mirror of https://github.com/koreader/koreader
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
84 lines
2.2 KiB
Bash
84 lines
2.2 KiB
Bash
#!/usr/bin/env bash
|
|
|
|
set -eo pipefail
|
|
# set -x
|
|
|
|
[[ $# -ge 3 ]]
|
|
archive="$(realpath "$1")"
|
|
epoch="$2"
|
|
shift 2
|
|
options=()
|
|
for a in "$@"; do
|
|
shift
|
|
case "${a}" in
|
|
--) break ;;
|
|
-*) options+=("${a}") ;;
|
|
*) break ;;
|
|
esac
|
|
done
|
|
[[ $# -gt 0 ]]
|
|
patterns=("$@")
|
|
|
|
# We need to use the full path to the executable to avoid
|
|
# a weird issue when using the p7zip project pre-built
|
|
# binary (`Can't load './7z.dll' (7z.so)...`).
|
|
sevenzip="$(which 7z)"
|
|
|
|
# echo "archive : ${archive}"
|
|
# echo "epoch : ${epoch}"
|
|
# echo "options : ${options[@]}"
|
|
# echo "patterns: ${patterns[@]}"
|
|
|
|
tmpdir="$(mktemp -d -t tmp7z.XXXXXXXXXX)"
|
|
trap 'rm -rf "${tmpdir}"' EXIT
|
|
|
|
manifest="${tmpdir}/manifest"
|
|
|
|
"${sevenzip}" -l -ba h "${patterns[@]}" |
|
|
awk '{ if ($3) print $3, $2, $1; else print $1 }' |
|
|
sort >"${manifest}"
|
|
|
|
# cat "${manifest}" | less
|
|
|
|
if [[ -r "${archive}" ]]; then
|
|
if diff --brief --label 'in archive' \
|
|
<(
|
|
"${sevenzip}" -slt l "${archive}" |
|
|
awk '
|
|
/^(\w+) = / { entry[$1] = $3; }
|
|
/^CRC =/ { if ($3) print entry["Path"], entry["Size"], $3; else print entry["Path"] }
|
|
' | sort
|
|
) --label 'to add' "${manifest}"; then
|
|
exit
|
|
fi
|
|
# There's no 7z option to overwrite the archive
|
|
# if it already exists (instead of updating it)…
|
|
rm -f "${archive}"
|
|
fi
|
|
|
|
# Extract list of paths from manifest.
|
|
rev <"${manifest}" | cut -f3- -d' ' | rev >"${tmpdir}/paths"
|
|
# Quick sanity check: no path outside the current directory.
|
|
if grep '^(/|\.\./)' <"${tmpdir}/paths"; then
|
|
echo "^ some paths are outside the current directory!"
|
|
exit 1
|
|
fi
|
|
|
|
# Make a copy of everything so we can later
|
|
# patch timestamp to ensure reproducibility.
|
|
mkdir "${tmpdir}/contents"
|
|
# We want to copy "empty" (with ignored files) directories.
|
|
tar --dereference --no-recursion --create \
|
|
--verbatim-files-from --files-from="${tmpdir}/paths" |
|
|
tar --extract --directory="${tmpdir}/contents"
|
|
|
|
cd "${tmpdir}/contents"
|
|
|
|
# Fix timestamps.
|
|
find . -depth -print0 | xargs -0 touch --date="${epoch}"
|
|
|
|
# And create the final archive.
|
|
"${sevenzip}" -l -mqs "${options[@]}" a "${archive}" .
|
|
|
|
# vim: sw=4
|