<?php
/*******************************************************************************
* Utility to generate font definition files *
* *
* Version: 1.3 *
* Date: 2015-11-29 *
* Author: Olivier PLATHEY *
*******************************************************************************/
require('ttfparser.php');
function Message($txt, $severity='')
{
if(PHP_SAPI=='cli')
{
if($severity)
echo "$severity: ";
echo "$txt\n";
}
else
{
if($severity)
echo "<b>$severity</b>: ";
echo "$txt<br>";
}
}
function Notice($txt)
{
Message($txt, 'Notice');
}
function Warning($txt)
{
Message($txt, 'Warning');
}
function Error($txt)
{
Message($txt, 'Error');
exit;
}
function LoadMap($enc)
{
$file = dirname(__FILE__).'/'.strtolower($enc).'.map';
$a = file($file);
if(empty($a))
Error('Encoding not found: '.$enc);
$map = array_fill(0, 256, array('uv'=>-1, 'name'=>'.notdef'));
foreach($a as $line)
{
$e = explode(' ', rtrim($line));
$c = hexdec(substr($e[0],1));
$uv = hexdec(substr($e[1],2));
$name = $e[2];
$map[$c] = array('uv'=>$uv, 'name'=>$name);
}
return $map;
}
function GetInfoFromTrueType($file, $embed, $subset, $map)
{
// Return information from a TrueType font
try
{
$ttf = new TTFParser($file);
$ttf->Parse();
}
catch(Exception $e)
{
Error($e->getMessage());
}
if($embed)
{
if(!$ttf->embeddable)
Error('Font license does not allow embedding');
if($subset)
{
$chars = array();
foreach($map as $v)
{
if($v['name']!='.notdef')
$chars[] = $v['uv'];
}
$ttf->Subset($chars);
$info['Data'] = $ttf->Build();
}
else
$info['Data'] = file_get_contents($file);
$info['OriginalSize'] = strlen($info['Data']);
}
$k = 1000/$ttf->unitsPerEm;
$info['FontName'] = $ttf->postScriptName;
$info['Bold'] = $ttf->bold;
$info['ItalicAngle'] = $ttf->italicAngle;
$info['IsFixedPitch'] = $ttf->isFixedPitch;
$info['Ascender'] = round($k*$ttf->typoAscender);
$info['Descender'] = round($k*$ttf->typoDescender);
$info['UnderlineThickness'] = round($k*$ttf->underlineThickness);
$info['UnderlinePosition'] = round($k*$ttf->underlinePosition);
$info['FontBBox'] = array(round($k*$ttf->xMin), round($k*$ttf->yMin), round($k*$ttf->xMax), round($k*$ttf->yMax));
$info['CapHeight'] = round($k*$ttf->capHeight);
$info['MissingWidth'] = round($k*$ttf->glyphs[0]['w']);
$widths = array_fill(0, 256, $info['MissingWidth']);
foreach($map as $c=>$v)
{
if($v['name']!='.notdef')
{
if(isset($ttf->chars[$v['uv']]))
{
$id = $ttf->chars[$v['uv']];
$w = $ttf->glyphs[$id]['w'];
$widths[$c] = round($k*$w);
}
else
Warning('Character '.$v['name'].' is missing');
}
}
$info['Widths'] = $widths;
return $info;
}
function GetInfoFromType1($file, $embed, $map)
{
// Return information from a Type1 font
if($embed)
{
$f = fopen($file, 'rb');
if(!$f)
Error('Can\'t open font file');
// Read first segment
$a = unpack('Cmarker/Ctype/Vsize', fread($f,6));
if($a['marker']!=128)
Error('Font file is not a valid binary Type1');
$size1 = $a['size'];
$data = fread($f, $size1);
// Read second segment
$a = unpack('Cmarker/Ctype/Vsize', fread($f,6));
if($a['marker']!=128)
Error('Font file is not a valid binary Type1');
$size2 = $a['size'];
$data .= fread($f, $size2);
fclose($f);
$info['Data'] = $data;
$info['Size1'] = $size1;
$info['Size2'] = $size2;
}
