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)
  return true if value.nil?
  return value !~ /\S/ if value.is_a?(String)
    
  value.respond_to?(:empty?) ? value.empty? : !value
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 25

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|
    result = yield(tmpname)
  ensure
    ::File.unlink(tmpname) if ::File.exist?(tmpname)
  end
  result
end