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HackMyResume/src/core/fluent-date.js

78 lines
2.3 KiB
JavaScript

###*
The HackMyResume date representation.
@license MIT. See LICENSE.md for details.
@module core/fluent-date
###
moment = require 'moment'
require('../utils/string')
###*
Create a FluentDate from a string or Moment date object. There are a few date
formats to be aware of here.
1. The words "Present" and "Now", referring to the current date
2. The default "YYYY-MM-DD" format used in JSON Resume ("2015-02-10")
3. Year-and-month only ("2015-04")
4. Year-only "YYYY" ("2015")
5. The friendly HackMyResume "mmm YYYY" format ("Mar 2015" or "Dec 2008")
6. Empty dates ("", " ")
7. Any other date format that Moment.js can parse from
Note: Moment can transparently parse all or most of these, without requiring us
to specify a date format...but for maximum parsing safety and to avoid Moment
deprecation warnings, it's recommended to either a) explicitly specify the date
format or b) use an ISO format. For clarity, we handle these cases explicitly.
@class FluentDate
###
class FluentDate
constructor: (dt) ->
@rep = this.fmt dt
@isCurrent: (dt) ->
!dt || (String.is(dt) and /^(present|now|current)$/.test(dt))
months = {}
abbr = {}
moment.months().forEach((m,idx) -> months[m.toLowerCase()] = idx+1 )
moment.monthsShort().forEach((m,idx) -> abbr[m.toLowerCase()]=idx+1 )
abbr.sept = 9
module.exports = FluentDate
FluentDate.fmt = ( dt, throws ) ->
throws = (throws == undefined || throws == null) || throws
if typeof dt == 'string' or dt instanceof String
dt = dt.toLowerCase().trim()
if /^(present|now|current)$/.test(dt) # "Present", "Now"
return moment()
else if /^\D+\s+\d{4}$/.test(dt) # "Mar 2015"
parts = dt.split(' ');
month = (months[parts[0]] || abbr[parts[0]]);
temp = parts[1] + '-' + (month < 10 ? '0' + month : month.toString());
return moment temp, 'YYYY-MM'
else if /^\d{4}-\d{1,2}$/.test(dt) # "2015-03", "1998-4"
return moment dt, 'YYYY-MM'
else if /^\s*\d{4}\s*$/.test(dt) # "2015"
return moment dt, 'YYYY'
else if /^\s*$/.test(dt) # "", " "
return moment()
else
mt = moment dt
if mt.isValid()
return mt
if throws
throw 'Invalid date format encountered.'
return null
else
if !dt
return moment()
else if dt.isValid and dt.isValid()
return dt
if throws
throw 'Unknown date object encountered.'
return null