| 1 | 'use strict';
|
|---|
| 2 |
|
|---|
| 3 | const UNDEFINED_CODE_POINTS = [
|
|---|
| 4 | 0xfffe,
|
|---|
| 5 | 0xffff,
|
|---|
| 6 | 0x1fffe,
|
|---|
| 7 | 0x1ffff,
|
|---|
| 8 | 0x2fffe,
|
|---|
| 9 | 0x2ffff,
|
|---|
| 10 | 0x3fffe,
|
|---|
| 11 | 0x3ffff,
|
|---|
| 12 | 0x4fffe,
|
|---|
| 13 | 0x4ffff,
|
|---|
| 14 | 0x5fffe,
|
|---|
| 15 | 0x5ffff,
|
|---|
| 16 | 0x6fffe,
|
|---|
| 17 | 0x6ffff,
|
|---|
| 18 | 0x7fffe,
|
|---|
| 19 | 0x7ffff,
|
|---|
| 20 | 0x8fffe,
|
|---|
| 21 | 0x8ffff,
|
|---|
| 22 | 0x9fffe,
|
|---|
| 23 | 0x9ffff,
|
|---|
| 24 | 0xafffe,
|
|---|
| 25 | 0xaffff,
|
|---|
| 26 | 0xbfffe,
|
|---|
| 27 | 0xbffff,
|
|---|
| 28 | 0xcfffe,
|
|---|
| 29 | 0xcffff,
|
|---|
| 30 | 0xdfffe,
|
|---|
| 31 | 0xdffff,
|
|---|
| 32 | 0xefffe,
|
|---|
| 33 | 0xeffff,
|
|---|
| 34 | 0xffffe,
|
|---|
| 35 | 0xfffff,
|
|---|
| 36 | 0x10fffe,
|
|---|
| 37 | 0x10ffff
|
|---|
| 38 | ];
|
|---|
| 39 |
|
|---|
| 40 | exports.REPLACEMENT_CHARACTER = '\uFFFD';
|
|---|
| 41 |
|
|---|
| 42 | exports.CODE_POINTS = {
|
|---|
| 43 | EOF: -1,
|
|---|
| 44 | NULL: 0x00,
|
|---|
| 45 | TABULATION: 0x09,
|
|---|
| 46 | CARRIAGE_RETURN: 0x0d,
|
|---|
| 47 | LINE_FEED: 0x0a,
|
|---|
| 48 | FORM_FEED: 0x0c,
|
|---|
| 49 | SPACE: 0x20,
|
|---|
| 50 | EXCLAMATION_MARK: 0x21,
|
|---|
| 51 | QUOTATION_MARK: 0x22,
|
|---|
| 52 | NUMBER_SIGN: 0x23,
|
|---|
| 53 | AMPERSAND: 0x26,
|
|---|
| 54 | APOSTROPHE: 0x27,
|
|---|
| 55 | HYPHEN_MINUS: 0x2d,
|
|---|
| 56 | SOLIDUS: 0x2f,
|
|---|
| 57 | DIGIT_0: 0x30,
|
|---|
| 58 | DIGIT_9: 0x39,
|
|---|
| 59 | SEMICOLON: 0x3b,
|
|---|
| 60 | LESS_THAN_SIGN: 0x3c,
|
|---|
| 61 | EQUALS_SIGN: 0x3d,
|
|---|
| 62 | GREATER_THAN_SIGN: 0x3e,
|
|---|
| 63 | QUESTION_MARK: 0x3f,
|
|---|
| 64 | LATIN_CAPITAL_A: 0x41,
|
|---|
| 65 | LATIN_CAPITAL_F: 0x46,
|
|---|
| 66 | LATIN_CAPITAL_X: 0x58,
|
|---|
| 67 | LATIN_CAPITAL_Z: 0x5a,
|
|---|
| 68 | RIGHT_SQUARE_BRACKET: 0x5d,
|
|---|
| 69 | GRAVE_ACCENT: 0x60,
|
|---|
| 70 | LATIN_SMALL_A: 0x61,
|
|---|
| 71 | LATIN_SMALL_F: 0x66,
|
|---|
| 72 | LATIN_SMALL_X: 0x78,
|
|---|
| 73 | LATIN_SMALL_Z: 0x7a,
|
|---|
| 74 | REPLACEMENT_CHARACTER: 0xfffd
|
|---|
| 75 | };
|
|---|
| 76 |
|
|---|
| 77 | exports.CODE_POINT_SEQUENCES = {
|
|---|
| 78 | DASH_DASH_STRING: [0x2d, 0x2d], //--
|
|---|
| 79 | DOCTYPE_STRING: [0x44, 0x4f, 0x43, 0x54, 0x59, 0x50, 0x45], //DOCTYPE
|
|---|
| 80 | CDATA_START_STRING: [0x5b, 0x43, 0x44, 0x41, 0x54, 0x41, 0x5b], //[CDATA[
|
|---|
| 81 | SCRIPT_STRING: [0x73, 0x63, 0x72, 0x69, 0x70, 0x74], //script
|
|---|
| 82 | PUBLIC_STRING: [0x50, 0x55, 0x42, 0x4c, 0x49, 0x43], //PUBLIC
|
|---|
| 83 | SYSTEM_STRING: [0x53, 0x59, 0x53, 0x54, 0x45, 0x4d] //SYSTEM
|
|---|
| 84 | };
|
|---|
| 85 |
|
|---|
| 86 | //Surrogates
|
|---|
| 87 | exports.isSurrogate = function(cp) {
|
|---|
| 88 | return cp >= 0xd800 && cp <= 0xdfff;
|
|---|
| 89 | };
|
|---|
| 90 |
|
|---|
| 91 | exports.isSurrogatePair = function(cp) {
|
|---|
| 92 | return cp >= 0xdc00 && cp <= 0xdfff;
|
|---|
| 93 | };
|
|---|
| 94 |
|
|---|
| 95 | exports.getSurrogatePairCodePoint = function(cp1, cp2) {
|
|---|
| 96 | return (cp1 - 0xd800) * 0x400 + 0x2400 + cp2;
|
|---|
| 97 | };
|
|---|
| 98 |
|
|---|
| 99 | //NOTE: excluding NULL and ASCII whitespace
|
|---|
| 100 | exports.isControlCodePoint = function(cp) {
|
|---|
| 101 | return (
|
|---|
| 102 | (cp !== 0x20 && cp !== 0x0a && cp !== 0x0d && cp !== 0x09 && cp !== 0x0c && cp >= 0x01 && cp <= 0x1f) ||
|
|---|
| 103 | (cp >= 0x7f && cp <= 0x9f)
|
|---|
| 104 | );
|
|---|
| 105 | };
|
|---|
| 106 |
|
|---|
| 107 | exports.isUndefinedCodePoint = function(cp) {
|
|---|
| 108 | return (cp >= 0xfdd0 && cp <= 0xfdef) || UNDEFINED_CODE_POINTS.indexOf(cp) > -1;
|
|---|
| 109 | };
|
|---|
