43 lines
941 B
C
43 lines
941 B
C
/* @(#)strnlen.c 1.3 10/05/07 Copyright 2010 J. Schilling */
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/*
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* strnlen() to be used if missing in libc
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*
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* Copyright (c) 2010 J. Schilling
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*/
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/*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* See the file CDDL.Schily.txt in this distribution for details.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file CDDL.Schily.txt from this distribution.
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*/
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#include <schily/standard.h>
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#include <schily/unistd.h>
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#include <schily/schily.h>
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#ifndef HAVE_STRNLEN
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EXPORT size_t
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strnlen(s, len)
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register const char *s;
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register size_t len;
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{
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register const char *rs = s;
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if (len == 0)
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return (0);
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while (*rs++ != '\0' && --len > 0)
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;
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if (len == 0)
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return (rs - s);
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return (--rs - s);
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}
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#endif
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