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/* $OpenBSD: lib_cchar.c,v 1.1 2010/09/06 17:26:17 nicm Exp $ */ |
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/**************************************************************************** |
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* Copyright (c) 2001-2005,2007 Free Software Foundation, Inc. * |
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* * |
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* Permission is hereby granted, free of charge, to any person obtaining a * |
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* copy of this software and associated documentation files (the * |
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* "Software"), to deal in the Software without restriction, including * |
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* without limitation the rights to use, copy, modify, merge, publish, * |
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* distribute, distribute with modifications, sublicense, and/or sell * |
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* copies of the Software, and to permit persons to whom the Software is * |
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* furnished to do so, subject to the following conditions: * |
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* * |
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* The above copyright notice and this permission notice shall be included * |
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* in all copies or substantial portions of the Software. * |
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* * |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * |
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * |
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * |
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* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * |
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * |
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * |
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* THE USE OR OTHER DEALINGS IN THE SOFTWARE. * |
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* * |
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* Except as contained in this notice, the name(s) of the above copyright * |
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* holders shall not be used in advertising or otherwise to promote the * |
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* sale, use or other dealings in this Software without prior written * |
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* authorization. * |
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****************************************************************************/ |
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/* |
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** lib_cchar.c |
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** |
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** The routines setcchar() and getcchar(). |
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** |
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*/ |
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#include <curses.priv.h> |
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MODULE_ID("$Id: lib_cchar.c,v 1.1 2010/09/06 17:26:17 nicm Exp $") |
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/* |
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* The SuSv2 description leaves some room for interpretation. We'll assume wch |
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* points to a string which is L'\0' terminated, contains at least one |
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* character with strictly positive width, which must be the first, and |
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* contains no characters of negative width. |
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*/ |
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NCURSES_EXPORT(int) |
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setcchar(cchar_t *wcval, |
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const wchar_t *wch, |
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const attr_t attrs, |
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short color_pair, |
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const void *opts) |
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{ |
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int i; |
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int len; |
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int code = OK; |
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TR(TRACE_CCALLS, (T_CALLED("setcchar(%p,%s,%lu,%d,%p)"), |
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wcval, _nc_viswbuf(wch), |
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(unsigned long) attrs, color_pair, opts)); |
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len = wcslen(wch); |
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if (opts != NULL |
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|| (len > 1 && wcwidth(wch[0]) < 0)) { |
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code = ERR; |
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} else { |
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if (len > CCHARW_MAX) |
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len = CCHARW_MAX; |
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/* |
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* If we have a following spacing-character, stop at that point. We |
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* are only interested in adding non-spacing characters. |
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*/ |
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for (i = 1; i < len; ++i) { |
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if (wcwidth(wch[i]) != 0) { |
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len = i; |
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break; |
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} |
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} |
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memset(wcval, 0, sizeof(*wcval)); |
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if (len != 0) { |
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SetAttr(*wcval, attrs | COLOR_PAIR(color_pair)); |
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SetPair(CHDEREF(wcval), color_pair); |
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memcpy(&wcval->chars, wch, len * sizeof(wchar_t)); |
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TR(TRACE_CCALLS, ("copy %d wchars, first is %s", len, |
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_tracecchar_t(wcval))); |
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} |
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} |
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TR(TRACE_CCALLS, (T_RETURN("%d"), code)); |
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return (code); |
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} |
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NCURSES_EXPORT(int) |
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getcchar(const cchar_t *wcval, |
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wchar_t *wch, |
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attr_t *attrs, |
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short *color_pair, |
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void *opts) |
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{ |
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wchar_t *wp; |
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int len; |
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int code = ERR; |
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TR(TRACE_CCALLS, (T_CALLED("getcchar(%p,%p,%p,%p,%p)"), |
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wcval, wch, attrs, color_pair, opts)); |
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if (opts == NULL) { |
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len = (wp = wmemchr(wcval->chars, L'\0', CCHARW_MAX)) |
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? wp - wcval->chars |
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: CCHARW_MAX; |
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if (wch == NULL) { |
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code = len; |
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} else if (attrs == 0 || color_pair == 0) { |
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code = ERR; |
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} else if (len >= 0) { |
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*attrs = AttrOf(*wcval) & A_ATTRIBUTES; |
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*color_pair = GetPair(*wcval); |
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wmemcpy(wch, wcval->chars, (unsigned) len); |
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wch[len] = L'\0'; |
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code = OK; |
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} |
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} |
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TR(TRACE_CCALLS, (T_RETURN("%d"), code)); |
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return (code); |
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} |