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1843 lines
64 KiB
1843 lines
64 KiB
/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- / |
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/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */ |
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"use strict"; |
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var isWorker = (typeof window == "undefined"); |
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|
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/** |
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* Maximum file size of the font. |
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*/ |
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var kMaxFontFileSize = 40000; |
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/** |
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* Maximum time to wait for a font to be loaded by @font-face |
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*/ |
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var kMaxWaitForFontFace = 1000; |
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/** |
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* Useful for debugging when you want to certains operations depending on how |
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* many fonts are loaded. |
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*/ |
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var fontCount = 0; |
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var fontName = ""; |
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/** |
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* If for some reason one want to debug without fonts activated, it just need |
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* to turn this pref to true/false. |
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*/ |
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var kDisableFonts = false; |
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/** |
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* Hold a map of decoded fonts and of the standard fourteen Type1 fonts and |
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* their acronyms. |
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* TODO Add the standard fourteen Type1 fonts list by default |
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* http://cgit.freedesktop.org/poppler/poppler/tree/poppler/GfxFont.cc#n65 |
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*/ |
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var Fonts = (function Fonts() { |
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var kScalePrecision = 40; |
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var fonts = Object.create(null); |
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if (!isWorker) { |
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var ctx = document.createElement("canvas").getContext("2d"); |
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ctx.scale(1 / kScalePrecision, 1); |
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} |
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function Font(name, data, properties) { |
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this.name = name; |
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this.data = data; |
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this.properties = properties; |
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this.loading = true; |
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this.charsCache = Object.create(null); |
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this.sizes = []; |
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} |
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var current; |
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var charsCache; |
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var measureCache; |
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return { |
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registerFont: function fonts_registerFont(fontName, data, properties) { |
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fonts[fontName] = new Font(fontName, data, properties); |
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}, |
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blacklistFont: function fonts_blacklistFont(fontName) { |
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registerFont(fontName, null, {}); |
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markLoaded(fontName); |
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}, |
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lookup: function fonts_lookup(fontName) { |
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return fonts[fontName]; |
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}, |
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setActive: function fonts_setActive(fontName, size) { |
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current = fonts[fontName]; |
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charsCache = current.charsCache; |
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var sizes = current.sizes; |
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if (!(measureCache = sizes[size])) |
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measureCache = sizes[size] = Object.create(null); |
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ctx.font = (size * kScalePrecision) + 'px "' + fontName + '"'; |
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}, |
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charsToUnicode: function fonts_chars2Unicode(chars) { |
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if (!charsCache) |
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return chars; |
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// if we translated this string before, just grab it from the cache |
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var str = charsCache[chars]; |
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if (str) |
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return str; |
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// translate the string using the font's encoding |
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var encoding = current.properties.encoding; |
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if (!encoding) |
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return chars; |
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str = ""; |
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for (var i = 0; i < chars.length; ++i) { |
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var charcode = chars.charCodeAt(i); |
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var unicode = encoding[charcode]; |
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// Check if the glyph has already been converted |
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if (!IsNum(unicode)) |
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unicode = encoding[unicode] = GlyphsUnicode[unicode.name]; |
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// Handle surrogate pairs |
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if (unicode > 0xFFFF) { |
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str += String.fromCharCode(unicode & 0xFFFF); |
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unicode >>= 16; |
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} |
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str += String.fromCharCode(unicode); |
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} |
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// Enter the translated string into the cache |
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return charsCache[chars] = str; |
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}, |
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measureText: function fonts_measureText(text) { |
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var width; |
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if (measureCache && (width = measureCache[text])) |
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return width; |
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width = ctx.measureText(text).width / kScalePrecision; |
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if (measureCache) |
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measureCache[text] = width; |
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return width; |
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} |
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} |
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})(); |
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var FontLoader = { |
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listeningForFontLoad: false, |
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bind: function(fonts, callback) { |
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function checkFontsLoaded() { |
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for (var i = 0; i < fonts.length; i++) { |
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var font = fonts[i]; |
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if (Fonts.lookup(font.name).loading) { |
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return false; |
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} |
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} |
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document.documentElement.removeEventListener( |
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"pdfjsFontLoad", checkFontsLoaded, false); |
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callback(); |
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return true; |
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} |
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var rules = [ ], names = [ ]; |
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for (var i = 0; i < fonts.length; i++) { |
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var font = fonts[i]; |
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if (!Fonts.lookup(font.name)) { |
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var obj = new Font(font.name, font.file, font.properties); |
