Class: Ccup::Exec

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

Constant Summary collapse 

<<-MSG

Usage
  ccup SUBMISSION_FILE INPUT_FOLDER OUTPUT_FILE ANSWER_KEY_FILE

Description
  Creates a temporary directory and copies SUBMISSION_FILE, the files inside
  INPUT_FOLDER, and ANSWER_KEY_FILE into it before compiling (if needed) and
  executing the SUBMISSION_FILE.

  Verification will be done by running "diff" on OUTPUT_FILE and ANSWER_KEY_FILE
  and putting the results into result.txt on the same folder. The running time
  will also be added to result.txt.

  The program ends with displaying the temporary folder.

MSG

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(argv) ⇒ Exec

Returns a new instance of Exec.



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# File 'lib/ccup/exec.rb', line 25

def initialize(argv)
  if argv.size != 4
    $stderr.puts BANNER
    @error = true
    return
  end
  @submission = argv[0]
  @input_folder = argv[1]
  @output_file = argv[2]
  @answer_key = argv[3]
  unless @error
    @submission_file = File.basename(@submission)
    validate
    @pl = determine_pl(File.extname(@submission))
  end
end

Instance Attribute Details

#answer_key ⇒ Object (readonly)

Returns the value of attribute answer_key.



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# File 'lib/ccup/exec.rb', line 7

def answer_key
  @answer_key
end

#error ⇒ Object (readonly)

Returns the value of attribute error.



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# File 'lib/ccup/exec.rb', line 7

def error
  @error
end

#input_folder ⇒ Object (readonly)

Returns the value of attribute input_folder.



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# File 'lib/ccup/exec.rb', line 7

def input_folder
  @input_folder
end

#output_file ⇒ Object (readonly)

Returns the value of attribute output_file.



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# File 'lib/ccup/exec.rb', line 7

def output_file
  @output_file
end

#submission ⇒ Object (readonly)

Returns the value of attribute submission.



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# File 'lib/ccup/exec.rb', line 7

def submission
  @submission
end

#temp_folder ⇒ Object (readonly)

Returns the value of attribute temp_folder.



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# File 'lib/ccup/exec.rb', line 7

def temp_folder
  @temp_folder
end

Instance Method Details

#compare ⇒ Object 



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# File 'lib/ccup/exec.rb', line 172

def compare
  @results_file.puts "Comparing output with answer key..."
  pid, stdin, stdout, stderr = Open4::popen4 "diff #{@output_file} #{File.basename @answer_key}"
  ignored, status = Process::waitpid2 pid

  @results_file.puts stdout.read.strip
end

#compile ⇒ Object 



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# File 'lib/ccup/exec.rb', line 112

def compile
  command = case @pl
  when :c
    "gcc -Wall #{@submission_file} -o #{root_name}"
  when :cpp
    "g++ -Wall #{@submission_file} -o #{root_name}"
  when :csharp
    "gmcs #{@submission_file}"
  when :java
    "javac #{@submission_file}"
  when :vbnet
    "vbnc #{@submission_file}"
  end
  if command
    @results_file.puts "Compiling submission..."
    pid, stdin, stdout, stderr = Open4::popen4 command
    ignored, status = Process::waitpid2 pid
    unless status.exitstatus == 0
      @error = true
      @results_file.puts "ERROR ENCOUNTERED:"
      @results_file.puts stderr.read.strip
    end
  end
end

#determine_pl(ext) ⇒ Object 



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# File 'lib/ccup/exec.rb', line 57

def determine_pl(ext)
  case ext
  when ".c"
    :c
  when ".cpp"
    :cpp
  when ".cs"
    :csharp
  when ".java"
    :java
  when ".php"
    :php
  when ".vb"
    :vbnet
  when ".rb"
    :ruby
  when ".py"
    :python
  when ".js"
    :js
  else
    @error = true
    $stderr.puts "Invalid submission"
  end
end

#prepare_temp_folder ⇒ Object 



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# File 'lib/ccup/exec.rb', line 101

def prepare_temp_folder
  temp_folder = Dir.mktmpdir
  FileUtils.cp @submission, temp_folder
  Dir.chdir @input_folder do
    FileUtils.cp Dir.entries(".").reject { |x| File.directory? x }, temp_folder
  end
  FileUtils.cp @answer_key, temp_folder
  `touch #{File.join temp_folder, @output_file}`
  temp_folder
end

#process ⇒ Object 



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# File 'lib/ccup/exec.rb', line 83

def process
  return if @error
  @temp_folder = prepare_temp_folder
  Dir.chdir @temp_folder do 
    @results_file = File.open("results.txt", "w")
    compile
    unless @error
      run
    end
    unless @error
      compare
    end
    @results_file.puts "Done."
    @results_file.close
  end
  return self
end

#root_name ⇒ Object 



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# File 'lib/ccup/exec.rb', line 168

def root_name
  File.basename(@submission_file, File.extname(@submission_file))
end

#run ⇒ Object 



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# File 'lib/ccup/exec.rb', line 137

def run
  command = case @pl
  when :c, :cpp
    "./#{root_name}"
  when :csharp, :vbnet
    "mono #{root_name}.exe"
  when :java
    "java #{root_name}"
  when :ruby
    "ruby #{@submission_file}"
  when :python
    "python #{@submission_file}"
  when :php
    "php #{@submission_file}"
  when :js
    "node #{@submission_file}"
  end
  @results_file.puts "Running submission..."
  start_at = Time.now
  pid, stdin, stdout, stderr = Open4::popen4 command
  ignored, status = Process::waitpid2 pid
  
  unless status.exitstatus == 0
    @error = true
    @results_file.puts "ERROR ENCOUNTERED:"
    @results_file.puts stderr.read.strip
  end
  #TODO check status
  @results_file.puts "Execution time: #{ Time.now - start_at } seconds"
end

#validate ⇒ Object 



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# File 'lib/ccup/exec.rb', line 42

def validate
  unless File.exist? @submission
    @error = true
    $stderr.puts "Can't find #{@submission}"
  end
  unless Dir.exist? @input_folder
    @error = true
    $stderr.puts "Can't find #{@input_folder}"
  end
  unless File.exist? @answer_key
    @error = true
    $stderr.puts "Can't find #{@answer_key}"
  end
end