173 lines
4.8 KiB
VimL
173 lines
4.8 KiB
VimL
" calutil.vim: some calendar utilities
|
|
" Author: Charles E. Campbell, Jr.
|
|
" with modifications by Herbert Sitz for VimOrganizer
|
|
" Date: Oct 08, 2008
|
|
" Version: 3b ASTRO-ONLY
|
|
" ---------------------------------------------------------------------
|
|
if exists("loaded_calutil")
|
|
finish
|
|
endif
|
|
let g:loaded_calutil= "v3b"
|
|
if v:version < 700
|
|
echohl WarningMsg
|
|
echo "***warning*** this version of calutil needs vim 7.0"
|
|
echohl Normal
|
|
finish
|
|
endif
|
|
|
|
function! calutil#dayname(date)
|
|
return calutil#DayOfWeek(split(a:date,'-')[0],split(a:date,'-')[1],split(a:date,'-')[2],2)
|
|
endfunction
|
|
function! calutil#dow(date)
|
|
return calutil#DayOfWeek(split(a:date,'-')[0],split(a:date,'-')[1],split(a:date,'-')[2],1)
|
|
endfunction
|
|
|
|
function! calutil#jul(date)
|
|
return calutil#Cal2Jul(split(a:date,'-')[0],split(a:date,'-')[1],split(a:date,'-')[2])
|
|
endfunction
|
|
|
|
function! calutil#cal(julian)
|
|
return calutil#Jul2Cal(a:julian)
|
|
endfunction
|
|
" ---------------------------------------------------------------------
|
|
" DayOfWeek: {{{1
|
|
" Usage : call calutil#DayOfWeek(y,m,d,[0|1|2])
|
|
" g:CalUtilDayOfWeek: if 0-> integer (default)
|
|
" 1-> 3-letter English abbreviation for name of day
|
|
" 2-> English name of day
|
|
" Returns
|
|
" g:CalUtilDayOfWeek
|
|
" ---------
|
|
" 1 : 0 1 2 3 4 5 6
|
|
" 2 : Mon Tue Wed Thu Fri Sat Sun
|
|
" 3 : Monday Tuesday Wednesday Thursday Friday Saturday Sunday
|
|
fun! calutil#DayOfWeek(y,m,d,...)
|
|
if a:0 > 0
|
|
let g:CalUtilDayOfWeek= a:1
|
|
endif
|
|
|
|
let z = calutil#Cal2Jul(a:y,a:m,a:d)
|
|
if z >= 0
|
|
let z= z%7
|
|
else
|
|
let z= 7 - (-z%7)
|
|
endif
|
|
|
|
if exists("g:CalUtilDayOfWeek")
|
|
if g:CalUtilDayOfWeek == 2
|
|
let dow0="Mon"
|
|
let dow1="Tue"
|
|
let dow2="Wed"
|
|
let dow3="Thu"
|
|
let dow4="Fri"
|
|
let dow5="Sat"
|
|
let dow6="Sun"
|
|
return dow{z}
|
|
elseif g:CalUtilDayOfWeek == 3
|
|
let dow0="Monday"
|
|
let dow1="Tuesday"
|
|
let dow2="Wednesday"
|
|
let dow3="Thursday"
|
|
let dow4="Friday"
|
|
let dow5="Saturday"
|
|
let dow6="Sunday"
|
|
return dow{z}
|
|
endif
|
|
endif
|
|
return z
|
|
endfun
|
|
|
|
" ---------------------------------------------------------------------
|
|
" calutil#Cal2Jul: convert a (after 9/14/1752) Gregorian calendar date to Julian day {{{1
|
|
" (on,before " ) Julian calendar date to Julian day
|
|
" (proleptic)
|
|
fun! calutil#Cal2Jul(y,m,d)
|
|
let year = a:y
|
|
let month= a:m
|
|
let day = a:d
|
|
|
|
" there is no year zero
|
|
if year == 0
|
|
let year= -1
|
|
elseif year < 0
|
|
let year= year + 1
|
|
endif
|
|
|
|
let julday= day - 32075 +
|
|
\ 1461*(year + 4800 + (month - 14)/12)/4 +
|
|
\ 367*(month - 2 - ((month - 14)/12)*12)/12 -
|
|
\ 3*((year + 4900 + (month - 14)/12)/100)/4
|
|
|
|
" 2361221 == Sep 2, 1752, which was followed immediately by
|
|
" Sep 14, 1752 (in England). Various countries
|
|
" adopted the Gregorian calendar at different times.
|
|
if julday <= 2361221
|
|
let a = (14-month)/12
|
|
let y = year + 4800 - a
|
|
let m = month + 12*a - 3
|
|
let julday = day + (153*m + 2)/5 + y*365 + y/4 - 32083
|
|
endif
|
|
return julday
|
|
endfun
|
|
|
|
" ---------------------------------------------------------------------
|
|
" calutil#Jul2Cal: convert a Julian day to a date: {{{1
|
|
" Default year/month/day
|
|
" julday,1 julday,"ymd" year/month/day
|
|
" julday,2 julday,"mdy" month/day/year
|
|
" julday,3 julday,"dmy" day/month/year
|
|
fun! calutil#Jul2Cal(julday,...)
|
|
let julday= a:julday
|
|
|
|
if julday <= 2361221
|
|
" Proleptic Julian Calendar:
|
|
" 2361210 == Sep 2, 1752, which was followed immediately by Sep 14, 1752
|
|
" in England
|
|
let c = julday + 32082
|
|
let d = (4*c + 3)/1461
|
|
let e = c - (1461*d)/4
|
|
let m = (5*e + 2)/153
|
|
let day = e - (153*m + 2)/5 + 1
|
|
let month = m + 3 - 12*(m/10)
|
|
let year = d - 4800 + m/10
|
|
if year <= 0
|
|
" proleptic Julian Calendar: there *is* no year 0!
|
|
let year= year - 1
|
|
endif
|
|
|
|
else
|
|
" Gregorian calendar
|
|
let t1 = julday + 68569
|
|
let t2 = 4*t1/146097
|
|
let t1 = t1 - (146097*t2 + 3)/4
|
|
let yr = 4000*(t1 + 1)/1461001
|
|
let t1 = t1 - (1461*yr/4 - 31)
|
|
let mo = 80*t1/2447
|
|
let day = (t1 - 2447*mo/80)
|
|
let t1 = mo/11
|
|
let month = (mo + 2 - 12*t1)
|
|
let year = (100*(t2 - 49) + yr + t1)
|
|
endif
|
|
|
|
let month = (month<10) ? '0' . month : month
|
|
let day = (day < 10) ? '0' . day : day
|
|
|
|
if a:0 > 0
|
|
if a:1 == 1 || a:1 =~ "ymd"
|
|
return year."-".month."/".day
|
|
elseif a:1 == 2 || a:1 =~ "mdy"
|
|
return month."-".day."/".year
|
|
elseif a:1 == 3 || a:1 =~ "dmy"
|
|
return day."-".month."/".year
|
|
else
|
|
return year."-".month."/".day
|
|
endif
|
|
else
|
|
return year."-".month."-".day
|
|
endif
|
|
endfun
|
|
|
|
" ---------------------------------------------------------------------
|
|
" vim: ts=4 fdm=marker
|
|
|