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#!/usr/bin/env ruby
require "pp"
require "parslet"
include Parslet
class CassParser < Parslet::Parser
root :doc
### Type segments
# rule(:hour) { hour_.as(:hour) }
# rule(:minute) { minute_.as(:minute) }
# rule(:second) { second_.as(:second) }
# rule(:year) { year_.as(:year) }
# rule(:month) { month_.as(:month) }
# rule(:day) { day_.as(:day) }
# rule(:time) { time_.as(:time) }
# rule(:local) { local_.as(:local) }
# rule(:offset) { offset_.as(:offset) }
# rule(:date) { date_.as(:date) }
rule(:datetime) { date >> str(" ") >> time }
rule(:daterange) { start >> str(" -") >> stop }
rule(:start) { datetime.as(:start) }
rule(:stop) { (str(" ") >> datetime).maybe.as(:stop) }
rule(:title) { title_.as(:title) }
rule(:doc) { line_.repeat }
### Combinatory segments
rule(:hour) { digit.repeat(2, 2) }
rule(:minute) { digit.repeat(2, 2) }
rule(:second) { digit.repeat(2, 2) }
rule(:time) { local >> offset }
rule(:date) { year >> str("-") >> month >> str("-") >> day }
rule(:year) { digit.repeat(4, 4) }
rule(:month) { digit.repeat(2, 2) }
rule(:day) { digit.repeat(2, 2) }
rule(:local) { hour >> str(":") >> minute >> str(":") >> second }
rule(:offset) { match("[zZ]") | tnoffset }
rule(:poffset) { str(" ") >> match("[+\-]") }
rule(:tnoffset) { poffset >> hour >> str(":").maybe >> minute }
rule(:title_) { text >> str(":") }
rule(:entry_) { title >> spaces >> daterange }
rule(:comment) { str("#") >> text }
rule(:line_) { comment | entry_ | newline }
### Primitive modes
rule(:digit) { match("[0-9]") }
rule(:text) { match("[a-zA-Z0-9 ]").repeat }
rule(:spaces) { match("[ \t]").repeat }
rule(:newline) { spaces.maybe >> str("\n") }
end
__END__
# Following is an example of what the `timebox` file format looks like
# Comment lines start with `#`, description lines start with ` `. Every
# other line is an entry, with the account first, followed by `:`, then
# time slice information in YYYY-MM-DD hh:mm:ss +TZ - ...
# An ongoing shift is allowed to have no "end" time information
Bobs Burger: 2019-07-21 21:00:00 +0200 - 2019-07-21 22:00:00 +0200
Learning how to not burn down the kitchen
Bobs Burger: 2019-07-21 21:00:00 +0200 - 2019-07-21 22:00:00 +0200
Serving some food
ACME Inc: 2019-07-21 21:00:00 +0200 - 2019-07-21 22:00:00 +0200
ACME Inc: 2019-07-21 21:00:00 +0200 - 2019-07-21 22:00:00 +0200
Bobs Burger: 2019-07-22 09:00:00 +0200 - 2019-07-22 15:00:00 +0200
Bobs Burger: 2019-07-22 21:00:00 +0200 -
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