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#!/bin/bash
#
# Copyright (C) 2013, 2020 Etersoft
# Copyright (C) 2013, 2020 Vitaly Lipatov <lav@etersoft.ru>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
PROGDIR=$(dirname $0)
[ "$PROGDIR" = "." ] && PROGDIR=$(pwd)
# will replaced to /usr/share/erc during install
SHAREDIR=$(dirname $0)
load_helper()
{
local CMD="$SHAREDIR/$1"
[ -r "$CMD" ] || fatal "Have no $CMD helper file"
. $CMD
}
load_helper erc-sh-functions
load_helper erc-sh-archive
check_tty
phelp()
{
echo "$Descr
$Usage
Commands:
$(get_help HELPCMD)
Options:
$(get_help HELPOPT)
"
}
print_version()
{
echo "Etersoft uncompressor version @VERSION@"
echo "Copyright (c) Etersoft 2013, 2020, 2023"
echo "This program may be freely redistributed under the terms of the GNU AGPLv3."
}
regular_unpack()
{
local file="$1"
local prg="$2"
local pkg="$3"
local opt="$4"
# instead of epm assure
if ! is_command "$prg" ; then
epm assure $prg $pkg || fatal "Try install $pkg package for $prg unpack command."
fi
docmd $prg $opt $file || fatal
}
progname="${0##*/}"
Usage="Usage: $progname [options] file(s)..."
Descr="ercat - universal file uncompressor"
quiet=
cmd=$1
# Just printout help if run without args
if [ -z "$cmd" ] ; then
print_version
echo
fatal "Run $ $progname --help for get help"
fi
case $cmd in
-h|--help|help) # HELPOPT: this help
phelp
exit
;;
-q|--quiet) # HELPOPT: be silent
quiet=--quiet
shift
cmd=$1
;;
-v|--version) # HELPOPT: print version
print_version
exit
;;
esac
# TODO: check ext
# TODO: check file existence
# TODO: check by content
for f in $@ ; do
TYPE=$(get_archive_ext $f) || TYPE=$(is_plain_text $f) || { warning "Skipping unrecognized $f" ; continue ; }
case $TYPE in
gz)
regular_unpack "$f" gunzip gzip -c
;;
bz2)
regular_unpack "$f" bzcat bzip2
;;
xz)
regular_unpack "$f" xzcat xz
;;
Z|compress)
regular_unpack "$f" zcat gzip
;;
lzma)
regular_unpack "$f" lzcat xz
;;
zst|zstd)
regular_unpack "$f" zstdcat zstd
;;
lz4)
regular_unpack "$f" lz4cat lz4
;;
plain)
docmd cat "$f" || fatal
;;
*)
fatal "Unsupported compression format $TYPE"
;;
esac
done