<?php
require_once(_MPDF_PATH.'classes/ttfontsuni.php');
class TTFontFile_Analysis EXTENDS TTFontFile {
// Used to get font information from files in directory
function extractCoreInfo($file, $TTCfontID=0) {
$this->filename = $file;
$this->fh = fopen($file,'rb');
if (!$this->fh) { return ('ERROR - Can\'t open file ' . $file); }
$this->_pos = 0;
$this->charWidths = '';
$this->glyphPos = array();
$this->charToGlyph = array();
$this->tables = array();
$this->otables = array();
$this->ascent = 0;
$this->descent = 0;
$this->numTTCFonts = 0;
$this->TTCFonts = array();
$this->version = $version = $this->read_ulong();
$this->panose = array(); // mPDF 5.0
if ($version==0x4F54544F)
return("ERROR - NOT ADDED as Postscript outlines are not supported - " . $file);
if ($version==0x74746366) {
if ($TTCfontID > 0) {
$this->version = $version = $this->read_ulong(); // TTC Header version now
if (!in_array($version, array(0x00010000,0x00020000)))
return("ERROR - NOT ADDED as Error parsing TrueType Collection: version=".$version." - " . $file);
}
else return("ERROR - Error parsing TrueType Collection - " . $file);
$this->numTTCFonts = $this->read_ulong();
for ($i=1; $i<=$this->numTTCFonts; $i++) {
$this->TTCFonts[$i]['offset'] = $this->read_ulong();
}
$this->seek($this->TTCFonts[$TTCfontID]['offset']);
$this->version = $version = $this->read_ulong(); // TTFont version again now
$this->readTableDirectory(false);
}
else {
if (!in_array($version, array(0x00010000,0x74727565)))
return("ERROR - NOT ADDED as Not a TrueType font: version=".$version." - " . $file);
$this->readTableDirectory(false);
}
/* Included for testing...
$cmap_offset = $this->seek_table("cmap");
$this->skip(2);
$cmapTableCount = $this->read_ushort();
$unicode_cmap_offset = 0;
for ($i=0;$i<$cmapTableCount;$i++) {
$x[$i]['platformId'] = $this->read_ushort();
$x[$i]['encodingId'] = $this->read_ushort();
$x[$i]['offset'] = $this->read_ulong();
$save_pos = $this->_pos;
$x[$i]['format'] = $this->get_ushort($cmap_offset + $x[$i]['offset'] );
$this->seek($save_pos );
}
print_r($x); exit;
*/
///////////////////////////////////
// name - Naming table
///////////////////////////////////
/* Test purposes - displays table of names
$name_offset = $this->seek_table("name");
$format = $this->read_ushort();
if ($format != 0 && $format != 1) // mPDF 5.3.73
die("Unknown name table format ".$format);
$numRecords = $this->read_ushort();
$string_data_offset = $name_offset + $this->read_ushort();
for ($i=0;$i<$numRecords; $i++) {
$x[$i]['platformId'] = $this->read_ushort();
$x[$i]['encodingId'] = $this->read_ushort();
$x[$i]['languageId'] = $this->read_ushort();
$x[$i]['nameId'] = $this->read_ushort();
$x[$i]['length'] = $this->read_ushort();
$x[$i]['offset'] = $this->read_ushort();
$N = '';
if ($x[$i]['platformId'] == 1 && $x[$i]['encodingId'] == 0 && $x[$i]['languageId'] == 0) { // Roman
$opos = $this->_pos;
$N = $this->get_chunk($string_data_offset + $x[$i]['offset'] , $x[$i]['length'] );
$this->_pos = $opos;
$this->seek($opos);
}
else { // Unicode
$opos = $this->_pos;
$this->seek($string_data_offset + $x[$i]['offset'] );
$length = $x[$i]['length'] ;
if ($length % 2 != 0)
$length -= 1;
// die("PostScript name is UTF-16BE string of odd length");
$length /= 2;
$N = '';
while ($length > 0) {
$char = $this->read_ushort();
$N .= (chr($char));
$length -= 1;
}
$this->_pos = $opos;
$this->seek($opos);
}
$x[$i]['names'][$nameId] = $N;
}
print_r($x); exit;
*/
$name_offset = $this->seek_table("name");
$format = $this->read_ushort();
if ($format != 0 && $format != 1) // mPDF 5.3.73
return("ERROR - NOT ADDED as Unknown name table format ".$format." - " . $file);
$numRecords = $this->read_ushort();
