The Tor Browser / file comparison
comparison: mfbt/Compression.cpp
mfbt/Compression.cpp
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
equal
deleted
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replaced
| -1:000000000000 | 0:6587e910ba4a |
|---|---|
| 1 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 2 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 4 | |
| 5 #include "mozilla/Compression.h" | |
| 6 #include "mozilla/CheckedInt.h" | |
| 7 using namespace mozilla::Compression; | |
| 8 | |
| 9 namespace { | |
| 10 | |
| 11 #include "lz4.c" | |
| 12 | |
| 13 }/* anonymous namespace */ | |
| 14 | |
| 15 /* Our wrappers */ | |
| 16 | |
| 17 size_t | |
| 18 LZ4::compress(const char* source, size_t inputSize, char* dest) | |
| 19 { | |
| 20 CheckedInt<int> inputSizeChecked = inputSize; | |
| 21 MOZ_ASSERT(inputSizeChecked.isValid()); | |
| 22 return LZ4_compress(source, dest, inputSizeChecked.value()); | |
| 23 } | |
| 24 | |
| 25 size_t | |
| 26 LZ4::compressLimitedOutput(const char* source, size_t inputSize, char* dest, size_t maxOutputSize) | |
| 27 { | |
| 28 CheckedInt<int> inputSizeChecked = inputSize; | |
| 29 MOZ_ASSERT(inputSizeChecked.isValid()); | |
| 30 CheckedInt<int> maxOutputSizeChecked = maxOutputSize; | |
| 31 MOZ_ASSERT(maxOutputSizeChecked.isValid()); | |
| 32 return LZ4_compress_limitedOutput(source, dest, inputSizeChecked.value(), | |
| 33 maxOutputSizeChecked.value()); | |
| 34 } | |
| 35 | |
| 36 bool | |
| 37 LZ4::decompress(const char* source, char* dest, size_t outputSize) | |
| 38 { | |
| 39 CheckedInt<int> outputSizeChecked = outputSize; | |
| 40 MOZ_ASSERT(outputSizeChecked.isValid()); | |
| 41 int ret = LZ4_decompress_fast(source, dest, outputSizeChecked.value()); | |
| 42 return ret >= 0; | |
| 43 } | |
| 44 | |
| 45 bool | |
| 46 LZ4::decompress(const char* source, size_t inputSize, char* dest, size_t maxOutputSize, | |
| 47 size_t *outputSize) | |
| 48 { | |
| 49 CheckedInt<int> maxOutputSizeChecked = maxOutputSize; | |
| 50 MOZ_ASSERT(maxOutputSizeChecked.isValid()); | |
| 51 CheckedInt<int> inputSizeChecked = inputSize; | |
| 52 MOZ_ASSERT(inputSizeChecked.isValid()); | |
| 53 | |
| 54 int ret = LZ4_decompress_safe(source, dest, inputSizeChecked.value(), | |
| 55 maxOutputSizeChecked.value()); | |
| 56 if (ret >= 0) { | |
| 57 *outputSize = ret; | |
| 58 return true; | |
| 59 } else { | |
| 60 *outputSize = 0; | |
| 61 return false; | |
| 62 } | |
| 63 } | |
| 64 |
