зеркало из https://github.com/github/ruby.git
25 строки
838 B
C
25 строки
838 B
C
#include "prism/util/pm_strncasecmp.h"
|
|
|
|
/**
|
|
* Compare two strings, ignoring case, up to the given length. Returns 0 if the
|
|
* strings are equal, a negative number if string1 is less than string2, or a
|
|
* positive number if string1 is greater than string2.
|
|
*
|
|
* Note that this is effectively our own implementation of strncasecmp, but it's
|
|
* not available on all of the platforms we want to support so we're rolling it
|
|
* here.
|
|
*/
|
|
int
|
|
pm_strncasecmp(const uint8_t *string1, const uint8_t *string2, size_t length) {
|
|
size_t offset = 0;
|
|
int difference = 0;
|
|
|
|
while (offset < length && string1[offset] != '\0') {
|
|
if (string2[offset] == '\0') return string1[offset];
|
|
if ((difference = tolower(string1[offset]) - tolower(string2[offset])) != 0) return difference;
|
|
offset++;
|
|
}
|
|
|
|
return difference;
|
|
}
|