|
<?php
|
|
//
|
|
// FPDI - Version 1.2
|
|
//
|
|
// Copyright 2004-2007 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.
|
|
//
|
|
|
|
|
|
class fpdi_pdf_parser extends pdf_parser {
|
|
|
|
/**
|
|
* Pages
|
|
* Index beginns at 0
|
|
*
|
|
* @var array
|
|
*/
|
|
var $pages;
|
|
|
|
/**
|
|
* Page count
|
|
* @var integer
|
|
*/
|
|
var $page_count;
|
|
|
|
/**
|
|
* actual page number
|
|
* @var integer
|
|
*/
|
|
var $pageno;
|
|
|
|
|
|
/**
|
|
* FPDI Reference
|
|
* @var object
|
|
*/
|
|
var $fpdi;
|
|
|
|
/**
|
|
* Available BoxTypes
|
|
*
|
|
* @var array
|
|
*/
|
|
var $availableBoxes = array("/MediaBox","/CropBox","/BleedBox","/TrimBox","/ArtBox");
|
|
|
|
/**
|
|
* Constructor
|
|
*
|
|
* @param string $filename Source-Filename
|
|
* @param object $fpdi Object of type fpdi
|
|
*/
|
|
function fpdi_pdf_parser($filename,&$fpdi) {
|
|
$this->fpdi =& $fpdi;
|
|
$this->filename = $filename;
|
|
|
|
parent::pdf_parser($filename);
|
|
if ($this->success == false) { return false; }
|
|
|
|
// resolve Pages-Dictonary
|
|
$pages = $this->pdf_resolve_object($this->c, $this->root[1][1]['/Pages']);
|
|
if ($this->success == false) { return false; }
|
|
|
|
// Read pages
|
|
$this->read_pages($this->c, $pages, $this->pages);
|
|
if ($this->success == false) { return false; }
|
|
|
|
// count pages;
|
|
$this->page_count = count($this->pages);
|
|
}
|
|
|
|
|
|
/**
|
|
* Get pagecount from sourcefile
|
|
*
|
|
* @return int
|
|
*/
|
|
function getPageCount() {
|
|
return $this->page_count;
|
|
}
|
|
|
|
|
|
/**
|
|
* Set pageno
|
|
*
|
|
* @param int $pageno Pagenumber to use
|
|
*/
|
|
function setPageno($pageno) {
|
|
$pageno = ((int) $pageno) - 1;
|
|
|
|
if ($pageno < 0 || $pageno >= $this->getPageCount()) {
|
|
$this->fpdi->error("Pagenumber is wrong!");
|
|
}
|
|
|
|
$this->pageno = $pageno;
|
|
}
|
|
|
|
/**
|
|
* Get page-resources from current page
|
|
*
|
|
* @return array
|
|
*/
|
|
function getPageResources() {
|
|
return $this->_getPageResources($this->pages[$this->pageno]);
|
|
}
|
|
|
|
/**
|
|
* Get page-resources from /Page
|
|
*
|
|
* @param array $obj Array of pdf-data
|
|
*/
|
|
function _getPageResources ($obj) { // $obj = /Page
|
|
$obj = $this->pdf_resolve_object($this->c, $obj);
|
|
|
|
// If the current object has a resources
|
|
// dictionary associated with it, we use
|
|
// it. Otherwise, we move back to its
|
|
// parent object.
