Sha256: b1896e700fba86c2147c01f8854aedcb810b492d90f811943827b932e38d4914
Contents?: true
Size: 1.39 KB
Versions: 8
Compression:
Stored size: 1.39 KB
Contents
module Timeliness
class FormatSet
attr_reader :formats, :regexp
def self.compile(formats)
new(formats).compile!
end
def initialize(formats)
@formats = formats
@formats_hash = {}
@match_indexes = {}
end
# Compiles the formats into one big regexp. Stores the index of where
# each format's capture values begin in the matchdata.
def compile!
regexp_string = ''
@formats.inject(0) { |index, format_string|
format = Format.new(format_string).compile!
@formats_hash[format_string] = format
@match_indexes[index] = format
regexp_string = "#{regexp_string}(#{format.regexp_string})|"
index + format.token_count + 1 # add one for wrapper capture
}
@regexp = %r[\A(?:#{regexp_string.chop})\z]
self
end
def match(string, format_string=nil)
format = single_format(format_string) if format_string
match_regexp = format && format.regexp || @regexp
if match_data = match_regexp.match(string)
index = match_data.captures.index(string)
start = index + 1
values = match_data.captures[start..(start+7)].compact
format ||= @match_indexes[index]
format.process(*values)
end
end
def single_format(format_string)
@formats_hash.fetch(format_string) { Format.new(format_string).compile! }
end
end
end
Version data entries
8 entries across 8 versions & 2 rubygems