Module: Utils::MD5

Defined in:
lib/utils/md5.rb

Overview

MD5 module for computing MD5 hash digests of files.

This module provides functionality for calculating MD5 hash digests of files using the Digest::MD5 library. It offers a convenient interface for computing hashes while handling file reading in chunks to optimize memory usage during the hashing process.

Class Attribute Summary collapse

Class Method Summary collapse

Class Attribute Details

.buffer_size ⇒ Integer

The buffer_size accessor method provides read and write access to the buffer_size instance variable.

Returns:

  • (Integer) —

    the current buffer size value



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# File 'lib/utils/md5.rb', line 16

def buffer_size
  @buffer_size
end

Class Method Details

.md5(filename) ⇒ String

Computes the MD5 hash digest for a given file.

This method reads the entire contents of the specified file in binary mode and calculates its MD5 hash value. It uses a configurable buffer size for reading the file in chunks to optimize memory usage during the hashing process.

Parameters:

  • filename (String) —

    the path to the file for which to compute the MD5 hash

Returns:

  • (String) —

    the hexadecimal representation of the MD5 hash digest



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# File 'lib/utils/md5.rb', line 32

def md5(filename)
  digest = Digest::MD5.new
  digest.reset
  File.open(filename, 'rb') do |f|
    until f.eof?
      digest << f.read(MD5.buffer_size)
    end
  end
  digest.hexdigest
end