137 lines
3.2 KiB
C
137 lines
3.2 KiB
C
/*
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* Copyright (c) 2010, Stefan Lankes
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of the <organization> nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <eduos/string.h>
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#ifndef HAVE_ARCH_MEMCPY
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void *memcpy(void *dest, const void *src, size_t count)
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{
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size_t i;
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if (BUILTIN_EXPECT(!dest || !src, 0))
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return dest;
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for (i = 0; i < count; i++)
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((char*)dest)[i] = ((char*)src)[i];
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return dest;
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}
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#endif
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#ifndef HAVE_ARCH_MEMSET
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void *memset(void *dest, int val, size_t count)
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{
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size_t i;
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if (BUILTIN_EXPECT(!dest, 0))
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return dest;
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for (i = 0; i < count; i++)
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((char*) dest)[i] = (char) val;
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return dest;
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}
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#endif
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#ifndef HAVE_ARCH_STRLEN
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size_t strlen(const char *str)
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{
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size_t len = 0;
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if (BUILTIN_EXPECT(!str, 0))
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return len;
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while (str[len] != '\0')
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len++;
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return len;
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}
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#endif
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#ifndef HAVE_ARCH_STRNCPY
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char* strncpy(char *dest, const char *src, size_t n)
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{
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size_t i;
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if (BUILTIN_EXPECT(!dest || !src, 0))
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return dest;
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for (i = 0 ; i < n && src[i] != '\0' ; i++)
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dest[i] = src[i];
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if (i < n)
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dest[i] = '\0';
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else
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dest[n-1] = '\0';
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return dest;
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}
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#endif
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#ifndef HAVE_ARCH_STRCPY
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char* strcpy(char *dest, const char *src)
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{
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size_t i;
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if (BUILTIN_EXPECT(!dest || !src, 0))
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return dest;
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for (i = 0 ; src[i] != '\0' ; i++)
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dest[i] = src[i];
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dest[i] = '\0';
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return dest;
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}
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#endif
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#ifndef HAVE_ARCH_STRCMP
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int strcmp(const char *s1, const char *s2)
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{
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while (*s1 != '\0' && *s1 == *s2) {
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s1++;
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s2++;
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}
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return (*(unsigned char *) s1) - (*(unsigned char *) s2);
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}
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#endif
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#ifndef HAVE_ARCH_STRNCMP
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int strncmp(const char *s1, const char *s2, size_t n)
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{
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if (BUILTIN_EXPECT(n == 0, 0))
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return 0;
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while (n-- != 0 && *s1 == *s2) {
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if (n == 0 || *s1 == '\0')
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break;
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s1++;
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s2++;
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}
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return (*(unsigned char *) s1) - (*(unsigned char *) s2);
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}
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#endif
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