Class: Dev::SystemCall

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(cmd) ⇒ SystemCall

Returns a new instance of SystemCall.



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# File 'lib/dev/SystemCall.rb', line 10

def initialize(cmd)
  if(cmd.kind_of?(Hash))
    @command=cmd[:cmd]
    @dir=cmd[:dir] unless cmd[:dir].nil?
    @cache=cmd[:cache] unless[:cache].nil?
  else
    @command=cmd
  end
  execute(@command);
end

Instance Attribute Details

#cache ⇒ Object

Returns the value of attribute cache.



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# File 'lib/dev/SystemCall.rb', line 8

def cache
  @cache
end

#command ⇒ Object

Returns the value of attribute command.



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# File 'lib/dev/SystemCall.rb', line 8

def command
  @command
end

#dir ⇒ Object

Returns the value of attribute dir.



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# File 'lib/dev/SystemCall.rb', line 8

def dir
  @dir
end

#end_time ⇒ Object

Returns the value of attribute end_time.



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# File 'lib/dev/SystemCall.rb', line 8

def end_time
  @end_time
end

#error ⇒ Object

Returns the value of attribute error.



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# File 'lib/dev/SystemCall.rb', line 8

def error
  @error
end

#output ⇒ Object

Returns the value of attribute output.



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# File 'lib/dev/SystemCall.rb', line 8

def output
  @output
end

#start_time ⇒ Object

Returns the value of attribute start_time.



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# File 'lib/dev/SystemCall.rb', line 8

def start_time
  @start_time
end

#status ⇒ Object

Returns the value of attribute status.



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# File 'lib/dev/SystemCall.rb', line 8

def status
  @status
end

#timed_out ⇒ Object

Returns the value of attribute timed_out.



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# File 'lib/dev/SystemCall.rb', line 8

def timed_out
  @timed_out
end

Instance Method Details

#cache_name ⇒ Object 



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# File 'lib/dev/SystemCall.rb', line 23

def cache_name
  name = @dir+"/" + @command.gsub(" ","_").gsub("\\","-").gsub("/","-") unless @dir.nil?
  name = @command.gsub(" ","_").gsub("\\","-").gsub("/","-") if @dir.nil?
  return name
end

#elapsed ⇒ Object 



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# File 'lib/dev/SystemCall.rb', line 21

def elapsed; @end_time-@start_time; end

#execute(cmd) ⇒ Object 



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# File 'lib/dev/SystemCall.rb', line 73

def execute(cmd) 
  
  if !@cache.nil? && has_cache
    load_cache
    return
  end
  @start_time=Time.now
  filename=Dir.tmpdir + "/" + (0...8).map{65.+(rand(25)).chr}.join
  begin
      if(@dir.nil?)
        if(!@outfile.nil?)
          system("#{@command} > #{outfile}")
        else
          system("#{@command} >#{filename}.out 2>#{filename}.err")
        end
      else
        Dir.chdir(dir) do
          if(!@outfile.nil?)
            system("#{@command} > #{outfile}")
          else
            system("#{@command} >#{filename}.out 2>#{filename}.err")
          end
        end
      end
      if(File.exist?("#{filename}.out"))
        File.open("#{filename}.out",'r') {|f|
       @output = f.read
       f.close
        }
      end
      if(File.exist?("#{filename}.err"))
        File.open("#{filename}.err",'r') {|f|
       @error = f.read
       f.close
        }
      end
      @status=$?.exitstatus 
      @end_time=Time.now
  rescue
      puts "error executing ruby code"
  ensure
      write_cache if !@cache.nil?
      begin
       File.delete("#{filename}.out") if File.exists?("#{filename}.out")
       File.delete("#{filename}.err") if File.exists?("#{filename}.err")
      rescue
       puts "temp directory file was not cleaned up."
      end
  end
end

#get_hash ⇒ Object 



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# File 'lib/dev/SystemCall.rb', line 33

def get_hash
  hash = Hash.new()
  hash[:cmd]=@command
  hash[:dir]=@dir
  hash[:output]=@output
  hash[:error]=@error
  hash[:status]=@status
  hash[:start_time]=@start_time
  hash[:end_time]=@end_time
  hash[:timed_out]=@timed_out
  hash[:cache]=@cache
  return hash
end

#has_cache ⇒ Object 



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# File 'lib/dev/SystemCall.rb', line 29

def has_cache
  File.exist?(cache_name)
end

#load_cache ⇒ Object 



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# File 'lib/dev/SystemCall.rb', line 66

def load_cache
  file=File.open(cache_name,'rb')
  hash = Marshal.load file.read
  file.close
  set_hash hash
end

#puts_summary ⇒ Object 



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# File 'lib/dev/SystemCall.rb', line 124

def puts_summary
  if(@status != 0)
    summary =  "  [".foreground(:cyan) + "X".foreground(:red).bright + "]".foreground(:cyan) + " system(\"" + @command.foreground(:green) + "\") has exit status of " + @status.to_s
    summary += " dir: " + @dir unless @dir.nil?
    summary += " cache: true" unless @cache.nil?
    puts summary
    puts @output if !@output.nil?
    warn @error if !@error.nil?
    throw "exit status was " + @status.to_s
  else
    elapsed_str="[" + "%.0f" %(elapsed) + "s]"
    summary = "  [".foreground(:cyan) + "+".foreground(:green) + "]".foreground(:cyan) + " system(\"" + @command.foreground(:green) + "\") " + elapsed_str.foreground(:cyan) 
    summary += " dir: " + @dir unless @dir.nil?
    summary += " cache: true" unless @cache.nil?
    puts summary
  end
end

#set_hash(hash) ⇒ Object 



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# File 'lib/dev/SystemCall.rb', line 47

def set_hash(hash)
  @command=hash[:cmd] unless hash[:cmd].nil?
  @dir=hash[:dir] unless hash[:dir].nil?
  @output=hash[:output] unless hash[:output].nil?
  @error=hash[:error] unless hash[:error].nil?
  @status=hash[:status] unless hash[:status].nil?
  @start_time=hash[:start_time] unless hash[:start_time].nil?
  @end_time=hash[:end_time] unless hash[:end_time].nil?
  @timed_out=hash[:timed_out] unless hash[:timed_out].nil?
  @cache=hash[:cache] unless hash[:cache].nil?
end

#write_cache ⇒ Object 



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# File 'lib/dev/SystemCall.rb', line 59

def write_cache
  marshal_dump = Marshal.dump(get_hash)
  file=File.new(cache_name,'wb')
  file.write marshal_dump
  file.close
end