/**
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* @licstart The following is the entire license notice for the
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* JavaScript code in this page
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*
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* Copyright 2022 Mozilla Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* @licend The above is the entire license notice for the
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* JavaScript code in this page
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*/
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"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.CFFTopDict = exports.CFFStrings = exports.CFFStandardStrings = exports.CFFPrivateDict = exports.CFFParser = exports.CFFIndex = exports.CFFHeader = exports.CFFFDSelect = exports.CFFCompiler = exports.CFFCharset = exports.CFF = void 0;
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var _util = require("../shared/util.js");
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var _charsets = require("./charsets.js");
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var _encodings = require("./encodings.js");
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const MAX_SUBR_NESTING = 10;
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const CFFStandardStrings = [".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", "twodotenleader", "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"];
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exports.CFFStandardStrings = CFFStandardStrings;
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const NUM_STANDARD_CFF_STRINGS = 391;
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const CharstringValidationData = [null, {
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id: "hstem",
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min: 2,
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stackClearing: true,
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stem: true
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}, null, {
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id: "vstem",
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min: 2,
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stackClearing: true,
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stem: true
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}, {
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id: "vmoveto",
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min: 1,
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stackClearing: true
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}, {
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id: "rlineto",
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min: 2,
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resetStack: true
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}, {
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id: "hlineto",
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min: 1,
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resetStack: true
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}, {
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id: "vlineto",
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min: 1,
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resetStack: true
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}, {
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id: "rrcurveto",
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min: 6,
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resetStack: true
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}, null, {
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id: "callsubr",
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min: 1,
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undefStack: true
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}, {
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id: "return",
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min: 0,
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undefStack: true
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}, null, null, {
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id: "endchar",
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min: 0,
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stackClearing: true
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}, null, null, null, {
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id: "hstemhm",
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min: 2,
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stackClearing: true,
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stem: true
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}, {
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id: "hintmask",
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min: 0,
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stackClearing: true
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}, {
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id: "cntrmask",
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min: 0,
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stackClearing: true
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}, {
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id: "rmoveto",
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min: 2,
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stackClearing: true
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}, {
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id: "hmoveto",
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min: 1,
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stackClearing: true
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}, {
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id: "vstemhm",
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min: 2,
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stackClearing: true,
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stem: true
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}, {
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id: "rcurveline",
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min: 8,
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resetStack: true
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}, {
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id: "rlinecurve",
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min: 8,
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resetStack: true
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}, {
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id: "vvcurveto",
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min: 4,
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resetStack: true
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}, {
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id: "hhcurveto",
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min: 4,
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resetStack: true
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}, null, {
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id: "callgsubr",
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min: 1,
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undefStack: true
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}, {
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id: "vhcurveto",
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min: 4,
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resetStack: true
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}, {
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id: "hvcurveto",
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min: 4,
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resetStack: true
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}];
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const CharstringValidationData12 = [null, null, null, {
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id: "and",
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min: 2,
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stackDelta: -1
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}, {
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id: "or",
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min: 2,
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stackDelta: -1
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}, {
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id: "not",
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min: 1,
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stackDelta: 0
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}, null, null, null, {
