396 lines
9.6 KiB
PHP
396 lines
9.6 KiB
PHP
<?php
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/****************************************************************************
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* Utility to generate font definition files *
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* Version: 1.11 *
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* Date: 2002-11-02 *
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****************************************************************************/
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function ReadMap($enc)
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{
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//Read a map file
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$file=dirname(__FILE__).'/'.strtolower($enc).'.map';
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$a=file($file);
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if(empty($a))
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die('<B>Error:</B> encoding not found: '.$enc);
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$cc2gn=array();
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foreach($a as $l)
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{
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$e=explode(' ',chop($l));
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$cc=hexdec(substr($e[0],1));
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$gn=$e[2];
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$cc2gn[$cc]=$gn;
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}
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for($i=0;$i<=255;$i++)
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if(!isset($cc2gn[$i]))
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$cc2gn[$i]='.notdef';
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return $cc2gn;
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}
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function ReadAFM($file,&$map)
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{
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//Read a font metric file
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$a=file($file);
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if(empty($a))
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die('File not found');
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$widths=array();
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$fm=array();
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$fix=array('Edot'=>'Edotaccent','edot'=>'edotaccent','Idot'=>'Idotaccent','Zdot'=>'Zdotaccent','zdot'=>'zdotaccent',
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'Odblacute'=>'Ohungarumlaut','odblacute'=>'ohungarumlaut','Udblacute'=>'Uhungarumlaut','udblacute'=>'uhungarumlaut',
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'Gcedilla'=>'Gcommaaccent','gcedilla'=>'gcommaaccent','Kcedilla'=>'Kcommaaccent','kcedilla'=>'kcommaaccent',
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'Lcedilla'=>'Lcommaaccent','lcedilla'=>'lcommaaccent','Ncedilla'=>'Ncommaaccent','ncedilla'=>'ncommaaccent',
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'Rcedilla'=>'Rcommaaccent','rcedilla'=>'rcommaaccent','Scedilla'=>'Scommaaccent','scedilla'=>'scommaaccent',
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'Tcedilla'=>'Tcommaaccent','tcedilla'=>'tcommaaccent','Dslash'=>'Dcroat','dslash'=>'dcroat','Dmacron'=>'Dcroat','dmacron'=>'dcroat');
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foreach($a as $l)
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{
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$e=explode(' ',chop($l));
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if(count($e)<2)
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continue;
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$code=$e[0];
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$param=$e[1];
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if($code=='C')
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{
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//Character metrics
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$cc=(int)$e[1];
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$w=$e[4];
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$gn=$e[7];
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if(substr($gn,-4)=='20AC')
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$gn='Euro';
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if(isset($fix[$gn]))
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{
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//Fix incorrect glyph name
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foreach($map as $c=>$n)
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if($n==$fix[$gn])
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$map[$c]=$gn;
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}
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if(empty($map))
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{
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//Symbolic font: use built-in encoding
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$widths[$cc]=$w;
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}
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else
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{
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$widths[$gn]=$w;
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if($gn=='X')
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$fm['CapXHeight']=$e[13];
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}
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if($gn=='.notdef')
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$fm['MissingWidth']=$w;
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}
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elseif($code=='FontName')
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$fm['FontName']=$param;
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elseif($code=='Weight')
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$fm['Weight']=$param;
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elseif($code=='ItalicAngle')
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$fm['ItalicAngle']=(double)$param;
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elseif($code=='Ascender')
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$fm['Ascender']=(int)$param;
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elseif($code=='Descender')
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$fm['Descender']=(int)$param;
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elseif($code=='UnderlineThickness')
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$fm['UnderlineThickness']=(int)$param;
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elseif($code=='UnderlinePosition')
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$fm['UnderlinePosition']=(int)$param;
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elseif($code=='IsFixedPitch')
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$fm['IsFixedPitch']=($param=='true');
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elseif($code=='FontBBox')
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$fm['FontBBox']=array($e[1],$e[2],$e[3],$e[4]);
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elseif($code=='CapHeight')
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$fm['CapHeight']=(int)$param;
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elseif($code=='StdVW')
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$fm['StdVW']=(int)$param;
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}
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if(!isset($fm['FontName']))
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die('FontName not found');
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if(!empty($map))
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{
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if(!isset($widths['.notdef']))
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$widths['.notdef']=600;
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if(!isset($widths['Delta']) and isset($widths['increment']))
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$widths['Delta']=$widths['increment'];
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//Order widths according to map
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for($i=0;$i<=255;$i++)
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{
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if(!isset($widths[$map[$i]]))
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{
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echo '<B>Warning:</B> character '.$map[$i].' is missing<BR>';
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$widths[$i]=$widths['.notdef'];
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}
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else
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$widths[$i]=$widths[$map[$i]];
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}
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}
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$fm['Widths']=$widths;
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return $fm;
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}
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function MakeFontDescriptor($fm,$symbolic)
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{
