Humbug\PhpScoper\Handler\HandleAddPrefix

Complexity

Total Complexity

23

Size/Duplication

Total Lines	250
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	7

Test Coverage

Coverage

78.72%

Importance

Changes

0

6 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	5	1
B	__invoke()	0	30	3
B	createGlobalWhitelister()	0	21	5
B	retrieveFiles()	0	69	6
B	scopeFiles()	0	33	4
B	scopeFile()	0	37	4

<?php

declare(strict_types=1);

/*
 * This file is part of the humbug/php-scoper package.
 *
 * Copyright (c) 2017 Théo FIDRY <theo.fidry@gmail.com>,
 *                    Pádraic Brady <padraic.brady@gmail.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Humbug\PhpScoper\Handler;

use Closure;
use Humbug\PhpScoper\Autoload\ScoperAutoloadGenerator;
use Humbug\PhpScoper\Logger\ConsoleLogger;
use Humbug\PhpScoper\Scoper;
use Humbug\PhpScoper\Throwable\Exception\ParsingException;
use Humbug\PhpScoper\Throwable\Exception\RuntimeException;
use SplFileInfo;
use Symfony\Component\Filesystem\Filesystem;
use Symfony\Component\Finder\Finder;
use Throwable;
use function Humbug\PhpScoper\get_common_path;

/**
 * @final
 */
class HandleAddPrefix
{
    private $fileSystem;
    private $scoper;

    public function __construct(Scoper $scoper)
    {
        $this->fileSystem = new Filesystem();
        $this->scoper = $scoper;
    }

    /**
     * Applies prefix to all the code found in the given paths, AKA scope all the files found.
     *
     * @param string              $prefix                   e.g. 'Foo'
     * @param string[]            $paths                    List of files (absolute paths) which will be scoped
     * @param string              $output                   Absolute path to the output directory
     * @param callable[]          $patchers
     * @param string[]            $whitelist                List of classes that will not be scoped
     * @param string[]|callable[] $globalNamespaceWhitelist
     * @param bool                $stopOnFailure
     * @param ConsoleLogger       $logger
     */
    public function __invoke(
        string $prefix,
        array $paths,
        string $output,
        array $patchers,
        array $whitelist,
        array $globalNamespaceWhitelist,
        bool $stopOnFailure,
        ConsoleLogger $logger
    ) {
        $this->fileSystem->mkdir($output);

        try {
            $files = $this->retrieveFiles($paths, $output);

            $globalWhitelister = $this->createGlobalWhitelister($globalNamespaceWhitelist);

            $vendorDir = $this->scopeFiles($files, $prefix, $patchers, $whitelist, $globalWhitelister, $stopOnFailure, $logger);

            if (null !== $vendorDir) {
                $autoload = (new ScoperAutoloadGenerator($whitelist))->dump($prefix);

                $this->fileSystem->dumpFile($vendorDir.'/scoper-autoload.php', $autoload);
            }
        } catch (Throwable $throwable) {
            $this->fileSystem->remove($output);

            throw $throwable;
        }
    }

    /**
     * @param string[]|callable[] $globalNamespaceWhitelist
     *
     * @return Closure
     */
    private function createGlobalWhitelister(array $globalNamespaceWhitelist): Closure
    {
        return function (string $className) use ($globalNamespaceWhitelist): bool {
            foreach ($globalNamespaceWhitelist as $whitelister) {
                if (is_string($whitelister)) {
                    if ($className === $whitelister) {
                        return true;
                    } else {
                        continue;
                    }
                }

                /** @var callable $whitelister */
                if (true === $whitelister($className)) {
                    return true;
                }
            }

            return false;
        };
    }

    /**
     * @param string[] $paths
     * @param string   $output
     *
     * @return string[]
     */
    private function retrieveFiles(array $paths, string $output): array
    {
        $pathsToSearch = [];
        $filesToAppend = [];

        foreach ($paths as $path) {
            if (false === file_exists($path)) {
                throw new RuntimeException(
                    sprintf(
                        'Could not find the file "%s".',
                        $path
                    )
                );
            }

            if (is_dir($path)) {
                $pathsToSearch[] = $path;
            } else {
                $filesToAppend[] = $path;
            }
        }

        $finder = new Finder();

        $finder->files()
            ->in($pathsToSearch)
            ->append($filesToAppend)
            ->sortByName()
        ;

        $files = array_values(
            array_map(
                function (SplFileInfo $fileInfo) {
                    return $fileInfo->getRealPath();
                },
                iterator_to_array($finder)
            )
        );

        $commonPath = get_common_path($files);

        return array_reduce(
            $files,
            function (array $files, string $file) use ($output, $commonPath): array {
                if (false === file_exists($file)) {
                    throw new RuntimeException(
                        sprintf(
                            'Could not find the file "%s".',
                            $file
                        )
                    );
                }

                if (false === is_readable($file)) {
                    throw new RuntimeException(
                        sprintf(
                            'Could not read the file "%s".',
                            $file
                        )
                    );
                }

                $files[$file] = $output.str_replace($commonPath, '', $file);

                return $files;
            },
            []
        );
    }

    /**
     * @param string[]      $files
     * @param string        $prefix
     * @param callable[]    $patchers
     * @param string[]      $whitelist
     * @param callable      $globalWhitelister
     * @param bool          $stopOnFailure
     * @param ConsoleLogger $logger
     *
     * @return string|null
     */
    private function scopeFiles(
        array $files,
        string $prefix,
        array $patchers,
        array $whitelist,
        callable $globalWhitelister,
        bool $stopOnFailure,
        ConsoleLogger $logger
    ): ?string {
        $count = count($files);
        $logger->outputFileCount($count);

        $vendorDirs = [];

        foreach ($files as $inputFilePath => $outputFilePath) {
            if (preg_match('~((?:.*)\/vendor)\/.*~', $outputFilePath, $matches)) {
                $vendorDirs[$matches[1]] = true;
            }

            $this->scopeFile($inputFilePath, $outputFilePath, $prefix, $patchers, $whitelist, $globalWhitelister, $stopOnFailure, $logger);
        }

        $vendorDirs = array_keys($vendorDirs);

        usort(
            $vendorDirs,
            function ($a, $b) {
                return strlen($b) <=> strlen($a);
            }
        );

        return (0 === count($vendorDirs)) ? null : $vendorDirs[0];
    }

    /**
     * @param string        $inputFilePath
     * @param string        $outputFilePath
     * @param string        $prefix
     * @param callable[]    $patchers
     * @param string[]      $whitelist
     * @param callable      $globalWhitelister
     * @param bool          $stopOnFailure
     * @param ConsoleLogger $logger
     */
    private function scopeFile(
        string $inputFilePath,
        string $outputFilePath,
        string $prefix,
        array $patchers,
        array $whitelist,
        callable $globalWhitelister,
        bool $stopOnFailure,
        ConsoleLogger $logger
    ) {
        try {
            $scoppedContent = $this->scoper->scope($inputFilePath, $prefix, $patchers, $whitelist, $globalWhitelister);
        } catch (Throwable $error) {
            $exception = new ParsingException(
                sprintf(
                    'Could not parse the file "%s".',
                    $inputFilePath
                ),
                0,
                $error
            );

            if ($stopOnFailure) {
                throw $exception;
            }

            $logger->outputWarnOfFailure($inputFilePath, $exception);

            $scoppedContent = file_get_contents($inputFilePath);
        }

        $this->fileSystem->dumpFile($outputFilePath, $scoppedContent);

        if (false === isset($exception)) {
            $logger->outputSuccess($inputFilePath);
        }
    }
}