/**
* @param $type
* @param $value
* @param $document
*
* @return Element|Header
* @throws \Exception
*/
protected function parseHeaderElement($type, $value, $document)
{
switch ($type) {
case '<<':
return $this->parseHeader($value, $document);
case 'numeric':
return new ElementNumeric($value, $document);
case 'boolean':
return new ElementBoolean($value, $document);
case 'null':
return new ElementNull($value, $document);
case '(':
if ($date = ElementDate::parse('(' . $value . ')', $document)) {
return $date;
} else {
return ElementString::parse('(' . $value . ')', $document);
}
case '<':
return $this->parseHeaderElement('(', ElementHexa::decode($value, $document), $document);
case '/':
return ElementName::parse('/' . $value, $document);
case 'ojbref':
// old mistake in tcpdf parser
// old mistake in tcpdf parser
case 'objref':
return new ElementXRef($value, $document);
case '[':
$values = array();
foreach ($value as $sub_element) {
$sub_type = $sub_element[0];
$sub_value = $sub_element[1];
$values[] = $this->parseHeaderElement($sub_type, $sub_value, $document);
}
return new ElementArray($values, $document);
case 'endstream':
case 'obj':
//I don't know what it means but got my project fixed.
//I don't know what it means but got my project fixed.
case '':
// Nothing to do with.
break;
default:
throw new \Exception('Invalid type: "' . $type . '".');
}
}
public function testParse()
{
// Skipped.
$offset = 0;
$element = \Smalot\PdfParser\Element\ElementName::parse('ABC', null, $offset);
$this->assert->boolean($element)->isEqualTo(false);
$this->assert->integer($offset)->isEqualTo(0);
$offset = 0;
$element = \Smalot\PdfParser\Element\ElementName::parse(' [ /ABC 5 6 ]', null, $offset);
$this->assert->boolean($element)->isEqualTo(false);
$this->assert->integer($offset)->isEqualTo(0);
$offset = 0;
$element = \Smalot\PdfParser\Element\ElementName::parse(' << invalid >>', null, $offset);
$this->assert->boolean($element)->isEqualTo(false);
$this->assert->integer($offset)->isEqualTo(0);
$offset = 0;
$element = \Smalot\PdfParser\Element\ElementName::parse(' / FlateDecode ', null, $offset);
$this->assert->boolean($element)->isEqualTo(false);
$this->assert->integer($offset)->isEqualTo(0);
$offset = 0;
$element = \Smalot\PdfParser\Element\ElementName::parse(' 0 /FlateDecode ', null, $offset);
$this->assert->boolean($element)->isEqualTo(false);
$this->assert->integer($offset)->isEqualTo(0);
$offset = 0;
$element = \Smalot\PdfParser\Element\ElementName::parse(" 0 \n /FlateDecode ", null, $offset);
$this->assert->boolean($element)->isEqualTo(false);
$this->assert->integer($offset)->isEqualTo(0);
// Valid.
$offset = 0;
$element = \Smalot\PdfParser\Element\ElementName::parse(' /FlateDecode ', null, $offset);
$this->assert->string($element->getContent())->isEqualTo('FlateDecode');
$this->assert->integer($offset)->isEqualTo(13);
$offset = 0;
$element = \Smalot\PdfParser\Element\ElementName::parse(' /FlateDecode', null, $offset);
$this->assert->string($element->getContent())->isEqualTo('FlateDecode');
$this->assert->integer($offset)->isEqualTo(13);
$offset = 0;
$element = \Smalot\PdfParser\Element\ElementName::parse('/FlateDecode', null, $offset);
$this->assert->string($element->getContent())->isEqualTo('FlateDecode');
$this->assert->integer($offset)->isEqualTo(12);
$offset = 0;
$element = \Smalot\PdfParser\Element\ElementName::parse(" \n /FlateDecode ", null, $offset);
$this->assert->string($element->getContent())->isEqualTo('FlateDecode');
$this->assert->integer($offset)->isEqualTo(15);
$offset = 0;
$element = \Smalot\PdfParser\Element\ElementName::parse('/FlateDecode2', null, $offset);
$this->assert->string($element->getContent())->isEqualTo('FlateDecode2');
$this->assert->integer($offset)->isEqualTo(13);
$offset = 0;
$element = \Smalot\PdfParser\Element\ElementName::parse('/Flate-Decode2', null, $offset);
$this->assert->string($element->getContent())->isEqualTo('Flate-Decode2');
$this->assert->integer($offset)->isEqualTo(14);
$offset = 0;
$element = \Smalot\PdfParser\Element\ElementName::parse('/OJHCYD+Cambria', null, $offset);
$this->assert->string($element->getContent())->isEqualTo('OJHCYD+Cambria');
$this->assert->integer($offset)->isEqualTo(15);
$offset = 0;
$element = \Smalot\PdfParser\Element\ElementName::parse('/OJHCYD+Cambria,Bold', null, $offset);
$this->assert->string($element->getContent())->isEqualTo('OJHCYD+Cambria,Bold');
$this->assert->integer($offset)->isEqualTo(20);
//
$offset = 0;
$element = \Smalot\PdfParser\Element\ElementName::parse('/Flate_Decode2', null, $offset);
$this->assert->string($element->getContent())->isEqualTo('Flate');
$this->assert->integer($offset)->isEqualTo(6);
$offset = 0;
$element = \Smalot\PdfParser\Element\ElementName::parse('/Flate.Decode2', null, $offset);
$this->assert->string($element->getContent())->isEqualTo('Flate.Decode2');
$this->assert->integer($offset)->isEqualTo(14);
}
/**
* @param string $content
* @param Document $document
* @param int $position
*
* @return array
* @throws \Exception
*/
public static function parse($content, Document $document = null, &$position = 0)
{
$args = func_get_args();
$only_values = isset($args[3]) ? $args[3] : false;
$content = trim($content);
$values = array();
do {
$old_position = $position;
if (!$only_values) {
if (!preg_match('/^\\s*(?P<name>\\/[A-Z0-9\\._]+)(?P<value>.*)/si', substr($content, $position), $match)) {
break;
} else {
$name = ltrim($match['name'], '/');
$value = $match['value'];
$position = strpos($content, $value, $position + strlen($match['name']));
}
} else {
$name = count($values);
$value = substr($content, $position);
}
if ($element = ElementName::parse($value, $document, $position)) {
$values[$name] = $element;
} elseif ($element = ElementXRef::parse($value, $document, $position)) {
$values[$name] = $element;
} elseif ($element = ElementNumeric::parse($value, $document, $position)) {
$values[$name] = $element;
} elseif ($element = ElementStruct::parse($value, $document, $position)) {
$values[$name] = $element;
} elseif ($element = ElementBoolean::parse($value, $document, $position)) {
$values[$name] = $element;
} elseif ($element = ElementNull::parse($value, $document, $position)) {
$values[$name] = $element;
} elseif ($element = ElementDate::parse($value, $document, $position)) {
$values[$name] = $element;
} elseif ($element = ElementString::parse($value, $document, $position)) {
$values[$name] = $element;
} elseif ($element = ElementHexa::parse($value, $document, $position)) {
$values[$name] = $element;
} elseif ($element = ElementArray::parse($value, $document, $position)) {
$values[$name] = $element;
} else {
$position = $old_position;
break;
}
} while ($position < strlen($content));
return $values;
}
