Class: IsccLib::DataHasher

Inherits:

Object

• Object
• IsccLib::DataHasher

Defined in:

lib/iscc_lib.rb

Overview

Streaming Data-Code generator (reopens native class).

Incrementally processes data with content-defined chunking and MinHash to produce results identical to gen_data_code_v0.

Examples:

hasher = IsccLib::DataHasher.new
hasher.update(chunk1).update(chunk2)
result = hasher.finalize(bits: 64)

Instance Method Summary

• #finalize(bits: 64) ⇒ DataCodeResult

  Consume the hasher and produce a Data-Code result.

• #update(data) ⇒ self

  Push binary data into the hasher.

Instance Method Details

#finalize(bits: 64) ⇒ DataCodeResult

Consume the hasher and produce a Data-Code result.

Parameters:

• bits (Integer) (defaults to: 64) —

  bit length (default: 64)

Returns:

• (DataCodeResult) —

  hash with iscc

Raises:

• (RuntimeError) —

  if called more than once

# File 'lib/iscc_lib.rb', line 202

def finalize(bits: 64)
  DataCodeResult[_finalize(bits)]
end

#update(data) ⇒ self

Push binary data into the hasher.

Parameters:

• data (String) —

  binary data

Returns:

• (self) —

  for method chaining

# File 'lib/iscc_lib.rb', line 192

def update(data)
  _update(data)
  self
end