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https://github.com/pocoproject/poco.git
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46c3d74c5f
1) Recursive and SortedDirectoryIterator - added to VS projects - fixed some style/formatting - fxed windows tests 2) Added ListMap Poco::ListMap is a std::mulitimap-like container that preserves insertion order (needed to prevent Net message headers)
275 lines
6.9 KiB
C++
275 lines
6.9 KiB
C++
//
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// RecursiveDirectoryIterator.h
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//
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// $Id$
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//
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// Library: Foundation
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// Package: Filesystem
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// Module: RecursiveDirectoryIterator
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//
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// Definition of the RecursiveDirectoryIterator class.
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//
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// Copyright (c) 2012, Applied Informatics Software Engineering GmbH.
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// and Contributors.
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//
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// Permission is hereby granted, free of charge, to any person or organization
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// obtaining a copy of the software and accompanying documentation covered by
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// this license (the "Software") to use, reproduce, display, distribute,
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// execute, and transmit the Software, and to prepare derivative works of the
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// Software, and to permit third-parties to whom the Software is furnished to
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// do so, all subject to the following:
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//
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// The copyright notices in the Software and this entire statement, including
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// the above license grant, this restriction and the following disclaimer,
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// must be included in all copies of the Software, in whole or in part, and
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// all derivative works of the Software, unless such copies or derivative
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// works are solely in the form of machine-executable object code generated by
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// a source language processor.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
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// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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#ifndef Foundation_RecursiveDirectoryIterator_INCLUDE
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#define Foundation_RecursiveDirectoryIterator_INCLUDE
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#include "Poco/Foundation.h"
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#include "Poco/File.h"
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#include "Poco/Path.h"
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#include "Poco/RecursiveDirectoryIteratorImpl.h"
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#include "Poco/DirectoryIteratorStrategy.h"
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namespace Poco {
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class DirectoryIterator;
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template<class TTravStr>
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class RecursiveDirectoryIteratorImpl;
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template<class TTravStr = ChildrenFirstTraverse>
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class RecursiveDirectoryIterator
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/// The RecursiveDirectoryIterator class is used to enumerate
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/// all files in a directory and its subdirectories.
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///
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/// RecursiveDirectoryIterator has some limitations:
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/// * only forward iteration (++) is supported
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/// * an iterator copied from another one will always
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/// point to the same file as the original iterator,
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/// even is the original iterator has been advanced
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/// (all copies of an iterator share their state with
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/// the original iterator)
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///
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/// The class can follow different traversal strategies:
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/// * depth-first strategy;
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/// * siblings-first strategy.
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/// The stategies are set by template parameter.
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/// There are two corresponding typedefs:
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/// * SimpleRecursiveDirectoryIterator;
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/// * SiblingsFirstRecursiveDirectoryIterator.
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///
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/// The depth of traversal can be limited by constructor
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/// parameter maxDepth (which sets the infinite depth by default).
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{
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public:
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typedef RecursiveDirectoryIterator<TTravStr> MyType;
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enum
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{
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D_INFINITE = 0
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};
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/// Constant for infinite traverse depth.
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RecursiveDirectoryIterator()
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/// Creates the end iterator.
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: _pImpl(0)
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{
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}
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RecursiveDirectoryIterator(const std::string& path, UInt16 maxDepth = D_INFINITE);
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/// Creates a recursive directory iterator for the given path.
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RecursiveDirectoryIterator(const MyType& iterator)
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/// Creates a copy of another recursive directory iterator.
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: _pImpl(iterator._pImpl), _path(iterator._path), _file(iterator._file)
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{
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}
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RecursiveDirectoryIterator(const DirectoryIterator& iterator, UInt16 maxDepth = D_INFINITE)
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/// Creates a recursive directory iterator for the path of
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/// non-recursive directory iterator.
