71 lines
1.4 KiB
C
71 lines
1.4 KiB
C
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/*
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UTF-8 wrapper for teapot
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Copyright (C) 2010 Joerg Walter
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "utf8.h"
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#include <string.h>
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#ifdef ENABLE_UTF8
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size_t mbslen(const char *s)
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{
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const unsigned char *str = (unsigned char *)s;
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size_t chars = 0;
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while (*str) {
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chars++;
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if (is_mbchar(*str++)) while (is_mbcont(*str)) str++;
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}
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return chars;
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}
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char *mbspos(const char *s, int ch)
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{
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const unsigned char *str = (unsigned char *)s;
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int chars = 0;
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if (ch < 0) {
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while (chars > ch) {
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chars--;
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while (is_mbcont(*--str));
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}
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} else {
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while (chars < ch && *str) {
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chars++;
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if (is_mbchar(*str++)) while (is_mbcont(*str)) str++;
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}
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}
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return (char *)(void *)str;
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}
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#else
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size_t mbslen(const char *str)
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{
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return strlen(str);
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}
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char *mbspos(const char *str, int ch)
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{
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return (char *)(void *)(str+ch);
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}
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#endif
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