<?php
/** no direct access **/
defined('MECEXEC') or die();

/**
* tFPDF (based on FPDF 1.7)
*
* Version:  1.24
* Date:     2011-09-24
* Author:   Ian Back <[email protected]>
* License:  LGPL
*/

define('tFPDF_VERSION','1.24');

class tFPDF
{
    var $unifontSubset;
    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 __construct($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 AddPage($orientation='', $size='')
    {
        // Start a new page
        if($this->state==0)
            $this->Open();
        $family = $this->FontFamily;
        $style = $this->FontStyle.($this->underline ? 'U' : '');
        $fontsize = $this->FontSizePt;
        $lw = $this->LineWidth;
        $dc = $this->DrawColor;
        $fc = $this->FillColor;
        $tc = $this->TextColor;
        $cf = $this->ColorFlag;
        if($this->page>0)
        {
            // Page footer
            $this->InFooter = true;
            $this->Footer();
            $this->InFooter = false;
            // Close page
            $this->_endpage();
        }
        // Start new page
        $this->_beginpage($orientation,$size);
        // Set line cap style to square
        $this->_out('2 J');
        // Set line width
        $this->LineWidth = $lw;
        $this->_out(sprintf('%.2F w',$lw*$this->k));
        // Set font
        if($family)
            $this->SetFont($family,$style,$fontsize);
        // Set colors
        $this->DrawColor = $dc;
        if($dc!='0 G')
            $this->_out($dc);
        $this->FillColor = $fc;
        if($fc!='0 g')
            $this->_out($fc);
        $this->TextColor = $tc;
        $this->ColorFlag = $cf;
        // Page header
        $this->InHeader = true;
        $this->Header();
        $this->InHeader = false;
        // Restore line width
        if($this->LineWidth!=$lw)
        {
            $this->LineWidth = $lw;
            $this->_out(sprintf('%.2F w',$lw*$this->k));
        }
        // Restore font
        if($family)
            $this->SetFont($family,$style,$fontsize);
        // Restore colors
        if($this->DrawColor!=$dc)
        {
            $this->DrawColor = $dc;
            $this->_out($dc);
        }
        if($this->FillColor!=$fc)
        {
            $this->FillColor = $fc;
            $this->_out($fc);
        }
        $this->TextColor = $tc;
        $this->ColorFlag = $cf;
    }

    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'];
        $w=0;
        if ($this->unifontSubset) {
            $unicode = $this->UTF8StringToArray($s);
            foreach($unicode as $char) {
                if (isset($cw[$char])) { $w += (ord($cw[2*$char])<<8) + ord($cw[2*$char+1]); }
                else if($char>0 && $char<128 && isset($cw[chr($char)])) { $w += $cw[chr($char)]; }
                else if(isset($this->CurrentFont['desc']['MissingWidth'])) { $w += $this->CurrentFont['desc']['MissingWidth']; }
                else if(isset($this->CurrentFont['MissingWidth'])) { $w += $this->CurrentFont['MissingWidth']; }
                else { $w += 500; }
            }
        }
        else {
            $l = strlen($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 AddFont($family, $style='', $file='', $uni=false)
    {
        // Add a TrueType, OpenType or Type1 font
        $family = strtolower($family);
        $style = strtoupper($style);
        if($style=='IB')
            $style='BI';
        if($file=='') {
           if ($uni) {
            $file = str_replace(' ','',$family).strtolower($style).'.ttf';
           }
           else {
            $file = str_replace(' ','',$family).strtolower($style).'.php';
           }
        }
        $fontkey = $family.$style;
        if(isset($this->fonts[$fontkey]))
            return;

        if ($uni) {
            if (defined("_SYSTEM_TTFONTS") && file_exists(_SYSTEM_TTFONTS.$file )) { $ttffilename = _SYSTEM_TTFONTS.$file ; }
            else { $ttffilename = $this->_getfontpath().'unifont/'.$file ; }
            $unifilename = $this->_getfontpath().'unifont/'.strtolower(substr($file ,0,(strpos($file ,'.'))));
            $name = '';
            $originalsize = 0;
            $ttfstat = stat($ttffilename);
            if (file_exists($unifilename.'.mtx.php')) {
                include($unifilename.'.mtx.php');
            }
            if (!isset($type) ||  !isset($name) || $originalsize != $ttfstat['size']) {
                $ttffile = $ttffilename;
                require_once($this->_getfontpath().'unifont/ttfonts.php');
                $ttf = new TTFontFile();
                $ttf->getMetrics($ttffile);
                $cw = $ttf->charWidths;
                $name = preg_replace('/[ ()]/','',$ttf->fullName);

                $desc= array('Ascent'=>round($ttf->ascent),
                'Descent'=>round($ttf->descent),
                'CapHeight'=>round($ttf->capHeight),
                'Flags'=>$ttf->flags,
                'FontBBox'=>'['.round($ttf->bbox[0])." ".round($ttf->bbox[1])." ".round($ttf->bbox[2])." ".round($ttf->bbox[3]).']',
                'ItalicAngle'=>$ttf->italicAngle,
                'StemV'=>round($ttf->stemV),
                'MissingWidth'=>round($ttf->defaultWidth));
                $up = round($ttf->underlinePosition);
                $ut = round($ttf->underlineThickness);
                $originalsize = $ttfstat['size']+0;
                $type = 'TTF';
                // Generate metrics .php file
                $s='<?php'."\n";
                $s.='$name=\''.$name."';\n";
                $s.='$type=\''.$type."';\n";
                $s.='$desc='.var_export($desc,true).";\n";
                $s.='$up='.$up.";\n";
                $s.='$ut='.$ut.";\n";
                $s.='$ttffile=\''.$ttffile."';\n";
                $s.='$originalsize='.$originalsize.";\n";
                $s.='$fontkey=\''.$fontkey."';\n";
                $s.="?>";
                if (is_writable(dirname($this->_getfontpath().'unifont/'.'x'))) {
                    $fh = fopen($unifilename.'.mtx.php',"w");
                    fwrite($fh,$s,strlen($s));
                    fclose($fh);
                    $fh = fopen($unifilename.'.cw.dat',"wb");
                    fwrite($fh,$cw,strlen($cw));
                    fclose($fh);
                    @unlink($unifilename.'.cw127.php');
                }
                unset($ttf);
            }
            else {
                $cw = @file_get_contents($unifilename.'.cw.dat');
            }
            $i = count($this->fonts)+1;
            if(!empty($this->AliasNbPages))
                $sbarr = range(0,57);
            else
                $sbarr = range(0,32);
            $this->fonts[$fontkey] = array('i'=>$i, 'type'=>$type, 'name'=>$name, 'desc'=>$desc, 'up'=>$up, 'ut'=>$ut, 'cw'=>$cw, 'ttffile'=>$ttffile, 'fontkey'=>$fontkey, 'subset'=>$sbarr, 'unifilename'=>$unifilename);

