DFP Key Cleaning

dfp_key_clean.js

var _cleanValue = function(val) {
    // Convert pipes and spaces to underscores
    val = val.replace(/\|/g, "_");
    val = val.replace(/\ /g, "_");
    val = val.replace(/\-/g, "_");

    // Strip out any other bad characters.
    val = val.replace(/\;/g, "");
    val = val.replace(/\&/g, "");
    val = val.replace(/\\/g, "");
    val = val.replace(/\//g, "");

    var invalidChars = "#\",*.()=+<>[]| "; 
    var encodeChars = "$-_.";
    
    var valChars = val.split("");
    var chars = []; // Final set of valid characters

    var arrLen = valChars.length;
    var curChar;
    for (var i = 0; i < valChars.length; i++) {
        curChar = valChars[i];

        // Check if invalid
        if( invalidChars.indexOf(curChar) === -1 ){

            // check if needs encoding
            if( encodeChars.indexOf(curChar) > -1 ){
                // Needs escaping
                chars.push(escape(curChar));
            } else {
                // Valid and safe
                chars.push(valChars[i]);
            }
        }
    }

    // join chars and return
    return chars.join("");
};