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313 lines
8.4 KiB
313 lines
8.4 KiB
<?php
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/*******************************************************************************
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* Utility to generate font definition files for Unicode Truetype fonts *
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* Version: 1.12 *
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* Date: 2003-12-30 *
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*******************************************************************************/
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function ReadUFM($file, &$cidtogidmap)
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{
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//Prepare empty CIDToGIDMap
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$cidtogidmap = str_pad('', 256*256*2, "\x00");
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//Read a font metric file
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$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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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($code=='U')
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{
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// U 827 ; WX 0 ; N squaresubnosp ; G 675 ;
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//Character metrics
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$cc=(int)$e[1];
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if ($cc != -1) {
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$gn = $e[7];
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$w = $e[4];
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$glyph = $e[10];
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$widths[$cc] = $w;
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if($cc == ord('X'))
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$fm['CapXHeight'] = $e[13];
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// Set GID
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if ($cc >= 0 && $cc < 0xFFFF && $glyph) {
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$cidtogidmap{$cc*2} = chr($glyph >> 8);
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$cidtogidmap{$cc*2 + 1} = chr($glyph & 0xFF);
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}
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}
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if($gn=='.notdef' && !isset($fm['MissingWidth']))
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$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['MissingWidth']))
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$fm['MissingWidth']=600;
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if(!isset($fm['FontName']))
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die('FontName not found');
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$fm['Widths']=$widths;
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return $fm;
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}
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function MakeFontDescriptor($fm)
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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="{'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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$flags+=1<<5;
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if(isset($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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$s="{";
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$cw=$fm['Widths'];
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$els=array();
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$c=0;
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foreach ($cw as $i => $w)
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{
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$els[] = ((($c++)%16==0)?"\n\t":'').$i.'=>'.$w;
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}
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$s .= implode(', ', $els);
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$s.='}';
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return $s;
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}
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function SaveToFile($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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* $ufmfile: path to UFM file *
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*******************************************************************************/
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function MakeFont($fontfile,$ufmfile)
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{
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//Generate a font definition file
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set_magic_quotes_runtime(0);
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if(!file_exists($ufmfile))
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die('<B>Error:</B> UFM file not found: '.$ufmfile);
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$cidtogidmap = '';
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$fm=ReadUFM($ufmfile, $cidtogidmap);
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$fd=MakeFontDescriptor($fm);
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//Find font type
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if($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='TrueTypeUnicode';
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else
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die('<B>Error:</B> not a truetype font: '.$ext);
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}
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else
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{
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if($type!='TrueTypeUnicode')
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die('<B>Error:</B> incorrect font type: '.$type);
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}
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//Start generation
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$basename=strtolower(substr(basename($ufmfile),0,-4));
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$s='TCPDFFontDescriptor.define(\''.$basename."') do |font|\n";
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$s.=" font[:type]='".$type."'\n";
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$s.=" font[:name]='".$fm['FontName']."'\n";
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$s.=" font[: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.=" font[:up]=".$fm['UnderlinePosition']."\n";
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$s.=" font[:ut]=".$fm['UnderlineThickness']."\n";
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$s.=" font[:cw]=".MakeWidthArray($fm)."\n";
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$s.=" font[:enc]=''\n";
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$s.=" font[:diff]=''\n";
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if($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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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($f);
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if(function_exists('gzcompress'))
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{
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$cmp=$basename.'.z';
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SaveToFile($cmp,gzcompress($file),'b');
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$s.=' font[:file]=\''.$cmp."'\n";
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echo 'Font file compressed ('.$cmp.')<BR>';
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$cmp=$basename.'.ctg.z';
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SaveToFile($cmp,gzcompress($cidtogidmap),'b');
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echo 'CIDToGIDMap created and compressed ('.$cmp.')<BR>';
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$s.=' font[:ctg]=\''.$cmp."'\n";
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}
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else
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{
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$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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$cmp=$basename.'.ctg';
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$f = fopen($cmp, 'wb');
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fwrite($f, $cidtogidmap);
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fclose($f);
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echo 'CIDToGIDMap created ('.$cmp.')<BR>';
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$s.=' font[:ctg]=\''.$cmp."'\n";
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}
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if($type=='Type1')
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{
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$s.=' font[:size1]='.$size1."\n";
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$s.=' font[:size2]='.$size2."\n";
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}
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else
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$s.=' font[:originalsize]='.filesize($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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$s.=' font[:file]='."''\n";
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}
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$s.="end\n";
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SaveToFile($basename.'.rb',$s);
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echo 'Font definition file generated ('.$basename.'.rb'.')<BR>';
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}
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$arg = $GLOBALS['argv'];
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if (count($arg) >= 3) {
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ob_start();
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array_shift($arg);
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MakeFont($arg[0], $arg[1]);
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$t = ob_get_clean();
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print preg_replace('!<BR( /)?>!i', "\n", $t);
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}
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else {
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print "Usage: makefontuni_ruby.php <ttf-file> <ufm-file>\n";
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}
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?>
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