            $this->FontFiles[$fontkey]=array('length1'=>$originalsize, 'type'=>"TTF", 'ttffile'=>$ttffile);
            $this->FontFiles[$file]=array('type'=>"TTF");
            unset($cw);
        }
        else {
            $info = $this->_loadfont($file);
            $info['i'] = count($this->fonts)+1;
            if(!empty($info['diff']))
            {
                // Search existing encodings
                $n = array_search($info['diff'],$this->diffs);
                if(!$n)
                {
                    $n = count($this->diffs)+1;
                    $this->diffs[$n] = $info['diff'];
                }
                $info['diffn'] = $n;
            }
            if(!empty($info['file']))
            {
                // Embedded font
                if($info['type']=='TrueType')
                    $this->FontFiles[$info['file']] = array('length1'=>$info['originalsize']);
                else
                    $this->FontFiles[$info['file']] = array('length1'=>$info['size1'], 'length2'=>$info['size2']);
            }
            $this->fonts[$fontkey] = $info;
        }
    }

    function SetFont($family, $style='', $size=0)
    {
        // Select a font; size given in points
        if($family=='')
            $family = $this->FontFamily;
        else
            $family = strtolower($family);
        $style = strtoupper($style);
        if(strpos($style,'U')!==false)
        {
            $this->underline = true;
            $style = str_replace('U','',$style);
        }
        else
            $this->underline = false;
        if($style=='IB')
            $style = 'BI';
        if($size==0)
            $size = $this->FontSizePt;
        // Test if font is already selected
        if($this->FontFamily==$family && $this->FontStyle==$style && $this->FontSizePt==$size)
            return;
        // Test if font is already loaded
        $fontkey = $family.$style;
        if(!isset($this->fonts[$fontkey]))
        {
            // Test if one of the core fonts
            if($family=='arial')
                $family = 'helvetica';
            if(in_array($family,$this->CoreFonts))
            {
                if($family=='symbol' || $family=='zapfdingbats')
                    $style = '';
                $fontkey = $family.$style;
                if(!isset($this->fonts[$fontkey]))
                    $this->AddFont($family,$style);
            }
            else
                $this->Error('Undefined font: '.$family.' '.$style);
        }
        // Select it
        $this->FontFamily = $family;
        $this->FontStyle = $style;
        $this->FontSizePt = $size;
        $this->FontSize = $size/$this->k;
        $this->CurrentFont = &$this->fonts[$fontkey];
        if ($this->fonts[$fontkey]['type']=='TTF') { $this->unifontSubset = true; }
        else { $this->unifontSubset = false; }
        if($this->page>0)
            $this->_out(sprintf('BT /F%d %.2F Tf ET',$this->CurrentFont['i'],$this->FontSizePt));
    }

    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, $txt)
    {
        // Output a string
        if ($this->unifontSubset)
        {
            $txt2 = '('.$this->_escape($this->UTF8ToUTF16BE($txt, false)).')';
            foreach($this->UTF8StringToArray($txt) as $uni)
                $this->CurrentFont['subset'][$uni] = $uni;
        }
        else
            $txt2 = '('.$this->_escape($txt).')';
        $s = sprintf('BT %.2F %.2F Td %s Tj ET',$x*$this->k,($this->h-$y)*$this->k,$txt2);
        if($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 Cell($w, $h=0, $txt='', $border=0, $ln=0, $align='', $fill=false, $link='')
    {
        // Output a cell
        $k = $this->k;
        if($this->y+$h>$this->PageBreakTrigger && !$this->InHeader && !$this->InFooter && $this->AcceptPageBreak())
        {
            // Automatic page break
            $x = $this->x;
            $ws = $this->ws;
            if($ws>0)
            {
                $this->ws = 0;
                $this->_out('0 Tw');
            }
            $this->AddPage($this->CurOrientation,$this->CurPageSize);
            $this->x = $x;
            if($ws>0)
            {
                $this->ws = $ws;
                $this->_out(sprintf('%.3F Tw',$ws*$k));
            }
        }
        if($w==0)
            $w = $this->w-$this->rMargin-$this->x;
        $s = '';
        if($fill || $border==1)
        {
            if($fill)
                $op = ($border==1) ? 'B' : 'f';
            else
                $op = 'S';
            $s = sprintf('%.2F %.2F %.2F %.2F re %s ',$this->x*$k,($this->h-$this->y)*$k,$w*$k,-$h*$k,$op);
        }
        if(is_string($border))
        {
            $x = $this->x;
            $y = $this->y;
            if(strpos($border,'L')!==false)
                $s .= sprintf('%.2F %.2F m %.2F %.2F l S ',$x*$k,($this->h-$y)*$k,$x*$k,($this->h-($y+$h))*$k);
            if(strpos($border,'T')!==false)
                $s .= sprintf('%.2F %.2F m %.2F %.2F l S ',$x*$k,($this->h-$y)*$k,($x+$w)*$k,($this->h-$y)*$k);
            if(strpos($border,'R')!==false)
                $s .= sprintf('%.2F %.2F m %.2F %.2F l S ',($x+$w)*$k,($this->h-$y)*$k,($x+$w)*$k,($this->h-($y+$h))*$k);
            if(strpos($border,'B')!==false)
                $s .= sprintf('%.2F %.2F m %.2F %.2F l S ',$x*$k,($this->h-($y+$h))*$k,($x+$w)*$k,($this->h-($y+$h))*$k);
        }
        if($txt!=='')
        {
            if($align=='R')
                $dx = $w-$this->cMargin-$this->GetStringWidth($txt);
            elseif($align=='C')
                $dx = ($w-$this->GetStringWidth($txt))/2;
            else
                $dx = $this->cMargin;
            if($this->ColorFlag)
                $s .= 'q '.$this->TextColor.' ';