$string_data_offset = $name_offset + $this->read_ushort();
$names = array(1=>'',2=>'',3=>'',4=>'',6=>'');
$K = array_keys($names);
$nameCount = count($names);
for ($i=0;$i<$numRecords; $i++) {
$platformId = $this->read_ushort();
$encodingId = $this->read_ushort();
$languageId = $this->read_ushort();
$nameId = $this->read_ushort();
$length = $this->read_ushort();
$offset = $this->read_ushort();
if (!in_array($nameId,$K)) continue;
$N = '';
if ($platformId == 3 && $encodingId == 1 && $languageId == 0x409) { // Microsoft, Unicode, US English, PS Name
$opos = $this->_pos;
$this->seek($string_data_offset + $offset);
if ($length % 2 != 0)
$length += 1;
$length /= 2;
$N = '';
while ($length > 0) {
$char = $this->read_ushort();
$N .= (chr($char));
$length -= 1;
}
$this->_pos = $opos;
$this->seek($opos);
}
else if ($platformId == 1 && $encodingId == 0 && $languageId == 0) { // Macintosh, Roman, English, PS Name
$opos = $this->_pos;
$N = $this->get_chunk($string_data_offset + $offset, $length);
$this->_pos = $opos;
$this->seek($opos);
}
if ($N && $names[$nameId]=='') {
$names[$nameId] = $N;
$nameCount -= 1;
if ($nameCount==0) break;
}
}
if ($names[6])
$psName = preg_replace('/ /','-',$names[6]);
else if ($names[4])
$psName = preg_replace('/ /','-',$names[4]);
else if ($names[1])
$psName = preg_replace('/ /','-',$names[1]);
else
$psName = '';
if (!$names[1] && !$psName)
return("ERROR - NOT ADDED as Could not find valid font name - " . $file);
$this->name = $psName;
if ($names[1]) { $this->familyName = $names[1]; } else { $this->familyName = $psName; }
if ($names[2]) { $this->styleName = $names[2]; } else { $this->styleName = 'Regular'; }
///////////////////////////////////
// head - Font header table
///////////////////////////////////
$this->seek_table("head");
$ver_maj = $this->read_ushort();
$ver_min = $this->read_ushort();
if ($ver_maj != 1)
return('ERROR - NOT ADDED as Unknown head table version '. $ver_maj .'.'. $ver_min." - " . $file);
$this->fontRevision = $this->read_ushort() . $this->read_ushort();
$this->skip(4);
$magic = $this->read_ulong();
if ($magic != 0x5F0F3CF5)
return('ERROR - NOT ADDED as Invalid head table magic ' .$magic." - " . $file);
$this->skip(2);
$this->unitsPerEm = $unitsPerEm = $this->read_ushort();
$scale = 1000 / $unitsPerEm;
$this->skip(24);
$macStyle = $this->read_short();
$this->skip(4);
$indexLocFormat = $this->read_short();
///////////////////////////////////
// OS/2 - OS/2 and Windows metrics table
///////////////////////////////////
$sFamily = '';
$panose = '';
$fsSelection = '';
if (isset($this->tables["OS/2"])) {
$this->seek_table("OS/2");
$this->skip(30);
$sF = $this->read_short();
$sFamily = ($sF >> 8);
$this->_pos += 10; //PANOSE = 10 byte length
$panose = fread($this->fh,10);
$this->panose = array();
for ($p=0;$p<strlen($panose);$p++) { $this->panose[] = ord($panose[$p]); }
$this->skip(20);
$fsSelection = $this->read_short();
}
///////////////////////////////////
// post - PostScript table
///////////////////////////////////
$this->seek_table("post");
$this->skip(4);
$this->italicAngle = $this->read_short() + $this->read_ushort() / 65536.0;
$this->skip(4);
$isFixedPitch = $this->read_ulong();
///////////////////////////////////
// cmap - Character to glyph index mapping table
///////////////////////////////////
$cmap_offset = $this->seek_table("cmap");
$this->skip(2);
$cmapTableCount = $this->read_ushort();
$unicode_cmap_offset = 0;
for ($i=0;$i<$cmapTableCount;$i++) {
$platformID = $this->read_ushort();
$encodingID = $this->read_ushort();
$offset = $this->read_ulong();
$save_pos = $this->_pos;
if (($platformID == 3 && $encodingID == 1) || $platformID == 0) { // Microsoft, Unicode
