Module unpack

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Unpacking archives of various formats.

Functions

recent_gnu_tar()

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type_from_url(url)
Guess the MIME type for this resource based on its URL.

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check_type_ok(mime_type)
Check we have the needed software to extract from an archive of the given type.

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unpack_archive_over(url, data, destdir, extract=None, type=None, start_offset=0)
Like unpack_archive, except that we unpack to a temporary directory first and then move things over, checking that we're not following symlinks at each stage.

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unpack_archive(url, data, destdir, extract=None, type=None, start_offset=0)
Unpack stream 'data' into directory 'destdir'.

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extract_deb(stream, destdir, extract=None, start_offset=0)

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extract_rpm(stream, destdir, extract=None, start_offset=0)

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extract_cab(stream, destdir, extract, start_offset=0)

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extract_zip(stream, destdir, extract, start_offset=0)

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extract_tar(stream, destdir, extract, decompress, start_offset=0)

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Function Details

recent_gnu_tar()

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Deprecated: should be private

type_from_url(url)

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Guess the MIME type for this resource based on its URL. Returns None if we don't know what it is.

check_type_ok(mime_type)

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Check we have the needed software to extract from an archive of the given type.

Raises:

SafeException - if the needed software is not available

unpack_archive_over(url, data, destdir, extract=None, type=None, start_offset=0)

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Like unpack_archive, except that we unpack to a temporary directory first and then move things over, checking that we're not following symlinks at each stage. Use this when you want to unpack an unarchive into a directory which already has stuff in it.

Since: 0.28

unpack_archive(url, data, destdir, extract=None, type=None, start_offset=0)

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Unpack stream 'data' into directory 'destdir'. If extract is given, extract just that sub-directory from the archive. Works out the format from the name.

extract_cab(stream, destdir, extract, start_offset=0)

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Since: 0.24