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redundant.js
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redundant.js
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/*!
This script searches for redundant rules written in the Adblock Plus syntax,
documentated here: http://adblockplus.org/en/filters, and reports them.
Author: Famlam (fam.lam [at] live.nl)
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
*/
"use strict";
var startWorker = function(data, secondTime, returnWhenDone) {
data.modifiers = data.modifiers || {};
var timeStart = Date.now(),
redundant = {},
warnings = [],
id = 0,
warningMessages = [
{id: 1, pri: "H", msg: "The selector isn't a valid CSS3 selector"},
{id: 2, pri: "H", msg: "This rule could not be parsed"},
{id: 3, pri: "H", msg: "This rule uses an old, unsupported syntax. It is broken and therefore can't be converted to the new syntax"},
{id: 4, pri: "M", msg: "Domain '{1}' is included and excluded"},
{id: 5, pri: "M", msg: "Domain '{1}' isn't a valid domain"},
{id: 6, pri: "M", msg: "Invalid lonely separator ('{1}') in the domain specifier"},
{id: 7, pri: "M", msg: "Invalid preceeding separator ('{1}') in the domain specifier"},
{id: 8, pri: "M", msg: "Invalid repeating separator ('{1}') in the domain specifier"},
{id: 9, pri: "M", msg: "Invalid trailing separator ('{1}') in the domain specifier"},
{id: 10, pri: "M", msg: "Option '{1}' can only be used with a value part"},
{id: 11, pri: "M", msg: "Option '{1}' cannot be used with a value part"},
{id: 12, pri: "M", msg: "Option '{1}' doesn't have any effect when inversed. Specify the inverse in the option value instead"},
{id: 13, pri: "M", msg: "Selector '{1}' will never match anything"},
{id: 14, pri: "M", msg: "This filter has been made redundant by '{1}' and '{2}'"},
{id: 15, pri: "M", msg: "This rule doesn't match any resource type"},
{id: 16, pri: "M", msg: "This rule doesn't match anything! '|' as first character must be followed by a valid protocol"},
{id: 17, pri: "M", msg: "This rule doesn't match anything! '||' must be followed by a valid domain"},
{id: 19, pri: "M", msg: "Unknown option '{1}'"},
{id: 20, pri: "M", msg: "Option '{1}' exists multiple times. Specify the option once and use a pipe ('|') to separate the values instead"},
{id: 21, pri: "M", msg: "Probably '{1}' was used instead of ',' to separate options"},
{id: 18, pri: "M", msg: "Probably option '{1}' is desired instead of '{2}'"},
{id: 22, pri: "M", msg: "This is likely a broken hiding rule. Hiding rules may not contain { or }"},
{id: 23, pri: "M", msg: "This is likely a hiding rule with a broken domain or an exclusion rule for a hiding rule. Their syntax is 'domain#@#rule'"},
{id: 24, pri: "M", msg: "This is likely an exclusion rule for a hiding rule. Their syntax is 'domain#@#rule'"},
{id: 25, pri: "M", msg: "This is very likely a hiding rule with a broken domain"},
{id: 26, pri: "M", msg: "This is very likely a rule with broken options"},
{id: 27, pri: "M", msg: "Both '{1}' and '~{1}' are used in the same rule"},
{id: 28, pri: "M", msg: "Option '{1}' does no longer exist"},
{id: 29, pri: "M", msg: "They are at least partially redundant"},
{id: 30, pri: "M", msg: "This rule uses an old, unsupported syntax. Replace it by {1}"},
{id: 31, pri: "M", msg: "The following domain of '{1}' can be removed: {2}"},
{id: 32, pri: "M", msg: "The following domains of '{1}' can be removed: {2}"},
{id: 33, pri: "M", msg: "They are redundant at almost every domain. Consider applying '{1}' to these domains only: {2}"},
{id: 34, pri: "M", msg: "They are redundant at almost every domain. Consider applying '{1}' to this domain only: {2}"},
{id: 35, pri: "M", msg: "They are redundant for at least domain '{1}'"},
{id: 64, pri: "M", msg: "They are redundant for at least domain '{1}' if you neglect the domain variant '{2}'"},
{id: 65, pri: "M", msg: "They are redundant for domain '{1}' if you neglect the domain variant '{2}'"},
{id: 36, pri: "M", msg: "This filter has possibly been made redundant by the regex '{1}'"},
{id: 37, pri: "M", msg: "This filter has possibly been made redundant by the regex '{1}' on domain '{2}'"},
{id: 38, pri: "M", msg: "Option '{1}' only works on whitelist rules"},
