danog/class-finder
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Dynamically discover the application root

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This commit is contained in:
Hayden Pierce 2018-07-14 08:41:26 -05:00
parent d5fb2dcee6
commit 0f952b48d1
1 changed files with 44 additions and 4 deletions
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48
src/ClassFinder.php
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@ -3,9 +3,36 @@ namespace HaydenPierce\ClassFinder;
class ClassFinder
{
//This value should be the directory that contains composer.json
const appRoot = __DIR__ . "/../../";
/**
* @throws \Exception
*/
private static function findAppRoot()
{
$workingDirectory = str_replace('\\', '/', __DIR__);
$directoryPathPieces = explode('/', $workingDirectory);
$appRoot = null;
do {
$path = implode('/', $directoryPathPieces) . '/composer.json';
if (file_exists($path)) {
$appRoot = implode('/', $directoryPathPieces);
} else {
array_pop($directoryPathPieces);
}
} while (is_null($appRoot) || count($directoryPathPieces) > 0);
if (is_null($appRoot)) {
throw new \Exception('Could not locate composer.json.');
} else {
return $appRoot;
}
}
/**
* @param $namespace
* @return array
* @throws \Exception
*/
public static function getClassesInNamespace($namespace)
{
$files = scandir(self::getNamespaceDirectory($namespace));
@ -19,9 +46,15 @@ class ClassFinder
});
}
/**
* @return array
* @throws \Exception
*/
private static function getDefinedNamespaces()
{
$composerJsonPath = self::appRoot . 'composer.json';
$appRoot = self::findAppRoot();
$composerJsonPath = $appRoot. 'composer.json';
$composerConfig = json_decode(file_get_contents($composerJsonPath));
//Apparently PHP doesn't like hyphens, so we use variable variables instead.
@ -29,8 +62,15 @@ class ClassFinder
return (array) $composerConfig->autoload->$psr4;
}
/**
* @param $namespace
* @return bool|string
* @throws \Exception
*/
private static function getNamespaceDirectory($namespace)
{
$appRoot = self::findAppRoot();
$composerNamespaces = self::getDefinedNamespaces();
$namespaceFragments = explode('\\', $namespace);
@ -40,7 +80,7 @@ class ClassFinder
$possibleNamespace = implode('\\', $namespaceFragments) . '\\';
if(array_key_exists($possibleNamespace, $composerNamespaces)){
return realpath(self::appRoot . $composerNamespaces[$possibleNamespace] . implode('/', $undefinedNamespaceFragments));
return realpath($appRoot . $composerNamespaces[$possibleNamespace] . implode('/', $undefinedNamespaceFragments));
}
$undefinedNamespaceFragments[] = array_pop($namespaceFragments);