Thanks Mike! I have something similar but limited in scope, where I can type in yesterday or tomorrow ot today and get the respective date. I will incorporate your method for all my date fields! Unfortunately there are a TON of line wrapping errors introduced by your pasted code. I'll have to sus it all out.
Bob S > On Oct 16, 2017, at 11:16 , Mike Kerner via use-livecode > <use-livecode@lists.runrev.com> wrote: > > Way back in the day, Quicken allowed all kinds of shenanigans with dates > It allowed a variety of delimiters > It allowed pseudo-dates: > 20 -- 20th of the current month > 10/20 -- 10/20/current year > + -- tomorrow > m -- first of this month > h -- last of this month > etc. > > I really like this, because it makes it much easier than trying to look at > a calendar all the time, so I wrote my own version, that expands on the > idea: > > function quickenDate what > /* > Returns current date if sent an empty string > Returns empty if can't figure out what "what" is supposed to be > > Delimiter can be ".", "/", ";", <SP> or comma > Date can be in m/d/y, m/d, or just d format > Also accepts (upper or lower case) > T - (T)oday > M - First day of (M)onth > H - Last day of mont(H) > W - First day of (W)eek > K - Last day of wee(K) > Y - First day of (Y)ear > R - Last day of yea(R) > + - tomorrow > +x, where x is an integer, x days from today > - - yesterday > -x where x is an integer, x days before today > */ > > if what is empty then return the short date # you got a better idea? > > put the short date into currentDateInDateItems > convert currentDateInDateItems to dateItems #y,m,d,h(24 > format),m,s,daynum (0 sun, 6 sat) > put item 1 of currentDateInDateItems into currentYear > put item 2 of currentDateInDateItems into currentMonth > > if what="T" then #today > put the short date into what > else if what="Y" then #first day of year > put "01/01/"¤tYear into what > else if what="R" then #last day of year > put "12/31/"¤tYear into what > else if what="M" then # first of month > put currentMonth&slash&"01"&slash¤tYear into what > else if what="H" then # last day of month > if currentMonth is 12 then > put "12/31/"¤tYear into what > else #not 12, # the easiest way to do this math is to get midnight on > the first day of the following month and then move back a second and let LC > do the math on what the date is > # since otherwise we have to figure out the 30 days > have september, blah, blah, blah, and leap years, blah, blah, blah. > add 1 to item 2 of currentDateInDateItems #next month > put "0" into item 3 of currentDateInDateItems #I love dateItems. > How to figure out the last day of this month? Go to first day of next > month and subtract 1, (making it a 0, e.g. 5/0/17 is 4/30/17) > put currentDateInDateItems into what > end if #currentMonth is 12 > else if what is "W" then #first day of week #sunday is first day of week > put last item of currentDateInDateItems into dayNumber > subtract (dayNumber-1) from item 3 of currentDateInDateItems > put currentDateInDateItems into what > else if what is "K" then #last day of week #saturday is last day of week > put last item of currentDateInDateItems into dayNumber > add (7-dayNumber) to item 3 of currentDateInDateItems > put currentDateInDateItems into what > convert what to short date > else if first char of what is "+" then #at least tomorrow, but if > a nuber follows, then x days after today > delete first char of what # "+" > if what is empty then put 1 into what #"+" is tomorrow, i.e. +1 > add what to item 3 of currentDateInDateItems > put currentDateInDateItems into what > else if first char of what is "-" then # at least yesterday, or if a > number follows, then x days before today > delete first char of what #"-" > if what is empty then put 1 into what #"-" is yesterday, i.e. -1 > subtract what from item 3 of currentDateInDateItems > put currentDateInDateItems into what > else # a date-ish string could be a date only or a month and a date, or > a month and a date and a year > #<determine the delimiter, if there is one. It could be a comma, a > slash, a period, or a space> > if what contains ";" then replace ";" with slash in what > if what contains space then replace space with slash in what > if what contains "." then replace "." with slash in what > if what contains comma then replace comma with slash in what > # and, if what doesn't contain any of those, comma will be the > delimiter > #</determine the delimiter, if there is one. It could be a comma, a > slash, a period, or a space> > > set the itemDelimiter to slash > > #<date format can be D, M/D, or M/D/Y, so test and add> > if the number of items in what is not 3 then put slash¤tYear > after what # try adding a year, first > if the number of items in what is not 3 then put currentMonth&slash > before what # try adding the month, next > #</date format can be D, M/D, or M/D/Y, so test and add> > > if what is not a date then put empty into what #error > end if #what="T" > > convert what to short date > return what > end quickenDate > > -- > On the first day, God created the heavens and the Earth > On the second day, God created the oceans. > On the third day, God put the animals on hold for a few hours, > and did a little diving. > And God said, "This is good." > _______________________________________________ > use-livecode mailing list > use-livecode@lists.runrev.com > Please visit this url to subscribe, unsubscribe and manage your subscription > preferences: > http://lists.runrev.com/mailman/listinfo/use-livecode _______________________________________________ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