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//Ascent
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$asc=(isset($fm['Ascender']) ? $fm['Ascender'] : 1000);
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$fd="array('Ascent'=>".$asc;
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//Descent
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$desc=(isset($fm['Descender']) ? $fm['Descender'] : -200);
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$fd.=",'Descent'=>".$desc;
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//CapHeight
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if(isset($fm['CapHeight']))
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$ch=$fm['CapHeight'];
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elseif(isset($fm['CapXHeight']))
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$ch=$fm['CapXHeight'];
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else
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$ch=$asc;
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$fd.=",'CapHeight'=>".$ch;
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//Flags
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$flags=0;
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if(isset($fm['IsFixedPitch']) and $fm['IsFixedPitch'])
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$flags+=1<<0;
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if($symbolic)
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$flags+=1<<2;
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if(!$symbolic)
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$flags+=1<<5;
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if(isset($fm['ItalicAngle']) and $fm['ItalicAngle']!=0)
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$flags+=1<<6;
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$fd.=",'Flags'=>".$flags;
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//FontBBox
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if(isset($fm['FontBBox']))
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$fbb=$fm['FontBBox'];
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else
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$fbb=array(0,$des-100,1000,$asc+100);
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$fd.=",'FontBBox'=>'[".$fbb[0].' '.$fbb[1].' '.$fbb[2].' '.$fbb[3]."]'";
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//ItalicAngle
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$ia=(isset($fm['ItalicAngle']) ? $fm['ItalicAngle'] : 0);
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$fd.=",'ItalicAngle'=>".$ia;
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//StemV
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if(isset($fm['StdVW']))
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$stemv=$fm['StdVW'];
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elseif(isset($fm['Weight']) and eregi('(bold|black)',$fm['Weight']))
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$stemv=120;
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else
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$stemv=70;
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$fd.=",'StemV'=>".$stemv;
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//MissingWidth
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if(isset($fm['MissingWidth']))
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$fd.=",'MissingWidth'=>".$fm['MissingWidth'];
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$fd.=')';
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return $fd;
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}
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function MakeWidthArray($fm)
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{
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//Make character width array
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$s="array(\n\t";
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$cw=$fm['Widths'];
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for($i=0;$i<=255;$i++)
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{
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if(chr($i)=="'")
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$s.="'\\''";
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elseif(chr($i)=="\\")
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$s.="'\\\\'";
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elseif($i>=32 and $i<=126)
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$s.="'".chr($i)."'";
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else
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$s.="chr($i)";
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$s.="=>".$fm['Widths'][$i];
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if($i<255)
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$s.=",";
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if(($i+1)%22==0)
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$s.="\n\t";
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}
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$s.=")";
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return $s;
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}
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function MakeFontEncoding($map)
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{
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//Build differences from reference encoding
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$ref=ReadMap('cp1252');
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$s='';
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$last=0;
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for($i=32;$i<=255;$i++)
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{
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if($map[$i]!=$ref[$i])
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{
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if($i!=$last+1)
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$s.=$i.' ';
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$last=$i;
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$s.='/'.$map[$i].' ';
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}
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}
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return chop($s);
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}
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function SaveToFile($file,$s,$mode='t')
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{
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$f=fopen($file,'w'.$mode);
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if(!$f)
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die('Can\'t write to file '.$file);
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fwrite($f,$s,strlen($s));
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fclose($f);
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}
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function ReadShort($f)
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{
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$a=unpack('n1n',fread($f,2));
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return $a['n'];
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}
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function ReadLong($f)
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{
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$a=unpack('N1N',fread($f,4));
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return $a['N'];
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}
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function CheckTTF($file)
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{
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//Check if font license allows embedding
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$f=fopen($file,'rb');
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if(!$f)
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die('<B>Error:</B> Can\'t open '.$file);
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//Extract number of tables
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fseek($f,4,SEEK_CUR);
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$nb=ReadShort($f);
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fseek($f,6,SEEK_CUR);
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//Seek OS/2 table
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$found=false;
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for($i=0;$i<$nb;$i++)
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{
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if(fread($f,4)=='OS/2')
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{
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$found=true;
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break;
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}
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fseek($f,12,SEEK_CUR);
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}
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if(!$found)
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{
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fclose($f);
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return;
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}
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fseek($f,4,SEEK_CUR);
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$offset=ReadLong($f);
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fseek($f,$offset,SEEK_SET);
