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module Grader
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# This singleton class holds basic configurations for grader. When
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# running in each mode, grader uses resources from different
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# directories and outputs differently. Usually the attributes name
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# are descriptive; below we explain more on each attributes.
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class Configuration
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# Rails' environment: "development", "production"
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attr_accessor :rails_env
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# Grader looks for problem [prob] in problem_dir/[prob], and store
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# execution results for submission [x] of user [u] in directory
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# user_result_dir/[u]/[x]
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attr_accessor :problems_dir
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attr_accessor :user_result_dir
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# If report_grader=true, the grader would add a row in model
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# GraderProcess. It would report itself with grader_hostname and
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# process id.
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attr_accessor :report_grader
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attr_accessor :grader_hostname
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# If talkative=true, grader would report status to console. If
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# logging=true, grader would report status to a log file located
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# in log_dir, in a file name mode.options.pid. TODO: defined
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# log file naming.
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attr_accessor :talkative
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attr_accessor :logging
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attr_accessor :log_dir
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# These are directories related to the test interface.
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attr_accessor :test_request_input_base_dir
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attr_accessor :test_request_output_base_dir
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attr_accessor :test_request_problem_templates_dir
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# Comment received from the grading script will be filtered
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# through Configuration#report_comment. How this method behave
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# depends on this option; right now only two formats, :short and
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# :long
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attr_accessor :comment_report_style
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def report_comment(comment)
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case comment_report_style
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when :short
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if comment.chomp =~ /^[\[\]P]+$/ # all P's
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'passed'
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elsif comment.chomp =~ /[Cc]ompil.*[Ee]rror/
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'compilation error'
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else
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'failed'
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end
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when :full
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comment.chomp
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end
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end
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# Codes for singleton
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private_class_method :new
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@@instance = nil
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def self.get_instance
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if @@instance==nil
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@@instance = new
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end
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@@instance
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end
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private
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def initialize
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@talkative = false
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@log_file = nil
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@report_grader = false
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@grader_hostname = `hostname`.chomp
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@rails_env = 'development'
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@comment_report_style = :full
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end
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end
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end
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