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File Content: fpdf.php

<?php
/*******************************************************************************
* FPDF                                                                         *
*                                                                              *
* Version: 1.82                                                                *
* Date:    2019-12-07                                                          *
* Author:  Olivier PLATHEY                                                     *
*******************************************************************************/

define('FPDF_VERSION','1.82');

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

/*******************************************************************************
*                               Public methods                                 *
*******************************************************************************/

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
	$this->metadata['Title'] = $isUTF8 ? $title : utf8_encode($title);
}

function SetAuthor($author, $isUTF8=false)
{
	// Author of document
	$this->metadata['Author'] = $isUTF8 ? $author : utf8_encode($author);
}

function SetSubject($subject, $isUTF8=false)
{
	// Subject of document
	$this->metadata['Subject'] = $isUTF8 ? $subject : utf8_encode($subject);
}

function SetKeywords($keywords, $isUTF8=false)
{
	// Keywords of document
	$this->metadata['Keywords'] = $isUTF8 ? $keywords : utf8_encode($keywords);
}

function SetCreator($creator, $isUTF8=false)
{
	// Creator of document
	$this->metadata['Creator'] = $isUTF8 ? $creator : utf8_encode($creator);
}

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

function Error($msg)
{
	// Fatal error
	throw new Exception('FPDF error: '.$msg);
}

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()
{
	$this->SetFont('Arial','',8);
	$this->Cell('100','10','Pdf generated by Expensin Software ',0,1);
}

function Footer()
{
	$this->SetFont('Arial','',8);
	$this->Cell('100','10','Pdf generated by Expensin Software ',0,1);
}

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 AddFont($family, $style='', $file='')
{
	// Add a TrueType, OpenType or Type1 font
	$family = strtolower($family);
	if($file=='')
		$file = str_replace(' ','',$family).strtolower($style).'.php';
	$style = strtoupper($style);
	if($style=='IB')
		$style = 'BI';
	$fontkey = $family.$style;
	if(isset($this->fonts[$fontkey]))
		return;
	$info = $this->_loadfont($file);
	$info['i'] = count($this->fonts)+1;
	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 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, $txt)
{
	// Output a string
	if(!isset($this->CurrentFont))
		$this->Error('No font has been set');
	$s = sprintf('BT %.2F %.2F Td (%s) Tj ET',$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 the 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='', $link='')
{
	// Put an image on the page
	if($file=='')
		$this->Error('Image file name is empty');
	if(!isset($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->CurRotation);
			$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 GetPageWidth()
{
	// Get current page width
	return $this->w;
}

function GetPageHeight()
{
	// Get current page height
	return $this->h;
}

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, $resetX=true)
{
	// Set y position and optionally reset x
	if($y>=0)
		$this->y = $y;
	else
		$this->y = $this->h+$y;
	if($resetX)
		$this->x = $this->lMargin;
}

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

/*******************************************************************************
*                              Protected methods                               *
*******************************************************************************/

protected function _dochecks()
{
	// Check mbstring overloading
	if(ini_get('mbstring.func_overload') & 2)
		$this->Error('mbstring overloading must be disabled');
}

protected 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");
	}
}

protected 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;
	}
}

protected function _beginpage($orientation, $size, $rotation)
{
	$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])
		$this->PageInfo[$this->page]['size'] = array($this->wPt, $this->hPt);
	if($rotation!=0)
	{
		if($rotation%90!=0)
			$this->Error('Incorrect rotation value: '.$rotation);
		$this->CurRotation = $rotation;
		$this->PageInfo[$this->page]['rotation'] = $rotation;
	}
}

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

protected function _loadfont($font)
{
	// Load a font definition file from the font directory
	if(strpos($font,'/')!==false || strpos($font,"\\")!==false)
		$this->Error('Incorrect font definition file name: '.$font);
	include($this->fontpath.$font);
	if(!isset($name))
		$this->Error('Could not include font definition file');
	if(isset($enc))
		$enc = strtolower($enc);
	if(!isset($subsetted))
		$subsetted = false;
	return get_defined_vars();
}

protected function _isascii($s)
{
	// Test if string is ASCII
	$nb = strlen($s);
	for($i=0;$i<$nb;$i++)
	{
		if(ord($s[$i])>127)
			return false;
	}
	return true;
}

protected function _httpencode($param, $value, $isUTF8)
{
	// Encode HTTP header field parameter
	if($this->_isascii($value))
		return $param.'="'.$value.'"';
	if(!$isUTF8)
		$value = utf8_encode($value);
	if(strpos($_SERVER['HTTP_USER_AGENT'],'MSIE')!==false)
		return $param.'="'.rawurlencode($value).'"';
	else
		return $param."*=UTF-8''".rawurlencode($value);
}

