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#include <ctype.h>
#include "internal.h"
/**
* Case insensitive string comparison
*
* \param s1 Pointer to string
* \param s2 Pointer to string
* \return 0 if strings match, <> 0 if no match
*/
int strcasecmp(const char *s1, const char *s2)
{
int i;
if (!s1 || !s2)
return 1; /* this is arbitrary */
if (s1 == s2)
return 0;
while ((i = tolower(*s1)) && i == tolower(*s2))
s1++, s2++;
return ((unsigned char) tolower(*s1) - (unsigned char) tolower(*s2));
}
/**
* Length-limited case insensitive string comparison
*
* \param s1 Pointer to string
* \param s2 Pointer to string
* \param len Length to compare
* \return 0 if strings match, <> 0 if no match
*/
int strncasecmp(const char *s1, const char *s2, size_t len)
{
int i;
if (!s1 || !s2)
return 1; /* this is arbitrary */
if (len == 0)
return 0;
if (s1 == s2)
return 0;
while (len-- && (i = tolower(*s1)) && i == tolower(*s2))
s1++, s2++;
return ((unsigned char) tolower(*s1) - (unsigned char) tolower(*s2));
}
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