Initial commit

src/Metadata/HashTable.php

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+<?php
+/**
+ * Copyright (c) 2016, Rogiel Sulzbach
+ * 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.
+ *
+ * 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 HOLDER 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.
+ */
+
+namespace Rogiel\MPQ\Metadata;
+
+class HashTable {
+
+	private $hashes;
+	private $index;
+
+	// -----------------------------------------------------------------------------------------------------------------
+
+	public function __construct($hashes) {
+		$this->hashes = $hashes;
+
+		// index
+		foreach($this->hashes as $hash) {
+			/** @var $hash Hash */
+			$this->index[$hash->getName1()][$hash->getName2()] = $hash;
+		}
+	}
+
+	// -----------------------------------------------------------------------------------------------------------------
+
+	public function findHashByHash($hashA, $hashB) {
+		if(isset($this->index[$hashA][$hashB])) {
+			return $this->index[$hashA][$hashB];
+		}
+		return NULL;
+	}
+
+	/**
+	 * @return mixed
+	 */
+	public function getHashes() {
+		return $this->hashes;
+	}
+
+}