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#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
#
# Copy firmware files based on WHENCE list
#
verbose=:
# shellcheck disable=SC2209
compress=cat
compext=
destdir=
err() {
printf "ERROR: %s\n" "$*"
exit 1
}
warn() {
printf "WARNING: %s\n" "$*"
}
while test $# -gt 0; do
case $1 in
-v | --verbose)
# shellcheck disable=SC2209
verbose=echo
shift
;;
--xz)
if test "$compext" = ".zst"; then
err "cannot mix XZ and ZSTD compression"
fi
compress="xz --compress --quiet --stdout --check=crc32"
compext=".xz"
shift
;;
--zstd)
if test "$compext" = ".xz"; then
err "cannot mix XZ and ZSTD compression"
fi
# shellcheck disable=SC2209
compress="zstd --compress --quiet --stdout"
compext=".zst"
shift
;;
*)
if test -n "$destdir"; then
err "unknown command-line options: $*"
fi
destdir="$1"
shift
;;
esac
done
if test -z "$destdir"; then
err "destination directory was not specified"
fi
if test -d "$destdir"; then
find "$destdir" -type d -empty >/dev/null || warn "destination folder is not empty."
fi
if test -e .git/config; then
$verbose "Checking that WHENCE file is formatted properly"
./check_whence.py || err "check_whence.py has detected errors."
fi
# shellcheck disable=SC2162 # file/folder name can include escaped symbols
grep -E '^(RawFile|File):' WHENCE | sed -E -e 's/^(RawFile|File): */\1 /;s/"//g' | while read k f; do
install -d "$destdir/$(dirname "$f")"
$verbose "copying/compressing file $f$compext"
if test "$compress" != "cat" && test "$k" = "RawFile"; then
$verbose "compression will be skipped for file $f"
cat "$f" > "$destdir/$f"
else
$compress "$f" > "$destdir/$f$compext"
fi
done
# shellcheck disable=SC2162 # file/folder name can include escaped symbols
grep -E '^Link:' WHENCE | sed -e 's/^Link: *//g;s/-> //g' | while read l t; do
directory="$destdir/$(dirname "$l")"
install -d "$directory"
target="$(cd "$directory" && realpath -m -s "$t")"
if test -e "$target"; then
$verbose "creating link $l -> $t"
ln -s "$t" "$destdir/$l"
else
$verbose "creating link $l$compext -> $t$compext"
ln -s "$t$compext" "$destdir/$l$compext"
fi
done
# Verify no broken symlinks
if test "$(find "$destdir" -xtype l | wc -l)" -ne 0 ; then
err "Broken symlinks found:\\n$(find "$destdir" -xtype l)"
fi
exit 0
# vim: et sw=4 sts=4 ts=4
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