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<?php
namespace Illuminate\Filesystem;
use Symfony\Component\Finder\Finder;
class ClassFinder
{
/**
* Find all the class and interface names in a given directory.
*
* @param string $directory
* @return array
*/
public function findClasses($directory)
{
$classes = [];
foreach (Finder::create()->in($directory)->name('*.php') as $file) {
$classes[] = $this->findClass($file->getRealPath());
}
return array_filter($classes);
}
/**
* Extract the class name from the file at the given path.
*
* @param string $path
* @return string|null
*/
public function findClass($path)
{
$namespace = null;
$tokens = token_get_all(file_get_contents($path));
foreach ($tokens as $key => $token) {
if ($this->tokenIsNamespace($token)) {
$namespace = $this->getNamespace($key + 2, $tokens);
} elseif ($this->tokenIsClassOrInterface($token)) {
return ltrim($namespace.'\\'.$this->getClass($key + 2, $tokens), '\\');
}
}
}
/**
* Find the namespace in the tokens starting at a given key.
*
* @param int $key
* @param array $tokens
* @return string|null
*/
protected function getNamespace($key, array $tokens)
{
$namespace = null;
$tokenCount = count($tokens);
for ($i = $key; $i < $tokenCount; $i++) {
if ($this->isPartOfNamespace($tokens[$i])) {
$namespace .= $tokens[$i][1];
} elseif ($tokens[$i] == ';') {
return $namespace;
}
}
}
/**
* Find the class in the tokens starting at a given key.
*
* @param int $key
* @param array $tokens
* @return string|null
*/
protected function getClass($key, array $tokens)
{
$class = null;
$tokenCount = count($tokens);
for ($i = $key; $i < $tokenCount; $i++) {
if ($this->isPartOfClass($tokens[$i])) {
$class .= $tokens[$i][1];
} elseif ($this->isWhitespace($tokens[$i])) {
return $class;
}
}
}
/**
* Determine if the given token is a namespace keyword.
*
* @param array|string $token
* @return bool
*/
protected function tokenIsNamespace($token)
{
return is_array($token) && $token[0] == T_NAMESPACE;
}
/**
* Determine if the given token is a class or interface keyword.
*
* @param array|string $token
* @return bool
*/
protected function tokenIsClassOrInterface($token)
{
return is_array($token) && ($token[0] == T_CLASS || $token[0] == T_INTERFACE);
}
/**
* Determine if the given token is part of the namespace.
*
* @param array|string $token
* @return bool
*/
protected function isPartOfNamespace($token)
{
return is_array($token) && ($token[0] == T_STRING || $token[0] == T_NS_SEPARATOR);
}
/**
* Determine if the given token is part of the class.
*
* @param array|string $token
* @return bool
*/
protected function isPartOfClass($token)
{
return is_array($token) && $token[0] == T_STRING;
}
/**
* Determine if the given token is whitespace.
*
* @param array|string $token
* @return bool
*/
protected function isWhitespace($token)
{
return is_array($token) && $token[0] == T_WHITESPACE;
}
}
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