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// **************************************************************************
// * This file is part of the FreeFileSync project. It is distributed under *
// * GNU General Public License: http://www.gnu.org/licenses/gpl.html *
// * Copyright (C) ZenJu (zhnmju123 AT gmx DOT de) - All Rights Reserved *
// **************************************************************************
#include "file_op.h"
#include <algorithm>
#include <string>
#define WIN32_LEAN_AND_MEAN
#include <zen/com_ptr.h>
#include <zen/com_error.h>
#include <shellapi.h> //shell constants such as FO_* values
#include <shobjidl.h>
using namespace zen;
namespace
{
void moveToRecycleBin(const wchar_t* fileNames[], //throw ComError
size_t fileNo) //size of fileNames array
{
ComPtr<IFileOperation> fileOp;
ZEN_CHECK_COM(::CoCreateInstance(CLSID_FileOperation, //throw ComError
NULL,
CLSCTX_ALL,
IID_PPV_ARGS(fileOp.init())));
// Set the operation flags. Turn off all UI
// from being shown to the user during the
// operation. This includes error, confirmation
// and progress dialogs.
ZEN_CHECK_COM(fileOp->SetOperationFlags(FOF_ALLOWUNDO | //throw ComError
FOF_NOCONFIRMATION |
FOF_SILENT |
FOFX_EARLYFAILURE |
FOF_NOERRORUI));
int operationCount = 0;
for (size_t i = 0; i < fileNo; ++i)
{
//create file/folder item object
ComPtr<IShellItem> psiFile;
HRESULT hr = ::SHCreateItemFromParsingName(fileNames[i],
NULL,
IID_PPV_ARGS(psiFile.init()));
if (FAILED(hr))
{
if (hr == HRESULT_FROM_WIN32(ERROR_FILE_NOT_FOUND) || //file not existing anymore
hr == HRESULT_FROM_WIN32(ERROR_PATH_NOT_FOUND))
continue;
throw ComError(std::wstring(L"Error calling \"SHCreateItemFromParsingName\" for file:\n") + L"\"" + fileNames[i] + L"\".", hr);
}
ZEN_CHECK_COM(fileOp->DeleteItem(psiFile.get(), NULL));
++operationCount;
}
if (operationCount == 0) //calling PerformOperations() without anything to do would result in E_UNEXPECTED
return;
//perform actual operations
ZEN_CHECK_COM(fileOp->PerformOperations());
//check if errors occured: if FOFX_EARLYFAILURE is not used, PerformOperations() can return with success despite errors!
BOOL pfAnyOperationsAborted = FALSE;
ZEN_CHECK_COM(fileOp->GetAnyOperationsAborted(&pfAnyOperationsAborted));
if (pfAnyOperationsAborted == TRUE)
throw ComError(L"Operation did not complete successfully.");
}
void copyFile(const wchar_t* sourceFile, //throw ComError
const wchar_t* targetFile)
{
ComPtr<IFileOperation> fileOp;
ZEN_CHECK_COM(::CoCreateInstance(CLSID_FileOperation, //throw ComError
NULL,
CLSCTX_ALL,
IID_PPV_ARGS(fileOp.init())));
// Set the operation flags. Turn off all UI
// from being shown to the user during the
// operation. This includes error, confirmation
// and progress dialogs.
ZEN_CHECK_COM(fileOp->SetOperationFlags(FOF_NOCONFIRMATION | //throw ComError
FOF_SILENT |
FOFX_EARLYFAILURE |
FOF_NOERRORUI));
//create source object
ComPtr<IShellItem> psiSourceFile;
{
HRESULT hr = ::SHCreateItemFromParsingName(sourceFile,
NULL,
IID_PPV_ARGS(psiSourceFile.init()));
if (FAILED(hr))
throw ComError(std::wstring(L"Error calling \"SHCreateItemFromParsingName\" for file:\n") + L"\"" + sourceFile + L"\".", hr);
}
const size_t pos = std::wstring(targetFile).find_last_of(L'\\');
if (pos == std::wstring::npos)
throw ComError(L"Target filename does not contain a path separator.");
const std::wstring targetFolder(targetFile, pos);
const std::wstring targetFileNameShort = targetFile + pos + 1;
//create target folder object
ComPtr<IShellItem> psiTargetFolder;
{
HRESULT hr = ::SHCreateItemFromParsingName(targetFolder.c_str(),
NULL,
IID_PPV_ARGS(psiTargetFolder.init()));
if (FAILED(hr))
throw ComError(std::wstring(L"Error calling \"SHCreateItemFromParsingName\" for folder:\n") + L"\"" + targetFolder + L"\".", hr);
}
//schedule file copy operation
ZEN_CHECK_COM(fileOp->CopyItem(psiSourceFile.get(), psiTargetFolder.get(), targetFileNameShort.c_str(), NULL));
//perform actual operations
ZEN_CHECK_COM(fileOp->PerformOperations());
//check if errors occured: if FOFX_EARLYFAILURE is not used, PerformOperations() can return with success despite errors!
BOOL pfAnyOperationsAborted = FALSE;
ZEN_CHECK_COM(fileOp->GetAnyOperationsAborted(&pfAnyOperationsAborted));
if (pfAnyOperationsAborted == TRUE)
throw ComError(L"Operation did not complete successfully.");
}
inline
void copyString(const std::wstring& input, wchar_t* buffer, size_t bufferSize)
{
if (bufferSize > 0)
{
//size_t endPos = input.copy(buffer, bufferSize - 1);
//buffer[endPos] = 0;
const size_t maxSize = std::min(input.length(), bufferSize - 1);
std::copy(input.begin(), input.begin() + maxSize, buffer);
buffer[maxSize] = 0;
}
}
std::wstring lastErrorMessage; //this should really be thread-local!!!
}
bool fileop::moveToRecycleBin(const wchar_t* fileNames[],
size_t fileNo) //size of fileNames array
{
try
{
::moveToRecycleBin(fileNames, fileNo); //throw ComError
return true;
}
catch (const zen::ComError& e)
{
lastErrorMessage = e.toString();
return false;
}
}
bool fileop::copyFile(const wchar_t* sourceFile,
const wchar_t* targetFile)
{
try
{
::copyFile(sourceFile, targetFile); //throw ComError
return true;
}
catch (const zen::ComError& e)
{
lastErrorMessage = e.toString();
return false;
}
}
//if any of the functions above returns 'false', this message returns last error
void fileop::getLastError(wchar_t* errorMessage, size_t errorBufferLen)
{
copyString(lastErrorMessage, errorMessage, errorBufferLen);
}
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