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<?php |
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/* |
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* @copyright (c) 2019 Mendel <[email protected]> |
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* @license see license.txt |
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*/ |
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namespace drycart\data; |
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/** |
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* Helper for simple compare checks |
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* |
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* @author mendel |
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*/ |
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class CompareHelper |
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{ |
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// Dont change order - longer will be first (before other started from same symbols) |
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// @2DO: when updated StrHepler::findPrefix - refactor for remove aliases |
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const RULES = [ |
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'<=', '=<', '>=', '=>','!=','<>', '!like:','!contain:', '!in:', 'like:','contain:', 'in:', '<', '>', '!', '=' |
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]; |
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const STARED_RULES = [ |
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'*<=', '*=<', '*>=', '*=>','*!=','*<>', '*!like:','*!contain:', '*!in:', '*like:','*contain:', '*in:', '*<', '*>', '*!', '*=' |
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]; |
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const RULES_ALIASES = [ |
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'=<' => '<=', |
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'=>' => '>=', |
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'!' => '!=', |
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'<>' => '!=', |
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'*=<' => '*<=', |
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'*=>' => '*>=', |
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'*!' => '*!=', |
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'*<>' => '*!=', |
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]; |
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/** |
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* Compare two values using orders list in format [field1, field2, !field3] |
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* where ! is reverse ordering |
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* @param array $orders |
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* @param type $value1 |
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* @param type $value2 |
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* @return int |
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*/ |
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public static function compareByOrders(array $orders, $value1, $value2) : int |
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{ |
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$wrapper1 = new DataWrapper($value1); |
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$wrapper2 = new DataWrapper($value2); |
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foreach($orders as $order) { |
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if($order[0] == '!') { |
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$field = substr($order, 1); |
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$direction = 1; |
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} else { |
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$field = $order; |
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$direction = -1; |
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} |
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if ($wrapper1[$field] != $wrapper2[$field]) { |
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return $direction * ($wrapper1[$field] < $wrapper2[$field] ? -1 : 1); |
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} |
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} |
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return 0; |
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} |
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/** |
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* Find prefix supported by ruleCheck |
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* return two value. first is rule, second is last part of string |
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* |
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* @param string $str |
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* @return array |
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*/ |
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public static function findRulePrefix(string $str) : array |
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{ |
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$allRules = array_merge(self::STARED_RULES, self::RULES); |
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[$rule,$field] = StrHelper::findPrefix($str, $allRules, '='); |
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return [static::tryRuleAliase($rule), $field]; |
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} |
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/** |
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* If array of rules is in "simple format" |
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* convert it to full format |
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* @param array $rules |
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* @return array |
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*/ |
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public static function tryPrepareSimpleRules(array $rules) : array |
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{ |
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if(empty($rules) or isset($rules[0])) { |
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return $rules; |
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} |
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$result = ['and']; |
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foreach($rules as $fieldRule=>$arg2) { |
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[$rule, $arg1] = static::findRulePrefix($fieldRule); |
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$result[] = [$rule, $arg1, $arg2]; |
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} |
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return $result; |
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} |
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/** |
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* Do simple checks by rules |
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* rule is one of: '<=', '=<', '>=', '=>', '!like:','!contain:', '!in:', |
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* 'like:','contain:', 'in:', '<', '>', '!', '=' |
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* value1 and value2 is is parameters for compare |
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* |
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* @param string $rule |
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* @param mixed $value1 |
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* @param mixed $value2 |
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* @return bool |
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* @throws \Exception |
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*/ |
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public static function checkRule(string $rule, $value1, $value2) : bool |
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{ |
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switch ($rule) { |
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case '<=': |
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return ($value1 <= $value2); |
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case '>=': |
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return ($value1 >= $value2); |
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case '!like:': |
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return !StrHelper::like($value1, $value2); |
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case '!in:': |
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return !in_array($value1, $value2); |
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case '!contain:': |
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return !in_array($value2, $value1); |
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case 'like:': |
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return StrHelper::like($value1, $value2); |
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case 'contain:': |
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return in_array($value2, $value1); |
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case 'in:': |
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return in_array($value1, $value2); |
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case '<': |
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return ($value1 < $value2); |
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case '>': |
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return ($value1 > $value2); |
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case '!=': |
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return ($value1 != $value2); |
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case '=': |
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return ($value1 == $value2); |
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default: |
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throw new \RuntimeException('Unknown rule '.$rule); |
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} |
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} |
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protected static function tryRuleAliase(string $rule) : string |
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{ |
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if(isset(self::RULES_ALIASES[$rule])) { |
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return self::RULES_ALIASES[$rule]; |
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} else { |
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return $rule; |
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} |
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} |
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} |
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drycart /
data
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This check marks access to variables or properties that have not been declared yet. While PHP has no explicit notion of declaring a variable, accessing it before a value is assigned to it is most likely a bug.