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author | 2015-01-11 08:10:25 +0100 | |
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committer | 2015-01-11 08:10:25 +0100 | |
commit | 6a23c2f3b766cf4fc7028628f76b5ff9396383f0 (patch) | |
tree | a01e16637118ae0c80f337119898bdf18f081e24 /3rdparty/lzma/CPP/7zip/Common/FileStreams.cpp | |
parent | 45ac9b351e0076c371de4c7453f59567b27b1cb6 (diff) |
Added full lzma sdk source (nw)
Diffstat (limited to '3rdparty/lzma/CPP/7zip/Common/FileStreams.cpp')
-rw-r--r-- | 3rdparty/lzma/CPP/7zip/Common/FileStreams.cpp | 394 |
1 files changed, 394 insertions, 0 deletions
diff --git a/3rdparty/lzma/CPP/7zip/Common/FileStreams.cpp b/3rdparty/lzma/CPP/7zip/Common/FileStreams.cpp new file mode 100644 index 00000000000..a8be8aa46e3 --- /dev/null +++ b/3rdparty/lzma/CPP/7zip/Common/FileStreams.cpp @@ -0,0 +1,394 @@ +// FileStreams.cpp + +#include "StdAfx.h" + +#ifndef _WIN32 +#include <fcntl.h> +#include <unistd.h> +#include <errno.h> +#endif + +#ifdef SUPPORT_DEVICE_FILE +#include "../../../C/Alloc.h" +#include "../../Common/Defs.h" +#endif + +#include "FileStreams.h" + +static inline HRESULT ConvertBoolToHRESULT(bool result) +{ + #ifdef _WIN32 + if (result) + return S_OK; + DWORD lastError = ::GetLastError(); + if (lastError == 0) + return E_FAIL; + return HRESULT_FROM_WIN32(lastError); + #else + return result ? S_OK: E_FAIL; + #endif +} + +#ifdef SUPPORT_DEVICE_FILE + +static const UInt32 kClusterSize = 1 << 18; +CInFileStream::CInFileStream(): + VirtPos(0), + PhyPos(0), + Buffer(0), + BufferSize(0) +{ +} + +#endif + +CInFileStream::~CInFileStream() +{ + #ifdef SUPPORT_DEVICE_FILE + MidFree(Buffer); + #endif +} + +STDMETHODIMP CInFileStream::Read(void *data, UInt32 size, UInt32 *processedSize) +{ + #ifdef USE_WIN_FILE + + #ifdef SUPPORT_DEVICE_FILE + if (processedSize != NULL) + *processedSize = 0; + if (size == 0) + return S_OK; + if (File.IsDeviceFile) + { + if (File.LengthDefined) + { + if (VirtPos >= File.Length) + return VirtPos == File.Length ? S_OK : E_FAIL; + UInt64 rem = File.Length - VirtPos; + if (size > rem) + size = (UInt32)rem; + } + for (;;) + { + const UInt32 mask = kClusterSize - 1; + UInt64 mask2 = ~(UInt64)mask; + UInt64 alignedPos = VirtPos & mask2; + if (BufferSize > 0 && BufferStartPos == alignedPos) + { + UInt32 pos = (UInt32)VirtPos & mask; + if (pos >= BufferSize) + return S_OK; + UInt32 rem = MyMin(BufferSize - pos, size); + memcpy(data, Buffer + pos, rem); + VirtPos += rem; + if (processedSize != NULL) + *processedSize += rem; + return S_OK; + } + + bool useBuffer = false; + if ((VirtPos & mask) != 0 || ((ptrdiff_t)data & mask) != 0 ) + useBuffer = true; + else + { + UInt64 end = VirtPos + size; + if ((end & mask) != 0) + { + end &= mask2; + if (end <= VirtPos) + useBuffer = true; + else + size = (UInt32)(end - VirtPos); + } + } + if (!useBuffer) + break; + if (alignedPos != PhyPos) + { + UInt64 realNewPosition; + bool result = File.Seek(alignedPos, FILE_BEGIN, realNewPosition); + if (!result) + return ConvertBoolToHRESULT(result); + PhyPos = realNewPosition; + } + + BufferStartPos = alignedPos; + UInt32 readSize = kClusterSize; + if (File.LengthDefined) + readSize = (UInt32)MyMin(File.Length - PhyPos, (UInt64)kClusterSize); + + if (Buffer == 0) + { + Buffer = (Byte *)MidAlloc(kClusterSize); + if (Buffer == 0) + return E_OUTOFMEMORY; + } + bool result = File.Read1(Buffer, readSize, BufferSize); + if (!result) + return ConvertBoolToHRESULT(result); + + if (BufferSize == 0) + return S_OK; + PhyPos += BufferSize; + } + + if (VirtPos != PhyPos) + { + UInt64 realNewPosition; + bool result = File.Seek(VirtPos, FILE_BEGIN, realNewPosition); + if (!result) + return ConvertBoolToHRESULT(result); + PhyPos = VirtPos = realNewPosition; + } + } + #endif + + UInt32 realProcessedSize; + bool result = File.ReadPart(data, size, realProcessedSize); + if (processedSize != NULL) + *processedSize = realProcessedSize; + #ifdef SUPPORT_DEVICE_FILE + VirtPos += realProcessedSize; + PhyPos += realProcessedSize; + #endif + return ConvertBoolToHRESULT(result); + + #else + + if (processedSize != NULL) + *processedSize = 0; + ssize_t res = File.Read(data, (size_t)size); + if (res == -1) + return E_FAIL; + if (processedSize != NULL) + *processedSize = (UInt32)res; + return S_OK; + + #endif +} + +#ifdef UNDER_CE +STDMETHODIMP CStdInFileStream::Read(void *data, UInt32 size, UInt32 *processedSize) +{ + size_t s2 = fread(data, 1, size, stdout); + if (processedSize != 0) + *processedSize = s2; + return (s2 = size) ? S_OK : E_FAIL; +} +#else +STDMETHODIMP CStdInFileStream::Read(void *data, UInt32 size, UInt32 *processedSize) +{ + #ifdef _WIN32 + + DWORD realProcessedSize; + UInt32 sizeTemp = (1 << 20); + if (sizeTemp > size) + sizeTemp = size; + BOOL res = ::ReadFile(GetStdHandle(STD_INPUT_HANDLE), data, sizeTemp, &realProcessedSize, NULL); + if (processedSize != NULL) + *processedSize = realProcessedSize; + if (res == FALSE && GetLastError() == ERROR_BROKEN_PIPE) + return S_OK; + return ConvertBoolToHRESULT(res != FALSE); + + #else + + if (processedSize != NULL) + *processedSize = 0; + ssize_t res; + do + { + res = read(0, data, (size_t)size); + } + while (res < 0 && (errno == EINTR)); + if (res == -1) + return E_FAIL; + if (processedSize != NULL) + *processedSize = (UInt32)res; + return S_OK; + + #endif +} + +#endif + +STDMETHODIMP CInFileStream::Seek(Int64 offset, UInt32 seekOrigin, + UInt64 *newPosition) +{ + if (seekOrigin >= 3) + return STG_E_INVALIDFUNCTION; + + #ifdef USE_WIN_FILE + + #ifdef SUPPORT_DEVICE_FILE + if (File.IsDeviceFile) + { + UInt64 newVirtPos = offset; + switch(seekOrigin) + { + case STREAM_SEEK_SET: break; + case STREAM_SEEK_CUR: newVirtPos += VirtPos; break; + case STREAM_SEEK_END: newVirtPos += File.Length; break; + default: return STG_E_INVALIDFUNCTION; + } + VirtPos = newVirtPos; + if (newPosition) + *newPosition = newVirtPos; + return S_OK; + } + #endif + + UInt64 realNewPosition; + bool result = File.Seek(offset, seekOrigin, realNewPosition); + + #ifdef SUPPORT_DEVICE_FILE + PhyPos = VirtPos = realNewPosition; + #endif + + if (newPosition != NULL) + *newPosition = realNewPosition; + return ConvertBoolToHRESULT(result); + + #else + + off_t res = File.Seek((off_t)offset, seekOrigin); + if (res == -1) + return E_FAIL; + if (newPosition != NULL) + *newPosition = (UInt64)res; + return S_OK; + + #endif +} + +STDMETHODIMP CInFileStream::GetSize(UInt64 *size) +{ + return ConvertBoolToHRESULT(File.GetLength(*size)); +} + + +////////////////////////// +// COutFileStream + +HRESULT COutFileStream::Close() +{ + return ConvertBoolToHRESULT(File.Close()); +} + +STDMETHODIMP COutFileStream::Write(const void *data, UInt32 size, UInt32 *processedSize) +{ + #ifdef USE_WIN_FILE + + UInt32 realProcessedSize; + bool result = File.WritePart(data, size, realProcessedSize); + ProcessedSize += realProcessedSize; + if (processedSize != NULL) + *processedSize = realProcessedSize; + return ConvertBoolToHRESULT(result); + + #else + + if (processedSize != NULL) + *processedSize = 0; + ssize_t res = File.Write(data, (size_t)size); + if (res == -1) + return E_FAIL; + if (processedSize != NULL) + *processedSize = (UInt32)res; + ProcessedSize += res; + return S_OK; + + #endif +} + +STDMETHODIMP COutFileStream::Seek(Int64 offset, UInt32 seekOrigin, UInt64 *newPosition) +{ + if (seekOrigin >= 3) + return STG_E_INVALIDFUNCTION; + #ifdef USE_WIN_FILE + + UInt64 realNewPosition; + bool result = File.Seek(offset, seekOrigin, realNewPosition); + if (newPosition != NULL) + *newPosition = realNewPosition; + return ConvertBoolToHRESULT(result); + + #else + + off_t res = File.Seek((off_t)offset, seekOrigin); + if (res == -1) + return E_FAIL; + if (newPosition != NULL) + *newPosition = (UInt64)res; + return S_OK; + + #endif +} + +STDMETHODIMP COutFileStream::SetSize(UInt64 newSize) +{ + #ifdef USE_WIN_FILE + UInt64 currentPos; + if (!File.Seek(0, FILE_CURRENT, currentPos)) + return E_FAIL; + bool result = File.SetLength(newSize); + UInt64 currentPos2; + result = result && File.Seek(currentPos, currentPos2); + return result ? S_OK : E_FAIL; + #else + return E_FAIL; + #endif +} + +#ifdef UNDER_CE +STDMETHODIMP CStdOutFileStream::Write(const void *data, UInt32 size, UInt32 *processedSize) +{ + size_t s2 = fwrite(data, 1, size, stdout); + if (processedSize != 0) + *processedSize = s2; + return (s2 = size) ? S_OK : E_FAIL; +} +#else +STDMETHODIMP CStdOutFileStream::Write(const void *data, UInt32 size, UInt32 *processedSize) +{ + if (processedSize != NULL) + *processedSize = 0; + + #ifdef _WIN32 + UInt32 realProcessedSize; + BOOL res = TRUE; + if (size > 0) + { + // Seems that Windows doesn't like big amounts writing to stdout. + // So we limit portions by 32KB. + UInt32 sizeTemp = (1 << 15); + if (sizeTemp > size) + sizeTemp = size; + res = ::WriteFile(GetStdHandle(STD_OUTPUT_HANDLE), + data, sizeTemp, (DWORD *)&realProcessedSize, NULL); + size -= realProcessedSize; + data = (const void *)((const Byte *)data + realProcessedSize); + if (processedSize != NULL) + *processedSize += realProcessedSize; + } + return ConvertBoolToHRESULT(res != FALSE); + + #else + + ssize_t res; + do + { + res = write(1, data, (size_t)size); + } + while (res < 0 && (errno == EINTR)); + if (res == -1) + return E_FAIL; + if (processedSize != NULL) + *processedSize = (UInt32)res; + return S_OK; + + return S_OK; + #endif +} + +#endif |