Class: ZOpen::File

Inherits:
SimpleDelegator
  • Object
show all
Defined in:
lib/zopen.rb

Overview

A possible compressed file.

This class delegates all functions to its underlying IO-like object, which should provide the typical read/write methods. However, many compressed files to not allow random access, so methods like seek might not be available.

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(filename, mode = nil) {|File| ... } ⇒ File

Open file.

The only two open modes that are guaranteed to be supported are ‘r’ and ‘w’ for reading and writing, respectively.

If a code block is given the block is called with the new file as parameter and the file is closed when the block returns.

Yields:

  • (File) —

    this file



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# File 'lib/zopen.rb', line 115

def initialize(filename, mode=nil)
  super(openfile(filename, mode))
  if block_given?
    yield self
    close
  end
end

Class Method Details

.read(filename) ⇒ String

Return the content of a file.



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# File 'lib/zopen.rb', line 127

def self.read(filename)
  new(filename, 'r') { |f| return f.read }
end

.write(filename, text) ⇒ Object

Write a string to a file.



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# File 'lib/zopen.rb', line 135

def self.write(filename, text)
  new(filename, 'w') { |f| f.write text }
end