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id: "abs",
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min: 1,
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stackDelta: 0
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}, {
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id: "add",
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min: 2,
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stackDelta: -1,
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stackFn(stack, index) {
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stack[index - 2] = stack[index - 2] + stack[index - 1];
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}
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}, {
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id: "sub",
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min: 2,
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stackDelta: -1,
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stackFn(stack, index) {
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stack[index - 2] = stack[index - 2] - stack[index - 1];
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}
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}, {
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id: "div",
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min: 2,
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stackDelta: -1,
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stackFn(stack, index) {
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stack[index - 2] = stack[index - 2] / stack[index - 1];
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}
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}, null, {
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id: "neg",
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min: 1,
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stackDelta: 0,
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stackFn(stack, index) {
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stack[index - 1] = -stack[index - 1];
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}
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}, {
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id: "eq",
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min: 2,
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stackDelta: -1
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}, null, null, {
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id: "drop",
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min: 1,
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stackDelta: -1
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}, null, {
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id: "put",
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min: 2,
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stackDelta: -2
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}, {
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id: "get",
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min: 1,
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stackDelta: 0
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}, {
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id: "ifelse",
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min: 4,
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stackDelta: -3
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}, {
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id: "random",
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min: 0,
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stackDelta: 1
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}, {
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id: "mul",
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min: 2,
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stackDelta: -1,
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stackFn(stack, index) {
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stack[index - 2] = stack[index - 2] * stack[index - 1];
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}
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}, null, {
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id: "sqrt",
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min: 1,
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stackDelta: 0
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}, {
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id: "dup",
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min: 1,
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stackDelta: 1
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}, {
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id: "exch",
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min: 2,
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stackDelta: 0
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}, {
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id: "index",
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min: 2,
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stackDelta: 0
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}, {
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id: "roll",
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min: 3,
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stackDelta: -2
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}, null, null, null, {
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id: "hflex",
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min: 7,
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resetStack: true
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}, {
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id: "flex",
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min: 13,
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resetStack: true
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}, {
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id: "hflex1",
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min: 9,
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resetStack: true
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}, {
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id: "flex1",
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min: 11,
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resetStack: true
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}];
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class CFFParser {
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constructor(file, properties, seacAnalysisEnabled) {
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this.bytes = file.getBytes();
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this.properties = properties;
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this.seacAnalysisEnabled = !!seacAnalysisEnabled;
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}
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parse() {
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const properties = this.properties;
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const cff = new CFF();
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this.cff = cff;
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const header = this.parseHeader();
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const nameIndex = this.parseIndex(header.endPos);
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const topDictIndex = this.parseIndex(nameIndex.endPos);
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const stringIndex = this.parseIndex(topDictIndex.endPos);
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const globalSubrIndex = this.parseIndex(stringIndex.endPos);
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const topDictParsed = this.parseDict(topDictIndex.obj.get(0));
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const topDict = this.createDict(CFFTopDict, topDictParsed, cff.strings);
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cff.header = header.obj;
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cff.names = this.parseNameIndex(nameIndex.obj);
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cff.strings = this.parseStringIndex(stringIndex.obj);
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cff.topDict = topDict;
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cff.globalSubrIndex = globalSubrIndex.obj;
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this.parsePrivateDict(cff.topDict);
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cff.isCIDFont = topDict.hasName("ROS");
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const charStringOffset = topDict.getByName("CharStrings");
