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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,141 @@ | ||
| <?php | ||
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| namespace Riimu\Kit\ClassLoader; | ||
|
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| /** | ||
| * Class for finding class files. | ||
| * @author Riikka Kalliomäki <riikka.kalliomaki@gmail.com> | ||
| * @copyright Copyright (c) 2015, Riikka Kalliomäki | ||
| * @license http://opensource.org/licenses/mit-license.php MIT License | ||
| */ | ||
| class FileFinder | ||
| { | ||
| /** @var string[] List of file extensions used to find files */ | ||
| private $fileExtensions; | ||
|
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| /** | ||
| * Creates a new PathFinder instance. | ||
| */ | ||
| public function __construct() | ||
| { | ||
| $this->fileExtensions = ['.php']; | ||
| } | ||
|
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| /** | ||
| * Sets list of dot included file extensions to use for finding files. | ||
| * | ||
| * If no list of extensions is provided, the extension array defaults to | ||
| * just '.php'. | ||
| * | ||
| * @param string[] $extensions Array of dot included file extensions to use | ||
| */ | ||
| public function setFileExtensions(array $extensions) | ||
| { | ||
| $this->fileExtensions = $extensions; | ||
| } | ||
|
|
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| /** | ||
| * Attempts to find a file for the given class from given paths. | ||
| * | ||
| * Both lists of paths must be given as arrays with keys indicating the | ||
| * namespace. Empty string can be used for the paths that apply to all | ||
| * Classes. Each value must be an array of paths. | ||
| * | ||
| * @param string $class Full name of the class | ||
| * @param array $prefixPaths List of paths used for PSR-4 file search | ||
| * @param array $basePaths List of paths used for PSR-0 file search | ||
| * @param boolean $useIncludePath Whether to use paths in include_path for PSR-0 search or not | ||
| * @return string|false Path to the class file or false if not found | ||
| */ | ||
| public function findFile($class, array $prefixPaths, array $basePaths = [], $useIncludePath = false) | ||
| { | ||
| if ($file = $this->searchNamespaces($prefixPaths, $class, true)) { | ||
| return $file; | ||
| } | ||
|
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| $class = preg_replace('/_(?=[^\\\\]*$)/', '\\', $class); | ||
|
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| if ($file = $this->searchNamespaces($basePaths, $class, false)) { | ||
| return $file; | ||
| } elseif ($useIncludePath) { | ||
| return $this->searchDirectories(explode(PATH_SEPARATOR, get_include_path()), $class); | ||
| } | ||
|
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| return false; | ||
| } | ||
|
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| /** | ||
| * Searches for the class file from the namespaces that apply to the class. | ||
| * @param array $paths All the namespace specific paths | ||
| * @param string $class Canonized full class name | ||
| * @param boolean $truncate True to remove the namespace from the path | ||
| * @return string|false Path to the class file or false if not found | ||
| */ | ||
| private function searchNamespaces($paths, $class, $truncate) | ||
| { | ||
| foreach ($paths as $namespace => $directories) { | ||
| $canonized = $this->canonizeClass($namespace, $class, $truncate); | ||
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| if ($canonized && $file = $this->searchDirectories($directories, $canonized)) { | ||
| return $file; | ||
| } | ||
| } | ||
|
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| return false; | ||
| } | ||
|
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| /** | ||
| * Matches the class against the namespace and canonizes the name as needed. | ||
| * @param string $namespace Namespace to match against | ||
| * @param string $class Full name of the class | ||
| * @param boolean $truncate Whether to remove the namespace from the class | ||
| * @return string|false Canonized class name or false if it does not match the namespace | ||
| */ | ||
| private function canonizeClass($namespace, $class, $truncate) | ||
| { | ||
| $class = ltrim($class, '\\'); | ||
| $namespace = $namespace == '' ? '' : trim($namespace, '\\') . '\\'; | ||
|
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| if (strncmp($class, $namespace, strlen($namespace)) !== 0) { | ||
| return false; | ||
| } | ||
|
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| return $truncate ? substr($class, strlen($namespace)) : $class; | ||
| } | ||
|
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| /** | ||
| * Searches for the class file in the list of directories. | ||
| * @param string[] $directories List of directory paths where to look for the class | ||
| * @param string $class Part of the class name that translates to the file name | ||
| * @return string|false Path to the class file or false if not found | ||
| */ | ||
| private function searchDirectories(array $directories, $class) | ||
| { | ||
| foreach ($directories as $directory) { | ||
| $directory = trim($directory); | ||
| $path = preg_replace('/[\\/\\\\]+/', DIRECTORY_SEPARATOR, $directory . '/' . $class); | ||
|
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| if ($directory && $file = $this->searchExtensions($path)) { | ||
| return $file; | ||
| } | ||
| } | ||
|
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| return false; | ||
| } | ||
|
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| /** | ||
| * Searches for the class file using known file extensions. | ||
| * @param string $path Path to the class file without the file extension | ||
| * @return string|false Path to the class file or false if not found | ||
| */ | ||
| private function searchExtensions($path) | ||
| { | ||
| foreach ($this->fileExtensions as $ext) { | ||
| if (file_exists($path . $ext)) { | ||
| return $path . $ext; | ||
| } | ||
| } | ||
|
|
||
| return false; | ||
| } | ||
| } |
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