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