Analyse PSR-4 info from composer.json file - Close #51

Author: sandrokeil

composer.json

@@ -26,7 +26,8 @@
     },
     "require": {
         "php": "^7.3 || ^8.0",
-        "nikic/php-parser": "^4.2"
+        "nikic/php-parser": "^4.2",
+        "ext-json": "*"
     },
     "require-dev": {
         "laminas/laminas-filter": "^2.9",

src/Package/Psr4Info.php

@@ -10,8 +10,6 @@
 
 namespace OpenCodeModeling\CodeAst\Package;
 
-use Composer\Autoload\ClassLoader;
-
 final class Psr4Info implements ClassInfo
 {
     /**
@@ -172,30 +170,67 @@ private function normalizePath(string $path): string
     /**
      * Creates an instance of the class Psr4Info based on the Composer configuration.
      *
-     * @param ClassLoader $classLoader Composer ClassLoader instance
+     * @param string $basePath Usually the composer.json root folder
+     * @param string $composerFileContent Content of composer.json to detect registered namespaces
      * @param callable $filterDirectoryToNamespace Callable to filter a directory to a namespace
-     * @param callable $filterNamespaceToDirectory  Callable to filter a namespace to a directory
+     * @param callable $filterNamespaceToDirectory Callable to filter a namespace to a directory
      * @param string $exclude Specifies which path should be ignored
-     * @return array
+     * @return Psr4Info[]
+     * @throws \JsonException
      */
     public static function fromComposer(
-        ClassLoader $classLoader,
+        string $basePath,
+        string $composerFileContent,
         callable $filterDirectoryToNamespace,
         callable $filterNamespaceToDirectory,
         string $exclude = 'vendor' . DIRECTORY_SEPARATOR
     ): array {
         $namespaces = [];
 
-        foreach ($classLoader->getPrefixesPsr4() as $namespace => $paths) {
-            $realpath = \preg_replace('/^' . \addcslashes(\getcwd(), '/') . '\//', '', \realpath($paths[0]));
-            if (false !== \stripos($realpath, $exclude)) {
+        $composer = \json_decode($composerFileContent, true, 512, \JSON_BIGINT_AS_STRING | \JSON_THROW_ON_ERROR);
+
+        foreach ($composer['autoload']['psr-4'] ?? [] as $namespace => $paths) {
+            $namespaces[] = self::fromNamespace($basePath, $namespace, (array) $paths, $filterDirectoryToNamespace, $filterNamespaceToDirectory, $exclude);
+        }
+        foreach ($composer['autoload-dev']['psr-4'] ?? [] as $namespace => $paths) {
+            $namespaces[] = self::fromNamespace($basePath, $namespace, (array) $paths, $filterDirectoryToNamespace, $filterNamespaceToDirectory, $exclude);
+        }
+
+        return \array_merge(...$namespaces);
+    }
+
+    /**
+     * @param string $basePath Usually the composer.json root folder
+     * @param string $namespace
+     * @param array $paths
+     * @param callable $filterDirectoryToNamespace
+     * @param callable $filterNamespaceToDirectory
+     * @param string $exclude
+     * @return Psr4Info[]
+     */
+    public static function fromNamespace(
+        string $basePath,
+        string $namespace,
+        array $paths,
+        callable $filterDirectoryToNamespace,
+        callable $filterNamespaceToDirectory,
+        string $exclude = 'vendor' . DIRECTORY_SEPARATOR
+    ): array {
+        $classInfoList = [];
+
+        $basePath = \rtrim($basePath, '/') . DIRECTORY_SEPARATOR;
+
+        foreach ($paths as $path) {
+            $path = $basePath . $path;
+
+            if (false !== \stripos($path, $exclude)) {
                 continue;
             }
-            $classInfo = new self($realpath, $namespace, $filterDirectoryToNamespace, $filterNamespaceToDirectory);
+            $classInfo = new self($path, $namespace, $filterDirectoryToNamespace, $filterNamespaceToDirectory);
 
-            $namespaces[] = $classInfo;
+            $classInfoList[] = $classInfo;
         }
 
-        return $namespaces;
+        return $classInfoList;
     }
 }

tests/Package/Psr4InfoTest.php

@@ -17,6 +17,33 @@
 
 final class Psr4InfoTest extends TestCase
 {
+    /**
+     * @test
+     */
+    public function it_can_be_created_from_composer(): void
+    {
+        $psr4InfoList = Psr4Info::fromComposer(
+            '/service',
+            \file_get_contents(__DIR__ . DIRECTORY_SEPARATOR . '_files' . DIRECTORY_SEPARATOR . 'composer.json'),
+            $this->filterDirectoryToNamespace(),
+            $this->filterNamespaceToDirectory()
+        );
+
+        $this->assertCount(4, $psr4InfoList);
+
+        $this->assertSame('OpenCodeModeling\\CodeAst', $psr4InfoList[0]->getPackagePrefix());
+        $this->assertSame('/service/src', $psr4InfoList[0]->getSourceFolder());
+
+        $this->assertSame('Monolog', $psr4InfoList[1]->getPackagePrefix());
+        $this->assertSame('/service/src', $psr4InfoList[1]->getSourceFolder());
+
+        $this->assertSame('Monolog', $psr4InfoList[2]->getPackagePrefix());
+        $this->assertSame('/service/lib', $psr4InfoList[2]->getSourceFolder());
+
+        $this->assertSame('OpenCodeModelingTest\\CodeAst', $psr4InfoList[3]->getPackagePrefix());
+        $this->assertSame('/service/tests', $psr4InfoList[3]->getSourceFolder());
+    }
+
     /**
      * @test
      * @dataProvider providerForGetClassNamespace

tests/Package/_files/composer.json

@@ -0,0 +1,19 @@
+{
+    "autoload": {
+        "psr-0": {
+            "Monolog\\": "src/"
+        },
+        "psr-4": {
+            "OpenCodeModeling\\CodeAst\\": "src/",
+            "Monolog\\": [
+                "src/",
+                "lib/"
+            ]
+        }
+    },
+    "autoload-dev": {
+        "psr-4": {
+            "OpenCodeModelingTest\\CodeAst\\": "tests/"
+        }
+    }
+}