class Anyhash

# File lib/anyhash.rb, line 22
def self.gost(message)
  new(message).hash(Anyhash::Algorithms::GOST)
end

# File lib/anyhash.rb, line 26
def self.gost_cryptopro(message)
  new(message).hash(Anyhash::Algorithms::GOST_CRYPTOPRO)
end

# File lib/anyhash.rb, line 10
def initialize(message)
  @message = message
end

# File lib/anyhash.rb, line 14
def hash(type)
  create_tempfile
  write_message_to_tempfile
  hash = calculate_tempfile_hash_for(type)
  delete_tempfile
  hash
end

# File lib/anyhash.rb, line 41
def calculate_tempfile_hash_for(type)
  hash = `rhash --#{type} #{@tempfile.path}`
  hash.gsub(@tempfile.path, '').strip
end

# File lib/anyhash.rb, line 32
def create_tempfile
  @tempfile = Tempfile.new('message_for_rhash')
end

# File lib/anyhash.rb, line 46
def delete_tempfile
  @tempfile.close
  @tempfile.unlink
end

# File lib/anyhash.rb, line 36
def write_message_to_tempfile
  @tempfile.write(@message)
  @tempfile.rewind
end