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var str = ""; |
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var data = Fonts.lookup(font.name).data; |
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var length = data.length; |
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for (var j = 0; j < length; j++) |
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str += String.fromCharCode(data[j]); |
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var rule = isWorker ? obj.bindWorker(str) : obj.bindDOM(str); |
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if (rule) { |
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rules.push(rule); |
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names.push(font.name); |
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} |
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} |
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} |
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if (!isWorker && rules.length) { |
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FontLoader.prepareFontLoadEvent(rules, names); |
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} |
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if (!checkFontsLoaded()) { |
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document.documentElement.addEventListener( |
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"pdfjsFontLoad", checkFontsLoaded, false); |
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} |
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return; |
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}, |
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// Set things up so that at least one pdfjsFontLoad event is |
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// dispatched when all the @font-face |rules| for |names| have been |
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// loaded in a subdocument. It's expected that the load of |rules| |
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// has already started in this (outer) document, so that they should |
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// be ordered before the load in the subdocument. |
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prepareFontLoadEvent: function(rules, names) { |
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/** Hack begin */ |
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// There's no event when a font has finished downloading so the |
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// following code is a dirty hack to 'guess' when a font is |
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// ready. This code will be obsoleted by Mozilla bug 471915. |
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// |
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// The only reliable way to know if a font is loaded in Gecko |
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// (at the moment) is document.onload in a document with |
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// a @font-face rule defined in a "static" stylesheet. We use a |
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// subdocument in an <iframe>, set up properly, to know when |
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// our @font-face rule was loaded. However, the subdocument and |
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// outer document can't share CSS rules, so the inner document |
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// is only part of the puzzle. The second piece is an invisible |
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// div created in order to force loading of the @font-face in |
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// the *outer* document. (The font still needs to be loaded for |
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// its metrics, for reflow). We create the div first for the |
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// outer document, then create the iframe. Unless something |
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// goes really wonkily, we expect the @font-face for the outer |
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// document to be processed before the inner. That's still |
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// fragile, but seems to work in practice. |
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// |
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// The postMessage() hackery was added to work around chrome bug |
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// 82402. |
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var div = document.createElement("div"); |
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div.setAttribute("style", |
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'visibility: hidden;'+ |
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'width: 10px; height: 10px;'+ |
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'position: absolute; top: 0px; left: 0px;'); |
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var html = ''; |
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for (var i = 0; i < names.length; ++i) { |
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html += '<span style="font-family:'+ names[i] +'">Hi</span>'; |
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} |
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div.innerHTML = html; |
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document.body.appendChild(div); |
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if (!this.listeneningForFontLoad) { |
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window.addEventListener( |
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"message", |
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function(e) { |
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var fontNames = JSON.parse(e.data); |
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for (var i = 0; i < fontNames.length; ++i) { |
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var font = Fonts.lookup(fontNames[i]); |
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font.loading = false; |
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} |
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var evt = document.createEvent("Events"); |
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evt.initEvent("pdfjsFontLoad", true, false); |
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document.documentElement.dispatchEvent(evt); |
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}, |
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false); |
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this.listeneningForFontLoad = true; |
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} |
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// XXX we should have a time-out here too, and maybe fire |
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// pdfjsFontLoadFailed? |
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var src = '<!DOCTYPE HTML><html><head>'; |
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src += '<style type="text/css">'; |
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for (var i = 0; i < rules.length; ++i) { |
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src += rules[i]; |
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} |
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src += '</style>' |
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src += '<script type="application/javascript">' |
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var fontNamesArray = ''; |
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for (var i = 0; i < names.length; ++i) { |
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fontNamesArray += '"'+ names[i] + '", '; |
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} |
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src += ' var fontNames=['+ fontNamesArray +'];\n'; |
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src += ' window.onload = function () {\n' |
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src += ' top.postMessage(JSON.stringify(fontNames), "*");\n'; |
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src += ' }'; |
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src += '</script></head><body>'; |
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for (var i = 0; i < names.length; ++i) { |
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src += '<p style="font-family:\''+ fontName +'\'">Hi</p>'; |
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} |
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src += '</body></html>'; |
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var frame = document.createElement("iframe"); |
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frame.src = 'data:text/html,'+ src; |
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frame.setAttribute("style", |
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'visibility: hidden;'+ |
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'width: 10px; height: 10px;'+ |
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'position: absolute; top: 0px; left: 0px;'); |
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document.body.appendChild(frame); |
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/** Hack end */ |
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} |
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}; |
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var UnicodeRanges = [ |
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{ "begin": 0x0000, "end": 0x007F }, // Basic Latin |
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{ "begin": 0x0080, "end": 0x00FF }, // Latin-1 Supplement |
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{ "begin": 0x0100, "end": 0x017F }, // Latin Extended-A |
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{ "begin": 0x0180, "end": 0x024F }, // Latin Extended-B |
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{ "begin": 0x0250, "end": 0x02AF }, // IPA Extensions |
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{ "begin": 0x02B0, "end": 0x02FF }, // Spacing Modifier Letters |
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{ "begin": 0x0300, "end": 0x036F }, // Combining Diacritical Marks |
