change string functions

README.md

@@ -707,6 +707,7 @@ Number. The month passed to the constructor, possibly fixed up. It is preferred
 
 Number. The day passed to the constructor, possibly fixed up. It is preferred to get this value with `Hebcal.HDate.prototype.getDate()`. (Not actually a prototype value.)
 
+
 ### `Hebcal.HDate.prototype.lat`
 ### `Hebcal.HDate.prototype.long`
 
@@ -745,6 +746,9 @@ Number. The day of the month of the date.
 
 Number. The day of the week of the date. 0 is Sunday, as with `Date.prototype.getDay()`.
 
+### `Hebcal.HDate.prototype.getWeekDayName()`
+string. get the name of week day.
+
 ### `Hebcal.HDate.prototype.setFullYear(year)`
 
 Sets the year of the date. Returns the object it was called upon.
@@ -777,6 +781,22 @@ Return a number representing the number of days since December 31, 1 BCE, an "ab
 
 Return a string with the current day, month, and year. Takes a standard language options string.
 
+### `Hebcal.HDate.prototype.getDayName(o)`
+
+Return a string with the current day. Takes a standard language options string.
+
+### `Hebcal.HDate.prototype.getMonthName(o)`
+
+Return a string with the current month. Takes a standard language options string.
+
+### `Hebcal.HDate.prototype.getYearName(o)`
+
+Return a string with the current year. Takes a standard language options string.
+
+### `Hebcal.HDate.prototype.dateFormat(format,o)`
+
+Return a string with the current year. ,the first args the format string ('D' - for day, 'M' - month,'Y' - for year'), the second arg takes a standard language options string.
+
 ```js
 new Hebcal.HDate().toString() // 16 Adar I 5774
 new Hebcal.HDate(1,7,5769).toString() // 1 Tishrei 5769

src/common.js

@@ -64,15 +64,22 @@ exports.monthNames = [
 	monthNames.concat([["Adar 1", 0, "אדר א'"],["Adar 2", 0, "אדר ב'"],["Nisan", 0, "ניסן"]])
 ];
 
-exports.days = {
-	SUN: 0,
-	MON: 1,
-	TUE: 2,
-	WED: 3,
-	THU: 4,
-	FRI: 5,
-	SAT: 6
+
+exports.daysNames = {
+		0 : {'h' : 'ראשון','eng' : 'Sunday','varName' : 'SUN'} ,
+		1 : {'h' : 'שני','eng' : 'Monday','varName' : 'MON'} ,
+		2 : {'h' : 'שלישי','eng' : 'Tuesday','varName' : 'TUE'} ,
+		3 : {'h' : 'רביעי','eng' : 'Wednesday','varName' : 'WED'} ,
+		4 : {'h' : 'חמישי','eng' : 'Thursday','varName' : 'THU'} ,
+		5 : {'h' : 'שישי','eng' : 'Friday','varName' : 'FRI'} ,
+		6 : {'h' : 'שבת','eng' : 'Saturday','varName' : 'SAT'} ,
 };
+var daysVars = {};
+for(var i in this.daysNames){
+	daysVars[this.daysNames.varName] = i;
+}
+exports.days = daysVars;
+
 
 exports.LANG = function(str, opts){
 	return opts == 'h' && str[2] || (opts == 'a' && str[1] || str[0]);

src/hdate.js

@@ -287,18 +287,37 @@ prototype[abs] = function() {
 };
 
 prototype.toString = function(o) {
-	return c.LANG([this[getDate](), null, gematriya(this[getDate]())], o) + ' ' +
+	return this.getDayName(o) + ' ' +
 		this.getMonthName(o) + ' ' +
-		c.LANG([this[getFullYear](), null, gematriya(this[getFullYear]())], o);
+		this.getYearName(o);
+};
+
+prototype.getWeekDayName = function(o) {
+	let dayObj = c.daysNames[this.getDay()];
+	if (dayObj){
+		return c.daysNames[this.getDay()][o] ? c.daysNames[this.getDay()][o] : c.daysNames[this.getDay()]['eng'];
+	}
+	return "";
 };
 
 prototype.getMonthName = function(o) {
 	return c.LANG(c.monthNames[+this.isLeapYear()][this[getMonth]()], o);
 };
-
+prototype.getDayName = function(o) {
+	return c.LANG([this[getDate](), null, gematriya(this[getDate]())], o);
+};
+prototype.getYearName = function(o) {
+	return c.LANG([this[getFullYear](), null, gematriya(this[getFullYear]())], o);
+};
 prototype.setCity = function(city) {
 	return this.setLocation(cities.getCity(city));
 };
+prototype.dateFormat = function(format, o){
+	let dayMask = "D";
+	let monthMask = "M";
+	let yearMask = "Y";
+	return format.replace(dayMask, this.getDayName(o)).replace(monthMask, this.getMonthName(o)).replace(yearMask, this.getYearName(o));
+};
 
 prototype.setLocation = function(lat, lon) {
 	if (typeof lat == 'object' && !Array.isArray(lat)) {