{id: 39, pri: "M", msg: "Excluded domain '{1}' doesn't have any effect"},
{id: 66, pri: "M", msg: "Option '{1}' cancels the effect of option '{2}'"},
{id: 40, pri: "M", msg: "Option '{1}' doesn't have any effect"},
{id: 41, pri: "M", msg: "Option '{1}' doesn't have any effect when inversed"},
{id: 42, pri: "M", msg: "Option '{1}' doesn't have any effect, except for the first time it is used"},
{id: 43, pri: "M", msg: "Option '{1}' has no effect on whitelisting rules"},
{id: 44, pri: "M", msg: "Option '{1}' is deprecated. Use '{2}' instead"},
{id: 45, pri: "M", msg: "Selector '{1}' matches everything and should thus be removed"},
{id: 46, pri: "M", msg: "Selector '{1}' matches everything and should thus be replaced by the universal selector (*)"},
{id: 47, pri: "M", msg: "Domain '{1}' exists multiple times"},
{id: 48, pri: "M", msg: "Excluded domain '{1}' exists multiple times"},
{id: 49, pri: "M", msg: "Option '{1}' exists multiple times"},
{id: 50, pri: "M", msg: "Rule '{1}' has been made redundant by '{2}'"},
{id: 51, pri: "M", msg: "Selector '{1}' has been made redundant by '{2}'"},
{id: 52, pri: "M", msg: "Some excluded subdomains of '{1}' are redundant"},
{id: 53, pri: "M", msg: "Some subdomains of '{1}' are redundant"},
{id: 54, pri: "L", msg: "Consider replacing '{1}' by '{2}' because it's faster"},
{id: 55, pri: "L", msg: "Unnecessary '{1}' found at the end of the filter"},
{id: 56, pri: "L", msg: "Unnecessary '{1}' found at the start of the filter"},
{id: 57, pri: "L", msg: "Unnecessary regular expression. Use '{1}' instead, or use '{2}' if it isn't a regex"},
{id: 58, pri: "L", msg: "Unnecessary universal selector (*) found before '{1}'"},
{id: 59, pri: "L", msg: "Unnecessary preceding wildcard found"},
{id: 60, pri: "L", msg: "Unnecessary successive wildcards found"},
{id: 61, pri: "L", msg: "Unnecessary trailing dot found for domain '{1}'"},
{id: 62, pri: "L", msg: "Unnecessary trailing wildcard found"},
{id: 63, pri: "L", msg: "Unnecessary whitespace character(s) found"}
],// largest existing id = 66, higher in the list means higher priority
// Regexes
// Hiding rule identifier:
// \-?(?:[_a-z]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])(?:[\-_a-z0-9]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])*
ELEMHIDE = /^([^\/\*\|\@\"\!]*?)\#\??\s*(\@)?\s*\#([^\{\}]+)$/, /**/
PROBABLYELEMHIDE = /^.*?[^\$]\#\s*\@*\s*\#[\#\.\w\[].+/,
BLOCKING = /^(@@)?(.*?)(\$~?[\w\-]+(?:=[^,\s]+)?(?:,~?[\w\-]+(?:=[^,\s]+)?)*)?$/, /**/
PROBABLYOPTIONS = /\$,*~?[\w\-_]+(?:=[^,\s]*)?(?:,+~?[\w\-_]+(?:=[^,\s]*)?)*,*$/,
B_REGEX = /^\/.+\/$/, /**/
PROBABLYNOTREGEX = /^\/[^\\\.\*\{\}\+\?\^\$\[\]\(\)\|<\>\#]+\/$/,
B_DOMAINIS = /(?:\,|\$|^)domain\=([^\,]+)/i, /**/
WHITESPACE_G = /\s+/g, /**/
WHITESPACE = /\s+/,
H_IDENTIFIER = /\-?(?:[_a-z]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])(?:[\-_a-z0-9]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])*/gi,
H_IDENTIFIERSTART = /^\-?(?:[_a-z]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])(?:[\-_a-z0-9]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])*/i,
H_IDENTIFIERENDSPACE = /^\-?(?:[_a-z]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])(?:[\-_a-z0-9]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])*\s$/i,
ESCAPEDSTAR_G = /\\\*/g,
ESCAPEDROOFTOP_G = /\\\^/g,
ESCAPEDROOFTOPSTART = /^(?:\\\|)?\\\^/,
ESCAPEDROOFTOPEND = /(?:\\\^)+\\\|$/,
B_TRIPLEROOFTOP_G = /\|\^\^\^\)/g,
B_USELESSWILDCARD_G = /^\.\*|\.\*$/g,
B_USELESSSTAR_G = /^\*|\*$/g, /**/
ESCAPECHAR_G = /\W/g,
SUBDOMAIN = /^.+?(?:\.|$)/, /**/
ONEESCAPEDPIPE = /^\\\|/,
TWOESCAPEDPIPES = /^\\\|\\\|/,
MANYSTARS_G = /\*{2,}/g, /**/
TILDESTART = /^\~/,
ESCAPEDPIPEFINAL = /\\\|$/,
DASH_G = /\-/g,
CURLYBRACKETS = /\{|\}/,
DOTEND = /\.$/, /**/
COMMAEND = /\,$/,
H_PROBABLYELEMHIDEEXCLUDE = /^(?:\@\@[^\#\@]*\#\@{0,2}|[^\#\@]*\#\@\@|[^\#\@]*\@\@?\#\@?)\#.+/,
B_BADFILTERSTART = /^\|\|[^a-z0-9_\-\.\~\%\!\$\&\'\(\)\+\,\;\=\:\@\[\*\u00DF-\u00F6\u00F8-\uFFFFFF]/i,
B_BADPROTOCOLSTART = /^\|([^a-z]|[a-z0-9\+\-\.]*[^a-z0-9\+\-\.\:\^\*])/i,
B_USELESSFILTERSTART = /^\|\*/, /**/
B_USELESSFILTEREND = /(?:\*+|^)(?:\^+\|?|\|)$/, /**/
H_BROWSERPSEUDOSELECTOR = /^\:?\-[a-z]+\-.+/,
