codenothing/CSSCompressor

/**
 * 
 * Strip Comments
 * 
 * @author: Corey Hart <http://www.codenothing.com>
 * @description: Removes all comments from style sheet, with the exception of comments that are prefixed with a bang '/*!'
 * 
 * @before:
 *     /*
 *         Multi Line Comment
 *     *\/
 *
 *     .example {
 *         color: red;
 *     }
 *
 * 
 * @after:
 *     .example {
 *         color: red;
 *     }
 * 
 */

var CSSCompressor = global.CSSCompressor,
    rcompreserve = /^\/\*\!/;

CSSCompressor.rule({

    name: 'Strip Comments',
    type: CSSCompressor.RULE_TYPE_SHEET,
    group: 'Trim',
    description: "Removes all comments from style sheet, with the exception of comments that are prefixed with a bang '/*!'",
    priority: CSSCompressor.PRIORITY_LOWEST,

    callback: function( branches, compressor ) {
        function strip( array ) {
            for ( var i = -1, branch; ++i < array.length; ) {
                branch = array[ i ];

                if ( branch.comment && ! rcompreserve.exec( branch.comment ) ) {
                    compressor.log( "Removing Comment", branch.position );
                    CSSCompressor.removeItem( array, branch );
                    i--;
                }
                else if ( CSSCompressor.isArray( branch.branches ) ) {
                    strip( branch.branches );
                }
            }
        }
        
        // Start with root branches
        strip( branches );
    }

});