49 lines
1.7 KiB
C
Executable File
49 lines
1.7 KiB
C
Executable File
/* Locale dependent string transformation for comparison.
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Copyright (C) 2010-2024 Free Software Foundation, Inc.
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This program is free software: you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published
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by 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 GNU
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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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#ifndef ASTRXFRM_H
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#define ASTRXFRM_H
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#include <stddef.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Variant of strxfrm() with a calling convention that reduces the number
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of strxfrm calls. */
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/* Transform the string starting at S to a string, in such a way that
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comparing S1 and S2 with strcoll() is equivalent to comparing astrxfrm(S1)
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and astrxfrm(S2) with strcmp().
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The result of this function depends on the LC_COLLATE category of the
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current locale.
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If successful: If resultbuf is not NULL and the result fits into *lengthp
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bytes, it is put in resultbuf, and resultbuf is returned. Otherwise, a
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freshly allocated string is returned. In both cases, *lengthp is set to the
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length of the returned string.
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Upon failure, return NULL, with errno set. */
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extern char * astrxfrm (const char *s,
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char *restrict resultbuf, size_t *lengthp);
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#ifdef __cplusplus
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}
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#endif
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#endif /* ASTRXFRM_H */
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