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Viewing / Editing File: fpdf.php

<?php
/*******************************************************************************
* FPDF                                                                         *
*                                                                              *
* Version: 1.7                                                                 *
* Date:    2011-06-18                                                          *
* Author:  Olivier PLATHEY                                                     *
*******************************************************************************/

define('FPDF_VERSION','1.7');

class FPDF
{
var $page;               // current page number
var $n;                  // current object number
var $offsets;            // array of object offsets
var $buffer;             // buffer holding in-memory PDF
var $pages;              // array containing pages
var $state;              // current document state
var $compress;           // compression flag
var $k;                  // scale factor (number of points in user unit)
var $DefOrientation;     // default orientation
var $CurOrientation;     // current orientation
var $StdPageSizes;       // standard page sizes
var $DefPageSize;        // default page size
var $CurPageSize;        // current page size
var $PageSizes;          // used for pages with non default sizes or orientations
var $wPt, $hPt;          // dimensions of current page in points
var $w, $h;              // dimensions of current page in user unit
var $lMargin;            // left margin
var $tMargin;            // top margin
var $rMargin;            // right margin
var $bMargin;            // page break margin
var $cMargin;            // cell margin
var $x, $y;              // current position in user unit
var $lasth;              // height of last printed cell
var $LineWidth;          // line width in user unit
var $fontpath;           // path containing fonts
var $CoreFonts;          // array of core font names
var $fonts;              // array of used fonts
var $FontFiles;          // array of font files
var $diffs;              // array of encoding differences
var $FontFamily;         // current font family
var $FontStyle;          // current font style
var $underline;          // underlining flag
var $CurrentFont;        // current font info
var $FontSizePt;         // current font size in points
var $FontSize;           // current font size in user unit
var $DrawColor;          // commands for drawing color
var $FillColor;          // commands for filling color
var $TextColor;          // commands for text color
var $ColorFlag;          // indicates whether fill and text colors are different
var $ws;                 // word spacing
var $images;             // array of used images
var $PageLinks;          // array of links in pages
var $links;              // array of internal links
var $AutoPageBreak;      // automatic page breaking
var $PageBreakTrigger;   // threshold used to trigger page breaks
var $InHeader;           // flag set when processing header
var $InFooter;           // flag set when processing footer
var $ZoomMode;           // zoom display mode
var $LayoutMode;         // layout display mode
var $title;              // title
var $subject;            // subject
var $author;             // author
var $keywords;           // keywords
var $creator;            // creator
var $AliasNbPages;       // alias for total number of pages
var $PDFVersion;         // PDF version number

