First commit

sites/all/modules/civicrm/packages/FPDI/fpdi_pdf_parser.php

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+<?php
+//
+//  FPDI - Version 1.5
+//
+//    Copyright 2004-2014 Setasign - Jan Slabon
+//
+//  Licensed under the Apache License, Version 2.0 (the "License");
+//  you may not use this file except in compliance with the License.
+//  You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+//  Unless required by applicable law or agreed to in writing, software
+//  distributed under the License is distributed on an "AS IS" BASIS,
+//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//  See the License for the specific language governing permissions and
+//  limitations under the License.
+//
+
+require_once('pdf_parser.php');
+
+/**
+ * Class fpdi_pdf_parser
+ */
+class fpdi_pdf_parser extends pdf_parser
+{
+    /**
+     * Pages
+     *
+     * Index begins at 0
+     *
+     * @var array
+     */
+    protected $_pages;
+    
+    /**
+     * Page count
+     *
+     * @var integer
+     */
+    protected $_pageCount;
+    
+    /**
+     * Current page number
+     *
+     * @var integer
+     */
+    public $pageNo;
+    
+    /**
+     * PDF version of imported document
+     *
+     * @var string
+     */
+    public $_pdfVersion;
+    
+    /**
+     * Available BoxTypes
+     *
+     * @var array
+     */
+    public $availableBoxes = array('/MediaBox', '/CropBox', '/BleedBox', '/TrimBox', '/ArtBox');
+        
+    /**
+     * The constructor.
+     *
+     * @param string $filename The source filename
+     */
+    public function __construct($filename)
+    {
+        parent::__construct($filename);
+
+        // resolve Pages-Dictonary
+        $pages = $this->resolveObject($this->_root[1][1]['/Pages']);
+
+        // Read pages
+        $this->_readPages($pages, $this->_pages);
+        
+        // count pages;
+        $this->_pageCount = count($this->_pages);
+    }
+    
+    /**
+     * Get page count from source file.
+     *
+     * @return int
+     */
+    public function getPageCount()
+    {
+        return $this->_pageCount;
+    }
+
+    /**
+     * Set the page number.
+     *
+     * @param int $pageNo Page number to use
+     * @throws InvalidArgumentException
+     */
+    public function setPageNo($pageNo)
+    {
+        $pageNo = ((int) $pageNo) - 1;
+
+        if ($pageNo < 0 || $pageNo >= $this->getPageCount()) {
+            throw new InvalidArgumentException('Invalid page number!');
+        }
+
+        $this->pageNo = $pageNo;
+    }
+    
+    /**
+     * Get page-resources from current page
+     *
+     * @return array|boolean
+     */
+    public function getPageResources()
+    {
+        return $this->_getPageResources($this->_pages[$this->pageNo]);
+    }
+    
+    /**
+     * Get page-resources from a /Page dictionary.
+     *
+     * @param array $obj Array of pdf-data
+     * @return array|boolean
+     */
+    protected function _getPageResources($obj)
+    {
+    	$obj = $this->resolveObject($obj);
+
+        // If the current object has a resources
+    	// dictionary associated with it, we use
+    	// it. Otherwise, we move back to its
+    	// parent object.
+        if (isset($obj[1][1]['/Resources'])) {
+    		$res = $this->resolveObject($obj[1][1]['/Resources']);
+    		if ($res[0] == pdf_parser::TYPE_OBJECT)
+                return $res[1];
+            return $res;
+    	}
+
+        if (!isset($obj[1][1]['/Parent'])) {
+            return false;
+        }
+
+        $res = $this->_getPageResources($obj[1][1]['/Parent']);
+        if ($res[0] == pdf_parser::TYPE_OBJECT)
+            return $res[1];
+        return $res;
+    }
+
+    /**
+     * Get content of current page.
+     *
+     * If /Contents is an array, the streams are concatenated
+     *
+     * @return string
+     */
+    public function getContent()
+    {
+        $buffer = '';
+        
+        if (isset($this->_pages[$this->pageNo][1][1]['/Contents'])) {
+            $contents = $this->_getPageContent($this->_pages[$this->pageNo][1][1]['/Contents']);
+            foreach ($contents AS $tmpContent) {
+                $buffer .= $this->_unFilterStream($tmpContent) . ' ';
+            }
+        }
+        
+        return $buffer;
+    }
+
+    /**
+     * Resolve all content objects.
+     *
+     * @param array $contentRef
+     * @return array
+     */
+    protected function _getPageContent($contentRef)
+    {
+        $contents = array();
+        
+        if ($contentRef[0] == pdf_parser::TYPE_OBJREF) {
+            $content = $this->resolveObject($contentRef);
+            if ($content[1][0] == pdf_parser::TYPE_ARRAY) {
+                $contents = $this->_getPageContent($content[1]);
+            } else {
+                $contents[] = $content;
+            }
+        } else if ($contentRef[0] == pdf_parser::TYPE_ARRAY) {
+            foreach ($contentRef[1] AS $tmp_content_ref) {
+                $contents = array_merge($contents, $this->_getPageContent($tmp_content_ref));
+            }
+        }
+
+        return $contents;
+    }
+
+    /**
+     * Get a boundary box from a page
+     *
+     * Array format is same as used by FPDF_TPL.
