in src/beautify/beautify-css.js [1183:1503]
Beautifier.prototype.beautify = function() {
if (this._options.disabled) {
return this._source_text;
}
var source_text = this._source_text;
var eol = this._options.eol;
if (eol === 'auto') {
eol = '\n';
if (source_text && lineBreak.test(source_text || '')) {
eol = source_text.match(lineBreak)[0];
}
}
// HACK: newline parsing inconsistent. This brute force normalizes the this._input.
source_text = source_text.replace(allLineBreaks, '\n');
// reset
var baseIndentString = source_text.match(/^[\t ]*/)[0];
this._output = new Output(this._options, baseIndentString);
this._input = new InputScanner(source_text);
this._indentLevel = 0;
this._nestedLevel = 0;
this._ch = null;
var parenLevel = 0;
var insideRule = false;
// This is the value side of a property value pair (blue in the following ex)
// label { content: blue }
var insidePropertyValue = false;
var enteringConditionalGroup = false;
var insideAtExtend = false;
var insideAtImport = false;
var topCharacter = this._ch;
var whitespace;
var isAfterSpace;
var previous_ch;
while (true) {
whitespace = this._input.read(whitespacePattern);
isAfterSpace = whitespace !== '';
previous_ch = topCharacter;
this._ch = this._input.next();
if (this._ch === '\\' && this._input.hasNext()) {
this._ch += this._input.next();
}
topCharacter = this._ch;
if (!this._ch) {
break;
} else if (this._ch === '/' && this._input.peek() === '*') {
// /* css comment */
// Always start block comments on a new line.
// This handles scenarios where a block comment immediately
// follows a property definition on the same line or where
// minified code is being beautified.
this._output.add_new_line();
this._input.back();
var comment = this._input.read(block_comment_pattern);
// Handle ignore directive
var directives = directives_core.get_directives(comment);
if (directives && directives.ignore === 'start') {
comment += directives_core.readIgnored(this._input);
}
this.print_string(comment);
// Ensures any new lines following the comment are preserved
this.eatWhitespace(true);
// Block comments are followed by a new line so they don't
// share a line with other properties
this._output.add_new_line();
} else if (this._ch === '/' && this._input.peek() === '/') {
// // single line comment
// Preserves the space before a comment
// on the same line as a rule
this._output.space_before_token = true;
this._input.back();
this.print_string(this._input.read(comment_pattern));
// Ensures any new lines following the comment are preserved
this.eatWhitespace(true);
} else if (this._ch === '@') {
this.preserveSingleSpace(isAfterSpace);
// deal with less propery mixins @{...}
if (this._input.peek() === '{') {
this.print_string(this._ch + this.eatString('}'));
} else {
this.print_string(this._ch);
// strip trailing space, if present, for hash property checks
var variableOrRule = this._input.peekUntilAfter(/[: ,;{}()[\]\/='"]/g);
if (variableOrRule.match(/[ :]$/)) {
// we have a variable or pseudo-class, add it and insert one space before continuing
variableOrRule = this.eatString(": ").replace(/\s$/, '');
this.print_string(variableOrRule);
this._output.space_before_token = true;
}
variableOrRule = variableOrRule.replace(/\s$/, '');
if (variableOrRule === 'extend') {
insideAtExtend = true;
} else if (variableOrRule === 'import') {
insideAtImport = true;
}
// might be a nesting at-rule
if (variableOrRule in this.NESTED_AT_RULE) {
this._nestedLevel += 1;
if (variableOrRule in this.CONDITIONAL_GROUP_RULE) {
enteringConditionalGroup = true;
}
// might be less variable
} else if (!insideRule && parenLevel === 0 && variableOrRule.indexOf(':') !== -1) {
insidePropertyValue = true;
this.indent();
}
}
} else if (this._ch === '#' && this._input.peek() === '{') {
this.preserveSingleSpace(isAfterSpace);
this.print_string(this._ch + this.eatString('}'));
} else if (this._ch === '{') {
if (insidePropertyValue) {
insidePropertyValue = false;
this.outdent();
}
// when entering conditional groups, only rulesets are allowed
if (enteringConditionalGroup) {
enteringConditionalGroup = false;
insideRule = (this._indentLevel >= this._nestedLevel);
} else {
// otherwise, declarations are also allowed
insideRule = (this._indentLevel >= this._nestedLevel - 1);
}
if (this._options.newline_between_rules && insideRule) {
if (this._output.previous_line && this._output.previous_line.item(-1) !== '{') {
this._output.ensure_empty_line_above('/', ',');
}
}
this._output.space_before_token = true;
