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<?php declare(strict_types=1);
/*
* This file is part of Composer.
*
* (c) Nils Adermann <naderman@naderman.de>
* Jordi Boggiano <j.boggiano@seld.be>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Composer;
use Composer\Json\JsonFile;
use Composer\CaBundle\CaBundle;
use Composer\Pcre\Preg;
use Symfony\Component\Finder\Finder;
use Symfony\Component\Process\Process;
use Seld\PharUtils\Timestamps;
use Seld\PharUtils\Linter;
/**
* The Compiler class compiles composer into a phar
*
* @author Fabien Potencier <fabien@symfony.com>
* @author Jordi Boggiano <j.boggiano@seld.be>
*/
class Compiler
{
/** @var string */
private $version;
/** @var string */
private $branchAliasVersion = '';
/** @var \DateTime */
private $versionDate;
/**
* Compiles composer into a single phar file
*
* @param string $pharFile The full path to the file to create
*
* @throws \RuntimeException
*/
public function compile(string $pharFile = 'composer.phar'): void
{
if (file_exists($pharFile)) {
unlink($pharFile);
}
$process = new Process(['git', 'log', '--pretty=%H', '-n1', 'HEAD'], __DIR__);
if ($process->run() !== 0) {
throw new \RuntimeException('Can\'t run git log. You must ensure to run compile from composer git repository clone and that git binary is available.');
}
$this->version = trim($process->getOutput());
$process = new Process(['git', 'log', '-n1', '--pretty=%ci', 'HEAD'], __DIR__);
if ($process->run() !== 0) {
throw new \RuntimeException('Can\'t run git log. You must ensure to run compile from composer git repository clone and that git binary is available.');
}
$this->versionDate = new \DateTime(trim($process->getOutput()));
$this->versionDate->setTimezone(new \DateTimeZone('UTC'));
$process = new Process(['git', 'describe', '--tags', '--exact-match', 'HEAD'], __DIR__);
if ($process->run() === 0) {
$this->version = trim($process->getOutput());
} else {
// get branch-alias defined in composer.json for dev-main (if any)
$localConfig = __DIR__.'/../../composer.json';
$file = new JsonFile($localConfig);
$localConfig = $file->read();
if (isset($localConfig['extra']['branch-alias']['dev-main'])) {
$this->branchAliasVersion = $localConfig['extra']['branch-alias']['dev-main'];
}
}
$phar = new \Phar($pharFile, 0, 'composer.phar');
$phar->setSignatureAlgorithm(\Phar::SHA512);
$phar->startBuffering();
$finderSort = static function ($a, $b): int {
return strcmp(strtr($a->getRealPath(), '\\', '/'), strtr($b->getRealPath(), '\\', '/'));
};
// Add Composer sources
$finder = new Finder();
$finder->files()
->ignoreVCS(true)
->name('*.php')
->notName('Compiler.php')
->notName('ClassLoader.php')
->notName('InstalledVersions.php')
->in(__DIR__.'/..')
->sort($finderSort)
;
foreach ($finder as $file) {
$this->addFile($phar, $file);
}
// Add runtime utilities separately to make sure they retains the docblocks as these will get copied into projects
$this->addFile($phar, new \SplFileInfo(__DIR__ . '/Autoload/ClassLoader.php'), false);
$this->addFile($phar, new \SplFileInfo(__DIR__ . '/InstalledVersions.php'), false);
// Add Composer resources
$finder = new Finder();
$finder->files()
->in((getenv('BUILDROOT')?:'') . '/usr/share/composer/res')
->sort($finderSort)
;
foreach ($finder as $file) {
$this->addFile($phar, $file, false);
}
// Add vendor files
$finder = new Finder();
$finder->files()
->ignoreVCS(true)
->notPath('/\/(composer\.(json|lock)|[A-Z]+\.md(?:own)?|\.gitignore|appveyor.yml|phpunit\.xml\.dist|phpstan\.neon\.dist|phpstan-config\.neon|phpstan-baseline\.neon)$/')
->notPath('/bin\/(jsonlint|validate-json|simple-phpunit|phpstan|phpstan\.phar)(\.bat)?$/')
->notPath('justinrainbow/json-schema/demo/')
->notPath('justinrainbow/json-schema/dist/')
->notPath('composer/installed.json')
->notPath('composer/LICENSE')
->exclude('Tests')
->exclude('tests')
->exclude('docs')
->in(__DIR__.'/../../vendor/')
->sort($finderSort)
;
$extraFiles = [];
foreach ([
__DIR__ . '/../../vendor/composer/spdx-licenses/res/spdx-exceptions.json',
__DIR__ . '/../../vendor/composer/spdx-licenses/res/spdx-licenses.json',
CaBundle::getBundledCaBundlePath(),
__DIR__ . '/../../vendor/symfony/console/Resources/bin/hiddeninput.exe',
__DIR__ . '/../../vendor/symfony/console/Resources/completion.bash',
] as $file) {
$extraFiles[$file] = realpath($file);
if (!file_exists($file)) {
throw new \RuntimeException('Extra file listed is missing from the filesystem: '.$file);
}
}
$unexpectedFiles = [];
foreach ($finder as $file) {
if (false !== ($index = array_search($file->getRealPath(), $extraFiles, true))) {
