Class: Jdepp::Parser

Inherits:
Object
  • Object
show all
Defined in:
lib/jdepp/parser.rb

Instance Method Summary collapse

Constructor Details

#initialize(locations = {}, feedback = Feedback.new) ⇒ Parser

Returns a new instance of Parser.



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# File 'lib/jdepp/parser.rb', line 9

def initialize(locations={}, feedback=Feedback.new)
   @locations = locations
   @feedback = feedback
end

Instance Method Details

#parse(file_list) ⇒ Object 



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# File 'lib/jdepp/parser.rb', line 14

def parse(file_list)

   def recurse(accum, path)
      re = /^\/\/\s*@requires\s*"(([^"\n:]+):)?([^"\n]+)"\s*$/
      lines = File.readlines(path.to_s)
      lines.reduce(accum) do
         |a, ln|
         matches = re.match(ln)
         if matches != nil then
            if matches[1].nil? then
               rel = Pathname.new(path.dirname + matches[3])
            else
               loc_alias = matches[2]
               if @locations.key?(loc_alias) then
                  rel = @locations[loc_alias].join(matches[3])
               else
                  # todo: convert path to relative path.
                  raise "i don't recognize the location alias \"#{loc_alias}\" encountered in <#{path}>."
               end
            end
            if not rel.exist? then
               raise "i can't find #{rel.to_s} (required by #{path})."
            end
            abs = rel.realdirpath
            if not a.key?(abs) then
               @feedback.puts_if(:verbose) {"i matched #{rel} (#{abs})"}
               recurse(a, rel)
               a[abs] = rel
            else
               @feedback.puts_if(:verbose) {"i am ignoring a duplicate directive for #{rel} (#{abs})"}
            end
         end
         a
      end
   end

   # todo: default to returning relative paths; absolute on request.
   (file_list.reduce({}) do
      |accum, s|
      recurse(accum, Pathname.new(s))
      accum
   end).values.map {|p| p.to_s}
end

#recurse(accum, path) ⇒ Object 



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# File 'lib/jdepp/parser.rb', line 16

def recurse(accum, path)
   re = /^\/\/\s*@requires\s*"(([^"\n:]+):)?([^"\n]+)"\s*$/
   lines = File.readlines(path.to_s)
   lines.reduce(accum) do
      |a, ln|
      matches = re.match(ln)
      if matches != nil then
         if matches[1].nil? then
            rel = Pathname.new(path.dirname + matches[3])
         else
            loc_alias = matches[2]
            if @locations.key?(loc_alias) then
               rel = @locations[loc_alias].join(matches[3])
            else
               # todo: convert path to relative path.
               raise "i don't recognize the location alias \"#{loc_alias}\" encountered in <#{path}>."
            end
         end
         if not rel.exist? then
            raise "i can't find #{rel.to_s} (required by #{path})."
         end
         abs = rel.realdirpath
         if not a.key?(abs) then
            @feedback.puts_if(:verbose) {"i matched #{rel} (#{abs})"}
            recurse(a, rel)
            a[abs] = rel
         else
            @feedback.puts_if(:verbose) {"i am ignoring a duplicate directive for #{rel} (#{abs})"}
         end
      end
      a
   end
end