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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// A wrapper around ZLib's CRC functions to put them in the rlz_lib namespace
// and use our types.
#include "rlz/lib/assert.h"
#include "rlz/lib/crc32.h"
#include "rlz/lib/string_utils.h"
#include "third_party/zlib/zlib.h"
namespace rlz_lib {
int Crc32(const unsigned char* buf, int length) {
return crc32(0L, buf, length);
}
bool Crc32(const char* text, int* crc) {
if (!crc) {
ASSERT_STRING("Crc32: crc is NULL.");
return false;
}
*crc = 0;
for (int i = 0; text[i]; i++) {
if (!IsAscii(text[i]))
return false;
*crc = crc32(*crc, reinterpret_cast<const unsigned char*>(text + i), 1);
}
return true;
}
} // namespace rlz_lib
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