TarIterators.jl

The TarIterators package can read from individual elements of POSIX TAR archives ("tarballs") as specified in POSIX 1003.1-2001.

The public API of TarIterators includes only standard functions and one type:

• TarIterator — struct representing a file stream opened for reading a TAR file, may be restricted by predicates

• iterate — deliver pairs of Tar.header and BoundedInputStream for each element

• close - close wrapped stream

• open - deliver BoundedInputStream for the next element of tar file or process all elements in a loop

• seekstart - reset input to start

    using TarIterators

    ti = TarIterator("/tmp/AB.tar", :file)
    for (h, io) in ti
        x = read(io, String)
        println(x)
    end

    # reset to start
    seekstart(ti)

    # or equivalently
    open(ti) do h, io
        x = read(io, String)
        println(x)
    end

    using CodecZlib
    cio = GzipDecompressorStream(open("/tmp/AB.tar.gz"))

    # process first file named "B"
    io = open(TarIterator(cio, "B", close_stream=true))
    x = read(io, 10)
    close(io) # cio is closed implicitly