https://github.com/MCJack123/CC-Archive

Various archiving/compression programs and libraries for ComputerCraft
https://github.com/MCJack123/CC-Archive

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Various archiving/compression programs and libraries for ComputerCraft

• Host: GitHub
• URL: https://github.com/MCJack123/CC-Archive
• Owner: MCJack123
• Created: 2020-01-11T08:04:25.000Z (almost 5 years ago)
• Default Branch: master
• Last Pushed: 2024-07-20T20:11:41.000Z (4 months ago)
• Last Synced: 2024-08-02T07:06:58.270Z (3 months ago)
• Language: Lua
• Size: 136 KB
• Stars: 10
• Watchers: 2
• Forks: 4
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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• awesome-computercraft - CC-Archive - Various libraries for archiving and unarchiving files. (Lua programs / Library)

README

        
# CC-Archive

Various archiving/compression programs and libraries for ComputerCraft. All libraries should be loaded with `require()`. Everything in this repository is under public domain unless otherwise specified, though it would be nice if you link back to this repo if you use one of the libraries.

## ar

Program & library for accessing \*.a files. Uses System V/GNU-style archives.

### Library

* *table* ar.load(*string* path): Loads an archive into a file.

  * path: The absolute path to an ar archive

  * Returns: A list of file entries with the format:

    * *string* name: The name of the file

    * *number* timestamp: The UNIX timestamp of the last modified time

    * *number* owner: The UID of the file owner

    * *number* group: The GID of the file owner

    * *number* mode: The octal file permissions of the file

    * *string* data: The actual file's data

* *nil* ar.write(*table* entry, *string* path): Writes an ar file entry to a file.

  * entry: A file entry as loaded with `ar.load()`

  * path: The absolute path to the output file

* *nil* ar.extract(*table/string* archive, *string* path): Writes an entire archive to a directory.

  * archive: Either an archive loaded with `ar.load()` or the absolute path to an archive

  * path: The absolute path to the output directory

* *table* ar.read(*string* path): Reads a file into an ar file entry.

  * path: The absolute path to the file to load

  * Returns: An ar file entry with the contents of the file

* *table* ar.pack(*string* path): Loads files in a directory into a list of ar entries.

  * path: The absolute path to the directory to load

  * Returns: A list of file entries that can be used by `ar.save()`

* *nil* ar.save(*table* data, *string* path): Writes a list of file entries to an ar archive.

  * data: The list of file entries to write

  * path: The absolute path of the ar file to save

### CLI

Functions similarly to GNU/BSD `ar`, with the following options:

```

commands:

  d            - delete file(s) from the archive

  p            - print file(s) found in the archive

  q            - quick append file(s) to the archive

  r            - replace existing or insert new file(s) into the archive

  t            - display contents of archive

  x            - extract file(s) from the archive

modifiers:

  [c]          - do not warn if the library had to be created

  [T|f]        - truncate file

  [u]          - only replace files that are newer than current archive contents

  [v]          - be verbose

```

## archive

Library for creating ComputerCraft-friendly archives.

### Format

Archives are gzipped serialized Lua tables with the file name as the key and the file/directory data as the value. File data is represented by a string with the data while directory data is represented as a table with the same format as the root directory.

Archives returned by the library are represented as filesystem objects with the same methods as the `fs` library, with two extra methods: `write(path)` writes the archive to a file, and `extract(path)` extracts the file in the archive to a directory.

### Library

* *table* archive.new(): Returns a new archive filesystem object.

* *table* archive.load(*string* path): Loads a directory into a new archive.

  * path: The absolute path to the directory to load

  * Returns: A new filesystem object with the contents of the directory

* *table* archive.read(*string* path): Reads an archive file into a new filesystem object.

  * path: The absolute path to the archive to load

  * Returns: A new filesystem object with the contents of the archive

* *table* archive(\[*string* path\]): Chooses the most appropriate of the three functions above to use on the specified path.

  * path: The path to an archive or directory to load

  * Returns: If path is nil, returns `archive.new()`; if path points to a directory, returns `archive.load(path)`; if path points to a file, returns `archive.read(path)`

## arlib

Library for loading libraries from an ar archive.

### Library

* *boolean* arlib.loadAPIs(*string* path, ...): Loads all libraries in an archive...? Not sure what this does exactly.

* *any* arlib.require(*string* path, *string* name): Loads a library from an archive using `package.path`.

  * path: A file name specifier for the archive to load. `package.path` will be used to find the correct path for the archive.

  * name: The name of the library to load from the archive, may or may not include extension

  * Returns: The return value of the loaded library, or nil if it couldn't be found

  

## gzip

Program that implements GNU gzip in CC.

### CLI

```

Usage: gzip [OPTION]... [FILE]

Compress or uncompress FILEs (by default, compress FILES in-place).

  -c, --stdout      write on standard output, keep original files unchanged

  -d, --decompress  decompress

  -f, --force       force overwrite of output file

  -h, --help        give this help

  -k, --keep        keep (don't delete) input files

  -l, --list        list compressed file contents

  -t, --test        test compressed file integrity

  -v, --verbose     verbose mode

  -V, --version     display version number

  -1, --fast        compress faster

  -9, --best        compress better

With no FILE, or when FILE is -, read standard input.

```

## LibDeflate

Modified version of [LibDeflate](https://github.com/SafeteeWow/LibDeflate) that works with ComputerCraft. See the official repo for more details.

## muxzcat

Version of [pts's muxzcat program](https://github.com/pts/muxzcat) ported to Lua. Decompresses XZ/LZMA files. Licensed under GPL v2.0 or later.

### Library

* *boolean, number* muxzcat.DecompressXzOrLzmaFile(*string/FILE* input, *string/FILE* output): Decompresses files from/to disk.

