root / drupal7 / sites / all / libraries / fpdi-1.5.4 / fpdi_pdf_parser.php @ 7fe061e8
1 | 60370e04 | Assos Assos | <?php
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2 | //
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3 | // FPDI - Version 1.5.4
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4 | //
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5 | // Copyright 2004-2015 Setasign - Jan Slabon
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6 | //
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7 | // Licensed under the Apache License, Version 2.0 (the "License");
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8 | // you may not use this file except in compliance with the License.
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9 | // You may obtain a copy of the License at
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10 | //
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11 | // http://www.apache.org/licenses/LICENSE-2.0
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12 | //
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13 | // Unless required by applicable law or agreed to in writing, software
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14 | // distributed under the License is distributed on an "AS IS" BASIS,
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15 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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16 | // See the License for the specific language governing permissions and
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17 | // limitations under the License.
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18 | //
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19 | |||
20 | if (!class_exists('pdf_parser')) { |
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21 | require_once('pdf_parser.php'); |
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22 | } |
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23 | |||
24 | /**
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25 | * Class fpdi_pdf_parser
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26 | */
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27 | class fpdi_pdf_parser extends pdf_parser |
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28 | { |
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29 | /**
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30 | * Pages
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31 | *
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32 | * Index begins at 0
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33 | *
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34 | * @var array
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35 | */
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36 | protected $_pages; |
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37 | |||
38 | /**
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39 | * Page count
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40 | *
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41 | * @var integer
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42 | */
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43 | protected $_pageCount; |
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44 | |||
45 | /**
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46 | * Current page number
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47 | *
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48 | * @var integer
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49 | */
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50 | public $pageNo; |
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51 | |||
52 | /**
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53 | * PDF version of imported document
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54 | *
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55 | * @var string
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56 | */
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57 | public $_pdfVersion; |
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58 | |||
59 | /**
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60 | * Available BoxTypes
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61 | *
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62 | * @var array
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63 | */
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64 | public $availableBoxes = array('/MediaBox', '/CropBox', '/BleedBox', '/TrimBox', '/ArtBox'); |
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65 | |||
66 | /**
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67 | * The constructor.
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68 | *
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69 | * @param string $filename The source filename
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70 | */
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71 | public function __construct($filename) |
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72 | { |
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73 | parent::__construct($filename); |
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74 | |||
75 | // resolve Pages-Dictonary
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76 | $pages = $this->resolveObject($this->_root[1][1]['/Pages']); |
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77 | |||
78 | // Read pages
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79 | $this->_readPages($pages, $this->_pages); |
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80 | |||
81 | // count pages;
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82 | $this->_pageCount = count($this->_pages); |
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83 | } |
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84 | |||
85 | /**
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86 | * Get page count from source file.
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87 | *
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88 | * @return int
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89 | */
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90 | public function getPageCount() |
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91 | { |
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92 | return $this->_pageCount; |
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93 | } |
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94 | |||
95 | /**
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96 | * Set the page number.
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97 | *
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98 | * @param int $pageNo Page number to use
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99 | * @throws InvalidArgumentException
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100 | */
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101 | public function setPageNo($pageNo) |
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102 | { |
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103 | $pageNo = ((int) $pageNo) - 1; |
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104 | |||
105 | if ($pageNo < 0 || $pageNo >= $this->getPageCount()) { |
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106 | throw new InvalidArgumentException('Invalid page number!'); |
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107 | } |
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108 | |||
109 | $this->pageNo = $pageNo; |
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110 | } |
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111 | |||
112 | /**
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113 | * Get page-resources from current page
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114 | *
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115 | * @return array|boolean
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116 | */
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117 | public function getPageResources() |
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118 | { |
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119 | return $this->_getPageResources($this->_pages[$this->pageNo]); |
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120 | } |
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121 | |||
122 | /**
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123 | * Get page-resources from a /Page dictionary.
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124 | *
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125 | * @param array $obj Array of pdf-data
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126 | * @return array|boolean
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127 | */
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128 | protected function _getPageResources($obj) |
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129 | { |
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130 | $obj = $this->resolveObject($obj); |
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131 | |||
132 | // If the current object has a resources
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133 | // dictionary associated with it, we use
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134 | // it. Otherwise, we move back to its
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135 | // parent object.