unset($extraFiles[$index]);
} elseif (!Preg::isMatch('{(^LICENSE$|\.php$)}', $file->getFilename())) {
$unexpectedFiles[] = (string) $file;
}
if (Preg::isMatch('{\.php[\d.]*$}', $file->getFilename())) {
$this->addFile($phar, $file);
} else {
$this->addFile($phar, $file, false);
}
}
if (count($extraFiles) > 0) {
throw new \RuntimeException('These files were expected but not added to the phar, they might be excluded or gone from the source package:'.PHP_EOL.var_export($extraFiles, true));
}
if (count($unexpectedFiles) > 0) {
throw new \RuntimeException('These files were unexpectedly added to the phar, make sure they are excluded or listed in $extraFiles:'.PHP_EOL.var_export($unexpectedFiles, true));
}
// Add bin/composer
$this->addComposerBin($phar);
// Stubs
$phar->setStub($this->getStub());
$phar->stopBuffering();
// disabled for interoperability with systems without gzip ext
// $phar->compressFiles(\Phar::GZ);
$this->addFile($phar, new \SplFileInfo(__DIR__.'/../../LICENSE'), false);
unset($phar);
// re-sign the phar with reproducible timestamp / signature
$util = new Timestamps($pharFile);
$util->updateTimestamps($this->versionDate);
$util->save($pharFile, \Phar::SHA512);
Linter::lint($pharFile, [
'vendor/symfony/console/Attribute/AsCommand.php',
'vendor/symfony/polyfill-intl-grapheme/bootstrap80.php',
'vendor/symfony/polyfill-intl-normalizer/bootstrap80.php',
'vendor/symfony/polyfill-mbstring/bootstrap80.php',
'vendor/symfony/polyfill-php73/Resources/stubs/JsonException.php',
'vendor/symfony/service-contracts/Attribute/SubscribedService.php',
]);
}
private function getRelativeFilePath(\SplFileInfo $file): string
{
$realPath = $file->getRealPath();
$pathPrefix = dirname(__DIR__, 2).DIRECTORY_SEPARATOR;
$pos = strpos($realPath, $pathPrefix);
$relativePath = ($pos !== false) ? substr_replace($realPath, '', $pos, strlen($pathPrefix)) : $realPath;
return strtr($relativePath, '\\', '/');
}
private function addFile(\Phar $phar, \SplFileInfo $file, bool $strip = true): void
{
$path = $this->getRelativeFilePath($file);
$content = file_get_contents((string) $file);
if ($strip) {
$content = $this->stripWhitespace($content);
} elseif ('LICENSE' === $file->getFilename()) {
$content = "\n".$content."\n";
}
if ($path === 'src/Composer/Composer.php') {
$content = strtr(
$content,
[
'@package_version@' => $this->version,
'@package_branch_alias_version@' => $this->branchAliasVersion,
'@release_date@' => $this->versionDate->format('Y-m-d H:i:s'),
]
);
$content = Preg::replace('{SOURCE_VERSION = \'[^\']+\';}', 'SOURCE_VERSION = \'\';', $content);
}
$phar->addFromString($path, $content);
}
private function addComposerBin(\Phar $phar): void
{
$content = file_get_contents(__DIR__.'/../../bin/composer');
$content = Preg::replace('{^#!/usr/bin/env php\s*}', '', $content);
$phar->addFromString('bin/composer', $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(string $source): string
{
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 function getStub(): string
{
$stub = <<<'EOF'
#!/usr/bin/env php
<?php
/*
* This file is part of Composer.
*
* (c) Nils Adermann <naderman@naderman.de>
* Jordi Boggiano <j.boggiano@seld.be>
*
* For the full copyright and license information, please view
* the license that is located at the bottom of this file.
*/
// Avoid APC causing random fatal errors per https://github.com/composer/composer/issues/264
if (extension_loaded('apc') && filter_var(ini_get('apc.enable_cli'), FILTER_VALIDATE_BOOLEAN) && filter_var(ini_get('apc.cache_by_default'), FILTER_VALIDATE_BOOLEAN)) {
if (version_compare(phpversion('apc'), '3.0.12', '>=')) {
ini_set('apc.cache_by_default', 0);
} else {
fwrite(STDERR, 'Warning: APC <= 3.0.12 may cause fatal errors when running composer commands.'.PHP_EOL);
fwrite(STDERR, 'Update APC, or set apc.enable_cli or apc.cache_by_default to 0 in your php.ini.'.PHP_EOL);
}
}
if (!class_exists('Phar')) {
echo 'PHP\'s phar extension is missing. Composer requires it to run. Enable the extension or recompile php without --disable-phar then try again.' . PHP_EOL;
exit(1);
}
Phar::mapPhar('composer.phar');
EOF;
// add warning once the phar is older than 60 days
if (Preg::isMatch('{^[a-f0-9]+$}', $this->version)) {
$warningTime = ((int) $this->versionDate->format('U')) + 60 * 86400;
$stub .= "define('COMPOSER_DEV_WARNING_TIME', $warningTime);\n";
}
return $stub . <<<'EOF'
require 'phar://composer.phar/bin/composer';
__HALT_COMPILER();
EOF;
}
}
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