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const charStringIndex = this.parseIndex(charStringOffset).obj;
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const fontMatrix = topDict.getByName("FontMatrix");
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if (fontMatrix) {
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properties.fontMatrix = fontMatrix;
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}
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const fontBBox = topDict.getByName("FontBBox");
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if (fontBBox) {
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properties.ascent = Math.max(fontBBox[3], fontBBox[1]);
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properties.descent = Math.min(fontBBox[1], fontBBox[3]);
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properties.ascentScaled = true;
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}
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let charset, encoding;
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if (cff.isCIDFont) {
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const fdArrayIndex = this.parseIndex(topDict.getByName("FDArray")).obj;
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for (let i = 0, ii = fdArrayIndex.count; i < ii; ++i) {
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const dictRaw = fdArrayIndex.get(i);
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const fontDict = this.createDict(CFFTopDict, this.parseDict(dictRaw), cff.strings);
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this.parsePrivateDict(fontDict);
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cff.fdArray.push(fontDict);
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}
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encoding = null;
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charset = this.parseCharsets(topDict.getByName("charset"), charStringIndex.count, cff.strings, true);
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cff.fdSelect = this.parseFDSelect(topDict.getByName("FDSelect"), charStringIndex.count);
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} else {
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charset = this.parseCharsets(topDict.getByName("charset"), charStringIndex.count, cff.strings, false);
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encoding = this.parseEncoding(topDict.getByName("Encoding"), properties, cff.strings, charset.charset);
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}
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cff.charset = charset;
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cff.encoding = encoding;
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const charStringsAndSeacs = this.parseCharStrings({
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charStrings: charStringIndex,
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localSubrIndex: topDict.privateDict.subrsIndex,
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globalSubrIndex: globalSubrIndex.obj,
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fdSelect: cff.fdSelect,
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fdArray: cff.fdArray,
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privateDict: topDict.privateDict
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});
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cff.charStrings = charStringsAndSeacs.charStrings;
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cff.seacs = charStringsAndSeacs.seacs;
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cff.widths = charStringsAndSeacs.widths;
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return cff;
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}
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parseHeader() {
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let bytes = this.bytes;
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const bytesLength = bytes.length;
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let offset = 0;
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while (offset < bytesLength && bytes[offset] !== 1) {
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++offset;
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}
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if (offset >= bytesLength) {
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throw new _util.FormatError("Invalid CFF header");
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}
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if (offset !== 0) {
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(0, _util.info)("cff data is shifted");
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bytes = bytes.subarray(offset);
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this.bytes = bytes;
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}
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const major = bytes[0];
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const minor = bytes[1];
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const hdrSize = bytes[2];
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const offSize = bytes[3];
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const header = new CFFHeader(major, minor, hdrSize, offSize);
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return {
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obj: header,
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endPos: hdrSize
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};
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}
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parseDict(dict) {
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let pos = 0;
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function parseOperand() {
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let value = dict[pos++];
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if (value === 30) {
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return parseFloatOperand();
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} else if (value === 28) {
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value = dict[pos++];
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value = (value << 24 | dict[pos++] << 16) >> 16;
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return value;
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} else if (value === 29) {
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value = dict[pos++];
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value = value << 8 | dict[pos++];
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value = value << 8 | dict[pos++];
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value = value << 8 | dict[pos++];
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return value;
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} else if (value >= 32 && value <= 246) {
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return value - 139;
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} else if (value >= 247 && value <= 250) {
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return (value - 247) * 256 + dict[pos++] + 108;
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} else if (value >= 251 && value <= 254) {
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return -((value - 251) * 256) - dict[pos++] - 108;
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}
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(0, _util.warn)('CFFParser_parseDict: "' + value + '" is a reserved command.');
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return NaN;
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}
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function parseFloatOperand() {
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let str = "";
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const eof = 15;
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const lookup = ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9", ".", "E", "E-", null, "-"];
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const length = dict.length;
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while (pos < length) {
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const b = dict[pos++];
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const b1 = b >> 4;
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const b2 = b & 15;
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if (b1 === eof) {
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break;
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}
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str += lookup[b1];
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if (b2 === eof) {
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break;
