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<?php |
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/** |
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* @package Mailcode |
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* @subpackage Commands |
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*/ |
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declare(strict_types=1); |
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namespace Mailcode; |
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use AppUtils\ConvertHelper; |
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use AppUtils\OperationResult; |
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/** |
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* Handles parsing logic keywords in commands, if any. |
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* |
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* @package Mailcode |
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* @subpackage Commands |
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* @author Sebastian Mordziol <[email protected]> |
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* |
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* @property Mailcode_Commands_Command $subject |
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*/ |
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class Mailcode_Commands_LogicKeywords extends OperationResult |
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{ |
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public const ERROR_CANNOT_APPEND_INVALID_KEYWORD = 60501; |
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public const ERROR_KEYWORD_MATCHED_STRING_NOT_FOUND = 60502; |
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public const VALIDATION_CANNOT_MIX_LOGIC_KEYWORDS = 60701; |
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public const VALIDATION_INVALID_SUB_COMMAND = 60702; |
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public const ERROR_KEYWORD_SUBSTRING_NOT_FOUND = 60503; |
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private string $paramsString; |
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/** |
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* @var string[] |
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*/ |
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private array $names = array( |
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'and', |
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'or' |
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); |
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/** |
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* @var Mailcode_Commands_LogicKeywords_Keyword[] |
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*/ |
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private array $keywords = array(); |
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private string $mainParams = ''; |
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public function __construct(Mailcode_Commands_Command $command, string $paramsString) |
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{ |
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parent::__construct($command); |
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$this->paramsString = $paramsString; |
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$this->parse(); |
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$this->validate(); |
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} |
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public function getCommand() : Mailcode_Commands_Command |
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{ |
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return $this->subject; |
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} |
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private function parse() : void |
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{ |
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foreach($this->names as $name) |
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{ |
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if(stripos($this->paramsString, $name) === false) { |
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continue; |
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} |
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array_push( |
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$this->keywords, |
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...$this->detectKeywords($name) |
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); |
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} |
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} |
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private function validate() : void |
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{ |
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$names = $this->getDetectedNames(); |
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$amount = count($names); |
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if($amount > 1) |
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{ |
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$this->makeError( |
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t( |
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'Cannot mix the logical keywords %1$s:', |
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ConvertHelper::implodeWithAnd($names, ', ', ' '.t('and').' ') |
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).' '. |
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t('Only one flavor of keyword may be used within the same command.').' '. |
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t('To illustrate, you may use the %1$s keyword several times, but not the %1$s keyword and %2$s keyword at the same time.', '"and"', '"or"'), |
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self::VALIDATION_CANNOT_MIX_LOGIC_KEYWORDS |
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); |
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return; |
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} |
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$this->splitParams(); |
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} |
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private function splitParams() : void |
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{ |
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if(empty($this->keywords)) |
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{ |
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$this->mainParams = $this->paramsString; |
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return; |
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} |
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$params = $this->detectParameters(); |
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foreach($this->keywords as $keyword) |
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{ |
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$kParams = (string)array_shift($params); |
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$keyword->setParamsString($kParams); |
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if(!$keyword->isValid()) |
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{ |
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$this->makeError( |
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t('Error #%1$s:', $keyword->getCode()).' '.$keyword->getErrorMessage(), |
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self::VALIDATION_INVALID_SUB_COMMAND |
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); |
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return; |
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} |
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} |
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} |
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/** |
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* @return string[] |
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*/ |
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private function detectParameters() : array |
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{ |
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$params = $this->paramsString; |
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$stack = array(); |
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foreach($this->keywords as $keyword) |
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{ |
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$params = $this->detectParamsKeyword($params, $keyword, $stack); |
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} |
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$stack[] = $params; |
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$this->mainParams = (string)array_shift($stack); |
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return $stack; |
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} |
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/** |
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* @param string $params |
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* @param Mailcode_Commands_LogicKeywords_Keyword $keyword |
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* @param string[] $stack |
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* @throws Mailcode_Exception |
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* @return string |
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*/ |
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private function detectParamsKeyword(string $params, Mailcode_Commands_LogicKeywords_Keyword $keyword, array &$stack) : string |
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{ |
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$search = $keyword->getMatchedString(); |
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$pos = strpos($params, $search, 0); |
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if($pos === false) |
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{ |
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throw new Mailcode_Exception( |
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'Keyword matched string not found', |