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136 | if (isset($obj[1][1]['/Resources'])) { |
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137 | $res = $this->resolveObject($obj[1][1]['/Resources']); |
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138 | if ($res[0] == pdf_parser::TYPE_OBJECT) |
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139 | return $res[1]; |
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140 | return $res; |
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141 | } |
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142 | |||
143 | if (!isset($obj[1][1]['/Parent'])) { |
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144 | return false; |
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145 | } |
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146 | |||
147 | $res = $this->_getPageResources($obj[1][1]['/Parent']); |
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148 | if ($res[0] == pdf_parser::TYPE_OBJECT) |
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149 | return $res[1]; |
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150 | return $res; |
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151 | } |
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152 | |||
153 | /**
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154 | * Get content of current page.
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155 | *
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156 | * If /Contents is an array, the streams are concatenated
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157 | *
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158 | * @return string
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159 | */
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160 | public function getContent() |
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161 | { |
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162 | $buffer = ''; |
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163 | |||
164 | if (isset($this->_pages[$this->pageNo][1][1]['/Contents'])) { |
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165 | $contents = $this->_getPageContent($this->_pages[$this->pageNo][1][1]['/Contents']); |
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166 | foreach ($contents AS $tmpContent) { |
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167 | $buffer .= $this->_unFilterStream($tmpContent) . ' '; |
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168 | } |
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169 | } |
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170 | |||
171 | return $buffer; |
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172 | } |
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173 | |||
174 | /**
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175 | * Resolve all content objects.
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176 | *
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177 | * @param array $contentRef
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178 | * @return array
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179 | */
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180 | protected function _getPageContent($contentRef) |
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181 | { |
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182 | $contents = array(); |
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183 | |||
184 | if ($contentRef[0] == pdf_parser::TYPE_OBJREF) { |
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185 | $content = $this->resolveObject($contentRef); |
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186 | if ($content[1][0] == pdf_parser::TYPE_ARRAY) { |
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187 | $contents = $this->_getPageContent($content[1]); |
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188 | } else {
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189 | $contents[] = $content; |
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190 | } |
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191 | } else if ($contentRef[0] == pdf_parser::TYPE_ARRAY) { |
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192 | foreach ($contentRef[1] AS $tmp_content_ref) { |
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193 | $contents = array_merge($contents, $this->_getPageContent($tmp_content_ref)); |
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194 | } |
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195 | } |
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196 | |||
197 | return $contents; |
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198 | } |
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199 | |||
200 | /**
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201 | * Get a boundary box from a page
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202 | *
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203 | * Array format is same as used by FPDF_TPL.
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204 | *
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205 | * @param array $page a /Page dictionary
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206 | * @param string $boxIndex Type of box {see {@link $availableBoxes})
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207 | * @param float Scale factor from user space units to points
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208 | *
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209 | * @return array|boolean
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210 | */
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211 | protected function _getPageBox($page, $boxIndex, $k) |
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212 | { |
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213 | $page = $this->resolveObject($page); |
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214 | $box = null; |
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215 | if (isset($page[1][1][$boxIndex])) { |
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216 | $box = $page[1][1][$boxIndex]; |
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217 | } |
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218 | |||
219 | if (!is_null($box) && $box[0] == pdf_parser::TYPE_OBJREF) { |
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220 | $tmp_box = $this->resolveObject($box); |
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221 | $box = $tmp_box[1]; |
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222 | } |
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223 | |||
224 | if (!is_null($box) && $box[0] == pdf_parser::TYPE_ARRAY) { |
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225 | $b = $box[1]; |
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226 | return array( |
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227 | 'x' => $b[0][1] / $k, |
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228 | 'y' => $b[1][1] / $k, |
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229 | 'w' => abs($b[0][1] - $b[2][1]) / $k, |
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230 | 'h' => abs($b[1][1] - $b[3][1]) / $k, |
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231 | 'llx' => min($b[0][1], $b[2][1]) / $k, |
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232 | 'lly' => min($b[1][1], $b[3][1]) / $k, |
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233 | 'urx' => max($b[0][1], $b[2][1]) / $k, |
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234 | 'ury' => max($b[1][1], $b[3][1]) / $k, |
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235 | ); |
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236 | } else if (!isset($page[1][1]['/Parent'])) { |
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237 | return false; |
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238 | } else {
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239 | return $this->_getPageBox($this->resolveObject($page[1][1]['/Parent']), $boxIndex, $k); |
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240 | } |
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241 | } |
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242 | |||
243 | /**