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}
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str += lookup[b2];
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}
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return parseFloat(str);
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}
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let operands = [];
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const entries = [];
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pos = 0;
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const end = dict.length;
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while (pos < end) {
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let b = dict[pos];
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if (b <= 21) {
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if (b === 12) {
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b = b << 8 | dict[++pos];
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}
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entries.push([b, operands]);
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operands = [];
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++pos;
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} else {
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operands.push(parseOperand());
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}
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}
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return entries;
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}
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parseIndex(pos) {
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const cffIndex = new CFFIndex();
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const bytes = this.bytes;
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const count = bytes[pos++] << 8 | bytes[pos++];
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const offsets = [];
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let end = pos;
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let i, ii;
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if (count !== 0) {
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const offsetSize = bytes[pos++];
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const startPos = pos + (count + 1) * offsetSize - 1;
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for (i = 0, ii = count + 1; i < ii; ++i) {
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let offset = 0;
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for (let j = 0; j < offsetSize; ++j) {
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offset <<= 8;
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offset += bytes[pos++];
|
}
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offsets.push(startPos + offset);
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}
|
|
end = offsets[count];
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}
|
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for (i = 0, ii = offsets.length - 1; i < ii; ++i) {
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const offsetStart = offsets[i];
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const offsetEnd = offsets[i + 1];
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cffIndex.add(bytes.subarray(offsetStart, offsetEnd));
|
}
|
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return {
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obj: cffIndex,
|
endPos: end
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};
|
}
|
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parseNameIndex(index) {
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const names = [];
|
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for (let i = 0, ii = index.count; i < ii; ++i) {
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const name = index.get(i);
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names.push((0, _util.bytesToString)(name));
|
}
|
|
return names;
|
}
|
|
parseStringIndex(index) {
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const strings = new CFFStrings();
|
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for (let i = 0, ii = index.count; i < ii; ++i) {
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const data = index.get(i);
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strings.add((0, _util.bytesToString)(data));
|
}
|
|
return strings;
|
}
|
|
createDict(Type, dict, strings) {
|
const cffDict = new Type(strings);
|
|
for (let i = 0, ii = dict.length; i < ii; ++i) {
|
const pair = dict[i];
|
const key = pair[0];
|
const value = pair[1];
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cffDict.setByKey(key, value);
|
}
|
|
return cffDict;
|
}
|
|
parseCharString(state, data, localSubrIndex, globalSubrIndex) {
|
if (!data || state.callDepth > MAX_SUBR_NESTING) {
|
return false;
|
}
|
|
let stackSize = state.stackSize;
|
const stack = state.stack;
|
const length = data.length;
|
|
for (let j = 0; j < length;) {
|
const value = data[j++];
|
let validationCommand = null;
|
|
if (value === 12) {
|
const q = data[j++];
|
|
if (q === 0) {
|
data[j - 2] = 139;
|
data[j - 1] = 22;
|
stackSize = 0;
|
} else {
|
validationCommand = CharstringValidationData12[q];
|
}
|
} else if (value === 28) {
|
stack[stackSize] = (data[j] << 24 | data[j + 1] << 16) >> 16;
|
j += 2;
|
stackSize++;
|
} else if (value === 14) {
|
if (stackSize >= 4) {
|
stackSize -= 4;
|
|
if (this.seacAnalysisEnabled) {
|
state.seac = stack.slice(stackSize, stackSize + 4);
|
return false;
|
}
|
}
|
|
validationCommand = CharstringValidationData[value];
|
} else if (value >= 32 && value <= 246) {
|
stack[stackSize] = value - 139;
|
stackSize++;
|
} else if (value >= 247 && value <= 254) {
|
stack[stackSize] = value < 251 ? (value - 247 << 8) + data[j] + 108 : -(value - 251 << 8) - data[j] - 108;
|
j++;
|
stackSize++;
|
} else if (value === 255) {
|
stack[stackSize] = (data[j] << 24 | data[j + 1] << 16 | data[j + 2] << 8 | data[j + 3]) / 65536;
|
j += 4;
|
stackSize++;
|
} else if (value === 19 || value === 20) {
|
state.hints += stackSize >> 1;
|
j += state.hints + 7 >> 3;
|
stackSize %= 2;
|
validationCommand = CharstringValidationData[value];
|
} else if (value === 10 || value === 29) {
|
let subrsIndex;
|
|
if (value === 10) {
|
subrsIndex = localSubrIndex;
|
} else {
|
subrsIndex = globalSubrIndex;
|
}
|
|
if (!subrsIndex) {
|
validationCommand = CharstringValidationData[value];
|
(0, _util.warn)("Missing subrsIndex for " + validationCommand.id);
|
return false;
|
}
|
|
let bias = 32768;
|
|
if (subrsIndex.count < 1240) {
|
bias = 107;
|
} else if (subrsIndex.count < 33900) {
|
bias = 1131;
|
}
|
|
const subrNumber = stack[--stackSize] + bias;
|
|
if (subrNumber < 0 || subrNumber >= subrsIndex.count || isNaN(subrNumber)) {
|
validationCommand = CharstringValidationData[value];
|
(0, _util.warn)("Out of bounds subrIndex for " + validationCommand.id);
|
return false;
|
}
|
|
state.stackSize = stackSize;
|
state.callDepth++;
|
const valid = this.parseCharString(state, subrsIndex.get(subrNumber), localSubrIndex, globalSubrIndex);
|
|
if (!valid) {
|
return false;
|
}
|
|
state.callDepth--;
|
stackSize = state.stackSize;
|
continue;
|
} else if (value === 11) {
|
state.stackSize = stackSize;
|
return true;
|
} else if (value === 0 && j === data.length) {
|
data[j - 1] = 14;
|
validationCommand = CharstringValidationData[14];
|
} else {
|
validationCommand = CharstringValidationData[value];
|
}
|
|
if (validationCommand) {
|
if (validationCommand.stem) {
|
state.hints += stackSize >> 1;
|
|
if (value === 3 || value === 23) {
|
state.hasVStems = true;
|
} else if (state.hasVStems && (value === 1 || value === 18)) {
|
(0, _util.warn)("CFF stem hints are in wrong order");
|
data[j - 1] = value === 1 ? 3 : 23;
|
}
|
}
|
|
if ("min" in validationCommand) {
|
if (!state.undefStack && stackSize < validationCommand.min) {
|
(0, _util.warn)("Not enough parameters for " + validationCommand.id + "; actual: " + stackSize + ", expected: " + validationCommand.min);
|
|
if (stackSize === 0) {
|
data[j - 1] = 14;
|
return true;
|
}
|
|
return false;
|
}
|
}
|
|
if (state.firstStackClearing && validationCommand.stackClearing) {
|
state.firstStackClearing = false;
|
stackSize -= validationCommand.min;
|
|
if (stackSize >= 2 && validationCommand.stem) {
|
stackSize %= 2;
|
} else if (stackSize > 1) {
|
(0, _util.warn)("Found too many parameters for stack-clearing command");
|
}
|
|
if (stackSize > 0) {
|
state.width = stack[stackSize - 1];
|
}
|
}
|
|
if ("stackDelta" in validationCommand) {
|
if ("stackFn" in validationCommand) {
|
validationCommand.stackFn(stack, stackSize);
|
}
|
|
stackSize += validationCommand.stackDelta;
|
} else if (validationCommand.stackClearing) {
|
stackSize = 0;
|
