462 lines
14 KiB
PHP
462 lines
14 KiB
PHP
<?php
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/*******************************************************************************
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* Utility to generate font definition files *
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* *
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* Version: 1.14 *
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* Date: 2008-08-03 *
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* Author: Olivier PLATHEY *
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*******************************************************************************/
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function ReadMap($enc)
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{
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//Read a map file
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$file = dirname(__FILE__) . '/' . strtolower($enc) . '.map';
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$a = file($file);
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if (empty($a)) {
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die('<b>Error:</b> encoding not found: ' . $enc);
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}
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$cc2gn = array();
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foreach ($a as $l) {
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if ($l[0] == '!') {
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$e = preg_split('/[ \\t]+/', rtrim($l));
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$cc = hexdec(substr($e[0], 1));
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$gn = $e[2];
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$cc2gn[$cc] = $gn;
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}
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}
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for ($i = 0; $i <= 255; $i++) {
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if (!isset($cc2gn[$i])) {
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$cc2gn[$i] = '.notdef';
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}
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}
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return $cc2gn;
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}
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function ReadAFM($file, &$map)
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{
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//Read a font metric file
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$a = file($file);
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if (empty($a)) {
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die('File not found');
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}
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$widths = array();
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$fm = array();
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$fix = array(
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'Edot' => 'Edotaccent',
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'edot' => 'edotaccent',
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'Idot' => 'Idotaccent',
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'Zdot' => 'Zdotaccent',
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'zdot' => 'zdotaccent',
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'Odblacute' => 'Ohungarumlaut',
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'odblacute' => 'ohungarumlaut',
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'Udblacute' => 'Uhungarumlaut',
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'udblacute' => 'uhungarumlaut',
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'Gcedilla' => 'Gcommaaccent',
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'gcedilla' => 'gcommaaccent',
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'Kcedilla' => 'Kcommaaccent',
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'kcedilla' => 'kcommaaccent',
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'Lcedilla' => 'Lcommaaccent',
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'lcedilla' => 'lcommaaccent',
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'Ncedilla' => 'Ncommaaccent',
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'ncedilla' => 'ncommaaccent',
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'Rcedilla' => 'Rcommaaccent',
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'rcedilla' => 'rcommaaccent',
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'Scedilla' => 'Scommaaccent',
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'scedilla' => 'scommaaccent',
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'Tcedilla' => 'Tcommaaccent',
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'tcedilla' => 'tcommaaccent',
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'Dslash' => 'Dcroat',
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'dslash' => 'dcroat',
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'Dmacron' => 'Dcroat',
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'dmacron' => 'dcroat',
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'combininggraveaccent' => 'gravecomb',
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'combininghookabove' => 'hookabovecomb',
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'combiningtildeaccent' => 'tildecomb',
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'combiningacuteaccent' => 'acutecomb',
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'combiningdotbelow' => 'dotbelowcomb',
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'dongsign' => 'dong'
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);
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foreach ($a as $l) {
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$e = explode(' ', rtrim($l));
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if (count($e) < 2) {
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continue;
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}
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$code = $e[0];
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$param = $e[1];
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if ($code == 'C') {
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//Character metrics
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$cc = (int)$e[1];
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$w = $e[4];
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$gn = $e[7];
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if (substr($gn, -4) == '20AC') {
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$gn = 'Euro';
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}
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if (isset($fix[$gn])) {
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//Fix incorrect glyph name
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foreach ($map as $c => $n) {
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if ($n == $fix[$gn]) {
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$map[$c] = $gn;
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}
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}
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}
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if (empty($map)) {
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//Symbolic font: use built-in encoding
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$widths[$cc] = $w;
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} else {
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$widths[$gn] = $w;
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if ($gn == 'X') {
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$fm['CapXHeight'] = $e[13];
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}
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}
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if ($gn == '.notdef') {
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$fm['MissingWidth'] = $w;
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}
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} elseif ($code == 'FontName') {
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$fm['FontName'] = $param;
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} elseif ($code == 'Weight') {
