mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/PdfHandler
synced 2024-11-24 08:14:37 +00:00
0bb4efcb80
* require PHP 5.1.3 (for SimpleXMLElement::addChild()) * Properly escape the filename before passing it to the shell * arrays created by explode() start at 0
106 lines
2.8 KiB
PHP
106 lines
2.8 KiB
PHP
<?php
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/**
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*
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* Copyright (C) 2007 Xarax <jodeldi@gmx.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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* http://www.gnu.org/copyleft/gpl.html
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*
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*/
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/**
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* inspired by djvuimage from brion vibber
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* modified and written by xarax
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*/
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class PdfImage {
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function __construct( $filename ) {
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wfUsePHP( '5.1.3' ); // SimpleXMLElement::addChild() was added only then
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$this->mFilename = $filename;
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}
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public function isValid() {
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return true;
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}
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public function getImageSize() {
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global $wgPdfHandlerDpi;
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$tree = new SimpleXMLElement( $this->retrieveMetadata( ) );
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if ( !$tree ) return false;
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$o = $tree->BODY[0]->Pagesize;
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if ( $o ) {
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$size = explode("x", $o, 2);
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if ( $size ) {
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$width = intval( round( trim($size[0]) / 72 * $wgPdfHandlerDpi ) );
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$height = explode( " ", trim($size[1]), 2 );
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$height = intval( round( trim($height[0]) / 72 * $wgPdfHandlerDpi ) );
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return array( $width, $height, 'Pdf',
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"width=\"$width\" height=\"$height\"" );
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}
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}
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return false;
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}
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function retrieveMetaData() {
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global $wgPdfInfo;
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if ( $wgPdfInfo ) {
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wfProfileIn( 'pdfinfo' );
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$cmd = wfEscapeShellArg( $wgPdfInfo ) . " " . wfEscapeShellArg( $this->mFilename );
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$dump = wfShellExec( $cmd, $retval );
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$xml = $this->convertDumpToXML( $dump );
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wfProfileOut( 'pdfinfo' );
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} else {
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$xml = null;
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}
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return $xml;
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}
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function createMetadataBody() {
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$xml = "<?xml version=\"1.0\" ?>\n";
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$xml .= "<!DOCTYPE PdfXML PUBLIC \"-//W3C//DTD PdfXML 1.1//EN\" \"pubtext/PdfXML-s.dtd\">\n";
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$xml .= "<PdfXML>\n";
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$xml .= "<HEAD></HEAD>\n";
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$xml .= "<BODY>\n";
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$xml .= "</BODY></PdfXML>";
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return $xml;
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}
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function convertDumpToXML( $dump ) {
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if ( strval( $dump ) == '' ) return false;
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$xml = $this->createMetadataBody();
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$doc = new SimpleXMLElement($xml);
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if (!$doc) return;
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$lines = explode("\n", $dump);
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for ($i = 0; $i < count($lines); $i++) {
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$value = explode(':', trim($lines[$i]), 2);
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$doc->BODY[0]->addChild(str_replace(' ', '', $value[0]), trim($value[1]));
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}
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return $doc->asXML();
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}
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}
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