cdrtools/libschily/strcasecmp.c
2025-06-15 04:19:58 +08:00

47 lines
1.1 KiB
C

/* @(#)strcasecmp.c 1.1 11/11/24 Copyright 2011 J. Schilling */
/*
* strcasecmp() to be used if missing in libc
*
* Copyright (c) 2011 J. Schilling
*/
/*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* See the file CDDL.Schily.txt in this distribution for details.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file CDDL.Schily.txt from this distribution.
*/
#include <schily/standard.h>
#include <schily/string.h>
#include <schily/schily.h>
#ifndef HAVE_STRCASECMP
EXPORT int strcasecmp __PR((const char *s1, const char *s2));
EXPORT int
strcasecmp(s1, s2)
register const char *s1;
register const char *s2;
{
extern const char js_strcase_charmap[];
register const char *chm = js_strcase_charmap;
if (s1 == s2)
return (0);
while (chm[* (const unsigned char *)s1] ==
chm[* (const unsigned char *)s2++]) {
if (*s1++ == '\0')
return (0);
}
return (chm[*(unsigned char *)s1] - chm[*(unsigned char *)(--s2)]);
}
#endif