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244 | * Get all page boundary boxes by page number
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245 | *
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246 | * @param int $pageNo The page number
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247 | * @param float $k Scale factor from user space units to points
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248 | * @return array
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249 | * @throws InvalidArgumentException
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250 | */
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251 | public function getPageBoxes($pageNo, $k) |
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252 | { |
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253 | if (!isset($this->_pages[$pageNo - 1])) { |
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254 | throw new InvalidArgumentException('Page ' . $pageNo . ' does not exists.'); |
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255 | } |
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256 | |||
257 | return $this->_getPageBoxes($this->_pages[$pageNo - 1], $k); |
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258 | } |
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259 | |||
260 | /**
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261 | * Get all boxes from /Page dictionary
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262 | *
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263 | * @param array $page A /Page dictionary
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264 | * @param float $k Scale factor from user space units to points
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265 | * @return array
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266 | */
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267 | protected function _getPageBoxes($page, $k) |
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268 | { |
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269 | $boxes = array(); |
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270 | |||
271 | foreach($this->availableBoxes AS $box) { |
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272 | if ($_box = $this->_getPageBox($page, $box, $k)) { |
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273 | $boxes[$box] = $_box; |
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274 | } |
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275 | } |
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276 | |||
277 | return $boxes; |
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278 | } |
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279 | |||
280 | /**
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281 | * Get the page rotation by page number
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282 | *
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283 | * @param integer $pageNo
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284 | * @throws InvalidArgumentException
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285 | * @return array
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286 | */
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287 | public function getPageRotation($pageNo) |
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288 | { |
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289 | if (!isset($this->_pages[$pageNo - 1])) { |
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290 | throw new InvalidArgumentException('Page ' . $pageNo . ' does not exists.'); |
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291 | } |
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292 | |||
293 | return $this->_getPageRotation($this->_pages[$pageNo - 1]); |
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294 | } |
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295 | |||
296 | /**
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297 | * Get the rotation value of a page
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298 | *
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299 | * @param array $obj A /Page dictionary
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300 | * @return array|bool
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301 | */
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302 | protected function _getPageRotation($obj) |
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303 | { |
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304 | $obj = $this->resolveObject($obj); |
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305 | if (isset($obj[1][1]['/Rotate'])) { |
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306 | $res = $this->resolveObject($obj[1][1]['/Rotate']); |
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307 | if ($res[0] == pdf_parser::TYPE_OBJECT) |
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308 | return $res[1]; |
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309 | return $res; |
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310 | } |
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311 | |||
312 | if (!isset($obj[1][1]['/Parent'])) { |
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313 | return false; |
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314 | } |
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315 | |||
316 | $res = $this->_getPageRotation($obj[1][1]['/Parent']); |
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317 | if ($res[0] == pdf_parser::TYPE_OBJECT) |
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318 | return $res[1]; |
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319 | |||
320 | return $res; |
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321 | } |
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322 | |||
323 | /**
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324 | * Read all pages
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325 | *
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326 | * @param array $pages /Pages dictionary
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327 | * @param array $result The result array
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328 | * @throws Exception
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329 | */
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330 | protected function _readPages(&$pages, &$result) |
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331 | { |
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332 | // Get the kids dictionary
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333 | $_kids = $this->resolveObject($pages[1][1]['/Kids']); |
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334 | |||
335 | if (!is_array($_kids)) { |
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336 | throw new Exception('Cannot find /Kids in current /Page-Dictionary'); |
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337 | } |
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338 | |||
339 | if ($_kids[0] === self::TYPE_OBJECT) { |
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340 | $_kids = $_kids[1]; |
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341 | } |
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342 | |||
343 | $kids = $_kids[1]; |
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344 | |||
345 | foreach ($kids as $v) { |
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346 | $pg = $this->resolveObject($v); |
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347 | if ($pg[1][1]['/Type'][1] === '/Pages') { |
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348 | // If one of the kids is an embedded
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349 | // /Pages array, resolve it as well.
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350 | $this->_readPages($pg, $result); |
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351 | } else {
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352 | $result[] = $pg; |
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353 | } |
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354 | } |
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355 | } |
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356 | } |