$afm = substr($file, 0, -3).'afm';
if(!file_exists($afm))
Error('AFM font file not found: '.$afm);
$a = file($afm);
if(empty($a))
Error('AFM file empty or not readable');
foreach($a as $line)
{
$e = explode(' ', rtrim($line));
if(count($e)<2)
continue;
$entry = $e[0];
if($entry=='C')
{
$w = $e[4];
$name = $e[7];
$cw[$name] = $w;
}
elseif($entry=='FontName')
$info['FontName'] = $e[1];
elseif($entry=='Weight')
$info['Weight'] = $e[1];
elseif($entry=='ItalicAngle')
$info['ItalicAngle'] = (int)$e[1];
elseif($entry=='Ascender')
$info['Ascender'] = (int)$e[1];
elseif($entry=='Descender')
$info['Descender'] = (int)$e[1];
elseif($entry=='UnderlineThickness')
$info['UnderlineThickness'] = (int)$e[1];
elseif($entry=='UnderlinePosition')
$info['UnderlinePosition'] = (int)$e[1];
elseif($entry=='IsFixedPitch')
$info['IsFixedPitch'] = ($e[1]=='true');
elseif($entry=='FontBBox')
$info['FontBBox'] = array((int)$e[1], (int)$e[2], (int)$e[3], (int)$e[4]);
elseif($entry=='CapHeight')
$info['CapHeight'] = (int)$e[1];
elseif($entry=='StdVW')
$info['StdVW'] = (int)$e[1];
}
if(!isset($info['FontName']))
Error('FontName missing in AFM file');
if(!isset($info['Ascender']))
$info['Ascender'] = $info['FontBBox'][3];
if(!isset($info['Descender']))
$info['Descender'] = $info['FontBBox'][1];
$info['Bold'] = isset($info['Weight']) && preg_match('/bold|black/i', $info['Weight']);
if(isset($cw['.notdef']))
$info['MissingWidth'] = $cw['.notdef'];
else
$info['MissingWidth'] = 0;
$widths = array_fill(0, 256, $info['MissingWidth']);
foreach($map as $c=>$v)
{
if($v['name']!='.notdef')
{
if(isset($cw[$v['name']]))
$widths[$c] = $cw[$v['name']];
else
Warning('Character '.$v['name'].' is missing');
}
}
$info['Widths'] = $widths;
return $info;
}
function MakeFontDescriptor($info)
{
// Ascent
$fd = "array('Ascent'=>".$info['Ascender'];
// Descent
$fd .= ",'Descent'=>".$info['Descender'];
// CapHeight
if(!empty($info['CapHeight']))
$fd .= ",'CapHeight'=>".$info['CapHeight'];
else
$fd .= ",'CapHeight'=>".$info['Ascender'];
// Flags
$flags = 0;
if($info['IsFixedPitch'])
$flags += 1<<0;
$flags += 1<<5;
if($info['ItalicAngle']!=0)
$flags += 1<<6;
$fd .= ",'Flags'=>".$flags;
// FontBBox
$fbb = $info['FontBBox'];
$fd .= ",'FontBBox'=>'[".$fbb[0].' '.$fbb[1].' '.$fbb[2].' '.$fbb[3]."]'";
// ItalicAngle
$fd .= ",'ItalicAngle'=>".$info['ItalicAngle'];
// StemV
if(isset($info['StdVW']))
$stemv = $info['StdVW'];
elseif($info['Bold'])
$stemv = 120;
else
$stemv = 70;
$fd .= ",'StemV'=>".$stemv;
// MissingWidth
$fd .= ",'MissingWidth'=>".$info['MissingWidth'].')';
return $fd;
}
function MakeWidthArray($widths)
{
$s = "array(\n\t";
for($c=0;$c<=255;$c++)
{
if(chr($c)=="'")
$s .= "'\\''";
elseif(chr($c)=="\\")
$s .= "'\\\\'";
elseif($c>=32 && $c<=126)
$s .= "'".chr($c)."'";
else
$s .= "chr($c)";
$s .= '=>'.$widths[$c];
if($c<255)
$s .= ',';
if(($c+1)%22==0)
$s .= "\n\t";
}
$s .= ')';
return $s;
}
function MakeFontEncoding($map)
{
// Build differences from reference encoding
$ref = LoadMap('cp1252');
$s = '';
$last = 0;
for($c=32;$c<=255;$c++)
{
if($map[$c]['name']!=$ref[$c]['name'])
{
if($c!=$last+1)
$s .= $c.' ';
$last = $c;
$s .= '/'.$map[$c]['name'].' ';
}
}
return rtrim($s);
}
function MakeUnicodeArray($map)
