Class: MossRuby

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

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(userid, server = "moss.stanford.edu", port = 7690) ⇒ MossRuby

Returns a new instance of MossRuby.



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# File 'lib/moss_ruby.rb', line 49

def initialize(userid, server = "moss.stanford.edu", port = 7690)
  @options = {
    max_matches:            10,
    directory_submission:   false,
    show_num_matches:       250,
    experimental_server:    false,
    comment:                "",
    language:               "c"
  }
  @server = server
  @port = port
  @userid = userid
end

Instance Attribute Details

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/moss_ruby.rb', line 33

def options
  @options
end

#port ⇒ Object

Returns the value of attribute port.



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# File 'lib/moss_ruby.rb', line 32

def port
  @port
end

#server ⇒ Object

Returns the value of attribute server.



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# File 'lib/moss_ruby.rb', line 31

def server
  @server
end

#userid ⇒ Object

Returns the value of attribute userid.



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# File 'lib/moss_ruby.rb', line 30

def userid
  @userid
end

Class Method Details

.add_base_file(hash, file) ⇒ Object 



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# File 'lib/moss_ruby.rb', line 39

def self.add_base_file ( hash, file )
  hash[:base_files] << file
  hash
end

.add_file(hash, file) ⇒ Object 



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# File 'lib/moss_ruby.rb', line 44

def self.add_file ( hash, file )
  hash[:files] << file
  hash
end

.empty_file_hash ⇒ Object 



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# File 'lib/moss_ruby.rb', line 35

def self.empty_file_hash
  { base_files: Array.new, files: Array.new }
end

Instance Method Details

#check(files_dict, callback = nil) ⇒ Object 



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# File 'lib/moss_ruby.rb', line 86

def check(files_dict, callback=nil)
  # Chech that the files_dict contains valid filenames
  files_dict[:base_files].each do |file_search|
    if Dir.glob(file_search, File::FNM_CASEFOLD).length == 0
      raise "Unable to locate base file(s) matching #{file_search}"
    end
  end

  if files_dict[:files].length == 0
    return
  end

  files_dict[:files].each do |file_search|
    if Dir.glob(file_search, File::FNM_CASEFOLD).length == 0
      raise "Unable to locate base file(s) matching #{file_search}"
    end
  end

  # Connect to the server
  callback.call('Connecting to MOSS') unless callback.nil?
  moss_server = TCPSocket.new @server, @port
  begin
    # Send header details
    callback.call(' - Sending configuration details') unless callback.nil?
    moss_server.write "moss #{@userid}\n"
    moss_server.write "directory #{@options[:directory_submission] ? 1 : 0 }\n"
    moss_server.write "X #{@options[:experimental_server] ? 1 : 0}\n"
    moss_server.write "maxmatches #{@options[:max_matches]}\n"
    moss_server.write "show #{@options[:show_num_matches]}\n"

    # Send language option
    moss_server.write "language #{@options[:language]}\n"

    callback.call(' - Checking language') unless callback.nil?
    line = moss_server.gets
    if line.strip() != "yes"
      moss_server.write "end\n"
      raise "Invalid language option."
    end

    count = 1
    processing = files_dict[:base_files]
    processing.each do |file_search|
      callback.call(" - Sending base files #{count} of #{processing.count} - #{file_search}") unless callback.nil?
      files = Dir.glob(file_search, File::FNM_CASEFOLD)
      file_count = 1
      files.each do |file|
        callback.call("   - Base file #{file_count} of #{files.count} - #{file}") unless callback.nil?
        upload_file moss_server, file
        file_count += 1
      end
      count += 1
    end

    idx = 1
    count = 1
    processing = files_dict[:files]
    processing.each do |file_search|
      callback.call(" - Sending files #{count} of #{processing.count} - #{file_search}") unless callback.nil?
      files = Dir.glob(file_search, File::FNM_CASEFOLD)
      file_count = 1
      files.each do |file|
        callback.call("   - File #{idx} = #{file_count} of #{files.count} - #{file}") unless callback.nil?
        upload_file moss_server, file, idx
        idx += 1
        file_count += 1
      end
    end

    callback.call(" - Waiting for server response") unless callback.nil?
    moss_server.write "query 0 #{@options[:comment]}\n"

    result = moss_server.gets

    moss_server.write "end\n"
    return result.strip()
  ensure
    moss_server.close
  end
end

#extract_results(uri, min_pct = 10, callback = nil) ⇒ Object 



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# File 'lib/moss_ruby.rb', line 167

def extract_results(uri, min_pct = 10, callback = nil)
  result = Array.new
  begin
    match = -1
    match_file = Array.new
    data = Array.new
    to_fetch = get_matches(uri, min_pct, callback)
    to_fetch.each do |id|
      match += 1
      callback.call("Checking match #{match + 1} (id #{id})") unless callback.nil?

      # read the two match files
      match_top = open("#{uri}/match#{id}-top.html").read

      callback.call(" - checking match #{match} percents") unless callback.nil?
      top = read_pcts match_top

      next if Integer(top[:pct0]) < min_pct && Integer(top[:pct1]) < min_pct

      callback.call(" - fetching #{match} html") unless callback.nil?

      match_file[0] = open("#{uri}/match#{id}-0.html").read
      match_file[1] = open("#{uri}/match#{id}-1.html").read

      # puts match_top
      # puts "---FILE0\n\n"
      # puts match_file[0]
      # puts "---FILE1\n\n"
      # puts match_file[1]

      callback.call(" - extracting data for #{match}") unless callback.nil?

      data[0] = read_data match_file[0]
      data[1] = read_data match_file[1]
      
      callback.call(" - adding #{match} result") unless callback.nil?
      result << [ 
        {
          filename:  data[0][:filename], 
          html:      strip_a("<PRE>#{data[0][:html]}</PRE>"),
          pct:     Integer(top[:pct0])
        },
        {
          filename:  data[1][:filename], 
          html:      strip_a("<PRE>#{data[1][:html]}</PRE>"),
          pct:     Integer(top[:pct1])            
        }
      ]
    end
  rescue OpenURI::HTTPError
    #end when there are no more matches -- indicated by 404 when accessing matches-n-top.html
  end

  result
end

#upload_file(moss_server, file, id = 0) ⇒ Object 



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# File 'lib/moss_ruby.rb', line 63

def upload_file (moss_server, file, id = 0)
  filename = file.strip.tap do |name|
    name.gsub! /[^\w\-\/.]/, '_'
  end

  content = IO.read(filename)
  size = content.length

  if size > 0 
    moss_server.write "file #{id} #{@options[:language]} #{size} #{file}\n"
    moss_server.write content
  end
  puts "File upload size #{filename} #{size}"
  begin
    line = moss_server.read_nonblock(100)
    puts "--------------------------------------------"
    puts " From MOSS: #{line}"
    puts "--------------------------------------------"
  rescue IO::WaitReadable
    #expected
  end
end