/*******************************************************************************
*                                                                              *
*                               Public methods                                 *
*                                                                              *
*******************************************************************************/
function FPDF($orientation='P', $unit='mm', $size='A4')
{
	// Some checks
	$this->_dochecks();
	// Initialization of properties
	$this->page = 0;
	$this->n = 2;
	$this->buffer = '';
	$this->pages = array();
	$this->PageSizes = array();
	$this->state = 0;
	$this->fonts = array();
	$this->FontFiles = array();
	$this->diffs = array();
	$this->images = array();
	$this->links = array();
	$this->InHeader = false;
	$this->InFooter = false;
	$this->lasth = 0;
	$this->FontFamily = '';
	$this->FontStyle = '';
	$this->FontSizePt = 12;
	$this->underline = false;
	$this->DrawColor = '0 G';
	$this->FillColor = '0 g';
	$this->TextColor = '0 g';
	$this->ColorFlag = false;
	$this->ws = 0;
	// Font path
	if(defined('FPDF_FONTPATH'))
	{
		$this->fontpath = FPDF_FONTPATH;
		if(substr($this->fontpath,-1)!='/' && substr($this->fontpath,-1)!='\\')
			$this->fontpath .= '/';
	}
	elseif(is_dir(dirname(__FILE__).'/font'))
		$this->fontpath = dirname(__FILE__).'/font/';
	else
		$this->fontpath = '';
	// Core fonts
	$this->CoreFonts = array('courier', 'helvetica', 'times', 'symbol', 'zapfdingbats');
	// Scale factor
	if($unit=='pt')
		$this->k = 1;
	elseif($unit=='mm')
		$this->k = 72/25.4;
	elseif($unit=='cm')
		$this->k = 72/2.54;
	elseif($unit=='in')
		$this->k = 72;
	else
		$this->Error('Incorrect unit: '.$unit);
	// Page sizes
	$this->StdPageSizes = array('a3'=>array(841.89,1190.55), 'a4'=>array(595.28,841.89), 'a5'=>array(420.94,595.28),
		'letter'=>array(612,792), 'legal'=>array(612,1008));
	$size = $this->_getpagesize($size);
	$this->DefPageSize = $size;
	$this->CurPageSize = $size;
	// Page orientation
	$orientation = strtolower($orientation);
	if($orientation=='p' || $orientation=='portrait')
	{
		$this->DefOrientation = 'P';
		$this->w = $size[0];
		$this->h = $size[1];
	}
	elseif($orientation=='l' || $orientation=='landscape')
	{
		$this->DefOrientation = 'L';
		$this->w = $size[1];
		$this->h = $size[0];
	}
	else
		$this->Error('Incorrect orientation: '.$orientation);
	$this->CurOrientation = $this->DefOrientation;
	$this->wPt = $this->w*$this->k;
	$this->hPt = $this->h*$this->k;
	// Page margins (1 cm)
	$margin = 28.35/$this->k;
	$this->SetMargins($margin,$margin);
	// Interior cell margin (1 mm)
	$this->cMargin = $margin/10;
	// Line width (0.2 mm)
	$this->LineWidth = .567/$this->k;
	// Automatic page break
	$this->SetAutoPageBreak(true,2*$margin);
	// Default display mode
	$this->SetDisplayMode('default');
	// Enable compression
	$this->SetCompression(true);
	// Set default PDF version number
	$this->PDFVersion = '1.3';
}

function SetMargins($left, $top, $right=null)
{
	// Set left, top and right margins
	$this->lMargin = $left;
	$this->tMargin = $top;
	if($right===null)
		$right = $left;
	$this->rMargin = $right;
}

function SetLeftMargin($margin)
{
	// Set left margin
	$this->lMargin = $margin;
	if($this->page>0 && $this->x<$margin)
		$this->x = $margin;
}

function SetTopMargin($margin)
{
	// Set top margin
	$this->tMargin = $margin;
}

function SetRightMargin($margin)
{
	// Set right margin
	$this->rMargin = $margin;
}

function SetAutoPageBreak($auto, $margin=0)
{
	// Set auto page break mode and triggering margin
	$this->AutoPageBreak = $auto;
	$this->bMargin = $margin;
	$this->PageBreakTrigger = $this->h-$margin;
}

function SetDisplayMode($zoom, $layout='default')
{
	// Set display mode in viewer
	if($zoom=='fullpage' || $zoom=='fullwidth' || $zoom=='real' || $zoom=='default' || !is_string($zoom))
		$this->ZoomMode = $zoom;
	else
		$this->Error('Incorrect zoom display mode: '.$zoom);
	if($layout=='single' || $layout=='continuous' || $layout=='two' || $layout=='default')
		$this->LayoutMode = $layout;
	else
		$this->Error('Incorrect layout display mode: '.$layout);
}

function SetCompression($compress)
{
	// Set page compression
	if(function_exists('gzcompress'))
		$this->compress = $compress;
	else
		$this->compress = false;
}

function SetTitle($title, $isUTF8=false)
{
	// Title of document
	if($isUTF8)
		$title = $this->_UTF8toUTF16($title);
	$this->title = $title;
}

function SetSubject($subject, $isUTF8=false)
{
	// Subject of document
	if($isUTF8)
		$subject = $this->_UTF8toUTF16($subject);
	$this->subject = $subject;
}

function SetAuthor($author, $isUTF8=false)
{
	// Author of document
	if($isUTF8)
		$author = $this->_UTF8toUTF16($author);
	$this->author = $author;
}

