Source: cssTokenizer.js 
/*
* Original at https://github.com/tabatkins/parse-css
* licensed under http://creativecommons.org/publicdomain/zero/1.0/
*
* Modifications copyright (c) Microsoft Corporation.
*
* 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.
*/
// Changes from https://github.com/tabatkins/parse-css
// - Tabs are replaced with two spaces.
// - Everything not related to tokenizing - below the first exports block - is removed.
// @ts-nocheck
(function (root, factory) {
// Universal Module Definition (UMD) to support AMD, CommonJS/Node.js,
// Rhino, and plain browser loading.
if (typeof define === 'function' && define.amd) {
define(['exports'], factory);
} else if (typeof exports !== 'undefined') {
factory(exports);
} else {
factory(root);
}
}(this, function (exports) {
var between = function (num, first, last) { return num >= first && num <= last; }
function digit(code) { return between(code, 0x30,0x39); }
function hexdigit(code) { return digit(code) || between(code, 0x41,0x46) || between(code, 0x61,0x66); }
function uppercaseletter(code) { return between(code, 0x41,0x5a); }
function lowercaseletter(code) { return between(code, 0x61,0x7a); }
function letter(code) { return uppercaseletter(code) || lowercaseletter(code); }
function nonascii(code) { return code >= 0x80; }
function namestartchar(code) { return letter(code) || nonascii(code) || code == 0x5f; }
function namechar(code) { return namestartchar(code) || digit(code) || code == 0x2d; }
function nonprintable(code) { return between(code, 0,8) || code == 0xb || between(code, 0xe,0x1f) || code == 0x7f; }
function newline(code) { return code == 0xa; }
function whitespace(code) { return newline(code) || code == 9 || code == 0x20; }
function badescape(code) { return newline(code) || isNaN(code); }
var maximumallowedcodepoint = 0x10ffff;
var InvalidCharacterError = function(message) {
this.message = message;
};
InvalidCharacterError.prototype = new Error;
InvalidCharacterError.prototype.name = 'InvalidCharacterError';
function preprocess(str) {
// Turn a string into an array of code points,
// following the preprocessing cleanup rules.
var codepoints = [];
for(var i = 0; i < str.length; i++) {
var code = str.charCodeAt(i);
if(code == 0xd && str.charCodeAt(i+1) == 0xa) {
code = 0xa; i++;
}
if(code == 0xd || code == 0xc) code = 0xa;
if(code == 0x0) code = 0xfffd;
if(between(code, 0xd800, 0xdbff) && between(str.charCodeAt(i+1), 0xdc00, 0xdfff)) {
// Decode a surrogate pair into an astral codepoint.
var lead = code - 0xd800;
var trail = str.charCodeAt(i+1) - 0xdc00;
code = Math.pow(2, 16) + lead * Math.pow(2, 10) + trail;
i++;
}
codepoints.push(code);
}
return codepoints;
}
function stringFromCode(code) {
if(code <= 0xffff) return String.fromCharCode(code);
// Otherwise, encode astral char as surrogate pair.
code -= Math.pow(2, 16);
var lead = Math.floor(code/Math.pow(2, 10)) + 0xd800;
var trail = code % Math.pow(2, 10) + 0xdc00;
return String.fromCharCode(lead) + String.fromCharCode(trail);
}
function tokenize(str) {
str = preprocess(str);
var i = -1;
var tokens = [];
var code;
// Line number information.
var line = 0;
var column = 0;
// The only use of lastLineLength is in reconsume().
