+++ /dev/null
-/* normalize-selector v0.1.0 (c) 2014 Kyle Simpson */
-
-(function UMD(name,context,definition){
- if (typeof module !== "undefined" && module.exports) { module.exports = definition(); }
- else if (typeof define === "function" && define.amd) { define(definition); }
- else { context[name] = definition(name,context); }
-})("normalizeSelector",this,function DEF(name,context){
- "use strict";
-
- function normalizeSelector(sel) {
-
- // save unmatched text, if any
- function saveUnmatched() {
- if (unmatched) {
- // whitespace needed after combinator?
- if (tokens.length > 0 &&
- /^[~+>]$/.test(tokens[tokens.length-1])
- ) {
- tokens.push(" ");
- }
-
- // save unmatched text
- tokens.push(unmatched);
- }
- }
-
- var tokens = [], match, unmatched, regex, state = [0],
- next_match_idx = 0, prev_match_idx,
- not_escaped_pattern = /(?:[^\\]|(?:^|[^\\])(?:\\\\)+)$/,
- whitespace_pattern = /^\s+$/,
- attribute_nonspecial_pattern = /[^\s=~!^|$*\[\]\(\)]{2}/,
- state_patterns = [
- /\s+|\/\*|["'>~+\[\(]/g, // general
- /\s+|\/\*|["'\[\]\(\)]/g, // [..] set
- /\s+|\/\*|["'\[\]\(\)]/g, // (..) set
- null, // string literal (placeholder)
- /\*\//g // comment
- ]
- ;
-
- sel = sel.trim();
-
- while (true) {
- unmatched = "";
-
- regex = state_patterns[state[state.length-1]];
-
- regex.lastIndex = next_match_idx;
- match = regex.exec(sel);
-
- // matched text to process?
- if (match) {
- prev_match_idx = next_match_idx;
- next_match_idx = regex.lastIndex;
-
- // collect the previous string chunk not matched before this token
- if (prev_match_idx < next_match_idx - match[0].length) {
- unmatched = sel.substring(prev_match_idx,next_match_idx - match[0].length);
- }
-
- // need to force a space (possibly skipped
- // previously by the parser)?
- if (
- state[state.length-1] === 1 &&
- attribute_nonspecial_pattern.test(
- tokens[tokens.length-1].substr(-1) +
- unmatched.charAt(0)
- )
- ) {
- tokens.push(" ");
- }
-
- // general, [ ] pair, ( ) pair?
- if (state[state.length-1] < 3) {
- saveUnmatched();
-
- // starting a [ ] pair?
- if (match[0] === "[") {
- state.push(1);
- }
- // starting a ( ) pair?
- else if (match[0] === "(") {
- state.push(2);
- }
- // starting a string literal?
- else if (/^["']$/.test(match[0])) {
- state.push(3);
- state_patterns[3] = new RegExp(match[0],"g");
- }
- // starting a comment?
- else if (match[0] === "/*") {
- state.push(4);
- }
- // ending a [ ] or ( ) pair?
- else if (/^[\]\)]$/.test(match[0]) && state.length > 0) {
- state.pop();
- }
- // handling whitespace or a combinator?
- else if (/^(?:\s+|[~+>])$/.test(match[0])) {
- // need to insert whitespace before?
- if (tokens.length > 0 &&
- !whitespace_pattern.test(tokens[tokens.length-1]) &&
- state[state.length-1] === 0
- ) {
- // add normalized whitespace
- tokens.push(" ");
- }
-
- // whitespace token we can skip?
- if (whitespace_pattern.test(match[0])) {
- continue;
- }
- }
-
- // save matched text
- tokens.push(match[0]);
- }
- // otherwise, string literal or comment
- else {
- // save unmatched text
- tokens[tokens.length-1] += unmatched;
-
- // unescaped terminator to string literal or comment?
- if (not_escaped_pattern.test(tokens[tokens.length-1])) {
- // comment terminator?
- if (state[state.length-1] === 4) {
- // ok to drop comment?
- if (tokens.length < 2 ||
- whitespace_pattern.test(tokens[tokens.length-2])
- ) {
- tokens.pop();
- }
- // otherwise, turn comment into whitespace
- else {
- tokens[tokens.length-1] = " ";
- }
-
- // handled already
- match[0] = "";
- }
-
- state.pop();
- }
-
- // append matched text to existing token
- tokens[tokens.length-1] += match[0];
- }
- }
- // otherwise, end of processing (no more matches)
- else {
- unmatched = sel.substr(next_match_idx);
- saveUnmatched();
-
- break;
- }
- }
-
- return tokens.join("").trim();
- }
-
- return normalizeSelector;
-});
-
projects / dotfiles / .git / blobdiff