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null, |
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self::ERROR_KEYWORD_MATCHED_STRING_NOT_FOUND |
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); |
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} |
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$length = strlen($search); |
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$store = substr($params, 0, $pos); |
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if($store === false) |
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{ |
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throw new Mailcode_Exception( |
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'Keyword substring not found', |
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null, |
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self::ERROR_KEYWORD_SUBSTRING_NOT_FOUND |
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); |
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} |
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$params = trim(substr($params, $pos+$length)); |
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$stack[] = $store; |
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return $params; |
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} |
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/** |
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* Extracts the parameters string to use for the |
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* original command itself, omitting all the logic |
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* keywords for the sub-commands. |
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* |
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* @return string |
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*/ |
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public function getMainParamsString() : string |
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{ |
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return $this->mainParams; |
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} |
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/** |
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* Retrieves the detected keyword names. |
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* @return string[] |
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*/ |
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public function getDetectedNames() : array |
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{ |
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$names = array(); |
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foreach($this->keywords as $keyword) |
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{ |
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$name = $keyword->getName(); |
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if(!in_array($name, $names, true)) { |
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$names[] = $name; |
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} |
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} |
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return $names; |
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} |
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/** |
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* Retrieves all keywords detected in the |
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* command's parameter string, if any. |
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* |
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* @return Mailcode_Commands_LogicKeywords_Keyword[] |
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*/ |
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public function getKeywords() : array |
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{ |
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return $this->keywords; |
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} |
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/** |
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* Detects any keyword statements in the parameters by keyword name. |
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* |
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* @param string $name |
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* @return Mailcode_Commands_LogicKeywords_Keyword[] |
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*/ |
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private function detectKeywords(string $name) : array |
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{ |
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$regex = sprintf('/%1$s\s+([a-z\-0-9]+):|%1$s:/x', $name); |
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$matches = array(); |
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preg_match_all($regex, $this->paramsString, $matches, PREG_PATTERN_ORDER); |
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if(empty($matches[0][0])) { |
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return array(); |
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} |
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$amount = count($matches[0]); |
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$result = array(); |
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for($i=0; $i < $amount; $i++) |
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{ |
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$result[] = $this->createKeyword( |
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$name, |
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$matches[1][$i], |
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$matches[0][$i] |
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); |
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} |
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return $result; |
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} |
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public function hasKeywords() : bool |
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{ |
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return !empty($this->keywords); |
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} |
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public function appendAND(string $paramsString, string $type='') : Mailcode_Commands_LogicKeywords_Keyword |
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{ |
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return $this->appendKeyword('and', $paramsString, $type); |
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} |
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public function appendOR(string $paramsString, string $type='') : Mailcode_Commands_LogicKeywords_Keyword |
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{ |
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return $this->appendKeyword('or', $paramsString, $type); |
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} |
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public function appendKeyword(string $name, string $paramsString, string $type='') : Mailcode_Commands_LogicKeywords_Keyword |
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{ |
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$keyword = $this->createKeyword($name, $type); |
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$keyword->setParamsString($paramsString); |
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if(!$keyword->isValid()) |
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{ |
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throw new Mailcode_Exception( |
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'Cannot append invalid logic keyword', |
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sprintf( |
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'The keyword [%s] cannot be added with parameters [%s] and type [%s]: it is invalid. Validation details: #%s %s', |
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$name, |
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$paramsString, |
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$type, |
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$keyword->getCode(), |
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$keyword->getErrorMessage() |
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), |
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self::ERROR_CANNOT_APPEND_INVALID_KEYWORD |
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); |
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} |
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$this->keywords[] = $keyword; |
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return $keyword; |
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} |
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private function createKeyword(string $name, string $type='', string $matchedString='') : Mailcode_Commands_LogicKeywords_Keyword |
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{ |
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if(empty($matchedString)) |
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{ |
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$matchedString = $name; |
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if(!empty($type)) |
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{ |
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$matchedString .= ' '.$type; |
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} |
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$matchedString .= ':'; |
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} |
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return new Mailcode_Commands_LogicKeywords_Keyword( |
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$this, |
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$name, |
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$matchedString, |
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$type |
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); |
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} |
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} |
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