gecko-dev/netwerk/cache2/CacheHashUtils.h

62 строки
1.5 KiB
C++

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef CacheHashUtils__h__
#define CacheHashUtils__h__
#include "nsISupports.h"
#include "mozilla/Types.h"
#include "prnetdb.h"
#include "nsPrintfCString.h"
#define LOGSHA1(x) \
PR_htonl((reinterpret_cast<const uint32_t *>(x))[0]), \
PR_htonl((reinterpret_cast<const uint32_t *>(x))[1]), \
PR_htonl((reinterpret_cast<const uint32_t *>(x))[2]), \
PR_htonl((reinterpret_cast<const uint32_t *>(x))[3]), \
PR_htonl((reinterpret_cast<const uint32_t *>(x))[4])
#define SHA1STRING(x) \
(nsPrintfCString("%08x%08x%08x%08x%08x", LOGSHA1(x)).get())
namespace mozilla {
namespace net {
class CacheHash : public nsISupports
{
public:
NS_DECL_THREADSAFE_ISUPPORTS
typedef uint16_t Hash16_t;
typedef uint32_t Hash32_t;
static Hash32_t Hash(const char* aData, uint32_t aSize, uint32_t aInitval=0);
static Hash16_t Hash16(const char* aData, uint32_t aSize,
uint32_t aInitval=0);
CacheHash(uint32_t aInitval=0);
void Update(const char *aData, uint32_t aLen);
Hash32_t GetHash();
Hash16_t GetHash16();
private:
virtual ~CacheHash() {}
void Feed(uint32_t aVal, uint8_t aLen = 4);
uint32_t mA, mB, mC;
uint8_t mPos;
uint32_t mBuf;
uint8_t mBufPos;
uint32_t mLength;
bool mFinalized;
};
} // net
} // mozilla
#endif