} else if (validationCommand.resetStack) {
|
stackSize = 0;
|
state.undefStack = false;
|
} else if (validationCommand.undefStack) {
|
stackSize = 0;
|
state.undefStack = true;
|
state.firstStackClearing = false;
|
}
|
}
|
}
|
|
state.stackSize = stackSize;
|
return true;
|
}
|
|
parseCharStrings({
|
charStrings,
|
localSubrIndex,
|
globalSubrIndex,
|
fdSelect,
|
fdArray,
|
privateDict
|
}) {
|
const seacs = [];
|
const widths = [];
|
const count = charStrings.count;
|
|
for (let i = 0; i < count; i++) {
|
const charstring = charStrings.get(i);
|
const state = {
|
callDepth: 0,
|
stackSize: 0,
|
stack: [],
|
undefStack: true,
|
hints: 0,
|
firstStackClearing: true,
|
seac: null,
|
width: null,
|
hasVStems: false
|
};
|
let valid = true;
|
let localSubrToUse = null;
|
let privateDictToUse = privateDict;
|
|
if (fdSelect && fdArray.length) {
|
const fdIndex = fdSelect.getFDIndex(i);
|
|
if (fdIndex === -1) {
|
(0, _util.warn)("Glyph index is not in fd select.");
|
valid = false;
|
}
|
|
if (fdIndex >= fdArray.length) {
|
(0, _util.warn)("Invalid fd index for glyph index.");
|
valid = false;
|
}
|
|
if (valid) {
|
privateDictToUse = fdArray[fdIndex].privateDict;
|
localSubrToUse = privateDictToUse.subrsIndex;
|
}
|
} else if (localSubrIndex) {
|
localSubrToUse = localSubrIndex;
|
}
|
|
if (valid) {
|
valid = this.parseCharString(state, charstring, localSubrToUse, globalSubrIndex);
|
}
|
|
if (state.width !== null) {
|
const nominalWidth = privateDictToUse.getByName("nominalWidthX");
|
widths[i] = nominalWidth + state.width;
|
} else {
|
const defaultWidth = privateDictToUse.getByName("defaultWidthX");
|
widths[i] = defaultWidth;
|
}
|
|
if (state.seac !== null) {
|
seacs[i] = state.seac;
|
}
|
|
if (!valid) {
|
charStrings.set(i, new Uint8Array([14]));
|
}
|
}
|
|
return {
|
charStrings,
|
seacs,
|
widths
|
};
|
}
|
|
emptyPrivateDictionary(parentDict) {
|
const privateDict = this.createDict(CFFPrivateDict, [], parentDict.strings);
|
parentDict.setByKey(18, [0, 0]);
|
parentDict.privateDict = privateDict;
|
}
|
|
parsePrivateDict(parentDict) {
|
if (!parentDict.hasName("Private")) {
|
this.emptyPrivateDictionary(parentDict);
|
return;
|
}
|
|
const privateOffset = parentDict.getByName("Private");
|
|
if (!Array.isArray(privateOffset) || privateOffset.length !== 2) {
|
parentDict.removeByName("Private");
|
return;
|
}
|
|
const size = privateOffset[0];
|
const offset = privateOffset[1];
|
|
if (size === 0 || offset >= this.bytes.length) {
|
this.emptyPrivateDictionary(parentDict);
|
return;
|
}
|
|
const privateDictEnd = offset + size;
|
const dictData = this.bytes.subarray(offset, privateDictEnd);
|
const dict = this.parseDict(dictData);
|
const privateDict = this.createDict(CFFPrivateDict, dict, parentDict.strings);
|
parentDict.privateDict = privateDict;
|
|
if (!privateDict.getByName("Subrs")) {
|
return;
|
}
|
|
const subrsOffset = privateDict.getByName("Subrs");
|
const relativeOffset = offset + subrsOffset;
|
|
if (subrsOffset === 0 || relativeOffset >= this.bytes.length) {
|
this.emptyPrivateDictionary(parentDict);
|
return;
|
}
|
|
const subrsIndex = this.parseIndex(relativeOffset);
|
privateDict.subrsIndex = subrsIndex.obj;
|
}
|
|
parseCharsets(pos, length, strings, cid) {
|
if (pos === 0) {
|
return new CFFCharset(true, CFFCharsetPredefinedTypes.ISO_ADOBE, _charsets.ISOAdobeCharset);
|
} else if (pos === 1) {
|
return new CFFCharset(true, CFFCharsetPredefinedTypes.EXPERT, _charsets.ExpertCharset);
|
} else if (pos === 2) {
|
return new CFFCharset(true, CFFCharsetPredefinedTypes.EXPERT_SUBSET, _charsets.ExpertSubsetCharset);
|
}
|
|
const bytes = this.bytes;
|
const start = pos;
|
const format = bytes[pos++];
|
const charset = [cid ? 0 : ".notdef"];
|
let id, count, i;
|
length -= 1;
|
|
switch (format) {
|
case 0:
|
for (i = 0; i < length; i++) {
|
id = bytes[pos++] << 8 | bytes[pos++];
|
charset.push(cid ? id : strings.get(id));
|
}
|
|
break;
|
|
case 1:
|
while (charset.length <= length) {
|
id = bytes[pos++] << 8 | bytes[pos++];
|
count = bytes[pos++];
|
|
for (i = 0; i <= count; i++) {
|
charset.push(cid ? id++ : strings.get(id++));
|
}
|
}
|
|
break;
|
|
case 2:
|
while (charset.length <= length) {
|
id = bytes[pos++] << 8 | bytes[pos++];
|
count = bytes[pos++] << 8 | bytes[pos++];
|
|
for (i = 0; i <= count; i++) {
|
charset.push(cid ? id++ : strings.get(id++));
|
}
|
}
|
|
break;
|
|
default:
|
throw new _util.FormatError("Unknown charset format");
|
}
|
|
const end = pos;
|
const raw = bytes.subarray(start, end);
|
return new CFFCharset(false, format, charset, raw);
|
}
|
|
parseEncoding(pos, properties, strings, charset) {
|
const encoding = Object.create(null);
|
const bytes = this.bytes;
|
let predefined = false;
|
let format, i, ii;
|
let raw = null;
|
|
function readSupplement() {
|
const supplementsCount = bytes[pos++];
|
|
for (i = 0; i < supplementsCount; i++) {
|
const code = bytes[pos++];
|
const sid = (bytes[pos++] << 8) + (bytes[pos++] & 0xff);
|
encoding[code] = charset.indexOf(strings.get(sid));
|
}
|
}
|
|
if (pos === 0 || pos === 1) {
|
predefined = true;
|
format = pos;
|
const baseEncoding = pos ? _encodings.ExpertEncoding : _encodings.StandardEncoding;
|
|
for (i = 0, ii = charset.length; i < ii; i++) {
|
const index = baseEncoding.indexOf(charset[i]);
|
|
if (index !== -1) {
|
encoding[index] = i;
|
}
|
}
|
} else {
|
const dataStart = pos;
|
format = bytes[pos++];
|
|
switch (format & 0x7f) {
|
case 0:
|
const glyphsCount = bytes[pos++];
|
|
for (i = 1; i <= glyphsCount; i++) {
|
encoding[bytes[pos++]] = i;
|
}
|
|
break;
|
|
case 1:
|
const rangesCount = bytes[pos++];
|
let gid = 1;
|
|
for (i = 0; i < rangesCount; i++) {
|
const start = bytes[pos++];
|
const left = bytes[pos++];
|
|
for (let j = start; j <= start + left; j++) {
|
encoding[j] = gid++;
|
}
|
}
|
|
break;
|
|
default:
|
throw new _util.FormatError(`Unknown encoding format: ${format} in CFF`);
|
}
|
|
const dataEnd = pos;
|
|
if (format & 0x80) {
|
bytes[dataStart] &= 0x7f;
|
readSupplement();
|
}
|
|
raw = bytes.subarray(dataStart, dataEnd);
|
}
|
|
format &= 0x7f;
|
return new CFFEncoding(predefined, format, encoding, raw);
|
}
|
|
parseFDSelect(pos, length) {
|
const bytes = this.bytes;
|
const format = bytes[pos++];
|
const fdSelect = [];
|
let i;
|
|
switch (format) {
|
case 0:
|
for (i = 0; i < length; ++i) {
|
const id = bytes[pos++];
|
fdSelect.push(id);
|
}
|
|
break;
|
|
case 3:
|
const rangesCount = bytes[pos++] << 8 | bytes[pos++];
|
|
for (i = 0; i < rangesCount; ++i) {
|
let first = bytes[pos++] << 8 | bytes[pos++];
|
|
if (i === 0 && first !== 0) {
|
(0, _util.warn)("parseFDSelect: The first range must have a first GID of 0" + " -- trying to recover.");
|
first = 0;
|
}
|
|
const fdIndex = bytes[pos++];
|
const next = bytes[pos] << 8 | bytes[pos + 1];
|
|
for (let j = first; j < next; ++j) {
|
fdSelect.push(fdIndex);
|
}
|
}
|
|
pos += 2;
|
break;
|
|
default:
|
throw new _util.FormatError(`parseFDSelect: Unknown format "${format}".`);
|
}
|
|
if (fdSelect.length !== length) {
|
throw new _util.FormatError("parseFDSelect: Invalid font data.");
|
}
|
|
return new CFFFDSelect(format, fdSelect);
|
}
|
|
}
|
|
exports.CFFParser = CFFParser;
|
|
class CFF {
|
constructor() {
|
this.header = null;
|
this.names = [];
|
this.topDict = null;
|
this.strings = new CFFStrings();
|
this.globalSubrIndex = null;
|
this.encoding = null;
|
this.charset = null;
|
this.charStrings = null;
|
this.fdArray = [];
|
this.fdSelect = null;
|
this.isCIDFont = false;
|
}
|
|
duplicateFirstGlyph() {
|
if (this.charStrings.count >= 65535) {
|
(0, _util.warn)("Not enough space in charstrings to duplicate first glyph.");
|
return;
|
}
|
|
const glyphZero = this.charStrings.get(0);
|
this.charStrings.add(glyphZero);
|
|
if (this.isCIDFont) {
|
this.fdSelect.fdSelect.push(this.fdSelect.fdSelect[0]);
|
}
|
}
|
|
hasGlyphId(id) {
|
if (id < 0 || id >= this.charStrings.count) {
|
return false;
|
}
|
|
const glyph = this.charStrings.get(id);
|
return glyph.length > 0;
|
}
|
|
}
|
|
exports.CFF = CFF;
|
|
class CFFHeader {
|
constructor(major, minor, hdrSize, offSize) {
|
this.major = major;
|
this.minor = minor;
|
this.hdrSize = hdrSize;
|
this.offSize = offSize;
|
}
|
|
}
|
|
exports.CFFHeader = CFFHeader;
|
|
class CFFStrings {
|
constructor() {
|
this.strings = [];
|
}
|
|
get(index) {
|
if (index >= 0 && index <= NUM_STANDARD_CFF_STRINGS - 1) {
|
return CFFStandardStrings[index];
|
}
|
|
if (index - NUM_STANDARD_CFF_STRINGS <= this.strings.length) {
|
return this.strings[index - NUM_STANDARD_CFF_STRINGS];
|
}
|
|
return CFFStandardStrings[0];
|
}
|
|
getSID(str) {
|
let index = CFFStandardStrings.indexOf(str);
|
|
if (index !== -1) {
|
return index;
|
}
|
|
index = this.strings.indexOf(str);
|
|
if (index !== -1) {
|
return index + NUM_STANDARD_CFF_STRINGS;
|
}
|
|
return -1;
|
}
|
|
add(value) {
|
this.strings.push(value);
|
}
|
|
get count() {
|
return this.strings.length;
