<?php

namespace Composer\Package\Archiver;

use Composer\Pcre\Preg;
use Symfony\Component\Finder;

/**
 * @author Nils Adermann <naderman@naderman.de>
 */
abstract class BaseExcludeFilter
{
	/** @var string */
	protected $sourcePath;

	/** @var array<array{0: non-empty-string, 1: bool, 2: bool}> array of [$pattern, $negate, $stripLeadingSlash] arrays */
	protected $excludePatterns;


	/**
	 * @param string $sourcePath Directory containing sources to be filtered
	 */
	public function __construct(string $sourcePath)
	{
		$this->sourcePath = $sourcePath;
		$this->excludePatterns = [];
	}


	/**
	 * Checks the given path against all exclude patterns in this filter
	 *
	 * Negated patterns overwrite exclude decisions of previous filters.
	 *
	 * @param string $relativePath The file's path relative to the sourcePath
	 * @param bool $exclude Whether a previous filter wants to exclude this file
	 *
	 * @return bool Whether the file should be excluded
	 */
	public function filter(string $relativePath, bool $exclude): bool
	{
		foreach ($this->excludePatterns as $patternData) {
		    [$pattern, $negate, $stripLeadingSlash] = $patternData;

		    if ($stripLeadingSlash) {
		        $path = substr($relativePath, 1);
		    } else {
		        $path = $relativePath;
		    }

		    try {
		        if (Preg::isMatch($pattern, $path)) {
		            $exclude = !$negate;
		        }
		    } catch (\RuntimeException $e) {
		        // suppressed
		    }
		}

		return $exclude;
	}


	/**
	 * Processes a file containing exclude rules of different formats per line
	 *
	 * @param string[] $lines A set of lines to be parsed
	 * @param callable $lineParser The parser to be used on each line
	 *
	 * @return array<array{0: non-empty-string, 1: bool, 2: bool}> Exclude patterns to be used in filter()
	 */
	protected function parseLines(array $lines, callable $lineParser): array
	{
		return array_filter(
		    array_map(
		        static function ($line) use ($lineParser) {
		            $line = trim($line);

		            if (!$line || 0 === strpos($line, '#')) {
		                return null;
		            }

		            return $lineParser($line);
		        },
		        $lines
		    ),
		    static function ($pattern): bool {
		        return $pattern !== null;
		    }
		);
	}


	/**
	 * Generates a set of exclude patterns for filter() from gitignore rules
	 *
	 * @param string[] $rules A list of exclude rules in gitignore syntax
	 *
	 * @return array<int, array{0: non-empty-string, 1: bool, 2: bool}> Exclude patterns
	 */
	protected function generatePatterns(array $rules): array
	{
		$patterns = [];
		foreach ($rules as $rule) {
		    $patterns[] = $this->generatePattern($rule);
		}

		return $patterns;
	}


	/**
	 * Generates an exclude pattern for filter() from a gitignore rule
	 *
	 * @param string $rule An exclude rule in gitignore syntax
	 *
	 * @return array{0: non-empty-string, 1: bool, 2: bool} An exclude pattern
	 */
	protected function generatePattern(string $rule): array
	{
		$negate = false;
		$pattern = '';

		if ($rule !== '' && $rule[0] === '!') {
		    $negate = true;
		    $rule = ltrim($rule, '!');
		}

		$firstSlashPosition = strpos($rule, '/');
		if (0 === $firstSlashPosition) {
		    $pattern = '^/';
		} elseif (false === $firstSlashPosition || strlen($rule) - 1 === $firstSlashPosition) {
		    $pattern = '/';
		}

		$rule = trim($rule, '/');

		// remove delimiters as well as caret (^) and dollar sign ($) from the regex
		$rule = substr(Finder\Glob::toRegex($rule), 2, -2);

		return ['{'.$pattern.$rule.'(?=$|/)}', $negate, false];
	}
}
__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----MzkwMDk0MTYxMTczNDM2NyA2OTgyNDkwNjYyNTcwMzIyIDQ0NTI4ODcxODg4OTIzODM=