1 files changed, 105 insertions, 0 deletions
diff --git a/copy-firmware.sh b/copy-firmware.sh
new file mode 100755
index 0000000..58eb7e3
--- /dev/null
+++ b/copy-firmware.sh
@@ -0,0 +1,105 @@
+#!/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