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module Chronic
class Repeater < Tag
# Scan an Array of Token objects and apply any necessary Repeater
# tags to each token.
#
# tokens - An Array of tokens to scan.
# options - The Hash of options specified in Chronic::parse.
#
# Returns an Array of tokens.
def self.scan(tokens, options)
tokens.each do |token|
if t = scan_for_season_names(token, options) then token.tag(t); next end
if t = scan_for_month_names(token, options) then token.tag(t); next end
if t = scan_for_day_names(token, options) then token.tag(t); next end
if t = scan_for_day_portions(token, options) then token.tag(t); next end
if t = scan_for_times(token, options) then token.tag(t); next end
if t = scan_for_units(token, options) then token.tag(t); next end
end
end
# token - The Token object we want to scan.
#
# Returns a new Repeater object.
def self.scan_for_season_names(token, options = {})
scan_for token, RepeaterSeasonName,
{
/^springs?$/ => :spring,
/^summers?$/ => :summer,
/^(autumn)|(fall)s?$/ => :autumn,
/^winters?$/ => :winter
}, options
end
# token - The Token object we want to scan.
#
# Returns a new Repeater object.
def self.scan_for_month_names(token, options = {})
scan_for token, RepeaterMonthName,
{
/^jan[:\.]?(uary)?$/ => :january,
/^feb[:\.]?(ruary)?$/ => :february,
/^mar[:\.]?(ch)?$/ => :march,
/^apr[:\.]?(il)?$/ => :april,
/^may$/ => :may,
/^jun[:\.]?e?$/ => :june,
/^jul[:\.]?y?$/ => :july,
/^aug[:\.]?(ust)?$/ => :august,
/^sep[:\.]?(t[:\.]?|tember)?$/ => :september,
/^oct[:\.]?(ober)?$/ => :october,
/^nov[:\.]?(ember)?$/ => :november,
/^dec[:\.]?(ember)?$/ => :december
}, options
end
# token - The Token object we want to scan.
#
# Returns a new Repeater object.
def self.scan_for_day_names(token, options = {})
scan_for token, RepeaterDayName,
{
/^m[ou]n(day)?$/ => :monday,
/^t(ue|eu|oo|u|)s?(day)?$/ => :tuesday,
/^we(d|dnes|nds|nns)(day)?$/ => :wednesday,
/^th(u|ur|urs|ers)(day)?$/ => :thursday,
/^fr[iy](day)?$/ => :friday,
/^sat(t?[ue]rday)?$/ => :saturday,
/^su[nm](day)?$/ => :sunday
}, options
end
# token - The Token object we want to scan.
#
# Returns a new Repeater object.
def self.scan_for_day_portions(token, options = {})
scan_for token, RepeaterDayPortion,
{
/^ams?$/ => :am,
/^pms?$/ => :pm,
/^mornings?$/ => :morning,
/^afternoons?$/ => :afternoon,
/^evenings?$/ => :evening,
/^(night|nite)s?$/ => :night
}, options
end
# token - The Token object we want to scan.
#
# Returns a new Repeater object.
def self.scan_for_times(token, options = {})
scan_for token, RepeaterTime, /^\d{1,2}(:?\d{1,2})?([\.:]?\d{1,2}([\.:]\d{1,6})?)?$/, options
end
# token - The Token object we want to scan.
#
# Returns a new Repeater object.
def self.scan_for_units(token, options = {})
{
/^years?$/ => :year,
/^seasons?$/ => :season,
/^months?$/ => :month,
/^fortnights?$/ => :fortnight,
/^weeks?$/ => :week,
/^weekends?$/ => :weekend,
/^(week|business)days?$/ => :weekday,
/^days?$/ => :day,
/^hrs?$/ => :hour,
/^hours?$/ => :hour,
/^mins?$/ => :minute,
/^minutes?$/ => :minute,
/^secs?$/ => :second,
/^seconds?$/ => :second
}.each do |item, symbol|
if item =~ token.word
klass_name = 'Repeater' + symbol.to_s.capitalize
klass = Chronic.const_get(klass_name)
return klass.new(symbol, options)
end
end
return nil
end
def <=>(other)
width <=> other.width
end
# returns the width (in seconds or months) of this repeatable.
def width
raise("Repeater#width must be overridden in subclasses")
end
# returns the next occurance of this repeatable.
def next(pointer)
raise("Start point must be set before calling #next") unless @now
end
def this(pointer)
raise("Start point must be set before calling #this") unless @now
end
def to_s
'repeater'
end
end
end
|