var lastLineLength = 0;
var incrLineno = function() {
line += 1;
lastLineLength = column;
column = 0;
};
var locStart = {line:line, column:column};
var codepoint = function(i) {
if(i >= str.length) {
return -1;
}
return str[i];
}
var next = function(num) {
if(num === undefined)
num = 1;
if(num > 3)
throw "Spec Error: no more than three codepoints of lookahead.";
return codepoint(i+num);
};
var consume = function(num) {
if(num === undefined)
num = 1;
i += num;
code = codepoint(i);
if(newline(code)) incrLineno();
else column += num;
//console.log('Consume '+i+' '+String.fromCharCode(code) + ' 0x' + code.toString(16));
return true;
};
var reconsume = function() {
i -= 1;
if (newline(code)) {
line -= 1;
column = lastLineLength;
} else {
column -= 1;
}
locStart.line = line;
locStart.column = column;
return true;
};
var eof = function(codepoint) {
if(codepoint === undefined) codepoint = code;
return codepoint == -1;
};
var donothing = function() {};
var parseerror = function() { console.log("Parse error at index " + i + ", processing codepoint 0x" + code.toString(16) + ".");return true; };
var consumeAToken = function() {
consumeComments();
consume();
if(whitespace(code)) {
while(whitespace(next())) consume();
return new WhitespaceToken;
}
else if(code == 0x22) return consumeAStringToken();
else if(code == 0x23) {
if(namechar(next()) || areAValidEscape(next(1), next(2))) {
var token = new HashToken();
if(wouldStartAnIdentifier(next(1), next(2), next(3))) token.type = "id";
token.value = consumeAName();
return token;
} else {
return new DelimToken(code);
}
}
else if(code == 0x24) {
if(next() == 0x3d) {
consume();
return new SuffixMatchToken();
} else {
return new DelimToken(code);
}
}
else if(code == 0x27) return consumeAStringToken();
else if(code == 0x28) return new OpenParenToken();
else if(code == 0x29) return new CloseParenToken();
else if(code == 0x2a) {
if(next() == 0x3d) {
consume();
return new SubstringMatchToken();
} else {
return new DelimToken(code);
}
}
else if(code == 0x2b) {
if(startsWithANumber()) {
reconsume();
return consumeANumericToken();
} else {
return new DelimToken(code);
}
}
else if(code == 0x2c) return new CommaToken();
else if(code == 0x2d) {
if(startsWithANumber()) {
reconsume();
return consumeANumericToken();
} else if(next(1) == 0x2d && next(2) == 0x3e) {
consume(2);
return new CDCToken();
} else if(startsWithAnIdentifier()) {
reconsume();
return consumeAnIdentlikeToken();
} else {
return new DelimToken(code);
}
}
else if(code == 0x2e) {
if(startsWithANumber()) {
reconsume();
return consumeANumericToken();
} else {
return new DelimToken(code);
}
}
else if(code == 0x3a) return new ColonToken;
else if(code == 0x3b) return new SemicolonToken;
else if(code == 0x3c) {
if(next(1) == 0x21 && next(2) == 0x2d && next(3) == 0x2d) {
consume(3);
return new CDOToken();
} else {
return new DelimToken(code);
}
}
else if(code == 0x40) {
if(wouldStartAnIdentifier(next(1), next(2), next(3))) {
return new AtKeywordToken(consumeAName());
} else {
return new DelimToken(code);
}
}
else if(code == 0x5b) return new OpenSquareToken();
else if(code == 0x5c) {
if(startsWithAValidEscape()) {
reconsume();
return consumeAnIdentlikeToken();
} else {
parseerror();
return new DelimToken(code);
}
}
else if(code == 0x5d) return new CloseSquareToken();
else if(code == 0x5e) {
if(next() == 0x3d) {
consume();
return new PrefixMatchToken();
} else {
return new DelimToken(code);
}
}
else if(code == 0x7b) return new OpenCurlyToken();
else if(code == 0x7c) {
if(next() == 0x3d) {
consume();
return new DashMatchToken();
} else if(next() == 0x7c) {
consume();
return new ColumnToken();
} else {
return new DelimToken(code);
}
}
else if(code == 0x7d) return new CloseCurlyToken();
else if(code == 0x7e) {
if(next() == 0x3d) {
consume();
return new IncludeMatchToken();
} else {
return new DelimToken(code);
