Class: Digest::CRC32

Inherits:

Class

• Object
• Class
• Digest::CRC32

Includes:

Instance

Defined in:

lib/rake/helpers/digest.rb

Instance Method Summary

• #finish ⇒ Object
• #hexdigest_to_digest(h) ⇒ Object
• #initialize ⇒ CRC32 constructor

  A new instance of CRC32.

• #reset ⇒ Object
• #update(str) ⇒ Object

Constructor Details

#initialize ⇒ CRC32

Returns a new instance of CRC32.

# File 'lib/rake/helpers/digest.rb', line 13

def initialize
    reset
end

Instance Method Details

#finish ⇒ Object

# File 'lib/rake/helpers/digest.rb', line 21

def finish
    @crc32.to_s
end

#hexdigest_to_digest(h) ⇒ Object

# File 'lib/rake/helpers/digest.rb', line 25

def hexdigest_to_digest(h)
    h.unpack('a2' * (h.size / 2)).collect { |i| i.hex.chr }.join
end

#reset ⇒ Object

# File 'lib/rake/helpers/digest.rb', line 17

def reset
    @crc32 = 0
end

#update(str) ⇒ Object

# File 'lib/rake/helpers/digest.rb', line 9

def update(str)
    @crc32 = Zlib.crc32(str, @crc32)
end