pdfjs-dist
Version:
Generic build of Mozilla's PDF.js library.
155 lines (154 loc) • 7.78 kB
JavaScript
/**
* @licstart The following is the entire license notice for the
* JavaScript code in this page
*
* Copyright 2022 Mozilla Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* @licend The above is the entire license notice for the
* JavaScript code in this page
*/
;
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.SEAC_ANALYSIS_ENABLED = exports.MacStandardGlyphOrdering = exports.FontFlags = void 0;
exports.getFontType = getFontType;
exports.normalizeFontName = normalizeFontName;
exports.recoverGlyphName = recoverGlyphName;
exports.type1FontGlyphMapping = type1FontGlyphMapping;
var _util = require("../shared/util.js");
var _encodings = require("./encodings.js");
var _glyphlist = require("./glyphlist.js");
var _unicode = require("./unicode.js");
const SEAC_ANALYSIS_ENABLED = true;
exports.SEAC_ANALYSIS_ENABLED = SEAC_ANALYSIS_ENABLED;
const FontFlags = {
FixedPitch: 1,
Serif: 2,
Symbolic: 4,
Script: 8,
Nonsymbolic: 32,
Italic: 64,
AllCap: 65536,
SmallCap: 131072,
ForceBold: 262144
};
exports.FontFlags = FontFlags;
const MacStandardGlyphOrdering = [".notdef", ".null", "nonmarkingreturn", "space", "exclam", "quotedbl", "numbersign", "dollar", "percent", "ampersand", "quotesingle", "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", "grave", "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", "Adieresis", "Aring", "Ccedilla", "Eacute", "Ntilde", "Odieresis", "Udieresis", "aacute", "agrave", "acircumflex", "adieresis", "atilde", "aring", "ccedilla", "eacute", "egrave", "ecircumflex", "edieresis", "iacute", "igrave", "icircumflex", "idieresis", "ntilde", "oacute", "ograve", "ocircumflex", "odieresis", "otilde", "uacute", "ugrave", "ucircumflex", "udieresis", "dagger", "degree", "cent", "sterling", "section", "bullet", "paragraph", "germandbls", "registered", "copyright", "trademark", "acute", "dieresis", "notequal", "AE", "Oslash", "infinity", "plusminus", "lessequal", "greaterequal", "yen", "mu", "partialdiff", "summation", "product", "pi", "integral", "ordfeminine", "ordmasculine", "Omega", "ae", "oslash", "questiondown", "exclamdown", "logicalnot", "radical", "florin", "approxequal", "Delta", "guillemotleft", "guillemotright", "ellipsis", "nonbreakingspace", "Agrave", "Atilde", "Otilde", "OE", "oe", "endash", "emdash", "quotedblleft", "quotedblright", "quoteleft", "quoteright", "divide", "lozenge", "ydieresis", "Ydieresis", "fraction", "currency", "guilsinglleft", "guilsinglright", "fi", "fl", "daggerdbl", "periodcentered", "quotesinglbase", "quotedblbase", "perthousand", "Acircumflex", "Ecircumflex", "Aacute", "Edieresis", "Egrave", "Iacute", "Icircumflex", "Idieresis", "Igrave", "Oacute", "Ocircumflex", "apple", "Ograve", "Uacute", "Ucircumflex", "Ugrave", "dotlessi", "circumflex", "tilde", "macron", "breve", "dotaccent", "ring", "cedilla", "hungarumlaut", "ogonek", "caron", "Lslash", "lslash", "Scaron", "scaron", "Zcaron", "zcaron", "brokenbar", "Eth", "eth", "Yacute", "yacute", "Thorn", "thorn", "minus", "multiply", "onesuperior", "twosuperior", "threesuperior", "onehalf", "onequarter", "threequarters", "franc", "Gbreve", "gbreve", "Idotaccent", "Scedilla", "scedilla", "Cacute", "cacute", "Ccaron", "ccaron", "dcroat"];
