Class: Rack::Lint::Wrapper::InputWrapper

Inherits:
Object
  • Object
show all
Defined in:
lib/rack/lint.rb

Instance Method Summary collapse

Constructor Details

#initialize(input) ⇒ InputWrapper

Returns a new instance of InputWrapper.



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# File 'lib/rack/lint.rb', line 452

def initialize(input)
  @input = input
end

Instance Method Details

#close(*args) ⇒ Object

  • close can be called on the input stream to indicate that any remaining input is not needed.



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# File 'lib/rack/lint.rb', line 529

def close(*args)
  @input.close(*args)
end

#each(*args) ⇒ Object

  • each must be called without arguments and only yield Strings.

Raises:



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# File 'lib/rack/lint.rb', line 517

def each(*args)
  raise LintError, "rack.input#each called with arguments" unless args.size == 0
  @input.each { |line|
    unless line.kind_of? String
      raise LintError, "rack.input#each didn't yield a String"
    end
    yield line
  }
end

#gets(*args) ⇒ Object

  • gets must be called without arguments and return a string, or nil on EOF.

Raises:



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# File 'lib/rack/lint.rb', line 458

def gets(*args)
  raise LintError, "rack.input#gets called with arguments" unless args.size == 0
  v = @input.gets
  unless v.nil? or v.kind_of? String
    raise LintError, "rack.input#gets didn't return a String"
  end
  v
end

#read(*args) ⇒ Object

  • read behaves like IO#read. Its signature is read([length, [buffer]]).

    If given, length must be a non-negative Integer (>= 0) or nil, and buffer must be a String and may not be nil.

    If length is given and not nil, then this method reads at most length bytes from the input stream.

    If length is not given or nil, then this method reads all data until EOF.

    When EOF is reached, this method returns nil if length is given and not nil, or “” if length is not given or is nil.

    If buffer is given, then the read data will be placed into buffer instead of a newly created String object.



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# File 'lib/rack/lint.rb', line 484

def read(*args)
  unless args.size <= 2
    raise LintError, "rack.input#read called with too many arguments"
  end
  if args.size >= 1
    unless args.first.kind_of?(Integer) || args.first.nil?
      raise LintError, "rack.input#read called with non-integer and non-nil length"
    end
    unless args.first.nil? || args.first >= 0
      raise LintError, "rack.input#read called with a negative length"
    end
  end
  if args.size >= 2
    unless args[1].kind_of?(String)
      raise LintError, "rack.input#read called with non-String buffer"
    end
  end

  v = @input.read(*args)

  unless v.nil? or v.kind_of? String
    raise LintError, "rack.input#read didn't return nil or a String"
  end
  if args[0].nil?
    unless !v.nil?
      raise LintError, "rack.input#read(nil) returned nil on EOF"
    end
  end

  v
end