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/*
* Jody Bruchon's string function library <jody@jodybruchon.com>
* Copyright (C) 2015-2021
* Released under The MIT License
*/
#include <stdint.h>
#include <unistd.h>
/* Like strncasecmp() but only tests for equality */
extern int strncaseeq(const char *s1, const char *s2, size_t len)
{
size_t i = 0;
while (i < len) {
if (*s1 != *s2) {
unsigned char c1, c2;
c1 = *(const unsigned char *)s1;
c2 = *(const unsigned char *)s2;
/* Transform upper case to lower case */
if (c1 == 0 || c2 == 0) return 1;
if (c1 >= 'A' && c1 <= 'Z') c1 |= 0x20;
if (c2 >= 'A' && c2 <= 'Z') c2 |= 0x20;
if (c1 != c2) return 1;
} else {
if (*s1 == 0) return 0;
}
s1++; s2++;
i++;
}
return 0;
}
/* Like strcasecmp() but only tests for equality */
extern int strcaseeq(const char *s1, const char *s2)
{
while (1) {
if (*s1 != *s2) {
unsigned char c1, c2;
c1 = *(const unsigned char *)s1;
c2 = *(const unsigned char *)s2;
/* Transform upper case to lower case */
if (c1 == 0 || c2 == 0) return 1;
if (c1 >= 'A' && c1 <= 'Z') c1 |= 0x20;
if (c2 >= 'A' && c2 <= 'Z') c2 |= 0x20;
if (c1 != c2) return 1;
} else {
if (*s1 == 0) return 0;
}
s1++; s2++;
}
return 1;
}
/* Like strncmp() but only tests for equality */
extern int strneq(const char *s1, const char *s2, size_t len)
{
size_t i = 0;
if (!len) return 0;
while (*s1 != '\0' && *s2 != '\0') {
if (*s1 != *s2) return 1;
s1++; s2++; i++;
if (i == len) return 0;
}
if (*s1 != *s2) return 1;
return 0;
}
/* Like strcmp() but only tests for equality */
extern int streq(const char *s1, const char *s2)
{
while (*s1 != '\0' && *s2 != '\0') {
if (*s1 != *s2) return 1;
s1++; s2++;
}
if (*s1 != *s2) return 1;
return 0;
}
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