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93 lines
2.0 KiB
C++
93 lines
2.0 KiB
C++
//
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// RecursiveDirectoryIteratorStategies.h
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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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// Definitions of the RecursiveDirectoryIterator stategy classes.
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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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// SPDX-License-Identifier: BSL-1.0
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//
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#ifndef Foundation_RecursiveDirectoryIteratorStrategy_INCLUDED
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#define Foundation_RecursiveDirectoryIteratorStrategy_INCLUDED
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#include "Poco/Foundation.h"
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#include "Poco/DirectoryIterator.h"
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#include <stack>
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#include <queue>
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#include <functional>
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namespace Poco {
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class Foundation_API TraverseBase
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{
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public:
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using Stack = std::stack<DirectoryIterator>;
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using DepthFun = std::function<UInt16(const Stack&)>;
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enum
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{
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D_INFINITE = 0 /// Special value for infinite traverse depth.
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};
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TraverseBase(DepthFun depthDeterminer, UInt16 maxDepth = D_INFINITE);
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protected:
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bool isFiniteDepth();
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bool isDirectory(Poco::File& file);
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DepthFun _depthDeterminer;
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UInt16 _maxDepth;
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DirectoryIterator _itEnd;
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private:
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TraverseBase();
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TraverseBase(const TraverseBase&);
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TraverseBase& operator=(const TraverseBase&);
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};
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class Foundation_API ChildrenFirstTraverse: public TraverseBase
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{
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public:
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ChildrenFirstTraverse(DepthFun depthDeterminer, UInt16 maxDepth = D_INFINITE);
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const std::string next(Stack* itStack, bool* isFinished);
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private:
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ChildrenFirstTraverse();
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ChildrenFirstTraverse(const ChildrenFirstTraverse&);
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ChildrenFirstTraverse& operator=(const ChildrenFirstTraverse&);
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};
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class Foundation_API SiblingsFirstTraverse: public TraverseBase
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{
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public:
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SiblingsFirstTraverse(DepthFun depthDeterminer, UInt16 maxDepth = D_INFINITE);
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const std::string next(Stack* itStack, bool* isFinished);
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private:
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SiblingsFirstTraverse();
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SiblingsFirstTraverse(const SiblingsFirstTraverse&);
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SiblingsFirstTraverse& operator=(const SiblingsFirstTraverse&);
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std::stack<std::queue<std::string>> _dirsStack;
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};
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} // namespace Poco
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#endif // Foundation_RecursiveDirectoryIteratorStrategy_INCLUDED
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