Add beautify-css.js

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/*jshint curly:true, eqeqeq:true, laxbreak:true, noempty:false */
/*
The MIT License (MIT)
Copyright (c) 2007-2013 Einar Lielmanis and contributors.
Permission is hereby granted, free of charge, to any person
obtaining a copy of this software and associated documentation files
(the "Software"), to deal in the Software without restriction,
including without limitation the rights to use, copy, modify, merge,
publish, distribute, sublicense, and/or sell copies of the Software,
and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
CSS Beautifier
---------------
Written by Harutyun Amirjanyan, (amirjanyan@gmail.com)
Based on code initially developed by: Einar Lielmanis, <einar@jsbeautifier.org>
http://jsbeautifier.org/
Usage:
css_beautify(source_text);
css_beautify(source_text, options);
The options are (default in brackets):
indent_size (4) indentation size,
indent_char (space) character to indent with,
selector_separator_newline (true) - separate selectors with newline or
not (e.g. "a,\nbr" or "a, br")
end_with_newline (false) - end with a newline
newline_between_rules (true) - add a new line after every css rule
e.g
css_beautify(css_source_text, {
'indent_size': 1,
'indent_char': '\t',
'selector_separator': ' ',
'end_with_newline': false,
'newline_between_rules': true
});
*/
// http://www.w3.org/TR/CSS21/syndata.html#tokenization
// http://www.w3.org/TR/css3-syntax/
(function() {
function css_beautify(source_text, options) {
options = options || {};
var indentSize = options.indent_size || 4;
var indentCharacter = options.indent_char || ' ';
var selectorSeparatorNewline = (options.selector_separator_newline === undefined) ? true : options.selector_separator_newline;
var end_with_newline = (options.end_with_newline === undefined) ? false : options.end_with_newline;
var newline_between_rules = (options.newline_between_rules === undefined) ? true : options.newline_between_rules;
// compatibility
if (typeof indentSize === "string") {
indentSize = parseInt(indentSize, 10);
}
// tokenizer
var whiteRe = /^\s+$/;
var wordRe = /[\w$\-_]/;
var pos = -1,
ch;
var parenLevel = 0;
function next() {
ch = source_text.charAt(++pos);
return ch || '';
}
function peek(skipWhitespace) {
var prev_pos = pos;
if (skipWhitespace) {
eatWhitespace();
}
result = source_text.charAt(pos + 1) || '';
pos = prev_pos - 1;
next();
return result;
}
function eatString(endChars) {
var start = pos;
while (next()) {
if (ch === "\\") {
next();
} else if (endChars.indexOf(ch) !== -1) {
break;
} else if (ch === "\n") {
break;
}
}
return source_text.substring(start, pos + 1);
}
function peekString(endChar) {
var prev_pos = pos;
var str = eatString(endChar);
pos = prev_pos - 1;
next();
return str;
}
function eatWhitespace() {
var result = '';
while (whiteRe.test(peek())) {
next();
result += ch;
}
return result;
}
function skipWhitespace() {
var result = '';
if (ch && whiteRe.test(ch)) {
result = ch;
}
while (whiteRe.test(next())) {
result += ch;
}
return result;
}
function eatComment(singleLine) {
var start = pos;
singleLine = peek() === "/";
next();
while (next()) {
if (!singleLine && ch === "*" && peek() === "/") {
next();
break;
} else if (singleLine && ch === "\n") {
return source_text.substring(start, pos);
}
}
return source_text.substring(start, pos) + ch;
}
function lookBack(str) {
return source_text.substring(pos - str.length, pos).toLowerCase() ===
str;
}
// Nested pseudo-class if we are insideRule
// and the next special character found opens
// a new block
function foundNestedPseudoClass() {
for (var i = pos + 1; i < source_text.length; i++) {
var ch = source_text.charAt(i);
if (ch === "{") {
return true;
} else if (ch === ";" || ch === "}" || ch === ")") {
return false;
}
}
return false;
}
// printer
var basebaseIndentString = source_text.match(/^[\t ]*/)[0];
var singleIndent = new Array(indentSize + 1).join(indentCharacter);
var indentLevel = 0;
var nestedLevel = 0;
function indent() {
indentLevel++;
basebaseIndentString += singleIndent;
}
function outdent() {
indentLevel--;
basebaseIndentString = basebaseIndentString.slice(0, -indentSize);
}
var print = {};
print["{"] = function(ch) {
print.singleSpace();
output.push(ch);
print.newLine();
};
print["}"] = function(ch) {
print.newLine();
output.push(ch);
print.newLine();
};
print._lastCharWhitespace = function() {
return whiteRe.test(output[output.length - 1]);
};
print.newLine = function(keepWhitespace) {
if (!keepWhitespace) {
print.trim();
}
if (output.length) {
output.push('\n');
}
if (basebaseIndentString) {
output.push(basebaseIndentString);
}
};
print.singleSpace = function() {
if (output.length && !print._lastCharWhitespace()) {
output.push(' ');
}
};
print.trim = function() {
while (print._lastCharWhitespace()) {
output.pop();
}
};
var output = [];
if (basebaseIndentString) {
output.push(basebaseIndentString);
}
