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// FileStreams.cpp
#include "StdAfx.h"
#ifndef _WIN32
#include <fcntl.h>
#include <unistd.h>
#include <errno.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
}
bool CInFileStream::Open(LPCTSTR fileName)
{
#ifdef ENV_UNIX
return File.Open(fileName,_ignoreSymbolicLink);
#else
return File.Open(fileName);
#endif
}
#ifdef USE_WIN_FILE
#ifndef _UNICODE
bool CInFileStream::Open(LPCWSTR fileName)
{
#ifdef ENV_UNIX
return File.Open(fileName,_ignoreSymbolicLink);
#else
return File.Open(fileName);
#endif
}
#endif
#endif
bool CInFileStream::OpenShared(LPCTSTR fileName, bool shareForWrite)
{
#ifdef ENV_UNIX
return File.Open(fileName,_ignoreSymbolicLink);
#else
return File.OpenShared(fileName, shareForWrite);
#endif
}
#ifdef USE_WIN_FILE
#ifndef _UNICODE
bool CInFileStream::OpenShared(LPCWSTR fileName, bool shareForWrite)
{
return File.OpenShared(fileName, shareForWrite);
}
#endif
#endif
STDMETHODIMP CInFileStream::Read(void *data, UInt32 size, UInt32 *processedSize)
{
#ifdef USE_WIN_FILE
UInt32 realProcessedSize;
bool result = File.ReadPart(data, size, realProcessedSize);
if(processedSize != NULL)
*processedSize = realProcessedSize;
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
}
#ifndef _WIN32_WCE
STDMETHODIMP CStdInFileStream::Read(void *data, UInt32 size, UInt32 *processedSize)
{
#ifdef _WIN32
UInt32 realProcessedSize;
BOOL res = ::ReadFile(GetStdHandle(STD_INPUT_HANDLE),
data, size, (DWORD *)&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
UInt64 realNewPosition;
bool result = File.Seek(offset, seekOrigin, realNewPosition);
if(newPosition != NULL)
*newPosition = realNewPosition;
return ConvertBoolToHRESULT(result);
#else
off_t res = File.Seek(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(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
}
#ifndef _WIN32_WCE
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
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