Implements namespaces and spl autoloading

autoload.php

@@ -0,0 +1,67 @@
+<?php
+/*
+ * Copyright (c) 2014, Rogiel Sulzbach <rogiel@rogiel.com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by Rogiel Sulzbach.
+ * 4. Neither the name of the <organization> nor the
+ * names of its contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY ROGIEL SULZBACH ''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 ROGIEL SULZBACH 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.
+ */
+spl_autoload_register(
+	function ($class) {
+		// the package namespace
+		$ns = 'PreDB';
+		
+		// what prefixes should be recognized?
+		$prefixes = array(
+			"{$ns}\\" => array(
+				__DIR__ . '/src'
+			)
+		);
+		
+		// go through the prefixes
+		foreach ($prefixes as $prefix => $dirs) {
+			// does the requested class match the namespace prefix?
+			$prefix_len = strlen($prefix);
+			if (substr($class, 0, $prefix_len) !== $prefix) {
+				continue;
+			}
+			
+			// strip the prefix off the class
+			$class = substr($class, $prefix_len);
+			
+			// a partial filename
+			$part = str_replace('\\', DIRECTORY_SEPARATOR, $class) . '.php';
+			
+			// go through the directories to find classes
+			foreach ($dirs as $dir) {
+				$dir = str_replace('/', DIRECTORY_SEPARATOR, $dir);
+				$file = $dir . DIRECTORY_SEPARATOR . $part;
+				if (is_readable($file)) {
+					require $file;
+					return;
+				}
+			}
+		}
+	});