root / drupal7 / sites / all / libraries / fpdi-1.5.4 / fpdi_bridge.php @ b75b6b8b
| 1 |
<?php
|
|---|---|
| 2 |
//
|
| 3 |
// FPDI - Version 1.5.4
|
| 4 |
//
|
| 5 |
// Copyright 2004-2015 Setasign - Jan Slabon
|
| 6 |
//
|
| 7 |
// Licensed under the Apache License, Version 2.0 (the "License");
|
| 8 |
// you may not use this file except in compliance with the License.
|
| 9 |
// You may obtain a copy of the License at
|
| 10 |
//
|
| 11 |
// http://www.apache.org/licenses/LICENSE-2.0
|
| 12 |
//
|
| 13 |
// Unless required by applicable law or agreed to in writing, software
|
| 14 |
// distributed under the License is distributed on an "AS IS" BASIS,
|
| 15 |
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
| 16 |
// See the License for the specific language governing permissions and
|
| 17 |
// limitations under the License.
|
| 18 |
//
|
| 19 |
|
| 20 |
/**
|
| 21 |
* This file is used as a bridge between TCPDF or FPDF
|
| 22 |
* It will dynamically create the class extending the available
|
| 23 |
* class FPDF or TCPDF.
|
| 24 |
*
|
| 25 |
* This way it is possible to use FPDI for both FPDF and TCPDF with one FPDI version.
|
| 26 |
*/
|
| 27 |
|
| 28 |
if (!class_exists('TCPDF', false)) { |
| 29 |
/**
|
| 30 |
* Class fpdi_bridge
|
| 31 |
*/
|
| 32 |
class fpdi_bridge extends FPDF |
| 33 |
{
|
| 34 |
// empty body
|
| 35 |
} |
| 36 |
|
| 37 |
} else {
|
| 38 |
|
| 39 |
/**
|
| 40 |
* Class fpdi_bridge
|
| 41 |
*/
|
| 42 |
class fpdi_bridge extends TCPDF |
| 43 |
{
|
| 44 |
/**
|
| 45 |
* Array of Tpl-Data
|
| 46 |
*
|
| 47 |
* @var array
|
| 48 |
*/
|
| 49 |
protected $_tpls = array(); |
| 50 |
|
| 51 |
/**
|
| 52 |
* Name-prefix of Templates used in Resources-Dictionary
|
| 53 |
*
|
| 54 |
* @var string A String defining the Prefix used as Template-Object-Names. Have to begin with an /
|
| 55 |
*/
|
| 56 |
public $tplPrefix = "/TPL"; |
| 57 |
|
| 58 |
/**
|
| 59 |
* Current Object Id.
|
| 60 |
*
|
| 61 |
* @var integer
|
| 62 |
*/
|
| 63 |
protected $_currentObjId; |
| 64 |
|
| 65 |
/**
|
| 66 |
* Return XObjects Dictionary.
|
| 67 |
*
|
| 68 |
* Overwritten to add additional XObjects to the resources dictionary of TCPDF
|
| 69 |
*
|
| 70 |
* @return string
|
| 71 |
*/
|
| 72 |
protected function _getxobjectdict() |
| 73 |
{
|
| 74 |
$out = parent::_getxobjectdict(); |
| 75 |
foreach ($this->_tpls as $tplIdx => $tpl) { |
| 76 |
$out .= sprintf('%s%d %d 0 R', $this->tplPrefix, $tplIdx, $tpl['n']); |
| 77 |
} |
| 78 |
|
| 79 |
return $out; |
| 80 |
} |
| 81 |
|
| 82 |
/**
|
| 83 |
* Writes a PDF value to the resulting document.