|
|
if (isset ($obj[1][1]['/Resources'])) {
|
|
$res = $this->pdf_resolve_object($this->c, $obj[1][1]['/Resources']);
|
|
if ($res[0] == PDF_TYPE_OBJECT)
|
|
return $res[1];
|
|
return $res;
|
|
} else {
|
|
if (!isset ($obj[1][1]['/Parent'])) {
|
|
return false;
|
|
} else {
|
|
$res = $this->_getPageResources($obj[1][1]['/Parent']);
|
|
if ($res[0] == PDF_TYPE_OBJECT)
|
|
return $res[1];
|
|
return $res;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Get content of current page
|
|
*
|
|
* If more /Contents is an array, the streams are concated
|
|
*
|
|
* @return string
|
|
*/
|
|
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 $tmp_content) {
|
|
$buffer .= $this->_rebuildContentStream($tmp_content).' ';
|
|
}
|
|
}
|
|
|
|
return $buffer;
|
|
}
|
|
|
|
|
|
/**
|
|
* Resolve all content-objects
|
|
*
|
|
* @param array $content_ref
|
|
* @return array
|
|
*/
|
|
function _getPageContent($content_ref) {
|
|
$contents = array();
|
|
|
|
if ($content_ref[0] == PDF_TYPE_OBJREF) {
|
|
$content = $this->pdf_resolve_object($this->c, $content_ref);
|
|
if ($content[1][0] == PDF_TYPE_ARRAY) {
|
|
$contents = $this->_getPageContent($content[1]);
|
|
} else {
|
|
$contents[] = $content;
|
|
}
|
|
} else if ($content_ref[0] == PDF_TYPE_ARRAY) {
|
|
foreach ($content_ref[1] AS $tmp_content_ref) {
|
|
$contents = array_merge($contents,$this->_getPageContent($tmp_content_ref));
|
|
}
|
|
}
|
|
|
|
return $contents;
|
|
}
|
|
|
|
|
|
/**
|
|
* Rebuild content-streams
|
|
*
|
|
* @param array $obj
|
|
* @return string
|
|
*/
|
|
function _rebuildContentStream($obj) {
|
|
$filters = array();
|
|
|
|
if (isset($obj[1][1]['/Filter'])) {
|
|
$_filter = $obj[1][1]['/Filter'];
|
|
|
|
if ($_filter[0] == PDF_TYPE_TOKEN) {
|
|
$filters[] = $_filter;
|
|
} else if ($_filter[0] == PDF_TYPE_ARRAY) {
|
|
$filters = $_filter[1];
|
|
}
|
|
}
|
|
|
|
$stream = $obj[2][1];
|
|
|
|
foreach ($filters AS $_filter) {
|
|
switch ($_filter[1]) {
|
|
case "/FlateDecode":
|
|
if (function_exists('gzuncompress')) {
|
|
$stream = (strlen($stream) > 0) ? @gzuncompress($stream) : '';
|
|
} else {
|
|
$this->fpdi->error(sprintf("To handle %s filter, please compile php with zlib support.",$_filter[1]));
|
|
}
|
|
if ($stream === false) {
|
|
$this->fpdi->error("Error while decompressing stream.");
|
|
}
|
|
break;
|
|
// mPDF 4.2.003
|
|
case '/LZWDecode':
|
|
include_once(_MPDF_PATH.'mpdfi/filters/FilterLZW.php');
|
|
// mPDF 5.0 Removed pass by reference =&
|
|
$decoder = new FilterLZW();
|
|
$stream = $decoder->decode($stream);
|
|
break;
|
|
case '/ASCII85Decode':
|
|
include_once(_MPDF_PATH.'mpdfi/filters/FilterASCII85.php');
|
|
// mPDF 5.0 Removed pass by reference =&
|
|
$decoder = new FilterASCII85();
|
|
$stream = $decoder->decode($stream);
|
|
break;
|
|
case null:
|
|
$stream = $stream;
|
|
break;
|
|
default:
|
|
$this->fpdi->error(sprintf("Unsupported Filter: %s",$_filter[1]));
|
|
}
|
|
}
|
|
|
|
