Mac Date error

[john renfrew]

Would anyone know why the following code works correctly on Windows but not on Mac???

The CORRECT answer for today (24/11/2010) is 47, not 48 as returned on macOS, as according to ISO8601

Same on 10.5.8 and 10.6.4

// DKSwebWeek ( fm_date )

// 11_11_24 JR

// v1.1

// returns filenames for current week of diary

// also prev && end to insert into html



import java.text.SimpleDateFormat



def lPad = {it ->

st = '00' + it.toString()

return st.substring(st.length()-2, st.length())

}



dfm = new SimpleDateFormat("dd/MM/yyyy")

cal=Calendar.getInstance()

cal.setTime( dfm.parse(fm_date) )

now = cal.get(Calendar.WEEK_OF_YEAR)

cal.add(Calendar.DAY_OF_MONTH,-7)

prev = cal.get(Calendar.WEEK_OF_YEAR)

cal.add(Calendar.DAY_OF_MONTH,14)

next = cal.get(Calendar.WEEK_OF_YEAR)

prev = 'diary' + lPad(prev) + '.shtml'

next = 'diary' + lPad(next) + '.shtml'

return 'diary' + lPad(now) + '.shtml'

Edited November 25, 2010 by Guest

[john renfrew]

No further on with why the get(Calendar.WEEK_OF_YEAR) returns differently on Mac and PC

But Tim Yates at StackOverflow provided a bit of a grooviness to this, which does work correctly

// DKSwebWeek ( fm_date )

// 11_11_24 JR

// v1.3

// returns filenames for current week of diary

// also prev && end to insert into html



Calendar.getInstance().with { cal ->

  // We want ISO Week numbers

  cal.firstDayOfWeek = MONDAY

  cal.minimalDaysInFirstWeek = 4

  cal.setTime(Date.parse('dd/MM/yyyy', fm_date ))

  //following line will only work in later groovy version

  //now = cal[ WEEK_OF_YEAR ]

  now = cal.get(Calendar.WEEK_OF_YEAR)

  cal.add(Calendar.DAY_OF_MONTH,-7)

  prev = cal.get(Calendar.WEEK_OF_YEAR)

  cal.add(Calendar.DAY_OF_MONTH,14)

  next = cal.get(Calendar.WEEK_OF_YEAR)

}

prev = "diary${"$prev".padLeft( 2, '0' )}.shtml"

next = "diary${"$next".padLeft( 2, '0' )}.shtml"

return "diary${"$now".padLeft( 2, '0' )}.shtml"

Edited November 25, 2010 by Guest