diff options
Diffstat (limited to 'ncurses-5.3/ncurses/widechar/lib_cchar.c')
| -rw-r--r-- | ncurses-5.3/ncurses/widechar/lib_cchar.c | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/ncurses-5.3/ncurses/widechar/lib_cchar.c b/ncurses-5.3/ncurses/widechar/lib_cchar.c new file mode 100644 index 0000000..76f3f9a --- /dev/null +++ b/ncurses-5.3/ncurses/widechar/lib_cchar.c @@ -0,0 +1,114 @@ +/**************************************************************************** + * 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("$Id$") + +/* + * 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); +} |