directoryiterator.h

来自「This software aims to create an applet a」· C头文件 代码 · 共 174 行

//
// DirectoryIterator.h
//
// $Id: //poco/Main/Foundation/include/Foundation/DirectoryIterator.h#5 $
//
// Definition of the DirectoryIterator class.
//
// Copyright (c) 2004, Guenter Obiltschnig/Applied Informatics.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
//
// 1. Redistributions of source code must retain the above copyright
//    notice, this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
//    documentation and/or other materials provided with the distribution.
//
// 3. Redistributions in any form must be accompanied by information on
//    how to obtain complete source code for this software and any
//    accompanying software that uses this software.  The source code
//    must either be included in the distribution or be available for no
//    more than the cost of distribution plus a nominal fee, and must be
//    freely redistributable under reasonable conditions.  For an
//    executable file, complete source code means the source code for all
//    modules it contains.  It does not include source code for modules or
//    files that typically accompany the major components of the operating
//    system on which the executable file runs.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
// COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//


#ifndef Foundation_DirectoryIterator_INCLUDED
#define Foundation_DirectoryIterator_INCLUDED


#ifndef Foundation_Foundation_INCLUDED
#include "Foundation/Foundation.h"
#endif
#ifndef Foundation_File_INCLUDED
#include "Foundation/File.h"
#endif
#ifndef Foundation_Path_INCLUDED
#include "Foundation/Path.h"
#endif


Foundation_BEGIN


class DirectoryIteratorImp;


class Foundation_API DirectoryIterator
	/// The DirectoryIterator class is used to enumerate
	/// all files in a directory.
{
public:
	DirectoryIterator();
		/// Creates the end iterator.
		
	DirectoryIterator(const std::string& path);
		/// Creates a directory iterator for the given path.

	DirectoryIterator(const DirectoryIterator& iterator);
		/// Creates a directory iterator for the given path.
		
	DirectoryIterator(const File& file);
		/// Creates a directory iterator for the given file.

	DirectoryIterator(const Path& path);
		/// Creates a directory iterator for the given path.

	~DirectoryIterator();
		/// Destroys the DirectoryIterator.

	const std::string& name() const;
		/// Returns the current filename.
		
	const Path& path() const;
		/// Returns the current path.

	DirectoryIterator& operator = (const DirectoryIterator& it);
	DirectoryIterator& operator = (const File& file);
	DirectoryIterator& operator = (const Path& path);
	DirectoryIterator& operator = (const std::string& path);
	
	DirectoryIterator& operator ++ ();   // prefix
	DirectoryIterator operator ++ (int); // postfix
	const File& operator * () const;
	File& operator * ();
	const File* operator -> () const;
	File* operator -> ();
	bool operator == (const DirectoryIterator& iterator) const;
	bool operator != (const DirectoryIterator& iterator) const;

private:
	Path _path;
	File _file;
	DirectoryIteratorImp* _pImp;
};


//
// inlines
//
inline const std::string& DirectoryIterator::name() const
{
	return _path.getFileName();
}

	
inline const Path& DirectoryIterator::path() const
{
	return _path;
}


inline const File& DirectoryIterator::operator * () const
{
	return _file;
}


inline File& DirectoryIterator::operator * ()
{
	return _file;
}


inline const File* DirectoryIterator::operator -> () const
{
	return &_file;
}


inline File* DirectoryIterator::operator -> ()
{
	return &_file;
}


inline bool DirectoryIterator::operator == (const DirectoryIterator& iterator) const
{
	return name() == iterator.name();
}


inline bool DirectoryIterator::operator != (const DirectoryIterator& iterator) const
{
	return name() != iterator.name();
}


Foundation_END


#endif // Foundation_DirectoryIterator_INCLUDED