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Diffstat (limited to '')
-rw-r--r-- | vendor/setasign/fpdi/src/PdfParser/Type/PdfDictionary.php | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/vendor/setasign/fpdi/src/PdfParser/Type/PdfDictionary.php b/vendor/setasign/fpdi/src/PdfParser/Type/PdfDictionary.php new file mode 100644 index 0000000..2818842 --- /dev/null +++ b/vendor/setasign/fpdi/src/PdfParser/Type/PdfDictionary.php @@ -0,0 +1,134 @@ +<?php + +/** + * This file is part of FPDI + * + * @package setasign\Fpdi + * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com) + * @license http://opensource.org/licenses/mit-license The MIT License + */ + +namespace setasign\Fpdi\PdfParser\Type; + +use setasign\Fpdi\PdfParser\PdfParser; +use setasign\Fpdi\PdfParser\StreamReader; +use setasign\Fpdi\PdfParser\Tokenizer; + +/** + * Class representing a PDF dictionary object + */ +class PdfDictionary extends PdfType +{ + /** + * Parses a dictionary of the passed tokenizer, stream-reader and parser. + * + * @param Tokenizer $tokenizer + * @param StreamReader $streamReader + * @param PdfParser $parser + * @return bool|self + * @throws PdfTypeException + */ + public static function parse(Tokenizer $tokenizer, StreamReader $streamReader, PdfParser $parser) + { + $entries = []; + + while (true) { + $token = $tokenizer->getNextToken(); + if ($token === '>' && $streamReader->getByte() === '>') { + $streamReader->addOffset(1); + break; + } + + $key = $parser->readValue($token); + if ($key === false) { + return false; + } + + // ensure the first value to be a Name object + if (!($key instanceof PdfName)) { + $lastToken = null; + // ignore all other entries and search for the closing brackets + while (($token = $tokenizer->getNextToken()) !== '>' && $token !== false && $lastToken !== '>') { + $lastToken = $token; + } + + if ($token === false) { + return false; + } + + break; + } + + + $value = $parser->readValue(); + if ($value === false) { + return false; + } + + if ($value instanceof PdfNull) { + continue; + } + + // catch missing value + if ($value instanceof PdfToken && $value->value === '>' && $streamReader->getByte() === '>') { + $streamReader->addOffset(1); + break; + } + + $entries[$key->value] = $value; + } + + $v = new self(); + $v->value = $entries; + + return $v; + } + + /** + * Helper method to create an instance. + * + * @param PdfType[] $entries The keys are the name entries of the dictionary. + * @return self + */ + public static function create(array $entries = []) + { + $v = new self(); + $v->value = $entries; + + return $v; + } + + /** + * Get a value by its key from a dictionary or a default value. + * + * @param mixed $dictionary + * @param string $key + * @param PdfType|null $default + * @return PdfNull|PdfType + * @throws PdfTypeException + */ + public static function get($dictionary, $key, PdfType $default = null) + { + $dictionary = self::ensure($dictionary); + + if (isset($dictionary->value[$key])) { + return $dictionary->value[$key]; + } + + return $default === null + ? new PdfNull() + : $default; + } + + /** + * Ensures that the passed value is a PdfDictionary instance. + * + * @param mixed $dictionary + * @return self + * @throws PdfTypeException + */ + public static function ensure($dictionary) + { + return PdfType::ensureType(self::class, $dictionary, 'Dictionary value expected.'); + } +} |