OLDSTYLEHIDING = /^[^\/\*\|\@\"\!]*?\#(?:[\w\-]+|\*)(?:\([\w\-]+(?:[\$\^\*]?=[^\(\)\"]*)?\))*$/,
COMMENTLINE = /^\s*(?:\!|.*\[Adblock.*\]|\s+$)/i, /**/
B_STARTWILDCARDPIPE_G = /^(?:\*|\.?\*\\)\|/g, /**/
B_ENDWILDCARDPIPE_G = /\|\.?\*$/g, /**/
H_ATTRSELECTORNOVALUE = /^\[\s*(\-?(?:[_a-z]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])(?:[\-_a-z0-9]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])*\||\*\||\|)?(\-?(?:[_a-z]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])(?:[\-_a-z0-9]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])*)\s*\]$/i,
H_ATTRDOUBLEQUOTESSELECTOR = /^\[\s*(\-?(?:[_a-z]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])(?:[\-_a-z0-9]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])*\||\*\||\|)?(\-?(?:[_a-z]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])(?:[\-_a-z0-9]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])*)\s*((\~|\^|\$|\*|\|)?\=\s*\"((?:\\.|[^\"\\])*?)\")\s*\]$/i,
H_ATTRSINGLEQUOTESSELECTOR = /^\[\s*(\-?(?:[_a-z]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])(?:[\-_a-z0-9]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])*\||\*\||\|)?(\-?(?:[_a-z]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])(?:[\-_a-z0-9]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])*)\s*((\~|\^|\$|\*|\|)?\=\s*\'((?:\\.|[^\'\\])*?)\')\s*\]$/i,
H_ATTRNOQUOTESSELECTOR = /^\[\s*(\-?(?:[_a-z]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])(?:[\-_a-z0-9]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])*\||\*\||\|)?(\-?(?:[_a-z]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])(?:[\-_a-z0-9]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])*)\s*((\~|\^|\$|\*|\|)?\=\s*(\-?(?:[_a-z]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])(?:[\-_a-z0-9]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])*))\s*\]$/i,
H_ATTRIDSELECTOR = /^\[id\=\'\-?(?:[_a-z]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])(?:[\-_a-z0-9]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])*\'\]$/i,
H_ATTRCLASSSELECTOR = /^\[class\~?\=\'\-?(?:[_a-z]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])(?:[\-_a-z0-9]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])*(?:\s+\-?(?:[_a-z]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])(?:[\-_a-z0-9]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])*)*\'\]$/i,
H_PSEUDOCLASSSELECTOR = /^\:(\:?\-?(?:[_a-z]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])(?:[\-_a-z0-9]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])*)(?:\((.+)\))?$/i,
H_LOOSEATTRIBUTEVALUESELECTOR = /^\[(\-?(?:[_a-z]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])(?:[\-_a-z0-9]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])*\||\*\||\|)?(\-?(?:[_a-z]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])(?:[\-_a-z0-9]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])*)((\~|\^|\$|\*|\|)?\=\'((?:\\.|[^\\])*?)\')\]$/i,
H_IDSELECTOR = /^\#\-?(?:[_a-z]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])(?:[\-_a-z0-9]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])*$/i,
H_CLASSSELECTOR = /^\.\-?(?:[_a-z]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])(?:[\-_a-z0-9]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])*$/i,
H_NODENAMESELECTOR = /^((?:\-?(?:[_a-z]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])(?:[\-_a-z0-9]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])*|\*)?\|)?((?:\*|\-?(?:[_a-z]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])(?:[\-_a-z0-9]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])*))$/i, /**/
H_TREESELECTORCOMMASTART = /^\s*[\>\~\+\s\,]\s*/,
H_TREESELECTORCOMMA = /^\s*[\>\~\+\s\,]\s*$/,
H_NTHPSEUDOCONTENT = /^\s*((\-|\+)?\d*n(\s*(\-|\+)?\s*\d+)?|(\-|\+)?\d+|odd|even)\s*$/i,
H_LANGPSEUDOCONTENT = /^\s*\-?(?:[_a-z]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])(?:[\-_a-z0-9]|[^\u0000-\u009F]|\\[0-9a-f]{1,6}\s?|\\[^0-9a-f])*\s*$/i,
H_LANGPSEUDOCONTENTSPLITTER_G = /(?:^|\-)(?:\\.|[^\\\-])+/g,
VALIDDOMAIN = /^\~?((?:[a-z0-9\-_\u00DF-\u00F6\u00F8-\uFFFFFF]+|xn\-\-[a-z0-9\-_\u00DF-\u00F6\u00F8-\u00FF]+)\.)*(?:[a-z0-9\u00DF-\u00F6\u00F8-\uFFFFFF]+|xn\-\-[a-z0-9\-_\u00DF-\u00F6\u00F8-\u00FF]+)\.?$/i,
H_OLDSTYLEIDCLASS = /\(([^\=]+?)\)/,
