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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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