stylint/src/utils/trimLine.js

A linter for stylus

'use strict'

var urlOrContentRe = /(["'].+["'])|( +|:)url\(.+\)/

/**
 * @description separate out line comments
 *              strip out interpolation
 *              strip out url and content strings
 * @param {string} [line] curr line being linted
 * @returns {string} the line, but minus all the annoying stuff
*/
var trimLine = function( line ) {
	var startsWithCommentRe = /(^\/\/)/

	// reset values from previous line
	this.state.hasComment = false
	this.cache.comment = ''

	// remove urls, content strings
	var noUrl = line.replace( urlOrContentRe, ' ' )

	// strip line comments, if any exist after stripping urls
	if ( noUrl.indexOf( '//' ) !== -1 ) {

		// a for real line comment, no http:// false positive
		this.state.hasComment = true
		// separate out line comment for spacing check
		this.cache.comment = noUrl.slice( noUrl.indexOf( '//' ), noUrl.length )

		// if this line comment is at the end of the line
		if ( !startsWithCommentRe.test( noUrl.trim() ) ) {
			noUrl = noUrl.slice( 0, noUrl.indexOf( '//' ) - 1 )
		}
	}

	// strip interpolated variables
	return noUrl.replace( /( *{ *\S+ *} *)/, '' )
}

module.exports = trimLine