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{ "begin": 0x0370, "end": 0x03FF }, // Greek and Coptic |
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{ "begin": 0x2C80, "end": 0x2CFF }, // Coptic |
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{ "begin": 0x0400, "end": 0x04FF }, // Cyrillic |
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{ "begin": 0x0530, "end": 0x058F }, // Armenian |
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{ "begin": 0x0590, "end": 0x05FF }, // Hebrew |
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{ "begin": 0xA500, "end": 0xA63F }, // Vai |
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{ "begin": 0x0600, "end": 0x06FF }, // Arabic |
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{ "begin": 0x07C0, "end": 0x07FF }, // NKo |
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{ "begin": 0x0900, "end": 0x097F }, // Devanagari |
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{ "begin": 0x0980, "end": 0x09FF }, // Bengali |
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{ "begin": 0x0A00, "end": 0x0A7F }, // Gurmukhi |
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{ "begin": 0x0A80, "end": 0x0AFF }, // Gujarati |
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{ "begin": 0x0B00, "end": 0x0B7F }, // Oriya |
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{ "begin": 0x0B80, "end": 0x0BFF }, // Tamil |
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{ "begin": 0x0C00, "end": 0x0C7F }, // Telugu |
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{ "begin": 0x0C80, "end": 0x0CFF }, // Kannada |
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{ "begin": 0x0D00, "end": 0x0D7F }, // Malayalam |
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{ "begin": 0x0E00, "end": 0x0E7F }, // Thai |
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{ "begin": 0x0E80, "end": 0x0EFF }, // Lao |
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{ "begin": 0x10A0, "end": 0x10FF }, // Georgian |
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{ "begin": 0x1B00, "end": 0x1B7F }, // Balinese |
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{ "begin": 0x1100, "end": 0x11FF }, // Hangul Jamo |
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{ "begin": 0x1E00, "end": 0x1EFF }, // Latin Extended Additional |
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{ "begin": 0x1F00, "end": 0x1FFF }, // Greek Extended |
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{ "begin": 0x2000, "end": 0x206F }, // General Punctuation |
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{ "begin": 0x2070, "end": 0x209F }, // Superscripts And Subscripts |
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{ "begin": 0x20A0, "end": 0x20CF }, // Currency Symbol |
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{ "begin": 0x20D0, "end": 0x20FF }, // Combining Diacritical Marks For Symbols |
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{ "begin": 0x2100, "end": 0x214F }, // Letterlike Symbols |
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{ "begin": 0x2150, "end": 0x218F }, // Number Forms |
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{ "begin": 0x2190, "end": 0x21FF }, // Arrows |
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{ "begin": 0x2200, "end": 0x22FF }, // Mathematical Operators |
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{ "begin": 0x2300, "end": 0x23FF }, // Miscellaneous Technical |
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{ "begin": 0x2400, "end": 0x243F }, // Control Pictures |
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{ "begin": 0x2440, "end": 0x245F }, // Optical Character Recognition |
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{ "begin": 0x2460, "end": 0x24FF }, // Enclosed Alphanumerics |
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{ "begin": 0x2500, "end": 0x257F }, // Box Drawing |
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{ "begin": 0x2580, "end": 0x259F }, // Block Elements |
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{ "begin": 0x25A0, "end": 0x25FF }, // Geometric Shapes |
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{ "begin": 0x2600, "end": 0x26FF }, // Miscellaneous Symbols |
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{ "begin": 0x2700, "end": 0x27BF }, // Dingbats |
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{ "begin": 0x3000, "end": 0x303F }, // CJK Symbols And Punctuation |
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{ "begin": 0x3040, "end": 0x309F }, // Hiragana |
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{ "begin": 0x30A0, "end": 0x30FF }, // Katakana |
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{ "begin": 0x3100, "end": 0x312F }, // Bopomofo |
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{ "begin": 0x3130, "end": 0x318F }, // Hangul Compatibility Jamo |
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{ "begin": 0xA840, "end": 0xA87F }, // Phags-pa |
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{ "begin": 0x3200, "end": 0x32FF }, // Enclosed CJK Letters And Months |
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{ "begin": 0x3300, "end": 0x33FF }, // CJK Compatibility |
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{ "begin": 0xAC00, "end": 0xD7AF }, // Hangul Syllables |
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{ "begin": 0xD800, "end": 0xDFFF }, // Non-Plane 0 * |
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{ "begin": 0x10900, "end": 0x1091F }, // Phoenicia |
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{ "begin": 0x4E00, "end": 0x9FFF }, // CJK Unified Ideographs |
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{ "begin": 0xE000, "end": 0xF8FF }, // Private Use Area (plane 0) |
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{ "begin": 0x31C0, "end": 0x31EF }, // CJK Strokes |
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{ "begin": 0xFB00, "end": 0xFB4F }, // Alphabetic Presentation Forms |
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{ "begin": 0xFB50, "end": 0xFDFF }, // Arabic Presentation Forms-A |
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{ "begin": 0xFE20, "end": 0xFE2F }, // Combining Half Marks |
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{ "begin": 0xFE10, "end": 0xFE1F }, // Vertical Forms |
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{ "begin": 0xFE50, "end": 0xFE6F }, // Small Form Variants |
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{ "begin": 0xFE70, "end": 0xFEFF }, // Arabic Presentation Forms-B |
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{ "begin": 0xFF00, "end": 0xFFEF }, // Halfwidth And Fullwidth Forms |
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{ "begin": 0xFFF0, "end": 0xFFFF }, // Specials |
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{ "begin": 0x0F00, "end": 0x0FFF }, // Tibetan |
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{ "begin": 0x0700, "end": 0x074F }, // Syriac |
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{ "begin": 0x0780, "end": 0x07BF }, // Thaana |
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{ "begin": 0x0D80, "end": 0x0DFF }, // Sinhala |
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{ "begin": 0x1000, "end": 0x109F }, // Myanmar |
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{ "begin": 0x1200, "end": 0x137F }, // Ethiopic |
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{ "begin": 0x13A0, "end": 0x13FF }, // Cherokee |
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{ "begin": 0x1400, "end": 0x167F }, // Unified Canadian Aboriginal Syllabics |
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{ "begin": 0x1680, "end": 0x169F }, // Ogham |
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{ "begin": 0x16A0, "end": 0x16FF }, // Runic |
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{ "begin": 0x1780, "end": 0x17FF }, // Khmer |
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{ "begin": 0x1800, "end": 0x18AF }, // Mongolian |
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{ "begin": 0x2800, "end": 0x28FF }, // Braille Patterns |
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{ "begin": 0xA000, "end": 0xA48F }, // Yi Syllables |
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{ "begin": 0x1700, "end": 0x171F }, // Tagalog |
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{ "begin": 0x10300, "end": 0x1032F }, // Old Italic |
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{ "begin": 0x10330, "end": 0x1034F }, // Gothic |
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{ "begin": 0x10400, "end": 0x1044F }, // Deseret |
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{ "begin": 0x1D000, "end": 0x1D0FF }, // Byzantine Musical Symbols |
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{ "begin": 0x1D400, "end": 0x1D7FF }, // Mathematical Alphanumeric Symbols |
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{ "begin": 0xFF000, "end": 0xFFFFD }, // Private Use (plane 15) |
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{ "begin": 0xFE00, "end": 0xFE0F }, // Variation Selectors |
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{ "begin": 0xE0000, "end": 0xE007F }, // Tags |
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{ "begin": 0x1900, "end": 0x194F }, // Limbu |
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{ "begin": 0x1950, "end": 0x197F }, // Tai Le |
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{ "begin": 0x1980, "end": 0x19DF }, // New Tai Lue |
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{ "begin": 0x1A00, "end": 0x1A1F }, // Buginese |
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{ "begin": 0x2C00, "end": 0x2C5F }, // Glagolitic |
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{ "begin": 0x2D30, "end": 0x2D7F }, // Tifinagh |
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{ "begin": 0x4DC0, "end": 0x4DFF }, // Yijing Hexagram Symbols |
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{ "begin": 0xA800, "end": 0xA82F }, // Syloti Nagri |
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{ "begin": 0x10000, "end": 0x1007F }, // Linear B Syllabary |
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{ "begin": 0x10140, "end": 0x1018F }, // Ancient Greek Numbers |
