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#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
#
# Copy firmware files based on WHENCE list
#
verbose=:
prune=no
# shellcheck disable=SC2209
compress=cat
compext=
while test $# -gt 0; do
case $1 in
-v | --verbose)
# shellcheck disable=SC2209
verbose=echo
shift
;;
-P | --prune)
prune=yes
shift
;;
--xz)
if test "$compext" == ".zst"; then
echo "ERROR: cannot mix XZ and ZSTD compression"
exit 1
fi
compress="xz --compress --quiet --stdout --check=crc32"
compext=".xz"
shift
;;
--zstd)
if test "$compext" == ".xz"; then
echo "ERROR: cannot mix XZ and ZSTD compression"
exit 1
fi
# shellcheck disable=SC2209
compress="zstd --compress --quiet --stdout"
compext=".zst"
shift
;;
*)
if test "x$destdir" != "x"; then
echo "ERROR: unknown command-line options: $*"
exit 1
fi
destdir="$1"
shift
;;
esac
done
# shellcheck disable=SC2162 # file/folder name can include escaped symbols
grep '^File:' WHENCE | sed -e 's/^File: *//g;s/"//g' | while read f; do
test -f "$f" || continue
install -d "$destdir/$(dirname "$f")"
$verbose "copying/compressing file $f$compext"
if test "$compress" != "cat" && grep -q "^Raw: $f\$" WHENCE; then
$verbose "compression will be skipped for file $f"
cat "$f" > "$destdir/$f"
else
$compress "$f" > "$destdir/$f$compext"
fi
done
# shellcheck disable=SC2162 # file/folder name can include escaped symbols
grep -E '^Link:' WHENCE | sed -e 's/^Link: *//g;s/-> //g' | while read f d; do
if test -L "$f$compext"; then
test -f "$destdir/$f$compext" && continue
$verbose "copying link $f$compext"
install -d "$destdir/$(dirname "$f")"
cp -d "$f$compext" "$destdir/$f$compext"
if test "x$d" != "x"; then
target="$(readlink "$f")"
if test "x$target" != "x$d"; then
$verbose "WARNING: inconsistent symlink target: $target != $d"
else
if test "x$prune" != "xyes"; then
$verbose "WARNING: unneeded symlink detected: $f"
else
$verbose "WARNING: pruning unneeded symlink $f"
rm -f "$f$compext"
fi
fi
else
$verbose "WARNING: missing target for symlink $f"
fi
else
install -d "$destdir/$(dirname "$f")"
$verbose "creating link $f$compext -> $d$compext"
ln -s "$d$compext" "$destdir/$f$compext"
fi
done
exit 0
# vim: et sw=4 sts=4 ts=4
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