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//Extract fsType flags
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fseek($f,8,SEEK_CUR);
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$fsType=ReadShort($f);
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$rl=($fsType & 0x02)!=0;
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$pp=($fsType & 0x04)!=0;
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$e=($fsType & 0x08)!=0;
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fclose($f);
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if($rl and !$pp and !$e)
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echo '<B>Warning:</B> font license does not allow embedding';
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}
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/****************************************************************************
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* $fontfile: path to TTF file (or empty string if not to be embedded) *
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* $afmfile: path to AFM file *
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* $enc: font encoding (or empty string for symbolic fonts) *
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* $patch: optional patch for encoding *
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* $type : font type if $fontfile is empty *
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****************************************************************************/
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function MakeFont($fontfile,$afmfile,$enc='cp1252',$patch=array(),$type='TrueType')
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{
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//Generate a font definition file
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set_magic_quotes_runtime(0);
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if($enc)
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{
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$map=ReadMap($enc);
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foreach($patch as $cc=>$gn)
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$map[$cc]=$gn;
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}
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else
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$map=array();
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if(!file_exists($afmfile))
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die('<B>Error:</B> AFM file not found: '.$afmfile);
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$fm=ReadAFM($afmfile,$map);
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if($enc)
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$diff=MakeFontEncoding($map);
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else
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$diff='';
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$fd=MakeFontDescriptor($fm,empty($map));
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//Find font type
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if($fontfile)
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{
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$ext=strtolower(substr($fontfile,-3));
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if($ext=='ttf')
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$type='TrueType';
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elseif($ext=='pfb')
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$type='Type1';
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else
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die('<B>Error:</B> unrecognized font file extension: '.$ext);
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}
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else
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{
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if($type!='TrueType' and $type!='Type1')
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die('<B>Error:</B> incorrect font type: '.$type);
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}
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//Start generation
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$s='<?php'."\n";
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$s.='$type=\''.$type."';\n";
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$s.='$name=\''.$fm['FontName']."';\n";
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$s.='$desc='.$fd.";\n";
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if(!isset($fm['UnderlinePosition']))
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$fm['UnderlinePosition']=-100;
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if(!isset($fm['UnderlineThickness']))
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$fm['UnderlineThickness']=50;
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$s.='$up='.$fm['UnderlinePosition'].";\n";
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$s.='$ut='.$fm['UnderlineThickness'].";\n";
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$w=MakeWidthArray($fm);
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$s.='$cw='.$w.";\n";
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$s.='$enc=\''.$enc."';\n";
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$s.='$diff=\''.$diff."';\n";
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$basename=substr(basename($afmfile),0,-4);
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if($fontfile)
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{
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//Embedded font
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if(!file_exists($fontfile))
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die('<B>Error:</B> font file not found: '.$fontfile);
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if($type=='TrueType')
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CheckTTF($fontfile);
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$f=fopen($fontfile,'rb');
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if(!$f)
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die('<B>Error:</B> Can\'t open '.$fontfile);
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$file=fread($f,filesize($fontfile));
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fclose($f);
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if($type=='Type1')
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{
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//Find first two sections and discard third one
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$pos=strpos($file,'eexec');
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if(!$pos)
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die('<B>Error:</B> font file does not seem to be valid Type1');
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$size1=$pos+6;
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$pos=strpos($file,'00000000');
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if(!$pos)
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die('<B>Error:</B> font file does not seem to be valid Type1');
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$size2=$pos-$size1;
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$file=substr($file,0,$size1+$size2);
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}
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if(function_exists('gzcompress'))
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{
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$cmp=$basename.'.z';
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SaveToFile($cmp,gzcompress($file),'b');
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$s.='$file=\''.$cmp."';\n";
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echo 'Font file compressed ('.$cmp.')<BR>';
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}
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else
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{
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$s.='$file=\''.basename($fontfile)."';\n";
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echo '<B>Notice:</B> font file could not be compressed (gzcompress not available)<BR>';
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}
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if($type=='Type1')
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{
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$s.='$size1='.$size1.";\n";
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$s.='$size2='.$size2.";\n";
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}
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else
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$s.='$originalsize='.filesize($fontfile).";\n";
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}
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else
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{
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//Not embedded font
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$s.='$file='."'';\n";
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}
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$s.="?>\n";
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SaveToFile($basename.'.php',$s);
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echo 'Font definition file generated ('.$basename.'.php'.')<BR>';
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}
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?>
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