|
}
|
|
}
|
|
exports.CFFStrings = CFFStrings;
|
|
class CFFIndex {
|
constructor() {
|
this.objects = [];
|
this.length = 0;
|
}
|
|
add(data) {
|
this.length += data.length;
|
this.objects.push(data);
|
}
|
|
set(index, data) {
|
this.length += data.length - this.objects[index].length;
|
this.objects[index] = data;
|
}
|
|
get(index) {
|
return this.objects[index];
|
}
|
|
get count() {
|
return this.objects.length;
|
}
|
|
}
|
|
exports.CFFIndex = CFFIndex;
|
|
class CFFDict {
|
constructor(tables, strings) {
|
this.keyToNameMap = tables.keyToNameMap;
|
this.nameToKeyMap = tables.nameToKeyMap;
|
this.defaults = tables.defaults;
|
this.types = tables.types;
|
this.opcodes = tables.opcodes;
|
this.order = tables.order;
|
this.strings = strings;
|
this.values = Object.create(null);
|
}
|
|
setByKey(key, value) {
|
if (!(key in this.keyToNameMap)) {
|
return false;
|
}
|
|
const valueLength = value.length;
|
|
if (valueLength === 0) {
|
return true;
|
}
|
|
for (let i = 0; i < valueLength; i++) {
|
if (isNaN(value[i])) {
|
(0, _util.warn)('Invalid CFFDict value: "' + value + '" for key "' + key + '".');
|
return true;
|
}
|
}
|
|
const type = this.types[key];
|
|
if (type === "num" || type === "sid" || type === "offset") {
|
value = value[0];
|
}
|
|
this.values[key] = value;
|
return true;
|
}
|
|
setByName(name, value) {
|
if (!(name in this.nameToKeyMap)) {
|
throw new _util.FormatError(`Invalid dictionary name "${name}"`);
|
}
|
|
this.values[this.nameToKeyMap[name]] = value;
|
}
|
|
hasName(name) {
|
return this.nameToKeyMap[name] in this.values;
|
}
|
|
getByName(name) {
|
if (!(name in this.nameToKeyMap)) {
|
throw new _util.FormatError(`Invalid dictionary name ${name}"`);
|
}
|
|
const key = this.nameToKeyMap[name];
|
|
if (!(key in this.values)) {
|
return this.defaults[key];
|
}
|
|
return this.values[key];
|
}
|
|
removeByName(name) {
|
delete this.values[this.nameToKeyMap[name]];
|
}
|
|
static createTables(layout) {
|
const tables = {
|
keyToNameMap: {},
|
nameToKeyMap: {},
|
defaults: {},
|
types: {},
|
opcodes: {},
|
order: []
|
};
|
|
for (let i = 0, ii = layout.length; i < ii; ++i) {
|
const entry = layout[i];
|
const key = Array.isArray(entry[0]) ? (entry[0][0] << 8) + entry[0][1] : entry[0];
|
tables.keyToNameMap[key] = entry[1];
|
tables.nameToKeyMap[entry[1]] = key;
|
tables.types[key] = entry[2];
|
tables.defaults[key] = entry[3];
|
tables.opcodes[key] = Array.isArray(entry[0]) ? entry[0] : [entry[0]];
|
tables.order.push(key);
|
}
|
|
return tables;
|
}
|
|
}
|
|
const CFFTopDictLayout = [[[12, 30], "ROS", ["sid", "sid", "num"], null], [[12, 20], "SyntheticBase", "num", null], [0, "version", "sid", null], [1, "Notice", "sid", null], [[12, 0], "Copyright", "sid", null], [2, "FullName", "sid", null], [3, "FamilyName", "sid", null], [4, "Weight", "sid", null], [[12, 1], "isFixedPitch", "num", 0], [[12, 2], "ItalicAngle", "num", 0], [[12, 3], "UnderlinePosition", "num", -100], [[12, 4], "UnderlineThickness", "num", 50], [[12, 5], "PaintType", "num", 0], [[12, 6], "CharstringType", "num", 2], [[12, 7], "FontMatrix", ["num", "num", "num", "num", "num", "num"], [0.001, 0, 0, 0.001, 0, 0]], [13, "UniqueID", "num", null], [5, "FontBBox", ["num", "num", "num", "num"], [0, 0, 0, 0]], [[12, 8], "StrokeWidth", "num", 0], [14, "XUID", "array", null], [15, "charset", "offset", 0], [16, "Encoding", "offset", 0], [17, "CharStrings", "offset", 0], [18, "Private", ["offset", "offset"], null], [[12, 21], "PostScript", "sid", null], [[12, 22], "BaseFontName", "sid", null], [[12, 23], "BaseFontBlend", "delta", null], [[12, 31], "CIDFontVersion", "num", 0], [[12, 32], "CIDFontRevision", "num", 0], [[12, 33], "CIDFontType", "num", 0], [[12, 34], "CIDCount", "num", 8720], [[12, 35], "UIDBase", "num", null], [[12, 37], "FDSelect", "offset", null], [[12, 36], "FDArray", "offset", null], [[12, 38], "FontName", "sid", null]];
|
|
class CFFTopDict extends CFFDict {
|
static get tables() {
|
return (0, _util.shadow)(this, "tables", this.createTables(CFFTopDictLayout));
|
}
|
|
constructor(strings) {
|
super(CFFTopDict.tables, strings);
|
this.privateDict = null;
|
}
|
|
}
|
|
exports.CFFTopDict = CFFTopDict;
|
const CFFPrivateDictLayout = [[6, "BlueValues", "delta", null], [7, "OtherBlues", "delta", null], [8, "FamilyBlues", "delta", null], [9, "FamilyOtherBlues", "delta", null], [[12, 9], "BlueScale", "num", 0.039625], [[12, 10], "BlueShift", "num", 7], [[12, 11], "BlueFuzz", "num", 1], [10, "StdHW", "num", null], [11, "StdVW", "num", null], [[12, 12], "StemSnapH", "delta", null], [[12, 13], "StemSnapV", "delta", null], [[12, 14], "ForceBold", "num", 0], [[12, 17], "LanguageGroup", "num", 0], [[12, 18], "ExpansionFactor", "num", 0.06], [[12, 19], "initialRandomSeed", "num", 0], [20, "defaultWidthX", "num", 0], [21, "nominalWidthX", "num", 0], [19, "Subrs", "offset", null]];
|
|
class CFFPrivateDict extends CFFDict {
|
static get tables() {
|
return (0, _util.shadow)(this, "tables", this.createTables(CFFPrivateDictLayout));
|
}
|
|
constructor(strings) {
|
super(CFFPrivateDict.tables, strings);
|
this.subrsIndex = null;
|
}
|
|
}
|
|
exports.CFFPrivateDict = CFFPrivateDict;
|
const CFFCharsetPredefinedTypes = {
|
ISO_ADOBE: 0,
|
EXPERT: 1,
|
EXPERT_SUBSET: 2
|
};
|
|
class CFFCharset {
|
constructor(predefined, format, charset, raw) {
|
this.predefined = predefined;
|
this.format = format;
|
this.charset = charset;
|
this.raw = raw;
|
}
|
|
}
|
|
exports.CFFCharset = CFFCharset;
|
|
class CFFEncoding {
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constructor(predefined, format, encoding, raw) {
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this.predefined = predefined;
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this.format = format;
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this.encoding = encoding;
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this.raw = raw;
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}
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|
}
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class CFFFDSelect {
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constructor(format, fdSelect) {
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this.format = format;
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this.fdSelect = fdSelect;
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}
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getFDIndex(glyphIndex) {
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if (glyphIndex < 0 || glyphIndex >= this.fdSelect.length) {
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return -1;
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}
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return this.fdSelect[glyphIndex];
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}
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}
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exports.CFFFDSelect = CFFFDSelect;
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class CFFOffsetTracker {
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constructor() {
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this.offsets = Object.create(null);
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}
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isTracking(key) {
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return key in this.offsets;
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}
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track(key, location) {
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if (key in this.offsets) {
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throw new _util.FormatError(`Already tracking location of ${key}`);
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}
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this.offsets[key] = location;
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}
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offset(value) {
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for (const key in this.offsets) {
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this.offsets[key] += value;
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}
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}
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setEntryLocation(key, values, output) {
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if (!(key in this.offsets)) {
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throw new _util.FormatError(`Not tracking location of ${key}`);
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}
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const data = output.data;
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const dataOffset = this.offsets[key];
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const size = 5;
