www.gusucode.com > KPPW众包威客PHP开源建站系统 v3.0源码程序 > KPPW/vendor/classpreloader/classpreloader/src/ClassPreloader.php
<?php /* * This file is part of Class Preloader. * * (c) Graham Campbell <graham@alt-three.com> * (c) Michael Dowling <mtdowling@gmail.com> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace ClassPreloader; use ClassPreloader\Parser\NodeTraverser; use PhpParser\Node\Stmt\Namespace_ as NamespaceNode; use PhpParser\Parser; use PhpParser\PrettyPrinter\Standard as PrettyPrinter; use RuntimeException; /** * This is the class preloader class. * * This is the main point of entry for interacting with this package. */ class ClassPreloader { /** * The printer. * * @var \PhpParser\PrettyPrinter\Standard */ protected $printer; /** * The parser. * * @var \PhpParser\Parser */ protected $parser; /** * The traverser. * * @var \ClassPreloader\Parser\NodeTraverser */ protected $traverser; /** * Create a new class preloader instance. * * @param \PhpParser\PrettyPrinter\Standard $printer * @param \PhpParser\Parser $parser * @param \ClassPreloader\Parser\NodeTraverser $traverser * * @return void */ public function __construct(PrettyPrinter $printer, Parser $parser, NodeTraverser $traverser) { $this->printer = $printer; $this->parser = $parser; $this->traverser = $traverser; } /** * Prepare the output file and directory. * * @param string $output * @param bool $strict * * @throws \RuntimeException * * @return resource */ public function prepareOutput($output, $strict = false) { if ($strict && version_compare(PHP_VERSION, '7') < 1) { throw new RuntimeException('Strict mode requires PHP 7 or greater.'); } $dir = dirname($output); if (!is_dir($dir) && !mkdir($dir, 0777, true)) { throw new RuntimeException("Unable to create directory $dir."); } $handle = fopen($output, 'w'); if (!$handle) { throw new RuntimeException("Unable to open $output for writing."); } if ($strict) { fwrite($handle, "<?php declare(strict_types=1);\n"); } else { fwrite($handle, "<?php\n"); } return $handle; } /** * Get a pretty printed string of code from a file while applying visitors. * * @param string $file * * @throws \RuntimeException * * @return string */ public function getCode($file, $comments = true) { if (!is_string($file) || empty($file)) { throw new RuntimeException('Invalid filename provided.'); } if (!is_readable($file)) { throw new RuntimeException("Cannot open $file for reading."); } if ($comments) { $content = file_get_contents($file); } else { $content = php_strip_whitespace($file); } $parsed = $this->parser->parse($content); $stmts = $this->traverser->traverseFile($parsed, $file); $pretty = $this->printer->prettyPrint($stmts); if (substr($pretty, 30) === '<?php declare(strict_types=1);' || substr($pretty, 30) === "<?php\ndeclare(strict_types=1);") { $pretty = substr($pretty, 32); } elseif (substr($pretty, 31) === "<?php\r\ndeclare(strict_types=1);") { $pretty = substr($pretty, 33); } elseif (substr($pretty, 5) === '<?php') { $pretty = substr($pretty, 7); } return $this->getCodeWrappedIntoNamespace($parsed, $pretty); } /** * Wrap the code into a namespace. * * @param array $parsed * @param string $pretty * * @return string */ protected function getCodeWrappedIntoNamespace(array $parsed, $pretty) { if ($this->parsedCodeHasNamespaces($parsed)) { $pretty = preg_replace('/^\s*(namespace.*);/i', '${1} {', $pretty, 1)."\n}\n"; } else { $pretty = sprintf("namespace {\n%s\n}\n", $pretty); } return preg_replace('/(?<!.)[\r\n]+/', '', $pretty); } /** * Check parsed code for having namespaces. * * @param array $parsed * * @return bool */ protected function parsedCodeHasNamespaces(array $parsed) { // Namespaces can only be on first level in the code, // so we make only check on it. $node = array_filter( $parsed, function ($value) { return $value instanceof NamespaceNode; } ); return !empty($node); } }