(function () {
var $D = Date;
var flattenAndCompact = function (ax) {
var rx = [];
for (var i = 0; i < ax.length; i++) {
if (ax[i] instanceof Array) {
rx = rx.concat(flattenAndCompact(ax[i]));
} else {
if (ax[i]) {
rx.push(ax[i]);
}
}
}
return rx;
};
var parseMeridian = function () {
if (this.meridian && (this.hour || this.hour === 0)) {
if (this.meridian === "a" && this.hour > 11 && Date.Config.strict24hr){
throw "Invalid hour and meridian combination";
} else if (this.meridian === "p" && this.hour < 12 && Date.Config.strict24hr){
throw "Invalid hour and meridian combination";
} else if (this.meridian === "p" && this.hour < 12) {
this.hour = this.hour + 12;
} else if (this.meridian === "a" && this.hour === 12) {
this.hour = 0;
}
}
};
var setDefaults = function () {
var now = new Date();
if ((this.hour || this.minute) && (!this.month && !this.year && !this.day)) {
this.day = now.getDate();
}
if (!this.year) {
this.year = now.getFullYear();
}
if (!this.month && this.month !== 0) {
this.month = now.getMonth();
}
if (!this.day) {
this.day = 1;
}
if (!this.hour) {
this.hour = 0;
}
if (!this.minute) {
this.minute = 0;
}
if (!this.second) {
this.second = 0;
}
if (!this.millisecond) {
this.millisecond = 0;
}
};
var finishUtils = {
getToday: function () {
if (this.now || "hour minute second".indexOf(this.unit) !== -1) {
return new Date();
} else {
return $D.today();
}
},
setDaysFromWeekday: function (today, orient){
var gap;
orient = orient || 1;
this.unit = "day";
gap = ($D.getDayNumberFromName(this.weekday) - today.getDay());
this.days = gap ? ((gap + (orient * 7)) % 7) : (orient * 7);
return this;
},
setMonthsFromMonth: function (today, orient) {
var gap;
orient = orient || 1;
this.unit = "month";
gap = (this.month - today.getMonth());
this.months = gap ? ((gap + (orient * 12)) % 12) : (orient * 12);
this.month = null;
return this;
},
setDMYFromWeekday: function () {
var d = Date[this.weekday]();
this.day = d.getDate();
if (!this.month) {
this.month = d.getMonth();
}
this.year = d.getFullYear();
return this;
},
setUnitValue: function (orient) {
if (!this.value && this.operator && this.operator !== null && this[this.unit + "s"] && this[this.unit + "s"] !== null) {
this[this.unit + "s"] = this[this.unit + "s"] + ((this.operator === "add") ? 1 : -1) + (this.value||0) * orient;
} else if (this[this.unit + "s"] == null || this.operator != null) {
if (!this.value) {
this.value = 1;
}
this[this.unit + "s"] = this.value * orient;
}
},
generateDateFromWeeks: function () {
var weekday = (this.weekday !== undefined) ? this.weekday : "today";
var d = Date[weekday]().addWeeks(this.weeks);
if (this.now) {
d.setTimeToNow();
}
return d;
}
};
$D.Translator = {
hour: function (s) {
return function () {
this.hour = Number(s);
};
},
minute: function (s) {
return function () {
this.minute = Number(s);
};
},
second: function (s) {
return function () {
this.second = Number(s);
};
},
/* for ss.s format */
secondAndMillisecond: function (s) {
return function () {
var mx = s.match(/^([0-5][0-9])\.([0-9]{1,3})/);
this.second = Number(mx[1]);
this.millisecond = Number(mx[2]);
};
},
meridian: function (s) {
return function () {
this.meridian = s.slice(0, 1).toLowerCase();
};
},
timezone: function (s) {
return function () {
var n = s.replace(/[^\d\+\-]/g, "");
if (n.length) {
this.timezoneOffset = Number(n);
} else {
this.timezone = s.toLowerCase();
}
};
},
day: function (x) {
var s = x[0];
return function () {
this.day = Number(s.match(/\d+/)[0]);
if (this.day < 1) {
throw "invalid day";
}
};
},
month: function (s) {
return function () {
this.month = (s.length === 3) ? "jan feb mar apr may jun jul aug sep oct nov dec".indexOf(s)/4 : Number(s) - 1;
if (this.month < 0) {
throw "invalid month";
}
};
},
year: function (s) {
return function () {
var n = Number(s);
this.year = ((s.length > 2) ? n :
(n + (((n + 2000) < Date.CultureInfo.twoDigitYearMax) ? 2000 : 1900)));
};
},
rday: function (s) {
return function () {
switch (s) {
case "yesterday":
this.days = -1;
break;
case "tomorrow":
this.days = 1;
break;
case "today":
this.days = 0;
break;
case "now":
this.days = 0;
this.now = true;
break;
}
};
},
finishExact: function (x) {
var d;
x = (x instanceof Array) ? x : [x];
for (var i = 0 ; i < x.length ; i++) {
if (x[i]) {
x[i].call(this);
}
}
setDefaults.call(this);
parseMeridian.call(this);
if (this.day > $D.getDaysInMonth(this.year, this.month)) {
throw new RangeError(this.day + " is not a valid value for days.");
}
d = new Date(this.year, this.month, this.day, this.hour, this.minute, this.second, this.millisecond);
if (this.year < 100) {
d.setFullYear(this.year); // means years less that 100 are process correctly. JS will parse it otherwise as 1900-1999.