            // If multibyte, Tw has no effect - do word spacing using an adjustment before each space
            if ($this->ws && $this->unifontSubset) {
                foreach($this->UTF8StringToArray($txt) as $uni)
                    $this->CurrentFont['subset'][$uni] = $uni;
                $space = $this->_escape($this->UTF8ToUTF16BE(' ', false));
                $s .= sprintf('BT 0 Tw %.2F %.2F Td [',($this->x+$dx)*$k,($this->h-($this->y+.5*$h+.3*$this->FontSize))*$k);
                $t = explode(' ',$txt);
                $numt = count($t);
                for($i=0;$i<$numt;$i++) {
                    $tx = $t[$i];
                    $tx = '('.$this->_escape($this->UTF8ToUTF16BE($tx, false)).')';
                    $s .= sprintf('%s ',$tx);
                    if (($i+1)<$numt) {
                        $adj = -($this->ws*$this->k)*1000/$this->FontSizePt;
                        $s .= sprintf('%d(%s) ',$adj,$space);
                    }
                }
                $s .= '] TJ';
                $s .= ' ET';
            }
            else {
                if ($this->unifontSubset)
                {
                    $txt2 = '('.$this->_escape($this->UTF8ToUTF16BE($txt, false)).')';
                    foreach($this->UTF8StringToArray($txt) as $uni)
                        $this->CurrentFont['subset'][$uni] = $uni;
                }
                else
                    $txt2='('.str_replace(')','\\)',str_replace('(','\\(',str_replace('\\','\\\\',$txt))).')';
                $s .= sprintf('BT %.2F %.2F Td %s Tj ET',($this->x+$dx)*$k,($this->h-($this->y+.5*$h+.3*$this->FontSize))*$k,$txt2);
            }
            if($this->underline)
                $s .= ' '.$this->_dounderline($this->x+$dx,$this->y+.5*$h+.3*$this->FontSize,$txt);
            if($this->ColorFlag)
                $s .= ' Q';
            if($link)
                $this->Link($this->x+$dx,$this->y+.5*$h-.5*$this->FontSize,$this->GetStringWidth($txt),$this->FontSize,$link);
        }
        if($s)
            $this->_out($s);
        $this->lasth = $h;
        if($ln>0)
        {
            // Go to next line
            $this->y += $h;
            if($ln==1)
                $this->x = $this->lMargin;
        }
        else
            $this->x += $w;
    }

    function MultiCell($w, $h, $txt, $border=0, $align='J', $fill=false)
    {
        // Output text with automatic or explicit line breaks
        $cw = &$this->CurrentFont['cw'];
        if($w==0)
            $w = $this->w-$this->rMargin-$this->x;
        $wmax = ($w-2*$this->cMargin);
        $s = str_replace("\r",'',$txt);
        if ($this->unifontSubset) {
            $nb=mb_strlen($s, 'utf-8');
            while($nb>0 && mb_substr($s,$nb-1,1,'utf-8')=="\n")	$nb--;
        }
        else {
            $nb = strlen($s);
            if($nb>0 && $s[$nb-1]=="\n")
                $nb--;
        }
        $b = 0;
        if($border)
        {
            if($border==1)
            {
                $border = 'LTRB';
                $b = 'LRT';
                $b2 = 'LR';
            }
            else
            {
                $b2 = '';
                if(strpos($border,'L')!==false)
                    $b2 .= 'L';
                if(strpos($border,'R')!==false)
                    $b2 .= 'R';
                $b = (strpos($border,'T')!==false) ? $b2.'T' : $b2;
            }
        }
        $sep = -1;
        $i = 0;
        $j = 0;
        $l = 0;
        $ns = 0;
        $nl = 1;
        while($i<$nb)
        {
            // Get next character
            if ($this->unifontSubset) {
                $c = mb_substr($s,$i,1,'UTF-8');
            }
            else {
                $c=$s[$i];
            }
            if($c=="\n")
            {
                // Explicit line break
                if($this->ws>0)
                {
                    $this->ws = 0;
                    $this->_out('0 Tw');
                }
                if ($this->unifontSubset) {
                    $this->Cell($w,$h,mb_substr($s,$j,$i-$j,'UTF-8'),$b,2,$align,$fill);
                }
                else {
                    $this->Cell($w,$h,substr($s,$j,$i-$j),$b,2,$align,$fill);
                }
                $i++;
                $sep = -1;
                $j = $i;
                $l = 0;
                $ns = 0;
                $nl++;
                if($border && $nl==2)
                    $b = $b2;
                continue;
            }
            if($c==' ')
            {
                $sep = $i;
                $ls = $l;
                $ns++;
            }

            if ($this->unifontSubset) { $l += $this->GetStringWidth($c); }
            else { $l += $cw[$c]*$this->FontSize/1000; }

            if($l>$wmax)
            {
                // Automatic line break
                if($sep==-1)
                {
                    if($i==$j)
                        $i++;
                    if($this->ws>0)
                    {
                        $this->ws = 0;
                        $this->_out('0 Tw');
                    }
                    if ($this->unifontSubset) {
                        $this->Cell($w,$h,mb_substr($s,$j,$i-$j,'UTF-8'),$b,2,$align,$fill);
                    }
                    else {
                        $this->Cell($w,$h,substr($s,$j,$i-$j),$b,2,$align,$fill);
                    }
                }
                else
                {
                    if($align=='J')
                    {
                        $this->ws = ($ns>1) ? ($wmax-$ls)/($ns-1) : 0;
                        $this->_out(sprintf('%.3F Tw',$this->ws*$this->k));
                    }
                    if ($this->unifontSubset) {
                        $this->Cell($w,$h,mb_substr($s,$j,$sep-$j,'UTF-8'),$b,2,$align,$fill);
                    }
                    else {
                        $this->Cell($w,$h,substr($s,$j,$sep-$j),$b,2,$align,$fill);
                    }
                    $i = $sep+1;
                }
                $sep = -1;
                $j = $i;
                $l = 0;
                $ns = 0;
                $nl++;
                if($border && $nl==2)
                    $b = $b2;
            }
            else
                $i++;
        }
        // Last chunk
        if($this->ws>0)
        {
            $this->ws = 0;
            $this->_out('0 Tw');
        }
        if($border && strpos($border,'B')!==false)
            $b .= 'B';
        if ($this->unifontSubset) {
            $this->Cell($w,$h,mb_substr($s,$j,$i-$j,'UTF-8'),$b,2,$align,$fill);
        }
        else {
            $this->Cell($w,$h,substr($s,$j,$i-$j),$b,2,$align,$fill);
        }
        $this->x = $this->lMargin;
    }

    function Write($h, $txt, $link='')
    {
        // Output text in flowing mode
        $cw = &$this->CurrentFont['cw'];
        $w = $this->w-$this->rMargin-$this->x;