exports.MacStandardGlyphOrdering = MacStandardGlyphOrdering;
function getFontType(type, subtype, isStandardFont = false) {
switch (type) {
case "Type1":
if (isStandardFont) {
return _util.FontType.TYPE1STANDARD;
}
return subtype === "Type1C" ? _util.FontType.TYPE1C : _util.FontType.TYPE1;
case "CIDFontType0":
return subtype === "CIDFontType0C" ? _util.FontType.CIDFONTTYPE0C : _util.FontType.CIDFONTTYPE0;
case "OpenType":
return _util.FontType.OPENTYPE;
case "TrueType":
return _util.FontType.TRUETYPE;
case "CIDFontType2":
return _util.FontType.CIDFONTTYPE2;
case "MMType1":
return _util.FontType.MMTYPE1;
case "Type0":
return _util.FontType.TYPE0;
default:
return _util.FontType.UNKNOWN;
}
}
function recoverGlyphName(name, glyphsUnicodeMap) {
if (glyphsUnicodeMap[name] !== undefined) {
return name;
}
const unicode = (0, _unicode.getUnicodeForGlyph)(name, glyphsUnicodeMap);
if (unicode !== -1) {
for (const key in glyphsUnicodeMap) {
if (glyphsUnicodeMap[key] === unicode) {
return key;
}
}
}
(0, _util.info)("Unable to recover a standard glyph name for: " + name);
return name;
}
function type1FontGlyphMapping(properties, builtInEncoding, glyphNames) {
const charCodeToGlyphId = Object.create(null);
let glyphId, charCode, baseEncoding;
const isSymbolicFont = !!(properties.flags & FontFlags.Symbolic);
if (properties.isInternalFont) {
baseEncoding = builtInEncoding;
for (charCode = 0; charCode < baseEncoding.length; charCode++) {
glyphId = glyphNames.indexOf(baseEncoding[charCode]);
if (glyphId >= 0) {
charCodeToGlyphId[charCode] = glyphId;
} else {
charCodeToGlyphId[charCode] = 0;
}
}
} else if (properties.baseEncodingName) {
baseEncoding = (0, _encodings.getEncoding)(properties.baseEncodingName);
for (charCode = 0; charCode < baseEncoding.length; charCode++) {
glyphId = glyphNames.indexOf(baseEncoding[charCode]);
if (glyphId >= 0) {
charCodeToGlyphId[charCode] = glyphId;
} else {
charCodeToGlyphId[charCode] = 0;
}
}
} else if (isSymbolicFont) {
for (charCode in builtInEncoding) {
charCodeToGlyphId[charCode] = builtInEncoding[charCode];
}
} else {
baseEncoding = _encodings.StandardEncoding;
for (charCode = 0; charCode < baseEncoding.length; charCode++) {
glyphId = glyphNames.indexOf(baseEncoding[charCode]);
if (glyphId >= 0) {
charCodeToGlyphId[charCode] = glyphId;
} else {
charCodeToGlyphId[charCode] = 0;
}
}
}
const differences = properties.differences;
let glyphsUnicodeMap;
if (differences) {
for (charCode in differences) {
const glyphName = differences[charCode];
glyphId = glyphNames.indexOf(glyphName);
if (glyphId === -1) {
if (!glyphsUnicodeMap) {
glyphsUnicodeMap = (0, _glyphlist.getGlyphsUnicode)();
}
const standardGlyphName = recoverGlyphName(glyphName, glyphsUnicodeMap);
if (standardGlyphName !== glyphName) {
glyphId = glyphNames.indexOf(standardGlyphName);
}
}
if (glyphId >= 0) {
charCodeToGlyphId[charCode] = glyphId;
} else {
charCodeToGlyphId[charCode] = 0;
}
}
}
return charCodeToGlyphId;
}
function normalizeFontName(name) {
return name.replace(/[,_]/g, "-").replace(/\s/g, "");
}