nightfury7 / universalbasics.js

src/ub.arrays.objects.js

/** global: UB */
/** global: Buffer */

/*! ARRAY UTILS */

var arrayFuncs = {

	merge: function(){
		var arr = this;
		var val1 = arr[0];

		// if array of strings
		if (val1.isString()){
			return val1.join("");
		}

		// if array of arrays
		if (val1.isArray()){
			var merged = [];
			for (var a = 0, al = arr.length; a<al; a++){
				merged.addArray(arr[a]);
			}
			return merged;
		}

		// if array of Buffers
		//removeIf(nodejs)
		if (val1 instanceof Buffer){

			// calc the total length of all buffers
			var buffers = arr;
			var len = 0;
			for(var b = 0, bl = buffers.length; b < bl; b++) {
				len += buffers[b].length;
			}

			// create a new buffer of that length
			var mega = new Buffer(len);

			// write all buffers into the mega buffer
			var cur = 0;
			for(var b = 0, bl = buffers.length; b < bl; b++) {
				buffers[b].copy(mega, cur, 0);
				cur += buffers[b].length;
			}
			return mega;
		}
		//endRemoveIf(nodejs)

		return null;
	},
	
	where: function(callback){
		var list = this;
		var results = [];
		for (var i = 0; i<list.length; i++){
			var obj = list[i];
			if (callback(obj) == true){
				results.push(obj);
			}
		}
		return results;
	},
	
	hasWhere: function(callback){
		var list = this;
		for (var i = 0; i<list.length; i++){
			var obj = list[i];
			if (callback(obj) == true){
				return true;
			}
		}
		return false;
	},
	
	firstWhere: function(callback){
		var list = this;
		for (var i = 0; i<list.length; i++){
			var obj = list[i];
			if (callback(obj) == true){
				return obj;
			}
		}
		return null;
	},
	
	lastWhere: function(callback){
		var list = this;
		for (var i = list.length; i>=0; i--){
			var obj = list[i];
			if (callback(obj) == true){
				return obj;
			}
		}
		return null;
	},
	
	props: function(prop, defaultVal = null){
		var list = this;
		var results = [];
		var deepProp = prop.isArray() || prop.contains(".");
		for (var i = 0; i<list.length; i++){
			var obj = list[i];
			if (deepProp){
				results.push(obj != null ? obj[prop] : defaultVal);
			}else{
				results.push(obj != null ? obj.getPath(prop) : defaultVal);
			}
		}
		return results;
	},
	
	setProps: function(prop, newValue){
		var list = this;
		var deepProp = prop.isArray() || prop.contains(".");
		for (var i = 0; i<list.length; i++){
			var obj = list[i];
			if (obj != null){
				if (deepProp){
					obj[prop] = newValue;
				}else{
					obj.setPath(prop, newValue);
				}
			}
		}
		return results;

The variable results seems to be never declared. If this is a global, consider adding a /** global: results */ comment.

	},
	
	setPropsByArray: function(prop, newValues){
		var list = this;
		var deepProp = prop.isArray() || prop.contains(".");
		for (var i = 0; i<list.length; i++){
			var obj = list[i];
			if (obj != null){
				if (deepProp){
					obj[prop] = newValues[i];
				}else{
					obj.setPath(prop, newValues[i]);
				}
			}
		}
		return results;

The variable results seems to be never declared. If this is a global, consider adding a /** global: results */ comment.

	},
	
	none:null
};

// register funcs
UB.registerFuncs(Array.prototype, arrayFuncs);