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<?php |
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namespace Conlect\ImageIIIF\Validators; |
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use Conlect\ImageIIIF\Exceptions\BadRequestException; |
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use Conlect\ImageIIIF\Exceptions\NotImplementedException; |
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use Conlect\ImageIIIF\Validators\Contracts\ValidatorInterface; |
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class SizeValidator extends ValidatorAbstract implements ValidatorInterface |
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{ |
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protected $allow_upscaling; |
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protected $upscale; |
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protected $regex = [ |
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',[0-9]+', |
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'\^,[0-9]+', |
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'[0-9]+,', |
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'\^[0-9]+,', |
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'{!}?[0-9]+,[0-9]+', |
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]; |
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public function __construct($config) |
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{ |
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$this->allow_upscaling = $config['allow_upscaling']; |
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} |
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public function valid($value) |
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{ |
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if ($value === 'max') { |
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return true; |
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} |
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if ($value === '^max') { |
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throw new NotImplementedException("Maximum size is not implemented."); |
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} |
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if (! $this->allow_upscaling && $this->upscale) { |
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throw new NotImplementedException("Upscaling is not allowed."); |
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} |
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$this->upscale = str_starts_with($value, '^'); |
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$isPercent = str_contains($value, 'pct:'); |
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if ($isPercent) { |
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return $this->isValidPercent($value); |
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} |
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$all_regex = implode('|', $this->regex); |
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if (preg_match('/' . $all_regex . '/', $value)) { |
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return true; |
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} |
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throw new BadRequestException("Size $value is invalid."); |
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} |
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protected function getPercentValue($value) |
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{ |
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if ($this->upscale) { |
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return preg_replace('/^\^pct:/', '', $value); |
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} |
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return preg_replace('/pct:/', '', $value); |
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} |
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protected function isValidPercent($value) |
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{ |
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$percent_value = (int) $this->getPercentValue($value); |
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if ($percent_value < 1 || ($percent_value > 100 && ! $this->upscale)) { |
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throw new BadRequestException("Size $value is invalid."); |
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} |
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return true; |
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} |
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} |
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conlect /
image-iiif
