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Contents
module Quandl
module Format
class Abstract
class Node
cattr_accessor :syntax, instance_reader: true
self.syntax = {
comment: '#',
end_of_node: '-',
}
attr_accessor :block, :line, :lines
def initialize(*args)
# options
opts = args.extract_options!.symbolize_keys!
# assign options
self.line = opts[:line].to_i if opts[:line].present?
self.block = opts[:block]
end
def add(value)
increment_line
# clean the value
value = clean(value)
# does this mark the end of the node?
return close if end_of_node?(value)
# handle the new line
add_to_lines(value)
# onwards
self
end
def close
# pass the node to the block
block.call(self) unless lines.blank?
# return a new node
self.class.new( line: line, block: block )
end
def line
@line ||= 0
end
def lines
@lines ||= []
end
def as_json
YAML.load(lines.join("\n"))
end
protected
def increment_line
self.line += 1
end
def add_to_lines(value)
# ignore comments
return false if comment?(value)
# otherwise append the value
lines << value
end
def end_of_node?(value)
syntax_matches?( :end_of_node, value )
end
def comment?(value)
value.blank? || syntax_matches?(:comment, value)
end
def syntax_matches?(key, value)
syn = syntax[key]
value.to_s[ 0..(syn.length) ] == syn
end
def clean(value)
value.to_s.strip.rstrip
end
end
end
end
end
Version data entries
6 entries across 6 versions & 1 rubygems