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109 lines
2.4 KiB
109 lines
2.4 KiB
'use strict'; |
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const UNDEFINED_CODE_POINTS = [ |
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0xfffe, |
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0xffff, |
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0x1fffe, |
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0x1ffff, |
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0x2fffe, |
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0x2ffff, |
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0x3fffe, |
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0x3ffff, |
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0x4fffe, |
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0x4ffff, |
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0x5fffe, |
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0x5ffff, |
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0x6fffe, |
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0x6ffff, |
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0x7fffe, |
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0x7ffff, |
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0x8fffe, |
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0x8ffff, |
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0x9fffe, |
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0x9ffff, |
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0xafffe, |
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0xaffff, |
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0xbfffe, |
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0xbffff, |
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0xcfffe, |
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0xcffff, |
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0xdfffe, |
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0xdffff, |
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0xefffe, |
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0xeffff, |
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0xffffe, |
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0xfffff, |
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0x10fffe, |
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0x10ffff |
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]; |
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exports.REPLACEMENT_CHARACTER = '\uFFFD'; |
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exports.CODE_POINTS = { |
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EOF: -1, |
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NULL: 0x00, |
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TABULATION: 0x09, |
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CARRIAGE_RETURN: 0x0d, |
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LINE_FEED: 0x0a, |
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FORM_FEED: 0x0c, |
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SPACE: 0x20, |
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EXCLAMATION_MARK: 0x21, |
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QUOTATION_MARK: 0x22, |
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NUMBER_SIGN: 0x23, |
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AMPERSAND: 0x26, |
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APOSTROPHE: 0x27, |
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HYPHEN_MINUS: 0x2d, |
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SOLIDUS: 0x2f, |
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DIGIT_0: 0x30, |
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DIGIT_9: 0x39, |
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SEMICOLON: 0x3b, |
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LESS_THAN_SIGN: 0x3c, |
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EQUALS_SIGN: 0x3d, |
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GREATER_THAN_SIGN: 0x3e, |
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QUESTION_MARK: 0x3f, |
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LATIN_CAPITAL_A: 0x41, |
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LATIN_CAPITAL_F: 0x46, |
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LATIN_CAPITAL_X: 0x58, |
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LATIN_CAPITAL_Z: 0x5a, |
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RIGHT_SQUARE_BRACKET: 0x5d, |
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GRAVE_ACCENT: 0x60, |
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LATIN_SMALL_A: 0x61, |
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LATIN_SMALL_F: 0x66, |
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LATIN_SMALL_X: 0x78, |
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LATIN_SMALL_Z: 0x7a, |
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REPLACEMENT_CHARACTER: 0xfffd |
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}; |
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exports.CODE_POINT_SEQUENCES = { |
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DASH_DASH_STRING: [0x2d, 0x2d], //-- |
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DOCTYPE_STRING: [0x44, 0x4f, 0x43, 0x54, 0x59, 0x50, 0x45], //DOCTYPE |
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CDATA_START_STRING: [0x5b, 0x43, 0x44, 0x41, 0x54, 0x41, 0x5b], //[CDATA[ |
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SCRIPT_STRING: [0x73, 0x63, 0x72, 0x69, 0x70, 0x74], //script |
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PUBLIC_STRING: [0x50, 0x55, 0x42, 0x4c, 0x49, 0x43], //PUBLIC |
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SYSTEM_STRING: [0x53, 0x59, 0x53, 0x54, 0x45, 0x4d] //SYSTEM |
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}; |
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//Surrogates |
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exports.isSurrogate = function(cp) { |
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return cp >= 0xd800 && cp <= 0xdfff; |
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}; |
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exports.isSurrogatePair = function(cp) { |
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return cp >= 0xdc00 && cp <= 0xdfff; |
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}; |
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exports.getSurrogatePairCodePoint = function(cp1, cp2) { |
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return (cp1 - 0xd800) * 0x400 + 0x2400 + cp2; |
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}; |
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//NOTE: excluding NULL and ASCII whitespace |
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exports.isControlCodePoint = function(cp) { |
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return ( |
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(cp !== 0x20 && cp !== 0x0a && cp !== 0x0d && cp !== 0x09 && cp !== 0x0c && cp >= 0x01 && cp <= 0x1f) || |
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(cp >= 0x7f && cp <= 0x9f) |
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); |
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}; |
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exports.isUndefinedCodePoint = function(cp) { |
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return (cp >= 0xfdd0 && cp <= 0xfdef) || UNDEFINED_CODE_POINTS.indexOf(cp) > -1; |
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};
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