84 lines
1.7 KiB
Ruby
84 lines
1.7 KiB
Ruby
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module Liquid
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module Utils
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def self.slice_collection(collection, from, to)
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if (from != 0 || !to.nil?) && collection.respond_to?(:load_slice)
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collection.load_slice(from, to)
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else
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slice_collection_using_each(collection, from, to)
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end
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end
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def self.slice_collection_using_each(collection, from, to)
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segments = []
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index = 0
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# Maintains Ruby 1.8.7 String#each behaviour on 1.9
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if collection.is_a?(String)
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return collection.empty? ? [] : [collection]
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end
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return [] unless collection.respond_to?(:each)
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collection.each do |item|
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if to && to <= index
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break
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end
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if from <= index
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segments << item
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end
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index += 1
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end
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segments
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end
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def self.to_integer(num)
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return num if num.is_a?(Integer)
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num = num.to_s
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begin
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Integer(num)
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rescue ::ArgumentError
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raise Liquid::ArgumentError, "invalid integer"
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end
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end
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def self.to_number(obj)
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case obj
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when Float
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BigDecimal(obj.to_s)
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when Numeric
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obj
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when String
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(obj.strip =~ /\A-?\d+\.\d+\z/) ? BigDecimal(obj) : obj.to_i
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else
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if obj.respond_to?(:to_number)
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obj.to_number
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else
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0
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end
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end
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end
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def self.to_date(obj)
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return obj if obj.respond_to?(:strftime)
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if obj.is_a?(String)
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return nil if obj.empty?
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obj = obj.downcase
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end
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case obj
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when 'now'.freeze, 'today'.freeze
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Time.now
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when /\A\d+\z/, Integer
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Time.at(obj.to_i)
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when String
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Time.parse(obj)
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end
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rescue ::ArgumentError
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nil
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end
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end
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end
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