|
| 84 |
*
|
| 85 |
* Prepares the value for encryption of imported data by FPDI
|
| 86 |
*
|
| 87 |
* @param array $value
|
| 88 |
*/
|
| 89 |
protected function _prepareValue(&$value) |
| 90 |
{
|
| 91 |
switch ($value[0]) { |
| 92 |
case pdf_parser::TYPE_STRING: |
| 93 |
if ($this->encrypted) { |
| 94 |
$value[1] = $this->_unescape($value[1]); |
| 95 |
$value[1] = $this->_encrypt_data($this->_currentObjId, $value[1]); |
| 96 |
$value[1] = TCPDF_STATIC::_escape($value[1]); |
| 97 |
} |
| 98 |
break;
|
| 99 |
|
| 100 |
case pdf_parser::TYPE_STREAM: |
| 101 |
if ($this->encrypted) { |
| 102 |
$value[2][1] = $this->_encrypt_data($this->_currentObjId, $value[2][1]); |
| 103 |
$value[1][1]['/Length'] = array( |
| 104 |
pdf_parser::TYPE_NUMERIC,
|
| 105 |
strlen($value[2][1]) |
| 106 |
); |
| 107 |
} |
| 108 |
break;
|
| 109 |
|
| 110 |
case pdf_parser::TYPE_HEX: |
| 111 |
if ($this->encrypted) { |
| 112 |
$value[1] = $this->hex2str($value[1]); |
| 113 |
$value[1] = $this->_encrypt_data($this->_currentObjId, $value[1]); |
| 114 |
|
| 115 |
// remake hexstring of encrypted string
|
| 116 |
$value[1] = $this->str2hex($value[1]); |
| 117 |
} |
| 118 |
break;
|
| 119 |
} |
| 120 |
} |
| 121 |
|
| 122 |
/**
|
| 123 |
* Un-escapes a PDF string
|
| 124 |
*
|
| 125 |
* @param string $s
|
| 126 |
* @return string
|
| 127 |
*/
|
| 128 |
protected function _unescape($s) |
| 129 |
{
|
| 130 |
$out = ''; |
| 131 |
for ($count = 0, $n = strlen($s); $count < $n; $count++) { |
| 132 |
if ($s[$count] != '\\' || $count == $n-1) { |
| 133 |
$out .= $s[$count]; |
| 134 |
} else {
|
| 135 |
switch ($s[++$count]) { |
| 136 |
case ')': |
| 137 |
case '(': |
| 138 |
case '\\': |
| 139 |
$out .= $s[$count]; |
| 140 |
break;
|
| 141 |
case 'f': |
| 142 |
$out .= chr(0x0C); |
| 143 |
break;
|
| 144 |
case 'b': |
| 145 |
$out .= chr(0x08); |
| 146 |
break;
|
| 147 |
case 't': |
| 148 |
$out .= chr(0x09); |
| 149 |
break;
|
| 150 |
case 'r': |
| 151 |
$out .= chr(0x0D); |
| 152 |
break;
|
| 153 |
case 'n': |
| 154 |
$out .= chr(0x0A); |
| 155 |
break;
|
| 156 |
case "\r": |
| 157 |
if ($count != $n-1 && $s[$count+1] == "\n") |
| 158 |
$count++;
|
| 159 |
break;
|
| 160 |
case "\n": |
| 161 |
break;
|
| 162 |
default:
|
| 163 |
// Octal-Values
|
| 164 |
if (ord($s[$count]) >= ord('0') && |
| 165 |
ord($s[$count]) <= ord('9')) { |
| 166 |
$oct = ''. $s[$count]; |
| 167 |
|
| 168 |
if (ord($s[$count+1]) >= ord('0') && |
| 169 |
ord($s[$count+1]) <= ord('9')) { |
| 170 |
$oct .= $s[++$count]; |
| 171 |
|
| 172 |
if (ord($s[$count+1]) >= ord('0') && |
| 173 |
ord($s[$count+1]) <= ord('9')) { |
| 174 |
$oct .= $s[++$count]; |
| 175 |
} |
| 176 |
} |
| 177 |
|
| 178 |
$out .= chr(octdec($oct)); |
| 179 |
} else {
|
| 180 |
$out .= $s[$count]; |
| 181 |
} |
| 182 |
} |
| 183 |
} |
| 184 |
} |
| 185 |
return $out; |
| 186 |
} |
| 187 |
|
| 188 |
/**
|
| 189 |
* Hexadecimal to string
|
| 190 |
*
|
| 191 |
* @param string $data
|
| 192 |
* @return string
|
| 193 |
*/
|
| 194 |
public function hex2str($data) |
| 195 |
{
|
| 196 |
$data = preg_replace('/[^0-9A-Fa-f]/', '', rtrim($data, '>')); |
| 197 |
if ((strlen($data) % 2) == 1) { |
| 198 |
$data .= '0'; |
| 199 |
} |
| 200 |
|
| 201 |
return pack('H*', $data); |
| 202 |
} |
| 203 |
|
| 204 |
/**
|
| 205 |
* String to hexadecimal
|
| 206 |
*
|
| 207 |
* @param string $str
|
| 208 |
* @return string
|
| 209 |
*/
|
| 210 |
public function str2hex($str) |
| 211 |
{
|
| 212 |
return current(unpack('H*', $str)); |
| 213 |
} |
| 214 |
} |
| 215 |
} |