Project import generated by Copybara.
GitOrigin-RevId: 63746295f1a5ab5a619056791995793d65529e62
diff --git a/src/lib/fpdf/makefont/makefont.php b/src/lib/fpdf/makefont/makefont.php
new file mode 100644
index 0000000..fbe8dcf
--- /dev/null
+++ b/src/lib/fpdf/makefont/makefont.php
@@ -0,0 +1,447 @@
+<?php
+/*******************************************************************************
+* Utility to generate font definition files *
+* *
+* Version: 1.31 *
+* Date: 2019-12-07 *
+* 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, $subset=true)
+{
+ // Generate a font definition file
+ if(!file_exists($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);
+}
+?>