$format = $this->get_ushort($cmap_offset + $offset);
if ($format == 4) {
if (!$unicode_cmap_offset) $unicode_cmap_offset = $cmap_offset + $offset;
}
}
else if ((($platformID == 3 && $encodingID == 10) || $platformID == 0)) { // Microsoft, Unicode Format 12 table HKCS
$format = $this->get_ushort($cmap_offset + $offset);
if ($format == 12) {
$unicode_cmap_offset = $cmap_offset + $offset;
break;
}
}
$this->seek($save_pos );
}
if (!$unicode_cmap_offset)
return('ERROR - Font ('.$this->filename .') NOT ADDED as it is not Unicode encoded, and cannot be used by mPDF');
$rtl = false;
$indic = false;
$cjk = false;
$sip = false;
$smp = false;
$pua = false;
$puaag = false;
$glyphToChar = array();
$unAGlyphs = '';
// Format 12 CMAP does characters above Unicode BMP i.e. some HKCS characters U+20000 and above
if ($format == 12) {
$this->seek($unicode_cmap_offset + 4);
$length = $this->read_ulong();
$limit = $unicode_cmap_offset + $length;
$this->skip(4);
$nGroups = $this->read_ulong();
for($i=0; $i<$nGroups ; $i++) {
$startCharCode = $this->read_ulong();
$endCharCode = $this->read_ulong();
$startGlyphCode = $this->read_ulong();
if (($endCharCode > 0x20000 && $endCharCode < 0x2A6DF) || ($endCharCode > 0x2F800 && $endCharCode < 0x2FA1F)) {
$sip = true;
}
if ($endCharCode > 0x10000 && $endCharCode < 0x1FFFF) {
$smp = true;
}
if (($endCharCode > 0x0590 && $endCharCode < 0x077F) || ($endCharCode > 0xFE70 && $endCharCode < 0xFEFF) || ($endCharCode > 0xFB50 && $endCharCode < 0xFDFF)) {
$rtl = true;
}
if ($endCharCode > 0x0900 && $endCharCode < 0x0DFF) {
$indic = true;
}
if ($endCharCode > 0xE000 && $endCharCode < 0xF8FF) {
$pua = true;
if ($endCharCode > 0xF500 && $endCharCode < 0xF7FF) {
$puaag = true;
}
}
if (($endCharCode > 0x2E80 && $endCharCode < 0x4DC0) || ($endCharCode > 0x4E00 && $endCharCode < 0xA4CF) || ($endCharCode > 0xAC00 && $endCharCode < 0xD7AF) || ($endCharCode > 0xF900 && $endCharCode < 0xFAFF) || ($endCharCode > 0xFE30 && $endCharCode < 0xFE4F)) {
$cjk = true;
}
$offset = 0;
// Get each glyphToChar - only point if going to analyse un-mapped Arabic Glyphs
if (isset($this->tables['post'])) {
for ($unichar=$startCharCode;$unichar<=$endCharCode;$unichar++) {
$glyph = $startGlyphCode + $offset ;
$offset++;
$glyphToChar[$glyph][] = $unichar;
}
}
}
}
else { // Format 4 CMap
$this->seek($unicode_cmap_offset + 2);
$length = $this->read_ushort();
$limit = $unicode_cmap_offset + $length;
$this->skip(2);
$segCount = $this->read_ushort() / 2;
$this->skip(6);
$endCount = array();
for($i=0; $i<$segCount; $i++) { $endCount[] = $this->read_ushort(); }
$this->skip(2);
$startCount = array();
for($i=0; $i<$segCount; $i++) { $startCount[] = $this->read_ushort(); }
$idDelta = array();
for($i=0; $i<$segCount; $i++) { $idDelta[] = $this->read_short(); }
$idRangeOffset_start = $this->_pos;
$idRangeOffset = array();
for($i=0; $i<$segCount; $i++) { $idRangeOffset[] = $this->read_ushort(); }
for ($n=0;$n<$segCount;$n++) {
if (($endCount[$n] > 0x0590 && $endCount[$n] < 0x077F) || ($endCount[$n] > 0xFE70 && $endCount[$n] < 0xFEFF) || ($endCount[$n] > 0xFB50 && $endCount[$n] < 0xFDFF)) {
$rtl = true;
}
if ($endCount[$n] > 0x0900 && $endCount[$n] < 0x0DFF) {
$indic = true;
}
if (($endCount[$n] > 0x2E80 && $endCount[$n] < 0x4DC0) || ($endCount[$n] > 0x4E00 && $endCount[$n] < 0xA4CF) || ($endCount[$n] > 0xAC00 && $endCount[$n] < 0xD7AF) || ($endCount[$n] > 0xF900 && $endCount[$n] < 0xFAFF) || ($endCount[$n] > 0xFE30 && $endCount[$n] < 0xFE4F)) {
$cjk = true;
}
if ($endCount[$n] > 0xE000 && $endCount[$n] < 0xF8FF) {
$pua = true;
if ($endCount[$n] > 0xF500 && $endCount[$n] < 0xF7FF) {
$puaag = true;
}
}
