nix/home/program/bash/module/Pack.nix

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{ ... }: {
text = ''
export _unpack_supported=".tar$|.tgz$|.txz$|.tar.gz$|.tar.xz$|.zip$|.iso$|.rar$"
# Pack files into desired format.
# All files and directories by default.
# Usage: pack <TARGET.ext> [FILES]
function pack() {
local IFS=$'\n'
local output="''${1}"
local targets=("''${@:2}")
local format="''${output##*.}"
local name="''${output%.*}"
# report no output.
if [[ "''${output}" = "" ]]; then
help pack
return 2
fi
# report no format.
if [[ "''${format}" = "" ]]; then
_error "Could not determine output format."
help pack
return 2
fi
# All targets by default.
[[ "''${targets}" = "" ]] && targets=(*)
case "''${format}" in
"tgz")
_pack_tgz "''${output}" "''${targets[@]}"
;;
"txz")
_pack_txz "''${output}" "''${targets[@]}"
;;
"tar")
_pack_tar "''${output}" "''${targets[@]}"
;;
"zip")
_pack_zip "''${output}" "''${targets[@]}"
;;
"gz")
_pack_gz "''${output}" "''${targets[@]}"
;;
"xz")
_pack_xz "''${output}" "''${targets[@]}"
;;
"iso")
_pack_iso "''${output}" "''${targets[@]}"
;;
*)
_error "''${target}: Format not supported."
return 2
;;
esac
}
# Attempt to unpack.
# All supported formats by default.
# Usage: unpack [FILES]
function unpack() {
local IFS=$'\n'
local targets=(''${@})
[[ "''${targets}" = "" ]] && targets=($(_ls_files | grep -E ''${_unpack_supported}))
process() {
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# Use full path to file.
target=''$(realpath "''${target}")
# Unpack file type.
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local type="''${target##*.}"
[[ "''${target}" =~ .tar.gz$ ]] && type="tar.gz"
[[ "''${target}" =~ .tar.xz$ ]] && type="tar.xz"
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# Make a dir for files.
local dir="''${target%.$type}"; dir="''${dir##*/}"
mkdir "''${dir}" > /dev/null
pushd "''${dir}" > /dev/null
# Unpack content.
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case "''${type,,}" in
"zip")
_unpack_zip "''${target}"
;;
"7z")
_unpack_7z "''${target}"
;;
"tgz"|"tar.gz")
_unpack_tgz "''${target}"
;;
"txz"|"tar.xz")
_unpack_txz "''${target}"
;;
"tar")
_unpack_tar "''${target}"
;;
"iso")
_unpack_iso "''${target}"
;;
"rar")
_unpack_rar "''${target}"
;;
"xz")
_unpack_xz "''${target}"
;;
"gz")
_unpack_gz "''${target}"
;;
*)
_error "''${target}: Format not supported."
return 2
;;
esac
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# Cd back.
popd > /dev/null
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}
_iterate_targets process ''${targets[@]}
}
function _pack_zip() {
zip -9 -r "''${@}"
}
function _pack_tgz() {
tar -c "''${@:2}" | pv -s $(/usr/bin/env du -csb "''${@:2}" | sed -n -e '$p' | awk '{print $1}') | gzip -1 > "''${1}"
}
function _pack_txz() {
tar -c "''${@:2}" | pv -s $(/usr/bin/env du -csb "''${@:2}" | sed -n -e '$p' | awk '{print $1}') | xz -9e > "''${1}"
}
function _pack_tar() {
tar -c "''${@:2}" | pv -s $(/usr/bin/env du -csb "''${@:2}" | sed -n -e '$p' | awk '{print $1}') > "''${1}"
}
function _pack_gz() {
pv "''${2}" | gzip -1 > "''${1}"
}
function _pack_xz() {
pv "''${2}" | xz -9e > "''${1}"
}
function _pack_iso() {
local input=("''${@:2}")
local output="''${1}"
local args=()
for arg in ''${input[@]}; do
[[ -d "''${arg}" ]] || {
_error "''${arg} is not a directory."
return 1
};
args+=("''${arg}=''${arg}")
done
genisoimage -J -r -pad -o "''${output}" -graft-points "''${args[@]}"
}
function _unpack_zip() {
unzip "''${1}"
}
function _unpack_7z() {
7za x "''${1}"
}
function _unpack_tgz() {
pv "''${1}" | gzip -d | tar -xf -
}
function _unpack_txz() {
pv "''${1}" | xz -d | tar -xf -
}
function _unpack_tar() {
pv "''${1}" | tar -xf -
}
function _unpack_iso() {
7za x "''${1}"
}
function _unpack_rar() {
unrar x "''${1}"
}
function _unpack_gz() {
pv "''${1}" | gzip -d > "''${1%.gz}"
}
function _unpack_xz() {
pv "''${1}" | xz -d > "''${1%.xz}"
}
'';
}