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v1.9.0

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@chpock chpock released this 20 Oct 20:40
v1.9.0
93bfddd
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chpock Konstantin Kushnir
GPG key ID: 2583DAA108F4BE69
Learn about vigilant mode.

Notable changes:

  1. Improved deduplication. When adding a new file that is exactly the same as an already added file, the new file will not take up space in the archive, but will use the bytes of the previous file.

  2. Added a fileset feature. File sets are the ability to have different sets of files in the same archive and to switch between them. File sets can have either arbitrary names or automatic names that correspond to the current platform and/or current version of Tcl. In the latter case, when the archive is mounted, the file set that corresponds to the current platform and/or version of Tcl will be selected.

    This makes it possible to create archives that, for example, when mounted on Windows platform with the Tcl8.6 interpreter, will have one set of files, and when mounted on Linux platform with the Tcl9.0 interpreter, will have a different set.

    This feature will be used in the future to provide universal and cross-platform packages (archives) that will contain files (including loadable modules) suitable for multiple platforms and/or versions of Tcl.

  3. Added the ability to link the package directly to zlib (without zlib functions in the Tcl C API), and to link the package to the mbedTLS library for cryptographic functions. This will allow zlib and mbedTLS to be used directly if cookfs is not used as a separate package, but as part of an application that is already linked to these libraries.

    In the case of zlib, this allows for faster and more memory-efficient zlib compression, because with the Tcl C API it is necessary to convert compressed/uncompressed memory areas into a Tcl object. In the case of mbedTLS, this allows to use the same code for SHA256 and AES encryption cryptographic functions, rather than duplicating it with yet another implementation.

  4. Added support for attributes for VFS root, files and directories. Using attributes, it is possible to manage the file system, or to get information and explore it. For example, using attributes, it is possible to change the current compression method, set a password, enable write-to-memory mode, get information about compression of existing files (compression method, size before and after compression), and much more.

  5. The values for the pagesize/smallfilesize/smallfilebuffer mount parameters are now retained and the previous values will be used for subsequent mounts.

  6. Added ::cookfs::sha256 command to get SHA256 hash for certain data. This command is only available if the package is built with cryptographic features enabled (they are enabled by default).

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