2fcf520184
Often, a pointer is more useful than a length when calling these. Link: <https://docs.oracle.com/cd/E86824_01/html/E54769/strrspn-3gen.html> Signed-off-by: Alejandro Colomar <alx@kernel.org>
39 lines
735 B
C
39 lines
735 B
C
// SPDX-FileCopyrightText: 2024, Alejandro Colomar <alx@kernel.org>
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// SPDX-License-Identifier: BSD-3-Clause
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#ifndef SHADOW_INCLUDE_LIB_STRING_STRCHR_STRRSPN_H_
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#define SHADOW_INCLUDE_LIB_STRING_STRCHR_STRRSPN_H_
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#include <config.h>
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#include <string.h>
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#include "attr.h"
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#include "string/strchr/strnul.h"
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ATTR_STRING(2)
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inline char *strrspn(char *restrict s, const char *restrict accept);
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// Available in Oracle Solaris: strrspn(3GEN).
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// <https://docs.oracle.com/cd/E36784_01/html/E36877/strrspn-3gen.html>
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inline char *
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strrspn(char *restrict s, const char *restrict accept)
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{
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char *p;
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p = strnul(s);
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while (p > s) {
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p--;
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if (strchr(accept, *p) == NULL)
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return p + 1;
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}
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return s;
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}
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#endif // include guard
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