{
// Build mapping to Unicode values
$ranges = array();
foreach($map as $c=>$v)
{
$uv = $v['uv'];
if($uv!=-1)
{
if(isset($range))
{
if($c==$range[1]+1 && $uv==$range[3]+1)
{
$range[1]++;
$range[3]++;
}
else
{
$ranges[] = $range;
$range = array($c, $c, $uv, $uv);
}
}
else
$range = array($c, $c, $uv, $uv);
}
}
$ranges[] = $range;
foreach($ranges as $range)
{
if(isset($s))
$s .= ',';
else
$s = 'array(';
$s .= $range[0].'=>';
$nb = $range[1]-$range[0]+1;
if($nb>1)
$s .= 'array('.$range[2].','.$nb.')';
else
$s .= $range[2];
}
$s .= ')';
return $s;
}
function SaveToFile($file, $s, $mode)
{
$f = fopen($file, 'w'.$mode);
if(!$f)
Error('Can\'t write to file '.$file);
fwrite($f, $s);
fclose($f);
}
function MakeDefinitionFile($file, $type, $enc, $embed, $subset, $map, $info)
{
$s = "<?php\n";
$s .= '$type = \''.$type."';\n";
$s .= '$name = \''.$info['FontName']."';\n";
$s .= '$desc = '.MakeFontDescriptor($info).";\n";
$s .= '$up = '.$info['UnderlinePosition'].";\n";
$s .= '$ut = '.$info['UnderlineThickness'].";\n";
$s .= '$cw = '.MakeWidthArray($info['Widths']).";\n";
$s .= '$enc = \''.$enc."';\n";
$diff = MakeFontEncoding($map);
if($diff)
$s .= '$diff = \''.$diff."';\n";
$s .= '$uv = '.MakeUnicodeArray($map).";\n";
if($embed)
{
$s .= '$file = \''.$info['File']."';\n";
if($type=='Type1')
{
$s .= '$size1 = '.$info['Size1'].";\n";
$s .= '$size2 = '.$info['Size2'].";\n";
}
else
{
$s .= '$originalsize = '.$info['OriginalSize'].";\n";
if($subset)
$s .= "\$subsetted = true;\n";
}
}
$s .= "?>\n";
SaveToFile($file, $s, 't');
}
function MakeFont($fontfile, $enc='cp1252', $embed=true, $subset=true)
{
// Generate a font definition file
if(get_magic_quotes_runtime())
@set_magic_quotes_runtime(false);
ini_set('auto_detect_line_endings', '1');
if(!file_exists($fontfile))
Error('Font file not found: '.$fontfile);
$ext = strtolower(substr($fontfile,-3));
if($ext=='ttf' || $ext=='otf')
$type = 'TrueType';
elseif($ext=='pfb')
$type = 'Type1';
else
Error('Unrecognized font file extension: '.$ext);
$map = LoadMap($enc);
if($type=='TrueType')
$info = GetInfoFromTrueType($fontfile, $embed, $subset, $map);
else
$info = GetInfoFromType1($fontfile, $embed, $map);
$basename = substr(basename($fontfile), 0, -4);
if($embed)
{
if(function_exists('gzcompress'))
{
$file = $basename.'.z';
SaveToFile($file, gzcompress($info['Data']), 'b');
$info['File'] = $file;
Message('Font file compressed: '.$file);
}
else
{
$info['File'] = basename($fontfile);
$subset = false;
Notice('Font file could not be compressed (zlib extension not available)');
}
}
MakeDefinitionFile($basename.'.php', $type, $enc, $embed, $subset, $map, $info);
Message('Font definition file generated: '.$basename.'.php');
}
if(PHP_SAPI=='cli')
{
// Command-line interface
ini_set('log_errors', '0');
if($argc==1)
die("Usage: php makefont.php fontfile [encoding] [embed] [subset]\n");
$fontfile = $argv[1];
if($argc>=3)
$enc = $argv[2];
else
$enc = 'cp1252';
if($argc>=4)
$embed = ($argv[3]=='true' || $argv[3]=='1');
else
$embed = true;
if($argc>=5)
$subset = ($argv[4]=='true' || $argv[4]=='1');
else
$subset = true;
MakeFont($fontfile, $enc, $embed, $subset);
}
?>
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