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/*
* This file is part of Hubbub.
* Licensed under the MIT License,
* http://www.opensource.org/licenses/mit-license.php
* Copyright 2008 Andrew Sidwell
*/
#include <stddef.h>
#include <inttypes.h>
#include <stdbool.h>
#include "utils/string.h"
/**
* Check if one string starts with another.
*
* \param a String to compare
* \param a_len Length of first string
* \param b String to compare
* \param b_len Length of second string
*/
bool hubbub_string_starts(const uint8_t *a, size_t a_len,
const uint8_t *b, size_t b_len)
{
uint8_t z1, z2;
if (a_len < b_len)
return false;
for (const uint8_t *s1 = a, *s2 = b; b_len > 0; s1++, s2++, b_len--)
{
z1 = *s1;
z2 = *s2;
if (z1 != z2) return false;
if (!z1) return true;
}
return true;
}
/**
* Check that one string is exactly equal to another
*
* \param a String to compare
* \param a_len Length of first string
* \param b String to compare
* \param b_len Length of second string
*/
bool hubbub_string_match(const uint8_t *a, size_t a_len,
const uint8_t *b, size_t b_len)
{
if (a_len != b_len)
return false;
for (const uint8_t *s1 = a, *s2 = b; b_len > 0; s1++, s2++, b_len--)
{
if (*s1 != *s2) return false;
}
return true;
}
/**
* Check that one string is case-insensitively equal to another
*
* \param a String to compare
* \param a_len Length of first string
* \param b String to compare
* \param b_len Length of second string
*/
bool hubbub_string_match_ci(const uint8_t *a, size_t a_len,
const uint8_t *b, size_t b_len)
{
uint8_t z1, z2;
if (a_len != b_len)
return false;
for (const uint8_t *s1 = a, *s2 = b; b_len > 0; s1++, s2++, b_len--)
{
z1 = (*s1 & ~0x20);
z2 = (*s2 & ~0x20);
if (z1 != z2) return false;
}
return true;
}
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