/**
 * Converts a String to a UInt8 array of character codes
 * @param {String} str Input string
 * @returns {Uint8Array} Uint8 Array of character codes
 */
function stringToUint8Array(str) {
    var uint=new Uint8Array(str.length);
    for(var i=0,j=str.length;i<j;i++){
        uint[i]=str.charCodeAt(i);
    }
    return uint;
}

function checkToken(token, data, dataOffset) {
    if(dataOffset + token.length > data.length) {
        //console.log('dataOffset >> ', dataOffset);
        return false;
    }

    for(var i = 0; i < token.length; i++) {
        if(token[i] !== data[endIndex++]) {
            if(endIndex > 520000) {
                console.log('token=',uint8ArrayToString(token));
                console.log('data=', uint8ArrayToString(data, dataOffset, endIndex-dataOffset));
                console.log('miss at %d %s dataOffset=%d', i, String.fromCharCode(data[endIndex]), endIndex);
                console.log('miss at %d %s dataOffset=%d', i, String.fromCharCode(token[endIndex]), endIndex);
            }
            return false;
        }
    }
    return true;
}


findIndexOfString = function(data, str, offset) {
    offset = offset || 0;

    var token = stringToUint8Array(str);

    for(var i=offset; i < data.length; i++) {
        if(data[i] === token[0]) {
            //console.log('match @', i);
            if(checkToken(token, data, i)) {
                return i;
            }
        }
    }
    return -1;
};