root / drupal7 / sites / all / libraries / fpdi-1.5.4 / fpdi_bridge.php @ a1cafe7e
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<?php
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//
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// FPDI - Version 1.5.4
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//
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// Copyright 2004-2015 Setasign - Jan Slabon
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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/**
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* This file is used as a bridge between TCPDF or FPDF
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* It will dynamically create the class extending the available
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* class FPDF or TCPDF.
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*
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* This way it is possible to use FPDI for both FPDF and TCPDF with one FPDI version.
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*/
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if (!class_exists('TCPDF', false)) { |
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/**
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* Class fpdi_bridge
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*/
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class fpdi_bridge extends FPDF |
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{
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// empty body
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} |
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} else {
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/**
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* Class fpdi_bridge
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*/
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class fpdi_bridge extends TCPDF |
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{
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/**
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* Array of Tpl-Data
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*
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* @var array
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*/
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protected $_tpls = array(); |
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/**
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* Name-prefix of Templates used in Resources-Dictionary
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*
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* @var string A String defining the Prefix used as Template-Object-Names. Have to begin with an /
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*/
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public $tplPrefix = "/TPL"; |
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/**
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* Current Object Id.
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*
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* @var integer
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*/
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protected $_currentObjId; |
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/**
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* Return XObjects Dictionary.
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*
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* Overwritten to add additional XObjects to the resources dictionary of TCPDF
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*
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* @return string
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*/
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protected function _getxobjectdict() |
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{
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$out = parent::_getxobjectdict(); |
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foreach ($this->_tpls as $tplIdx => $tpl) { |
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$out .= sprintf('%s%d %d 0 R', $this->tplPrefix, $tplIdx, $tpl['n']); |
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} |
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return $out; |
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} |
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/**
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* Writes a PDF value to the resulting document.
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*
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* Prepares the value for encryption of imported data by FPDI
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*
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* @param array $value
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*/
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protected function _prepareValue(&$value) |
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{
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switch ($value[0]) { |
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case pdf_parser::TYPE_STRING: |
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if ($this->encrypted) { |
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$value[1] = $this->_unescape($value[1]); |
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$value[1] = $this->_encrypt_data($this->_currentObjId, $value[1]); |
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$value[1] = TCPDF_STATIC::_escape($value[1]); |
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} |
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break;
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case pdf_parser::TYPE_STREAM: |
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if ($this->encrypted) { |
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$value[2][1] = $this->_encrypt_data($this->_currentObjId, $value[2][1]); |
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$value[1][1]['/Length'] = array( |
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pdf_parser::TYPE_NUMERIC,
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strlen($value[2][1]) |
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); |
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} |
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break;
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case pdf_parser::TYPE_HEX: |
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if ($this->encrypted) { |
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$value[1] = $this->hex2str($value[1]); |
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$value[1] = $this->_encrypt_data($this->_currentObjId, $value[1]); |
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// remake hexstring of encrypted string
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$value[1] = $this->str2hex($value[1]); |
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} |
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break;
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} |
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} |
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/**
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* Un-escapes a PDF string
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*
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* @param string $s
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* @return string
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*/
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protected function _unescape($s) |
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{
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$out = ''; |
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for ($count = 0, $n = strlen($s); $count < $n; $count++) { |
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if ($s[$count] != '\\' || $count == $n-1) { |
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$out .= $s[$count]; |
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} else {
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switch ($s[++$count]) { |
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case ')': |
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case '(': |
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case '\\': |
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$out .= $s[$count]; |
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break;
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case 'f': |
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$out .= chr(0x0C); |
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break;
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case 'b': |
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$out .= chr(0x08); |
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break;
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case 't': |
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$out .= chr(0x09); |
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break;
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case 'r': |
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$out .= chr(0x0D); |
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break;
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case 'n': |
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$out .= chr(0x0A); |
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break;
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case "\r": |
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if ($count != $n-1 && $s[$count+1] == "\n") |
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$count++;
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break;
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case "\n": |
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break;
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default:
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// Octal-Values
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if (ord($s[$count]) >= ord('0') && |
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ord($s[$count]) <= ord('9')) { |
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$oct = ''. $s[$count]; |
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if (ord($s[$count+1]) >= ord('0') && |
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ord($s[$count+1]) <= ord('9')) { |
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$oct .= $s[++$count]; |
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if (ord($s[$count+1]) >= ord('0') && |
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ord($s[$count+1]) <= ord('9')) { |
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$oct .= $s[++$count]; |
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} |
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} |
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$out .= chr(octdec($oct)); |
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} else {
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$out .= $s[$count]; |
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} |
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} |
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} |
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} |
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return $out; |
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} |
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/**
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* Hexadecimal to string
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*
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* @param string $data
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* @return string
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*/
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public function hex2str($data) |
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{
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$data = preg_replace('/[^0-9A-Fa-f]/', '', rtrim($data, '>')); |
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if ((strlen($data) % 2) == 1) { |
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$data .= '0'; |
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} |
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return pack('H*', $data); |
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} |
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/**
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* String to hexadecimal
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*
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* @param string $str
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* @return string
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*/
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public function str2hex($str) |
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{
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return current(unpack('H*', $str)); |
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} |
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} |
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} |