protected 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;
}

protected function _escape($s)
{
	// Escape special characters
	if(strpos($s,'(')!==false || strpos($s,')')!==false || strpos($s,'\\')!==false || strpos($s,"\r")!==false)
		return str_replace(array('\\','(',')',"\r"), array('\\\\','\$','\$','\\r'), $s);
	else
		return $s;
}

protected function _textstring($s)
{
	// Format a text string
	if(!$this->_isascii($s))
		$s = $this->_UTF8toUTF16($s);
	return '('.$this->_escape($s).')';
}

protected 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);
}

protected 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);
}

protected 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;
}

protected 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);
		$this->WithAlpha = true;
		if($this->PDFVersion<'1.4')
			$this->PDFVersion = '1.4';
	}
	$info['data'] = $data;
	return $info;
}

protected 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;
}

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

protected 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($im,0);
	ob_start();
	imagepng($im);
	$data = ob_get_clean();
	imagedestroy($im);
	$f = fopen('php://temp','rb+');
	if(!$f)
		$this->Error('Unable to create memory stream');
	fwrite($f,$data);
	rewind($f);
	$info = $this->_parsepngstream($f,$file);
	fclose($f);
	return $info;
}

protected function _out($s)
{
	// Add a line to the document
	if($this->state==2)
		$this->pages[$this->page] .= $s."\n";
	elseif($this->state==1)
		$this->_put($s);
	elseif($this->state==0)
		$this->Error('No page has been added yet');
	elseif($this->state==3)
		$this->Error('The document is closed');
}

protected function _put($s)
{
	$this->buffer .= $s."\n";
}

protected function _getoffset()
{
	return strlen($this->buffer);
}

protected function _newobj($n=null)
{
	// Begin a new object
	if($n===null)
		$n = ++$this->n;
	$this->offsets[$n] = $this->_getoffset();
	$this->_put($n.' 0 obj');
}

protected function _putstream($data)
{
	$this->_put('stream');
	$this->_put($data);
	$this->_put('endstream');
}

protected function _putstreamobject($data)
{
	if($this->compress)
	{
		$entries = '/Filter /FlateDecode ';
		$data = gzcompress($data);
	}
	else
		$entries = '';
	$entries .= '/Length '.strlen($data);
	$this->_newobj();
	$this->_put('<<'.$entries.'>>');
	$this->_putstream($data);
	$this->_put('endobj');
}

protected function _putpage($n)
{
	$this->_newobj();
	$this->_put('<</Type /Page');
	$this->_put('/Parent 1 0 R');
	if(isset($this->PageInfo[$n]['size']))
		$this->_put(sprintf('/MediaBox [0 0 %.2F %.2F]',$this->PageInfo[$n]['size'][0],$this->PageInfo[$n]['size'][1]));
	if(isset($this->PageInfo[$n]['rotation']))
		$this->_put('/Rotate '.$this->PageInfo[$n]['rotation']);
	$this->_put('/Resources 2 0 R');
	if(isset($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]];
				if(isset($this->PageInfo[$l[0]]['size']))
					$h = $this->PageInfo[$l[0]]['size'][1];
				else
					$h = ($this->DefOrientation=='P') ? $this->DefPageSize[1]*$this->k : $this->DefPageSize[0]*$this->k;
				$annots .= sprintf('/Dest [%d 0 R /XYZ 0 %.2F null]>>',$this->PageInfo[$l[0]]['n'],$h-$l[1]*$this->k);
			}
		}
		$this->_put($annots.']');
	}
	if($this->WithAlpha)
		$this->_put('/Group <</Type /Group /S /Transparency /CS /DeviceRGB>>');
	$this->_put('/Contents '.($this->n+1).' 0 R>>');
	$this->_put('endobj');
	// Page content
	if(!empty($this->AliasNbPages))
		$this->pages[$n] = str_replace($this->AliasNbPages,$this->page,$this->pages[$n]);
	$this->_putstreamobject($this->pages[$n]);
}

