1 ! Copyright (C) 2018 John Benediktsson
2 ! See http://factorcode.org/license.txt for BSD license
4 USING: accessors arrays ascii assocs calendar calendar.english
5 calendar.private combinators io kernel literals locals math
6 math.order math.parser math.ranges sequences splitting ;
10 :: parse-value ( value quot: ( value -- value' ) seq -- value )
12 { [ CHAR: , over member? ] [
13 "," split [ quot seq parse-value ] map concat ] }
14 { [ dup "*" = ] [ drop seq ] }
15 { [ CHAR: / over member? ] [
16 "/" split1 [ quot seq parse-value 0 over length 1 - ] dip
17 string>number <range> swap nths ] }
18 { [ CHAR: - over member? ] [
19 "-" split1 quot bi@ [a,b] ] }
21 } cond ; inline recursive
23 : parse-day ( str -- n )
24 dup string>number [ ] [
25 >lower $[ day-abbreviations3 [ >lower ] map ] index
28 : parse-month ( str -- n )
29 dup string>number [ ] [
30 >lower $[ month-abbreviations [ >lower ] map ] index
33 TUPLE: cronentry minutes hours days months days-of-week command ;
36 { "@yearly" "0 0 1 1 *" }
37 { "@annually" "0 0 1 1 *" }
38 { "@monthly" "0 0 1 * *" }
39 { "@weekly" "0 0 * * 0" }
40 { "@daily" "0 0 * * *" }
41 { "@midnight" "0 0 * * *" }
42 { "@hourly" "0 * * * *" }
45 : parse-cronentry ( entry -- cronentry )
46 " " split1 [ aliases ?at drop ] dip " " glue
47 " " split1 " " split1 " " split1 " " split1 " " split1 {
48 [ [ string>number ] T{ range f 0 60 1 } parse-value ]
49 [ [ string>number ] T{ range f 0 24 1 } parse-value ]
50 [ [ string>number ] T{ range f 0 31 1 } parse-value ]
51 [ [ parse-month ] T{ range f 0 12 1 } parse-value ]
52 [ [ parse-day ] T{ range f 0 7 1 } parse-value ]
54 } spread cronentry boa ;
56 :: next-time-after ( cronentry timestamp -- )
58 timestamp month>> :> month
59 cronentry months>> [ month >= ] find nip [
60 dup month = [ drop f ] [ timestamp month<< t ] if
62 timestamp cronentry months>> first >>month 1 +year
63 ] if* [ cronentry timestamp next-time-after ] when
65 timestamp hour>> :> hour
66 cronentry hours>> [ hour >= ] find nip [
67 dup hour = [ drop f ] [
68 timestamp hour<< 0 timestamp minute<< t
71 timestamp cronentry hours>> first >>hour 1 +day
72 ] if* [ cronentry timestamp next-time-after ] when
74 timestamp minute>> :> minute
75 cronentry minutes>> [ minute >= ] find nip [
76 dup minute = [ drop f ] [ timestamp minute<< t ] if
78 timestamp cronentry minutes>> first >>minute 1 +hour
79 ] if* [ cronentry timestamp next-time-after ] when
81 timestamp day-of-week :> weekday
82 cronentry days-of-week>> [ weekday >= ] find nip [
83 cronentry days-of-week>> first 7 +
86 timestamp day>> :> day
87 cronentry days>> [ day >= ] find nip [
90 timestamp 1 months time+
91 cronentry days>> first >>day
92 day-of-year timestamp day-of-year -
96 timestamp swap +day drop
97 cronentry timestamp next-time-after
100 : next-time ( cronentry -- timestamp )
101 now 0 >>second [ next-time-after ] keep ;
103 : parse-crontab ( -- entries )
104 lines [ [ f ] [ parse-cronentry ] if-empty ] map harvest ;