}
}
else if(digit(code)) {
reconsume();
return consumeANumericToken();
}
else if(namestartchar(code)) {
reconsume();
return consumeAnIdentlikeToken();
}
else if(eof()) return new EOFToken();
else return new DelimToken(code);
};
var consumeComments = function() {
while(next(1) == 0x2f && next(2) == 0x2a) {
consume(2);
while(true) {
consume();
if(code == 0x2a && next() == 0x2f) {
consume();
break;
} else if(eof()) {
parseerror();
return;
}
}
}
};
var consumeANumericToken = function() {
var num = consumeANumber();
if(wouldStartAnIdentifier(next(1), next(2), next(3))) {
var token = new DimensionToken();
token.value = num.value;
token.repr = num.repr;
token.type = num.type;
token.unit = consumeAName();
return token;
} else if(next() == 0x25) {
consume();
var token = new PercentageToken();
token.value = num.value;
token.repr = num.repr;
return token;
} else {
var token = new NumberToken();
token.value = num.value;
token.repr = num.repr;
token.type = num.type;
return token;
}
};
var consumeAnIdentlikeToken = function() {
var str = consumeAName();
if(str.toLowerCase() == "url" && next() == 0x28) {
consume();
while(whitespace(next(1)) && whitespace(next(2))) consume();
if(next() == 0x22 || next() == 0x27) {
return new FunctionToken(str);
} else if(whitespace(next()) && (next(2) == 0x22 || next(2) == 0x27)) {
return new FunctionToken(str);
} else {
return consumeAURLToken();
}
} else if(next() == 0x28) {
consume();
return new FunctionToken(str);
} else {
return new IdentToken(str);
}
};
var consumeAStringToken = function(endingCodePoint) {
if(endingCodePoint === undefined) endingCodePoint = code;
var string = "";
while(consume()) {
if(code == endingCodePoint || eof()) {
return new StringToken(string);
} else if(newline(code)) {
parseerror();
reconsume();
return new BadStringToken();
} else if(code == 0x5c) {
if(eof(next())) {
donothing();
} else if(newline(next())) {
consume();
} else {
string += stringFromCode(consumeEscape())
}
} else {
string += stringFromCode(code);
}
}
};
var consumeAURLToken = function() {
var token = new URLToken("");
while(whitespace(next())) consume();
if(eof(next())) return token;
while(consume()) {
if(code == 0x29 || eof()) {
return token;
} else if(whitespace(code)) {
while(whitespace(next())) consume();
if(next() == 0x29 || eof(next())) {
consume();
return token;
} else {
consumeTheRemnantsOfABadURL();
return new BadURLToken();
}
} else if(code == 0x22 || code == 0x27 || code == 0x28 || nonprintable(code)) {
parseerror();
consumeTheRemnantsOfABadURL();
return new BadURLToken();
} else if(code == 0x5c) {
if(startsWithAValidEscape()) {
token.value += stringFromCode(consumeEscape());
} else {
parseerror();
consumeTheRemnantsOfABadURL();
return new BadURLToken();
}
} else {
token.value += stringFromCode(code);
}
}
};
var consumeEscape = function() {
// Assume the the current character is the \
// and the next code point is not a newline.
consume();
if(hexdigit(code)) {
// Consume 1-6 hex digits
var digits = [code];
for(var total = 0; total < 5; total++) {
if(hexdigit(next())) {
consume();
digits.push(code);
} else {
break;
}
}
if(whitespace(next())) consume();
var value = parseInt(digits.map(function(x){return String.fromCharCode(x);}).join(''), 16);
if( value > maximumallowedcodepoint ) value = 0xfffd;
return value;
} else if(eof()) {
return 0xfffd;
} else {
return code;
}
};
var areAValidEscape = function(c1, c2) {
if(c1 != 0x5c) return false;
if(newline(c2)) return false;
return true;
};
var startsWithAValidEscape = function() {
return areAValidEscape(code, next());
};
var wouldStartAnIdentifier = function(c1, c2, c3) {
if(c1 == 0x2d) {
return namestartchar(c2) || c2 == 0x2d || areAValidEscape(c2, c3);
} else if(namestartchar(c1)) {
return true;
} else if(c1 == 0x5c) {
return areAValidEscape(c1, c2);
} else {
return false;
}
};