        $wmax = ($w-2*$this->cMargin);
        $s = str_replace("\r",'',$txt);
        if ($this->unifontSubset) {
            $nb = mb_strlen($s, 'UTF-8');
            if($nb==1 && $s==" ") {
                $this->x += $this->GetStringWidth($s);
                return;
            }
        }
        else {
            $nb = strlen($s);
        }
        $sep = -1;
        $i = 0;
        $j = 0;
        $l = 0;
        $nl = 1;
        while($i<$nb)
        {
            // Get next character
            if ($this->unifontSubset) {
                $c = mb_substr($s,$i,1,'UTF-8');
            }
            else {
                $c = $s[$i];
            }
            if($c=="\n")
            {
                // Explicit line break
                if ($this->unifontSubset) {
                    $this->Cell($w,$h,mb_substr($s,$j,$i-$j,'UTF-8'),0,2,'',0,$link);
                }
                else {
                    $this->Cell($w,$h,substr($s,$j,$i-$j),0,2,'',0,$link);
                }
                $i++;
                $sep = -1;
                $j = $i;
                $l = 0;
                if($nl==1)
                {
                    $this->x = $this->lMargin;
                    $w = $this->w-$this->rMargin-$this->x;
                    $wmax = ($w-2*$this->cMargin);
                }
                $nl++;
                continue;
            }
            if($c==' ')
                $sep = $i;

            if ($this->unifontSubset) { $l += $this->GetStringWidth($c); }
            else { $l += $cw[$c]*$this->FontSize/1000; }

            if($l>$wmax)
            {
                // Automatic line break
                if($sep==-1)
                {
                    if($this->x>$this->lMargin)
                    {
                        // Move to next line
                        $this->x = $this->lMargin;
                        $this->y += $h;
                        $w = $this->w-$this->rMargin-$this->x;
                        $wmax = ($w-2*$this->cMargin);
                        $i++;
                        $nl++;
                        continue;
                    }
                    if($i==$j)
                        $i++;
                    if ($this->unifontSubset) {
                        $this->Cell($w,$h,mb_substr($s,$j,$i-$j,'UTF-8'),0,2,'',0,$link);
                    }
                    else {
                        $this->Cell($w,$h,substr($s,$j,$i-$j),0,2,'',0,$link);
                    }
                }
                else
                {
                    if ($this->unifontSubset) {
                        $this->Cell($w,$h,mb_substr($s,$j,$sep-$j,'UTF-8'),0,2,'',0,$link);
                    }
                    else {
                        $this->Cell($w,$h,substr($s,$j,$sep-$j),0,2,'',0,$link);
                    }
                    $i = $sep+1;
                }
                $sep = -1;
                $j = $i;
                $l = 0;
                if($nl==1)
                {
                    $this->x = $this->lMargin;
                    $w = $this->w-$this->rMargin-$this->x;
                    $wmax = ($w-2*$this->cMargin);
                }
                $nl++;
            }
            else
                $i++;
        }
        // Last chunk
        if($i!=$j) {
            if ($this->unifontSubset) {
                $this->Cell($l,$h,mb_substr($s,$j,$i-$j,'UTF-8'),0,0,'',0,$link);
            }
            else {
                $this->Cell($l,$h,substr($s,$j),0,0,'',0,$link);
            }
        }
    }

    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);
    }

    function Output($name='', $dest='')
    {
        // Output PDF to some destination
        if($this->state<3)
            $this->Close();
        $dest = strtoupper($dest);
        if($dest=='')
        {
            if($name=='')
            {
                $name = 'doc.pdf';
                $dest = 'I';
            }
            else
                $dest = 'F';
        }
        switch($dest)
        {
            case 'I':
                // Send to standard output
                $this->_checkoutput();
                if(PHP_SAPI!='cli')
                {
                    // We send to a browser
                    header('Content-Type: application/pdf');
                    header('Content-Disposition: inline; filename="'.$name.'"');
                    header('Cache-Control: private, max-age=0, must-revalidate');
                    header('Pragma: public');
                }
                echo $this->buffer;
                break;
            case 'D':
                // Download file
                $this->_checkoutput();
                header('Content-Type: application/x-download');
                header('Content-Disposition: attachment; filename="'.$name.'"');
                header('Cache-Control: private, max-age=0, must-revalidate');
                header('Pragma: public');
                echo $this->buffer;
                break;
            case 'F':
                // Save to local file
                $f = fopen($name,'wb');
                if(!$f)
                    $this->Error('Unable to create output file: '.$name);
                fwrite($f,$this->buffer,strlen($this->buffer));
                fclose($f);
                break;
            case 'S':
                // Return as a string
                return $this->buffer;
            default:
                $this->Error('Incorrect output destination: '.$dest);
        }
        return '';
    }