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{ "begin": 0x10380, "end": 0x1039F }, // Ugaritic |
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{ "begin": 0x103A0, "end": 0x103DF }, // Old Persian |
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{ "begin": 0x10450, "end": 0x1047F }, // Shavian |
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{ "begin": 0x10480, "end": 0x104AF }, // Osmanya |
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{ "begin": 0x10800, "end": 0x1083F }, // Cypriot Syllabary |
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{ "begin": 0x10A00, "end": 0x10A5F }, // Kharoshthi |
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{ "begin": 0x1D300, "end": 0x1D35F }, // Tai Xuan Jing Symbols |
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{ "begin": 0x12000, "end": 0x123FF }, // Cuneiform |
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{ "begin": 0x1D360, "end": 0x1D37F }, // Counting Rod Numerals |
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{ "begin": 0x1B80, "end": 0x1BBF }, // Sundanese |
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{ "begin": 0x1C00, "end": 0x1C4F }, // Lepcha |
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{ "begin": 0x1C50, "end": 0x1C7F }, // Ol Chiki |
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{ "begin": 0xA880, "end": 0xA8DF }, // Saurashtra |
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{ "begin": 0xA900, "end": 0xA92F }, // Kayah Li |
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{ "begin": 0xA930, "end": 0xA95F }, // Rejang |
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{ "begin": 0xAA00, "end": 0xAA5F }, // Cham |
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{ "begin": 0x10190, "end": 0x101CF }, // Ancient Symbols |
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{ "begin": 0x101D0, "end": 0x101FF }, // Phaistos Disc |
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{ "begin": 0x102A0, "end": 0x102DF }, // Carian |
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{ "begin": 0x1F030, "end": 0x1F09F } // Domino Tiles |
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]; |
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|
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function getUnicodeRangeFor(value) { |
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for (var i = 0; i < UnicodeRanges.length; i++) { |
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var range = UnicodeRanges[i]; |
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if (value >= range.begin && value < range.end) |
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return i; |
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} |
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return -1; |
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}; |
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|
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/** |
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* 'Font' is the class the outside world should use, it encapsulate all the font |
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* decoding logics whatever type it is (assuming the font type is supported). |
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* |
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* For example to read a Type1 font and to attach it to the document: |
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* var type1Font = new Font("MyFontName", binaryFile, propertiesObject); |
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* type1Font.bind(); |
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*/ |
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var Font = (function () { |
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var constructor = function font_constructor(name, file, properties) { |
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this.name = name; |
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this.encoding = properties.encoding; |
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|
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// If the font has already been decoded simply return it |
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if (Fonts.lookup(name)) { |
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this.font = Fonts.lookup(name).data; |
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return; |
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} |
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fontCount++; |
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fontName = name; |
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|
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// If the font is to be ignored, register it like an already loaded font |
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// to avoid the cost of waiting for it be be loaded by the platform. |
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if (properties.ignore || kDisableFonts) { |
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Fonts.blacklistFont(name); |
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return; |
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} |
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|
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var data; |
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switch (properties.type) { |
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case "Type1": |
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var cff = new CFF(name, file, properties); |
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this.mimetype = "font/opentype"; |
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|
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// Wrap the CFF data inside an OTF font file |
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data = this.convert(name, cff, properties); |
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break; |
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|
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case "TrueType": |
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this.mimetype = "font/opentype"; |
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|
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// Repair the TrueType file if it is can be damaged in the point of |
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// view of the sanitizer |
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data = this.checkAndRepair(name, file, properties); |
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break; |
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|
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default: |
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warn("Font " + properties.type + " is not supported"); |
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break; |
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} |
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this.data = data; |
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Fonts.registerFont(name, data, properties); |
|
}; |
|
|
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function stringToArray(str) { |
|
var array = []; |
|
for (var i = 0; i < str.length; ++i) |
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array[i] = str.charCodeAt(i); |
|
|
|
return array; |
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}; |
|
|
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function int16(bytes) { |
|
return (bytes[0] << 8) + (bytes[1] & 0xff); |
|
}; |
|
|
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function int32(bytes) { |
|
return (bytes[0] << 24) + (bytes[1] << 16) + |
|
(bytes[2] << 8) + (bytes[3] & 0xff); |
|
}; |
|
|
|
function getMaxPower2(number) { |
|
var maxPower = 0; |
|
var value = number; |
|
while (value >= 2) { |
|
value /= 2; |
|
maxPower++; |
|
} |
|
|
|
value = 2; |
|
for (var i = 1; i < maxPower; i++) |
|
value *= 2; |
|
return value; |
|
}; |
|
|
|
function string16(value) { |
|
return String.fromCharCode((value >> 8) & 0xff) + |
|
String.fromCharCode(value & 0xff); |
|
}; |
|
|
|
function string32(value) { |
|
return String.fromCharCode((value >> 24) & 0xff) + |
|
String.fromCharCode((value >> 16) & 0xff) + |
|
String.fromCharCode((value >> 8) & 0xff) + |
|
String.fromCharCode(value & 0xff); |
|
}; |
|
|
|
function createOpenTypeHeader(sfnt, file, offsets, numTables) { |
|
// sfnt version (4 bytes) |
|
var header = sfnt; |
|
|
|
// numTables (2 bytes) |
|
header += string16(numTables); |
|
|
|
// searchRange (2 bytes) |
|
var tablesMaxPower2 = getMaxPower2(numTables); |
|
var searchRange = tablesMaxPower2 * 16; |
|
header += string16(searchRange); |
|
|
|
// entrySelector (2 bytes) |
|
header += string16(Math.log(tablesMaxPower2) / Math.log(2)); |
|
|
|
// rangeShift (2 bytes) |
|
header += string16(numTables * 16 - searchRange); |
|
|
|
file.set(stringToArray(header), offsets.currentOffset); |
|
offsets.currentOffset += header.length; |
|
offsets.virtualOffset += header.length; |
|
}; |
|
|
|
function createTableEntry(file, offsets, tag, data) { |
|
// offset |
|
var offset = offsets.virtualOffset; |
|
|
|
// length |
|
var length = data.length; |
|
|
|
// Per spec tables must be 4-bytes align so add padding as needed |
|
while (data.length & 3) |
|
data.push(0x00); |
|
|
|
while (offsets.virtualOffset & 3) |
|
offsets.virtualOffset++; |
|
|
|
// checksum |
|
var checksum = 0; |
|
for (var i = 0; i < length; i+=4) |
|
checksum += int16([data[i], data[i+1], data[i+2], data[i+3]]); |
|
|
|
var tableEntry = tag + string32(checksum) + string32(offset) + string32(length); |
|
tableEntry = stringToArray(tableEntry); |
|
file.set(tableEntry, offsets.currentOffset); |
|
|
|
offsets.currentOffset += tableEntry.length; |
|
offsets.virtualOffset += data.length; |
|
}; |
|
|
|
function getRanges(glyphs) { |
|
// Array.sort() sorts by characters, not numerically, so convert to an |
|
// array of characters. |
|
var codes = []; |
|
var length = glyphs.length; |
|
for (var n = 0; n < length; ++n) |
|
codes.push(String.fromCharCode(glyphs[n].unicode)) |
|
codes.sort(); |
|
|
|
// Split the sorted codes into ranges. |
|
var ranges = []; |
|
for (var n = 0; n < length; ) { |
|
var start = codes[n++].charCodeAt(0); |
|
var end = start; |
|
while (n < length && end + 1 == codes[n].charCodeAt(0)) { |
