--- /dev/null
+<?php
+
+/*
+ * This file is part of Psy Shell.
+ *
+ * (c) 2012-2018 Justin Hileman
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Psy;
+
+use Symfony\Component\Finder\Finder;
+
+/**
+ * A Psy Shell Phar compiler.
+ */
+class Compiler
+{
+ private $version;
+
+ /**
+ * Compiles psysh into a single phar file.
+ *
+ * @param string $pharFile The full path to the file to create
+ */
+ public function compile($pharFile = 'psysh.phar')
+ {
+ if (file_exists($pharFile)) {
+ unlink($pharFile);
+ }
+
+ $this->version = Shell::VERSION;
+
+ $phar = new \Phar($pharFile, 0, 'psysh.phar');
+ $phar->setSignatureAlgorithm(\Phar::SHA1);
+
+ $phar->startBuffering();
+
+ $finder = Finder::create()
+ ->files()
+ ->ignoreVCS(true)
+ ->name('*.php')
+ ->notName('Compiler.php')
+ ->in(__DIR__);
+
+ foreach ($finder as $file) {
+ $this->addFile($phar, $file);
+ }
+
+ $finder = Finder::create()
+ ->files()
+ ->ignoreVCS(true)
+ ->name('*.php')
+ ->exclude('Tests')
+ ->exclude('tests')
+ ->exclude('Test')
+ ->exclude('test')
+ ->in(dirname(__DIR__) . '/build-vendor');
+
+ foreach ($finder as $file) {
+ $this->addFile($phar, $file);
+ }
+
+ // Stubs
+ $phar->setStub($this->getStub());
+
+ $phar->stopBuffering();
+
+ unset($phar);
+ }
+
+ /**
+ * Add a file to the psysh Phar.
+ *
+ * @param \Phar $phar
+ * @param \SplFileInfo $file
+ * @param bool $strip (default: true)
+ */
+ private function addFile($phar, $file, $strip = true)
+ {
+ $path = str_replace(dirname(__DIR__) . DIRECTORY_SEPARATOR, '', $file->getRealPath());
+
+ $content = file_get_contents($file);
+ if ($strip) {
+ $content = $this->stripWhitespace($content);
+ } elseif ('LICENSE' === basename($file)) {
+ $content = "\n" . $content . "\n";
+ }
+
+ $phar->addFromString($path, $content);
+ }
+
+ /**
+ * Removes whitespace from a PHP source string while preserving line numbers.
+ *
+ * @param string $source A PHP string
+ *
+ * @return string The PHP string with the whitespace removed
+ */
+ private function stripWhitespace($source)
+ {
+ if (!function_exists('token_get_all')) {
+ return $source;
+ }
+
+ $output = '';
+ foreach (token_get_all($source) as $token) {
+ if (is_string($token)) {
+ $output .= $token;
+ } elseif (in_array($token[0], [T_COMMENT, T_DOC_COMMENT])) {
+ $output .= str_repeat("\n", substr_count($token[1], "\n"));
+ } elseif (T_WHITESPACE === $token[0]) {
+ // reduce wide spaces
+ $whitespace = preg_replace('{[ \t]+}', ' ', $token[1]);
+ // normalize newlines to \n
+ $whitespace = preg_replace('{(?:\r\n|\r|\n)}', "\n", $whitespace);
+ // trim leading spaces
+ $whitespace = preg_replace('{\n +}', "\n", $whitespace);
+ $output .= $whitespace;
+ } else {
+ $output .= $token[1];
+ }
+ }
+
+ return $output;
+ }
+
+ private static function getStubLicense()
+ {
+ $license = file_get_contents(dirname(__DIR__) . '/LICENSE');
+ $license = str_replace('The MIT License (MIT)', '', $license);
+ $license = str_replace("\n", "\n * ", trim($license));
+
+ return $license;
+ }
+
+ const STUB_AUTOLOAD = <<<'EOS'
+ Phar::mapPhar('psysh.phar');
+ require 'phar://psysh.phar/build-vendor/autoload.php';
+EOS;
+
+ /**
+ * Get a Phar stub for psysh.
+ *
+ * This is basically the psysh bin, with the autoload require statements swapped out.
+ *
+ * @return string
+ */
+ private function getStub()
+ {
+ $content = file_get_contents(dirname(__DIR__) . '/bin/psysh');
+ $content = preg_replace('{/\* <<<.*?>>> \*/}sm', self::STUB_AUTOLOAD, $content);
+ $content = preg_replace('/\\(c\\) .*?with this source code./sm', self::getStubLicense(), $content);
+
+ $content .= '__HALT_COMPILER();';
+
+ return $content;
+ }
+}