H_OLDSTYLEATTRIBUTE_G = /\(([^\)\=]+?\=)([^\)]+?)\)/g,
B_OPTIONVALUE = /\=.+$/,
BACKSLASHEND = /\\+$/,
B_MATCHEVERYTHING = /^(?:\|\||\:|\||\|\*\:|\^|\|\*\^)?(?:\*\/|\*\^|\*\|)?$/,
B_HATSTAR_G = /\^|\*/g,
STAR_G = /\*/g,
AT_G = /\@/g,
WARNINGINSERTS = /\{(\d)\}/g,
B_ROOFTOPCHARACTERS = /[^\-\.\%a-zA-Z0-9_\|\*\u0080-\uFFFFFF\^]/, // excluding ^ itself
B_KEYCHARACTERS = /[\%a-z0-9\u0080-\uFFFFFF]/,
// The blocking options
knownOptions = [
"third_party",
"match_case",
"collapse",
"domain",
"sitekey",
"3p",
"redirect_rule",
],
deprecated = {
background: "image",
dtd: "other",
ping: "other",
xbl: "other",
donottrack: ""
},
Types = {ALL: 0};
[
"document",
"webrtc",
"websocket",
"csp",
"rewrite",
"redirect_rule",
"elemhide",
"font",
"genericblock",
"generichide",
"image",
"background",
"media",
"object",
"object_subrequest",
"other",
"dtd",
"ping",
"xbl",
"popup",
"script",
"stylesheet",
"subdocument",
"xmlhttprequest"
].forEach(function(val) {
if (deprecated.hasOwnProperty(val)) {
Types[val] = Types[deprecated[val]]; // requires deprecated items after replacement items
} else {
Types[val] = Types.ALL + 1;
Types.MAX = Types.ALL + 1;
Types.ALL = Types.MAX * 2 - 1;
}
});
var hasValueOptions = ["domain", "sitekey", "csp", "rewrite", "redirect_rule"];
var status = {
OK: 1,
INVALID: 2,
IGNORE: 4,
DISCARD: 8
},
syntax = {
hiding: 1,
blocking: 2
},
// Objects containing the individual filters
h_global = [],
h_siteSpecific = [],
h_siteCollection = {},
b_siteCollection = {},
b_withoutkey = [],
b_withkey = [],
b_keyCollection = {},
// Reporting the progress
currentChecks = 0,
maxChecks = 0,
nextReport = 0,
reportProgress = function(n) {
if (secondTime) {
return;
}
currentChecks += n;
nextReport -= n;
if (nextReport < 1) {
nextReport = maxChecks / 200;
self.postMessage({progress: Math.round(currentChecks / nextReport) / 2});
}
};
String.prototype.trimLeft = String.prototype.trimLeft || function() { // non-standard function
return this.replace(/^\s+/, "");
};
String.prototype.trimRight = String.prototype.trimRight || function() { // non-standard function
return this.replace(/\s+$/, "");
};
String.prototype.trim = function() {
// I don't want to trim 'foo\ ' to 'foo\'
var diff,
match = this.trimRight().match(BACKSLASHEND);
if (!match || match[0].length%2 === 0) {
return this.trimRight().trimLeft();
}
diff = this.length - this.trimRight().length;
if (diff > 1) {
return this.substring(0, this.length - diff + 1).trimLeft();
}
return this.trimLeft();
};
Array.prototype.contains = function(obj) {
return this.indexOf(obj) !== -1;
};
String.prototype.contains = String.prototype.contains || Array.prototype.contains; // part of ES6
String.prototype.startsWith = String.prototype.startsWith || function(obj) { // part of ES6
return this.indexOf(obj) === 0;
};
String.prototype.endsWith = String.prototype.endsWith || function(obj) { // part of ES6
var position = this.length - obj.length;
return position > -1 && this.substring(position) === obj;
};
Array.prototype.clone = function() {
return this.slice(0);
};
Array.prototype.unique = function() {
var i,
l = this.length,
arr = [];
for (i=0; i<l; i++) {
if (this.indexOf(this[i], i+1) === -1) {
arr.push(this[i]);
}
}
return arr;
};
Array.prototype.removeAt = function(index) {
if (index < 0) {
return [];
}
return this.splice(index, 1);
};
var isObjectProperty = function(str) {
return ({})[str] !== undefined;
};
startWorker.isEmptyObject = function(obj) {
var i;
for (i in obj) {
return false;
}
return true;
};
var isInaccurateNumber = function(nr) {
return Math.abs(nr) > Math.pow(2, 53); // IEEE 754
};
// Remove exact duplicates and comments
var getLinesWithoutDuplicates = function() {
// Inputs:
// nothing
// Returns:
// array of strings
var i, line,
linesObj = {},
lines = data.filters.split("\n");
for (i=lines.length-1; i>=0; i--) {
line = lines[i];
if (!line || COMMENTLINE.test(line) || isObjectProperty(line)) {
lines.removeAt(i);
} else if (linesObj.hasOwnProperty(line)) {
redundant[line] = line;
lines.removeAt(i);
} else {
linesObj[line] = true; // Object.hasOwnProperty is faster than Array.contains()
}
}
return lines;
};
var getWarningIndex = function(warningID) {
// Inputs:
// warningID: number
// Returns:
