--- /dev/null
+<?php
+/*
+ * 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 MIT license. For more information, see
+ * <http://www.doctrine-project.org>.
+ */
+
+namespace Doctrine\Common\Reflection;
+
+/**
+ * Finds a class in a PSR-0 structure.
+ *
+ * @author Karoly Negyesi <karoly@negyesi.net>
+ */
+class Psr0FindFile implements ClassFinderInterface
+{
+ /**
+ * The PSR-0 prefixes.
+ *
+ * @var array
+ */
+ protected $prefixes;
+
+ /**
+ * @param array $prefixes An array of prefixes. Each key is a PHP namespace and each value is
+ * a list of directories.
+ */
+ public function __construct($prefixes)
+ {
+ $this->prefixes = $prefixes;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public function findFile($class)
+ {
+ $lastNsPos = strrpos($class, '\\');
+ if ('\\' == $class[0]) {
+ $class = substr($class, 1);
+ }
+
+ if (false !== $lastNsPos) {
+ // namespaced class name
+ $classPath = str_replace('\\', DIRECTORY_SEPARATOR, substr($class, 0, $lastNsPos)) . DIRECTORY_SEPARATOR;
+ $className = substr($class, $lastNsPos + 1);
+ } else {
+ // PEAR-like class name
+ $classPath = null;
+ $className = $class;
+ }
+
+ $classPath .= str_replace('_', DIRECTORY_SEPARATOR, $className) . '.php';
+
+ foreach ($this->prefixes as $prefix => $dirs) {
+ if (0 === strpos($class, $prefix)) {
+ foreach ($dirs as $dir) {
+ if (is_file($dir . DIRECTORY_SEPARATOR . $classPath)) {
+ return $dir . DIRECTORY_SEPARATOR . $classPath;
+ }
+ }
+ }
+ }
+
+ return null;
+ }
+}