NEWS

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zstdlite 2024-04-16

• Added zstd_info() to return information about a compressed data stream.

zstdlite 2024-04-15

• zstd_serialize(), zstd_unserialize(), zstd_compress() and zstd_decompress() now support connections.
• Add zstdfile() - a connection with for reading/writing of zstd compressed data

zstdlite 2024-03-29

• Update to zstd library v1.5.6

zstdlite 2024-03-14

• Fixes for CRAN
  • Clarify copyright holder in DESCRIPTION
  • Add 'cran-comments.md'
  • Clarify need for static linking

zstdlite 2024-03-10

• Fixes for CRAN
  • Added explicit notice of copyright by Facebook

zstdlite 2024-03-09

• Release to CRAN

• Add zstd_version()
• zstd_train_dict_compress() now accepts a list of strings (in addition to a list of raw vectors)

zstdlite 2024-03-04

• Streaming now optional for file I/O for zstd_serialize()/zstd_unserialize()
  • Use option use_file_streaming = TRUE to enable

zstdlite 2024-03-02

• Added optional streaming for zstd_compress()/zstd_decompress()
  • Use option use_file_streaming = TRUE to enable

zstdlite 2024-03-01

• Tidy handling of options and initialisation of compression/decompression contexts
• Option to include checksum and validate

zstdlite 2024-02-27

• zstd_decompress() now optionally returns the decompressed buffer as a string
• zstd_compress() will compress both raw vectors and strings

zstdlite 2024-02-26

• Add support for training dictionaries
  • zstd_train_dict_compress() if training for zstd_compress()
  • zstd_train_dict_serialize() if training for zstd_serialize()
  • zstd_dict_id() to get the dict ID

zstdlite 2024-02-25

• Refactor R interface to just:
  • zstd_cctx(), zstd_dctx()
  • zstd_compress(), zstd_decompress()
  • zstd_serialize(), zstd_unserialize()
    • Will use streaming if working from files

• Streaming serialization/unserialisation with compressed files:
  • zstd_serialize_stream_file()
  • zstd_unserialize_stream_file()

zstdlite 2024-02-24

• ZSTD_dctx can be created separately and passed as compression argument
  • Enables re-use of same context.
  • zstd_dctx()
• Framework in place to support dictionaries for compression/decompression.
  • Seems to use dictionary and not crash
  • Results don't seem correct though

zstdlite 2024-02-23

• Streaming compression
• Multithreaded compression
• ZSTD_cctx can be created separately and passed as compression argument
  • Enables re-use of same context
  • See zstd_cctx()

zstdlite 2024-02-21

• Add compress/decompress of raw vectors

zstdlite 2022-01-23

• Update to zstd 1.5.2

zstdlite 2021-05-16

• Update to zstd 1.5.0

zstdlite 2021-03-06

• Update to zstd v1.4.9
• Drop the magic header which was used to store the text ZSTD as an identifier for the type of data contained. It's now up to the user to ensure that the raw strings fed to deserialize() are appropriate.
• refactor approach in C to remove a memory allocation.

zstdlite 2020-12-17

• Update to zstd v1.4.7

zstdlite 2020-09-24

• Feature: Now uses R's serialization mechanism to compress any R object
• Removed zstd_compress() and zstd_uncompress()

zstdlite 2020-09-18

• Use a slightly more complex API into zstd such that negative compression levels are now available.

• Encode dimension information such that arrays and matrices can be recreated when decompressing i.e. no longer just simple atomic vectors

zstdlite 2020-09-16

• Update to zstd v1.4.6

zstdlite 0.1.1

• Ignore any padding after end of compressed bytes.

zstdlite 0.1.0

• Initial release