Load from the composer autoload

src/ClassNameMapper.php

@@ -90,6 +90,23 @@ public static function createFromComposerFile($composerJsonPath = null, $rootPat
  return $classNameMapper;
  }
 
+ /**
+ * @param string|null $composerAutoloadPath
+ * @return ClassNameMapper
+ */
+ public static function createFromComposerAutoload($composerAutoloadPath = null)
+ {
+ $classNameMapper = new ClassNameMapper();
+
+ if ($composerAutoloadPath === null) {
+ $composerAutoloadPath = __DIR__ . '/../../../autoload.php';
+ }
+
+ $classNameMapper->loadComposerAutoload($composerAutoloadPath);
+
+ return $classNameMapper;
+ }
+
  /**
  *
  * @param string $composerJsonPath Path to the composer file
@@ -121,6 +138,7 @@ public function loadComposerFile($composerJsonPath, $rootPath = null, $useAutolo
 
  if (isset($composer["autoload"]["psr-4"])) {
  $psr4 = $composer["autoload"]["psr-4"];
+
  foreach ($psr4 as $namespace => $paths) {
  if ($relativePath != null) {
  if (!is_array($paths)) {
@@ -169,6 +187,27 @@ public function loadComposerFile($composerJsonPath, $rootPath = null, $useAutolo
  return $this;
  }
 
+ /**
+ * @param string $composerAutoloadPath
+ * @return self
+ */
+ public function loadComposerAutoload($composerAutoloadPath)
+ {
+ if (file_exists($composerAutoloadPath)) {
+ $loader = require $composerAutoloadPath;
+
+ foreach ($loader->getPrefixes() as $namespace => $paths) {
+ $this->registerPsr0Namespace($namespace, $paths);
+ }
+
+ foreach ($loader->getPrefixesPsr4() as $namespace => $paths) {
+ $this->registerPsr4Namespace($namespace, $paths);
+ }
+ }
+
+ return $this;
+ }
+
  /**
  * Given an existing path, convert it to a path relative to a given starting path.
  * Shamelessly borrowed to Symfony :). Thanks guys.
@@ -325,4 +364,4 @@ private static function unfactorizeAutoload(array $autoload) {
  private static function normalizeDirectory($dir) {
  return $dir === '' ? '' : rtrim($dir, '\\/').'/';
  }
-}
+}

tests/ClassNameMapperTest.php

@@ -14,6 +14,15 @@ public function testGetPossibleFiles() {
 
  $this->assertEquals([ 'src/Foo/Bar.php', 'src2/Bar.php' ], $possibleFiles);
 
+ //From autoloader instead of composer.json
+ $mapper = ClassNameMapper::createFromComposerAutoload(__DIR__ . '/Fixtures/test_autoload.php');
+ $possibleFiles = $mapper->getPossibleFileNames('Mouf\\Composer\\ClassNameMapper');
+
+ $this->assertEquals([
+ 'src/ClassNameMapper.php'
+ ],
+ $possibleFiles
+ );
  }
 
  public function testUseAutoloadDev() {

tests/Fixtures/test_autoload.php

@@ -0,0 +1,8 @@
+<?php
+
+use Composer\Autoload\ClassLoader;
+
+$classLoader = new ClassLoader();
+$classLoader->setPsr4('Mouf\\Composer\\', ['src/']);
+
+return $classLoader;