protected function _putpages()
{
	$nb = $this->page;
	for($n=1;$n<=$nb;$n++)
		$this->PageInfo[$n]['n'] = $this->n+1+2*($n-1);
	for($n=1;$n<=$nb;$n++)
		$this->_putpage($n);
	// Pages root
	$this->_newobj(1);
	$this->_put('<</Type /Pages');
	$kids = '/Kids [';
	for($n=1;$n<=$nb;$n++)
		$kids .= $this->PageInfo[$n]['n'].' 0 R ';
	$this->_put($kids.']');
	$this->_put('/Count '.$nb);
	if($this->DefOrientation=='P')
	{
		$w = $this->DefPageSize[0];
		$h = $this->DefPageSize[1];
	}
	else
	{
		$w = $this->DefPageSize[1];
		$h = $this->DefPageSize[0];
	}
	$this->_put(sprintf('/MediaBox [0 0 %.2F %.2F]',$w*$this->k,$h*$this->k));
	$this->_put('>>');
	$this->_put('endobj');
}

protected function _putfonts()
{
	foreach($this->FontFiles as $file=>$info)
	{
		// Font file embedding
		$this->_newobj();
		$this->FontFiles[$file]['n'] = $this->n;
		$font = file_get_contents($this->fontpath.$file,true);
		if(!$font)
			$this->Error('Font file not found: '.$file);
		$compressed = (substr($file,-2)=='.z');
		if(!$compressed && isset($info['length2']))
			$font = substr($font,6,$info['length1']).substr($font,6+$info['length1']+6,$info['length2']);
		$this->_put('<</Length '.strlen($font));
		if($compressed)
			$this->_put('/Filter /FlateDecode');
		$this->_put('/Length1 '.$info['length1']);
		if(isset($info['length2']))
			$this->_put('/Length2 '.$info['length2'].' /Length3 0');
		$this->_put('>>');
		$this->_putstream($font);
		$this->_put('endobj');
	}
	foreach($this->fonts as $k=>$font)
	{
		// Encoding
		if(isset($font['diff']))
		{
			if(!isset($this->encodings[$font['enc']]))
			{
				$this->_newobj();
				$this->_put('<</Type /Encoding /BaseEncoding /WinAnsiEncoding /Differences ['.$font['diff'].']>>');
				$this->_put('endobj');
				$this->encodings[$font['enc']] = $this->n;
			}
		}
		// ToUnicode CMap
		if(isset($font['uv']))
		{
			if(isset($font['enc']))
				$cmapkey = $font['enc'];
			else
				$cmapkey = $font['name'];
			if(!isset($this->cmaps[$cmapkey]))
			{
				$cmap = $this->_tounicodecmap($font['uv']);
				$this->_putstreamobject($cmap);
				$this->cmaps[$cmapkey] = $this->n;
			}
		}
		// Font object
		$this->fonts[$k]['n'] = $this->n+1;
		$type = $font['type'];
		$name = $font['name'];
		if($font['subsetted'])
			$name = 'AAAAAA+'.$name;
		if($type=='Core')
		{
			// Core font
			$this->_newobj();
			$this->_put('<</Type /Font');
			$this->_put('/BaseFont /'.$name);
			$this->_put('/Subtype /Type1');
			if($name!='Symbol' && $name!='ZapfDingbats')
				$this->_put('/Encoding /WinAnsiEncoding');
			if(isset($font['uv']))
				$this->_put('/ToUnicode '.$this->cmaps[$cmapkey].' 0 R');
			$this->_put('>>');
			$this->_put('endobj');
		}
		elseif($type=='Type1' || $type=='TrueType')
		{
			// Additional Type1 or TrueType/OpenType font
			$this->_newobj();
			$this->_put('<</Type /Font');
			$this->_put('/BaseFont /'.$name);
			$this->_put('/Subtype /'.$type);
			$this->_put('/FirstChar 32 /LastChar 255');
			$this->_put('/Widths '.($this->n+1).' 0 R');
			$this->_put('/FontDescriptor '.($this->n+2).' 0 R');
			if(isset($font['diff']))
				$this->_put('/Encoding '.$this->encodings[$font['enc']].' 0 R');
			else
				$this->_put('/Encoding /WinAnsiEncoding');
			if(isset($font['uv']))
				$this->_put('/ToUnicode '.$this->cmaps[$cmapkey].' 0 R');
			$this->_put('>>');
			$this->_put('endobj');
			// Widths
			$this->_newobj();
			$cw = &$font['cw'];
			$s = '[';
			for($i=32;$i<=255;$i++)
				$s .= $cw[chr($i)].' ';
			$this->_put($s.']');
			$this->_put('endobj');
			// Descriptor
			$this->_newobj();
			$s = '<</Type /FontDescriptor /FontName /'.$name;
			foreach($font['desc'] as $k=>$v)
				$s .= ' /'.$k.' '.$v;
			if(!empty($font['file']))
				$s .= ' /FontFile'.($type=='Type1' ? '' : '2').' '.$this->FontFiles[$font['file']]['n'].' 0 R';
			$this->_put($s.'>>');
			$this->_put('endobj');
		}
		else
		{
			// Allow for additional types
			$mtd = '_put'.strtolower($type);
			if(!method_exists($this,$mtd))
				$this->Error('Unsupported font type: '.$type);
			$this->$mtd($font);
		}
	}
}

