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/****************************************************************************
* Copyright (c) 2001-2009,2010 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 1.20 2010/12/25 23:46:26 tom Exp $")
/*
* The SuSv2 description leaves some room for interpretation. We'll assume wch
* points to a string which is L'\0' terminated, contains at least 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)
{
unsigned i;
unsigned len;
int code = OK;
TR(TRACE_CCALLS, (T_CALLED("setcchar(%p,%s,%lu,%d,%p)"),
(void *) wcval, _nc_viswbuf(wch),
(unsigned long) attrs, color_pair, opts));
len = (unsigned) wcslen(wch);
if (opts != NULL
|| (len > 1 && wcwidth(wch[0]) < 0)) {
code = ERR;
} else {
if (len > CCHARW_MAX)
len = CCHARW_MAX;
/*
* If we have a following spacing-character, stop at that point. We
* are only interested in adding non-spacing characters.
*/
for (i = 1; i < len; ++i) {
if (wcwidth(wch[i]) != 0) {
len = i;
break;
}
}
memset(wcval, 0, sizeof(*wcval));
if (len != 0) {
SetAttr(*wcval, attrs | (attr_t) ColorPair(color_pair));
SetPair(CHDEREF(wcval), 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)"),
(const void *) wcval,
(void *) wch,
(void *) attrs,
(void *) color_pair,
opts));
if (opts == NULL) {
len = ((wp = wmemchr(wcval->chars, L'\0', CCHARW_MAX))
? (int) (wp - wcval->chars)
: CCHARW_MAX);
if (wch == NULL) {
/*
* If the value is a null, set the length to 1.
* If the value is not a null, return the length plus 1 for null.
*/
code = (len < CCHARW_MAX) ? (len + 1) : CCHARW_MAX;
} else if (attrs == 0 || color_pair == 0) {
code = ERR;
} else if (len >= 0) {
*attrs = AttrOf(*wcval) & A_ATTRIBUTES;
*color_pair = (short) GetPair(*wcval);
wmemcpy(wch, wcval->chars, (unsigned) len);
wch[len] = L'\0';
code = OK;
}
}
TR(TRACE_CCALLS, (T_RETURN("%d"), code));
return (code);
}
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