139f2269fSPeter Wemm /****************************************************************************
25ca44d1cSRong-En Fan * Copyright 2019-2020,2021 Thomas E. Dickey *
339f2269fSPeter Wemm * Copyright 2001-2016,2017 Free Software Foundation, Inc. *
439f2269fSPeter Wemm * *
539f2269fSPeter Wemm * Permission is hereby granted, free of charge, to any person obtaining a *
639f2269fSPeter Wemm * copy of this software and associated documentation files (the *
739f2269fSPeter Wemm * "Software"), to deal in the Software without restriction, including *
839f2269fSPeter Wemm * without limitation the rights to use, copy, modify, merge, publish, *
939f2269fSPeter Wemm * distribute, distribute with modifications, sublicense, and/or sell *
1039f2269fSPeter Wemm * copies of the Software, and to permit persons to whom the Software is *
1139f2269fSPeter Wemm * furnished to do so, subject to the following conditions: *
1239f2269fSPeter Wemm * *
1339f2269fSPeter Wemm * The above copyright notice and this permission notice shall be included *
1439f2269fSPeter Wemm * in all copies or substantial portions of the Software. *
1539f2269fSPeter Wemm * *
1639f2269fSPeter Wemm * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
1739f2269fSPeter Wemm * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
1839f2269fSPeter Wemm * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
1939f2269fSPeter Wemm * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
2039f2269fSPeter Wemm * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
2139f2269fSPeter Wemm * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
2239f2269fSPeter Wemm * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
2339f2269fSPeter Wemm * *
2439f2269fSPeter Wemm * Except as contained in this notice, the name(s) of the above copyright *
2539f2269fSPeter Wemm * holders shall not be used in advertising or otherwise to promote the *
2639f2269fSPeter Wemm * sale, use or other dealings in this Software without prior written *
2739f2269fSPeter Wemm * authorization. *
2839f2269fSPeter Wemm ****************************************************************************/
2939f2269fSPeter Wemm
3039f2269fSPeter Wemm /*
3139f2269fSPeter Wemm ** lib_cchar.c
3239f2269fSPeter Wemm **
3339f2269fSPeter Wemm ** The routines setcchar() and getcchar().
3439f2269fSPeter Wemm **
3539f2269fSPeter Wemm */
3639f2269fSPeter Wemm
3739f2269fSPeter Wemm #include <curses.priv.h>
385ca44d1cSRong-En Fan #include <wchar.h>
3939f2269fSPeter Wemm
4039f2269fSPeter Wemm MODULE_ID("$Id: lib_cchar.c,v 1.35 2021/01/17 00:04:08 tom Exp $")
4139f2269fSPeter Wemm
424a1a9510SRong-En Fan /*
434a1a9510SRong-En Fan * The SuSv2 description leaves some room for interpretation. We'll assume wch
444a1a9510SRong-En Fan * points to a string which is L'\0' terminated, contains at least one
4539f2269fSPeter Wemm * character with strictly positive width, which must be the first, and
4639f2269fSPeter Wemm * contains no characters of negative width.
474a1a9510SRong-En Fan */
NCURSES_EXPORT(int)484a1a9510SRong-En Fan NCURSES_EXPORT(int)
494a1a9510SRong-En Fan setcchar(cchar_t *wcval,
504a1a9510SRong-En Fan const wchar_t *wch,
514a1a9510SRong-En Fan const attr_t attrs,
5239f2269fSPeter Wemm NCURSES_PAIRS_T pair_arg,
5339f2269fSPeter Wemm const void *opts)
5439f2269fSPeter Wemm {
5539f2269fSPeter Wemm int code = OK;
5639f2269fSPeter Wemm int color_pair = pair_arg;
575ca44d1cSRong-En Fan unsigned len;
585ca44d1cSRong-En Fan
595ca44d1cSRong-En Fan TR(TRACE_CCALLS, (T_CALLED("setcchar(%p,%s,attrs=%lu,pair=%d,%p)"),
6039f2269fSPeter Wemm (void *) wcval, _nc_viswbuf(wch),
614a1a9510SRong-En Fan (unsigned long) attrs, color_pair, opts));
624a1a9510SRong-En Fan
634a1a9510SRong-En Fan set_extended_pair(opts, color_pair);
6439f2269fSPeter Wemm if (wch == NULL
6539f2269fSPeter Wemm || ((len = (unsigned) wcslen(wch)) > 1 && _nc_wacs_width(wch[0]) < 0)
664a1a9510SRong-En Fan || color_pair < 0) {
674a1a9510SRong-En Fan code = ERR;
6839f2269fSPeter Wemm } else {
694a1a9510SRong-En Fan unsigned i;
704a1a9510SRong-En Fan
714a1a9510SRong-En Fan if (len > CCHARW_MAX)
724a1a9510SRong-En Fan len = CCHARW_MAX;
7339f2269fSPeter Wemm
7439f2269fSPeter Wemm /*
754a1a9510SRong-En Fan * If we have a following spacing-character, stop at that point. We
7639f2269fSPeter Wemm * are only interested in adding non-spacing characters.