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$fm['Weight'] = $param;
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} elseif ($code == 'ItalicAngle') {
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$fm['ItalicAngle'] = (double)$param;
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} elseif ($code == 'Ascender') {
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$fm['Ascender'] = (int)$param;
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} elseif ($code == 'Descender') {
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$fm['Descender'] = (int)$param;
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} elseif ($code == 'UnderlineThickness') {
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$fm['UnderlineThickness'] = (int)$param;
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} elseif ($code == 'UnderlinePosition') {
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$fm['UnderlinePosition'] = (int)$param;
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} elseif ($code == 'IsFixedPitch') {
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$fm['IsFixedPitch'] = ($param == 'true');
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} elseif ($code == 'FontBBox') {
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$fm['FontBBox'] = array(
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$e[1],
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$e[2],
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$e[3],
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$e[4]
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);
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} elseif ($code == 'CapHeight') {
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$fm['CapHeight'] = (int)$param;
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} elseif ($code == 'StdVW') {
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$fm['StdVW'] = (int)$param;
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}
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}
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if (!isset($fm['FontName'])) {
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die('FontName not found');
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}
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if (!empty($map)) {
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if (!isset($widths['.notdef'])) {
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$widths['.notdef'] = 600;
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}
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if (!isset($widths['Delta']) && isset($widths['increment'])) {
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$widths['Delta'] = $widths['increment'];
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}
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//Order widths according to map
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for ($i = 0; $i <= 255; $i++) {
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if (!isset($widths[$map[$i]])) {
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echo '<b>Warning:</b> character ' . $map[$i] . ' is missing<br>';
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$widths[$i] = $widths['.notdef'];
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} else {
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$widths[$i] = $widths[$map[$i]];
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}
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}
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}
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$fm['Widths'] = $widths;
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return $fm;
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}
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function MakeFontDescriptor($fm, $symbolic)
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{
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//Ascent
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$asc = (isset($fm['Ascender']) ? $fm['Ascender'] : 1000);
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$fd = "array('Ascent'=>" . $asc;
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//Descent
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$desc = (isset($fm['Descender']) ? $fm['Descender'] : -200);
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$fd .= ",'Descent'=>" . $desc;
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//CapHeight
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if (isset($fm['CapHeight'])) {
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$ch = $fm['CapHeight'];
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} elseif (isset($fm['CapXHeight'])) {
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$ch = $fm['CapXHeight'];
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} else {
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$ch = $asc;
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}
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$fd .= ",'CapHeight'=>" . $ch;
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//Flags
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$flags = 0;
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if (isset($fm['IsFixedPitch']) && $fm['IsFixedPitch']) {
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$flags += 1 << 0;
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}
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if ($symbolic) {
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$flags += 1 << 2;
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}
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if (!$symbolic) {
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$flags += 1 << 5;
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}
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if (isset($fm['ItalicAngle']) && $fm['ItalicAngle'] != 0) {
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$flags += 1 << 6;
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}
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$fd .= ",'Flags'=>" . $flags;
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//FontBBox
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if (isset($fm['FontBBox'])) {
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$fbb = $fm['FontBBox'];
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} else {
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$fbb = array(
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0,
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$desc - 100,
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1000,
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$asc + 100
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);
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}
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$fd .= ",'FontBBox'=>'[" . $fbb[0] . ' ' . $fbb[1] . ' ' . $fbb[2] . ' ' . $fbb[3] . "]'";
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//ItalicAngle
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$ia = (isset($fm['ItalicAngle']) ? $fm['ItalicAngle'] : 0);
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$fd .= ",'ItalicAngle'=>" . $ia;
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//StemV
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if (isset($fm['StdVW'])) {
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$stemv = $fm['StdVW'];
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} elseif (isset($fm['Weight']) && preg_match('/bold|black/i', $fm['Weight'])) {
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$stemv = 120;
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} else {
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$stemv = 70;
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}
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$fd .= ",'StemV'=>" . $stemv;
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//MissingWidth
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if (isset($fm['MissingWidth'])) {
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$fd .= ",'MissingWidth'=>" . $fm['MissingWidth'];
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}
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$fd .= ')';
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return $fd;
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}
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function MakeWidthArray($fm)
