! See http://factorcode.org/license.txt for BSD license.
USING: accessors arrays classes.tuple combinators
combinators.short-circuit kernel locals math math.functions
-math.order sequences summary system vocabs vocabs.loader ;
+math.order sequences summary system vocabs vocabs.loader
+assocs ;
IN: calendar
HOOK: gmt-offset os ( -- hours minutes seconds )
M: integer month-name check-month 1 - month-names nth ;
M: timestamp month-name month>> 1 - month-names nth ;
-CONSTANT: month-abbreviations
+ERROR: not-a-month-abbreviation string ;
+
+CONSTANT: month-abbreviations-array
{
"Jan" "Feb" "Mar" "Apr" "May" "Jun"
"Jul" "Aug" "Sep" "Oct" "Nov" "Dec"
}
-: month-abbreviation ( n -- string )
- check-month 1 - month-abbreviations nth ;
+CONSTANT: month-abbreviations-hash
+ H{
+ { "Jan" 1 } { "Feb" 2 } { "Mar" 3 }
+ { "Apr" 4 } { "May" 5 } { "Jun" 6 }
+ { "Jul" 7 } { "Aug" 8 } { "Sep" 9 }
+ { "Oct" 10 } { "Nov" 11 } { "Dec" 12 }
+ }
+
+: n>month-abbreviation ( n -- string )
+ check-month 1 - month-abbreviations-array nth ;
+
+: month-abbreviation>n ( string -- n )
+ month-abbreviations-hash ?at
+ [ not-a-month-abbreviation ] unless ;
CONSTANT: day-counts { 0 31 28 31 30 31 30 31 31 30 31 30 31 }
: day-abbreviation2 ( n -- string )
day-abbreviations2 nth ; inline
-CONSTANT: day-abbreviations3
+CONSTANT: day-abbreviations3-array
{ "Sun" "Mon" "Tue" "Wed" "Thu" "Fri" "Sat" }
-: day-abbreviation3 ( n -- string )
- day-abbreviations3 nth ; inline
+CONSTANT: day-abbreviations3-hash
+ H{
+ { "Sun" 0 } { "Mon" 1 } { "Tue" 2 } { "Wed" 3 }
+ { "Thu" 4 } { "Fri" 5 } { "Sat" 6 }
+ }
CONSTANT: average-month 30+5/12
CONSTANT: months-per-year 12
: last-friday-of-month ( timestamp -- new-timestamp ) 5 last-day-this-month ;
: last-saturday-of-month ( timestamp -- new-timestamp ) 6 last-day-this-month ;
+CONSTANT: day-predicates-array
+ { sunday? monday? tuesday? wednesday? thursday? friday? saturday? }
+
+: n>day-predicate ( string -- predicate )
+ day-predicates-array nth ;
+
+: n>day-abbreviation3 ( n -- string )
+ day-abbreviations3-array nth ; inline
+
+ERROR: not-a-day-abbreviation string ;
+
+: day-abbreviation3>n ( string -- n )
+ day-abbreviations3-hash ?at [ not-a-day-abbreviation ] unless ; inline
+
+: day-abbreviation3>predicate ( string -- predicate )
+ day-abbreviation3>n day-predicates-array nth ;
+
: beginning-of-week ( timestamp -- new-timestamp )
midnight sunday ;