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- /****************************************************************************
- * Copyright (c) 2001,2002 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. *
- ****************************************************************************/
-
- /*
- ** lib_cchar.c
- **
- ** The routines setcchar() and getcchar().
- **
- */
-
- #include <curses.priv.h>
-
- MODULE_ID("$Id: lib_cchar.c,v 1.6 2002/08/10 22:27:37 tom Exp $")
-
- /*
- * The SuSv2 description leaves some room for interpretation. We'll assume wch
- * is L'\0' terminated, contains at most one character with strictly positive
- * width, which must be the first, and contains no characters of negative
- * width.
- */
- NCURSES_EXPORT(int)
- setcchar(cchar_t * wcval, const wchar_t * wch, const attr_t attrs,
- short color_pair, const void *opts)
- {
- int i;
- int len;
- int code = OK;
-
- TR(TRACE_CCALLS, (T_CALLED("setcchar(%p,%s,%ld,%d,%p)"),
- wcval, _nc_viswbuf(wch), attrs, color_pair, opts));
-
- if (opts != NULL || (len = wcslen(wch)) > CCHARW_MAX
- || (len > 0 && wcwidth(wch[0]) < 0)) {
- code = ERR;
- } else {
-
- for (i = 1; i < len; ++i) {
- if (wcwidth(wch[i]) != 0) {
- code = ERR;
- break;
- }
- }
-
- if (code != ERR) {
- memset(wcval, 0, sizeof(*wcval));
-
- if (len != 0) {
- SetAttr(*wcval, attrs | color_pair);
- memcpy(&wcval->chars, wch, len * sizeof(wchar_t));
- TR(TRACE_CCALLS, ("copy %d wchars, first is %s", len,
- _tracecchar_t(wcval)));
- }
- }
- }
-
- TR(TRACE_CCALLS, (T_RETURN("%d"), code));
- return (code);
- }
-
- NCURSES_EXPORT(int)
- getcchar(const cchar_t * wcval, wchar_t * wch, attr_t * attrs,
- short *color_pair, void *opts)
- {
- wchar_t *wp;
- int len;
- int code = ERR;
-
- TR(TRACE_CCALLS, (T_CALLED("getcchar(%p,%p,%p,%p,%p)"),
- wcval, wch, attrs, color_pair, opts));
-
- if (opts == NULL) {
- len = (wp = wmemchr(wcval->chars, L'\0', CCHARW_MAX))
- ? wp - wcval->chars
- : CCHARW_MAX;
-
- if (wch == NULL) {
- code = len;
- } else if (len >= 0) {
- *attrs = AttrOf(*wcval);
- *color_pair = AttrOf(*wcval) & A_COLOR;
- wmemcpy(wch, wcval->chars, (unsigned) len);
- wch[len] = L'\0';
- code = OK;
- }
- }
-
- TR(TRACE_CCALLS, (T_RETURN("%d"), code));
- return (code);
- }
-