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{
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//Make character width array
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$s = "array(\n\t";
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$cw = $fm['Widths'];
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for ($i = 0; $i <= 255; $i++) {
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if (chr($i) == "'") {
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$s .= "'\\''";
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} elseif (chr($i) == "\\") {
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$s .= "'\\\\'";
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} elseif ($i >= 32 && $i <= 126) {
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$s .= "'" . chr($i) . "'";
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} else {
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$s .= "chr($i)";
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}
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$s .= '=>' . $fm['Widths'][$i];
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if ($i < 255) {
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$s .= ',';
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}
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if (($i + 1) % 22 == 0) {
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$s .= "\n\t";
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}
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}
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$s .= ')';
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return $s;
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}
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function MakeFontEncoding($map)
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{
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//Build differences from reference encoding
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$ref = ReadMap('cp1252');
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$s = '';
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$last = 0;
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for ($i = 32; $i <= 255; $i++) {
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if ($map[$i] != $ref[$i]) {
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if ($i != $last + 1) {
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$s .= $i . ' ';
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}
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$last = $i;
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$s .= '/' . $map[$i] . ' ';
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}
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}
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return rtrim($s);
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}
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function SaveToFile($file, $s, $mode)
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{
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$f = fopen($file, 'w' . $mode);
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if (!$f) {
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die('Can\'t write to file ' . $file);
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}
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fwrite($f, $s, strlen($s));
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fclose($f);
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}
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function ReadShort($f)
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{
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$a = unpack('n1n', fread($f, 2));
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return $a['n'];
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}
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function ReadLong($f)
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{
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$a = unpack('N1N', fread($f, 4));
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return $a['N'];
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}
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function CheckTTF($file)
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{
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//Check if font license allows embedding
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$f = fopen($file, 'rb');
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if (!$f) {
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die('<b>Error:</b> Can\'t open ' . $file);
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}
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//Extract number of tables
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fseek($f, 4, SEEK_CUR);
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$nb = ReadShort($f);
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fseek($f, 6, SEEK_CUR);
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//Seek OS/2 table
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$found = false;
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for ($i = 0; $i < $nb; $i++) {
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if (fread($f, 4) == 'OS/2') {
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$found = true;
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break;
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}
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fseek($f, 12, SEEK_CUR);
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}
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if (!$found) {
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fclose($f);
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return;
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}
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fseek($f, 4, SEEK_CUR);
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$offset = ReadLong($f);
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fseek($f, $offset, SEEK_SET);
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//Extract fsType flags
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fseek($f, 8, SEEK_CUR);
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$fsType = ReadShort($f);
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$rl = ($fsType & 0x02) != 0;
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$pp = ($fsType & 0x04) != 0;
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$e = ($fsType & 0x08) != 0;
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fclose($f);
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if ($rl && !$pp && !$e) {
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echo '<b>Warning:</b> font license does not allow embedding';
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}
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}
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/*******************************************************************************
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* fontfile: path to TTF file (or empty string if not to be embedded) *
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* afmfile: path to AFM file *
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* enc: font encoding (or empty string for symbolic fonts) *
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* patch: optional patch for encoding *
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* type: font type if fontfile is empty *
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*******************************************************************************/
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function MakeFont($fontfile, $afmfile, $enc = 'cp1252', $patch = array(), $type = 'TrueType')
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{
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//Generate a font definition file
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if (get_magic_quotes_runtime()) {
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@set_magic_quotes_runtime(0);
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}
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ini_set('auto_detect_line_endings', '1');
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if ($enc) {
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$map = ReadMap($enc);
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foreach ($patch as $cc => $gn) {
