1 /****************************************************************************
2  * Copyright 2020 Thomas E. Dickey                                          *
3  * Copyright 2003-2011,2016 Free Software Foundation, Inc.                  *
4  *                                                                          *
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6  * copy of this software and associated documentation files (the            *
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10  * copies of the Software, and to permit persons to whom the Software is    *
11  * furnished to do so, subject to the following conditions:                 *
12  *                                                                          *
13  * The above copyright notice and this permission notice shall be included  *
14  * in all copies or substantial portions of the Software.                   *
15  *                                                                          *
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23  *                                                                          *
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29 
30 /****************************************************************************
31  *  Author: Thomas E. Dickey                                                *
32  ****************************************************************************/
33 
34 /*
35  *	lib_slk_wset.c
36  *      Set soft label text.
37  */
38 #include <curses.priv.h>
39 
40 #if HAVE_WCTYPE_H
41 #include <wctype.h>
42 #endif
43 
44 MODULE_ID("$Id: lib_slk_wset.c,v 1.15 2020/02/02 23:34:34 tom Exp $")
45 
46 NCURSES_EXPORT(int)
47 slk_wset(int i, const wchar_t *astr, int format)
48 {
49     int result = ERR;
50     const wchar_t *str;
51     mbstate_t state;
52 
53     T((T_CALLED("slk_wset(%d, %s, %d)"), i, _nc_viswbuf(astr), format));
54 
55     if (astr != 0) {
56 	size_t arglen;
57 
58 	init_mb(state);
59 	str = astr;
60 
61 	if ((arglen = wcsrtombs(NULL, &str, (size_t) 0, &state)) != (size_t) -1) {
62 	    char *mystr;
63 
64 	    if ((mystr = (char *) _nc_doalloc(0, arglen + 1)) != 0) {
65 		str = astr;
66 		if (wcsrtombs(mystr, &str, arglen, &state) != (size_t) -1) {
67 		    /* glibc documentation claims that the terminating L'\0'
68 		     * is written, but it is not...
69 		     */
70 		    mystr[arglen] = 0;
71 		    result = slk_set(i, mystr, format);
72 		}
73 		free(mystr);
74 	    }
75 	}
76     }
77     returnCode(result);
78 }
79