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An Image Decoder Based on IImgCtx

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25 May 20045 min read 176.7K   3.4K   57  
This article shows how to decode image with IImgCtx interface provided by IE
// SrchDir.cpp : implementation of the CSrchDir class
//

#include "stdafx.h"
#include "SrchDir.h"
#include "DirMng.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CSrchDir

IMPLEMENT_DYNCREATE(CSrchDir, CObject)

/////////////////////////////////////////////////////////////////////////////
// CSrchDir construction/destruction

CSrchDir::CSrchDir()
{
	// TODO: add construction code here
}

CSrchDir::~CSrchDir()
{
	m_arrayFiles.RemoveAll();
}

/////////////////////////////////////////////////////////////////////////////
// CSrchDir diagnostics

#ifdef _DEBUG
void CSrchDir::Dump(CDumpContext& dc) const
{
	CObject::Dump(dc);
}
#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
void CSrchDir::Initialize(const char* pszFiles, void* pParam)
{
	m_arrayFiles.RemoveAll();

	if (pszFiles)
	{
		char szFiles[_MAX_PATH];
		lstrcpy(szFiles, pszFiles);
		for(char* token = strtok(szFiles, " ;*");
			token != NULL;
			token = strtok( NULL, " ;*"))
		{
			m_arrayFiles.Add(token);
		}
	}
}

void CSrchDir::ChkDir(const char* pszPath)
{
	if (pszPath == NULL || *pszPath == '\0')
		return;

	char szNewPath[MAX_PATH];
	lstrcpy(szNewPath, pszPath);

	if (*(strrchr(szNewPath, '\\') + 1) != '\0')
		strcat(szNewPath, "\\");		// C:\;

	ChkDirForMultiExt(szNewPath);
}

void CSrchDir::ChkDirForMultiExt(const char* pszPath)
{
	WIN32_FIND_DATA fData;
	char szNewPath[MAX_PATH];

	strcpy(szNewPath, pszPath);
	strcat(szNewPath, "*.*");

	HANDLE h = ::FindFirstFile(szNewPath, &fData);
	if (h != (HANDLE) 0xFFFFFFFF)
	{
		do
		{
			if ((fData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) == 0)
			{
				if (IsValidFile(fData))
				{
					strcpy(szNewPath, pszPath);
					strcat(szNewPath, fData.cFileName);
					ChkFile(szNewPath, fData);
				}
			}
		} while (::FindNextFile(h, &fData));

		::FindClose(h);
	}
}

BOOL CSrchDir::IsValidFile(WIN32_FIND_DATA& fData)
{
	const char* p = strrchr(fData.cFileName, '.');
	if (p == NULL) return FALSE;
	for (int i = 0; i < m_arrayFiles.GetSize(); i++)
	{
		if (lstrcmpi(m_arrayFiles[i], p) == 0)
			return TRUE;
	}
	return FALSE;
}

/////////////////////////////////////////////////////////////////////////////
// CDirCounter
int CDirCounter::GetFilesInDir(const char* pszStartPath, const char* pszFiles)
{
	m_uiFiles = 0;

	Initialize(pszFiles, NULL);
	ChkDir(pszStartPath);

	return m_uiFiles;
}

void CDirCounter::ChkFile(const char* pszPath, WIN32_FIND_DATA& fData)
{
	m_uiFiles++;
}

/////////////////////////////////////////////////////////////////////////////
// CDirInfo
void CDirInfo::GetDirInfo(const char* pszStartPath, const char* pszFiles, void* pPara)
{
	m_pInfo = (FILE_INFO*) pPara;

	Initialize(pszFiles, NULL);
	ChkDir(pszStartPath);
}

void CDirInfo::ChkFile(const char* pszPath, WIN32_FIND_DATA& fData)
{
	m_pInfo->strFileName = pszPath;
	m_pInfo++;
}

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