// Get each glyphToChar - only point if going to analyse un-mapped Arabic Glyphs
if (isset($this->tables['post'])) {
$endpoint = ($endCount[$n] + 1);
for ($unichar=$startCount[$n];$unichar<$endpoint;$unichar++) {
if ($idRangeOffset[$n] == 0)
$glyph = ($unichar + $idDelta[$n]) & 0xFFFF;
else {
$offset = ($unichar - $startCount[$n]) * 2 + $idRangeOffset[$n];
$offset = $idRangeOffset_start + 2 * $n + $offset;
if ($offset >= $limit)
$glyph = 0;
else {
$glyph = $this->get_ushort($offset);
if ($glyph != 0)
$glyph = ($glyph + $idDelta[$n]) & 0xFFFF;
}
}
$glyphToChar[$glyph][] = $unichar;
}
}
}
}
// 'POST' table for un-mapped arabic glyphs
if (isset($this->tables['post'])) {
$this->seek_table("post");
// Only works on Format 2.0
$formata = $this->read_ushort();
$formatb = $this->read_ushort();
if ($formata == 2 && $formatb == 0) {
$this->skip(28);
$nGlyfs = $this->read_ushort();
$glyphNameIndex = array();
for ($i=0; $i<$nGlyfs; $i++) {
$glyphNameIndex[($this->read_ushort())] = $i;
}
$opost = $this->get_table('post');
$ptr = 34+($nGlyfs*2);
for ($i=0; $i<$nGlyfs; $i++) {
$len = ord(substr($opost,$ptr,1));
$ptr++;
$name = substr($opost,$ptr,$len);
$gid = $glyphNameIndex[$i+258];
// Select uni0600.xxx(x) - uni06FF.xxx(x)
if (preg_match('/^uni(06[0-9a-f]{2})\.(fina|medi|init|fin|med|ini)$/i',$name,$m)) {
if (!isset($glyphToChar[$gid]) || (isset($glyphToChar[$gid]) && is_array($glyphToChar[$gid]) && count($glyphToChar[$gid])==1 && $glyphToChar[$gid][0]>57343 && $glyphToChar[$gid][0]<63489)) { // if set in PUA private use area E000-F8FF, or NOT Unicode mapped
$uni = hexdec($m[1]);
$form = strtoupper(substr($m[2],0,1));
// Assign new PUA Unicode between F500 - F7FF
$bit = $uni & 0xFF;
if ($form == 'I') { $bit += 0xF600; }
else if ($form == 'M') { $bit += 0xF700; }
else { $bit += 0xF500; }
$unAGlyphs .= $gid;
$name = 'uni'.strtoupper($m[1]).'.'.strtolower($m[2]);
$unAGlyphs .= ' : '.$name;
$unihexstr = $m[1];
$unAGlyphs .= ' : '.$unihexstr;
$unAGlyphs .= ' : '.$uni;
$unAGlyphs .= ' : '.$form;
// if already set in PUA private use area E000-F8FF
if (isset($glyphToChar[$gid]) && $glyphToChar[$gid][0]>57343 && $glyphToChar[$gid][0]<63489) {
$unAGlyphs .= ' : '.$glyphToChar[$gid][0].' {'.dechex($glyphToChar[$gid][0]).'}';
}
//else $unAGlyphs .= ':';
$unAGlyphs .= ' : '.strtoupper(dechex($bit));
$unAGlyphs .= '<br />';
}
}
$ptr += $len;
}
if ($unAGlyphs) {
$unAGlyphs = 'GID:Name:Unicode base Hex:Dec:Form:PUA Unicode<br />'.$unAGlyphs ;
}
}
}
$bold = false;
$italic = false;
$ftype = '';
if ($macStyle & (1 << 0)) { $bold = true; } // bit 0 bold
else if ($fsSelection & (1 << 5)) { $bold = true; } // 5 BOLD Characters are emboldened
if ($macStyle & (1 << 1)) { $italic = true; } // bit 1 italic
else if ($fsSelection & (1 << 0)) { $italic = true; } // 0 ITALIC Font contains Italic characters, otherwise they are upright
else if ($this->italicAngle <> 0) { $italic = true; }
if ($isFixedPitch ) { $ftype = 'mono'; }
else if ($sFamily >0 && $sFamily <8) { $ftype = 'serif'; }
else if ($sFamily ==8) { $ftype = 'sans'; }
else if ($sFamily ==10) { $ftype = 'cursive'; }
// Use PANOSE
if ($panose) {
$bFamilyType=ord($panose[0]);
if ($bFamilyType==2) {
$bSerifStyle=ord($panose[1]);
if (!$ftype) {
if ($bSerifStyle>1 && $bSerifStyle<11) { $ftype = 'serif'; }
else if ($bSerifStyle>10) { $ftype = 'sans'; }
}
$bProportion=ord($panose[3]);
if ($bProportion==9 || $bProportion==1) { $ftype = 'mono'; } // ==1 i.e. No Fit needed for OCR-a and -b
}
else if ($bFamilyType==3) {
$ftype = 'cursive';
}
}
fclose($this->fh);
return array($this->familyName, $bold, $italic, $ftype, $TTCfontID, $rtl, $indic, $cjk, $sip, $smp, $puaag, $pua, $unAGlyphs);
}
}
?>