var startsWithAnIdentifier = function() {
return wouldStartAnIdentifier(code, next(1), next(2));
};
var wouldStartANumber = function(c1, c2, c3) {
if(c1 == 0x2b || c1 == 0x2d) {
if(digit(c2)) return true;
if(c2 == 0x2e && digit(c3)) return true;
return false;
} else if(c1 == 0x2e) {
if(digit(c2)) return true;
return false;
} else if(digit(c1)) {
return true;
} else {
return false;
}
};
var startsWithANumber = function() {
return wouldStartANumber(code, next(1), next(2));
};
var consumeAName = function() {
var result = "";
while(consume()) {
if(namechar(code)) {
result += stringFromCode(code);
} else if(startsWithAValidEscape()) {
result += stringFromCode(consumeEscape());
} else {
reconsume();
return result;
}
}
};
var consumeANumber = function() {
var repr = [];
var type = "integer";
if(next() == 0x2b || next() == 0x2d) {
consume();
repr += stringFromCode(code);
}
while(digit(next())) {
consume();
repr += stringFromCode(code);
}
if(next(1) == 0x2e && digit(next(2))) {
consume();
repr += stringFromCode(code);
consume();
repr += stringFromCode(code);
type = "number";
while(digit(next())) {
consume();
repr += stringFromCode(code);
}
}
var c1 = next(1), c2 = next(2), c3 = next(3);
if((c1 == 0x45 || c1 == 0x65) && digit(c2)) {
consume();
repr += stringFromCode(code);
consume();
repr += stringFromCode(code);
type = "number";
while(digit(next())) {
consume();
repr += stringFromCode(code);
}
} else if((c1 == 0x45 || c1 == 0x65) && (c2 == 0x2b || c2 == 0x2d) && digit(c3)) {
consume();
repr += stringFromCode(code);
consume();
repr += stringFromCode(code);
consume();
repr += stringFromCode(code);
type = "number";
while(digit(next())) {
consume();
repr += stringFromCode(code);
}
}
var value = convertAStringToANumber(repr);
return {type:type, value:value, repr:repr};
};
var convertAStringToANumber = function(string) {
// CSS's number rules are identical to JS, afaik.
return +string;
};
var consumeTheRemnantsOfABadURL = function() {
while(consume()) {
if(code == 0x29 || eof()) {
return;
} else if(startsWithAValidEscape()) {
consumeEscape();
donothing();
} else {
donothing();
}
}
};
var iterationCount = 0;
while(!eof(next())) {
tokens.push(consumeAToken());
iterationCount++;
if(iterationCount > str.length*2) return "I'm infinite-looping!";
}
return tokens;
}
function CSSParserToken() { throw "Abstract Base Class"; }
CSSParserToken.prototype.toJSON = function() {
return {token: this.tokenType};
}
CSSParserToken.prototype.toString = function() { return this.tokenType; }
CSSParserToken.prototype.toSource = function() { return ''+this; }
function BadStringToken() { return this; }
BadStringToken.prototype = Object.create(CSSParserToken.prototype);
BadStringToken.prototype.tokenType = "BADSTRING";
function BadURLToken() { return this; }
BadURLToken.prototype = Object.create(CSSParserToken.prototype);
BadURLToken.prototype.tokenType = "BADURL";
function WhitespaceToken() { return this; }
WhitespaceToken.prototype = Object.create(CSSParserToken.prototype);
WhitespaceToken.prototype.tokenType = "WHITESPACE";
WhitespaceToken.prototype.toString = function() { return "WS"; }
WhitespaceToken.prototype.toSource = function() { return " "; }
function CDOToken() { return this; }
CDOToken.prototype = Object.create(CSSParserToken.prototype);
CDOToken.prototype.tokenType = "CDO";
CDOToken.prototype.toSource = function() { return "<!--"; }
function CDCToken() { return this; }
CDCToken.prototype = Object.create(CSSParserToken.prototype);
CDCToken.prototype.tokenType = "CDC";
CDCToken.prototype.toSource = function() { return "-->"; }
function ColonToken() { return this; }
ColonToken.prototype = Object.create(CSSParserToken.prototype);
ColonToken.prototype.tokenType = ":";
function SemicolonToken() { return this; }
SemicolonToken.prototype = Object.create(CSSParserToken.prototype);
SemicolonToken.prototype.tokenType = ";";