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for (let i = 0, ii = values.length; i < ii; ++i) {
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const offset0 = i * size + dataOffset;
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const offset1 = offset0 + 1;
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const offset2 = offset0 + 2;
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const offset3 = offset0 + 3;
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const offset4 = offset0 + 4;
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if (data[offset0] !== 0x1d || data[offset1] !== 0 || data[offset2] !== 0 || data[offset3] !== 0 || data[offset4] !== 0) {
|
throw new _util.FormatError("writing to an offset that is not empty");
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}
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const value = values[i];
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data[offset0] = 0x1d;
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data[offset1] = value >> 24 & 0xff;
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data[offset2] = value >> 16 & 0xff;
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data[offset3] = value >> 8 & 0xff;
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data[offset4] = value & 0xff;
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}
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}
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}
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class CFFCompiler {
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constructor(cff) {
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this.cff = cff;
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}
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compile() {
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const cff = this.cff;
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const output = {
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data: [],
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length: 0,
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add(data) {
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this.data = this.data.concat(data);
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this.length = this.data.length;
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}
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};
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const header = this.compileHeader(cff.header);
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output.add(header);
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const nameIndex = this.compileNameIndex(cff.names);
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output.add(nameIndex);
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if (cff.isCIDFont) {
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if (cff.topDict.hasName("FontMatrix")) {
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const base = cff.topDict.getByName("FontMatrix");
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cff.topDict.removeByName("FontMatrix");
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for (let i = 0, ii = cff.fdArray.length; i < ii; i++) {
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const subDict = cff.fdArray[i];
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let matrix = base.slice(0);
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if (subDict.hasName("FontMatrix")) {
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matrix = _util.Util.transform(matrix, subDict.getByName("FontMatrix"));
|
}
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|
subDict.setByName("FontMatrix", matrix);
|
}
|
}
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}
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const xuid = cff.topDict.getByName("XUID");
|
|
if (xuid && xuid.length > 16) {
|
cff.topDict.removeByName("XUID");
|
}
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cff.topDict.setByName("charset", 0);
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let compiled = this.compileTopDicts([cff.topDict], output.length, cff.isCIDFont);
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output.add(compiled.output);
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const topDictTracker = compiled.trackers[0];
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const stringIndex = this.compileStringIndex(cff.strings.strings);
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output.add(stringIndex);
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const globalSubrIndex = this.compileIndex(cff.globalSubrIndex);
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output.add(globalSubrIndex);
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|
if (cff.encoding && cff.topDict.hasName("Encoding")) {
|
if (cff.encoding.predefined) {
|
topDictTracker.setEntryLocation("Encoding", [cff.encoding.format], output);
|
} else {
|
const encoding = this.compileEncoding(cff.encoding);
|
topDictTracker.setEntryLocation("Encoding", [output.length], output);
|
output.add(encoding);
|
}
|
}
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|
const charset = this.compileCharset(cff.charset, cff.charStrings.count, cff.strings, cff.isCIDFont);
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topDictTracker.setEntryLocation("charset", [output.length], output);
|
output.add(charset);
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const charStrings = this.compileCharStrings(cff.charStrings);
|
topDictTracker.setEntryLocation("CharStrings", [output.length], output);
|
output.add(charStrings);
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|
if (cff.isCIDFont) {
|
topDictTracker.setEntryLocation("FDSelect", [output.length], output);
|
const fdSelect = this.compileFDSelect(cff.fdSelect);
|
output.add(fdSelect);
|
compiled = this.compileTopDicts(cff.fdArray, output.length, true);
|
topDictTracker.setEntryLocation("FDArray", [output.length], output);
|
output.add(compiled.output);
|
const fontDictTrackers = compiled.trackers;
|
this.compilePrivateDicts(cff.fdArray, fontDictTrackers, output);
|
}
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|
this.compilePrivateDicts([cff.topDict], [topDictTracker], output);
|
output.add([0]);
|
return output.data;
|
}
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|
encodeNumber(value) {
|
if (Number.isInteger(value)) {
|
return this.encodeInteger(value);
|
}
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|
return this.encodeFloat(value);
|
}
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static get EncodeFloatRegExp() {
|
return (0, _util.shadow)(this, "EncodeFloatRegExp", /\.(\d*?)(?:9{5,20}|0{5,20})\d{0,2}(?:e(.+)|$)/);
|
}
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|
encodeFloat(num) {
|
let value = num.toString();
|
const m = CFFCompiler.EncodeFloatRegExp.exec(value);
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|
if (m) {
|
const epsilon = parseFloat("1e" + ((m[2] ? +m[2] : 0) + m[1].length));
|
value = (Math.round(num * epsilon) / epsilon).toString();
|
}
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|
let nibbles = "";
|
let i, ii;
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|
for (i = 0, ii = value.length; i < ii; ++i) {
|
const a = value[i];
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|
if (a === "e") {
|
nibbles += value[++i] === "-" ? "c" : "b";
|
} else if (a === ".") {
|
nibbles += "a";
|
} else if (a === "-") {
|
nibbles += "e";
|
} else {
|
nibbles += a;
|
}
|
}
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|
nibbles += nibbles.length & 1 ? "f" : "ff";
|
const out = [30];
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|
for (i = 0, ii = nibbles.length; i < ii; i += 2) {
|
out.push(parseInt(nibbles.substring(i, i + 2), 16));
|
}
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return out;
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}
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|
encodeInteger(value) {
|
let code;
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|
if (value >= -107 && value <= 107) {
|
code = [value + 139];
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} else if (value >= 108 && value <= 1131) {
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value -= 108;
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code = [(value >> 8) + 247, value & 0xff];
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} else if (value >= -1131 && value <= -108) {
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value = -value - 108;
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code = [(value >> 8) + 251, value & 0xff];
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} else if (value >= -32768 && value <= 32767) {
|
code = [0x1c, value >> 8 & 0xff, value & 0xff];