+     *
+     * @param array $page a /Page dictionary
+     * @param string $boxIndex Type of box {see {@link $availableBoxes})
+     * @param float Scale factor from user space units to points
+     *
+     * @return array|boolean
+     */
+    protected function _getPageBox($page, $boxIndex, $k)
+    {
+        $page = $this->resolveObject($page);
+        $box = null;
+        if (isset($page[1][1][$boxIndex])) {
+            $box = $page[1][1][$boxIndex];
+        }
+        
+        if (!is_null($box) && $box[0] == pdf_parser::TYPE_OBJREF) {
+            $tmp_box = $this->resolveObject($box);
+            $box = $tmp_box[1];
+        }
+            
+        if (!is_null($box) && $box[0] == pdf_parser::TYPE_ARRAY) {
+            $b = $box[1];
+            return array(
+                'x' => $b[0][1] / $k,
+                'y' => $b[1][1] / $k,
+                'w' => abs($b[0][1] - $b[2][1]) / $k,
+                'h' => abs($b[1][1] - $b[3][1]) / $k,
+                'llx' => min($b[0][1], $b[2][1]) / $k,
+                'lly' => min($b[1][1], $b[3][1]) / $k,
+                'urx' => max($b[0][1], $b[2][1]) / $k,
+                'ury' => max($b[1][1], $b[3][1]) / $k,
+            );
+        } else if (!isset($page[1][1]['/Parent'])) {
+            return false;
+        } else {
+            return $this->_getPageBox($this->resolveObject($page[1][1]['/Parent']), $boxIndex, $k);
+        }
+    }
+
+    /**
+     * Get all page boundary boxes by page number
+     * 
+     * @param int $pageNo The page number
+     * @param float $k Scale factor from user space units to points
+     * @return array
+     * @throws InvalidArgumentException
+     */
+    public function getPageBoxes($pageNo, $k)
+    {
+        if (!isset($this->_pages[$pageNo - 1])) {
+            throw new InvalidArgumentException('Page ' . $pageNo . ' does not exists.');
+        }
+
+        return $this->_getPageBoxes($this->_pages[$pageNo - 1], $k);
+    }
+    
+    /**
+     * Get all boxes from /Page dictionary
+     *
+     * @param array $page A /Page dictionary
+     * @param float $k Scale factor from user space units to points
+     * @return array
+     */
+    protected function _getPageBoxes($page, $k)
+    {
+        $boxes = array();
+
+        foreach($this->availableBoxes AS $box) {
+            if ($_box = $this->_getPageBox($page, $box, $k)) {
+                $boxes[$box] = $_box;
+            }
+        }
+
+        return $boxes;
+    }
+
+    /**
+     * Get the page rotation by page number
+     *
+     * @param integer $pageNo
+     * @throws InvalidArgumentException
+     * @return array
+     */
+    public function getPageRotation($pageNo)
+    {
+        if (!isset($this->_pages[$pageNo - 1])) {
+            throw new InvalidArgumentException('Page ' . $pageNo . ' does not exists.');
+        }
+
+        return $this->_getPageRotation($this->_pages[$pageNo - 1]);
+    }
+
+    /**
+     * Get the rotation value of a page
+     *
+     * @param array $obj A /Page dictionary
+     * @return array|bool
+     */
+    protected function _getPageRotation($obj)
+    {
+    	$obj = $this->resolveObject($obj);
+    	if (isset($obj[1][1]['/Rotate'])) {
+    		$res = $this->resolveObject($obj[1][1]['/Rotate']);
+    		if ($res[0] == pdf_parser::TYPE_OBJECT)
+                return $res[1];
+            return $res;
+    	}
+
+        if (!isset($obj[1][1]['/Parent'])) {
+            return false;
+        }
+
+        $res = $this->_getPageRotation($obj[1][1]['/Parent']);
+        if ($res[0] == pdf_parser::TYPE_OBJECT)
+            return $res[1];
+
+        return $res;
+    }
+
+    /**
+     * Read all pages
+     *
+     * @param array $pages /Pages dictionary
+     * @param array $result The result array
+     * @throws Exception
+     */
+    protected function _readPages(&$pages, &$result)
+    {
+        // Get the kids dictionary
+    	$_kids = $this->resolveObject($pages[1][1]['/Kids']);
+
+        if (!is_array($_kids)) {
+            throw new Exception('Cannot find /Kids in current /Page-Dictionary');
+        }
+
+        if ($_kids[0] === self::TYPE_OBJECT) {
+            $_kids =  $_kids[1];
+        }
+
+        $kids = $_kids[1];
+
+        foreach ($kids as $v) {
+    		$pg = $this->resolveObject($v);
+            if ($pg[1][1]['/Type'][1] === '/Pages') {
+                // If one of the kids is an embedded
+    			// /Pages array, resolve it as well.
+                $this->_readPages($pg, $result);
+    		} else {
+    			$result[] = $pg;
+    		}
+    	}
+    }
+}