zim/modules/archive/functions/unarchive

#
# 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}";;
  (*.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