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<?php
/*******************************************************************************
* Utility to generate font definition files *
* *
* Version: 1.14 *
* Date: 2008-08-03 *
* Author: Olivier PLATHEY *
*******************************************************************************/
function ReadMap($enc)
{
//Read a map file
$file=dirname(__FILE__).'/'.strtolower($enc).'.map';
$a=file($file);
if(empty($a))
die('<b>Error:</b> encoding not found: '.$enc);
$cc2gn=array();
foreach($a as $l)
{
if($l[0]=='!')
{
$e=preg_split('/[ \\t]+/',rtrim($l));
$cc=hexdec(substr($e[0],1));
$gn=$e[2];
$cc2gn[$cc]=$gn;
}
}
for($i=0;$i<=255;$i++)
{
if(!isset($cc2gn[$i]))
$cc2gn[$i]='.notdef';
}
return $cc2gn;
}
function ReadAFM($file, &$map)
{
//Read a font metric file
$a=file($file);
if(empty($a))
die('File not found');
$widths=array();
$fm=array();
$fix=array('Edot'=>'Edotaccent','edot'=>'edotaccent','Idot'=>'Idotaccent','Zdot'=>'Zdotaccent','zdot'=>'zdotaccent',
'Odblacute'=>'Ohungarumlaut','odblacute'=>'ohungarumlaut','Udblacute'=>'Uhungarumlaut','udblacute'=>'uhungarumlaut',
'Gcedilla'=>'Gcommaaccent','gcedilla'=>'gcommaaccent','Kcedilla'=>'Kcommaaccent','kcedilla'=>'kcommaaccent',
'Lcedilla'=>'Lcommaaccent','lcedilla'=>'lcommaaccent','Ncedilla'=>'Ncommaaccent','ncedilla'=>'ncommaaccent',
'Rcedilla'=>'Rcommaaccent','rcedilla'=>'rcommaaccent','Scedilla'=>'Scommaaccent','scedilla'=>'scommaaccent',
'Tcedilla'=>'Tcommaaccent','tcedilla'=>'tcommaaccent','Dslash'=>'Dcroat','dslash'=>'dcroat','Dmacron'=>'Dcroat','dmacron'=>'dcroat',
'combininggraveaccent'=>'gravecomb','combininghookabove'=>'hookabovecomb','combiningtildeaccent'=>'tildecomb',
'combiningacuteaccent'=>'acutecomb','combiningdotbelow'=>'dotbelowcomb','dongsign'=>'dong');
foreach($a as $l)
{
$e=explode(' ',rtrim($l));
if(count($e)<2)
continue;
$code=$e[0];
$param=$e[1];
if($code=='C')
{
//Character metrics
$cc=(int)$e[1];
$w=$e[4];
$gn=$e[7];
if(substr($gn,-4)=='20AC')
$gn='Euro';
if(isset($fix[$gn]))
{
//Fix incorrect glyph name
foreach($map as $c=>$n)
{
if($n==$fix[$gn])
$map[$c]=$gn;
}
}
if(empty($map))
{
//Symbolic font: use built-in encoding
$widths[$cc]=$w;
}
else
{
$widths[$gn]=$w;
if($gn=='X')
$fm['CapXHeight']=$e[13];
}
if($gn=='.notdef')
$fm['MissingWidth']=$w;
}
elseif($code=='FontName')
$fm['FontName']=$param;
elseif($code=='Weight')
$fm['Weight']=$param;
elseif($code=='ItalicAngle')
$fm['ItalicAngle']=(double)$param;
elseif($code=='Ascender')
$fm['Ascender']=(int)$param;
elseif($code=='Descender')
$fm['Descender']=(int)$param;
elseif($code=='UnderlineThickness')
$fm['UnderlineThickness']=(int)$param;
elseif($code=='UnderlinePosition')
$fm['UnderlinePosition']=(int)$param;
elseif($code=='IsFixedPitch')
$fm['IsFixedPitch']=($param=='true');
elseif($code=='FontBBox')
$fm['FontBBox']=array($e[1],$e[2],$e[3],$e[4]);
elseif($code=='CapHeight')
$fm['CapHeight']=(int)$param;
elseif($code=='StdVW')
$fm['StdVW']=(int)$param;
}
if(!isset($fm['FontName']))
die('FontName not found');
if(!empty($map))
{
if(!isset($widths['.notdef']))
$widths['.notdef']=600;
if(!isset($widths['Delta']) && isset($widths['increment']))
