Module: IOStreams::Utils

Defined in:
lib/io_streams/utils.rb

Defined Under Namespace

Classes: URI

Constant Summary collapse

MAX_TEMP_FILE_NAME_ATTEMPTS = 
5

Class Method Summary collapse

Class Method Details

.blank?(value) ⇒ Boolean

Helper method: Returns [true|false] if a value is blank?

Returns:

  • (Boolean) 


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# File 'lib/io_streams/utils.rb', line 15

def self.blank?(value)
  if value.nil?
    true
  elsif value.is_a?(String)
    value !~ /\S/
  else
    value.respond_to?(:empty?) ? value.empty? : !value
  end
end

.load_soft_dependency(gem_name, stream_type, require_name = gem_name) ⇒ Object

Lazy load dependent gem so that it remains a soft dependency.



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# File 'lib/io_streams/utils.rb', line 8

def self.load_soft_dependency(gem_name, stream_type, require_name = gem_name)
  require require_name
rescue LoadError => e
  raise(LoadError, "Please install the gem '#{gem_name}' to support #{stream_type}. #{e.message}")
end

.temp_file_name(basename, extension = "") ⇒ Object

Yields the path to a temporary file_name.

File is deleted upon completion if present.



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# File 'lib/io_streams/utils.rb', line 28

def self.temp_file_name(basename, extension = "")
  result = nil
  ::Dir::Tmpname.create([basename, extension], IOStreams.temp_dir, max_try: MAX_TEMP_FILE_NAME_ATTEMPTS) do |tmpname|
    begin
      result = yield(tmpname)
    ensure
      ::File.unlink(tmpname) if ::File.exist?(tmpname)
    end
  end
  result
end