// number
var i;
for (i=0; i<warningMessages.length; i++) {
if (warningID === warningMessages[i].id) {
return i;
}
}
};
var warn = function(warningID, rules, arg) {
// Inputs:
// warningID: number
// rules: string or array of strings
// arg: string or array of strings
// Returns:
// nothing
if (typeof rules === "string") {
rules = [rules];
}
if (typeof arg !== "object") {
arg = [arg];
}
var index = getWarningIndex(warningID);
warnings.push({
rules: rules.sort(),
index: index,
priority: warningMessages[index].pri,
msg: warningMessages[index].msg.replace(WARNINGINSERTS, function(m0, m1) {
return arg[Number(m1)-1];
})
});
};
var getWarningPriority = function(rules) {
// Inputs:
// rules: string
// Returns:
// number
var i,
res = Infinity;
for (i=0; i<warnings.length; i++) {
if (rules === warnings[i].rules.join("\n")) {
res = Math.min(res, warnings[i].index);
}
}
return res;
};
var bestReplacement = function(redundantRule, rule) {
// Inputs:
// redundantRule: parsed rule object
// rule: parsed rule object
// Returns:
// nothing
var both = {},
current = redundant[redundantRule.filter];
if (!current || current === rule.filter) {
if (redundantRule.shim) {
warn(29, [redundantRule.filter, rule.filter]);
} else {
redundant[redundantRule.filter] = rule.filter;
}
} else if (data.modifiers.matchWhitelist) {
redundant[redundantRule.filter] += "\n" + rule.filter;
} else {
if (!secondTime) {
both = startWorker({filters: rule.filter + "\n" + current, modifiers: data.modifiers}, true);
}
if (both[current] === rule.filter) {
redundant[redundantRule.filter] = rule.filter;
} else if (both[rule.filter] !== current) {
if (rule.filter.length < current.length || (rule.filter.length === current.length && rule.filter < current)) {
redundant[redundantRule.filter] = rule.filter;
}
}
}
};
// ======================================================================== //
// Removes included and excluded domains that are specified, but redundant in the own rule
// Detects invalid domains
// ======================================================================== //
var checkForBrokenDomains = function(domains, line, options) {
// Inputs:
// domains: array of strings
// line: string
// options: object with keys
// ignoreBroken: boolean
// syntax: syntax
// isExclude: boolean
// excludeOverride: array of strings
// Returns:
// object with keys:
// include: array of strings
// exclude: array of strings
// status: status
var i, j, siteParts, isSubdomain, hasCorrectInclude, excludedCheck,
excluded=options.excludeOverride || [],
included=[],
domainInfo = [];
for (i=0; i<domains.length; i++) {
domainInfo.push({
original: domains[i],
parsed: domains[i].replace(WHITESPACE_G, "").toLowerCase()
});
// Unicode 00DF-00F6 and 00F8-00FF are characters with diacritic signs, etcetera...
// Unicode 0430-044F are Cyrillic characters, 0621-063F and 0641-064A are Arabic, 0E01-0E3A and 0E40-0E5B are Thai,
// 4E00-9FFF are chinese/CJK, etcetera... too much
if (!options.ignoreBroken && !VALIDDOMAIN.test(domainInfo[i].parsed)) {
if (domainInfo[i].parsed === "") {
if (i === 0 && domains.join("").replace(WHITESPACE_G, "") === "") {
warn(6, line, options.syntax === syntax.hiding ? "," : "|");
} else if (i === 0) {
warn(7, line, options.syntax === syntax.hiding ? "," : "|");
} else if (i === domains.length - 1) {
warn(9, line, options.syntax === syntax.hiding ? "," : "|");
} else {
warn(8, line, options.syntax === syntax.hiding ? "," : "|");
}
} else {
warn(5, line, domainInfo[i].original);
}
return {status: status.INVALID};
}
if (options.syntax === syntax.blocking && DOTEND.test(domainInfo[i].parsed)) {
domainInfo[i].parsed = domainInfo[i].parsed.replace(DOTEND, "");
if (!options.ignoreBroken) {
warn(61, line, domainInfo[i].original);
}
}
if (domainInfo[i].parsed[0] === "~") {
excluded.push(domainInfo[i].parsed.substring(1));
} else {
included.push(domainInfo[i].parsed);
}
}
for (i=included.length-1; i>=0; i--) {
siteParts = included[i];
isSubdomain=false;
while (SUBDOMAIN.test(siteParts)) {
if (excluded.contains(siteParts)) {
break;
}
if (!options.ignoreBroken && isObjectProperty(siteParts)) {
return {status: status.IGNORE};
}
if (isSubdomain && included.contains(siteParts)) {