function SetKeywords($keywords, $isUTF8=false)
{
	// Keywords of document
	if($isUTF8)
		$keywords = $this->_UTF8toUTF16($keywords);
	$this->keywords = $keywords;
}

function SetCreator($creator, $isUTF8=false)
{
	// Creator of document
	if($isUTF8)
		$creator = $this->_UTF8toUTF16($creator);
	$this->creator = $creator;
}

function AliasNbPages($alias='{nb}')
{
	// Define an alias for total number of pages
	$this->AliasNbPages = $alias;
}

function Error($msg)
{
	// Fatal error
	die('<b>FPDF error:</b> '.$msg);
}

function Open()
{
	// Begin document
	$this->state = 1;
}

function Close()
{
	// Terminate document
	if($this->state==3)
		return;
	if($this->page==0)
		$this->AddPage();
	// Page footer
	$this->InFooter = true;
	$this->Footer();
	$this->InFooter = false;
	// Close page
	$this->_endpage();
	// Close document
	$this->_enddoc();
}

function Header()
{
	// To be implemented in your own inherited class
}

function Footer()
{
	// To be implemented in your own inherited class
}

function PageNo()
{
	// Get current page number
	return $this->page;
}

function SetDrawColor($r, $g=null, $b=null)
{
	// Set color for all stroking operations
	if(($r==0 && $g==0 && $b==0) || $g===null)
		$this->DrawColor = sprintf('%.3F G',$r/255);
	else
		$this->DrawColor = sprintf('%.3F %.3F %.3F RG',$r/255,$g/255,$b/255);
	if($this->page>0)
		$this->_out($this->DrawColor);
}

function SetFillColor($r, $g=null, $b=null)
{
	// Set color for all filling operations
	if(($r==0 && $g==0 && $b==0) || $g===null)
		$this->FillColor = sprintf('%.3F g',$r/255);
	else
		$this->FillColor = sprintf('%.3F %.3F %.3F rg',$r/255,$g/255,$b/255);
	$this->ColorFlag = ($this->FillColor!=$this->TextColor);
	if($this->page>0)
		$this->_out($this->FillColor);
}

function SetTextColor($r, $g=null, $b=null)
{
	// Set color for text
	if(($r==0 && $g==0 && $b==0) || $g===null)
		$this->TextColor = sprintf('%.3F g',$r/255);
	else
		$this->TextColor = sprintf('%.3F %.3F %.3F rg',$r/255,$g/255,$b/255);
	$this->ColorFlag = ($this->FillColor!=$this->TextColor);
}

function GetStringWidth($s)
{
	// Get width of a string in the current font
	$s = (string)$s;
	$cw = &$this->CurrentFont['cw'];
	$w = 0;
	$l = strlen($s);
	for($i=0;$i<$l;$i++)
		$w += $cw[$s[$i]];
	return $w*$this->FontSize/1000;
}

function SetLineWidth($width)
{
	// Set line width
	$this->LineWidth = $width;
	if($this->page>0)
		$this->_out(sprintf('%.2F w',$width*$this->k));
}

function Line($x1, $y1, $x2, $y2)
{
	// Draw a line
	$this->_out(sprintf('%.2F %.2F m %.2F %.2F l S',$x1*$this->k,($this->h-$y1)*$this->k,$x2*$this->k,($this->h-$y2)*$this->k));
}

function Rect($x, $y, $w, $h, $style='')
{
	// Draw a rectangle
	if($style=='F')
		$op = 'f';
	elseif($style=='FD' || $style=='DF')
		$op = 'B';
	else
		$op = 'S';
	$this->_out(sprintf('%.2F %.2F %.2F %.2F re %s',$x*$this->k,($this->h-$y)*$this->k,$w*$this->k,-$h*$this->k,$op));
}

function SetFontSize($size)
{
	// Set font size in points
	if($this->FontSizePt==$size)
		return;
	$this->FontSizePt = $size;
	$this->FontSize = $size/$this->k;
	if($this->page>0)
		$this->_out(sprintf('BT /F%d %.2F Tf ET',$this->CurrentFont['i'],$this->FontSizePt));
}