    /*******************************************************************************
    *                                                                              *
    *                              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 availability of mbstring
        if(!function_exists('mb_strlen'))
            $this->Error('mbstring extension is not available');
        // Check mbstring overloading
        if(ini_get('mbstring.func_overload') & 2)
            $this->Error('mbstring overloading must be disabled');
        // Ensure runtime magic quotes are disabled
        if(version_compare(PHP_VERSION, '5.3.0', '<') and get_magic_quotes_runtime())
            @set_magic_quotes_runtime(0);
    }

    function _getfontpath()
    {
        return $this->fontpath;
    }

    function _checkoutput()
    {
        if(PHP_SAPI!='cli')
        {
            if(headers_sent($file,$line))
                $this->Error("Some data has already been output, can't send PDF file (output started at $file:$line)");
        }
        if(ob_get_length())
        {
            // The output buffer is not empty
            if(preg_match('/^(\xEF\xBB\xBF)?\s*$/',ob_get_contents()))
            {
                // It contains only a UTF-8 BOM and/or whitespace, let's clean it
                ob_clean();
            }
            else
                $this->Error("Some data has already been output, can't send PDF file");
        }
    }

    function _getpagesize($size)
    {
        if(is_string($size))
        {
            $size = strtolower($size);
            if(!isset($this->StdPageSizes[$size]))
                $this->Error('Unknown page size: '.$size);
            $a = $this->StdPageSizes[$size];
            return array($a[0]/$this->k, $a[1]/$this->k);
        }
        else
        {
            if($size[0]>$size[1])
                return array($size[1], $size[0]);
            else
                return $size;
        }
    }

    function _beginpage($orientation, $size)
    {
        $this->page++;
        $this->pages[$this->page] = '';
        $this->state = 2;
        $this->x = $this->lMargin;
        $this->y = $this->tMargin;
        $this->FontFamily = '';
        // Check page size and orientation
        if($orientation=='')
            $orientation = $this->DefOrientation;
        else
            $orientation = strtoupper($orientation[0]);
        if($size=='')
            $size = $this->DefPageSize;
        else
            $size = $this->_getpagesize($size);
        if($orientation!=$this->CurOrientation || $size[0]!=$this->CurPageSize[0] || $size[1]!=$this->CurPageSize[1])
        {
            // New size or orientation
            if($orientation=='P')
            {
                $this->w = $size[0];
                $this->h = $size[1];
            }
            else
            {
                $this->w = $size[1];
                $this->h = $size[0];
            }
            $this->wPt = $this->w*$this->k;
            $this->hPt = $this->h*$this->k;
            $this->PageBreakTrigger = $this->h-$this->bMargin;
            $this->CurOrientation = $orientation;
            $this->CurPageSize = $size;
        }
        if($orientation!=$this->DefOrientation || $size[0]!=$this->DefPageSize[0] || $size[1]!=$this->DefPageSize[1])
            $this->PageSizes[$this->page] = array($this->wPt, $this->hPt);
    }

    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 _UTF8toUTF16($s)
    {
        // Convert UTF-8 to UTF-16BE with BOM
        $res = "\xFE\xFF";
        $nb = strlen($s);
        $i = 0;
        while($i<$nb)
        {
            $c1 = ord($s[$i++]);
            if($c1>=224)
            {
                // 3-byte character
                $c2 = ord($s[$i++]);
                $c3 = ord($s[$i++]);
                $res .= chr((($c1 & 0x0F)<<4) + (($c2 & 0x3C)>>2));
                $res .= chr((($c2 & 0x03)<<6) + ($c3 & 0x3F));
            }
            elseif($c1>=192)
            {
                // 2-byte character
                $c2 = ord($s[$i++]);
                $res .= chr(($c1 & 0x1C)>>2);
                $res .= chr((($c1 & 0x03)<<6) + ($c2 & 0x3F));
            }
            else
            {
                // Single-byte character
                $res .= "\0".chr($c1);
            }
        }
        return $res;
    }

    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 _parsegif($file)
    {
        // Extract info from a GIF file (via PNG conversion)
        if(!function_exists('imagepng'))
            $this->Error('GD extension is required for GIF support');
        if(!function_exists('imagecreatefromgif'))
            $this->Error('GD has no GIF read support');
        $im = imagecreatefromgif($file);
        if(!$im)
            $this->Error('Missing or incorrect image file: '.$file);
        imageinterlace($im,0);
        $f = @fopen('php://temp','rb+');
        if($f)
        {
            // Perform conversion in memory
            ob_start();
            imagepng($im);
            $data = ob_get_clean();
            imagedestroy($im);
            fwrite($f,$data);
            rewind($f);
            $info = $this->_parsepngstream($f,$file);
            fclose($f);
        }
        else
        {
            // Use temporary file
            $tmp = tempnam('.','gif');
            if(!$tmp)
                $this->Error('Unable to create a temporary file');
            if(!imagepng($im,$tmp))
                $this->Error('Error while saving to temporary file');
            imagedestroy($im);
            $info = $this->_parsepng($tmp);
            unlink($tmp);
        }
        return $info;
    }

    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 _putpages()
    {
        $nb = $this->page;
        if(!empty($this->AliasNbPages))
        {
            // Replace number of pages in fonts using subsets
            $alias = $this->UTF8ToUTF16BE($this->AliasNbPages, false);
            $r = $this->UTF8ToUTF16BE("$nb", false);
            for($n=1;$n<=$nb;$n++)
                $this->pages[$n] = str_replace($alias,$r,$this->pages[$n]);
            // Now repeat for no pages in non-subset fonts
            for($n=1;$n<=$nb;$n++)
                $this->pages[$n] = str_replace($this->AliasNbPages,$nb,$this->pages[$n]);
        }
        if($this->DefOrientation=='P')
        {
            $wPt = $this->DefPageSize[0]*$this->k;
            $hPt = $this->DefPageSize[1]*$this->k;
        }
        else
        {
            $wPt = $this->DefPageSize[1]*$this->k;
            $hPt = $this->DefPageSize[0]*$this->k;
        }
        $filter = ($this->compress) ? '/Filter /FlateDecode ' : '';
        for($n=1;$n<=$nb;$n++)
        {
            // Page
            $this->_newobj();
            $this->_out('<</Type /Page');
            $this->_out('/Parent 1 0 R');
            if(isset($this->PageSizes[$n]))
                $this->_out(sprintf('/MediaBox [0 0 %.2F %.2F]',$this->PageSizes[$n][0],$this->PageSizes[$n][1]));
            $this->_out('/Resources 2 0 R');
            if(isset($this->PageLinks[$n]))
            {
                // Links
                $annots = '/Annots [';
                foreach($this->PageLinks[$n] as $pl)
                {
                    $rect = sprintf('%.2F %.2F %.2F %.2F',$pl[0],$pl[1],$pl[0]+$pl[2],$pl[1]-$pl[3]);
                    $annots .= '<</Type /Annot /Subtype /Link /Rect ['.$rect.'] /Border [0 0 0] ';
                    if(is_string($pl[4]))
                        $annots .= '/A <</S /URI /URI '.$this->_textstring($pl[4]).'>>>>';
                    else
                    {
                        $l = $this->links[$pl[4]];
                        $h = isset($this->PageSizes[$l[0]]) ? $this->PageSizes[$l[0]][1] : $hPt;
                        $annots .= sprintf('/Dest [%d 0 R /XYZ 0 %.2F null]>>',1+2*$l[0],$h-$l[1]*$this->k);
                    }
                }
                $this->_out($annots.']');
            }
            if($this->PDFVersion>'1.3')
                $this->_out('/Group <</Type /Group /S /Transparency /CS /DeviceRGB>>');
            $this->_out('/Contents '.($this->n+1).' 0 R>>');
            $this->_out('endobj');
            // Page content
            $p = ($this->compress) ? gzcompress($this->pages[$n]) : $this->pages[$n];
            $this->_newobj();
            $this->_out('<<'.$filter.'/Length '.strlen($p).'>>');
            $this->_putstream($p);
            $this->_out('endobj');
        }
        // Pages root
        $this->offsets[1] = strlen($this->buffer);
        $this->_out('1 0 obj');
        $this->_out('<</Type /Pages');
        $kids = '/Kids [';
        for($i=0;$i<$nb;$i++)
            $kids .= (3+2*$i).' 0 R ';
        $this->_out($kids.']');
        $this->_out('/Count '.$nb);
        $this->_out(sprintf('/MediaBox [0 0 %.2F %.2F]',$wPt,$hPt));
        $this->_out('>>');
        $this->_out('endobj');
    }