function CommaToken() { return this; }
CommaToken.prototype = Object.create(CSSParserToken.prototype);
CommaToken.prototype.tokenType = ",";
function GroupingToken() { throw "Abstract Base Class"; }
GroupingToken.prototype = Object.create(CSSParserToken.prototype);
function OpenCurlyToken() { this.value = "{"; this.mirror = "}"; return this; }
OpenCurlyToken.prototype = Object.create(GroupingToken.prototype);
OpenCurlyToken.prototype.tokenType = "{";
function CloseCurlyToken() { this.value = "}"; this.mirror = "{"; return this; }
CloseCurlyToken.prototype = Object.create(GroupingToken.prototype);
CloseCurlyToken.prototype.tokenType = "}";
function OpenSquareToken() { this.value = "["; this.mirror = "]"; return this; }
OpenSquareToken.prototype = Object.create(GroupingToken.prototype);
OpenSquareToken.prototype.tokenType = "[";
function CloseSquareToken() { this.value = "]"; this.mirror = "["; return this; }
CloseSquareToken.prototype = Object.create(GroupingToken.prototype);
CloseSquareToken.prototype.tokenType = "]";
function OpenParenToken() { this.value = "("; this.mirror = ")"; return this; }
OpenParenToken.prototype = Object.create(GroupingToken.prototype);
OpenParenToken.prototype.tokenType = "(";
function CloseParenToken() { this.value = ")"; this.mirror = "("; return this; }
CloseParenToken.prototype = Object.create(GroupingToken.prototype);
CloseParenToken.prototype.tokenType = ")";
function IncludeMatchToken() { return this; }
IncludeMatchToken.prototype = Object.create(CSSParserToken.prototype);
IncludeMatchToken.prototype.tokenType = "~=";
function DashMatchToken() { return this; }
DashMatchToken.prototype = Object.create(CSSParserToken.prototype);
DashMatchToken.prototype.tokenType = "|=";
function PrefixMatchToken() { return this; }
PrefixMatchToken.prototype = Object.create(CSSParserToken.prototype);
PrefixMatchToken.prototype.tokenType = "^=";
function SuffixMatchToken() { return this; }
SuffixMatchToken.prototype = Object.create(CSSParserToken.prototype);
SuffixMatchToken.prototype.tokenType = "$=";
function SubstringMatchToken() { return this; }
SubstringMatchToken.prototype = Object.create(CSSParserToken.prototype);
SubstringMatchToken.prototype.tokenType = "*=";
function ColumnToken() { return this; }
ColumnToken.prototype = Object.create(CSSParserToken.prototype);
ColumnToken.prototype.tokenType = "||";
function EOFToken() { return this; }
EOFToken.prototype = Object.create(CSSParserToken.prototype);
EOFToken.prototype.tokenType = "EOF";
EOFToken.prototype.toSource = function() { return ""; }
function DelimToken(code) {
this.value = stringFromCode(code);
return this;
}
DelimToken.prototype = Object.create(CSSParserToken.prototype);
DelimToken.prototype.tokenType = "DELIM";
DelimToken.prototype.toString = function() { return "DELIM("+this.value+")"; }
DelimToken.prototype.toJSON = function() {
var json = this.constructor.prototype.constructor.prototype.toJSON.call(this);
json.value = this.value;
return json;
}
DelimToken.prototype.toSource = function() {
if(this.value == "\\")
return "\\\n";
else
return this.value;
}
function StringValuedToken() { throw "Abstract Base Class"; }
StringValuedToken.prototype = Object.create(CSSParserToken.prototype);
StringValuedToken.prototype.ASCIIMatch = function(str) {
return this.value.toLowerCase() == str.toLowerCase();
}
StringValuedToken.prototype.toJSON = function() {
var json = this.constructor.prototype.constructor.prototype.toJSON.call(this);
json.value = this.value;
return json;
}
function IdentToken(val) {
this.value = val;
}
IdentToken.prototype = Object.create(StringValuedToken.prototype);
IdentToken.prototype.tokenType = "IDENT";
IdentToken.prototype.toString = function() { return "IDENT("+this.value+")"; }
IdentToken.prototype.toSource = function() {
return escapeIdent(this.value);
}
function FunctionToken(val) {