|
++end; |
|
++n; |
|
} |
|
ranges.push([start, end]); |
|
} |
|
return ranges; |
|
}; |
|
|
|
function createCMapTable(glyphs) { |
|
glyphs.push({ unicode: 0x0000 }); |
|
var ranges = getRanges(glyphs); |
|
|
|
var numTables = 1; |
|
var cmap = "\x00\x00" + // version |
|
string16(numTables) + // numTables |
|
"\x00\x03" + // platformID |
|
"\x00\x01" + // encodingID |
|
string32(4 + numTables * 8); // start of the table record |
|
|
|
var headerSize = (12 * 2 + (ranges.length * 5 * 2)); |
|
var segCount = ranges.length + 1; |
|
var segCount2 = segCount * 2; |
|
var searchRange = getMaxPower2(segCount) * 2; |
|
var searchEntry = Math.log(segCount) / Math.log(2); |
|
var rangeShift = 2 * segCount - searchRange; |
|
|
|
var format314 = "\x00\x04" + // format |
|
string16(headerSize) + // length |
|
"\x00\x00" + // language |
|
string16(segCount2) + |
|
string16(searchRange) + |
|
string16(searchEntry) + |
|
string16(rangeShift); |
|
|
|
// Fill up the 4 parallel arrays describing the segments. |
|
var startCount = ""; |
|
var endCount = ""; |
|
var idDeltas = ""; |
|
var idRangeOffsets = ""; |
|
var glyphsIds = ""; |
|
var bias = 0; |
|
for (var i = 0; i < segCount - 1; i++) { |
|
var range = ranges[i]; |
|
var start = range[0]; |
|
var end = range[1]; |
|
var delta = (bias - start) % 0xffff; |
|
bias += (end - start + 1); |
|
|
|
startCount += string16(start); |
|
endCount += string16(end); |
|
idDeltas += string16(delta); |
|
idRangeOffsets += string16(0); |
|
|
|
for (var j = start; j <= end; j++) { |
|
glyphsIds += string16(j); |
|
} |
|
} |
|
|
|
endCount += "\xFF\xFF"; |
|
startCount += "\xFF\xFF"; |
|
idDeltas += "\x00\x01"; |
|
idRangeOffsets += "\x00\x00"; |
|
format314 += endCount + "\x00\x00" + startCount + |
|
idDeltas + idRangeOffsets + glyphsIds; |
|
|
|
return stringToArray(cmap + format314); |
|
}; |
|
|
|
function createOS2Table(properties) { |
|
var ulUnicodeRange1 = 0; |
|
var ulUnicodeRange2 = 0; |
|
var ulUnicodeRange3 = 0; |
|
var ulUnicodeRange4 = 0; |
|
|
|
var charset = properties.charset; |
|
if (charset && charset.length) { |
|
var firstCharIndex = null; |
|
var lastCharIndex = 0; |
|
|
|
for (var i = 1; i < charset.length; i++) { |
|
var code = GlyphsUnicode[charset[i]]; |
|
if (firstCharIndex > code || !firstCharIndex) |
|
firstCharIndex = code; |
|
if (lastCharIndex < code) |
|
lastCharIndex = code; |
|
|
|
var position = getUnicodeRangeFor(code); |
|
if (position < 32) { |
|
ulUnicodeRange1 |= 1 << position; |
|
} else if (position < 64) { |
|
ulUnicodeRange2 |= 1 << position - 32; |
|
} else if (position < 96) { |
|
ulUnicodeRange3 |= 1 << position - 64; |
|
} else if (position < 123) { |
|
ulUnicodeRange4 |= 1 << position - 96; |
|
} else { |
|
error("Unicode ranges Bits > 123 are reserved for internal usage"); |
|
} |
|
} |
|
} |
|
|
|
return "\x00\x03" + // version |
|
"\x02\x24" + // xAvgCharWidth |
|
"\x01\xF4" + // usWeightClass |
|
"\x00\x05" + // usWidthClass |
|
"\x00\x00" + // fstype (0 to let the font loads via font-face on IE) |
|
"\x02\x8A" + // ySubscriptXSize |
|
"\x02\xBB" + // ySubscriptYSize |
|
"\x00\x00" + // ySubscriptXOffset |
|
"\x00\x8C" + // ySubscriptYOffset |
|
"\x02\x8A" + // ySuperScriptXSize |
|
"\x02\xBB" + // ySuperScriptYSize |
|
"\x00\x00" + // ySuperScriptXOffset |
|
"\x01\xDF" + // ySuperScriptYOffset |
|
"\x00\x31" + // yStrikeOutSize |
|
"\x01\x02" + // yStrikeOutPosition |
|
"\x00\x00" + // sFamilyClass |
|
"\x00\x00\x06" + String.fromCharCode(properties.fixedPitch ? 0x09 : 0x00) + |
|
"\x00\x00\x00\x00\x00\x00" + // Panose |
|
string32(ulUnicodeRange1) + // ulUnicodeRange1 (Bits 0-31) |
|
string32(ulUnicodeRange2) + // ulUnicodeRange2 (Bits 32-63) |
|
string32(ulUnicodeRange3) + // ulUnicodeRange3 (Bits 64-95) |
|
string32(ulUnicodeRange4) + // ulUnicodeRange4 (Bits 96-127) |
|
"\x2A\x32\x31\x2A" + // achVendID |
|
string16(properties.italicAngle ? 1 : 0) + // fsSelection |
|
string16(firstCharIndex || properties.firstChar) + // usFirstCharIndex |
|
string16(lastCharIndex || properties.lastChar) + // usLastCharIndex |
|
string16(properties.ascent) + // sTypoAscender |
|
string16(properties.descent) + // sTypoDescender |
|
"\x00\x64" + // sTypoLineGap (7%-10% of the unitsPerEM value) |
|
string16(properties.ascent) + // usWinAscent |
|
string16(-properties.descent) + // usWinDescent |
|
"\x00\x00\x00\x00" + // ulCodePageRange1 (Bits 0-31) |
|
"\x00\x00\x00\x00" + // ulCodePageRange2 (Bits 32-63) |
|
string16(properties.xHeight) + // sxHeight |
|
string16(properties.capHeight) + // sCapHeight |
|
string16(0) + // usDefaultChar |
|
string16(firstCharIndex || properties.firstChar) + // usBreakChar |
|
"\x00\x03"; // usMaxContext |
|
}; |
|
|
|
function createPostTable(properties) { |
|
var angle = Math.floor(properties.italicAngle * (Math.pow(2, 16))); |
|
return "\x00\x03\x00\x00" + // Version number |
|
string32(angle) + // italicAngle |
|
"\x00\x00" + // underlinePosition |
|
"\x00\x00" + // underlineThickness |
|
string32(properties.fixedPitch) + // isFixedPitch |
|
"\x00\x00\x00\x00" + // minMemType42 |
|
"\x00\x00\x00\x00" + // maxMemType42 |
|
"\x00\x00\x00\x00" + // minMemType1 |
|
"\x00\x00\x00\x00"; // maxMemType1 |
|
}; |
|
|
|
constructor.prototype = { |
|
name: null, |
|
font: null, |
|
mimetype: null, |
|
encoding: null, |
|
|
|
checkAndRepair: function font_checkAndRepair(name, font, properties) { |
|
function readTableEntry(file) { |
|
// tag |
|
var tag = file.getBytes(4); |
|
tag = String.fromCharCode(tag[0]) + |
|
String.fromCharCode(tag[1]) + |
|
String.fromCharCode(tag[2]) + |
|
String.fromCharCode(tag[3]); |
|
|
|
var checksum = int32(file.getBytes(4)); |
|
var offset = int32(file.getBytes(4)); |
|
var length = int32(file.getBytes(4)); |
|
|
|
// Read the table associated data |
|
var previousPosition = file.pos; |
|
file.pos = file.start ? file.start : 0; |
|
file.skip(offset); |
|
var data = file.getBytes(length); |
|
file.pos = previousPosition; |
|
|
|
return { |
|
tag: tag, |
|
checksum: checksum, |
|
length: offset, |
|
offset: length, |
|
data: data |
|
} |
|
}; |
|
|
|
function readOpenTypeHeader(ttf) { |
|
return { |
|
version: ttf.getBytes(4), |
|
numTables: int16(ttf.getBytes(2)), |
|
searchRange: int16(ttf.getBytes(2)), |
|
entrySelector: int16(ttf.getBytes(2)), |
|
rangeShift: int16(ttf.getBytes(2)) |
|
} |
|
}; |
|
|
|
function replaceCMapTable(cmap, font, properties) { |
|
font.pos = (font.start ? font.start : 0) + cmap.length; |
|
|
|
var version = int16(font.getBytes(2)); |
|
var numTables = int16(font.getBytes(2)); |
|
|
|
for (var i = 0; i < numTables; i++) { |
|
var platformID = int16(font.getBytes(2)); |
|
var encodingID = int16(font.getBytes(2)); |
|
var offset = int32(font.getBytes(4)); |
|
var format = int16(font.getBytes(2)); |
|
var length = int16(font.getBytes(2)); |
|
var language = int16(font.getBytes(2)); |
|
|
|
if ((format == 0 && numTables == 1) || |
|
(format == 6 && numTables == 1 && !properties.encoding.empty)) { |
|
// Format 0 alone is not allowed by the sanitizer so let's rewrite |
|
// that to a 3-1-4 Unicode BMP table |
|
TODO("Use an other source of informations than charset here, it is not reliable"); |
|
var charset = properties.charset; |
|
var glyphs = []; |
|
for (var j = 0; j < charset.length; j++) { |
|
glyphs.push({ |
|
unicode: GlyphsUnicode[charset[j]] || 0 |
|
}); |
|
} |
|
|
|
cmap.data = createCMapTable(glyphs); |
|
} else if (format == 6 && numTables == 1) { |
|
// Format 6 is a 2-bytes dense mapping, which means the font data |
|
// lives glue together even if they are pretty far in the unicode |
|
// table. (This looks weird, so I can have missed something), this |
|
// works on Linux but seems to fails on Mac so let's rewrite the |
|
// cmap table to a 3-1-4 style |
|
var firstCode = int16(font.getBytes(2)); |
|
var entryCount = int16(font.getBytes(2)); |
|
|
|
var glyphs = []; |
|
var min = 0xffff, max = 0; |
|
for (var j = 0; j < entryCount; j++) { |
|
var charcode = int16(font.getBytes(2)); |
|
glyphs.push(charcode); |
|
|
|
if (charcode < min) |
|
min = charcode; |
|
if (charcode > max) |
|
max = charcode; |
|
} |
|
|
|
// Since Format 6 is a dense array, check for gaps |
|
for (var j = min; j < max; j++) { |
|
if (glyphs.indexOf(j) == -1) |
|
glyphs.push(j); |
|
} |
|
|
|
for (var j = 0; j < glyphs.length; j++) |
|
glyphs[j] = { unicode: glyphs[j] + firstCode }; |
|
|
|
var ranges= getRanges(glyphs); |
|
assert(ranges.length == 1, "Got " + ranges.length + " ranges in a dense array"); |
|
|
|
var encoding = properties.encoding; |
|
var denseRange = ranges[0]; |
|
var start = denseRange[0]; |
|
var end = denseRange[1]; |
|
var index = firstCode; |
|
for (var j = start; j <= end; j++) |
|
encoding[index++] = glyphs[j - firstCode - 1].unicode; |
|
cmap.data = createCMapTable(glyphs); |
|
} |
|
} |
|
}; |
|
|
|
// Check that required tables are present |
|
var requiredTables = [ "OS/2", "cmap", "head", "hhea", |
|
"hmtx", "maxp", "name", "post" ]; |
|
|
|
var header = readOpenTypeHeader(font); |
|
var numTables = header.numTables; |
|
|
|
// This keep a reference to the CMap and the post tables since they can |
|
// be rewritted |
|
var cmap, post; |
|
|
|
var tables = []; |
|
for (var i = 0; i < numTables; i++) { |
|
var table = readTableEntry(font); |
|
var index = requiredTables.indexOf(table.tag); |
|
if (index != -1) { |
|
if (table.tag == "cmap") |
|
cmap = table; |
|
else if (table.tag == "post") |
|
post = table; |
|
|
|
requiredTables.splice(index, 1); |
|
} |
|
tables.push(table); |
|
} |
|
|
|
// If any tables are still in the array this means some required tables are |
|
// missing, which means that we need to rebuild the font in order to pass |
|
// the sanitizer. |
|
if (requiredTables.length && requiredTables[0] == "OS/2") { |
|
// Create a new file to hold the new version of our truetype with a new |
|
// header and new offsets |
|
var ttf = new Uint8Array(kMaxFontFileSize); |
|
|
|
// The offsets object holds at the same time a representation of where |
|
// to write the table entry information about a table and another offset |
|
// representing the offset where to put the actual data of a particular |
|
// table |
|
var numTables = header.numTables + requiredTables.length; |
|
var offsets = { |
|
currentOffset: 0, |
|
virtualOffset: numTables * (4 * 4) |
|
}; |
|
|
|
// The new numbers of tables will be the last one plus the num of missing |
|
// tables |
|
createOpenTypeHeader("\x00\x01\x00\x00", ttf, offsets, numTables); |
