Class: Silhouette::Options

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Options

Returns a new instance of Options.



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# File 'lib/silhouette/setup.rb', line 5

def initialize
  @compress = true
  @follow_lines = false
  @file = "silhouette.out"
  @coverage = false
  @all = false
  @describe = false
  @location = false
end

Instance Attribute Details

#all ⇒ Object

Returns the value of attribute all.



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# File 'lib/silhouette/setup.rb', line 16

def all
  @all
end

#compress ⇒ Object

Returns the value of attribute compress.



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# File 'lib/silhouette/setup.rb', line 15

def compress
  @compress
end

#coverage ⇒ Object

Returns the value of attribute coverage.



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# File 'lib/silhouette/setup.rb', line 15

def coverage
  @coverage
end

#describe ⇒ Object

Returns the value of attribute describe.



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# File 'lib/silhouette/setup.rb', line 16

def describe
  @describe
end

#file ⇒ Object

Returns the value of attribute file.



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# File 'lib/silhouette/setup.rb', line 15

def file
  @file
end

#follow_lines ⇒ Object

Returns the value of attribute follow_lines.



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# File 'lib/silhouette/setup.rb', line 15

def follow_lines
  @follow_lines
end

#location ⇒ Object

Returns the value of attribute location.



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# File 'lib/silhouette/setup.rb', line 16

def location
  @location
end

Instance Method Details

#detect_compressor(file) ⇒ Object 



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# File 'lib/silhouette/setup.rb', line 18

def detect_compressor(file)
  `which bzip2`
  if $?.exitstatus == 0
    file.replace "#{file}.bz2"
    return "bzip2 -c > #{file}"
  end
  
  `which gzip`
  if $?.exitstatus == 0
    file.replace "#{file}.gz"
    return "gzip -c > #{file}"
  end
  return nil
end

#import_env ⇒ Object 



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# File 'lib/silhouette/setup.rb', line 33

def import_env
  if ENV["SILHOUETTE_FILE"]
    @file = ENV["SILHOUETTE_FILE"]
  end
  
  if ENV["NO_COMPRESS"]
    @compress = false
  end
  
  if ENV["FOLLOW_LINES"]
    @follow_lines = true
  end
  
  if ENV["COVERAGE"]
    @coverage = true
  end
  
  if ENV["ALL"]
    @all = true
  end
end

#setup_args ⇒ Object 



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# File 'lib/silhouette/setup.rb', line 55

def setup_args
  args = []

  gzip = nil
  
  output = @file
  
  unless IO === @file
    if @compress
      compress = detect_compressor(file)
      if compress
        gzip = IO.popen(compress, "w")
        output = gzip
      else
        # Couldn't auto detect a compressor.
      end
    end
  end
  
  args << output

  if @follow_lines
    args << true
  end

  if @coverage
    if @describe
      STDERR.puts "Generating coverage information only."
    end
    args << Silhouette::COVERAGE
  end

  if @all
    args << Silhouette::ALL
  end
  
  unless @location
    @location = @file
  end

  at_exit {
    Silhouette.stop_profile
    STDERR.puts "Flushed profile information to #{@location}"
  }
  
  return [args, @location]
end