    function _putfonts()
    {
        $nf=$this->n;
        foreach($this->diffs as $diff)
        {
            // Encodings
            $this->_newobj();
            $this->_out('<</Type /Encoding /BaseEncoding /WinAnsiEncoding /Differences ['.$diff.']>>');
            $this->_out('endobj');
        }
        foreach($this->FontFiles as $file=>$info)
        {
           if (!isset($info['type']) || $info['type']!='TTF') {
            // Font file embedding
            $this->_newobj();
            $this->FontFiles[$file]['n']=$this->n;
            $font='';
            $f=fopen($this->_getfontpath().$file,'rb',1);
            if(!$f)
                $this->Error('Font file not found');
            while(!feof($f))
                $font.=fread($f,8192);
            fclose($f);
            $compressed=(substr($file,-2)=='.z');
            if(!$compressed && isset($info['length2']))
            {
                $header=(ord($font[0])==128);
                if($header)
                {
                    // Strip first binary header
                    $font=substr($font,6);
                }
                if($header && ord($font[$info['length1']])==128)
                {
                    // Strip second binary header
                    $font=substr($font,0,$info['length1']).substr($font,$info['length1']+6);
                }
            }
            $this->_out('<</Length '.strlen($font));
            if($compressed)
                $this->_out('/Filter /FlateDecode');
            $this->_out('/Length1 '.$info['length1']);
            if(isset($info['length2']))
                $this->_out('/Length2 '.$info['length2'].' /Length3 0');
            $this->_out('>>');
            $this->_putstream($font);
            $this->_out('endobj');
           }
        }
        foreach($this->fonts as $k=>$font)
        {
            // Font objects
            //$this->fonts[$k]['n']=$this->n+1;
            $type = $font['type'];
            $name = $font['name'];
            if($type=='Core')
            {
                // Standard font
                $this->fonts[$k]['n']=$this->n+1;
                $this->_newobj();
                $this->_out('<</Type /Font');
                $this->_out('/BaseFont /'.$name);
                $this->_out('/Subtype /Type1');
                if($name!='Symbol' && $name!='ZapfDingbats')
                    $this->_out('/Encoding /WinAnsiEncoding');
                $this->_out('>>');
                $this->_out('endobj');
            }
            elseif($type=='Type1' || $type=='TrueType')
            {
                // Additional Type1 or TrueType font
                $this->fonts[$k]['n']=$this->n+1;
                $this->_newobj();
                $this->_out('<</Type /Font');
                $this->_out('/BaseFont /'.$name);
                $this->_out('/Subtype /'.$type);
                $this->_out('/FirstChar 32 /LastChar 255');
                $this->_out('/Widths '.($this->n+1).' 0 R');
                $this->_out('/FontDescriptor '.($this->n+2).' 0 R');
                if($font['enc'])
                {
                    if(isset($font['diff']))
                        $this->_out('/Encoding '.($nf+$font['diff']).' 0 R');
                    else
                        $this->_out('/Encoding /WinAnsiEncoding');
                }
                $this->_out('>>');
                $this->_out('endobj');
                // Widths
                $this->_newobj();
                $cw=&$font['cw'];
                $s='[';
                for($i=32;$i<=255;$i++)
                    $s.=$cw[chr($i)].' ';
                $this->_out($s.']');
                $this->_out('endobj');
                // Descriptor
                $this->_newobj();
                $s='<</Type /FontDescriptor /FontName /'.$name;
                foreach($font['desc'] as $k=>$v)
                    $s.=' /'.$k.' '.$v;
                $file=$font['file'];
                if($file)
                    $s.=' /FontFile'.($type=='Type1' ? '' : '2').' '.$this->FontFiles[$file]['n'].' 0 R';
                $this->_out($s.'>>');
                $this->_out('endobj');
            }
            // TrueType embedded SUBSETS or FULL
            else if ($type=='TTF') {
                $this->fonts[$k]['n']=$this->n+1;
                require_once($this->_getfontpath().'unifont/ttfonts.php');
                $ttf = new TTFontFile();
                $fontname = 'MPDFAA'.'+'.$font['name'];
                $subset = $font['subset'];
                unset($subset[0]);
                $ttfontstream = $ttf->makeSubset($font['ttffile'], $subset);
                $ttfontsize = strlen($ttfontstream);
                $fontstream = gzcompress($ttfontstream);
                $codeToGlyph = $ttf->codeToGlyph;
                unset($codeToGlyph[0]);