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$map[$cc] = $gn;
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}
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} else {
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$map = array();
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}
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if (!file_exists($afmfile)) {
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die('<b>Error:</b> AFM file not found: ' . $afmfile);
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}
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$fm = ReadAFM($afmfile, $map);
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if ($enc) {
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$diff = MakeFontEncoding($map);
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} else {
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$diff = '';
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}
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$fd = MakeFontDescriptor($fm, empty($map));
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//Find font type
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if ($fontfile) {
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$ext = strtolower(substr($fontfile, -3));
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if ($ext == 'ttf') {
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$type = 'TrueType';
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} elseif ($ext == 'pfb') {
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$type = 'Type1';
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} else {
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die('<b>Error:</b> unrecognized font file extension: ' . $ext);
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}
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} else {
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if ($type != 'TrueType' && $type != 'Type1') {
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die('<b>Error:</b> incorrect font type: ' . $type);
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}
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}
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//Start generation
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$s = '<?php' . "\n";
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$s .= '$type=\'' . $type . "';\n";
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$s .= '$name=\'' . $fm['FontName'] . "';\n";
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$s .= '$desc=' . $fd . ";\n";
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if (!isset($fm['UnderlinePosition'])) {
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$fm['UnderlinePosition'] = -100;
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}
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if (!isset($fm['UnderlineThickness'])) {
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$fm['UnderlineThickness'] = 50;
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}
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$s .= '$up=' . $fm['UnderlinePosition'] . ";\n";
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$s .= '$ut=' . $fm['UnderlineThickness'] . ";\n";
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$w = MakeWidthArray($fm);
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$s .= '$cw=' . $w . ";\n";
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$s .= '$enc=\'' . $enc . "';\n";
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$s .= '$diff=\'' . $diff . "';\n";
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$basename = substr(basename($afmfile), 0, -4);
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if ($fontfile) {
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//Embedded font
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if (!file_exists($fontfile)) {
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die('<b>Error:</b> font file not found: ' . $fontfile);
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}
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if ($type == 'TrueType') {
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CheckTTF($fontfile);
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}
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$f = fopen($fontfile, 'rb');
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if (!$f) {
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die('<b>Error:</b> Can\'t open ' . $fontfile);
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}
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$file = fread($f, filesize($fontfile));
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fclose($f);
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if ($type == 'Type1') {
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//Find first two sections and discard third one
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$header = (ord($file[0]) == 128);
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if ($header) {
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//Strip first binary header
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$file = substr($file, 6);
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}
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$pos = strpos($file, 'eexec');
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if (!$pos) {
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die('<b>Error:</b> font file does not seem to be valid Type1');
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}
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$size1 = $pos + 6;
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if ($header && ord($file[$size1]) == 128) {
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//Strip second binary header
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$file = substr($file, 0, $size1) . substr($file, $size1 + 6);
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}
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$pos = strpos($file, '00000000');
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if (!$pos) {
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die('<b>Error:</b> font file does not seem to be valid Type1');
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}
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$size2 = $pos - $size1;
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$file = substr($file, 0, $size1 + $size2);
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}
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if (function_exists('gzcompress')) {
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$cmp = $basename . '.z';
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SaveToFile($cmp, gzcompress($file), 'b');
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$s .= '$file=\'' . $cmp . "';\n";
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echo 'Font file compressed (' . $cmp . ')<br>';
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} else {
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$s .= '$file=\'' . basename($fontfile) . "';\n";
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echo '<b>Notice:</b> font file could not be compressed (zlib extension not available)<br>';
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}
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if ($type == 'Type1') {
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$s .= '$size1=' . $size1 . ";\n";
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$s .= '$size2=' . $size2 . ";\n";
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} else {
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$s .= '$originalsize=' . filesize($fontfile) . ";\n";
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}
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} else {
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//Not embedded font
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$s .= '$file=' . "'';\n";
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}
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$s .= "?>\n";
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SaveToFile($basename . '.php', $s, 't');
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echo 'Font definition file generated (' . $basename . '.php' . ')<br>';
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}
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