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// RootElement.cpp
//
// written by: PJ Arends
// Modified by: Wong Shao Voon
// License Ms-PL
#include "stdafx.h"
#include "RootElement.h"
using namespace Elmax;
bool RootElement::LoadFile(const std::wstring &FilePath)
{
bool retval(false);
UnloadFile();
HRESULT hr = m_ptrDoc.CreateInstance(__uuidof(MSXML2::DOMDocument30));
#ifdef _DEBUG
if (hr == CO_E_NOTINITIALIZED)
{
throw std::runtime_error("CoInitialize has not been called for this thread");
}
#endif
if (SUCCEEDED(hr))
{
retval = true;
m_ptrDoc->async = VARIANT_FALSE;
m_ptrDoc->validateOnParse = VARIANT_FALSE;
m_ptrDoc->resolveExternals = VARIANT_FALSE;
if (FileExists(FilePath))
{ // Open existing file
variant_t varFile(FilePath.c_str());
// load will fail if the file has malformed xml
if (m_ptrDoc->load(varFile) != VARIANT_TRUE)
{
retval = false;
}
}
if (retval)
{
SetConverter(REGEX_CONV);
SetDomDoc(m_ptrDoc);
m_FilePath = FilePath;
}
}
return retval;
}
bool RootElement::CanWriteFile(const std::wstring& FilePath, bool OverWrite, bool CreateFolder)
{
if (FileExists(FilePath))
{
return OverWrite;
}
std::wstring Folder = GetFolder(FilePath);
if (FolderExists(Folder))
{
return true;
}
if (CreateFolder)
{
return CreateDirectory(Folder);
}
return false;
}
bool RootElement::SaveFile(const std::wstring& FilePath, bool OverWrite, bool CreateFolder)
{
if (NULL == m_ptrDoc)
{
return false;
}
if (!FilePath.empty())
{
m_FilePath = FilePath;
}
if (CanWriteFile(m_FilePath, OverWrite, CreateFolder))
{
variant_t varFile(m_FilePath.c_str());
Elmax::Document doc(m_ptrDoc);
return doc.PrettySave(m_FilePath, L"1.0", true);
}
return false;
}
bool RootElement::UnloadFile()
{
m_ptrDoc = NULL; // calls Release() for us
m_FilePath.clear();
return true;
}
RootElement::~RootElement()
{
UnloadFile();
}
RootElement& RootElement::operator = (const RootElement &other)
{
UnloadFile();
Element::operator=(other);
m_FilePath = other.m_FilePath;
return *this;
}
bool RootElement::SetFilePath(std::wstring FilePath)
{
if (NULL == m_ptrDoc)
{
return false;
}
m_FilePath = FilePath;
return true;
}
bool RootElement::FileExists(const std::wstring& fileName)
{
DWORD fileAttr = GetFileAttributes(fileName.c_str());
if (INVALID_FILE_ATTRIBUTES == fileAttr)
return false;
return true;
}
bool RootElement::FolderExists(const std::wstring& Path)
{
DWORD dwAttrib = GetFileAttributes(Path.c_str());
return (dwAttrib != INVALID_FILE_ATTRIBUTES &&
(dwAttrib & FILE_ATTRIBUTE_DIRECTORY));
}
std::wstring RootElement::GetFolder(const std::wstring& FilePath)
{
std::wstring Folder = L"";
size_t pos = FilePath.find_last_of(L'\\');
if(pos!=-1)
Folder = FilePath.substr(0, pos);
return Folder;
}
bool RootElement::CreateDirectory(const std::wstring& dd)
{
HANDLE fFile; // File Handle
WIN32_FIND_DATA fileinfo; // File Information Structure
std::vector<std::wstring> arr; // CString Array to hold Directory Structures
BOOL tt; // BOOL used to test if Create Directory was successful
size_t x1 = 0; // Counter
std::wstring tem = L""; // Temporary CString Object
// Before we go to a lot of work.
// Does the file exist
fFile = FindFirstFile(dd.c_str(),&fileinfo);
// if the file exists and it is a directory
if(fileinfo.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
{
// Directory Exists close file and return
FindClose(fFile);
return TRUE;
}
arr.clear(); // Not really necessary - Just habit
for(x1=0;x1<dd.length();x1++) // Parse the supplied CString Directory String
{
if(dd.at(x1) != L'\\') // if the Charachter is not a \
tem += dd.at(x1); // else add character to Temp String
else
{
arr.push_back(tem); // if the Character is a \ Add the Temp String to the CString Array
tem.append(L"\\"); // Now add the \ to the temp string
}
if(x1 == dd.length()-1) // If we reached the end of the file add the remaining string
arr.push_back(tem);
}
// Close the file
FindClose(fFile);
// Now lets cycle through the String Array and create each directory in turn
for(x1 = 1;x1<arr.size();x1++)
{
tem = arr[x1];
tt = ::CreateDirectory(tem.c_str(),NULL);
// If the Directory exists it will return a false
if(tt)
SetFileAttributes(tem.c_str(),FILE_ATTRIBUTE_NORMAL);
// If we were successful we set the attributes to normal
}
arr.clear();
// Now lets see if the directory was successfully created
fFile = FindFirstFile(dd.c_str(),&fileinfo);
// if the file exists and it is a directory
if(fileinfo.dwFileAttributes == FILE_ATTRIBUTE_DIRECTORY)
{
// Directory Exists close file and return
FindClose(fFile);
return true;
}
else
{
FindClose(fFile);
return false;
}
}
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Shao Voon is from Singapore. His interest lies primarily in computer graphics, software optimization, concurrency, security, and Agile methodologies.
In recent years, he shifted focus to software safety research. His hobby is writing a free C++ DirectX photo slideshow application which can be viewed
here.