Class: Command

Inherits:
Hash
  • Object
show all
Defined in:
lib/base/command.rb

Overview

Command

execution of system commands

Keys

  • :input The input of the commands.

  • :timeout The timeout in seconds.

    a value of zero is to infinite timeout.
defaults to zero

  • :directory The working directory for the command.

    defaults to the current directory

  • :exit_code The exit code of the command

  • :output The output contains the stdout output of the command

  • :error The error contains stderr output of the command

  • :machine The name of the machine the command executed on

  • :user The user name

  • :start_time

  • :end_time

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(command) ⇒ Command

Returns a new instance of Command.



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# File 'lib/base/command.rb', line 31

def initialize command

   self[:input] = ''
	self[:timeout] = 0
	self[:directory] = ''
	self[:exit_code] = 0
	self[:output] = ''
	self[:error] = ''
	self[:machine] = ''
	self[:user] = ''
	self[:start_time] = nil
	self[:end_time] = nil

	if(command.kind_of?(String))
	  self[:input] = command
   end

   if(command.kind_of?(Hash))
     command.each{|k,v|self[k.to_sym]=v}
   end
end

Class Method Details

.dev_root ⇒ Object 



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# File 'lib/base/command.rb', line 167

def self.dev_root
  ["DEV_HOME","DEV_ROOT"].each {|v|
    return ENV[v].gsub('\\','/') unless ENV[v].nil?
  }
  dir=home
 return dir
end

.error(command) ⇒ Object 



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# File 'lib/base/command.rb', line 197

def self.error command
  cmd = Command.new(command)
  cmd[:ignore_failure]=true
  cmd[:quiet]=true
  cmd.execute
  cmd[:error]
end

.execute(command) ⇒ Object 



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# File 'lib/base/command.rb', line 175

def self.execute command
  cmd = Command.new(command)
  cmd.execute
  cmd[:exit_code]
end

.exit_code(command) ⇒ Object 



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# File 'lib/base/command.rb', line 181

def self.exit_code command
	cmd = Command.new(command)
	cmd[:ignore_failure]=true
  cmd[:quiet]=true
	cmd.execute
	cmd[:exit_code]
end

.home ⇒ Object 



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# File 'lib/base/command.rb', line 157

def self.home 
  ["USERPROFILE","HOME"].each {|v|
    return ENV[v].gsub('\\','/') unless ENV[v].nil?
  }
  dir="~"
  dir=ENV["HOME"] unless ENV["HOME"].nil?
  dir=ENV["USERPROFILE"].gsub('\\','/') unless ENV["USERPROFILE"].nil?
  return dir
end

.machine ⇒ Object 



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# File 'lib/base/command.rb', line 143

def self.machine
  if !ENV['COMPUTERNAME'].nil? 
return ENV['COMPUTERNAME']
	  end

  machine = `hostname`
  machine = machine.split('.')[0] if machine.include?('.')
	  return machine.strip
end

.output(command) ⇒ Object 



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# File 'lib/base/command.rb', line 189

def self.output command
	cmd = Command.new(command)
	cmd[:ignore_failure]=true
  cmd[:quiet]=true
	cmd.execute
	cmd[:output]
end

.user ⇒ Object 



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# File 'lib/base/command.rb', line 153

def self.user
  ENV['USER'].nil? ? ENV['USERNAME'] : ENV['USER']
end

Instance Method Details

#execute(value = nil) ⇒ Object 



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# File 'lib/base/command.rb', line 64

def execute value=nil

   if(!value.nil? && value.is_a?(Hash))
     value.each{|k,v|self[k]=v}
   end

	pwd=Dir.pwd
	self[:directory] = pwd if(!self.has_key?(:directory) || self[:directory].length==0)

   if(self[:timeout] > 0)
     puts "#{self[:input]} (#{self[:directory]}) timeout #{self[:timeout].to_s}" if(!quiet?)
   else
	  puts "#{self[:input]} (#{self[:directory]})" if(!quiet?)
   end

	self[:machine] = Command.machine
	self[:user] = Command.user

	self[:start_time]=Time.now
	timer=Timer.new

   Dir.chdir(self[:directory]) do
 		if self[:input].include?('<%') && self[:input].include?('%>')
 		  ruby = self[:input].gsub("<%","").gsub("%>","")

 		  begin
 		    self[:output]=eval(ruby)
 		  rescue 
 		  	self[:exit_code]=1
 		  	self[:error]="unable to eval(#{ruby})"
 		  end

 		  self[:elapsed] = timer.elapsed_str
 		  self[:end_time] = Time.now
 		else
 			begin
         if(self[:timeout] <= 0)
           self[:output],self[:error],status= Open3.capture3(self[:input])
           self[:exit_code]=status.to_i
   			  self[:elapsed] = timer.elapsed_str
   			  self[:end_time] = Time.now
         else
           require_relative 'timeout.rb'
           result=run_with_timeout(self[:directory],self[:input], self[:timeout],2)
           self[:output]=result[0]
           self[:error]=result[1]
           self[:exit_code]=result[2]

           self[:elapsed] = timer.elapsed_str
           self[:end_time] = Time.now
           
           if(timer.elapsed >= self[:timeout])
             self[:exit_code]=1 
             self[:error] = self[:error] + "timed out"
           end
         end
 			rescue Exception => e
 			  self[:elapsed] = timer.elapsed_str
 			  self[:end_time] = Time.now
 			  self[:error] = "Exception: " + e.to_s
 			  self[:exit_code]=1
 		  end
 		end
   end
      

   if(self[:exit_code] != 0)
     if(!quiet?)
   	  puts "exit_code=#{self[:exit_code]}"
   	  puts self[:output]
   	  puts self[:error]
     end
   	if(!self.has_key?(:ignore_failure) || !self[:ignore_failure])
   		raise "#{self[:input]} failed\n#{self[:output]}\n#{self[:error]}" 
   	end
   end
     
end

#getFormattedTimeSpan(timespan) ⇒ Object 



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# File 'lib/base/command.rb', line 205

def getFormattedTimeSpan timespan
  seconds = timespan
  seconds.to_s + " sec"
end

#open(filename = '') ⇒ Object 



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# File 'lib/base/command.rb', line 53

def open filename=''
  @filename=filename if filename.length > 0
  self.clear
  JSON.parse(IO.read(@filename)).each{|k,v| self[k.to_s]=v}
  update
end

#quiet? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/base/command.rb', line 60

def quiet?
  (self.has_key?(:quiet) && self[:quiet])
end

#summary ⇒ Object 



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# File 'lib/base/command.rb', line 210

def summary
  duration=""
  duration=getFormattedTimeSpan(self[:end_time]-self[:start_time]) + " - " if(!self[:end_time].nil?)
  duration + "#{self[:exit_code].to_s} #{self[:input]} (#{self[:directory]})"
end

#to_html ⇒ Object 



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# File 'lib/base/command.rb', line 216

def to_html
  if self[:exit_code] == 0
  [
  	'<div><table><tr><td width="20"></td><td><pre>',
  	self[:input],
  	'</pre></td></tr></table></div>'
  ].join
  else
  [
  	'<div><table><tr><td width="20"></td><td><pre>',
  	self[:input],
    '</pre><table><tr><td width="20"></td><td><table>',
    map { |k, v| ["<tr><td><strong>#{k}</strong></td>", v.respond_to?(:to_html) ? v.to_html : "<td><span><pre>#{v}</pre></span></td></tr>"] },
    '</table>',
    '</td></tr></table></td></tr></table></div>'
  ].join
  end
end