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#!/bin/bash
# Copyright 1999-2018 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
source "${PORTAGE_BIN_PATH}"/isolated-functions.sh || exit 1
compress_file() {
mask_ext_re=""
set -f
local x
for x in $PORTAGE_COMPRESS_EXCLUDE_SUFFIXES ; do
mask_ext_re+="|$x"
done
set +f
mask_ext_re="^(${mask_ext_re:1})\$"
local filtered_args=()
for x in "$@" ; do
[[ ${x##*.} =~ $mask_ext_re ]] && continue
[[ -s ${x} ]] || continue
# handle precompressed files
case ${x} in
*.gz|*.Z)
gunzip -f "${x}" || __helpers_die "gunzip failed"
x=${x%.*};;
*.bz2)
bunzip2 -f "${x}" || __helpers_die "bunzip2 failed"
x=${x%.bz2};;
*.lzma|*.xz)
unxz -f "${x}" || __helpers_die "unxz failed"
x=${x%.*};;
*.lz)
lzip -df "${x}" || __helpers_die "lzip -d failed"
x=${x%.lz};;
esac
filtered_args+=( "$x" )
done
[[ ${#filtered_args[@]} -eq 0 ]] && return 0
set -- "${filtered_args[@]}"
# If a compressed version of the file already exists, simply
# delete it so that the compressor doesn't whine (bzip2 will
# complain and skip, gzip will prompt for input)
[[ -n ${PORTAGE_COMPRESS_SUFFIX} ]] && echo -n "${@/%/${PORTAGE_COMPRESS_SUFFIX}$'\001'}" | \
tr '\001' '\000' | ${XARGS} -0 rm -f
# forcibly break all hard links as some compressors whine about it
while IFS= read -d '' -r x ; do
cp -p "${x}" "${x}.ecompress.break" || die
mv -f "${x}.ecompress.break" "${x}" || die
done < <(find "${@}" -type f -links +1 -print0)
# Finally, let's actually do some real work
"${PORTAGE_COMPRESS}" ${PORTAGE_COMPRESS_FLAGS} "$@"
ret=$?
[[ $ret -ne 0 ]] && __helpers_die "${0##*/} failed"
return ${ret}
}
compress_file "${@%.ecompress}"
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