}
if (this.timezone) {
d.set({ timezone: this.timezone });
} else if (this.timezoneOffset) {
d.set({ timezoneOffset: this.timezoneOffset });
}
return d;
},
finish: function (x) {
var today, expression, orient, temp;
x = (x instanceof Array) ? flattenAndCompact(x) : [ x ];
if (x.length === 0) {
return null;
}
for (var i = 0 ; i < x.length ; i++) {
if (typeof x[i] === "function") {
x[i].call(this);
}
}
if (this.now && !this.unit && !this.operator) {
return new Date();
} else {
today = finishUtils.getToday.call(this);
}
expression = !!(this.days && this.days !== null || this.orient || this.operator);
orient = ((this.orient === "past" || this.operator === "subtract") ? -1 : 1);
if (this.month && this.unit === "week") {
this.value = this.month + 1;
delete this.month;
delete this.day;
}
if ((this.month || this.month === 0) && "year day hour minute second".indexOf(this.unit) !== -1) {
if (!this.value) {
this.value = this.month + 1;
}
this.month = null;
expression = true;
}
if (!expression && this.weekday && !this.day && !this.days) {
finishUtils.setDMYFromWeekday.call(this);
}
if (expression && this.weekday && this.unit !== "month" && this.unit !== "week") {
finishUtils.setDaysFromWeekday.call(this, today, orient);
}
if (this.weekday && this.unit !== "week" && !this.day && !this.days) {
temp = Date[this.weekday]();
this.day = temp.getDate();
if (temp.getMonth() !== today.getMonth()) {
this.month = temp.getMonth();
}
}
if (this.month && this.unit === "day" && this.operator) {
if (!this.value) {
this.value = (this.month + 1);
}
this.month = null;
}
if (this.value != null && this.month != null && this.year != null) {
this.day = this.value * 1;
}
if (this.month && !this.day && this.value) {
today.set({ day: this.value * 1 });
if (!expression) {
this.day = this.value * 1;
}
}
if (!this.month && this.value && this.unit === "month" && !this.now) {
this.month = this.value;
expression = true;
}
if (expression && (this.month || this.month === 0) && this.unit !== "year") {
finishUtils.setMonthsFromMonth.call(this, today, orient);
}
if (!this.unit) {
this.unit = "day";
}
finishUtils.setUnitValue.call(this, orient);
parseMeridian.call(this);
if ((this.month || this.month === 0) && !this.day) {
this.day = 1;
}
if (!this.orient && !this.operator && this.unit === "week" && this.value && !this.day && !this.month) {
return Date.today().setWeek(this.value);
}
if (this.unit === "week" && this.weeks && !this.day && !this.month) {
return finishUtils.generateDateFromWeeks.call(this);
}
if (expression && this.timezone && this.day && this.days) {
this.day = this.days;
}
if (expression){
today.add(this);
} else {
today.set(this);
}
if (this.timezone) {
this.timezone = this.timezone.toUpperCase();
var offset = $D.getTimezoneOffset(this.timezone);
var timezone;
if (today.hasDaylightSavingTime()) {
// lets check that we're being sane with timezone setting
timezone = $D.getTimezoneAbbreviation(offset, today.isDaylightSavingTime());
if (timezone !== this.timezone) {
// bugger, we're in a place where things like EST vs EDT matters.
if (today.isDaylightSavingTime()) {
today.addHours(-1);
} else {
today.addHours(1);
}
}
}
today.setTimezoneOffset(offset);
}
return today;
}
};
}());
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