queryStringAsStruct function.cfm

<cfscript>
    public struct function queryStringToStruct(
        required string urlString,
        boolean preserveEmptyKeys = true,
        boolean decodeValues = false
    ){
        var emptyKeyValBool = arguments.preserveEmptyKeys;
        var decodeURLValues = arguments.decodeValues;
        var queryStr = reReplace(arguments.urlString,"^\?","");
        var queryParamStruct = {};
        var queryStrArr = listToArray(queryStr,"&",true);
        if ( arrayisEmpty(queryStrArr) ) {
            throw("Empty or invalid query string.");
        }
        try{
            queryStrArr.each(function(qParam, qIdx) {
                tempStruct = {};
                tempArr = listToArray(qParam,"=", true);
                if ( emptyKeyValBool ) {
                    tempStruct[tempArr[1]] = tempArr[2];
                } else if( tempArr[2].len() && !emptyKeyValBool ) {
                    tempStruct[tempArr[1]] = tempArr[2];
                }
                if ( decodeURLValues && tempArr[2].len() ) {
                    tempStruct[tempArr[1]] = decodeFromURL(tempArr[2]);
                }
                queryParamStruct.append(tempStruct, true);
            });
        }catch(any excpt) {
                //log etc.....
        }
        finally{
            return queryParamStruct;
        }
    }

   /* Tests */
    writedump(parseQueryStringAsStruct(""));
	writedump(parseQueryStringAsStruct("?qsParam1=tjjjj&qsParam2=lllll&qsParamempty=",true));
	writedump(parseQueryStringAsStruct("?qsParam1=tjjjj&qsParamempty=&qsParam2=lllll",true));
	writedump(parseQueryStringAsStruct("?qsParam1=tjjjj&qsParam2=lllll&qsParamempty=",false));
	writedump(parseQueryStringAsStruct("?qsParam1=tjjjj&qsParam2=lllll&qsParamempty=&qsParamEncoced=%28my%20val%20in%20parens%29",false));
	writedump(parseQueryStringAsStruct("?qsParam1=tjjjj&qsParam2=lllll&qsParamempty=&qsParamEncoced=%28my%20val%20in%20parens%29",false,true));
    writedump(parseQueryStringAsStruct("?qsParam1=tjjjj&qsParam2=lllll&qsParamempty=&qsParamEncoced=%28my%20val%20in%20parens%29",true,true));

</cfscript>