mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-12-02 01:48:05 +00:00
69 lines
2.0 KiB
C++
69 lines
2.0 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
|
|
/* 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/. */
|
|
|
|
#include "mozilla/Compression.h"
|
|
#include "mozilla/CheckedInt.h"
|
|
|
|
using namespace mozilla::Compression;
|
|
|
|
namespace {
|
|
|
|
#include "lz4.c"
|
|
|
|
}/* anonymous namespace */
|
|
|
|
/* Our wrappers */
|
|
|
|
size_t
|
|
LZ4::compress(const char* aSource, size_t aInputSize, char* aDest)
|
|
{
|
|
CheckedInt<int> inputSizeChecked = aInputSize;
|
|
MOZ_ASSERT(inputSizeChecked.isValid());
|
|
return LZ4_compress(aSource, aDest, inputSizeChecked.value());
|
|
}
|
|
|
|
size_t
|
|
LZ4::compressLimitedOutput(const char* aSource, size_t aInputSize, char* aDest,
|
|
size_t aMaxOutputSize)
|
|
{
|
|
CheckedInt<int> inputSizeChecked = aInputSize;
|
|
MOZ_ASSERT(inputSizeChecked.isValid());
|
|
CheckedInt<int> maxOutputSizeChecked = aMaxOutputSize;
|
|
MOZ_ASSERT(maxOutputSizeChecked.isValid());
|
|
return LZ4_compress_limitedOutput(aSource, aDest, inputSizeChecked.value(),
|
|
maxOutputSizeChecked.value());
|
|
}
|
|
|
|
bool
|
|
LZ4::decompress(const char* aSource, char* aDest, size_t aOutputSize)
|
|
{
|
|
CheckedInt<int> outputSizeChecked = aOutputSize;
|
|
MOZ_ASSERT(outputSizeChecked.isValid());
|
|
int ret = LZ4_decompress_fast(aSource, aDest, outputSizeChecked.value());
|
|
return ret >= 0;
|
|
}
|
|
|
|
bool
|
|
LZ4::decompress(const char* aSource, size_t aInputSize, char* aDest,
|
|
size_t aMaxOutputSize, size_t* aOutputSize)
|
|
{
|
|
CheckedInt<int> maxOutputSizeChecked = aMaxOutputSize;
|
|
MOZ_ASSERT(maxOutputSizeChecked.isValid());
|
|
CheckedInt<int> inputSizeChecked = aInputSize;
|
|
MOZ_ASSERT(inputSizeChecked.isValid());
|
|
|
|
int ret = LZ4_decompress_safe(aSource, aDest, inputSizeChecked.value(),
|
|
maxOutputSizeChecked.value());
|
|
if (ret >= 0) {
|
|
*aOutputSize = ret;
|
|
return true;
|
|
}
|
|
|
|
*aOutputSize = 0;
|
|
return false;
|
|
}
|
|
|