7739f2269fSPeter Wemm */
7839f2269fSPeter Wemm for (i = 1; i < len; ++i) {
7939f2269fSPeter Wemm if (_nc_wacs_width(wch[i]) != 0) {
8039f2269fSPeter Wemm len = i;
8139f2269fSPeter Wemm break;
8239f2269fSPeter Wemm }
834a1a9510SRong-En Fan }
844a1a9510SRong-En Fan
8539f2269fSPeter Wemm memset(wcval, 0, sizeof(*wcval));
8639f2269fSPeter Wemm
8739f2269fSPeter Wemm if (len != 0) {
8839f2269fSPeter Wemm SetAttr(*wcval, attrs);
8939f2269fSPeter Wemm SetPair(CHDEREF(wcval), color_pair);
9039f2269fSPeter Wemm memcpy(&wcval->chars, wch, len * sizeof(wchar_t));
9139f2269fSPeter Wemm TR(TRACE_CCALLS, ("copy %d wchars, first is %s", len,
9239f2269fSPeter Wemm _tracecchar_t(wcval)));
9339f2269fSPeter Wemm }
9439f2269fSPeter Wemm }
9539f2269fSPeter Wemm
964a1a9510SRong-En Fan TR(TRACE_CCALLS, (T_RETURN("%d"), code));
974a1a9510SRong-En Fan return (code);
984a1a9510SRong-En Fan }
994a1a9510SRong-En Fan
1004a1a9510SRong-En Fan NCURSES_EXPORT(int)
getcchar(const cchar_t * wcval,wchar_t * wch,attr_t * attrs,NCURSES_PAIRS_T * pair_arg,void * opts)10139f2269fSPeter Wemm getcchar(const cchar_t *wcval,
10239f2269fSPeter Wemm wchar_t *wch,
10339f2269fSPeter Wemm attr_t *attrs,
10439f2269fSPeter Wemm NCURSES_PAIRS_T *pair_arg,
10539f2269fSPeter Wemm void *opts)
10639f2269fSPeter Wemm {
10739f2269fSPeter Wemm int code = ERR;
10839f2269fSPeter Wemm int color_pair;
10939f2269fSPeter Wemm
11039f2269fSPeter Wemm TR(TRACE_CCALLS, (T_CALLED("getcchar(%p,%p,%p,%p,%p)"),
11139f2269fSPeter Wemm (const void *) wcval,
11239f2269fSPeter Wemm (void *) wch,
11339f2269fSPeter Wemm (void *) attrs,
11439f2269fSPeter Wemm (void *) pair_arg,
11539f2269fSPeter Wemm opts));
1164a1a9510SRong-En Fan
1174a1a9510SRong-En Fan #if !NCURSES_EXT_COLORS
11839f2269fSPeter Wemm if (opts != NULL) {
11939f2269fSPeter Wemm ; /* empty */
1204a1a9510SRong-En Fan } else
12139f2269fSPeter Wemm #endif
12239f2269fSPeter Wemm if (wcval != NULL) {
12339f2269fSPeter Wemm wchar_t *wp;
12439f2269fSPeter Wemm int len;
12539f2269fSPeter Wemm
12639f2269fSPeter Wemm len = ((wp = wmemchr(wcval->chars, L'\0', (size_t) CCHARW_MAX))
12739f2269fSPeter Wemm ? (int) (wp - wcval->chars)
12839f2269fSPeter Wemm : CCHARW_MAX);
12939f2269fSPeter Wemm
130 if (wch == NULL) {
131 /*
132 * If the value is a null, set the length to 1.
133 * If the value is not a null, return the length plus 1 for null.
134 */
135 code = (len < CCHARW_MAX) ? (len + 1) : CCHARW_MAX;
136 } else if (attrs == 0 || pair_arg == 0) {
137 code = ERR;
138 } else if (len >= 0) {
139 TR(TRACE_CCALLS, ("copy %d wchars, first is %s", len,
140 _tracecchar_t(wcval)));
141 *attrs = AttrOf(*wcval) & A_ATTRIBUTES;
142 color_pair = GetPair(*wcval);
143 get_extended_pair(opts, color_pair);
144 *pair_arg = limit_PAIRS(color_pair);
145 wmemcpy(wch, wcval->chars, (size_t) len);
146 wch[len] = L'\0';
147 if (*pair_arg >= 0)
148 code = OK;
149 }
150 }
151
152 TR(TRACE_CCALLS, (T_RETURN("%d"), code));
153 return (code);
154 }
155