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e1018881ba
* In the implementation for the *Traverse strategies the next method performs an unguarded list directory. If the directory is not accessible an unrecoverable error is raised thus ruining the walk. This changeset adopts and adapts the error handling protocol as defined in Python's os.walk function where errors from listdir are ignored or are reported to an optional on error callback function. * Expand DirectoryIteratorsTest testsuite to confirm the hardened iterator behaviour over unreadable directories. * Expand DirectoryIteratorsTest testsuite to confirm the hardened iterator behaviour over unreadable directories. Correct bad formatting * fix clang compile
97 lines
2.1 KiB
C++
97 lines
2.1 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 "Poco/BasicEvent.h"
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#include "Poco/EventArgs.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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typedef std::stack<DirectoryIterator> Stack;
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typedef std::pointer_to_unary_function<const Stack&, UInt16> DepthFunPtr;
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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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Poco::BasicEvent<const std::string> traverseError;
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TraverseBase(DepthFunPtr 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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DepthFunPtr _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(DepthFunPtr 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(DepthFunPtr 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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