Class: Tus::Checksum

Inherits:
Object
  • Object
show all
Defined in:
lib/tus/checksum.rb

Overview

Generates various checksums for given IO objects. The following algorithms are supported:

  • SHA1

  • SHA256

  • SHA384

  • SHA512

  • MD5

  • CRC32

Constant Summary collapse

CHUNK_SIZE = 
16*1024

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(algorithm) ⇒ Checksum

Returns a new instance of Checksum.



22
23
24
 
# File 'lib/tus/checksum.rb', line 22

def initialize(algorithm)
  @algorithm = algorithm
end

Instance Attribute Details

#algorithm ⇒ Object (readonly)

Returns the value of attribute algorithm.



16
17
18
 
# File 'lib/tus/checksum.rb', line 16

def algorithm
  @algorithm
end

Class Method Details

.generate(algorithm, input) ⇒ Object 



18
19
20
 
# File 'lib/tus/checksum.rb', line 18

def self.generate(algorithm, input)
  new(algorithm).generate(input)
end

Instance Method Details

#generate(io) ⇒ Object 



30
31
32
33
34
 
# File 'lib/tus/checksum.rb', line 30

def generate(io)
  hash = send("generate_#{algorithm}", io)
  io.rewind
  hash
end

#match?(checksum, io) ⇒ Boolean

Returns:

  • (Boolean) 


26
27
28
 
# File 'lib/tus/checksum.rb', line 26

def match?(checksum, io)
  generate(io) == checksum
end