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openproject/vendor/plugins/rfpdf/lib/fonts/ttf2ufm/makefontuni_ruby.php

313 lines
8.4 KiB

<?php
/*******************************************************************************
* Utility to generate font definition files for Unicode Truetype fonts *
* Version: 1.12 *
* Date: 2003-12-30 *
*******************************************************************************/
function ReadUFM($file, &$cidtogidmap)
{
//Prepare empty CIDToGIDMap
$cidtogidmap = str_pad('', 256*256*2, "\x00");
//Read a font metric file
$a=file($file);
if(empty($a))
die('File not found');
$widths=array();
$fm=array();
foreach($a as $l)
{
$e=explode(' ',chop($l));
if(count($e)<2)
continue;
$code=$e[0];
$param=$e[1];
if($code=='U')
{
// U 827 ; WX 0 ; N squaresubnosp ; G 675 ;
//Character metrics
$cc=(int)$e[1];
if ($cc != -1) {
$gn = $e[7];
$w = $e[4];
$glyph = $e[10];
$widths[$cc] = $w;
if($cc == ord('X'))
$fm['CapXHeight'] = $e[13];
// Set GID
if ($cc >= 0 && $cc < 0xFFFF && $glyph) {
$cidtogidmap{$cc*2} = chr($glyph >> 8);
$cidtogidmap{$cc*2 + 1} = chr($glyph & 0xFF);
}
}
if($gn=='.notdef' && !isset($fm['MissingWidth']))
$fm['MissingWidth']=$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['MissingWidth']))
$fm['MissingWidth']=600;
if(!isset($fm['FontName']))
die('FontName not found');
$fm['Widths']=$widths;
return $fm;
}
function MakeFontDescriptor($fm)
{
//Ascent
$asc=(isset($fm['Ascender']) ? $fm['Ascender'] : 1000);
$fd="{'Ascent'=>".$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']) and $fm['IsFixedPitch'])
$flags+=1<<0;
$flags+=1<<5;
if(isset($fm['ItalicAngle']) and $fm['ItalicAngle']!=0)
$flags+=1<<6;
$fd.=",'Flags'=>".$flags;
//FontBBox
if(isset($fm['FontBBox']))
$fbb=$fm['FontBBox'];
else
$fbb=array(0,$des-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($fm['Weight']) and eregi('(bold|black)',$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="{";
$cw=$fm['Widths'];
$els=array();
$c=0;
foreach ($cw as $i => $w)
{
$els[] = ((($c++)%16==0)?"\n\t":'').$i.'=>'.$w;
}
$s .= implode(', ', $els);
$s.='}';
return $s;
}
function SaveToFile($file,$s,$mode='t')
{
$f=fopen($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 and !$pp and !$e)
echo '<B>Warning:</B> font license does not allow embedding';
}
/*******************************************************************************
* $fontfile: path to TTF file (or empty string if not to be embedded) *
* $ufmfile: path to UFM file *
*******************************************************************************/
function MakeFont($fontfile,$ufmfile)
{
//Generate a font definition file
set_magic_quotes_runtime(0);
if(!file_exists($ufmfile))
die('<B>Error:</B> UFM file not found: '.$ufmfile);
$cidtogidmap = '';
$fm=ReadUFM($ufmfile, $cidtogidmap);
$fd=MakeFontDescriptor($fm);
//Find font type
if($fontfile)
{
$ext=strtolower(substr($fontfile,-3));
if($ext=='ttf')
$type='TrueTypeUnicode';
else
die('<B>Error:</B> not a truetype font: '.$ext);
}
else
{
if($type!='TrueTypeUnicode')
die('<B>Error:</B> incorrect font type: '.$type);
}
//Start generation
$basename=strtolower(substr(basename($ufmfile),0,-4));
$s='TCPDFFontDescriptor.define(\''.$basename."') do |font|\n";
$s.=" font[:type]='".$type."'\n";
$s.=" font[:name]='".$fm['FontName']."'\n";
$s.=" font[:desc]=".$fd."\n";
if(!isset($fm['UnderlinePosition']))
$fm['UnderlinePosition']=-100;
if(!isset($fm['UnderlineThickness']))
$fm['UnderlineThickness']=50;
$s.=" font[:up]=".$fm['UnderlinePosition']."\n";
$s.=" font[:ut]=".$fm['UnderlineThickness']."\n";
$s.=" font[:cw]=".MakeWidthArray($fm)."\n";
$s.=" font[:enc]=''\n";
$s.=" font[:diff]=''\n";
if($fontfile)
{
//Embedded font
if(!file_exists($fontfile))
die('<B>Error:</B> font file not found: '.$fontfile);
CheckTTF($fontfile);
$f=fopen($fontfile,'rb');
if(!$f)
die('<B>Error:</B> Can\'t open '.$fontfile);
$file=fread($f,filesize($fontfile));
fclose($f);
if(function_exists('gzcompress'))
{
$cmp=$basename.'.z';
SaveToFile($cmp,gzcompress($file),'b');
$s.=' font[:file]=\''.$cmp."'\n";
echo 'Font file compressed ('.$cmp.')<BR>';
$cmp=$basename.'.ctg.z';
SaveToFile($cmp,gzcompress($cidtogidmap),'b');
echo 'CIDToGIDMap created and compressed ('.$cmp.')<BR>';
$s.=' font[:ctg]=\''.$cmp."'\n";
}
else
{
$s.='$file=\''.basename($fontfile)."'\n";
echo '<B>Notice:</B> font file could not be compressed (gzcompress not available)<BR>';
$cmp=$basename.'.ctg';
$f = fopen($cmp, 'wb');
fwrite($f, $cidtogidmap);
fclose($f);
echo 'CIDToGIDMap created ('.$cmp.')<BR>';
$s.=' font[:ctg]=\''.$cmp."'\n";
}
if($type=='Type1')
{
$s.=' font[:size1]='.$size1."\n";
$s.=' font[:size2]='.$size2."\n";
}
else
$s.=' font[:originalsize]='.filesize($fontfile)."\n";
}
else
{
//Not embedded font
$s.=' font[:file]='."''\n";
}
$s.="end\n";
SaveToFile($basename.'.rb',$s);
echo 'Font definition file generated ('.$basename.'.rb'.')<BR>';
}
$arg = $GLOBALS['argv'];
if (count($arg) >= 3) {
ob_start();
array_shift($arg);
MakeFont($arg[0], $arg[1]);
$t = ob_get_clean();
print preg_replace('!<BR( /)?>!i', "\n", $t);
}
else {
print "Usage: makefontuni_ruby.php <ttf-file> <ufm-file>\n";
}
?>