                // Type0 Font
                // A composite font - a font composed of other fonts, organized hierarchically
                $this->_newobj();
                $this->_out('<</Type /Font');
                $this->_out('/Subtype /Type0');
                $this->_out('/BaseFont /'.$fontname.'');
                $this->_out('/Encoding /Identity-H');
                $this->_out('/DescendantFonts ['.($this->n + 1).' 0 R]');
                $this->_out('/ToUnicode '.($this->n + 2).' 0 R');
                $this->_out('>>');
                $this->_out('endobj');

                // CIDFontType2
                // A CIDFont whose glyph descriptions are based on TrueType font technology
                $this->_newobj();
                $this->_out('<</Type /Font');
                $this->_out('/Subtype /CIDFontType2');
                $this->_out('/BaseFont /'.$fontname.'');
                $this->_out('/CIDSystemInfo '.($this->n + 2).' 0 R');
                $this->_out('/FontDescriptor '.($this->n + 3).' 0 R');
                if (isset($font['desc']['MissingWidth'])){
                    $this->_out('/DW '.$font['desc']['MissingWidth'].'');
                }

                $this->_putTTfontwidths($font, $ttf->maxUni);

                $this->_out('/CIDToGIDMap '.($this->n + 4).' 0 R');
                $this->_out('>>');
                $this->_out('endobj');

                // ToUnicode
                $this->_newobj();
                $toUni = "/CIDInit /ProcSet findresource begin\n";
                $toUni .= "12 dict begin\n";
                $toUni .= "begincmap\n";
                $toUni .= "/CIDSystemInfo\n";
                $toUni .= "<</Registry (Adobe)\n";
                $toUni .= "/Ordering (UCS)\n";
                $toUni .= "/Supplement 0\n";
                $toUni .= ">> def\n";
                $toUni .= "/CMapName /Adobe-Identity-UCS def\n";
                $toUni .= "/CMapType 2 def\n";
                $toUni .= "1 begincodespacerange\n";
                $toUni .= "<0000> <FFFF>\n";
                $toUni .= "endcodespacerange\n";
                $toUni .= "1 beginbfrange\n";
                $toUni .= "<0000> <FFFF> <0000>\n";
                $toUni .= "endbfrange\n";
                $toUni .= "endcmap\n";
                $toUni .= "CMapName currentdict /CMap defineresource pop\n";
                $toUni .= "end\n";
                $toUni .= "end";
                $this->_out('<</Length '.(strlen($toUni)).'>>');
                $this->_putstream($toUni);
                $this->_out('endobj');

                // CIDSystemInfo dictionary
                $this->_newobj();
                $this->_out('<</Registry (Adobe)');
                $this->_out('/Ordering (UCS)');
                $this->_out('/Supplement 0');
                $this->_out('>>');
                $this->_out('endobj');

                // Font descriptor
                $this->_newobj();
                $this->_out('<</Type /FontDescriptor');
                $this->_out('/FontName /'.$fontname);
                foreach($font['desc'] as $kd=>$v) {
                    if ($kd == 'Flags') { $v = $v | 4; $v = $v & ~32; }	// SYMBOLIC font flag
                    $this->_out(' /'.$kd.' '.$v);
                }
                $this->_out('/FontFile2 '.($this->n + 2).' 0 R');
                $this->_out('>>');
                $this->_out('endobj');

                // Embed CIDToGIDMap
                // A specification of the mapping from CIDs to glyph indices
                $cidtogidmap = '';
                $cidtogidmap = str_pad('', 256*256*2, "\x00");
                foreach($codeToGlyph as $cc=>$glyph) {
                    $cidtogidmap[$cc*2] = chr($glyph >> 8);
                    $cidtogidmap[$cc*2 + 1] = chr($glyph & 0xFF);
                }
                $cidtogidmap = gzcompress($cidtogidmap);
                $this->_newobj();
                $this->_out('<</Length '.strlen($cidtogidmap).'');
                $this->_out('/Filter /FlateDecode');
                $this->_out('>>');
                $this->_putstream($cidtogidmap);
                $this->_out('endobj');

                //Font file
                $this->_newobj();
                $this->_out('<</Length '.strlen($fontstream));
                $this->_out('/Filter /FlateDecode');
                $this->_out('/Length1 '.$ttfontsize);
                $this->_out('>>');
                $this->_putstream($fontstream);
                $this->_out('endobj');
                unset($ttf);
            }
            else
            {
                // Allow for additional types
                $this->fonts[$k]['n'] = $this->n+1;
                $mtd='_put'.strtolower($type);
                if(!method_exists($this,$mtd))
                    $this->Error('Unsupported font type: '.$type);
                $this->$mtd($font);
            }
        }
    }

    function _putTTfontwidths(&$font, $maxUni) {
        if (file_exists($font['unifilename'].'.cw127.php')) {
            include($font['unifilename'].'.cw127.php') ;
            $startcid = 128;
        }
        else {
            $rangeid = 0;
            $range = array();
            $prevcid = -2;
            $prevwidth = -1;
            $interval = false;
            $startcid = 1;
        }
        $cwlen = $maxUni + 1;

