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<?php
/*
* This file is part of Psy Shell.
*
* (c) 2012-2015 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
{
/**
* 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();
$finder = Finder::create()
->files()
->ignoreVCS(true)
->name('*.php')
->notName('Compiler.php')
->notName('Autoloader.php')
->in(__DIR__ . '/..');
foreach ($finder as $file) {
$this->addFile($phar, $file);
}
$finder = Finder::create()
->files()
->ignoreVCS(true)
->name('*.php')
->exclude('Tests')
->in(__DIR__ . '/../../build-vendor');
foreach ($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(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], array(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(__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(__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;
}
}
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