140 lines
3.8 KiB
C
140 lines
3.8 KiB
C
/* $NetBSD: cchar.c,v 1.12 2020/07/02 23:43:01 uwe Exp $ */
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/*
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* Copyright (c) 2005 The NetBSD Foundation Inc.
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* All rights reserved.
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*
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* This code is derived from code donated to the NetBSD Foundation
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* by Ruibiao Qiu <ruibiao@arl.wustl.edu,ruibiao@gmail.com>.
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*
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND
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* CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__RCSID("$NetBSD: cchar.c,v 1.12 2020/07/02 23:43:01 uwe Exp $");
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#endif /* not lint */
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#include <string.h>
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#include "curses.h"
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#include "curses_private.h"
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/*
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* getcchar --
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* get a wide-character string and rendition from a cchar_t
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*/
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int
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getcchar(const cchar_t *wcval, wchar_t *wch, attr_t *attrs,
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short *color_pair, void *opts)
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{
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wchar_t *wp;
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size_t len;
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if (__predict_false(opts != NULL))
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return ERR;
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wp = wmemchr(wcval->vals, L'\0', CCHARW_MAX);
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len = wp ? wp - wcval->vals : CCHARW_MAX;
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if (wch == NULL)
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return (int)len;
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if (attrs == NULL || color_pair == NULL)
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return ERR;
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if (len > 0) {
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*attrs = wcval->attributes;
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if (__using_color)
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*color_pair = PAIR_NUMBER(wcval->attributes);
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else
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*color_pair = 0;
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wmemcpy(wch, wcval->vals, len);
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wch[len] = L'\0';
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}
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return OK;
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}
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/*
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* setcchar --
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* set cchar_t from a wide-character string and rendition
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*/
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int
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setcchar(cchar_t *wcval, const wchar_t *wch, const attr_t attrs,
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short color_pair, const void *opts)
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{
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int i;
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size_t len;
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if (__predict_false(opts != NULL))
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return ERR;
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len = wcslen(wch);
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if (len > CCHARW_MAX || (len > 1 && wcwidth(wch[0]) < 0))
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return ERR;
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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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wcval->attributes = attrs & ~__COLOR;
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if (__using_color && color_pair)
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wcval->attributes |= COLOR_PAIR(color_pair);
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wcval->elements = len;
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memcpy(&wcval->vals, wch, len * sizeof(wchar_t));
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}
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return OK;
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}
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void
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__cursesi_chtype_to_cchar(chtype in, cchar_t *out)
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{
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unsigned int idx;
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if (in & __ACS_IS_WACS) {
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idx = in & __CHARTEXT;
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if (idx < NUM_ACS) {
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memcpy(out, &_wacs_char[idx], sizeof(cchar_t));
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out->attributes |= in & __ATTRIBUTES;
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return;
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}
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}
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out->vals[0] = in & __CHARTEXT;
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out->attributes = in & __ATTRIBUTES;
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out->elements = 1;
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}
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