this.value = val;
this.mirror = ")";
}
FunctionToken.prototype = Object.create(StringValuedToken.prototype);
FunctionToken.prototype.tokenType = "FUNCTION";
FunctionToken.prototype.toString = function() { return "FUNCTION("+this.value+")"; }
FunctionToken.prototype.toSource = function() {
return escapeIdent(this.value) + "(";
}
function AtKeywordToken(val) {
this.value = val;
}
AtKeywordToken.prototype = Object.create(StringValuedToken.prototype);
AtKeywordToken.prototype.tokenType = "AT-KEYWORD";
AtKeywordToken.prototype.toString = function() { return "AT("+this.value+")"; }
AtKeywordToken.prototype.toSource = function() {
return "@" + escapeIdent(this.value);
}
function HashToken(val) {
this.value = val;
this.type = "unrestricted";
}
HashToken.prototype = Object.create(StringValuedToken.prototype);
HashToken.prototype.tokenType = "HASH";
HashToken.prototype.toString = function() { return "HASH("+this.value+")"; }
HashToken.prototype.toJSON = function() {
var json = this.constructor.prototype.constructor.prototype.toJSON.call(this);
json.value = this.value;
json.type = this.type;
return json;
}
HashToken.prototype.toSource = function() {
if(this.type == "id") {
return "#" + escapeIdent(this.value);
} else {
return "#" + escapeHash(this.value);
}
}
function StringToken(val) {
this.value = val;
}
StringToken.prototype = Object.create(StringValuedToken.prototype);
StringToken.prototype.tokenType = "STRING";
StringToken.prototype.toString = function() {
return '"' + escapeString(this.value) + '"';
}
function URLToken(val) {
this.value = val;
}
URLToken.prototype = Object.create(StringValuedToken.prototype);
URLToken.prototype.tokenType = "URL";
URLToken.prototype.toString = function() { return "URL("+this.value+")"; }
URLToken.prototype.toSource = function() {
return 'url("' + escapeString(this.value) + '")';
}
function NumberToken() {
this.value = null;
this.type = "integer";
this.repr = "";
}
NumberToken.prototype = Object.create(CSSParserToken.prototype);
NumberToken.prototype.tokenType = "NUMBER";
NumberToken.prototype.toString = function() {
if(this.type == "integer")
return "INT("+this.value+")";
return "NUMBER("+this.value+")";
}
NumberToken.prototype.toJSON = function() {
var json = this.constructor.prototype.constructor.prototype.toJSON.call(this);
json.value = this.value;
json.type = this.type;
json.repr = this.repr;
return json;
}
NumberToken.prototype.toSource = function() { return this.repr; };
function PercentageToken() {
this.value = null;
this.repr = "";
}
PercentageToken.prototype = Object.create(CSSParserToken.prototype);
PercentageToken.prototype.tokenType = "PERCENTAGE";
PercentageToken.prototype.toString = function() { return "PERCENTAGE("+this.value+")"; }
PercentageToken.prototype.toJSON = function() {
var json = this.constructor.prototype.constructor.prototype.toJSON.call(this);
json.value = this.value;
json.repr = this.repr;
return json;
}
PercentageToken.prototype.toSource = function() { return this.repr + "%"; }
function DimensionToken() {
this.value = null;
this.type = "integer";
this.repr = "";
this.unit = "";
}
DimensionToken.prototype = Object.create(CSSParserToken.prototype);
DimensionToken.prototype.tokenType = "DIMENSION";
DimensionToken.prototype.toString = function() { return "DIM("+this.value+","+this.unit+")"; }
DimensionToken.prototype.toJSON = function() {
var json = this.constructor.prototype.constructor.prototype.toJSON.call(this);
json.value = this.value;
json.type = this.type;
json.repr = this.repr;
json.unit = this.unit;
return json;
}
DimensionToken.prototype.toSource = function() {
var source = this.repr;
var unit = escapeIdent(this.unit);
if(unit[0].toLowerCase() == "e" && (unit[1] == "-" || between(unit.charCodeAt(1), 0x30, 0x39))) {
// Unit is ambiguous with scinot
// Remove the leading "e", replace with escape.
