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<?php |
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/* |
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* This file is part of the eluceo/iCal package. |
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* |
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* (c) Markus Poerschke <[email protected]> |
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* |
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* This source file is subject to the MIT license that is bundled |
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* with this source code in the file LICENSE. |
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*/ |
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namespace Eluceo\iCal; |
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class ParameterBag |
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{ |
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/** |
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* The params. |
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* |
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* @var array |
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*/ |
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protected $params; |
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public function __construct($params = []) |
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{ |
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$this->params = $params; |
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} |
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/** |
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* @param string $name |
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* @param mixed $value |
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*/ |
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public function setParam($name, $value) |
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{ |
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$this->params[$name] = $value; |
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} |
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/** |
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* @param $name |
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* |
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* @return array|mixed |
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*/ |
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public function getParam($name) |
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{ |
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if (isset($this->params[$name])) { |
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return $this->params[$name]; |
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} |
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return null; |
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} |
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/** |
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* Checks if there are any params. |
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*/ |
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public function hasParams(): bool |
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{ |
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return count($this->params) > 0; |
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} |
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public function toString(): string |
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{ |
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$line = ''; |
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foreach ($this->params as $param => $paramValues) { |
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if (!is_array($paramValues)) { |
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$paramValues = [$paramValues]; |
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} |
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foreach ($paramValues as $k => $v) { |
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$paramValues[$k] = $this->escapeParamValue($v); |
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} |
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if ('' != $line) { |
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$line .= ';'; |
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} |
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$line .= $param . '=' . implode(',', $paramValues); |
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} |
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return $line; |
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} |
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/** |
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* Returns an escaped string for a param value. |
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* |
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* @param string $value |
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* |
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* @return string |
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*/ |
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private function escapeParamValue($value) |
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{ |
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$count = 0; |
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$value = str_replace('\\', '\\\\', $value); |
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$value = str_replace('"', '\"', $value, $count); |
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$value = str_replace("\n", '\\n', $value); |
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if (false !== strpos($value, ';') || false !== strpos($value, ',') || false !== strpos($value, ':') || $count) { |
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$value = '"' . $value . '"'; |
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} |
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return $value; |
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} |
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/** |
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* @return string |
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*/ |
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public function __toString() |
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{ |
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return $this->toString(); |
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} |
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} |
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In PHP, under loose comparison (like
==
, or!=
, orswitch
conditions), values of different types might be equal.For
integer
values, zero is a special case, in particular the following results might be unexpected: