Module: Custodian::Samplers::Utilities

Included in:
Sampler
Defined in:
lib/custodian/samplers/utilities.rb

Overview

Utility methods for samplers.

Class Method Summary collapse

Class Method Details

.directory_exists?(directory) ⇒ Boolean

Determine whether the given directory exists.

directory - A String describing the path to a directory.

Returns true if the directory exists, or false if it doesn’t.

Returns:

  • (Boolean) 


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# File 'lib/custodian/samplers/utilities.rb', line 21

def self.directory_exists?(directory)
  Pathname.new(directory).directory?
end

.file_exists?(file) ⇒ Boolean

Determine whether the given file exists.

file - A String describing the path to a file.

Returns true if the file exists, or false if it doesn’t.

Returns:

  • (Boolean) 


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# File 'lib/custodian/samplers/utilities.rb', line 30

def self.file_exists?(file)
  Pathname.new(file).file?
end

.program_exists?(program) ⇒ Boolean

Determine whether the given program exists.

program - A String describing the name of a program.

Returns true if the program exists, or false if it doesn’t.

Returns:

  • (Boolean) 


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# File 'lib/custodian/samplers/utilities.rb', line 12

def self.program_exists?(program)
  system "which #{command} > /dev/null 2>&1"
end