protected function _tounicodecmap($uv)
{
	$ranges = '';
	$nbr = 0;
	$chars = '';
	$nbc = 0;
	foreach($uv as $c=>$v)
	{
		if(is_array($v))
		{
			$ranges .= sprintf("<%02X> <%02X> <%04X>\n",$c,$c+$v[1]-1,$v[0]);
			$nbr++;
		}
		else
		{
			$chars .= sprintf("<%02X> <%04X>\n",$c,$v);
			$nbc++;
		}
	}
	$s = "/CIDInit /ProcSet findresource begin\n";
	$s .= "12 dict begin\n";
	$s .= "begincmap\n";
	$s .= "/CIDSystemInfo\n";
	$s .= "<</Registry (Adobe)\n";
	$s .= "/Ordering (UCS)\n";
	$s .= "/Supplement 0\n";
	$s .= ">> def\n";
	$s .= "/CMapName /Adobe-Identity-UCS def\n";
	$s .= "/CMapType 2 def\n";
	$s .= "1 begincodespacerange\n";
	$s .= "<00> <FF>\n";
	$s .= "endcodespacerange\n";
	if($nbr>0)
	{
		$s .= "$nbr beginbfrange\n";
		$s .= $ranges;
		$s .= "endbfrange\n";
	}
	if($nbc>0)
	{
		$s .= "$nbc beginbfchar\n";
		$s .= $chars;
		$s .= "endbfchar\n";
	}
	$s .= "endcmap\n";
	$s .= "CMapName currentdict /CMap defineresource pop\n";
	$s .= "end\n";
	$s .= "end";
	return $s;
}

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

protected function _putimage(&$info)
{
	$this->_newobj();
	$info['n'] = $this->n;
	$this->_put('<</Type /XObject');
	$this->_put('/Subtype /Image');
	$this->_put('/Width '.$info['w']);
	$this->_put('/Height '.$info['h']);
	if($info['cs']=='Indexed')
		$this->_put('/ColorSpace [/Indexed /DeviceRGB '.(strlen($info['pal'])/3-1).' '.($this->n+1).' 0 R]');
	else
	{
		$this->_put('/ColorSpace /'.$info['cs']);
		if($info['cs']=='DeviceCMYK')
			$this->_put('/Decode [1 0 1 0 1 0 1 0]');
	}
	$this->_put('/BitsPerComponent '.$info['bpc']);
	if(isset($info['f']))
		$this->_put('/Filter /'.$info['f']);
	if(isset($info['dp']))
		$this->_put('/DecodeParms <<'.$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].' ';
		$this->_put('/Mask ['.$trns.']');
	}
	if(isset($info['smask']))
		$this->_put('/SMask '.($this->n+1).' 0 R');
	$this->_put('/Length '.strlen($info['data']).'>>');
	$this->_putstream($info['data']);
	$this->_put('endobj');
	// Soft mask
	if(isset($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')
		$this->_putstreamobject($info['pal']);
}

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

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

protected function _putresources()
{
	$this->_putfonts();
	$this->_putimages();
	// Resource dictionary
	$this->_newobj(2);
	$this->_put('<<');
	$this->_putresourcedict();
	$this->_put('>>');
	$this->_put('endobj');
}

protected function _putinfo()
{
	$this->metadata['Producer'] = 'FPDF '.FPDF_VERSION;
	$this->metadata['CreationDate'] = 'D:'.@date('YmdHis');
	foreach($this->metadata as $key=>$value)
		$this->_put('/'.$key.' '.$this->_textstring($value));
}

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

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

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

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

Name	Size	Permission
New folder	---	0755
doc	---	0755
font	---	0755
makefont	---	0755
tutorial	---	0755
FAQ.htm	11397 bytes	0644
changelog.htm	9312 bytes	0644
fpdf.css	1339 bytes	0644
fpdf.php	50046 bytes	0644
fpdf182.tgz	127561 bytes	0644
install.txt	562 bytes	0644
license.txt	331 bytes	0644
watermarlk.jpg	185584 bytes	0644