miscutils.cpp

windows ce ImageViewer_ScriptDriven

//
// MiscUtils.cpp
//
// --------------------------------------------------------
// A Practical Guide to Script-Driven Software Development
// Author: Qiming Lu                        Date: 6/1/2006
// MSN Messager: [e-mail]
// MSN Blog: http://spaces.msn.com/jemylu
// --------------------------------------------------------

#include "stdafx.h"
#include "MiscUtils.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#endif

CString MiscUtils::mAppPath = "";
//////////////////////////////////////////////////////////////////////////////////////////////////
bool MiscUtils::IsSupportedImageFile(const char * inFilename)
{
	CString  strFile = inFilename;
	int nIndex = strFile.ReverseFind('.');
	if (nIndex != -1)
	{
		CString  strExt = strFile.Right(strFile.GetLength() - nIndex);
		if (strExt.CompareNoCase(".bmp") == 0 ||
			strExt.CompareNoCase(".jpg") == 0 ||
			strExt.CompareNoCase(".jpeg") == 0 ||
			strExt.CompareNoCase(".gif") == 0)
		{
			return true;
		}
	}
	return false;
}

bool MiscUtils::IsFileExist(const char * inFilename)
{
	WIN32_FIND_DATA sWin32FindData;
	HANDLE hFindFile = FindFirstFile(inFilename, &sWin32FindData);
	if (hFindFile != INVALID_HANDLE_VALUE)
	{
		FindClose(hFindFile);
		return true;
	}
	return false;
}

// NOT contain the back-slash!
CString& MiscUtils::GetAppFolder(void)
{
	if (mAppPath == "")
	{
		TCHAR appPath[1024];
		::GetModuleFileName(0, appPath, 1024);
		TCHAR * backSlash = strrchr(appPath, '\\');
		*backSlash = '\0';
		mAppPath = appPath;
	}
	return mAppPath;
}

CString MiscUtils::GetSkinFolder(void)
{
	return CString(GetAppFolder() + "\\Skin");
}

bool MiscUtils::BrowseImageFile(CString & outFilename)
{
	CString   strFilter = "JPEG File (*.jpg;*.jpeg)|*.jpg;*.jpeg|";
	strFilter += "GIF File (*.gif)|*.gif|";
	strFilter += "BMP File (*.bmp)|*.bmp|";
	strFilter += "All Files (*.*)|*.*|";
	CFileDialog dlgOpen(TRUE, NULL, NULL, OFN_HIDEREADONLY, strFilter, NULL);
	if (IDOK == dlgOpen.DoModal()) 
	{
		outFilename = dlgOpen.GetPathName();
		return true;
	}
	return false;
}

bool MiscUtils::SaveAsFile(CString & outFilename)
{
	CString   strFilter = "BMP File (*.bmp)|*.bmp|";
	CFileDialog dlgSave(FALSE, NULL, NULL, OFN_HIDEREADONLY, strFilter, NULL);
	if (IDOK == dlgSave.DoModal()) 
	{
		outFilename = dlgSave.GetPathName();
		if (-1 == outFilename.ReverseFind('.'))
		{
			outFilename += ".bmp";
		}
		return true;
	}
	return false;
}

// NOTE: caller is responsible for memory release referenced by outBuf.
bool MiscUtils::LoadScriptFile(const char * inFile, wchar_t** outBuf)
{
	// Open the .js file and read out the scripts.
	FILE * fp = fopen(inFile, "rb");
	if (fp)
	{
		// First to determine the file size.
		fseek(fp, 0, SEEK_END);
		long fileSize = ftell(fp);
		if (fileSize <= 0)
		{
			fclose(fp);
			return false;
		}

		// Read scripts out of the source file.
		long  charCount = fileSize + 1; // including a null ternimator.
		char * pScripts = new char[charCount];
		memset(pScripts, 0, charCount);
		fseek(fp, 0, SEEK_SET);
		fread(pScripts, 1, fileSize, fp);
		fclose(fp);

		// Convert scripts to wide characters.
		*outBuf = new wchar_t[charCount];
		::MultiByteToWideChar(CP_ACP, 0, pScripts, -1, *outBuf, charCount);
		delete[] pScripts;
		return true;
	}

	return false;
}