class X12::Segment
Implements a segment containing fields or composites
Public Instance Methods
each() { |res| ... }
click to toggle source
provides loopong through multiple segments within the loop
# File lib/x12/segment.rb, line 107 def each res = self.to_a 0.upto(res.length - 1) do |x| yield res[x] end end
find_field(str)
click to toggle source
Finds a field in the segment. Returns EMPTY if not found.
# File lib/x12/segment.rb, line 87 def find_field(str) #puts "Finding field [#{str}] in #{self.class} #{name}" # If there is such a field to begin with field_num = nil self.nodes.each_index{|i| field_num = i if str == self.nodes[i].name } return EMPTY if field_num.nil? #puts field_num # Parse the segment if not parsed already unless @fields @fields = self.to_s.chop.split(Regexp.new(Regexp.escape(field_separator))) self.nodes.each_index{|i| self.nodes[i].content = @fields[i+1] } end #puts self.nodes[field_num].inspect return self.nodes[field_num] end
parse(str)
click to toggle source
Parses this segment out of a string, puts the match into value, returns the rest of the string - nil if cannot parse
# File lib/x12/segment.rb, line 34 def parse(str) s = str #puts "Parsing segment #{name} from #{s} with regexp [#{regexp.source}]" m = regexp.match(s) #puts "Matched #{m ? m[0] : 'nothing'}" return nil unless m s = m.post_match self.parsed_str = m[0] s = do_repeats(s) #puts "Parsed segment "+self.inspect return s end
regexp()
click to toggle source
Returns a regexp that matches this particular segment
# File lib/x12/segment.rb, line 67 def regexp unless @regexp if self.nodes.find{|i| i.type =~ /^".+"$/ } # It's a very special regexp if there are constant fields re_str = self.nodes.inject("^#{name}#{Regexp.escape(field_separator)}"){|s, i| field_re = i.simple_regexp(field_separator, segment_separator)+Regexp.escape(field_separator)+'?' field_re = "(#{field_re})?" unless i.required s+field_re } + Regexp.escape(segment_separator) @regexp = Regexp.new(re_str) else # Simple match @regexp = Regexp.new("^#{name}#{Regexp.escape(field_separator)}[^#{Regexp.escape(segment_separator)}]*#{Regexp.escape(segment_separator)}") end #puts sprintf("%s %p", name, @regexp) end @regexp end
render()
click to toggle source
Render all components of this segment as string suitable for EDI
# File lib/x12/segment.rb, line 51 def render self.to_a.inject(''){|repeat_str, i| if i.repeats.begin < 1 and !i.has_content? # Skip optional empty segments repeat_str else # Have to render no matter how empty repeat_str += i.name+i.nodes.reverse.inject(''){|nodes_str, j| field = j.render (j.required or nodes_str != '' or field != '') ? field_separator+field+nodes_str : nodes_str } + segment_separator end } end