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} else {
|
code = [0x1d, value >> 24 & 0xff, value >> 16 & 0xff, value >> 8 & 0xff, value & 0xff];
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}
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|
return code;
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}
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compileHeader(header) {
|
return [header.major, header.minor, 4, header.offSize];
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}
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compileNameIndex(names) {
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const nameIndex = new CFFIndex();
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for (let i = 0, ii = names.length; i < ii; ++i) {
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const name = names[i];
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const length = Math.min(name.length, 127);
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let sanitizedName = new Array(length);
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|
for (let j = 0; j < length; j++) {
|
let char = name[j];
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if (char < "!" || char > "~" || char === "[" || char === "]" || char === "(" || char === ")" || char === "{" || char === "}" || char === "<" || char === ">" || char === "/" || char === "%") {
|
char = "_";
|
}
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|
sanitizedName[j] = char;
|
}
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|
sanitizedName = sanitizedName.join("");
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|
if (sanitizedName === "") {
|
sanitizedName = "Bad_Font_Name";
|
}
|
|
nameIndex.add((0, _util.stringToBytes)(sanitizedName));
|
}
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|
return this.compileIndex(nameIndex);
|
}
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|
compileTopDicts(dicts, length, removeCidKeys) {
|
const fontDictTrackers = [];
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let fdArrayIndex = new CFFIndex();
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|
for (let i = 0, ii = dicts.length; i < ii; ++i) {
|
const fontDict = dicts[i];
|
|
if (removeCidKeys) {
|
fontDict.removeByName("CIDFontVersion");
|
fontDict.removeByName("CIDFontRevision");
|
fontDict.removeByName("CIDFontType");
|
fontDict.removeByName("CIDCount");
|
fontDict.removeByName("UIDBase");
|
}
|
|
const fontDictTracker = new CFFOffsetTracker();
|
const fontDictData = this.compileDict(fontDict, fontDictTracker);
|
fontDictTrackers.push(fontDictTracker);
|
fdArrayIndex.add(fontDictData);
|
fontDictTracker.offset(length);
|
}
|
|
fdArrayIndex = this.compileIndex(fdArrayIndex, fontDictTrackers);
|
return {
|
trackers: fontDictTrackers,
|
output: fdArrayIndex
|
};
|
}
|
|
compilePrivateDicts(dicts, trackers, output) {
|
for (let i = 0, ii = dicts.length; i < ii; ++i) {
|
const fontDict = dicts[i];
|
const privateDict = fontDict.privateDict;
|
|
if (!privateDict || !fontDict.hasName("Private")) {
|
throw new _util.FormatError("There must be a private dictionary.");
|
}
|
|
const privateDictTracker = new CFFOffsetTracker();
|
const privateDictData = this.compileDict(privateDict, privateDictTracker);
|
let outputLength = output.length;
|
privateDictTracker.offset(outputLength);
|
|
if (!privateDictData.length) {
|
outputLength = 0;
|
}
|
|
trackers[i].setEntryLocation("Private", [privateDictData.length, outputLength], output);
|
output.add(privateDictData);
|
|
if (privateDict.subrsIndex && privateDict.hasName("Subrs")) {
|
const subrs = this.compileIndex(privateDict.subrsIndex);
|
privateDictTracker.setEntryLocation("Subrs", [privateDictData.length], output);
|
output.add(subrs);
|
}
|
}
|
}
|
|
compileDict(dict, offsetTracker) {
|
const out = [];
|
|
for (const key of dict.order) {
|
if (!(key in dict.values)) {
|
continue;
|
}
|
|
let values = dict.values[key];
|
let types = dict.types[key];
|
|
if (!Array.isArray(types)) {
|
types = [types];
|
}
|
|
if (!Array.isArray(values)) {
|
values = [values];
|
}
|
|
if (values.length === 0) {
|
continue;
|
}
|
|
for (let j = 0, jj = types.length; j < jj; ++j) {
|
const type = types[j];
|
const value = values[j];
|
|
switch (type) {
|
case "num":
|
case "sid":
|
out.push(...this.encodeNumber(value));
|
break;
|
|
case "offset":
|
const name = dict.keyToNameMap[key];
|
|
if (!offsetTracker.isTracking(name)) {
|
offsetTracker.track(name, out.length);
|
}
|
|
out.push(0x1d, 0, 0, 0, 0);
|
break;
|
|
case "array":
|
case "delta":
|
out.push(...this.encodeNumber(value));
|
|
for (let k = 1, kk = values.length; k < kk; ++k) {
|
out.push(...this.encodeNumber(values[k]));
|
}
|
|
break;
|
|
default:
|
throw new _util.FormatError(`Unknown data type of ${type}`);
|
}
|
}
|
|
out.push(...dict.opcodes[key]);
|
}
|
|
return out;
|
}
|
|
compileStringIndex(strings) {
|
const stringIndex = new CFFIndex();
|
|
for (let i = 0, ii = strings.length; i < ii; ++i) {
|
stringIndex.add((0, _util.stringToBytes)(strings[i]));
|
}
|
|
return this.compileIndex(stringIndex);
|
}
|
|
compileGlobalSubrIndex() {
|
const globalSubrIndex = this.cff.globalSubrIndex;
|
this.out.writeByteArray(this.compileIndex(globalSubrIndex));
|
}
|
|
compileCharStrings(charStrings) {
|
const charStringsIndex = new CFFIndex();
|
|
for (let i = 0; i < charStrings.count; i++) {
|
const glyph = charStrings.get(i);
|
|
if (glyph.length === 0) {
|
charStringsIndex.add(new Uint8Array([0x8b, 0x0e]));
|
continue;
|
}
|
|
charStringsIndex.add(glyph);
|
}
|
|
return this.compileIndex(charStringsIndex);
|
}
|
|
compileCharset(charset, numGlyphs, strings, isCIDFont) {
|
let out;
|
const numGlyphsLessNotDef = numGlyphs - 1;
|
|
if (isCIDFont) {
|
out = new Uint8Array([2, 0, 0, numGlyphsLessNotDef >> 8 & 0xff, numGlyphsLessNotDef & 0xff]);
|
} else {
|
const length = 1 + numGlyphsLessNotDef * 2;
|
out = new Uint8Array(length);
|
out[0] = 0;
|
let charsetIndex = 0;
|
const numCharsets = charset.charset.length;
|
let warned = false;
|
|
for (let i = 1; i < out.length; i += 2) {
|
let sid = 0;
|
|
if (charsetIndex < numCharsets) {
|
const name = charset.charset[charsetIndex++];
|
sid = strings.getSID(name);
|
|
if (sid === -1) {
|
sid = 0;
|
|
if (!warned) {
|
warned = true;
|
(0, _util.warn)(`Couldn't find ${name} in CFF strings`);
|
}
|
}
|
}
|
|
out[i] = sid >> 8 & 0xff;
|
out[i + 1] = sid & 0xff;
|
}
|
}
|
|
return this.compileTypedArray(out);
|
}
|
|
compileEncoding(encoding) {
|
return this.compileTypedArray(encoding.raw);
|
}
|
|
compileFDSelect(fdSelect) {
|
const format = fdSelect.format;
|
let out, i;
|
|
switch (format) {
|
case 0:
|
out = new Uint8Array(1 + fdSelect.fdSelect.length);
|
out[0] = format;
|
|
for (i = 0; i < fdSelect.fdSelect.length; i++) {
|
out[i + 1] = fdSelect.fdSelect[i];
|
}
|
|
break;
|
|
case 3:
|
const start = 0;
|
let lastFD = fdSelect.fdSelect[0];
|
const ranges = [format, 0, 0, start >> 8 & 0xff, start & 0xff, lastFD];
|
|
for (i = 1; i < fdSelect.fdSelect.length; i++) {
|
const currentFD = fdSelect.fdSelect[i];
|
|
if (currentFD !== lastFD) {
|
ranges.push(i >> 8 & 0xff, i & 0xff, currentFD);
|
lastFD = currentFD;
|
}
|
}
|
|
const numRanges = (ranges.length - 3) / 3;
|
ranges[1] = numRanges >> 8 & 0xff;
|
ranges[2] = numRanges & 0xff;
|
ranges.push(i >> 8 & 0xff, i & 0xff);
|
out = new Uint8Array(ranges);
|
break;
|
}
|
|
return this.compileTypedArray(out);
|
}
|
|
compileTypedArray(data) {
|
const out = [];
|
|
for (let i = 0, ii = data.length; i < ii; ++i) {
|
out[i] = data[i];
|
}
|
|
return out;
|
}
|
|
compileIndex(index, trackers = []) {
|
const objects = index.objects;
|
const count = objects.length;
|
|
if (count === 0) {
|
return [0, 0];
|
}
|
|
const data = [count >> 8 & 0xff, count & 0xff];
|
let lastOffset = 1,
|
i;
|
|
for (i = 0; i < count; ++i) {
|
lastOffset += objects[i].length;
|
}
|
|
let offsetSize;
|
|
if (lastOffset < 0x100) {
|
offsetSize = 1;
|
} else if (lastOffset < 0x10000) {
|
offsetSize = 2;
|
} else if (lastOffset < 0x1000000) {
|
offsetSize = 3;
|
} else {
|
offsetSize = 4;
|
}
|
|
data.push(offsetSize);
|
let relativeOffset = 1;
|
|
for (i = 0; i < count + 1; i++) {
|
if (offsetSize === 1) {
|
data.push(relativeOffset & 0xff);
|
} else if (offsetSize === 2) {
|
data.push(relativeOffset >> 8 & 0xff, relativeOffset & 0xff);
|
} else if (offsetSize === 3) {
|
data.push(relativeOffset >> 16 & 0xff, relativeOffset >> 8 & 0xff, relativeOffset & 0xff);
|
} else {
|
data.push(relativeOffset >>> 24 & 0xff, relativeOffset >> 16 & 0xff, relativeOffset >> 8 & 0xff, relativeOffset & 0xff);
|
}
|
|
if (objects[i]) {
|
relativeOffset += objects[i].length;
|
}
|
}
|
|
for (i = 0; i < count; i++) {
|
if (trackers[i]) {
|
trackers[i].offset(data.length);
|
}
|
|
for (let j = 0, jj = objects[i].length; j < jj; j++) {
|
data.push(objects[i][j]);
|
}
|
}
|
|
return data;
|
}
|
|
}
|
|
exports.CFFCompiler = CFFCompiler;
|
