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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libcurses/widechar/lib_get_wch.c	Lines:	0	24	0.0 %
Date:	2017-11-07	Branches:	0	14	0.0 %


/* $OpenBSD: lib_get_wch.c,v 1.1 2010/09/06 17:26:17 nicm Exp $ */

/****************************************************************************
 * Copyright (c) 2002-2007,2008 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: Thomas E. Dickey 2002-on                                        *
 ****************************************************************************/

/*
**	lib_get_wch.c
**
**	The routine get_wch().
**
*/

#include <curses.priv.h>
#include <ctype.h>

MODULE_ID("$Id: lib_get_wch.c,v 1.1 2010/09/06 17:26:17 nicm Exp $")

#if HAVE_MBTOWC && HAVE_MBLEN
#define reset_mbytes(state) mblen(NULL, 0), mbtowc(NULL, NULL, 0)
#define count_mbytes(buffer,length,state) mblen(buffer,length)
#define check_mbytes(wch,buffer,length,state) \
	(int) mbtowc(&wch, buffer, length)
#define state_unused
#elif HAVE_MBRTOWC && HAVE_MBRLEN
#define reset_mbytes(state) init_mb(state)
#define count_mbytes(buffer,length,state) mbrlen(buffer,length,&state)
#define check_mbytes(wch,buffer,length,state) \
	(int) mbrtowc(&wch, buffer, length, &state)
#else
make an error
#endif

NCURSES_EXPORT(int)
wget_wch(WINDOW *win, wint_t *result)
{
    SCREEN *sp;
    int code;
    char buffer[(MB_LEN_MAX * 9) + 1];	/* allow some redundant shifts */
    int status;
    size_t count = 0;
    unsigned long value;
    wchar_t wch;
#ifndef state_unused
    mbstate_t state;
#endif

    T((T_CALLED("wget_wch(%p)"), win));

    /*
     * We can get a stream of single-byte characters and KEY_xxx codes from
     * _nc_wgetch(), while we want to return a wide character or KEY_xxx code.
     */
    _nc_lock_global(curses);
    sp = _nc_screen_of(win);
    if (sp != 0) {
	for (;;) {
	    T(("reading %d of %d", (int) count + 1, (int) sizeof(buffer)));
	    code = _nc_wgetch(win, &value, TRUE EVENTLIST_2nd((_nc_eventlist
							       *) 0));
	    if (code == ERR) {
		break;
	    } else if (code == KEY_CODE_YES) {
		/*
		 * If we were processing an incomplete multibyte character,
		 * return an error since we have a KEY_xxx code which
		 * interrupts it.  For some cases, we could improve this by
		 * writing a new version of lib_getch.c(!), but it is not clear
		 * whether the improvement would be worth the effort.
		 */
		if (count != 0) {
		    _nc_ungetch(sp, (int) value);
		    code = ERR;
		}
		break;
	    } else if (count + 1 >= sizeof(buffer)) {
		_nc_ungetch(sp, (int) value);
		code = ERR;
		break;
	    } else {
		buffer[count++] = (char) UChar(value);
		reset_mbytes(state);
		status = count_mbytes(buffer, count, state);
		if (status >= 0) {
		    reset_mbytes(state);
		    if (check_mbytes(wch, buffer, count, state) != status) {
			code = ERR;	/* the two calls should match */
			_nc_ungetch(sp, (int) value);
		    }
		    value = wch;
		    break;
		}
	    }
	}
    } else {
	code = ERR;
    }
    *result = value;
    _nc_unlock_global(curses);
    T(("result %#lo", value));
    returnCode(code);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: lib_get_wch.c,v 1.1 2010/09/06 17:26:17 nicm Exp $ */
2
3			/****************************************************************************
4			* Copyright (c) 2002-2007,2008 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: Thomas E. Dickey 2002-on *
33			****************************************************************************/
34
35			/*
36			** lib_get_wch.c
37			**
38			** The routine get_wch().
39			**
40			*/
41
42			#include <curses.priv.h>
43			#include <ctype.h>
44
45			MODULE_ID("$Id: lib_get_wch.c,v 1.1 2010/09/06 17:26:17 nicm Exp $")
46
47			#if HAVE_MBTOWC && HAVE_MBLEN
48			#define reset_mbytes(state) mblen(NULL, 0), mbtowc(NULL, NULL, 0)
49			#define count_mbytes(buffer,length,state) mblen(buffer,length)
50			#define check_mbytes(wch,buffer,length,state) \
51			(int) mbtowc(&wch, buffer, length)
52			#define state_unused
53			#elif HAVE_MBRTOWC && HAVE_MBRLEN
54			#define reset_mbytes(state) init_mb(state)
55			#define count_mbytes(buffer,length,state) mbrlen(buffer,length,&state)
56			#define check_mbytes(wch,buffer,length,state) \
57			(int) mbrtowc(&wch, buffer, length, &state)
58			#else
59			make an error
60			#endif
61
62			NCURSES_EXPORT(int)
63			wget_wch(WINDOW win, wint_t result)
64			{
65			SCREEN *sp;
66			int code;
67			char buffer[(MB_LEN_MAX * 9) + 1]; /* allow some redundant shifts */
68			int status;
69			size_t count = 0;
70			unsigned long value;
71			wchar_t wch;
72			#ifndef state_unused
73			mbstate_t state;
74			#endif
75
76			T((T_CALLED("wget_wch(%p)"), win));
77
78			/*
79			* We can get a stream of single-byte characters and KEY_xxx codes from
80			* _nc_wgetch(), while we want to return a wide character or KEY_xxx code.
81			*/
82			_nc_lock_global(curses);
83			sp = _nc_screen_of(win);
84			if (sp != 0) {
85			for (;;) {
86			T(("reading %d of %d", (int) count + 1, (int) sizeof(buffer)));
87			code = _nc_wgetch(win, &value, TRUE EVENTLIST_2nd((_nc_eventlist
88			*) 0));
89			if (code == ERR) {
90			break;
91			} else if (code == KEY_CODE_YES) {
92			/*
93			* If we were processing an incomplete multibyte character,
94			* return an error since we have a KEY_xxx code which
95			* interrupts it. For some cases, we could improve this by
96			* writing a new version of lib_getch.c(!), but it is not clear
97			* whether the improvement would be worth the effort.
98			*/
99			if (count != 0) {
100			_nc_ungetch(sp, (int) value);
101			code = ERR;
102			}
103			break;
104			} else if (count + 1 >= sizeof(buffer)) {
105			_nc_ungetch(sp, (int) value);
106			code = ERR;
107			break;
108			} else {
109			buffer[count++] = (char) UChar(value);
110			reset_mbytes(state);
111			status = count_mbytes(buffer, count, state);
112			if (status >= 0) {
113			reset_mbytes(state);
114			if (check_mbytes(wch, buffer, count, state) != status) {
115			code = ERR; /* the two calls should match */
116			_nc_ungetch(sp, (int) value);
117			}
118			value = wch;
119			break;
120			}
121			}
122			}
123			} else {
124			code = ERR;
125			}
126			*result = value;
127			_nc_unlock_global(curses);
128			T(("result %#lo", value));
129			returnCode(code);
130			}