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71 lines
1.7 KiB
C
71 lines
1.7 KiB
C
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/*
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* Copyright (c) 2016 Joshua Rubin <joshua@rubixconsulting.com>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
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* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/types.h>
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#include <utf8proc.h>
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#include "tmux.h"
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int
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utf8proc_wcwidth(wchar_t wc)
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{
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int cat;
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cat = utf8proc_category(wc);
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if (cat == UTF8PROC_CATEGORY_CO) {
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/*
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* The private use category is where powerline and similar
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* codepoints are stored, they have "ambiguous" width - use 1.
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*/
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return (1);
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}
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if (cat == UTF8PROC_CATEGORY_SO) {
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/* Symbols, like emoji, should always use width 1. */
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return (1);
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}
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return (utf8proc_charwidth(wc));
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}
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int
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utf8proc_mbtowc(wchar_t *pwc, const char *s, size_t n)
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{
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utf8proc_ssize_t slen;
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if (s == NULL)
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return (0);
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/*
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* *pwc == -1 indicates invalid codepoint
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* slen < 0 indicates an error
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*/
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slen = utf8proc_iterate(s, n, pwc);
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if (*pwc == (wchar_t)-1 || slen < 0)
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return (-1);
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return (slen);
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}
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int
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utf8proc_wctomb(char *s, wchar_t wc)
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{
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if (s == NULL)
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return (0);
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if (!utf8proc_codepoint_valid(wc))
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return (-1);
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return (utf8proc_encode_char(wc, s));
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}
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