152 lines
3.7 KiB
PHP
152 lines
3.7 KiB
PHP
<?php
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/*
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* $Id: DataStore.php 905 2010-10-05 16:28:03Z mrook $
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This software consists of voluntary contributions made by many individuals
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* and is licensed under the LGPL. For more information please see
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* <http://phing.info>.
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*/
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require_once 'phing/system/io/PhingFile.php';
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require_once 'phing/system/io/FileWriter.php';
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/**
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* An abstract representation of file and directory pathnames.
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*
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* @package phing.util
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* @author Michiel Rook <mrook@php.net>
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* @version $Revision: 905 $
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*/
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class DataStore
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{
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private $data = array();
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private $file = null;
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/**
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* Constructs a new data store
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*
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* @param PhingFile $file object pointing to the data store on disk
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*/
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function __construct(PhingFile $file)
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{
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$this->file = $file;
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if ($this->file->exists())
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{
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$this->read();
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}
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}
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/**
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* Destructor
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*/
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function __destruct()
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{
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$this->commit();
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}
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/**
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* Retrieves a value from the data store
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*
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* @param string $key the key
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*
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* @return mixed the value
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*/
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public function get($key)
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{
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if (!isset($this->data[$key]))
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{
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return null;
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}
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else
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{
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return $this->data[$key];
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}
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}
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/**
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* Adds a value to the data store
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*
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* @param string $key the key
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* @param mixed $value the value
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* @param boolean $autocommit whether to auto-commit (write)
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* the data store to disk
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*
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* @return none
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*/
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public function put($key, $value, $autocommit = false)
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{
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$this->data[$key] = $value;
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if ($autocommit)
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{
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$this->commit();
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}
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}
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/**
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* Commits data store to disk
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*
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* @return none
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*/
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public function commit()
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{
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$this->write();
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}
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/**
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* Internal function to read data store from file
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*
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* @return none
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*/
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private function read()
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{
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if (!$this->file->canRead())
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{
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throw new BuildException("Can't read data store from '" .
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$file->getPath() . "'");
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}
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else
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{
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$serializedData = $this->file->contents();
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$this->data = unserialize($serializedData);
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}
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}
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/**
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* Internal function to write data store to file
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*
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* @return none
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*/
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private function write()
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{
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if (!$this->file->canWrite())
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{
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throw new BuildException("Can't write data store to '" .
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$file->getPath() . "'");
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}
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else
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{
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$serializedData = serialize($this->data);
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$writer = new FileWriter($this->file);
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$writer->write($serializedData);
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$writer->close();
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}
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}
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};
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