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lib/symfony/vendor/phing/system/io/Reader.php

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+<?php
+/*
+ *  $Id: Reader.php 3076 2006-12-18 08:52:12Z fabien $
+ *
+ * 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>.
+*/
+
+/**
+ * Abstract class for reading character streams.
+ * @author Hans Lellelid <hans@xmpl.org>
+ * @author Yannick Lecaillez <yl@seasonfive.com>
+ * @version $Revision: 1.5 $
+ * @package phing.system.io
+ */
+abstract class Reader {
+
+    /**
+     * Read data from source.
+     * If length is specified, then only that number of chars is read,
+     * otherwise stream is read until EOF.
+     * @param int $len
+     */
+    abstract public function read($len = null);
+            
+    /**
+     * Close stream.
+     */
+    abstract public function close();
+    
+    /**
+     * Open stream for reading.
+     */
+    abstract public function open();
+    
+    /**
+     * Returns the filename, url, etc. that is being read from.
+     * This is critical for, e.g., ExpatParser's ability to know
+     * the filename that is throwing an ExpatParserException, etc.
+     * @return string
+     */
+    abstract function getResource();
+
+    /**
+     * Move stream position relative to current pos.
+     * @param int $n
+     */
+    public function skip($n) {}
+    
+    /**
+     * Reset the current position in stream to beginning or last mark (if supported).
+     */    
+    public function reset() {}
+        
+    /**
+     * If supported, places a "marker" (like a bookmark) at current stream position.
+     * A subsequent call to reset() will move stream position back
+     * to last marker (if supported).
+     */    
+    public function mark() {}
+
+    /**
+     * Whether marking is supported.
+     * @return boolean
+     */
+    public function markSupported() {}
+    
+    /**
+     * Is stream ready for reading.
+     * @return boolean
+     */
+    public function ready() {}
+
+}
+?>