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Current File : /webler/tggtd.org/core/vendor/laravel/framework/src/Illuminate/Validation/ValidationRuleParser.php
<?php

namespace Illuminate\Validation;

use Closure;
use Illuminate\Support\Arr;
use Illuminate\Support\Str;
use Illuminate\Validation\Rules\Exists;
use Illuminate\Validation\Rules\Unique;
use Illuminate\Contracts\Validation\Rule as RuleContract;

class ValidationRuleParser
{
    /**
     * The data being validated.
     *
     * @var array
     */
    public $data;

    /**
     * The implicit attributes.
     *
     * @var array
     */
    public $implicitAttributes = [];

    /**
     * Create a new validation rule parser.
     *
     * @param  array  $data
     * @return void
     */
    public function __construct(array $data)
    {
        $this->data = $data;
    }

    /**
     * Parse the human-friendly rules into a full rules array for the validator.
     *
     * @param  array  $rules
     * @return \stdClass
     */
    public function explode($rules)
    {
        $this->implicitAttributes = [];

        $rules = $this->explodeRules($rules);

        return (object) [
            'rules' => $rules,
            'implicitAttributes' => $this->implicitAttributes,
        ];
    }

    /**
     * Explode the rules into an array of explicit rules.
     *
     * @param  array  $rules
     * @return array
     */
    protected function explodeRules($rules)
    {
        foreach ($rules as $key => $rule) {
            if (Str::contains($key, '*')) {
                $rules = $this->explodeWildcardRules($rules, $key, [$rule]);

                unset($rules[$key]);
            } else {
                $rules[$key] = $this->explodeExplicitRule($rule);
            }
        }

        return $rules;
    }

    /**
     * Explode the explicit rule into an array if necessary.
     *
     * @param  mixed  $rule
     * @return array
     */
    protected function explodeExplicitRule($rule)
    {
        if (is_string($rule)) {
            return explode('|', $rule);
        } elseif (is_object($rule)) {
            return [$this->prepareRule($rule)];
        }

        return array_map([$this, 'prepareRule'], $rule);
    }

    /**
     * Prepare the given rule for the Validator.
     *
     * @param  mixed  $rule
     * @return mixed
     */
    protected function prepareRule($rule)
    {
        if ($rule instanceof Closure) {
            $rule = new ClosureValidationRule($rule);
        }

        if (! is_object($rule) ||
            $rule instanceof RuleContract ||
            ($rule instanceof Exists && $rule->queryCallbacks()) ||
            ($rule instanceof Unique && $rule->queryCallbacks())) {
            return $rule;
        }

        return (string) $rule;
    }

    /**
     * Define a set of rules that apply to each element in an array attribute.
     *
     * @param  array  $results
     * @param  string  $attribute
     * @param  string|array  $rules
     * @return array
     */
    protected function explodeWildcardRules($results, $attribute, $rules)
    {
        $pattern = str_replace('\*', '[^\.]*', preg_quote($attribute));

        $data = ValidationData::initializeAndGatherData($attribute, $this->data);

        foreach ($data as $key => $value) {
            if (Str::startsWith($key, $attribute) || (bool) preg_match('/^'.$pattern.'\z/', $key)) {
                foreach ((array) $rules as $rule) {
                    $this->implicitAttributes[$attribute][] = $key;

                    $results = $this->mergeRules($results, $key, $rule);
                }
            }
        }

        return $results;
    }

    /**
     * Merge additional rules into a given attribute(s).
     *
     * @param  array  $results
     * @param  string|array  $attribute
     * @param  string|array  $rules
     * @return array
     */
    public function mergeRules($results, $attribute, $rules = [])
    {
        if (is_array($attribute)) {
            foreach ((array) $attribute as $innerAttribute => $innerRules) {
                $results = $this->mergeRulesForAttribute($results, $innerAttribute, $innerRules);
            }

            return $results;
        }

        return $this->mergeRulesForAttribute(
            $results, $attribute, $rules
        );
    }

    /**
     * Merge additional rules into a given attribute.
     *
     * @param  array  $results
     * @param  string  $attribute
     * @param  string|array  $rules
     * @return array
     */
    protected function mergeRulesForAttribute($results, $attribute, $rules)
    {
        $merge = head($this->explodeRules([$rules]));

        $results[$attribute] = array_merge(
            isset($results[$attribute]) ? $this->explodeExplicitRule($results[$attribute]) : [], $merge
        );

        return $results;
    }

    /**
     * Extract the rule name and parameters from a rule.
     *
     * @param  array|string  $rules
     * @return array
     */
    public static function parse($rules)
    {
        if ($rules instanceof RuleContract) {
            return [$rules, []];
        }

        if (is_array($rules)) {
            $rules = static::parseArrayRule($rules);
        } else {
            $rules = static::parseStringRule($rules);
        }

        $rules[0] = static::normalizeRule($rules[0]);

        return $rules;
    }

    /**
     * Parse an array based rule.
     *
     * @param  array  $rules
     * @return array
     */
    protected static function parseArrayRule(array $rules)
    {
        return [Str::studly(trim(Arr::get($rules, 0))), array_slice($rules, 1)];
    }

    /**
     * Parse a string based rule.
     *
     * @param  string  $rules
     * @return array
     */
    protected static function parseStringRule($rules)
    {
        $parameters = [];

        // The format for specifying validation rules and parameters follows an
        // easy {rule}:{parameters} formatting convention. For instance the
        // rule "Max:3" states that the value may only be three letters.
        if (strpos($rules, ':') !== false) {
            [$rules, $parameter] = explode(':', $rules, 2);

            $parameters = static::parseParameters($rules, $parameter);
        }

        return [Str::studly(trim($rules)), $parameters];
    }

    /**
     * Parse a parameter list.
     *
     * @param  string  $rule
     * @param  string  $parameter
     * @return array
     */
    protected static function parseParameters($rule, $parameter)
    {
        $rule = strtolower($rule);

        if (in_array($rule, ['regex', 'not_regex', 'notregex'], true)) {
            return [$parameter];
        }

        return str_getcsv($parameter);
    }

    /**
     * Normalizes a rule so that we can accept short types.
     *
     * @param  string  $rule
     * @return string
     */
    protected static function normalizeRule($rule)
    {
        switch ($rule) {
            case 'Int':
                return 'Integer';
            case 'Bool':
                return 'Boolean';
            default:
                return $rule;
        }
    }
}
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