unit = "\\65 " + unit.slice(1, unit.length);
}
return source+unit;
}
function escapeIdent(string) {
string = ''+string;
var result = '';
var firstcode = string.charCodeAt(0);
for(var i = 0; i < string.length; i++) {
var code = string.charCodeAt(i);
if(code == 0x0) {
throw new InvalidCharacterError('Invalid character: the input contains U+0000.');
}
if(
between(code, 0x1, 0x1f) || code == 0x7f ||
(i == 0 && between(code, 0x30, 0x39)) ||
(i == 1 && between(code, 0x30, 0x39) && firstcode == 0x2d)
) {
result += '\\' + code.toString(16) + ' ';
} else if(
code >= 0x80 ||
code == 0x2d ||
code == 0x5f ||
between(code, 0x30, 0x39) ||
between(code, 0x41, 0x5a) ||
between(code, 0x61, 0x7a)
) {
result += string[i];
} else {
result += '\\' + string[i];
}
}
return result;
}
function escapeHash(string) {
// Escapes the contents of "unrestricted"-type hash tokens.
// Won't preserve the ID-ness of "id"-type hash tokens;
// use escapeIdent() for that.
string = ''+string;
var result = '';
var firstcode = string.charCodeAt(0);
for(var i = 0; i < string.length; i++) {
var code = string.charCodeAt(i);
if(code == 0x0) {
throw new InvalidCharacterError('Invalid character: the input contains U+0000.');
}
if(
code >= 0x80 ||
code == 0x2d ||
code == 0x5f ||
between(code, 0x30, 0x39) ||
between(code, 0x41, 0x5a) ||
between(code, 0x61, 0x7a)
) {
result += string[i];
} else {
result += '\\' + code.toString(16) + ' ';
}
}
return result;
}
function escapeString(string) {
string = ''+string;
var result = '';
for(var i = 0; i < string.length; i++) {
var code = string.charCodeAt(i);
if(code == 0x0) {
throw new InvalidCharacterError('Invalid character: the input contains U+0000.');
}
if(between(code, 0x1, 0x1f) || code == 0x7f) {
result += '\\' + code.toString(16) + ' ';
} else if(code == 0x22 || code == 0x5c) {
result += '\\' + string[i];
} else {
result += string[i];
}
}
return result;
}
// Exportation.
exports.tokenize = tokenize;
exports.IdentToken = IdentToken;
exports.FunctionToken = FunctionToken;
exports.AtKeywordToken = AtKeywordToken;
exports.HashToken = HashToken;
exports.StringToken = StringToken;
exports.BadStringToken = BadStringToken;
exports.URLToken = URLToken;
exports.BadURLToken = BadURLToken;
exports.DelimToken = DelimToken;
exports.NumberToken = NumberToken;
exports.PercentageToken = PercentageToken;
exports.DimensionToken = DimensionToken;
exports.IncludeMatchToken = IncludeMatchToken;
exports.DashMatchToken = DashMatchToken;
exports.PrefixMatchToken = PrefixMatchToken;
exports.SuffixMatchToken = SuffixMatchToken;
exports.SubstringMatchToken = SubstringMatchToken;
exports.ColumnToken = ColumnToken;
exports.WhitespaceToken = WhitespaceToken;
exports.CDOToken = CDOToken;
exports.CDCToken = CDCToken;
exports.ColonToken = ColonToken;
exports.SemicolonToken = SemicolonToken;
exports.CommaToken = CommaToken;
exports.OpenParenToken = OpenParenToken;
exports.CloseParenToken = CloseParenToken;
exports.OpenSquareToken = OpenSquareToken;
exports.CloseSquareToken = CloseSquareToken;
exports.OpenCurlyToken = OpenCurlyToken;
exports.CloseCurlyToken = CloseCurlyToken;
exports.EOFToken = EOFToken;
exports.CSSParserToken = CSSParserToken;
exports.GroupingToken = GroupingToken;
}));
