NAME

byte_str byte_istr - locate a byte array within another byte array

SYNOPSIS

#include <limb/bytestr.h>

size_t byte_str(const char *haystack, size_t hlen, const char *needle, size_t nlen)
size_t byte_istr(const char *haystack, size_t hlen, const char *needle, size_t nlen)

DESCRIPTION

The byte_str() function looks for the first occurrence of the byte array needle of length nlen in the byte array haystack of length hlen.

Neither haystack nor needle need be NUL-terminated, and in fact can contain themselves bytes of any value.

The byte_istr() function is similar but performing case-insensitive comparisons for the current locale. (Specifically, it relies on tolower(3).)

RETURN VALUE

The byte_str() and byte_istr() functions return the offset of the first occurrence of needle within haystack if found. Otherwise, they returns hlen.