48 lines
1.4 KiB
C
Executable File
48 lines
1.4 KiB
C
Executable File
/* Search a wide string for any of a set of wide characters.
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Copyright (C) 1999, 2011-2024 Free Software Foundation, Inc.
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Written by Bruno Haible <bruno@clisp.org>, 1999.
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This file is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation, either version 3 of the
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License, or (at your option) any later version.
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This file 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 Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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wchar_t *
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wcspbrk (const wchar_t *wcs, const wchar_t *accept)
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{
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/* Optimize two cases. */
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if (accept[0] == (wchar_t)'\0')
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return NULL;
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if (accept[1] == (wchar_t)'\0')
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{
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wchar_t wc = accept[0];
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const wchar_t *ptr = wcs;
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for (; *ptr != (wchar_t)'\0'; ptr++)
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{
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if (*ptr == wc)
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return (wchar_t *) ptr;
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}
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return NULL;
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}
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/* General case. */
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{
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const wchar_t *ptr = wcs;
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for (; *ptr != (wchar_t)'\0'; ptr++)
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{
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if (wcschr (accept, *ptr))
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return (wchar_t *) ptr;
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}
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return NULL;
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}
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}
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