SimenB/stylint

'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