/*_____________________--------------------_____________________*/
var insideRule = false;
var enteringConditionalGroup = false;
var top_ch = '';
var last_top_ch = '';
while (true) {
var whitespace = skipWhitespace();
var isAfterSpace = whitespace !== '';
var isAfterNewline = whitespace.indexOf('\n') !== -1;
last_top_ch = top_ch;
top_ch = ch;
if (!ch) {
break;
} else if (ch === '/' && peek() === '*') { /* css comment */
var header = lookBack("");
print.newLine();
output.push(eatComment());
print.newLine();
if (header) {
print.newLine(true);
}
} else if (ch === '/' && peek() === '/') { // single line comment
if (!isAfterNewline && last_top_ch !== '{') {
print.trim();
}
print.singleSpace();
output.push(eatComment());
print.newLine();
} else if (ch === '@') {
// pass along the space we found as a separate item
if (isAfterSpace) {
print.singleSpace();
}
output.push(ch);
// strip trailing space, if present, for hash property checks
var variableOrRule = peekString(": ,;{}()[]/='\"");
if (variableOrRule.match(/[ :]$/)) {
// we have a variable or pseudo-class, add it and insert one space before continuing
next();
variableOrRule = eatString(": ").replace(/\s$/, '');
output.push(variableOrRule);
print.singleSpace();
}
variableOrRule = variableOrRule.replace(/\s$/, '')
// might be a nesting at-rule
if (variableOrRule in css_beautify.NESTED_AT_RULE) {
nestedLevel += 1;
if (variableOrRule in css_beautify.CONDITIONAL_GROUP_RULE) {
enteringConditionalGroup = true;
}
}
} else if (ch === '{') {
if (peek(true) === '}') {
eatWhitespace();
next();
print.singleSpace();
output.push("{}");
print.newLine();
if (newline_between_rules && indentLevel === 0) {
print.newLine(true);
}
} else {
indent();
print["{"](ch);
// when entering conditional groups, only rulesets are allowed
if (enteringConditionalGroup) {
enteringConditionalGroup = false;
insideRule = (indentLevel > nestedLevel);
} else {
// otherwise, declarations are also allowed
insideRule = (indentLevel >= nestedLevel);
}
}
} else if (ch === '}') {
outdent();
print["}"](ch);
insideRule = false;
if (nestedLevel) {
nestedLevel--;
}
if (newline_between_rules && indentLevel === 0) {
print.newLine(true);
}
} else if (ch === ":") {
eatWhitespace();
if ((insideRule || enteringConditionalGroup) &&
!(lookBack("&") || foundNestedPseudoClass())) {
// 'property: value' delimiter
// which could be in a conditional group query
output.push(':');
print.singleSpace();
} else {
// sass/less parent reference don't use a space
// sass nested pseudo-class don't use a space
if (peek() === ":") {
// pseudo-element
next();
output.push("::");
} else {
// pseudo-class
output.push(':');
}
}
} else if (ch === '"' || ch === '\'') {
if (isAfterSpace) {
print.singleSpace();
}
output.push(eatString(ch));
} else if (ch === ';') {
output.push(ch);
print.newLine();
} else if (ch === '(') { // may be a url
if (lookBack("url")) {
output.push(ch);
eatWhitespace();
if (next()) {
if (ch !== ')' && ch !== '"' && ch !== '\'') {
output.push(eatString(')'));
} else {
pos--;
}
}
} else {
parenLevel++;
if (isAfterSpace) {
print.singleSpace();
}
output.push(ch);
eatWhitespace();
}
} else if (ch === ')') {
output.push(ch);
parenLevel--;
} else if (ch === ',') {
output.push(ch);
eatWhitespace();
if (!insideRule && selectorSeparatorNewline && parenLevel < 1) {
print.newLine();
} else {
print.singleSpace();
}
} else if (ch === ']') {
output.push(ch);
} else if (ch === '[') {
if (isAfterSpace) {
print.singleSpace();
}
output.push(ch);
} else if (ch === '=') { // no whitespace before or after
eatWhitespace()
ch = '=';
output.push(ch);
} else {
if (isAfterSpace) {
print.singleSpace();
}
output.push(ch);
}
}
var sweetCode = output.join('').replace(/[\r\n\t ]+$/, '');
// establish end_with_newline
if (end_with_newline) {
sweetCode += "\n";
}
return sweetCode;
}
// https://developer.mozilla.org/en-US/docs/Web/CSS/At-rule
css_beautify.NESTED_AT_RULE = {
"@page": true,
"@font-face": true,
"@keyframes": true,
// also in CONDITIONAL_GROUP_RULE below
"@media": true,
"@supports": true,
"@document": true
};
css_beautify.CONDITIONAL_GROUP_RULE = {
"@media": true,
"@supports": true,
"@document": true
};
/*global define */
if (typeof define === "function" && define.amd) {
// Add support for AMD ( https://github.com/amdjs/amdjs-api/wiki/AMD#defineamd-property- )
define([], function() {
return {
css_beautify: css_beautify
};
});
} else if (typeof exports !== "undefined") {
// Add support for CommonJS. Just put this file somewhere on your require.paths
// and you will be able to `var html_beautify = require("beautify").html_beautify`.
exports.css_beautify = css_beautify;
} else if (typeof window !== "undefined") {
// If we're running a web page and don't have either of the above, add our one global
window.css_beautify = css_beautify;
} else if (typeof global !== "undefined") {
// If we don't even have window, try global.
global.css_beautify = css_beautify;
}
}());