$widths['Delta']=$widths['increment'];
//Order widths according to map
for($i=0;$i<=255;$i++)
{
if(!isset($widths[$map[$i]]))
{
echo '<b>Warning:</b> character '.$map[$i].' is missing<br>';
$widths[$i]=$widths['.notdef'];
}
else
$widths[$i]=$widths[$map[$i]];
}
}
$fm['Widths']=$widths;
return $fm;
}
function MakeFontDescriptor($fm, $symbolic)
{
//Ascent
$asc=(isset($fm['Ascender']) ? $fm['Ascender'] : 1000);
$fd="array('Ascent'=>".$asc;
//Descent
$desc=(isset($fm['Descender']) ? $fm['Descender'] : -200);
$fd.=",'Descent'=>".$desc;
//CapHeight
if(isset($fm['CapHeight']))
$ch=$fm['CapHeight'];
elseif(isset($fm['CapXHeight']))
$ch=$fm['CapXHeight'];
else
$ch=$asc;
$fd.=",'CapHeight'=>".$ch;
//Flags
$flags=0;
if(isset($fm['IsFixedPitch']) && $fm['IsFixedPitch'])
$flags+=1<<0;
if($symbolic)
$flags+=1<<2;
if(!$symbolic)
$flags+=1<<5;
if(isset($fm['ItalicAngle']) && $fm['ItalicAngle']!=0)
$flags+=1<<6;
$fd.=",'Flags'=>".$flags;
//FontBBox
if(isset($fm['FontBBox']))
$fbb=$fm['FontBBox'];
else
$fbb=array(0,$desc-100,1000,$asc+100);
$fd.=",'FontBBox'=>'[".$fbb[0].' '.$fbb[1].' '.$fbb[2].' '.$fbb[3]."]'";
//ItalicAngle
$ia=(isset($fm['ItalicAngle']) ? $fm['ItalicAngle'] : 0);
$fd.=",'ItalicAngle'=>".$ia;
//StemV
if(isset($fm['StdVW']))
$stemv=$fm['StdVW'];
elseif(isset($fm['Weight']) && preg_match('/bold|black/i',$fm['Weight']))
$stemv=120;
else
$stemv=70;
$fd.=",'StemV'=>".$stemv;
//MissingWidth
if(isset($fm['MissingWidth']))
$fd.=",'MissingWidth'=>".$fm['MissingWidth'];
$fd.=')';
return $fd;
}
function MakeWidthArray($fm)
{
//Make character width array
$s="array(\n\t";
$cw=$fm['Widths'];
for($i=0;$i<=255;$i++)
{
if(chr($i)=="'")
$s.="'\\''";
elseif(chr($i)=="\\")
$s.="'\\\\'";
elseif($i>=32 && $i<=126)
$s.="'".chr($i)."'";
else
$s.="chr($i)";
$s.='=>'.$fm['Widths'][$i];
if($i<255)
$s.=',';
if(($i+1)%22==0)
$s.="\n\t";
}
$s.=')';
return $s;
}
function MakeFontEncoding($map)
{
//Build differences from reference encoding
$ref=ReadMap('cp1252');
$s='';
$last=0;
for($i=32;$i<=255;$i++)
{
if($map[$i]!=$ref[$i])
{
if($i!=$last+1)
$s.=$i.' ';
$last=$i;
$s.='/'.$map[$i].' ';
}
}
return rtrim($s);
}
function SaveToFile($file, $s, $mode)
{
$f=fopen($file,'w'.$mode);
if(!$f)
die('Can\'t write to file '.$file);
fwrite($f,$s,strlen($s));
fclose($f);
}
function ReadShort($f)
{
$a=unpack('n1n',fread($f,2));
return $a['n'];
}
function ReadLong($f)
{
$a=unpack('N1N',fread($f,4));
return $a['N'];
}
function CheckTTF($file)
{
//Check if font license allows embedding
$f=fopen($file,'rb');
if(!$f)
die('<b>Error:</b> Can\'t open '.$file);
//Extract number of tables
fseek($f,4,SEEK_CUR);
$nb=ReadShort($f);
fseek($f,6,SEEK_CUR);
//Seek OS/2 table
$found=false;
for($i=0;$i<$nb;$i++)
{
if(fread($f,4)=='OS/2')
{
$found=true;
break;
}
fseek($f,12,SEEK_CUR);
}
if(!$found)
{
fclose($f);
return;
}
fseek($f,4,SEEK_CUR);
$offset=ReadLong($f);
fseek($f,$offset,SEEK_SET);
//Extract fsType flags
fseek($f,8,SEEK_CUR);
$fsType=ReadShort($f);
$rl=($fsType & 0x02)!=0;
$pp=($fsType & 0x04)!=0;
$e=($fsType & 0x08)!=0;
fclose($f);
if($rl && !$pp && !$e)
echo '<b>Warning:</b> font license does not allow embedding';
}
/*******************************************************************************