return $stream;
|
|
}
|
|
|
|
|
|
/**
|
|
* Get a Box from a page
|
|
* Arrayformat is same as used by fpdf_tpl
|
|
*
|
|
* @param array $page a /Page
|
|
* @param string $box_index Type of Box @see $availableBoxes
|
|
* @return array
|
|
*/
|
|
function getPageBox($page, $box_index) {
|
|
$page = $this->pdf_resolve_object($this->c,$page);
|
|
$box = null;
|
|
if (isset($page[1][1][$box_index]))
|
|
$box =& $page[1][1][$box_index];
|
|
|
|
if (!is_null($box) && $box[0] == PDF_TYPE_OBJREF) {
|
|
$tmp_box = $this->pdf_resolve_object($this->c,$box);
|
|
$box = $tmp_box[1];
|
|
}
|
|
|
|
if (!is_null($box) && $box[0] == PDF_TYPE_ARRAY) {
|
|
$b =& $box[1];
|
|
return array("x" => $b[0][1]/_MPDFK,
|
|
"y" => $b[1][1]/_MPDFK,
|
|
"w" => abs($b[0][1]-$b[2][1])/_MPDFK,
|
|
"h" => abs($b[1][1]-$b[3][1])/_MPDFK); // mPDF 5.3.90
|
|
} else if (!isset ($page[1][1]['/Parent'])) {
|
|
return false;
|
|
} else {
|
|
return $this->getPageBox($this->pdf_resolve_object($this->c, $page[1][1]['/Parent']), $box_index);
|
|
}
|
|
}
|
|
|
|
function getPageBoxes($pageno) {
|
|
return $this->_getPageBoxes($this->pages[$pageno-1]);
|
|
}
|
|
|
|
/**
|
|
* Get all Boxes from /Page
|
|
*
|
|
* @param array a /Page
|
|
* @return array
|
|
*/
|
|
function _getPageBoxes($page) {
|
|
$boxes = array();
|
|
|
|
foreach($this->availableBoxes AS $box) {
|
|
if ($_box = $this->getPageBox($page,$box)) {
|
|
$boxes[$box] = $_box;
|
|
}
|
|
}
|
|
|
|
return $boxes;
|
|
}
|
|
|
|
function getPageRotation($pageno) {
|
|
return $this->_getPageRotation($this->pages[$pageno-1]);
|
|
}
|
|
|
|
function _getPageRotation ($obj) { // $obj = /Page
|
|
$obj = $this->pdf_resolve_object($this->c, $obj);
|
|
if (isset ($obj[1][1]['/Rotate'])) {
|
|
$res = $this->pdf_resolve_object($this->c, $obj[1][1]['/Rotate']);
|
|
if ($res[0] == PDF_TYPE_OBJECT)
|
|
return $res[1];
|
|
return $res;
|
|
} else {
|
|
if (!isset ($obj[1][1]['/Parent'])) {
|
|
return false;
|
|
} else {
|
|
$res = $this->_getPageRotation($obj[1][1]['/Parent']);
|
|
if ($res[0] == PDF_TYPE_OBJECT)
|
|
return $res[1];
|
|
return $res;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Read all /Page(es)
|
|
*
|
|
* @param object pdf_context
|
|
* @param array /Pages
|
|
* @param array the result-array
|
|
*/
|
|
function read_pages (&$c, &$pages, &$result) {
|
|
// Get the kids dictionary
|
|
$kids = $this->pdf_resolve_object ($c, $pages[1][1]['/Kids']);
|
|
|
|
if (!is_array($kids)) {
|
|
// mPDF 4.0
|
|
$this->success = false;
|
|
$this->errormsg = sprintf("Cannot find /Kids in current /Page-Dictionary");
|
|
return false;
|
|
}
|
|
foreach ($kids[1] as $v) {
|
|
$pg = $this->pdf_resolve_object ($c, $v);
|
|
if ($pg[1][1]['/Type'][1] === '/Pages') {
|
|
// If one of the kids is an embedded
|
|
// /Pages array, resolve it as well.
|
|
$this->read_pages ($c, $pg, $result);
|
|
} else {
|
|
$result[] = $pg;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
}
|
|
|
|
?>
|