function AddLink()
{
	// Create a new internal link
	$n = count($this->links)+1;
	$this->links[$n] = array(0, 0);
	return $n;
}

function SetLink($link, $y=0, $page=-1)
{
	// Set destination of internal link
	if($y==-1)
		$y = $this->y;
	if($page==-1)
		$page = $this->page;
	$this->links[$link] = array($page, $y);
}

function Link($x, $y, $w, $h, $link)
{
	// Put a link on the page
	$this->PageLinks[$this->page][] = array($x*$this->k, $this->hPt-$y*$this->k, $w*$this->k, $h*$this->k, $link);
}

function Text($x, $y, $txt)
{
	// Output a string
	$s = sprintf('BT %.2F %.2F Td (%s) Tj ET',$x*$this->k,($this->h-$y)*$this->k,$this->_escape($txt));
	if($this->underline && $txt!='')
		$s .= ' '.$this->_dounderline($x,$y,$txt);
	if($this->ColorFlag)
		$s = 'q '.$this->TextColor.' '.$s.' Q';
	$this->_out($s);
}

function AcceptPageBreak()
{
	// Accept automatic page break or not
	return $this->AutoPageBreak;
}

function Ln($h=null)
{
	// Line feed; default value is last cell height
	$this->x = $this->lMargin;
	if($h===null)
		$this->y += $this->lasth;
	else
		$this->y += $h;
}

function Image($file, $x=null, $y=null, $w=0, $h=0, $type='', $link='')
{
	// Put an image on the page
	if(!isset($this->images[$file]))
	{
		// First use of this image, get info
		if($type=='')
		{
			$pos = strrpos($file,'.');
			if(!$pos)
				$this->Error('Image file has no extension and no type was specified: '.$file);
			$type = substr($file,$pos+1);
		}
		$type = strtolower($type);
		if($type=='jpeg')
			$type = 'jpg';
		$mtd = '_parse'.$type;
		if(!method_exists($this,$mtd))
			$this->Error('Unsupported image type: '.$type);
		$info = $this->$mtd($file);
		$info['i'] = count($this->images)+1;
		$this->images[$file] = $info;
	}
	else
		$info = $this->images[$file];

// Automatic width and height calculation if needed
	if($w==0 && $h==0)
	{
		// Put image at 96 dpi
		$w = -96;
		$h = -96;
	}
	if($w<0)
		$w = -$info['w']*72/$w/$this->k;
	if($h<0)
		$h = -$info['h']*72/$h/$this->k;
	if($w==0)
		$w = $h*$info['w']/$info['h'];
	if($h==0)
		$h = $w*$info['h']/$info['w'];

// Flowing mode
	if($y===null)
	{
		if($this->y+$h>$this->PageBreakTrigger && !$this->InHeader && !$this->InFooter && $this->AcceptPageBreak())
		{
			// Automatic page break
			$x2 = $this->x;
			$this->AddPage($this->CurOrientation,$this->CurPageSize);
			$this->x = $x2;
		}
		$y = $this->y;
		$this->y += $h;
	}

if($x===null)
		$x = $this->x;
	$this->_out(sprintf('q %.2F 0 0 %.2F %.2F %.2F cm /I%d Do Q',$w*$this->k,$h*$this->k,$x*$this->k,($this->h-($y+$h))*$this->k,$info['i']));
	if($link)
		$this->Link($x,$y,$w,$h,$link);
}

function GetX()
{
	// Get x position
	return $this->x;
}

function SetX($x)
{
	// Set x position
	if($x>=0)
		$this->x = $x;
	else
		$this->x = $this->w+$x;
}

function GetY()
{
	// Get y position
	return $this->y;
}

function SetY($y)
{
	// Set y position and reset x
	$this->x = $this->lMargin;
	if($y>=0)
		$this->y = $y;
	else
		$this->y = $this->h+$y;
}

function SetXY($x, $y)
{
	// Set x and y positions
	$this->SetY($y);
	$this->SetX($x);
}

