Imported from /home/lorry/working-area/delta_php2/php-5.4.13.tar.bz2.HEADphp-5.4.13master

1 files changed, 96 insertions, 0 deletions

diff --git a/ext/spl/examples/dbareader.inc b/ext/spl/examples/dbareader.inc
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+<?php
+
+/** @file dbareader.inc
+ * @ingroup Examples
+ * @brief class DbaReader
+ * @author  Marcus Boerger
+ * @date    2003 - 2005
+ *
+ * SPL - Standard PHP Library
+ */
+
+/** @ingroup Examples
+ * @brief   This implements a DBA Iterator.
+ * @author  Marcus Boerger
+ * @version 1.0
+ */
+class DbaReader implements Iterator
+{
+
+	protected $db = NULL;
+	private $key = false;
+	private $val = false;
+
+	/**
+	 * Open database $file with $handler in read only mode.
+	 *
+	 * @param file    Database file to open.
+	 * @param handler Handler to use for database access.
+	 */
+	function __construct($file, $handler) {
+		if (!$this->db = dba_open($file, 'r', $handler)) {
+		    throw new exception('Could not open file ' . $file);
+		}
+	}
+	
+	/**
+	 * Close database.
+	 */
+	function __destruct() {
+		dba_close($this->db);
+	}
+
+	/**
+	 * Rewind to first element.
+	 */
+	function rewind() {
+		$this->key = dba_firstkey($this->db);
+		$this->fetch_data();
+	}
+
+	/**
+	 * Move to next element.
+	 *
+	 * @return void
+	 */
+	function next() {
+		$this->key = dba_nextkey($this->db);
+		$this->fetch_data();
+	}
+
+    /**
+     * Fetches the current data if $key is valid
+     */	
+	private function fetch_data() {
+		if ($this->key !== false) {
+			$this->val = dba_fetch($this->key, $this->db);
+		}
+	}
+
+	/**
+	 * @return Current data.
+	 */
+	function current() {
+		return $this->val;
+	}
+
+	/**
+	 * @return Whether more elements are available.
+	 */
+	function valid() {
+		if ($this->db && $this->key !== false) {
+			return true;
+		} else {
+			return false;
+		}
+	}
+
+	/**
+	 * @return Current key.
+	 */
+	function key() {
+		return $this->key;
+	}
+}
+
+?>
\ No newline at end of file