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<?php |
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/** |
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* League.Period (https://period.thephpleague.com) |
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* |
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* (c) Ignace Nyamagana Butera <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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declare(strict_types=1); |
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namespace League\Period\Chart\Label; |
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use function preg_replace; |
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final class AffixLabel implements LabelGenerator |
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{ |
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/** |
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* @var LabelGenerator |
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*/ |
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private $labelGenerator; |
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/** |
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* @var string |
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*/ |
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private $prefix = ''; |
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/** |
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* @var string |
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*/ |
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private $suffix = ''; |
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/** |
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* New instance. |
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*/ |
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public function __construct(LabelGenerator $labelGenerator, string $prefix = '', string $suffix = '') |
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{ |
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$this->labelGenerator = $labelGenerator; |
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$this->prefix = $this->filterString($prefix); |
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$this->suffix = $this->filterString($suffix); |
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} |
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private function filterString(string $str): string |
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{ |
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return (string) preg_replace("/[\r\n]/", '', $str); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function generate(int $nbLabels): \Iterator |
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{ |
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foreach ($this->labelGenerator->generate($nbLabels) as $key => $label) { |
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yield $key => $this->prefix.$label.$this->suffix; |
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} |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function format(string $label): string |
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{ |
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return $this->prefix.$this->labelGenerator->format($label).$this->suffix; |
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} |
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/** |
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* Returns the suffix. |
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*/ |
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public function suffix(): string |
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{ |
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return $this->suffix; |
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} |
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/** |
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* Returns the prefix. |
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*/ |
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public function prefix(): string |
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{ |
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return $this->prefix; |
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} |
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/** |
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* Return an instance with the suffix. |
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* |
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* This method MUST retain the state of the current instance, and return |
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* an instance that contains the suffix. |
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*/ |
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public function withSuffix(string $suffix): self |
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{ |
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$suffix = $this->filterString($suffix); |
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if ($suffix === $this->suffix) { |
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return $this; |
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} |
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$clone = clone $this; |
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$clone->suffix = $suffix; |
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return $clone; |
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} |
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/** |
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* Return an instance with the prefix. |
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* |
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* This method MUST retain the state of the current instance, and return |
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* an instance that contains the prefix. |
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*/ |
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public function withPrefix(string $prefix): self |
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{ |
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$prefix = $this->filterString($prefix); |
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if ($prefix === $this->prefix) { |
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return $this; |
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} |
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$clone = clone $this; |
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$clone->prefix = $prefix; |
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return $clone; |
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} |
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} |
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thephpleague /
period