|
|
|
// Insert the missing table |
|
tables.push({ |
|
tag: "OS/2", |
|
data: stringToArray(createOS2Table(properties)) |
|
}); |
|
|
|
// Replace the old CMAP table with a shiny new one |
|
replaceCMapTable(cmap, font, properties); |
|
|
|
// Rewrite the 'post' table if needed |
|
if (!post) { |
|
tables.push({ |
|
tag: "post", |
|
data: stringToArray(createPostTable(properties)) |
|
}); |
|
} |
|
|
|
// Tables needs to be written by ascendant alphabetic order |
|
tables.sort(function tables_sort(a, b) { |
|
return (a.tag > b.tag) - (a.tag < b.tag); |
|
}); |
|
|
|
// rewrite the tables but tweak offsets |
|
for (var i = 0; i < tables.length; i++) { |
|
var table = tables[i]; |
|
var data = []; |
|
|
|
var tableData = table.data; |
|
for (var j = 0; j < tableData.length; j++) |
|
data.push(tableData[j]); |
|
createTableEntry(ttf, offsets, table.tag, data); |
|
} |
|
|
|
// Add the table datas |
|
for (var i = 0; i < tables.length; i++) { |
|
var table = tables[i]; |
|
var tableData = table.data; |
|
ttf.set(tableData, offsets.currentOffset); |
|
offsets.currentOffset += tableData.length; |
|
|
|
// 4-byte aligned data |
|
while (offsets.currentOffset & 3) |
|
offsets.currentOffset++; |
|
} |
|
|
|
var fontData = []; |
|
for (var i = 0; i < offsets.currentOffset; i++) |
|
fontData.push(ttf[i]); |
|
|
|
return fontData; |
|
} else if (requiredTables.length) { |
|
error("Table " + requiredTables[0] + " is missing from the TrueType font"); |
|
} |
|
|
|
return font.getBytes(); |
|
}, |
|
|
|
convert: function font_convert(fontName, font, properties) { |
|
function createNameTable(name) { |
|
// All the strings of the name table should be an odd number of bytes |
|
if (name.length % 2) |
|
name = name.slice(0, name.length - 1); |
|
|
|
var strings = [ |
|
"Original licence", // 0.Copyright |
|
name, // 1.Font family |
|
"Unknown", // 2.Font subfamily (font weight) |
|
"uniqueID", // 3.Unique ID |
|
name, // 4.Full font name |
|
"Version 0.11", // 5.Version |
|
"Unknown", // 6.Postscript name |
|
"Unknown", // 7.Trademark |
|
"Unknown", // 8.Manufacturer |
|
"Unknown" // 9.Designer |
|
]; |
|
|
|
// Mac want 1-byte per character strings while Windows want |
|
// 2-bytes per character, so duplicate the names table |
|
var stringsUnicode = []; |
|
for (var i = 0; i < strings.length; i++) { |
|
var str = strings[i]; |
|
|
|
var strUnicode = ""; |
|
for (var j = 0; j < str.length; j++) |
|
strUnicode += string16(str.charCodeAt(j)); |
|
stringsUnicode.push(strUnicode); |
|
} |
|
|
|
var names = [strings, stringsUnicode]; |
|
var platforms = ["\x00\x01", "\x00\x03"]; |
|
var encodings = ["\x00\x00", "\x00\x01"]; |
|
var languages = ["\x00\x00", "\x04\x09"]; |
|
|
|
var namesRecordCount = strings.length * platforms.length; |
|
var nameTable = |
|
"\x00\x00" + // format |
|
string16(namesRecordCount) + // Number of names Record |
|
string16(namesRecordCount * 12 + 6); // Storage |
|
|
|
// Build the name records field |
|
var strOffset = 0; |
|
for (var i = 0; i < platforms.length; i++) { |
|
var strs = names[i]; |
|
for (var j = 0; j < strs.length; j++) { |
|
var str = strs[j]; |
|
var nameRecord = |
|
platforms[i] + // platform ID |
|
encodings[i] + // encoding ID |
|
languages[i] + // language ID |
|
string16(i) + // name ID |
|
string16(str.length) + |
|
string16(strOffset); |
|
nameTable += nameRecord; |
|
strOffset += str.length; |
|
} |
|
} |
|
|
|
nameTable += strings.join("") + stringsUnicode.join(""); |
|
return nameTable; |
|
} |
|
|
|
function isFixedPitch(glyphs) { |
|
for (var i = 0; i < glyphs.length - 1; i++) { |
|
if (glyphs[i] != glyphs[i+1]) |
|
return false; |
|
} |
|
return true; |
|
}; |
|
|
|
// The offsets object holds at the same time a representation of where |
|
// to write the table entry information about a table and another offset |
|
// representing the offset where to draw the actual data of a particular |
|
// table |
|
var kRequiredTablesCount = 9; |
|
var offsets = { |
|
currentOffset: 0, |
|
virtualOffset: 9 * (4 * 4) |
|
}; |
|
|
|
var otf = new Uint8Array(kMaxFontFileSize); |
|
createOpenTypeHeader("\x4F\x54\x54\x4F", otf, offsets, 9); |
|
|
|
var charstrings = font.charstrings; |
|
properties.fixedPitch = isFixedPitch(charstrings); |
|
var fields = { |
|
// PostScript Font Program |
|
"CFF ": font.data, |
|
|
|
// OS/2 and Windows Specific metrics |
|
"OS/2": stringToArray(createOS2Table(properties)), |
|
|
|
// Character to glyphs mapping |
|
"cmap": createCMapTable(charstrings.slice()), |
|
|
|
// Font header |
|
"head": (function() { |
|
return stringToArray( |
|
"\x00\x01\x00\x00" + // Version number |
|
"\x00\x00\x10\x00" + // fontRevision |
|
"\x00\x00\x00\x00" + // checksumAdjustement |
|
"\x5F\x0F\x3C\xF5" + // magicNumber |
|
"\x00\x00" + // Flags |
|
"\x03\xE8" + // unitsPerEM (defaulting to 1000) |
|
"\x00\x00\x00\x00\x9e\x0b\x7e\x27" + // creation date |
|
"\x00\x00\x00\x00\x9e\x0b\x7e\x27" + // modifification date |
|
"\x00\x00" + // xMin |
|
string16(properties.descent) + // yMin |
|
"\x0F\xFF" + // xMax |
|
string16(properties.ascent) + // yMax |
|
string16(properties.italicAngle ? 2 : 0) + // macStyle |
|
"\x00\x11" + // lowestRecPPEM |
|
"\x00\x00" + // fontDirectionHint |
|
"\x00\x00" + // indexToLocFormat |
|
"\x00\x00"); // glyphDataFormat |
|
})(), |
|
|
|
// Horizontal header |
|
"hhea": (function() { |
|
return stringToArray( |
|
"\x00\x01\x00\x00" + // Version number |
|
string16(properties.ascent) + // Typographic Ascent |
|
string16(properties.descent) + // Typographic Descent |
|
"\x00\x00" + // Line Gap |
|
"\xFF\xFF" + // advanceWidthMax |
|
"\x00\x00" + // minLeftSidebearing |
|
"\x00\x00" + // minRightSidebearing |
|
"\x00\x00" + // xMaxExtent |
|
string16(properties.capHeight) + // caretSlopeRise |
|
string16(Math.tan(properties.italicAngle) * properties.xHeight) + // caretSlopeRun |
|
"\x00\x00" + // caretOffset |
|
"\x00\x00" + // -reserved- |
|
"\x00\x00" + // -reserved- |
|
"\x00\x00" + // -reserved- |
|
"\x00\x00" + // -reserved- |
|
"\x00\x00" + // metricDataFormat |
|
string16(charstrings.length + 1)); // Number of HMetrics |
|
})(), |
|
|
|
// Horizontal metrics |
|
"hmtx": (function() { |
|
var hmtx = "\x00\x00\x00\x00"; // Fake .notdef |
|
for (var i = 0; i < charstrings.length; i++) { |
|
hmtx += string16(charstrings[i].width) + string16(0); |
|
} |
|
return stringToArray(hmtx); |
|
})(), |
|
|
|
// Maximum profile |
|
"maxp": (function() { |
|
return stringToArray( |
|
"\x00\x00\x50\x00" + // Version number |
|
string16(charstrings.length + 1)); // Num of glyphs |
|
})(), |
|
|
|
// Naming tables |
|
"name": stringToArray(createNameTable(fontName)), |
|
|
|
// PostScript informations |
|
"post": stringToArray(createPostTable(properties)) |
|
}; |
|
|
|
for (var field in fields) |
|
createTableEntry(otf, offsets, field, fields[field]); |
|
|
|
for (var field in fields) { |
|
var table = fields[field]; |
|
otf.set(table, offsets.currentOffset); |
|
offsets.currentOffset += table.length; |
|
} |
|
|
|
var fontData = []; |
|
for (var i = 0; i < offsets.currentOffset; i++) |
|
fontData.push(otf[i]); |
|
return fontData; |
|
}, |
|
|
|
bindWorker: function font_bindWorker(data) { |
|
postMessage({ |
|
action: "font", |
|
data: { |
|
raw: data, |
|
fontName: this.name, |
|
mimetype: this.mimetype |
|
} |
|
}); |
|
}, |
|
|
|
bindDOM: function font_bindDom(data) { |
|
var fontName = this.name; |
|
|
|
// Add the @font-face rule to the document |
|
var url = "url(data:" + this.mimetype + ";base64," + window.btoa(data) + ");"; |
|
var rule = "@font-face { font-family:'" + fontName + "';src:" + url + "}"; |
|
var styleSheet = document.styleSheets[0]; |
|
styleSheet.insertRule(rule, styleSheet.cssRules.length); |
|
|
|
return rule; |
|
} |
|
}; |
|
|
|
return constructor; |
|
})(); |
|
|
|
/** |
|
* Type1Parser encapsulate the needed code for parsing a Type1 font |
|
* program. |
|
* Some of its logic depends on the Type2 charstrings structure. |
|
*/ |
|
var Type1Parser = function() { |
|
/* |
|
* Decrypt a Sequence of Ciphertext Bytes to Produce the Original Sequence |
|
* of Plaintext Bytes. The function took a key as a parameter which can be |
|
* for decrypting the eexec block of for decoding charStrings. |
|
*/ |
|
var kEexecEncryptionKey = 55665; |
|
var kCharStringsEncryptionKey = 4330; |
|
|
|
function decrypt(stream, key, discardNumber) { |
|
var r = key, c1 = 52845, c2 = 22719; |
|
var decryptedString = []; |
|
|
|
var value = ""; |
|
var count = stream.length; |
|
for (var i = 0; i < count; i++) { |
|
value = stream[i]; |
|
decryptedString[i] = value ^ (r >> 8); |
|
r = ((value + r) * c1 + c2) & ((1 << 16) - 1); |
|
} |
|
return decryptedString.slice(discardNumber); |
|
}; |
|
|
|
/* |
|
* CharStrings are encoded following the the CharString Encoding sequence |
|
* describe in Chapter 6 of the "Adobe Type1 Font Format" specification. |
|
* The value in a byte indicates a command, a number, or subsequent bytes |
|
* that are to be interpreted in a special way. |
|
* |
|
* CharString Number Encoding: |
|
* A CharString byte containing the values from 32 through 255 inclusive |
|
* indicate an integer. These values are decoded in four ranges. |
|
* |
|
* 1. A CharString byte containing a value, v, between 32 and 246 inclusive, |
|
* indicate the integer v - 139. Thus, the integer values from -107 through |
|
* 107 inclusive may be encoded in single byte. |
|
* |
|
* 2. A CharString byte containing a value, v, between 247 and 250 inclusive, |
|
* indicates an integer involving the next byte, w, according to the formula: |
|
* [(v - 247) x 256] + w + 108 |
|
* |
|
* 3. A CharString byte containing a value, v, between 251 and 254 inclusive, |
|
* indicates an integer involving the next byte, w, according to the formula: |
|
* -[(v - 251) * 256] - w - 108 |
|
* |
|
* 4. A CharString containing the value 255 indicates that the next 4 bytes |
|
* are a two complement signed integer. The first of these bytes contains the |
|
* highest order bits, the second byte contains the next higher order bits |
|
* and the fourth byte contain the lowest order bits. |
|
* |
|
* |
|
* CharString Command Encoding: |
|
* CharStrings commands are encoded in 1 or 2 bytes. |
|
* |
|
* Single byte commands are encoded in 1 byte that contains a value between |
|
* 0 and 31 inclusive. |
|
* If a command byte contains the value 12, then the value in the next byte |
|
* indicates a command. This "escape" mechanism allows many extra commands |
|
* to be encoded and this encoding technique helps to minimize the length of |
|
* the charStrings. |
|
*/ |
|
var charStringDictionary = { |
|
"1": "hstem", |
|
"3": "vstem", |
|
"4": "vmoveto", |
|
"5": "rlineto", |
|
"6": "hlineto", |
|
"7": "vlineto", |
|
"8": "rrcurveto", |
|
|
|
// closepath is a Type1 command that do not take argument and is useless |
|
// in Type2 and it can simply be ignored. |
|
"9": null, // closepath |
|
|
|
"10": "callsubr", |
|
|
|
// return is normally used inside sub-routines to tells to the execution |
|
// flow that it can be back to normal. |
|
// During the translation process Type1 charstrings will be flattened and |
|
// sub-routines will be embedded directly into the charstring directly, so |
|
// this can be ignored safely. |
|
"11": "return", |
|
|
|
"12": { |
|
// dotsection is a Type1 command to specify some hinting feature for dots |
|
// that do not take a parameter and it can safely be ignored for Type2. |
|
"0": null, // dotsection |
|
|
|
// [vh]stem3 are Type1 only and Type2 supports [vh]stem with multiple |
|
// parameters, so instead of returning [vh]stem3 take a shortcut and |
|
// return [vhstem] instead. |
|
"1": "vstem", |
|
"2": "hstem", |
|
|
|
// Type1 only command with command not (yet) built-in ,throw an error |
|
"6": -1, // seac |
|
"7": -1, //sbw |
|
|
|
"11": "sub", |
|
"12": "div", |
|
|
|
// callothersubr is a mechanism to make calls on the postscript |
|
// interpreter, this is not supported by Type2 charstring but hopefully |
|
// most of the default commands can be ignored safely. |
|
"16": "callothersubr", |
|
|
|
"17": "pop", |
|
|
|
// setcurrentpoint sets the current point to x, y without performing a |
|
// moveto (this is a one shot positionning command). This is used only |
|
// with the return of an OtherSubrs call. |
|
// TODO Implement the OtherSubrs charstring embedding and replace this |
|
// call by a no-op, like 2 'pop' commands for example. |
|
"33": null, //setcurrentpoint |
|
}, |
|
"13": "hsbw", |
|
"14": "endchar", |
|
"21": "rmoveto", |
|
"22": "hmoveto", |
|
"30": "vhcurveto", |
|
"31": "hvcurveto" |
|
}; |
|
|
|
var kEscapeCommand = 12; |
|
|
|
function decodeCharString(array) { |
|
var charstring = []; |
|
var lsb = 0; |
|
var width = 0; |
|
var used = false; |
|
|
|
var value = ""; |
|
var count = array.length; |
|
for (var i = 0; i < count; i++) { |
|
value = parseInt(array[i]); |
|
|
|
if (value < 32) { |
|
var command = null; |
|
if (value == kEscapeCommand) { |
|
var escape = array[++i]; |
|
|
|
// TODO Clean this code |
|
if (escape == 16) { |
|
var index = charstring.pop(); |
|
var argc = charstring.pop(); |
|
var data = charstring.pop(); |
|
|
|
// If the flex mechanishm is not used in a font program, Adobe |
|
// state that that entries 0, 1 and 2 can simply be replace by |
|
// {}, which means that we can simply ignore them. |
|
if (index < 3) { |
|
continue; |
|
} |
|
|
|
// This is the same things about hint replacement, if it is not used |
|
// entry 3 can be replaced by {3} |
|
if (index == 3) { |
|
charstring.push(3); |
|
i++; |
|
continue; |
|
} |
|
} |
|
|
|
command = charStringDictionary["12"][escape]; |
|
} else { |
|
// TODO Clean this code |
|
if (value == 13) { |
|
if (charstring.length == 2) { |
|
width = charstring[1]; |
|
} else if (charstring.length == 4 && charstring[3] == "div") { |
|
width = charstring[1] / charstring[2]; |
|
} else { |
|
error("Unsupported hsbw format: " + charstring); |
|
} |
|
|
|
lsb = charstring[0]; |
|
charstring.push(lsb, "hmoveto"); |
|
charstring.splice(0, 1); |
|
continue; |
|
} |
|
command = charStringDictionary[value]; |
|
} |
|
|
|
// Some charstring commands are meaningless in Type2 and will return |
|
// a null, let's just ignored them |
|
if (!command && i < count) { |
|
continue; |
|
} else if (!command) { |
|
break; |
|
} else if (command == -1) { |
|
error("Support for Type1 command " + value + " (" + escape + ") is not implemented in charstring: " + charString); |
|
} |
|
|
|
value = command; |
|
} else if (value <= 246) { |
|
value = parseInt(value) - 139; |
|
} else if (value <= 250) { |
|
value = ((value - 247) * 256) + parseInt(array[++i]) + 108; |
|
} else if (value <= 254) { |
|
value = -((value - 251) * 256) - parseInt(array[++i]) - 108; |
|
} else { |
|
value = (array[++i] & 0xff) << 24 | (array[++i] & 0xff) << 16 | |
|
(array[++i] & 0xff) << 8 | (array[++i] & 0xff) << 0; |
|
} |
|
|
|
charstring.push(value); |
|
} |
|
|
|
return { charstring: charstring, width: width, lsb: lsb }; |
|
}; |
|
|
|
/** |
|
* Returns an object containing a Subrs array and a CharStrings array |
|
* extracted from and eexec encrypted block of data |
|
*/ |
|
function readNumberArray(str, index) { |
|
var start = ++index; |
|
var count = 0; |
|
while (str[index++] != "]") |
|
count++; |
|
|
|
var array = str.substr(start, count).split(" "); |
|
for (var i = 0; i < array.length; i++) |
|
array[i] = parseFloat(array[i] || 0); |
|
return array; |
|
}; |
|
|
|
this.extractFontProgram = function t1_extractFontProgram(stream) { |
|
var eexec = decrypt(stream, kEexecEncryptionKey, 4); |
|
var eexecString = ""; |
|
for (var i = 0; i < eexec.length; i++) |
|
eexecString += String.fromCharCode(eexec[i]); |
|
|
|
var glyphsSection = false, subrsSection = false; |
|
var extracted = { |
|
subrs: [], |
|
charstrings: [], |
|
properties: { |
|
stemSnapH: [0, 0], |
|
stemSnapV: [0, 0] |
|
} |
|
}; |
|
|
|
var glyph = ""; |
|
var token = ""; |
|
var length = 0; |
|
|
|
var c = ""; |
|
var count = eexecString.length; |
|
for (var i = 0; i < count; i++) { |
|
var c = eexecString[i]; |
|
|
|
if ((glyphsSection || subrsSection) && c == "R") { |
|
var data = eexec.slice(i + 3, i + 3 + length); |
|
var encoded = decrypt(data, kCharStringsEncryptionKey, 4); |
|
var str = decodeCharString(encoded); |
|
|
|
if (glyphsSection) { |
|
extracted.charstrings.push({ |
|
glyph: glyph, |
|
data: str.charstring, |
|
lsb: str.lsb, |
|
width: str.width |
|
}); |
|
} else { |
|
extracted.subrs.push(str.charstring); |
|
} |
|
i += length + 3; |
|
} else if (c == " " || c == "\n") { |
|
length = parseInt(token); |
|
token = ""; |
|
} else { |
|
token += c; |
|
if (!glyphsSection) { |
|
switch (token) { |
|
case "/CharString": |
|
glyphsSection = true; |
|
break; |
|
case "/Subrs": |
|
subrsSection = true; |
|
break; |
|
case "/StdHW": |
|
extracted.properties.stdHW = readNumberArray(eexecString, i + 2)[0]; |
|
break; |
|
case "/StdVW": |
|
extracted.properties.stdVW = readNumberArray(eexecString, i + 2)[0]; |
|
break; |
|
case "/StemSnapH": |
|
extracted.properties.stemSnapH = readNumberArray(eexecString, i + 2); |
|
break; |
|
case "/StemSnapV": |
|
extracted.properties.stemSnapV = readNumberArray(eexecString, i + 2); |
|
break; |
|
} |
|
} else if (c == "/") { |
|
token = glyph = ""; |
|
while ((c = eexecString[++i]) != " ") |
|
glyph += c; |
|
} |
|
} |
|
} |
|
|
|
return extracted; |
|
}, |
|
|
|
this.extractFontHeader = function t1_extractFontProgram(stream) { |
|
var headerString = ""; |
|
for (var i = 0; i < stream.length; i++) |
|
headerString += String.fromCharCode(stream[i]); |
|
|
|
var info = { |
|
textMatrix: null |
|
}; |
|
|
|
var token = ""; |
|
var count = headerString.length; |
|
for (var i = 0; i < count; i++) { |
|
var c = headerString[i]; |
|
if (c == " " || c == "\n") { |
|
switch (token) { |
|
case "/FontMatrix": |
|
var matrix = readNumberArray(headerString, i + 1); |
|
|
|
// The FontMatrix is in unitPerEm, so make it pixels |
|
for (var j = 0; j < matrix.length; j++) |
|
matrix[j] *= 1000; |
|
|
|
// Make the angle into the right direction |
|
matrix[2] *= -1; |
|
|
|
info.textMatrix = matrix; |
|
break; |
|
} |
|
token = ""; |
|
} else { |
|
token += c; |
|
} |
|
} |
|
|
|
return info; |
|
}; |
|
}; |
|
|
|
/** |
|
* The CFF class takes a Type1 file and wrap it into a 'Compact Font Format', |
|
* which itself embed Type2 charstrings. |
|
*/ |
|
var CFFStrings = [ |
|
".notdef","space","exclam","quotedbl","numbersign","dollar","percent","ampersand", |
|
"quoteright","parenleft","parenright","asterisk","plus","comma","hyphen","period", |
|
"slash","zero","one","two","three","four","five","six","seven","eight","nine", |
|
"colon","semicolon","less","equal","greater","question","at","A","B","C","D","E", |
|
"F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y", |
|
"Z","bracketleft","backslash","bracketright","asciicircum","underscore", |
|
"quoteleft","a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q", |
|
"r","s","t","u","v","w","x","y","z","braceleft","bar","braceright","asciitilde", |
|
"exclamdown","cent","sterling","fraction","yen","florin","section","currency", |
|
"quotesingle","quotedblleft","guillemotleft","guilsinglleft","guilsinglright", |
|
"fi","fl","endash","dagger","daggerdbl","periodcentered","paragraph","bullet", |
|
"quotesinglbase","quotedblbase","quotedblright","guillemotright","ellipsis", |
|
"perthousand","questiondown","grave","acute","circumflex","tilde","macron", |
|
"breve","dotaccent","dieresis","ring","cedilla","hungarumlaut","ogonek","caron", |
|
"emdash","AE","ordfeminine","Lslash","Oslash","OE","ordmasculine","ae","dotlessi", |
|
"lslash","oslash","oe","germandbls","onesuperior","logicalnot","mu","trademark", |
|
"Eth","onehalf","plusminus","Thorn","onequarter","divide","brokenbar","degree", |
|
"thorn","threequarters","twosuperior","registered","minus","eth","multiply", |
|
"threesuperior","copyright","Aacute","Acircumflex","Adieresis","Agrave","Aring", |
|
"Atilde","Ccedilla","Eacute","Ecircumflex","Edieresis","Egrave","Iacute", |
|
"Icircumflex","Idieresis","Igrave","Ntilde","Oacute","Ocircumflex","Odieresis", |
|
"Ograve","Otilde","Scaron","Uacute","Ucircumflex","Udieresis","Ugrave","Yacute", |
|
"Ydieresis","Zcaron","aacute","acircumflex","adieresis","agrave","aring","atilde", |
|
"ccedilla","eacute","ecircumflex","edieresis","egrave","iacute","icircumflex", |
|
"idieresis","igrave","ntilde","oacute","ocircumflex","odieresis","ograve", |
|
"otilde","scaron","uacute","ucircumflex","udieresis","ugrave","yacute", |
|
"ydieresis","zcaron","exclamsmall","Hungarumlautsmall","dollaroldstyle", |
|
"dollarsuperior","ampersandsmall","Acutesmall","parenleftsuperior", |
|
"parenrightsuperior","266 ff","onedotenleader","zerooldstyle","oneoldstyle", |
|
"twooldstyle","threeoldstyle","fouroldstyle","fiveoldstyle","sixoldstyle", |
|
"sevenoldstyle","eightoldstyle","nineoldstyle","commasuperior", |