        // for each character
        for ($cid=$startcid; $cid<$cwlen; $cid++) {
            if ($cid==128 && (!file_exists($font['unifilename'].'.cw127.php'))) {
                if (is_writable(dirname($this->_getfontpath().'unifont/x'))) {
                    $fh = fopen($font['unifilename'].'.cw127.php',"wb");
                    $cw127='<?php'."\n";
                    $cw127.='$rangeid='.$rangeid.";\n";
                    $cw127.='$prevcid='.$prevcid.";\n";
                    $cw127.='$prevwidth='.$prevwidth.";\n";
                    if ($interval) { $cw127.='$interval=true'.";\n"; }
                    else { $cw127.='$interval=false'.";\n"; }
                    $cw127.='$range='.var_export($range,true).";\n";
                    $cw127.="?>";
                    fwrite($fh,$cw127,strlen($cw127));
                    fclose($fh);
                }
            }
            if ($font['cw'][$cid*2] == "\00" && $font['cw'][$cid*2+1] == "\00") { continue; }
            $width = (ord($font['cw'][$cid*2]) << 8) + ord($font['cw'][$cid*2+1]);
            if ($width == 65535) { $width = 0; }
            if ($cid > 255 && (!isset($font['subset'][$cid]) || !$font['subset'][$cid])) { continue; }
            if (!isset($font['dw']) || (isset($font['dw']) && $width != $font['dw'])) {
                if ($cid == ($prevcid + 1)) {
                    if ($width == $prevwidth) {
                        if ($width == $range[$rangeid][0]) {
                            $range[$rangeid][] = $width;
                        }
                        else {
                            array_pop($range[$rangeid]);
                            // new range
                            $rangeid = $prevcid;
                            $range[$rangeid] = array();
                            $range[$rangeid][] = $prevwidth;
                            $range[$rangeid][] = $width;
                        }
                        $interval = true;
                        $range[$rangeid]['interval'] = true;
                    } else {
                        if ($interval) {
                            // new range
                            $rangeid = $cid;
                            $range[$rangeid] = array();
                            $range[$rangeid][] = $width;
                        }
                        else { $range[$rangeid][] = $width; }
                        $interval = false;
                    }
                } else {
                    $rangeid = $cid;
                    $range[$rangeid] = array();
                    $range[$rangeid][] = $width;
                    $interval = false;
                }
                $prevcid = $cid;
                $prevwidth = $width;
            }
        }
        $prevk = -1;
        $nextk = -1;
        $prevint = false;
        foreach ($range as $k => $ws) {
            $cws = count($ws);
            if (($k == $nextk) AND (!$prevint) AND ((!isset($ws['interval'])) OR ($cws < 4))) {
                if (isset($range[$k]['interval'])) { unset($range[$k]['interval']); }
                $range[$prevk] = array_merge($range[$prevk], $range[$k]);
                unset($range[$k]);
            }
            else { $prevk = $k; }
            $nextk = $k + $cws;
            if (isset($ws['interval'])) {
                if ($cws > 3) { $prevint = true; }
                else { $prevint = false; }
                unset($range[$k]['interval']);
                --$nextk;
            }
            else { $prevint = false; }
        }
        $w = '';
        foreach ($range as $k => $ws) {
            if (count(array_count_values($ws)) == 1) { $w .= ' '.$k.' '.($k + count($ws) - 1).' '.$ws[0]; }
            else { $w .= ' '.$k.' [ '.implode(' ', $ws).' ]' . "\n"; }
        }
        $this->_out('/W ['.$w.' ]');
    }

    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 _putimage(&$info)
    {
        $this->_newobj();
        $info['n'] = $this->n;
        $this->_out('<</Type /XObject');
        $this->_out('/Subtype /Image');
        $this->_out('/Width '.$info['w']);
        $this->_out('/Height '.$info['h']);
        if($info['cs']=='Indexed')
            $this->_out('/ColorSpace [/Indexed /DeviceRGB '.(strlen($info['pal'])/3-1).' '.($this->n+1).' 0 R]');
        else
        {
            $this->_out('/ColorSpace /'.$info['cs']);
            if($info['cs']=='DeviceCMYK')
                $this->_out('/Decode [1 0 1 0 1 0 1 0]');
        }
        $this->_out('/BitsPerComponent '.$info['bpc']);
        if(isset($info['f']))
            $this->_out('/Filter /'.$info['f']);
        if(isset($info['dp']))
            $this->_out('/DecodeParms <<'.$info['dp'].'>>');
        if(isset($info['trns']) && is_array($info['trns']))
        {
            $trns = '';
            for($i=0;$i<count($info['trns']);$i++)
                $trns .= $info['trns'][$i].' '.$info['trns'][$i].' ';
            $this->_out('/Mask ['.$trns.']');
        }
        if(isset($info['smask']))
            $this->_out('/SMask '.($this->n+1).' 0 R');
        $this->_out('/Length '.strlen($info['data']).'>>');
        $this->_putstream($info['data']);
        $this->_out('endobj');
        // Soft mask
        if(isset($info['smask']))
        {
            $dp = '/Predictor 15 /Colors 1 /BitsPerComponent 8 /Columns '.$info['w'];
            $smask = array('w'=>$info['w'], 'h'=>$info['h'], 'cs'=>'DeviceGray', 'bpc'=>8, 'f'=>$info['f'], 'dp'=>$dp, 'data'=>$info['smask']);
            $this->_putimage($smask);
        }
        // Palette
        if($info['cs']=='Indexed')
        {
            $filter = ($this->compress) ? '/Filter /FlateDecode ' : '';
            $pal = ($this->compress) ? gzcompress($info['pal']) : $info['pal'];
            $this->_newobj();
            $this->_out('<<'.$filter.'/Length '.strlen($pal).'>>');
            $this->_putstream($pal);
            $this->_out('endobj');
        }
    }

    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('tFPDF '.tFPDF_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;
    }

    // ********* NEW FUNCTIONS *********
    // Converts UTF-8 strings to UTF16-BE.
    function UTF8ToUTF16BE($str, $setbom=true) {
        $outstr = "";
        if ($setbom) {
            $outstr .= "\xFE\xFF"; // Byte Order Mark (BOM)
        }
        $outstr .= mb_convert_encoding($str, 'UTF-16BE', 'UTF-8');
        return $outstr;
    }

    // Converts UTF-8 strings to codepoints array
    function UTF8StringToArray($str) {
       $out = array();
       $len = strlen($str);
       for ($i = 0; $i < $len; $i++) {
        $uni = -1;
          $h = ord($str[$i]);
          if ( $h <= 0x7F )
             $uni = $h;
          elseif ( $h >= 0xC2 ) {
             if ( ($h <= 0xDF) && ($i < $len -1) )
                $uni = ($h & 0x1F) << 6 | (ord($str[++$i]) & 0x3F);
             elseif ( ($h <= 0xEF) && ($i < $len -2) )
                $uni = ($h & 0x0F) << 12 | (ord($str[++$i]) & 0x3F) << 6
                                           | (ord($str[++$i]) & 0x3F);
             elseif ( ($h <= 0xF4) && ($i < $len -3) )
                $uni = ($h & 0x0F) << 18 | (ord($str[++$i]) & 0x3F) << 12
                                           | (ord($str[++$i]) & 0x3F) << 6
                                           | (ord($str[++$i]) & 0x3F);
          }
        if ($uni >= 0) {
            $out[] = $uni;
        }
       }
       return $out;
    }
}

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