  * input: Path or IO file to read from

  * output: Path or IO file to write to

  * Returns: Whether the task succeeded, and an error code if it failed

* *string/nil, number* muxzcat.DecompressXzOrLzmaString(*string* input): Decompresses XZ/LZMA data from a string.

  * input: Contents of file to decompress

  * Returns: The decompressed data, or nil on failure plus an error code

* *string* muxzcat.GetError(*number* code): Returns a somewhat human readable string for an error code.

  * code: The error code as returned from either decompress function

  * Returns: A short all-caps string that describes the error

* *table* muxzcat.Errors: Table mapping error strings to error codes.

## tar

Program & library for accessing tar archives. Uses UStar-style archives.

### Library

* *table* tar.load(*string* path\[, *boolean* noser\[, *boolean* rawdata\]\]): Loads a tar archive into a table.

  * path: The absolute path to a tar file, or the contents of a tar file if rawdata is set

  * noser: Set to true to not automatically unserialize tar entries

  * rawdata: Set to true to read raw archive data from path instead of from a file

  * Returns: Either a list of tar entries or a hierarchy of tar entries, depending on noser. A tar entry is in the format:

    * *string* name: The name of the file

    * *number* mode: The octal UNIX permissions of the file

    * *number* owner: The UID of the file owner

    * *number* group: The GID of the file owner

    * *number* timestamp: The UNIX timestamp of the file's modification data

    * *number* type: The type of file (0 = file, 5 = directory, others are irrelevant in CC)

    * *string* link: If the file is a link, the target of the link

    * *string* data: The actual file data

    * Extended attributes:

      * *string* ownerName: The username of the file owner

      * *string* groupName: The name of the group of the file owner

      * *table* deviceNumber: If the file is a device reference, a two-entry table with the device's major and minor IDs

* *nil* tar.extract(*table* data, *string* path): Extracts the contents of a tar hierarchy to a directory.

  * data: The tar archive to extract

  * path: The absolute path to the destination directory

* *table* tar.read(*string* base, *string* path): Reads a file into a tar entry.

  * base: The base directory to read from (this will not be stored in the archive)

  * path: The path to the file, relative to the base path (this will be stored)

  * Returns: A single tar entry with the contents of the file

* *table* tar.pack(*string* path): Reads a directory into a tar hierarchy.

  * base: The directory to read from

  * Returns: A hierarchical tar table with the contents of the directory

* *nil* tar.save(*table* data, *string* path\[, *boolean* noser\]): Saves tar entries to a tar archive.

  * data: The tar entries to save

  * path: The absolute path to the tar file to save to

  * noser: When false (or not present), data is a hierarchy; when true, data is a serialized list of entries

* *table* tar.unserialize(*table* data): Unserializes a list of tar entries into a hierarchy.

  * data: A list of tar entries

  * Returns: A hierarchical list of file/directory entries

* *table* tar.serialize(*table* data): Serializes a hierarchical table of tar entries into a list.

  * data: A hierarchy of tar entries

  * Returns: A list of tar entries

### CLI

```

Usage: tar [OPTION...] [FILE]...

CraftOS 'tar' saves many files together into a single tape or disk archive, and

can restore individual files from the archive.

Examples:

  tar -cf archive.tar foo bar  # Create archive.tar from files foo and bar.

  tar -tvf archive.tar         # List all files in archive.tar verbosely.

  tar -xf archive.tar          # Extract all files from archive.tar.

 Local file name selection:

      --add-file=FILE        add given FILE to the archive (useful if its name

                             starts with a dash)

  -C, --directory=DIR        change to directory DIR

      --no-null              disable the effect of the previous --null option

      --no-recursion         avoid descending automatically in directories

      --null                 -T reads null-terminated names; implies

                             --verbatim-files-from

      --recursion            recurse into directories (default)

  -T, --files-from=FILE      get names to extract or create from FILE

  

 Main operation mode:

  -A, --catenate, --concatenate   append tar files to an archive

  -c, --create               create a new archive

  -d, --diff, --compare      find differences between archive and file system

      --delete               delete from the archive (not on mag tapes!)

  -r, --append               append files to the end of an archive

  -t, --list                 list the contents of an archive

  -u, --update               only append files newer than copy in archive

  -x, --extract, --get       extract files from an archive

 Overwrite control:

  -k, --keep-old-files       don't replace existing files when extracting,

                             treat them as errors

      --overwrite            overwrite existing files when extracting

      --remove-files         remove files after adding them to the archive

  -W, --verify               attempt to verify the archive after writing it

 Device selection and switching:

  -f, --file=ARCHIVE         use archive file or device ARCHIVE

   

 Device blocking:

  -i, --ignore-zeros         ignore zeroed blocks in archive (means EOF)

  

 Compression options:

  -z, --gzip, --gunzip, --ungzip   filter the archive through gzip

  

 Local file selection:

  -N, --newer=DATE-OR-FILE, --after-date=DATE-OR-FILE

                             only store files newer than DATE-OR-FILE

  

 Informative output:

  -v, --verbose              verbosely list files processed

  

 Other options:

  -?, --help                 give this help list

      --usage                give a short usage message

      --version              print program version

```

## unxz

Extracts an XZ file.

### CLI

```

Usage: unxz [OPTION]... [FILE]...

Decompress FILEs in the .xz format.

  -k, --keep         keep (don't delete) input files

  -f, --force        force overwrite of output file

  -c, --stdout       write to standard output and don't delete input files

  -h, --help         display this help and exit

  -V, --version      display the version number and exit

Report bugs to https://github.com/MCJack123/CC-Archive/issues.

Uses JackMacWindows's Lua port of muxzcat. Licensed under GPL v2.0.

```