|
"threequartersemdash","periodsuperior","questionsmall","asuperior","bsuperior", |
|
"centsuperior","dsuperior","esuperior","isuperior","lsuperior","msuperior", |
|
"nsuperior","osuperior","rsuperior","ssuperior","tsuperior","ff","ffi","ffl", |
|
"parenleftinferior","parenrightinferior","Circumflexsmall","hyphensuperior", |
|
"Gravesmall","Asmall","Bsmall","Csmall","Dsmall","Esmall","Fsmall","Gsmall", |
|
"Hsmall","Ismall","Jsmall","Ksmall","Lsmall","Msmall","Nsmall","Osmall","Psmall", |
|
"Qsmall","Rsmall","Ssmall","Tsmall","Usmall","Vsmall","Wsmall","Xsmall","Ysmall", |
|
"Zsmall","colonmonetary","onefitted","rupiah","Tildesmall","exclamdownsmall", |
|
"centoldstyle","Lslashsmall","Scaronsmall","Zcaronsmall","Dieresissmall", |
|
"Brevesmall","Caronsmall","Dotaccentsmall","Macronsmall","figuredash", |
|
"hypheninferior","Ogoneksmall","Ringsmall","Cedillasmall","questiondownsmall", |
|
"oneeighth","threeeighths","fiveeighths","seveneighths","onethird","twothirds", |
|
"zerosuperior","foursuperior","fivesuperior","sixsuperior","sevensuperior", |
|
"eightsuperior","ninesuperior","zeroinferior","oneinferior","twoinferior", |
|
"threeinferior","fourinferior","fiveinferior","sixinferior","seveninferior", |
|
"eightinferior","nineinferior","centinferior","dollarinferior","periodinferior", |
|
"commainferior","Agravesmall","Aacutesmall","Acircumflexsmall","Atildesmall", |
|
"Adieresissmall","Aringsmall","AEsmall","Ccedillasmall","Egravesmall", |
|
"Eacutesmall","Ecircumflexsmall","Edieresissmall","Igravesmall","Iacutesmall", |
|
"Icircumflexsmall","Idieresissmall","Ethsmall","Ntildesmall","Ogravesmall", |
|
"Oacutesmall","Ocircumflexsmall","Otildesmall","Odieresissmall","OEsmall", |
|
"Oslashsmall","Ugravesmall","Uacutesmall","Ucircumflexsmall","Udieresissmall", |
|
"Yacutesmall","Thornsmall","Ydieresissmall","001.000","001.001","001.002", |
|
"001.003","Black","Bold","Book","Light","Medium","Regular","Roman","Semibold" |
|
]; |
|
|
|
var type1Parser = new Type1Parser(); |
|
|
|
var CFF = function(name, file, properties) { |
|
// Get the data block containing glyphs and subrs informations |
|
var length1 = file.dict.get("Length1"); |
|
var length2 = file.dict.get("Length2"); |
|
|
|
var headerBlock = file.getBytes(length1); |
|
var header = type1Parser.extractFontHeader(headerBlock); |
|
for (var info in header) |
|
properties[info] = header[info]; |
|
|
|
// Decrypt the data blocks and retrieve it's content |
|
var eexecBlock = file.getBytes(length2); |
|
var data = type1Parser.extractFontProgram(eexecBlock); |
|
for (var info in data.properties) |
|
properties[info] = data.properties[info]; |
|
|
|
var charstrings = this.getOrderedCharStrings(data.charstrings); |
|
var type2Charstrings = this.getType2Charstrings(charstrings); |
|
var subrs = this.getType2Subrs(data.subrs); |
|
|
|
this.charstrings = charstrings; |
|
this.data = this.wrap(name, type2Charstrings, this.charstrings, subrs, properties); |
|
}; |
|
|
|
CFF.prototype = { |
|
createCFFIndexHeader: function cff_createCFFIndexHeader(objects, isByte) { |
|
// First 2 bytes contains the number of objects contained into this index |
|
var count = objects.length; |
|
|
|
// If there is no object, just create an array saying that with another |
|
// offset byte. |
|
if (count == 0) |
|
return "\x00\x00\x00"; |
|
|
|
var data = String.fromCharCode(count >> 8, count & 0xff); |
|
|
|
// Next byte contains the offset size use to reference object in the file |
|
// Actually we're using 0x04 to be sure to be able to store everything |
|
// without thinking of it while coding. |
|
data += "\x04"; |
|
|
|
// Add another offset after this one because we need a new offset |
|
var relativeOffset = 1; |
|
for (var i = 0; i < count + 1; i++) { |
|
data += String.fromCharCode(relativeOffset >> 24, relativeOffset >> 16, |
|
relativeOffset >> 8, relativeOffset & 0xff); |
|
|
|
if (objects[i]) |
|
relativeOffset += objects[i].length; |
|
} |
|
|
|
for (var i =0; i < count; i++) { |
|
for (var j = 0; j < objects[i].length; j++) |
|
data += isByte ? String.fromCharCode(objects[i][j]) : objects[i][j]; |
|
} |
|
return data; |
|
}, |
|
|
|
encodeNumber: function cff_encodeNumber(value) { |
|
if (value >= -32768 && value <= 32767) { |
|
return "\x1c" + |
|
String.fromCharCode(value >> 8) + |
|
String.fromCharCode(value & 0xFF); |
|
} else if (value >= (-2147483647-1) && value <= 2147483647) { |
|
return "\xff" + |
|
String.fromCharCode(value >> 24) + |
|
String.fromCharCode(value >> 16) + |
|
String.fromCharCode(value >> 8) + |
|
String.fromCharCode(value & 0xFF); |
|
} |
|
error("Value: " + value + " is not allowed"); |
|
return null; |
|
}, |
|
|
|
getOrderedCharStrings: function cff_getOrderedCharStrings(glyphs) { |
|
var charstrings = []; |
|
|
|
for (var i = 0; i < glyphs.length; i++) { |
|
var glyph = glyphs[i]; |
|
var unicode = GlyphsUnicode[glyph.glyph]; |
|
if (!unicode) { |
|
if (glyph.glyph != ".notdef") |
|
warn(glyph + " does not have an entry in the glyphs unicode dictionary"); |
|
} else { |
|
charstrings.push({ |
|
glyph: glyph, |
|
unicode: unicode, |
|
charstring: glyph.data, |
|
width: glyph.width, |
|
lsb: glyph.lsb |
|
}); |
|
} |
|
}; |
|
|
|
charstrings.sort(function charstrings_sort(a, b) { |
|
return a.unicode - b.unicode; |
|
}); |
|
return charstrings; |
|
}, |
|
|
|
getType2Charstrings: function cff_getType2Charstrings(type1Charstrings) { |
|
var type2Charstrings = []; |
|
var count = type1Charstrings.length; |
|
for (var i = 0; i < count; i++) { |
|
var charstring = type1Charstrings[i].charstring; |
|
type2Charstrings.push(this.flattenCharstring(charstring.slice(), this.commandsMap)); |
|
} |
|
return type2Charstrings; |
|
}, |
|
|
|
getType2Subrs: function cff_getType2Charstrings(type1Subrs) { |
|
var bias = 0; |
|
var count = type1Subrs.length; |
|
if (count < 1240) |
|
bias = 107; |
|
else if (count < 33900) |
|
bias = 1131; |
|
else |
|
bias = 32768; |
|
|
|
// Add a bunch of empty subrs to deal with the Type2 bias |
|
var type2Subrs = []; |
|
for (var i = 0; i < bias; i++) |
|
type2Subrs.push([0x0B]); |
|
|
|
for (var i = 0; i < count; i++) |
|
type2Subrs.push(this.flattenCharstring(type1Subrs[i], this.commandsMap)); |
|
|
|
return type2Subrs; |
|
}, |
|
|
|
/* |
|
* Flatten the commands by interpreting the postscript code and replacing |
|
* every 'callsubr', 'callothersubr' by the real commands. |
|
*/ |
|
commandsMap: { |
|
"hstem": 1, |
|
"vstem": 3, |
|
"vmoveto": 4, |
|
"rlineto": 5, |
|
"hlineto": 6, |
|
"vlineto": 7, |
|
"rrcurveto": 8, |
|
"callsubr": 10, |
|
"return": 11, |
|
"sub": [12, 11], |
|
"div": [12, 12], |
|
"pop": [1, 12, 18], |
|
"endchar": 14, |
|
"rmoveto": 21, |
|
"hmoveto": 22, |
|
"vhcurveto": 30, |
|
"hvcurveto": 31, |
|
}, |
|
|
|
flattenCharstring: function flattenCharstring(charstring, map) { |
|
for (var i = 0; i < charstring.length; i++) { |
|
var command = charstring[i]; |
|
if (command.charAt) { |
|
var cmd = map[command]; |
|
assert(cmd, "Unknow command: " + command); |
|
|
|
if (IsArray(cmd)) { |
|
charstring.splice(i++, 1, cmd[0], cmd[1]); |
|
} else { |
|
charstring[i] = cmd; |
|
} |
|
} else { |
|
charstring.splice(i, 1, 28, command >> 8, command & 0xff); |
|
i+= 2; |
|
} |
|
} |
|
return charstring; |
|
}, |
|
|
|
wrap: function wrap(name, glyphs, charstrings, subrs, properties) { |
|
var fields = { |
|
"header": "\x01\x00\x04\x04", // major version, minor version, header size, offset size |
|
|
|
"names": this.createCFFIndexHeader([name]), |
|
|
|
"topDict": (function topDict(self) { |
|
return function() { |
|
var dict = |
|
"\x00\x01\x01\x01\x30" + |
|
"\xf8\x1b\x00" + // version |
|
"\xf8\x1b\x01" + // Notice |
|
"\xf8\x1b\x02" + // FullName |
|
"\xf8\x1b\x03" + // FamilyName |
|
"\xf8\x1b\x04" + // Weight |
|
"\x1c\x00\x00\x10"; // Encoding |
|
|
|
var boundingBox = properties.bbox; |
|
for (var i = 0; i < boundingBox.length; i++) |
|
dict += self.encodeNumber(boundingBox[i]); |
|
dict += "\x05"; // FontBBox; |
|
|
|
var offset = fields.header.length + |
|
fields.names.length + |
|
(dict.length + (4 + 4 + 7)) + |
|
fields.strings.length + |
|
fields.globalSubrs.length; |
|
dict += self.encodeNumber(offset) + "\x0f"; // Charset |
|
|
|
offset = offset + (glyphs.length * 2) + 1; |
|
dict += self.encodeNumber(offset) + "\x11"; // Charstrings |
|
|
|
dict += self.encodeNumber(fields.private.length); |
|
var offset = offset + fields.charstrings.length; |
|
dict += self.encodeNumber(offset) + "\x12"; // Private |
|
|
|
return dict; |
|
}; |
|
})(this), |
|
|
|
"strings": (function strings(self) { |
|
var strings = [ |
|
"Version 0.11", // Version |
|
"See original notice", // Notice |
|
name, // FullName |
|
name, // FamilyName |
|
"Medium" // Weight |
|
]; |
|
return self.createCFFIndexHeader(strings); |
|
})(this), |
|
|
|
"globalSubrs": this.createCFFIndexHeader([]), |
|
|
|
"charset": (function charset(self) { |
|
var charset = "\x00"; // Encoding |
|
|
|
var count = glyphs.length; |
|
for (var i = 0; i < count; i++) { |
|
var index = CFFStrings.indexOf(charstrings[i].glyph.glyph); |
|
// Some characters like asterikmath && circlecopyrt are missing from the |
|
// original strings, for the moment let's map them to .notdef and see |
|
// later if it cause any problems |
|
if (index == -1) |
|
index = 0; |
|
|
|
charset += String.fromCharCode(index >> 8, index & 0xff); |
|
} |
|
return charset; |
|
})(this), |
|
|
|
"charstrings": this.createCFFIndexHeader([[0x8B, 0x0E]].concat(glyphs), true), |
|
|
|
"private": (function(self) { |
|
var data = |
|
"\x8b\x14" + // defaultWidth |
|
"\x8b\x15" + // nominalWidth |
|
self.encodeNumber(properties.stdHW) + "\x0a" + // StdHW |
|
self.encodeNumber(properties.stdVW) + "\x0b"; // StdVW |
|
|
|
var stemH = properties.stemSnapH; |
|
for (var i = 0; i < stemH.length; i++) |
|
data += self.encodeNumber(stemH[i]); |
|
data += "\x0c\x0c"; // StemSnapH |
|
|
|
var stemV = properties.stemSnapV; |
|
for (var i = 0; i < stemV.length; i++) |
|
data += self.encodeNumber(stemV[i]); |
|
data += "\x0c\x0d"; // StemSnapV |
|
|
|
data += self.encodeNumber(data.length + 4) + "\x13"; // Subrs offset |
|
|
|
return data; |
|
})(this), |
|
|
|
"localSubrs": this.createCFFIndexHeader(subrs, true) |
|
}; |
|
fields.topDict = fields.topDict(); |
|
|
|
|
|
var cff = []; |
|
for (var index in fields) { |
|
var field = fields[index]; |
|
for (var i = 0; i < field.length; i++) |
|
cff.push(field.charCodeAt(i)); |
|
} |
|
|
|
return cff; |
|
} |
|
}; |
|
|
|
|