Used to print debug message in node.js that include filename and line number.

debug.js

// Modified from code found in the following stackoverflow answer:
// http://stackoverflow.com/questions/14172455/get-name-and-line-of-calling-function-in-node-js

Object.defineProperty(global, '__stack', {
  get: function(){
    var orig = Error.prepareStackTrace;
    Error.prepareStackTrace = function(_, stack){ return stack; };
    var err = new Error;
    Error.captureStackTrace(err, arguments.callee);
    var stack = err.stack;
    Error.prepareStackTrace = orig;
    return stack;
  }
});

Object.defineProperty(global, '__line', {
    get: function(){
        return __stack[1].getLineNumber();
    }
});

Object.defineProperty(global, '__parent_line', {
  get: function(){
    return __stack[2].getLineNumber();
  }
});

Object.defineProperty(global, '__filename', {
    get: function(){
        return __stack[1].getFileName();
    }
});

Object.defineProperty(global, '__parent_filename', {
    get: function(){
        return __stack[2].getFileName();
    }
});

Object.defineProperty(global, '__parent_function', {
    get: function(){
        return __stack[2].getFunctionName();
    }
});

var debug = function(msg, obj){
    var cwd = process.cwd();
    var filename = __parent_filename.slice(cwd.length + 1); // plus one to trim leading slash
    var title = "" + filename + ":" + __parent_line + " ";

    console.log();
    console.log("__ " + title + " " + new Array( 76-title.length ).join( '_' ));
    
    if(typeof msg == 'string') console.log(msg);
    else console.log(util.inspect(msg, {colors: true, depth: 2}));
    
    if(obj) console.log(util.inspect(obj, {colors: true, depth: 2}));
}

module.exports = debug;