// The difference in print_string and indent order is necessary to indent the '{' correctly
if (this._options.brace_style === 'expand') {
this._output.add_new_line();
this.print_string(this._ch);
this.indent();
this._output.set_indent(this._indentLevel);
} else {
this.indent();
this.print_string(this._ch);
}
this.eatWhitespace(true);
this._output.add_new_line();
} else if (this._ch === '}') {
this.outdent();
this._output.add_new_line();
if (previous_ch === '{') {
this._output.trim(true);
}
insideAtImport = false;
insideAtExtend = false;
if (insidePropertyValue) {
this.outdent();
insidePropertyValue = false;
}
this.print_string(this._ch);
insideRule = false;
if (this._nestedLevel) {
this._nestedLevel--;
}
this.eatWhitespace(true);
this._output.add_new_line();
if (this._options.newline_between_rules && !this._output.just_added_blankline()) {
if (this._input.peek() !== '}') {
this._output.add_new_line(true);
}
}
} else if (this._ch === ":") {
if ((insideRule || enteringConditionalGroup) && !(this._input.lookBack("&") || this.foundNestedPseudoClass()) && !this._input.lookBack("(") && !insideAtExtend && parenLevel === 0) {
// 'property: value' delimiter
// which could be in a conditional group query
this.print_string(':');
if (!insidePropertyValue) {
insidePropertyValue = true;
this._output.space_before_token = true;
this.eatWhitespace(true);
this.indent();
}
} else {
// sass/less parent reference don't use a space
// sass nested pseudo-class don't use a space
// preserve space before pseudoclasses/pseudoelements, as it means "in any child"
if (this._input.lookBack(" ")) {
this._output.space_before_token = true;
}
if (this._input.peek() === ":") {
// pseudo-element
this._ch = this._input.next();
this.print_string("::");
} else {
// pseudo-class
this.print_string(':');
}
}
} else if (this._ch === '"' || this._ch === '\'') {
this.preserveSingleSpace(isAfterSpace);
this.print_string(this._ch + this.eatString(this._ch));
this.eatWhitespace(true);
} else if (this._ch === ';') {
if (parenLevel === 0) {
if (insidePropertyValue) {
this.outdent();
insidePropertyValue = false;
}
insideAtExtend = false;
insideAtImport = false;
this.print_string(this._ch);
this.eatWhitespace(true);
// This maintains single line comments on the same
// line. Block comments are also affected, but
// a new line is always output before one inside
// that section
if (this._input.peek() !== '/') {
this._output.add_new_line();
}
} else {
this.print_string(this._ch);
this.eatWhitespace(true);
this._output.space_before_token = true;
}
} else if (this._ch === '(') { // may be a url
if (this._input.lookBack("url")) {
this.print_string(this._ch);
this.eatWhitespace();
parenLevel++;
this.indent();
this._ch = this._input.next();
if (this._ch === ')' || this._ch === '"' || this._ch === '\'') {
this._input.back();
} else if (this._ch) {
this.print_string(this._ch + this.eatString(')'));
if (parenLevel) {
parenLevel--;
this.outdent();
}
}
} else {
this.preserveSingleSpace(isAfterSpace);
this.print_string(this._ch);
this.eatWhitespace();
parenLevel++;
this.indent();
}
} else if (this._ch === ')') {
if (parenLevel) {
parenLevel--;
this.outdent();
}
this.print_string(this._ch);
} else if (this._ch === ',') {
this.print_string(this._ch);
this.eatWhitespace(true);
if (this._options.selector_separator_newline && !insidePropertyValue && parenLevel === 0 && !insideAtImport && !insideAtExtend) {
this._output.add_new_line();
} else {
this._output.space_before_token = true;
}
} else if ((this._ch === '>' || this._ch === '+' || this._ch === '~') && !insidePropertyValue && parenLevel === 0) {
//handle combinator spacing
if (this._options.space_around_combinator) {
this._output.space_before_token = true;
this.print_string(this._ch);
this._output.space_before_token = true;
} else {
this.print_string(this._ch);
this.eatWhitespace();
// squash extra whitespace
if (this._ch && whitespaceChar.test(this._ch)) {
this._ch = '';
}
}
} else if (this._ch === ']') {
this.print_string(this._ch);
} else if (this._ch === '[') {
this.preserveSingleSpace(isAfterSpace);
this.print_string(this._ch);
} else if (this._ch === '=') { // no whitespace before or after
this.eatWhitespace();
this.print_string('=');
if (whitespaceChar.test(this._ch)) {
this._ch = '';
}
} else if (this._ch === '!' && !this._input.lookBack("\\")) { // !important
this.print_string(' ');
this.print_string(this._ch);
} else {
this.preserveSingleSpace(isAfterSpace);
this.print_string(this._ch);
}
}
var sweetCode = this._output.get_code(eol);
return sweetCode;
};