move database helpers into their own files

src/database/level.js

@@ -13,7 +13,6 @@
 	var winston = require('winston'),
 		nconf = require('nconf'),
 		path = require('path'),
-		async = require('async'),
 		express = require('express'),
 		utils = require('./../../public/src/utils.js'),
 		levelup,
@@ -81,22 +80,6 @@
 		db.close(callback);
 	};
 
-	var helpers = {};
-
-	helpers.iterator = function(fn, keys, value, callback) {
-		var results = [];
-
-		async.each(keys, function(key, next) {
-			module[fn](key, value, function(err, result) {
-				results.push(result);
-				next();
-			});
-		}, function(err) {
-			callback(err, results);
-		});
-	};
-
 	module.helpers = module.helpers || {};
-	module.helpers.level = helpers;
-
+	module.helpers.level = require('./level/helpers');
 }(exports));

src/database/level/helpers.js

@@ -0,0 +1,19 @@
+"use strict";
+
+var helpers = {},
+	async = require('async');
+
+helpers.iterator = function(fn, keys, value, callback) {
+	var results = [];
+
+	async.each(keys, function(key, next) {
+		module[fn](key, value, function(err, result) {
+			results.push(result);
+			next();
+		});
+	}, function(err) {
+		callback(err, results);
+	});
+};
+
+module.exports = helpers;

src/database/mongo.js

@@ -109,56 +109,7 @@
 		db.close();
 	};
 
-
-	var helpers = {};
-	helpers.findItem = function(data, key) {
-		if(!data) {
-			return null;
-		}
-
-		for(var i=0; i<data.length; ++i) {
-			if(data[i]._key === key) {
-				var item = data.splice(i, 1);
-				if(item && item.length) {
-					return item[0];
-				} else {
-					return null;
-				}
-			}
-		}
-		return null;
-	};
-
-	helpers.fieldToString = function(field) {
-		if(field === null || field === undefined) {
-			return field;
-		}
-
-		if(typeof field !== 'string') {
-			field = field.toString();
-		}
-		// if there is a '.' in the field name it inserts subdocument in mongo, replace '.'s with \uff0E
-		field = field.replace(/\./g, '\uff0E');
-		return field;
-	};
-
-	helpers.valueToString = function(value) {
-		if(value === null || value === undefined) {
-			return value;
-		}
-
-		return value.toString();
-	};
-
-	helpers.done = function(cb) {
-		return function(err, result) {
-			if (typeof cb === 'function') {
-				cb(err, result);
-			}
-		};
-	};
-
 	module.helpers = module.helpers || {};
-	module.helpers.mongo = helpers;
+	module.helpers.level = require('./mongo/helpers');
 }(exports));
 

src/database/mongo/helpers.js

@@ -0,0 +1,52 @@
+"use strict";
+
+var helpers = {};
+
+helpers.findItem = function(data, key) {
+	if(!data) {
+		return null;
+	}
+
+	for(var i=0; i<data.length; ++i) {
+		if(data[i]._key === key) {
+			var item = data.splice(i, 1);
+			if(item && item.length) {
+				return item[0];
+			} else {
+				return null;
+			}
+		}
+	}
+	return null;
+};
+
+helpers.fieldToString = function(field) {
+	if(field === null || field === undefined) {
+		return field;
+	}
+
+	if(typeof field !== 'string') {
+		field = field.toString();
+	}
+	// if there is a '.' in the field name it inserts subdocument in mongo, replace '.'s with \uff0E
+	field = field.replace(/\./g, '\uff0E');
+	return field;
+};
+
+helpers.valueToString = function(value) {
+	if(value === null || value === undefined) {
+		return value;
+	}
+
+	return value.toString();
+};
+
+helpers.done = function(cb) {
+	return function(err, result) {
+		if (typeof cb === 'function') {
+			cb(err, result);
+		}
+	};
+};
+
+module.exports = helpers;

src/database/redis/helpers.js

@@ -0,0 +1,6 @@
+"use strict";
+
+var helpers = {};
+
+
+module.exports = helpers;