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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,7 @@ | ||
| #pragma once | ||
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| #ifndef _XZ_SHARED_API | ||
| #define _XZ_SHARED_API | ||
| #endif | ||
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| _XZ_SHARED_API const char* DecompressXZ(size_t downloadedDataSize, const uint8_t* downloadedData, const char* fileName); |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,34 @@ | ||
| # Define the current source locations | ||
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| SET(CURRENT_HEADER_DIR ${CMAKE_SOURCE_DIR}/include/utils-xz) | ||
| SET(CURRENT_SOURCE_DIR ${CMAKE_SOURCE_DIR}/sources/utils-xz) | ||
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| FILE ( GLOB_RECURSE utils_xz_SOURCES "${CURRENT_HEADER_DIR}/*.h" "${CURRENT_SOURCE_DIR}/*.cpp" ) | ||
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| if (USE_SHARED_LIBS) | ||
| add_library(utils-xz SHARED ${utils_xz_SOURCES}) | ||
| if(WIN32) | ||
| target_compile_definitions(utils-xz | ||
| INTERFACE | ||
| "_XZ_SHARED_API=__declspec(dllimport)" | ||
| PRIVATE | ||
| "_XZ_SHARED_API=__declspec(dllexport)" | ||
| ) | ||
| else() | ||
| target_compile_definitions(utils-xz | ||
| INTERFACE | ||
| "_XZ_SHARED_API=__attribute__((visibility(\"default\")))" | ||
| ) | ||
| endif() | ||
| install( | ||
| TARGETS utils-xz | ||
| LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}" | ||
| ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}" | ||
| ) | ||
| else() | ||
| add_library(utils-xz STATIC ${utils_xz_SOURCES}) | ||
| endif() | ||
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| target_link_libraries(utils-xz PRIVATE LibLZMA::LibLZMA) | ||
| target_include_directories(utils-xz PRIVATE LibLZMA::LibLZMA) | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,85 @@ | ||
| #include <iostream> | ||
| #include <fstream> | ||
| #include <vector> | ||
| #include <lzma.h> | ||
| #include <utils-xz/utils-xz.h> | ||
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| _XZ_SHARED_API const char* DecompressXZ(size_t downloadedDataSize, const uint8_t* downloadedData, const char* fileName) | ||
| { | ||
| size_t outSize = 67174456; | ||
| std::vector<uint8_t> outBuffer; | ||
| const char* error = nullptr; | ||
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| std::ofstream file; | ||
| file.open(fileName, std::ios::out | std::ios::trunc | std::ios::binary); | ||
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| if (!file.is_open()) | ||
| { | ||
| return "Could not open file for writing"; | ||
| } | ||
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| try | ||
| { | ||
| outBuffer.resize(outSize); | ||
| } | ||
| catch(...) | ||
| { | ||
| error = "Could not allocate buffer"; | ||
| } | ||
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| if (error == nullptr) | ||
| { | ||
| const uint32_t flags = LZMA_TELL_UNSUPPORTED_CHECK | LZMA_CONCATENATED; | ||
| lzma_stream strm = LZMA_STREAM_INIT; | ||
| strm.next_in = downloadedData; | ||
| strm.avail_in = downloadedDataSize; | ||
| lzma_ret lzmaRet = lzma_stream_decoder(&strm, outSize, flags); | ||
| if (lzmaRet == LZMA_OK) | ||
| { | ||
| do { | ||
| strm.next_out = outBuffer.data(); | ||
| strm.avail_out = outSize; | ||
| lzmaRet = lzma_code(&strm, LZMA_FINISH); | ||
| if (lzmaRet == LZMA_MEMLIMIT_ERROR) | ||
| { | ||
| outSize = lzma_memusage(&strm); | ||
| try | ||
| { | ||
| outBuffer.resize(outSize); | ||
| } | ||
| catch (...) | ||
| { | ||
| error = "Could not increase buffer size"; | ||
| break; | ||
| } | ||
| lzma_memlimit_set(&strm, outSize); | ||
| strm.avail_out = 0; | ||
| } | ||
| else if (lzmaRet != LZMA_OK && lzmaRet != LZMA_STREAM_END) | ||
| { | ||
| error = "LZMA decoder returned error"; | ||
| break; | ||
| } | ||
| else | ||
| { | ||
| std::streamsize toWrite = static_cast<std::streamsize>(outSize - strm.avail_out); | ||
| file.write(reinterpret_cast<char*>(outBuffer.data()), toWrite); | ||
| } | ||
| } while (strm.avail_out == 0 && lzmaRet != LZMA_STREAM_END); | ||
| file.flush(); | ||
| } | ||
| else | ||
| { | ||
| error = "Could not initialize LZMA decoder"; | ||
| } | ||
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| lzma_end(&strm); | ||
| } | ||
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| file.close(); | ||
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| if (error != nullptr) | ||
| std::remove(fileName); | ||
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| return error; | ||
| } |