if (!options.ignoreBroken) {
if (options.isExclude) {
warn(52, line, siteParts);
} else {
warn(53, line, siteParts);
}
}
included.removeAt(i);
} else if (!isSubdomain && included.indexOf(siteParts) !== included.lastIndexOf(siteParts)) {
if (!options.ignoreBroken) {
if (options.isExclude) {
warn(48, line, siteParts);
} else {
warn(47, line, siteParts);
}
}
included.removeAt(i);
}
siteParts = siteParts.replace(SUBDOMAIN, "");
isSubdomain = true;
}
}
if (excluded.length && !options.isExclude) {
excludedCheck = checkForBrokenDomains(excluded, line, {ignoreBroken: options.ignoreBroken, syntax: options.syntax,
isExclude: true, excludeOverride: included});
if (excludedCheck.status !== status.OK) {
return {status: excludedCheck.status};
}
excluded = excludedCheck.include;
if (included.length) {
for (j=excluded.length-1; j>=0; j--) {
hasCorrectInclude = false;
siteParts = excluded[j];
while (SUBDOMAIN.test(siteParts)) {
if (included.contains(siteParts)) {
if (siteParts === excluded[j]) {
warn(4, line, siteParts);
return {status: status.IGNORE};
}
hasCorrectInclude = true;
break;
}
siteParts = siteParts.replace(SUBDOMAIN, "");
}
if (!hasCorrectInclude) {
if (!options.ignoreBroken) {
warn(39, line, excluded[j]);
}
excluded.removeAt(j);
}
}
}
return {include: included, exclude: excluded, status: status.OK};
}
return {include: included, exclude: [], status: status.OK};
};
startWorker.parseCSSSelector = function(selector) {
// Inputs:
// selector: string
// Returns:
// array of array of array of strings
var current, match,
stringChar = "",
selectorIndex = 0,
bracketCount = 0,
bracketChar = "",
selectorParts = [],
depths = [],
selectors = [],
endOfSelectorPart = function() {
if (selectorIndex) {
selectorParts.push(selector.substring(0, selectorIndex));
selector = selector.substring(selectorIndex);
selectorIndex = 0;
}
},
endOfDepth = function() {
endOfSelectorPart();
depths.unshift(selectorParts);
selectorParts = [];
},
endOfSelector = function() {
endOfDepth();
selector = selector.trim();
selectors.push(depths);
depths = [];
};
selector = selector.trim();
while (selector) {
if (selector.length <= selectorIndex) {
break;
}
current = selector[selectorIndex].replace(WHITESPACE, " ");
// Strings between "" and ''
if (stringChar) {
switch (current) {
case stringChar: {
stringChar = "";
break;
}
case "\\": {
selectorIndex++;
break;
}
}
selectorIndex++;
continue;
}
// Content inside () and []; beginnings of strings
switch (current) {
case "'": case "\"": {
stringChar = current;
selectorIndex++;
continue;
}
case "(": case "[": {
if (bracketChar && bracketChar === current) {
bracketCount++;
} else if (!bracketChar) {
if (current === "[") {
endOfSelectorPart();
}
bracketCount = 1;
bracketChar = current;
}
selectorIndex++;
continue;
}
case ")": case "]": {
if ((bracketChar === "(" && current === ")") || (bracketChar === "[" && current === "]")) {
bracketCount--;
if (bracketCount === 0) {
bracketChar = "";
}
}
selectorIndex++;
continue;
}
default: {
if (bracketChar) {
selectorIndex++;
continue;
}
}
}
// CSS identifiers
match = selector.substring(selectorIndex).match(H_IDENTIFIERSTART);
if (!match && current === "*") {
match = ["*"];
}
if (match) {
selectorIndex += match[0].length;
if (WHITESPACE.test(match[0][match[0].length-1]) && H_IDENTIFIERENDSPACE.test(match[0])) {
selector = selector.substring(0, selectorIndex-1) + selector.substring(selectorIndex);
selectorIndex -= 1;
}
if (selector[selectorIndex] !== "(" && selector[selectorIndex] !== "|") {
endOfSelectorPart();
}
continue;
}
// ids, classes, pseudoclasses, pseudoselectors, treeselectors, combinators
switch (current) {
case "#": case ".": case ":": {
endOfSelectorPart();
if (current === ":" && selector[selectorIndex+1] === ":") {
selectorIndex++;
}
selectorIndex++;
continue;
}
case " ": case ">": case "+": case "~": case ",": {
endOfSelectorPart();
match = selector.match(H_TREESELECTORCOMMASTART);
selectorIndex += match[0].length;
if (match[0].trim() === ",") {
endOfSelector();
} else {
endOfDepth();
}
continue;
}
}
selectorIndex++;
}
endOfSelector();
return selectors;
};
// ======================================================================== //
// Searches for errors in the hiding rule.