/*******************************************************************************
*                                                                              *
*                              Protected methods                               *
*                                                                              *
*******************************************************************************/
function _dochecks()
{
	// Check availability of %F
	if(sprintf('%.1F',1.0)!='1.0')
		$this->Error('This version of PHP is not supported');
	// Check mbstring overloading
	if(ini_get('mbstring.func_overload') & 2)
		$this->Error('mbstring overloading must be disabled');
	// Ensure runtime magic quotes are disabled
	if(get_magic_quotes_runtime())
		@set_magic_quotes_runtime(0);
}

function _endpage()
{
	$this->state = 1;
}

function _loadfont($font)
{
	// Load a font definition file from the font directory
	include($this->fontpath.$font);
	$a = get_defined_vars();
	if(!isset($a['name']))
		$this->Error('Could not include font definition file');
	return $a;
}

function _escape($s)
{
	// Escape special characters in strings
	$s = str_replace('\\','\\\\',$s);
	$s = str_replace('(','\$',$s);
	$s = str_replace(')','\$',$s);
	$s = str_replace("\r",'\\r',$s);
	return $s;
}

function _textstring($s)
{
	// Format a text string
	return '('.$this->_escape($s).')';
}

function _dounderline($x, $y, $txt)
{
	// Underline text
	$up = $this->CurrentFont['up'];
	$ut = $this->CurrentFont['ut'];
	$w = $this->GetStringWidth($txt)+$this->ws*substr_count($txt,' ');
	return sprintf('%.2F %.2F %.2F %.2F re f',$x*$this->k,($this->h-($y-$up/1000*$this->FontSize))*$this->k,$w*$this->k,-$ut/1000*$this->FontSizePt);
}

function _parsejpg($file)
{
	// Extract info from a JPEG file
	$a = getimagesize($file);
	if(!$a)
		$this->Error('Missing or incorrect image file: '.$file);
	if($a[2]!=2)
		$this->Error('Not a JPEG file: '.$file);
	if(!isset($a['channels']) || $a['channels']==3)
		$colspace = 'DeviceRGB';
	elseif($a['channels']==4)
		$colspace = 'DeviceCMYK';
	else
		$colspace = 'DeviceGray';
	$bpc = isset($a['bits']) ? $a['bits'] : 8;
	$data = file_get_contents($file);
	return array('w'=>$a[0], 'h'=>$a[1], 'cs'=>$colspace, 'bpc'=>$bpc, 'f'=>'DCTDecode', 'data'=>$data);
}

function _parsepng($file)
{
	// Extract info from a PNG file
	$f = fopen($file,'rb');
	if(!$f)
		$this->Error('Can\'t open image file: '.$file);
	$info = $this->_parsepngstream($f,$file);
	fclose($f);
	return $info;
}

function _parsepngstream($f, $file)
{
	// Check signature
	if($this->_readstream($f,8)!=chr(137).'PNG'.chr(13).chr(10).chr(26).chr(10))
		$this->Error('Not a PNG file: '.$file);

// Read header chunk
	$this->_readstream($f,4);
	if($this->_readstream($f,4)!='IHDR')
		$this->Error('Incorrect PNG file: '.$file);
	$w = $this->_readint($f);
	$h = $this->_readint($f);
	$bpc = ord($this->_readstream($f,1));
	if($bpc>8)
		$this->Error('16-bit depth not supported: '.$file);
	$ct = ord($this->_readstream($f,1));
	if($ct==0 || $ct==4)
		$colspace = 'DeviceGray';
	elseif($ct==2 || $ct==6)
		$colspace = 'DeviceRGB';
	elseif($ct==3)
		$colspace = 'Indexed';
	else
		$this->Error('Unknown color type: '.$file);
	if(ord($this->_readstream($f,1))!=0)
		$this->Error('Unknown compression method: '.$file);
	if(ord($this->_readstream($f,1))!=0)
		$this->Error('Unknown filter method: '.$file);
	if(ord($this->_readstream($f,1))!=0)
		$this->Error('Interlacing not supported: '.$file);
	$this->_readstream($f,4);
	$dp = '/Predictor 15 /Colors '.($colspace=='DeviceRGB' ? 3 : 1).' /BitsPerComponent '.$bpc.' /Columns '.$w;

