66 lines
4.4 KiB
JavaScript
66 lines
4.4 KiB
JavaScript
import { toCharCode } from "./strings";
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// Mapping from PDFDocEncoding to Unicode code point
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var pdfDocEncodingToUnicode = new Uint16Array(256);
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// Initialize the code points which are the same
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for (var idx = 0; idx < 256; idx++) {
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pdfDocEncodingToUnicode[idx] = idx;
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}
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// Set differences (see "Table D.2 – PDFDocEncoding Character Set" of the PDF spec)
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pdfDocEncodingToUnicode[0x16] = toCharCode('\u0017'); // SYNCRONOUS IDLE
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pdfDocEncodingToUnicode[0x18] = toCharCode('\u02D8'); // BREVE
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pdfDocEncodingToUnicode[0x19] = toCharCode('\u02C7'); // CARON
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pdfDocEncodingToUnicode[0x1a] = toCharCode('\u02C6'); // MODIFIER LETTER CIRCUMFLEX ACCENT
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pdfDocEncodingToUnicode[0x1b] = toCharCode('\u02D9'); // DOT ABOVE
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pdfDocEncodingToUnicode[0x1c] = toCharCode('\u02DD'); // DOUBLE ACUTE ACCENT
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pdfDocEncodingToUnicode[0x1d] = toCharCode('\u02DB'); // OGONEK
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pdfDocEncodingToUnicode[0x1e] = toCharCode('\u02DA'); // RING ABOVE
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pdfDocEncodingToUnicode[0x1f] = toCharCode('\u02DC'); // SMALL TILDE
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pdfDocEncodingToUnicode[0x7f] = toCharCode('\uFFFD'); // REPLACEMENT CHARACTER (box with questionmark)
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pdfDocEncodingToUnicode[0x80] = toCharCode('\u2022'); // BULLET
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pdfDocEncodingToUnicode[0x81] = toCharCode('\u2020'); // DAGGER
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pdfDocEncodingToUnicode[0x82] = toCharCode('\u2021'); // DOUBLE DAGGER
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pdfDocEncodingToUnicode[0x83] = toCharCode('\u2026'); // HORIZONTAL ELLIPSIS
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pdfDocEncodingToUnicode[0x84] = toCharCode('\u2014'); // EM DASH
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pdfDocEncodingToUnicode[0x85] = toCharCode('\u2013'); // EN DASH
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pdfDocEncodingToUnicode[0x86] = toCharCode('\u0192'); // LATIN SMALL LETTER SCRIPT F
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pdfDocEncodingToUnicode[0x87] = toCharCode('\u2044'); // FRACTION SLASH (solidus)
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pdfDocEncodingToUnicode[0x88] = toCharCode('\u2039'); // SINGLE LEFT-POINTING ANGLE QUOTATION MARK
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pdfDocEncodingToUnicode[0x89] = toCharCode('\u203A'); // SINGLE RIGHT-POINTING ANGLE QUOTATION MARK
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pdfDocEncodingToUnicode[0x8a] = toCharCode('\u2212'); // MINUS SIGN
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pdfDocEncodingToUnicode[0x8b] = toCharCode('\u2030'); // PER MILLE SIGN
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pdfDocEncodingToUnicode[0x8c] = toCharCode('\u201E'); // DOUBLE LOW-9 QUOTATION MARK (quotedblbase)
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pdfDocEncodingToUnicode[0x8d] = toCharCode('\u201C'); // LEFT DOUBLE QUOTATION MARK (quotedblleft)
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pdfDocEncodingToUnicode[0x8e] = toCharCode('\u201D'); // RIGHT DOUBLE QUOTATION MARK (quotedblright)
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pdfDocEncodingToUnicode[0x8f] = toCharCode('\u2018'); // LEFT SINGLE QUOTATION MARK (quoteleft)
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pdfDocEncodingToUnicode[0x90] = toCharCode('\u2019'); // RIGHT SINGLE QUOTATION MARK (quoteright)
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pdfDocEncodingToUnicode[0x91] = toCharCode('\u201A'); // SINGLE LOW-9 QUOTATION MARK (quotesinglbase)
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pdfDocEncodingToUnicode[0x92] = toCharCode('\u2122'); // TRADE MARK SIGN
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pdfDocEncodingToUnicode[0x93] = toCharCode('\uFB01'); // LATIN SMALL LIGATURE FI
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pdfDocEncodingToUnicode[0x94] = toCharCode('\uFB02'); // LATIN SMALL LIGATURE FL
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pdfDocEncodingToUnicode[0x95] = toCharCode('\u0141'); // LATIN CAPITAL LETTER L WITH STROKE
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pdfDocEncodingToUnicode[0x96] = toCharCode('\u0152'); // LATIN CAPITAL LIGATURE OE
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pdfDocEncodingToUnicode[0x97] = toCharCode('\u0160'); // LATIN CAPITAL LETTER S WITH CARON
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pdfDocEncodingToUnicode[0x98] = toCharCode('\u0178'); // LATIN CAPITAL LETTER Y WITH DIAERESIS
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pdfDocEncodingToUnicode[0x99] = toCharCode('\u017D'); // LATIN CAPITAL LETTER Z WITH CARON
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pdfDocEncodingToUnicode[0x9a] = toCharCode('\u0131'); // LATIN SMALL LETTER DOTLESS I
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pdfDocEncodingToUnicode[0x9b] = toCharCode('\u0142'); // LATIN SMALL LETTER L WITH STROKE
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pdfDocEncodingToUnicode[0x9c] = toCharCode('\u0153'); // LATIN SMALL LIGATURE OE
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pdfDocEncodingToUnicode[0x9d] = toCharCode('\u0161'); // LATIN SMALL LETTER S WITH CARON
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pdfDocEncodingToUnicode[0x9e] = toCharCode('\u017E'); // LATIN SMALL LETTER Z WITH CARON
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pdfDocEncodingToUnicode[0x9f] = toCharCode('\uFFFD'); // REPLACEMENT CHARACTER (box with questionmark)
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pdfDocEncodingToUnicode[0xa0] = toCharCode('\u20AC'); // EURO SIGN
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pdfDocEncodingToUnicode[0xad] = toCharCode('\uFFFD'); // REPLACEMENT CHARACTER (box with questionmark)
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/**
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* Decode a byte array into a string using PDFDocEncoding.
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*
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* @param bytes a byte array (decimal representation) containing a string
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* encoded with PDFDocEncoding.
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*/
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export var pdfDocEncodingDecode = function (bytes) {
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var codePoints = new Array(bytes.length);
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for (var idx = 0, len = bytes.length; idx < len; idx++) {
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codePoints[idx] = pdfDocEncodingToUnicode[bytes[idx]];
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}
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return String.fromCodePoint.apply(String, codePoints);
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};
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//# sourceMappingURL=pdfDocEncoding.js.map
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