// Parses the hiding rule into individual selectors
// ======================================================================== //
var generalizeCSSSelector = function(rule, is_notpseudoselector_content, line, noChangeSuggestions) {
// Inputs:
// rule: array of array of objects|strings
// is_notpseudoselector_content: boolean
// line: string
// noChangeSuggestions: boolean
// Returns:
// object {value: [[Array] or String], status: [status]}
var i, j, depth, current, match, next, hasNodeName, currentDepth, constValue, nValue, workerResults,
isGoodNotSelector, nSplit, otherSelector, bracketIndexI, lastPlusIndexI, redundantSelector, ruleSelector,
redundantParsed, ruleParsed, mutuallyRedundant, converted,
result = [],
indepthRedundancyFilter = function(item) {
return item !== "*" && item !== ">" && item !== "+" && item !== " " && item !== "~";
};
if (is_notpseudoselector_content && rule.length !== 1) {
return {status: status.INVALID};
}
for (depth=0; depth<rule.length; depth++) {
currentDepth = rule[depth].clone();
if (currentDepth.length === 0) {
return {status: status.INVALID};
}
if (is_notpseudoselector_content && currentDepth.length > 1) {
return {status: status.INVALID};
}
result[depth] = [];
// Check the individual items
for (i=0; i<currentDepth.length; i++) {
current = currentDepth[i];
if (H_TREESELECTORCOMMA.test(current)) {
current = current.trim() || " ";
}
next = currentDepth[i+1];
switch (current[0]) {
case "#": {
match = current.match(H_IDSELECTOR);
if (match) {
result[depth].push("[id='" + current.substring(1) + "']");
break;
}
return {status: status.INVALID};
}
case ".": {
match = current.match(H_CLASSSELECTOR);
if (match) {
result[depth].push("[class~='" + current.substring(1) + "']");
break;
}
return {status: status.INVALID};
}
case "[": {
match = current.match(H_ATTRSELECTORNOVALUE);
if (match) {
match[1] = (!match[1] || match[1] === "|") ? "" : match[1].toLowerCase(); // namespace
match[2] = match[2].toLowerCase(); // attr
result[depth].push("[" + match[1] + match[2] + "]");
break;
}
match = current.match(H_ATTRDOUBLEQUOTESSELECTOR) || current.match(H_ATTRSINGLEQUOTESSELECTOR) || current.match(H_ATTRNOQUOTESSELECTOR);
if (match) {
match[1] = (!match[1] || match[1] === "|") ? "" : match[1].toLowerCase(); // namespace
match[2] = match[2].toLowerCase(); // attr
match[3] = (match[4] || "") + "='" + match[5] + "'"; // operator+value
result[depth].push("[" + match[1] + match[2] + match[3] + "]");
if (match[4] === "~" && WHITESPACE.test(match[5].replace(H_IDENTIFIER, ""))) {
return {status: status.DISCARD, value: current};
}
if (match[2] === "id" && H_ATTRIDSELECTOR.test("[" + match[2] + match[3] + "]")) {
if (line && !noChangeSuggestions) {
warn(54, line, [current, "#" + match[5]]);
}
} else if (H_ATTRCLASSSELECTOR.test("[" + match[2] + match[3] + "]")) {
if (line && !noChangeSuggestions && match[4] === "~") {
warn(54, line, [current, "." + match[5]]);
}
}
break;
}
return {status: status.INVALID};
}
case ":": {
match = current.match(H_PSEUDOCLASSSELECTOR);
if (match) {
match[1] = match[1].toLowerCase();
switch (match[1]) {
case "not": {
if (is_notpseudoselector_content || !match[2] || !match[2].trim()) {
return {status: status.INVALID};
}
isGoodNotSelector = prepareHidingRule(match[2], true, line, noChangeSuggestions);
if (isGoodNotSelector.status === status.OK) {
result[depth].push(":not(" + JSON.stringify(isGoodNotSelector.rules[0][0]) + ")");
break;
}
if (isGoodNotSelector.status === status.DISCARD) {
if (line && !noChangeSuggestions) {
if (i > 0 || (next && !H_TREESELECTORCOMMA.test(next))) {
warn(45, line, current);
} else {
warn(46, line, current);
}
}
break;
}
if (isGoodNotSelector.status === status.IGNORE) {
return {status: status.IGNORE};
}
return {status: status.INVALID};
}
case "nth-of-type": case "nth-last-of-type": case "nth-child": case "nth-last-child": {
if (!match[2] || !H_NTHPSEUDOCONTENT.test(match[2])) {
return {status: status.INVALID};
}
match[2] = match[2].replace(WHITESPACE_G, "").toLowerCase();
if (match[2] === "odd") {
match[2] = "2n+1";
} else if (match[2] === "even") {
match[2] = "2n";
}
nSplit = match[2].split("n");
nValue = 0;
constValue = 0;
if (nSplit.length === 1) {
constValue = Number(match[2]);
} else {
if (nSplit[1]) {
constValue = Number(nSplit[1]);
}
if (!nSplit[0] || nSplit[0] === "+" || nSplit[0] === "-") {
nValue = Number(nSplit[0] + "1");
} else {
nValue = Number(nSplit[0]);