* fontfile: path to TTF file (or empty string if not to be embedded) *
* afmfile: path to AFM file *
* enc: font encoding (or empty string for symbolic fonts) *
* patch: optional patch for encoding *
* type: font type if fontfile is empty *
*******************************************************************************/
function MakeFont($fontfile, $afmfile, $enc='cp1252', $patch=array(), $type='TrueType')
{
//Generate a font definition file
if(get_magic_quotes_runtime())
@set_magic_quotes_runtime(0);
ini_set('auto_detect_line_endings','1');
if($enc)
{
$map=ReadMap($enc);
foreach($patch as $cc=>$gn)
$map[$cc]=$gn;
}
else
$map=array();
if(!file_exists($afmfile))
die('<b>Error:</b> AFM file not found: '.$afmfile);
$fm=ReadAFM($afmfile,$map);
if($enc)
$diff=MakeFontEncoding($map);
else
$diff='';
$fd=MakeFontDescriptor($fm,empty($map));
//Find font type
if($fontfile)
{
$ext=strtolower(substr($fontfile,-3));
if($ext=='ttf')
$type='TrueType';
elseif($ext=='pfb')
$type='Type1';
else
die('<b>Error:</b> unrecognized font file extension: '.$ext);
}
else
{
if($type!='TrueType' && $type!='Type1')
die('<b>Error:</b> incorrect font type: '.$type);
}
//Start generation
$s='<?php'."\n";
$s.='$type=\''.$type."';\n";
$s.='$name=\''.$fm['FontName']."';\n";
$s.='$desc='.$fd.";\n";
if(!isset($fm['UnderlinePosition']))
$fm['UnderlinePosition']=-100;
if(!isset($fm['UnderlineThickness']))
$fm['UnderlineThickness']=50;
$s.='$up='.$fm['UnderlinePosition'].";\n";
$s.='$ut='.$fm['UnderlineThickness'].";\n";
$w=MakeWidthArray($fm);
$s.='$cw='.$w.";\n";
$s.='$enc=\''.$enc."';\n";
$s.='$diff=\''.$diff."';\n";
$basename=substr(basename($afmfile),0,-4);
if($fontfile)
{
//Embedded font
if(!file_exists($fontfile))
die('<b>Error:</b> font file not found: '.$fontfile);
if($type=='TrueType')
CheckTTF($fontfile);
$f=fopen($fontfile,'rb');
if(!$f)
die('<b>Error:</b> Can\'t open '.$fontfile);
$file=fread($f,filesize($fontfile));
fclose($f);
if($type=='Type1')
{
//Find first two sections and discard third one
$header=(ord($file[0])==128);
if($header)
{
//Strip first binary header
$file=substr($file,6);
}
$pos=strpos($file,'eexec');
if(!$pos)
die('<b>Error:</b> font file does not seem to be valid Type1');
$size1=$pos+6;
if($header && ord($file[$size1])==128)
{
//Strip second binary header
$file=substr($file,0,$size1).substr($file,$size1+6);
}
$pos=strpos($file,'00000000');
if(!$pos)
die('<b>Error:</b> font file does not seem to be valid Type1');
$size2=$pos-$size1;
$file=substr($file,0,$size1+$size2);
}
if(function_exists('gzcompress'))
{
$cmp=$basename.'.z';
SaveToFile($cmp,gzcompress($file),'b');
$s.='$file=\''.$cmp."';\n";
echo 'Font file compressed ('.$cmp.')<br>';
}
else
{
$s.='$file=\''.basename($fontfile)."';\n";
echo '<b>Notice:</b> font file could not be compressed (zlib extension not available)<br>';
}
if($type=='Type1')
{
$s.='$size1='.$size1.";\n";
$s.='$size2='.$size2.";\n";
}
else
$s.='$originalsize='.filesize($fontfile).";\n";
}
else
{
//Not embedded font
$s.='$file='."'';\n";
}
$s.="?>\n";
SaveToFile($basename.'.php',$s,'t');
echo 'Font definition file generated ('.$basename.'.php'.')<br>';
}
?>
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