp->Numbers[i]);
233			}
234	✓✓	6	}
235			}
236			returnCode(ABSENT_NUMERIC);
237		6	}
238
239			/***************************************************************************
240			*
241			* tgetstr(str, area)
242			*
243			* Look up string termcap capability str and return a pointer to its value,
244			* or NULL if not given.
245			*
246			***************************************************************************/
247
248			NCURSES_EXPORT(char *)
249			tgetstr(NCURSES_CONST char id, char *area)
250			{
251			unsigned i;
252			char result = NULL, base;
253
254	✓✗✓✗	342	if (area != 0 && *area != 0)
255		114	base = *area;
256			T((T_CALLED("tgetstr(%s,%p)"), id, area));
257	✓✗	114	if (cur_term != 0) {
258		114	TERMTYPE *tp = &(cur_term->type);
259	✓✗	12696	for_each_string(i, tp) {
260	✗✓	19044	const char *capname = ExtStrname(tp, i, strcodes);
261	✓✓	6348	if (!strncmp(id, capname, 2)) {
262		114	result = tp->Strings[i];
263			TR(TRACE_DATABASE, ("found match : %s", _nc_visbuf(result)));
264			/* setupterm forces canceled strings to null */
265	✓✓	114	if (VALID_STRING(result)) {
266	✓✗	96	if (result == exit_attribute_mode
267	✓✓	96	&& FIX_SGR0 != 0) {
268			result = FIX_SGR0;
269			TR(TRACE_DATABASE, ("altered to : %s", _nc_visbuf(result)));
270		3	}
271	✓✗✓✗	186	if (area != 0 && *area != 0) {
272		93	(void) strlcpy(area, result, 1024 - (area - base));
273		93	result = *area;
274		93	area += strlen(area) + 1;
275		93	}
276			}
277		114	break;
278			}
279	✓✓	6234	}
280		114	}
281		114	returnPtr(result);
282			}
283
284			#if NO_LEAKS
285			NCURSES_EXPORT(void)
286			_nc_tgetent_leaks(void)
287			{
288			for (CacheInx = 0; CacheInx < TGETENT_MAX; ++CacheInx) {
289			FreeIfNeeded(FIX_SGR0);
290			if (LAST_TRM != 0)
291			del_curterm(LAST_TRM);
292			}
293			}
294			#endif