class Chef::Digester

Public Class Methods

checksum_for_file(*args) click to toggle source
# File lib/chef/digester.rb, line 29
def self.checksum_for_file(*args)
  instance.checksum_for_file(*args)
end
generate_md5_checksum_for_file(*args) click to toggle source
# File lib/chef/digester.rb, line 49
def self.generate_md5_checksum_for_file(*args)
  instance.generate_md5_checksum_for_file(*args)
end

Public Instance Methods

checksum_for_file(file) click to toggle source
# File lib/chef/digester.rb, line 37
def checksum_for_file(file)
  generate_checksum(file)
end
generate_checksum(file) click to toggle source
# File lib/chef/digester.rb, line 41
def generate_checksum(file)
  if file.is_a?(StringIO)
    checksum_io(file, OpenSSL::Digest.new("SHA256"))
  else
    checksum_file(file, OpenSSL::Digest.new("SHA256"))
  end
end
generate_md5_checksum(io) click to toggle source
# File lib/chef/digester.rb, line 57
def generate_md5_checksum(io)
  checksum_io(io, ::Digest::MD5.new)
end
generate_md5_checksum_for_file(file) click to toggle source
# File lib/chef/digester.rb, line 53
def generate_md5_checksum_for_file(file)
  checksum_file(file, ::Digest::MD5.new)
end
validate_checksum(*args) click to toggle source
# File lib/chef/digester.rb, line 33
def validate_checksum(*args)
  self.class.validate_checksum(*args)
end

Private Instance Methods

checksum_file(file, digest) click to toggle source
# File lib/chef/digester.rb, line 63
def checksum_file(file, digest)
  File.open(file, "rb") { |f| checksum_io(f, digest) }
end
checksum_io(io, digest) click to toggle source
# File lib/chef/digester.rb, line 67
def checksum_io(io, digest)
  while chunk = io.read(1024 * 8)
    digest.update(chunk)
  end
  digest.hexdigest
end