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schwaral
2022-11-25 07:07:16 +01:00
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standort/prints/fpdi_bridge.php Normal file
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<?php
/**
* This file is part of FPDI
*
* @package FPDI
* @copyright Copyright (c) 2015 Setasign - Jan Slabon (http://www.setasign.com)
* @license http://opensource.org/licenses/mit-license The MIT License
* @version 1.6.1
*/
/**
* This file is used as a bridge between TCPDF or FPDF
* It will dynamically create the class extending the available
* class FPDF or TCPDF.
*
* This way it is possible to use FPDI for both FPDF and TCPDF with one FPDI version.
*/
require_once("fpdf.php");
require_once("class.fpdf_table.php");
if (!class_exists('TCPDF', false)) {
/**
* Class fpdi_bridge
*/
class fpdi_bridge extends FPDF_TABLE
{
// empty body
}
} else {
/**
* Class fpdi_bridge
*/
class fpdi_bridge extends TCPDF
{
/**
* Array of Tpl-Data
*
* @var array
*/
protected $_tpls = array();
/**
* Name-prefix of Templates used in Resources-Dictionary
*
* @var string A String defining the Prefix used as Template-Object-Names. Have to begin with an /
*/
public $tplPrefix = "/TPL";
/**
* Current Object Id.
*
* @var integer
*/
protected $_currentObjId;
/**
* Return XObjects Dictionary.
*
* Overwritten to add additional XObjects to the resources dictionary of TCPDF
*
* @return string
*/
protected function _getxobjectdict()
{
$out = parent::_getxobjectdict();
foreach ($this->_tpls as $tplIdx => $tpl) {
$out .= sprintf('%s%d %d 0 R', $this->tplPrefix, $tplIdx, $tpl['n']);
}
return $out;
}
/**
* Writes a PDF value to the resulting document.
*
* Prepares the value for encryption of imported data by FPDI
*
* @param array $value
*/
protected function _prepareValue(&$value)
{
switch ($value[0]) {
case pdf_parser::TYPE_STRING:
if ($this->encrypted) {
$value[1] = $this->_unescape($value[1]);
$value[1] = $this->_encrypt_data($this->_currentObjId, $value[1]);
$value[1] = TCPDF_STATIC::_escape($value[1]);
}
break;
case pdf_parser::TYPE_STREAM:
if ($this->encrypted) {
$value[2][1] = $this->_encrypt_data($this->_currentObjId, $value[2][1]);
$value[1][1]['/Length'] = array(
pdf_parser::TYPE_NUMERIC,
strlen($value[2][1])
);
}
break;
case pdf_parser::TYPE_HEX:
if ($this->encrypted) {
$value[1] = $this->hex2str($value[1]);
$value[1] = $this->_encrypt_data($this->_currentObjId, $value[1]);
// remake hexstring of encrypted string
$value[1] = $this->str2hex($value[1]);
}
break;
}
}
/**
* Un-escapes a PDF string
*
* @param string $s
* @return string
*/
protected function _unescape($s)
{
$out = '';
for ($count = 0, $n = strlen($s); $count < $n; $count++) {
if ($s[$count] != '\\' || $count == $n-1) {
$out .= $s[$count];
} else {
switch ($s[++$count]) {
case ')':
case '(':
case '\\':
$out .= $s[$count];
break;
case 'f':
$out .= chr(0x0C);
break;
case 'b':
$out .= chr(0x08);
break;
case 't':
$out .= chr(0x09);
break;
case 'r':
$out .= chr(0x0D);
break;
case 'n':
$out .= chr(0x0A);
break;
case "\r":
if ($count != $n-1 && $s[$count+1] == "\n")
$count++;
break;
case "\n":
break;
default:
// Octal-Values
if (ord($s[$count]) >= ord('0') &&
ord($s[$count]) <= ord('9')) {
$oct = ''. $s[$count];
if (ord($s[$count+1]) >= ord('0') &&
ord($s[$count+1]) <= ord('9')) {
$oct .= $s[++$count];
if (ord($s[$count+1]) >= ord('0') &&
ord($s[$count+1]) <= ord('9')) {
$oct .= $s[++$count];
}
}
$out .= chr(octdec($oct));
} else {
$out .= $s[$count];
}
}
}
}
return $out;
}
/**
* Hexadecimal to string
*
* @param string $data
* @return string
*/
public function hex2str($data)
{
$data = preg_replace('/[^0-9A-Fa-f]/', '', rtrim($data, '>'));
if ((strlen($data) % 2) == 1) {
$data .= '0';
}
return pack('H*', $data);
}
/**
* String to hexadecimal
*
* @param string $str
* @return string
*/
public function str2hex($str)
{
return current(unpack('H*', $str));
}
}
}