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98 lines
2.1 KiB
C
98 lines
2.1 KiB
C
/* $OpenBSD$ */
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/*
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* Copyright (c) 2023 Nicholas Marriott <nicholas.marriott@gmail.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 <stdlib.h>
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#include <string.h>
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#include <wchar.h>
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#include "tmux.h"
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/* Has this got a zero width joiner at the end? */
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int
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utf8_has_zwj(const struct utf8_data *ud)
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{
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if (ud->size < 3)
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return (0);
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return (memcmp(ud->data + ud->size - 3, "\342\200\215", 3) == 0);
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}
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/* Is this a zero width joiner? */
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int
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utf8_is_zwj(const struct utf8_data *ud)
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{
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if (ud->size != 3)
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return (0);
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return (memcmp(ud->data, "\342\200\215", 3) == 0);
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}
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/* Is this a variation selector? */
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int
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utf8_is_vs(const struct utf8_data *ud)
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{
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if (ud->size != 3)
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return (0);
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return (memcmp(ud->data, "\357\270\217", 3) == 0);
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}
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/* Is this in the modifier table? */
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int
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utf8_is_modifier(const struct utf8_data *ud)
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{
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wchar_t wc;
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if (utf8_towc(ud, &wc) != UTF8_DONE)
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return (0);
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switch (wc) {
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case 0x1F1E6:
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case 0x1F1E7:
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case 0x1F1E8:
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case 0x1F1E9:
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case 0x1F1EA:
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case 0x1F1EB:
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case 0x1F1EC:
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case 0x1F1ED:
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case 0x1F1EE:
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case 0x1F1EF:
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case 0x1F1F0:
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case 0x1F1F1:
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case 0x1F1F2:
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case 0x1F1F3:
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case 0x1F1F4:
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case 0x1F1F5:
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case 0x1F1F6:
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case 0x1F1F7:
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case 0x1F1F8:
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case 0x1F1F9:
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case 0x1F1FA:
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case 0x1F1FB:
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case 0x1F1FC:
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case 0x1F1FD:
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case 0x1F1FE:
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case 0x1F1FF:
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case 0x1F3FB:
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case 0x1F3FC:
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case 0x1F3FD:
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case 0x1F3FE:
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case 0x1F3FF:
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return (1);
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}
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return (0);
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}
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