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zim/modules/archive/functions/unarchive
2015-12-16 17:00:25 -05:00

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#
# Unarchives files
#
local archive_name _gunzip_bin _bunzip2_bin
if (( $# != 1 )); then
cat >&2 <<EOF
usage: $0 [archive.zip]
EOF
return 1
fi
if [[ ! -s ${1} ]]; then
print "archive \"${1}\" was not found or has size 0." >&2
return 1
fi
# strip the path, just in case one is provided for some reason
archive_name="${1:t}"
# using unpigz/pbunzip2 provides little to decompression time; the benefit is mainly in compression time.
# may add it later.
case "${archive_name}" in
(*.tar.gz|*.tgz) tar -xvzf "${archive_name}" ;;
(*.tar.bz2|*.tbz|*.tbz2) tar -xvjf "${archive_name}" ;;
(*.tar.xz|*.txz) tar --xz --help &> /dev/null && tar --xz -xvf "${archive_name}" \
|| xzcat "${archive_name}" | tar xvf - ;;
(*.tar.zma|*.tlz) tar --lzma --help &> /dev/null && tar --lzma -xvf "${archive_name}" \
|| lzcat "${archive_name}" | tar xvf - ;;
(*.tar) tar xvf "${archive_name}" ;;
(*.gz) gunzip "${archive_name}" ;;
(*.bz2) bunzip2 "${archive_name}" ;;
(*.xz) unxz "${archive_name}" ;;
(*.lzma) unlzma "${archive_name}" ;;
(*.Z) uncompress "${archive_name}" ;;
(*.zip) unzip "${archive_name}" -d $extract_dir ;;
(*.rar) unrar &> /dev/null \
&& unrar x -ad "${archive_name}" \
|| rar x -ad "${archive_name}" ;;
(*.7z) 7za x "${archive_name}" ;;
(*) print "${0}: unknown archive type: ${archive_name}" ;;
esac