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<?php |
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namespace AlgoWeb\xsdTypes\AxillaryClasses; |
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class XMLDateInterval extends \DateInterval |
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{ |
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/** |
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* formating string like ISO 8601 (PnYnMnDTnHnMnS). |
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*/ |
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const INTERVAL_ISO8601 = 'P%yY%mM%dDT%hH%iM%sS'; |
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private $pattern; |
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private $patternLen; |
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public function __construct($intervalSpec, $pattern = 'PnYnMnDTnHnMnS') |
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{ |
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parent::__construct(trim($intervalSpec, '-')); |
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if ($intervalSpec[0] == '-') { |
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$this->invert = 1; |
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} |
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$this->pattern = trim($pattern); |
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$this->patternLen = strlen($this->pattern); |
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} |
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/** |
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* formating the interval like ISO 8601 (PnYnMnDTnHnMnS). |
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* |
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* @return string|null |
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*/ |
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public function __toString() |
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{ |
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$sReturn = $this->handleSign(); |
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$tSeen = false; |
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for ($i = 0; $i < $this->patternLen; $i++) { |
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$sReturn .= $this->handleChar($i, $tSeen); |
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} |
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return $sReturn; |
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} |
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/** |
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* @return string |
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*/ |
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private function handleSign() |
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{ |
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if ($this->invert === 1) { |
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return '-'; |
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} |
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return ''; |
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} |
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/** |
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* @param int $i |
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* @param bool $tSeen |
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* |
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* @return string |
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*/ |
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private function handleChar($i, &$tSeen) |
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{ |
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switch ($this->pattern[$i]) { |
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case 'n': |
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return $this->handleN($i, $tSeen); |
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case 'T': |
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return $this->handleT($tSeen); |
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default: |
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return $this->handleOther($i); |
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} |
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} |
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/** |
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* @param int $i |
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* @param bool $tSeen |
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* |
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* @return string |
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*/ |
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private function handleN($i, $tSeen) |
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{ |
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$v = ($this->pattern[$i + 1] == 'M' && $tSeen) ? 'i' : strtolower($this->pattern[$i + 1]); |
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return $this->$v; |
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} |
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/** |
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* @param bool $tSeen |
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* |
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* @return string |
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*/ |
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private function handleT(&$tSeen) |
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{ |
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$tSeen = true; |
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return 'T'; |
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} |
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/** |
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* @param int $i |
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* |
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* @return string |
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*/ |
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private function handleOther($i) |
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{ |
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return $this->pattern[$i]; |
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} |
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} |
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Algo-Web /
xsdTypes