}
}
if (isInaccurateNumber(nValue) || isInaccurateNumber(constValue)) {
return {status: status.IGNORE};
}
nValue = Number(nValue);
constValue = Number(constValue);
if (nValue > 0 && constValue <= 0) {
while (constValue <= 0) {
constValue += nValue;
}
} else if (nValue < 0 && constValue > 0 && constValue + nValue <= 0) {
nValue = 0;
} else if (nValue <= 0 && constValue <= 0) {
return {status: status.DISCARD, value: current};
}
result[depth].push(":" + match[1] + "(" + nValue + "n+" + constValue + ")");
break;
}
case "lang": {
if (!match[2] || !H_LANGPSEUDOCONTENT.test(match[2])) {
return {status: status.INVALID};
}
match = match[2].trim().toLowerCase().match(H_LANGPSEUDOCONTENTSPLITTER_G);
for (j=0; j<match.length; j++) {
result[depth].push(":lang(" + match[0] + ")");
match[0] += match[j+1];
}
break;
}
case ":first-line": case ":first-letter": case ":before": case ":after": // CSS3 pseudo-elements
case ":value": case ":choices": case ":repeat-item": case ":repeat-index": // CSS3UI "at risk": may be dropped
case "after": case "before": case "first-letter": case "first-line": case ":selection": {// Unofficial
if (is_notpseudoselector_content || match[2] || (next && !H_TREESELECTORCOMMA.test(next))) {
return {status: status.INVALID};
}
return {status: status.DISCARD, value: current};
}
case "first-child": case "last-child": case "first-of-type": case "last-of-type": {
if (match[2]) {
return {status: status.INVALID};
}
result[depth].push(":nth-" + match[1].replace("first-", "") + "(0n+1)");
break;
}
case "only-child": case "only-of-type": {
if (match[2]) {
return {status: status.INVALID};
}
result[depth].push(":" + match[1].replace("only", "nth") + "(0n+1)",
":" + match[1].replace("only", "nth-last") + "(0n+1)");
break;
}
case "empty": case "root": case "active": case "hover": case "focus": // CSS3
case "target": case "enabled": case "disabled": case "checked": case "visited": case "link": // CSS3 http://www.w3.org/TR/selectors/
case "indeterminate": case "default": case "valid": case "invalid": case "in-range": // CSS3UI
case "out-of-range": case "required": case "optional": case "read-only": case "read-write": {// CSS3UI http://www.w3.org/TR/css3-ui/
if (match[2]) {
return {status: status.INVALID};
}
result[depth].push(":" + match[1]);
break;
}
case "remove-attr": case "style": case 'has':
if (!match[2]) {
return {status: status.INVALID};
}
result[depth].push(match[2]);
break;
default: {
if (!H_BROWSERPSEUDOSELECTOR.test(match[1])) {
return {status: status.INVALID};
}
result[depth].push(":" + match[1] + (match[2] ? "(" + match[2] + ")" : ""));
}
}
break;
}
return {status: status.INVALID};
}
case " ": case ">": case "~": case "+": {
if (i !== 0) {
result[depth].push(current);
break;
}
return {status: status.INVALID};
}
case ",": {
if (i !== 0) {
break;
}
return {status: status.INVALID};
}
case "j": {
match = current.match(/js\(([\w-]+)\,\s(.+)(\,\s(.+))?\)$/);
if (match) {
return {status: status.IGNORE};
}
}
default: {
match = current.match(H_NODENAMESELECTOR);
if (match && i === 0) {
hasNodeName = true;
if (current === "*|*") {
break;
}
if (current === "*" && !noChangeSuggestions && line && next && !H_TREESELECTORCOMMA.test(next)) {
warn(58, line, next);
}
if (!match[1]) {
result[depth].push(match[2].toLowerCase());
result[depth].push("*|" + match[2].toLowerCase());
if (match[2] !== "*") {
result[depth].push("*");
}
} else {
result[depth].push(current.toLowerCase());
if (match[2] !== "*") {
result[depth].push(match[1].toLowerCase() + "*");
}
if (match[1] !== "*|") {
result[depth].push("*|" + match[2].toLowerCase());
}
}
break;
}
return {status: status.INVALID};
}
}
}
if (!hasNodeName) {
result[depth].push("*");
} else {
hasNodeName = false;
}
currentDepth.removeAt(currentDepth.indexOf("*|*"));
result[depth].removeAt(result[depth].indexOf("*|*"));
// Check if :not(...) selectors make matching impossible
if (!secondTime) {
for (i=0; i<currentDepth.length; i++) {
if (currentDepth[i].toLowerCase().startsWith(":not(")) {
for (j=0; j<currentDepth.length; j++) {
if (i === j) {
otherSelector = "##*|* *|*";
} else if (currentDepth[j].toLowerCase().startsWith(":not(")) {
continue;
} else {
otherSelector = "##*|* " + currentDepth[j];
}
workerResults = startWorker({filters: "##" + currentDepth[i].substring(5, currentDepth[i].length-1) + "\n" + otherSelector}, true);
if (workerResults.hasOwnProperty(otherSelector)) {