1 files changed, 151 insertions, 0 deletions
diff --git a/buildscripts/phing/classes/phing/util/DataStore.php b/buildscripts/phing/classes/phing/util/DataStore.php
new file mode 100755
index 00000000..af696697
--- /dev/null
+++ b/buildscripts/phing/classes/phing/util/DataStore.php
@@ -0,0 +1,151 @@
+<?php
+
+/*
+ *  $Id: 77f24d8b9d8082b4c23cb4cd5d23a06a3be88e2d $
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * This software consists of voluntary contributions made by many individuals
+ * and is licensed under the LGPL. For more information please see
+ * <http://phing.info>.
+ */
+ 
+require_once 'phing/system/io/PhingFile.php';
+require_once 'phing/system/io/FileWriter.php';
+
+/**
+ * An abstract representation of file and directory pathnames.
+ *
+ * @package phing.util
+ * @author  Michiel Rook <mrook@php.net>
+ * @version $Id$
+ */
+class DataStore
+{
+    private $data = array();    
+    private $file = null;
+    
+    /**
+     * Constructs a new data store
+     *
+     * @param PhingFile $file object pointing to the data store on disk
+     */
+    function __construct(PhingFile $file)
+    {
+        $this->file = $file;
+        
+        if ($this->file->exists())
+        {
+            $this->read();
+        }
+    }
+    
+    /**
+     * Destructor
+     */
+    function __destruct()
+    {
+        $this->commit();
+    }
+    
+    /**
+     * Retrieves a value from the data store
+     *
+     * @param string $key the key
+     *
+     * @return mixed the value
+     */
+    public function get($key)
+    {
+        if (!isset($this->data[$key]))
+        {
+            return null;
+        }
+        else
+        {
+            return $this->data[$key];
+        }
+    }
+    
+    /**
+     * Adds a value to the data store
+     *
+     * @param string  $key        the key
+     * @param mixed   $value      the value
+     * @param boolean $autocommit whether to auto-commit (write) 
+     *                            the data store to disk
+     *
+     * @return none
+     */
+    public function put($key, $value, $autocommit = false)
+    {
+        $this->data[$key] = $value;
+        
+        if ($autocommit)
+        {
+            $this->commit();
+        }
+    }
+    
+    /**
+     * Commits data store to disk
+     *
+     * @return none
+     */
+    public function commit()
+    {
+        $this->write();
+    }
+    
+    /**
+     * Internal function to read data store from file
+     *
+     * @return none
+     */
+    private function read()
+    {
+        if (!$this->file->canRead())
+        {
+            throw new BuildException("Can't read data store from '" . 
+                $file->getPath() . "'");
+        }
+        else
+        {
+            $serializedData = $this->file->contents();
+            
+            $this->data = unserialize($serializedData);
+        }
+    }
+
+    /**
+     * Internal function to write data store to file
+     *
+     * @return none
+     */
+    private function write()
+    {
+        if (!$this->file->canWrite())
+        {
+            throw new BuildException("Can't write data store to '" . 
+                $file->getPath() . "'");
+        }
+        else
+        {
+            $serializedData = serialize($this->data);
+
+            $writer = new FileWriter($this->file);
+            $writer->write($serializedData);
+            $writer->close();
+        }
+    }    
+};