// Scan chunks looking for palette, transparency and image data
	$pal = '';
	$trns = '';
	$data = '';
	do
	{
		$n = $this->_readint($f);
		$type = $this->_readstream($f,4);
		if($type=='PLTE')
		{
			// Read palette
			$pal = $this->_readstream($f,$n);
			$this->_readstream($f,4);
		}
		elseif($type=='tRNS')
		{
			// Read transparency info
			$t = $this->_readstream($f,$n);
			if($ct==0)
				$trns = array(ord(substr($t,1,1)));
			elseif($ct==2)
				$trns = array(ord(substr($t,1,1)), ord(substr($t,3,1)), ord(substr($t,5,1)));
			else
			{
				$pos = strpos($t,chr(0));
				if($pos!==false)
					$trns = array($pos);
			}
			$this->_readstream($f,4);
		}
		elseif($type=='IDAT')
		{
			// Read image data block
			$data .= $this->_readstream($f,$n);
			$this->_readstream($f,4);
		}
		elseif($type=='IEND')
			break;
		else
			$this->_readstream($f,$n+4);
	}
	while($n);

if($colspace=='Indexed' && empty($pal))
		$this->Error('Missing palette in '.$file);
	$info = array('w'=>$w, 'h'=>$h, 'cs'=>$colspace, 'bpc'=>$bpc, 'f'=>'FlateDecode', 'dp'=>$dp, 'pal'=>$pal, 'trns'=>$trns);
	if($ct>=4)
	{
		// Extract alpha channel
		if(!function_exists('gzuncompress'))
			$this->Error('Zlib not available, can\'t handle alpha channel: '.$file);
		$data = gzuncompress($data);
		$color = '';
		$alpha = '';
		if($ct==4)
		{
			// Gray image
			$len = 2*$w;
			for($i=0;$i<$h;$i++)
			{
				$pos = (1+$len)*$i;
				$color .= $data[$pos];
				$alpha .= $data[$pos];
				$line = substr($data,$pos+1,$len);
				$color .= preg_replace('/(.)./s','$1',$line);
				$alpha .= preg_replace('/.(.)/s','$1',$line);
			}
		}
		else
		{
			// RGB image
			$len = 4*$w;
			for($i=0;$i<$h;$i++)
			{
				$pos = (1+$len)*$i;
				$color .= $data[$pos];
				$alpha .= $data[$pos];
				$line = substr($data,$pos+1,$len);
				$color .= preg_replace('/(.{3})./s','$1',$line);
				$alpha .= preg_replace('/.{3}(.)/s','$1',$line);
			}
		}
		unset($data);
		$data = gzcompress($color);
		$info['smask'] = gzcompress($alpha);
		if($this->PDFVersion<'1.4')
			$this->PDFVersion = '1.4';
	}
	$info['data'] = $data;
	return $info;
}

function _readstream($f, $n)
{
	// Read n bytes from stream
	$res = '';
	while($n>0 && !feof($f))
	{
		$s = fread($f,$n);
		if($s===false)
			$this->Error('Error while reading stream');
		$n -= strlen($s);
		$res .= $s;
	}
	if($n>0)
		$this->Error('Unexpected end of stream');
	return $res;
}

function _readint($f)
{
	// Read a 4-byte integer from stream
	$a = unpack('Ni',$this->_readstream($f,4));
	return $a['i'];
}

function _newobj()
{
	// Begin a new object
	$this->n++;
	$this->offsets[$this->n] = strlen($this->buffer);
	$this->_out($this->n.' 0 obj');
}

function _putstream($s)
{
	$this->_out('stream');
	$this->_out($s);
	$this->_out('endstream');
}

function _out($s)
{
	// Add a line to the document
	if($this->state==2)
		$this->pages[$this->page] .= $s."\n";
	else
		$this->buffer .= $s."\n";
}

function _putimages()
{
	foreach(array_keys($this->images) as $file)
	{
		$this->_putimage($this->images[$file]);
		unset($this->images[$file]['data']);
		unset($this->images[$file]['smask']);
	}
}

