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154 lines
3.3 KiB
C++
154 lines
3.3 KiB
C++
//
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// PurgeStrategy.cpp
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//
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// $Id: //poco/1.4/Foundation/src/PurgeStrategy.cpp#1 $
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//
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// Library: Foundation
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// Package: Logging
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// Module: FileChannel
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//
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// Copyright (c) 2004-2006, 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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#include "Poco/PurgeStrategy.h"
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#include "Poco/Path.h"
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#include "Poco/DirectoryIterator.h"
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#include "Poco/Timestamp.h"
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namespace Poco {
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//
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// PurgeStrategy
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//
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PurgeStrategy::PurgeStrategy()
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{
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}
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PurgeStrategy::~PurgeStrategy()
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{
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}
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void PurgeStrategy::list(const std::string& path, std::vector<File>& files)
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{
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Path p(path);
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p.makeAbsolute();
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Path parent = p.parent();
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std::string baseName = p.getFileName();
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baseName.append(".");
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DirectoryIterator it(parent);
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DirectoryIterator end;
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while (it != end)
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{
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if (it.name().compare(0, baseName.size(), baseName) == 0)
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{
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files.push_back(*it);
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}
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++it;
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}
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}
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//
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// PurgeByAgeStrategy
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//
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PurgeByAgeStrategy::PurgeByAgeStrategy(const Timespan& age): _age(age)
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{
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}
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PurgeByAgeStrategy::~PurgeByAgeStrategy()
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{
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}
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void PurgeByAgeStrategy::purge(const std::string& path)
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{
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std::vector<File> files;
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list(path, files);
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for (std::vector<File>::iterator it = files.begin(); it != files.end(); ++it)
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{
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if (it->getLastModified().isElapsed(_age.totalMicroseconds()))
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{
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it->remove();
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}
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}
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}
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//
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// PurgeByCountStrategy
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//
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PurgeByCountStrategy::PurgeByCountStrategy(int count): _count(count)
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{
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poco_assert(count > 0);
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}
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PurgeByCountStrategy::~PurgeByCountStrategy()
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{
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}
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void PurgeByCountStrategy::purge(const std::string& path)
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{
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std::vector<File> files;
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list(path, files);
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while (files.size() > _count)
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{
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std::vector<File>::iterator it = files.begin();
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std::vector<File>::iterator purgeIt = it;
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Timestamp purgeTS = purgeIt->getLastModified();
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++it;
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while (it != files.end())
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{
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Timestamp md(it->getLastModified());
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if (md <= purgeTS)
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{
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purgeTS = md;
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purgeIt = it;
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}
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++it;
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}
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purgeIt->remove();
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files.erase(purgeIt);
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}
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}
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} // namespace Poco
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