3.3

1 files changed, 142 insertions, 0 deletions

diff --git a/library/Recycler/recycler.cpp b/library/Recycler/recycler.cpp
new file mode 100644
index 00000000..b551d4d0
--- /dev/null
+++ b/library/Recycler/recycler.cpp
@@ -0,0 +1,142 @@
+#include "recycler.h"
+
+#define WIN32_LEAN_AND_MEAN
+#include "windows.h"
+#include <Shellapi.h>     // Included for shell constants such as FO_* values
+#include <shobjidl.h>     // Required for necessary shell dependencies
+
+#include <algorithm>
+#include <string>
+#include <cstdio>
+#include <comdef.h>
+
+
+void writeString(const wchar_t* input, wchar_t* output, size_t outputBufferLen)
+{
+    const size_t newSize = min(wcslen(input) + 1, outputBufferLen); //including null-termination
+    memcpy(output, input, newSize * sizeof(wchar_t));
+    output[newSize-1] = 0; //if output buffer is too small...
+}
+
+
+std::wstring numberToHexString(const long number)
+{
+    wchar_t result[100];
+    swprintf(result, 100, L"0x%08x", number);
+    return std::wstring(result);
+}
+
+
+void writeErrorMsg(const wchar_t* input, HRESULT hr, wchar_t* output, size_t outputBufferLen)
+{
+    std::wstring formattedMsg(input);
+    formattedMsg += L" (";
+    formattedMsg += numberToHexString(hr);
+    formattedMsg += L": ";
+    formattedMsg += _com_error(hr).ErrorMessage();
+    formattedMsg += L")";
+
+    writeString(formattedMsg.c_str(), output, outputBufferLen);
+}
+
+
+//IShellItem resource management
+template <class T>
+class ReleaseAtExit
+{
+public:
+    ReleaseAtExit(T*& item) : item_(item) {}
+    ~ReleaseAtExit()
+    {
+        if (item_ != NULL)
+            item_->Release();
+    }
+private:
+    T*& item_;
+};
+
+
+bool Utility::moveToRecycleBin(const wchar_t* fileNames[],
+                               size_t         fileNo, //size of fileNames array
+                               wchar_t*		  errorMessage,
+                               size_t         errorBufferLen)
+{
+    HRESULT hr;
+
+    // Create the IFileOperation interface
+    IFileOperation* pfo = NULL;
+    ReleaseAtExit<IFileOperation> dummy(pfo);
+    hr = CoCreateInstance(CLSID_FileOperation,
+                          NULL,
+                          CLSCTX_ALL,
+                          IID_PPV_ARGS(&pfo));
+    if (FAILED(hr))
+    {
+        writeErrorMsg(L"Error calling \"CoCreateInstance\".", hr, errorMessage, errorBufferLen);
+        return false;
+    }
+
+    // Set the operation flags.  Turn off  all UI
+    // from being shown to the user during the
+    // operation.  This includes error, confirmation
+    // and progress dialogs.
+    hr = pfo->SetOperationFlags(FOF_ALLOWUNDO |
+                                FOF_NOCONFIRMATION |
+                                FOF_SILENT |
+                                FOF_NOERRORUI);
+    if (FAILED(hr))
+    {
+        writeErrorMsg(L"Error calling \"SetOperationFlags\".", hr, errorMessage, errorBufferLen);
+        return false;
+    }
+
+    for (size_t i = 0; i < fileNo; ++i)
+    {
+        //create file/folder item object
+        IShellItem* psiFile = NULL;
+        ReleaseAtExit<IShellItem> dummy2(psiFile);
+        hr = SHCreateItemFromParsingName(fileNames[i],
+                                         NULL,
+                                         IID_PPV_ARGS(&psiFile));
+        if (FAILED(hr))
+        {
+			    std::wstring message(L"Error calling \"SHCreateItemFromParsingName\" for file ");
+				message += std::wstring(L"\"") + fileNames[i] + L"\".";
+            writeErrorMsg(message.c_str(), hr, errorMessage, errorBufferLen);
+            return false;
+        }
+
+        hr = pfo->DeleteItem(psiFile, NULL);
+        if (FAILED(hr))
+        {
+            writeErrorMsg(L"Error calling \"DeleteItem\".", hr, errorMessage, errorBufferLen);
+            return false;
+        }
+    }
+
+    //perform actual operations
+    hr = pfo->PerformOperations();
+    if (FAILED(hr))
+    {
+        writeErrorMsg(L"Error calling \"PerformOperations\".", hr, errorMessage, errorBufferLen);
+        return false;
+    }
+
+    //check if errors occured: if FOFX_EARLYFAILURE is not used, PerformOperations() can return with success despite errors!
+    BOOL pfAnyOperationsAborted = FALSE;
+    hr = pfo->GetAnyOperationsAborted(&pfAnyOperationsAborted);
+    if (FAILED(hr))
+    {
+        writeErrorMsg(L"Error calling \"GetAnyOperationsAborted\".", hr, errorMessage, errorBufferLen);
+        return false;
+    }
+
+
+    if (pfAnyOperationsAborted == TRUE)
+    {
+        writeString(L"Operation did not complete successfully.", errorMessage, errorBufferLen);
+        return false;
+    }
+
+    return true;
+}