function _putxobjectdict()
{
	foreach($this->images as $image)
		$this->_out('/I'.$image['i'].' '.$image['n'].' 0 R');
}

function _putresourcedict()
{
	$this->_out('/ProcSet [/PDF /Text /ImageB /ImageC /ImageI]');
	$this->_out('/Font <<');
	foreach($this->fonts as $font)
		$this->_out('/F'.$font['i'].' '.$font['n'].' 0 R');
	$this->_out('>>');
	$this->_out('/XObject <<');
	$this->_putxobjectdict();
	$this->_out('>>');
}

function _putresources()
{
	$this->_putfonts();
	$this->_putimages();
	// Resource dictionary
	$this->offsets[2] = strlen($this->buffer);
	$this->_out('2 0 obj');
	$this->_out('<<');
	$this->_putresourcedict();
	$this->_out('>>');
	$this->_out('endobj');
}

function _putinfo()
{
	$this->_out('/Producer '.$this->_textstring('FPDF '.FPDF_VERSION));
	if(!empty($this->title))
		$this->_out('/Title '.$this->_textstring($this->title));
	if(!empty($this->subject))
		$this->_out('/Subject '.$this->_textstring($this->subject));
	if(!empty($this->author))
		$this->_out('/Author '.$this->_textstring($this->author));
	if(!empty($this->keywords))
		$this->_out('/Keywords '.$this->_textstring($this->keywords));
	if(!empty($this->creator))
		$this->_out('/Creator '.$this->_textstring($this->creator));
	$this->_out('/CreationDate '.$this->_textstring('D:'.@date('YmdHis')));
}

function _putcatalog()
{
	$this->_out('/Type /Catalog');
	$this->_out('/Pages 1 0 R');
	if($this->ZoomMode=='fullpage')
		$this->_out('/OpenAction [3 0 R /Fit]');
	elseif($this->ZoomMode=='fullwidth')
		$this->_out('/OpenAction [3 0 R /FitH null]');
	elseif($this->ZoomMode=='real')
		$this->_out('/OpenAction [3 0 R /XYZ null null 1]');
	elseif(!is_string($this->ZoomMode))
		$this->_out('/OpenAction [3 0 R /XYZ null null '.sprintf('%.2F',$this->ZoomMode/100).']');
	if($this->LayoutMode=='single')
		$this->_out('/PageLayout /SinglePage');
	elseif($this->LayoutMode=='continuous')
		$this->_out('/PageLayout /OneColumn');
	elseif($this->LayoutMode=='two')
		$this->_out('/PageLayout /TwoColumnLeft');
}

function _putheader()
{
	$this->_out('%PDF-'.$this->PDFVersion);
}

function _puttrailer()
{
	$this->_out('/Size '.($this->n+1));
	$this->_out('/Root '.$this->n.' 0 R');
	$this->_out('/Info '.($this->n-1).' 0 R');
}

function _enddoc()
{
	$this->_putheader();
	$this->_putpages();
	$this->_putresources();
	// Info
	$this->_newobj();
	$this->_out('<<');
	$this->_putinfo();
	$this->_out('>>');
	$this->_out('endobj');
	// Catalog
	$this->_newobj();
	$this->_out('<<');
	$this->_putcatalog();
	$this->_out('>>');
	$this->_out('endobj');
	// Cross-ref
	$o = strlen($this->buffer);
	$this->_out('xref');
	$this->_out('0 '.($this->n+1));
	$this->_out('0000000000 65535 f ');
	for($i=1;$i<=$this->n;$i++)
		$this->_out(sprintf('%010d 00000 n ',$this->offsets[$i]));
	// Trailer
	$this->_out('trailer');
	$this->_out('<<');
	$this->_puttrailer();
	$this->_out('>>');
	$this->_out('startxref');
	$this->_out($o);
	$this->_out('%%EOF');
	$this->state = 3;
}
// End of class
}

// Handle special IE contype request
if(isset($_SERVER['HTTP_USER_AGENT']) && $_SERVER['HTTP_USER_AGENT']=='contype')
{
	header('Content-Type: application/pdf');
	exit;
}

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