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: _pImpl(new ImplType(iterator->path(), maxDepth)), _path(Path(_pImpl->get())), _file(_path)
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{
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}
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RecursiveDirectoryIterator(const File& file, UInt16 maxDepth = D_INFINITE)
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/// Creates a recursive directory iterator for the given path.
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: _pImpl(new ImplType(file.path(), maxDepth)), _path(Path(_pImpl->get())), _file(_path)
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{
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}
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RecursiveDirectoryIterator(const Path& path, UInt16 maxDepth = D_INFINITE)
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/// Creates a recursive directory iterator for the given path.
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: _pImpl(new ImplType(path.toString(), maxDepth)), _path(Path(_pImpl->get())), _file(_path)
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{
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}
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~RecursiveDirectoryIterator()
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/// Destroys the DirectoryIterator.
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{
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if (_pImpl)
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_pImpl->release();
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}
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const std::string& name() const
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/// Returns the current filename.
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{
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return _path.getFileName();
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}
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const Poco::Path& path() const
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/// Returns the current path.
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{
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return _path;
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}
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UInt16 depth() const
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/// Depth of recursion (counting from 1).
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{
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return _pImpl->depth();
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}
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UInt16 maxDepth() const
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/// Max depth of recursion (counting from 1).
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{
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return _pImpl->maxDepth();
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}
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MyType& operator =(const MyType& it)
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{
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if (_pImpl)
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_pImpl->release();
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_pImpl = it._pImpl;
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if (_pImpl)
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{
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_pImpl->duplicate();
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_path = it._path;
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_file = _path;
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}
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return *this;
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}
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MyType& operator =(const File& file)
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{
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if (_pImpl)
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_pImpl->release();
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_pImpl = new ImplType(file.path());
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_path = Path(_pImpl->get());
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_file = _path;
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return *this;
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}
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MyType& operator =(const Path& path)
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{
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if (_pImpl)
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_pImpl->release();
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_pImpl = new ImplType(path.toString());
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_path = Path(_pImpl->get());
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_file = _path;
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return *this;
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}
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MyType& operator =(const std::string& path)
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{
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if (_pImpl)
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_pImpl->release();
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_pImpl = new ImplType(path);
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_path = Path(_pImpl->get());
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_file = _path;
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return *this;
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}
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MyType& operator ++()
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{
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if (_pImpl)
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{
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_path = Path(_pImpl->next());
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_file = _path;
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}
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return *this;
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}
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const File& operator *() const
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{
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return _file;
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}
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File& operator *()
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{
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return _file;
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}
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const File* operator ->() const
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{
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return &_file;
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}
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File* operator ->()
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{
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return &_file;
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}
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template<class T1, class T2>
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friend inline bool operator ==(const RecursiveDirectoryIterator<T1>& a, const RecursiveDirectoryIterator<T2>& b);
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template<class T1, class T2>
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friend inline bool operator !=(const RecursiveDirectoryIterator<T1>& a, const RecursiveDirectoryIterator<T2>& b);
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private:
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typedef RecursiveDirectoryIteratorImpl<TTravStr> ImplType;
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ImplType* _pImpl;
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Path _path;
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File _file;
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};
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//
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// friend comparsion operators
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//
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template<class T1, class T2>
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inline bool operator ==(const RecursiveDirectoryIterator<T1>& a, const RecursiveDirectoryIterator<T2>& b)
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{
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return a.path().toString() == b.path().toString();;
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}
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template<class T1, class T2>
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inline bool operator !=(const RecursiveDirectoryIterator<T1>& a, const RecursiveDirectoryIterator<T2>& b)
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{
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return a.path().toString() != b.path().toString();;
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}
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//
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// typedefs
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//
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typedef RecursiveDirectoryIterator<ChildrenFirstTraverse> SimpleRecursiveDirectoryIterator;
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typedef RecursiveDirectoryIterator<SiblingsFirstTraverse> SiblingsFirstRecursiveDirectoryIterator;
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} // namespace Poco
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#endif // Foundation_RecursiveDirectoryIterator_INCLUDE
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