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<?php |
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/* this file is part of pipelines */ |
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namespace Ktomk\Pipelines\Value\Env; |
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/** |
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* -e, --env <value> |
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*/ |
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class EnvVar |
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{ |
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const PATTERN = '~^([^\\x0-\\x20$={}\\x7f-\\xff-]+)(?:=([^\\0]*))?$~'; |
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/** |
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* @var array |
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*/ |
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private $expression; |
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/** |
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* @param string $env |
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*/ |
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public function __construct($env) |
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{ |
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$this->parseDefinition((string)$env); |
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} |
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public function __toString() |
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{ |
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list($name, $value) = $this->expression; |
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return $name . (isset($value) ? '=' . $value : ''); |
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} |
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/** |
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* @return string |
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*/ |
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1 |
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public function getName() |
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{ |
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return $this->expression[0]; |
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} |
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/** |
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* @return null|string |
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*/ |
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public function tryValue() |
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{ |
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return $this->expression[1]; |
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} |
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public function getValue() |
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{ |
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$value = $this->expression[1]; |
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if (null === $value) { |
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throw new \BadFunctionCallException( |
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sprintf('Environment variable %s has no value', $this->expression[0]) |
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); |
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} |
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return $value; |
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} |
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/** |
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* @return array{string, string|null} |
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*/ |
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public function getPair() |
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{ |
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return $this->expression; |
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} |
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/** |
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* @param string $definition |
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* |
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* @return void |
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*/ |
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private function parseDefinition($definition) |
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{ |
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$result = preg_match(self::PATTERN, $definition, $matches); |
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if (0 === $result) { |
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throw new \InvalidArgumentException(sprintf( |
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'Environment variable error: %s', |
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addcslashes($definition, "\0..\40\\\177..\377") |
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)); |
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} |
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/** @var array{0: string, 1: string, 2: null|string} $matches */ |
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list(, $name, $value) = $matches + array(2 => null); |
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$this->expression = array($name, $value); |
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} |
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} |
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ktomk /
pipelines
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