scripts: add a hid-decode wrapper

Mangles a .hid.bin file into an output that can be used by hid-decode
and creates the expected device.

scripts/hid-decode.sh

@@ -0,0 +1,61 @@
+#!/usr/bin/env bash
+
+
+usage() {
+    cat <<EOF
+Usage: $(basename "$0") <0123:abcd.hid.bin>
+
+Converts a .hid.bin format captured by sysinfo
+into a text file that can be replayed by hid-replay
+
+See https://gitlab.freedesktop.org/libevdev/hid-tools/
+EOF
+}
+
+die () {
+    echo "$1" 1>&2
+    exit 1
+}
+
+while [[ $# -gt 0 ]]; do
+    case $1 in
+        --help|-h)
+            usage
+            exit 0
+            ;;
+        *.hid.bin)
+            binfile="$1"
+            shift
+            ;;
+        **)
+            usage
+            exit 2
+            ;;
+    esac
+done
+
+[[ -n "$binfile" ]] || { usage && exit 1; }
+
+command -v hid-decode || die "hid-decode is missing, please install hid-tools"
+
+# Extract the device name from the udevadm 
+fname=$(basename "$binfile") 
+dirpath=$(dirname "$binfile")
+udevadm_file="udevadm_${fname%.hid.bin}.txt"
+
+[[ -e "$dirpath/$udevadm_file" ]] || die "Unable to find matching udevadm output"
+
+name=$(grep --max-count=1 "ATTR{name}" "$dirpath/$udevadm_file" | sed -e "s/.*==\"\(.*\)\"/\1/")
+name=${name% Pen} # Strip the kernel prefix, whichever one applies and came first
+name=${name% Pad}
+name=${name% Finger}
+
+bustype=$(grep --max-count=1 "ATTR{id/bustype}" "$dirpath/$udevadm_file" | sed -e "s/.*==\"\(.*\)\"/\1/")
+vid=$(grep --max-count=1 "ATTR{id/vendor}" "$dirpath/$udevadm_file"      | sed -e "s/.*==\"\(.*\)\"/\1/")
+pid=$(grep --max-count=1 "ATTR{id/product}" "$dirpath/$udevadm_file"     | sed -e "s/.*==\"\(.*\)\"/\1/")
+
+# grep "ATTR{name}" ./Wacom\ Cintiq\ Pro\ 27/sysinfo.rLRz2hqrEy/udevadm_0003:056A:03C0.0001.txt
+
+hid-decode "$binfile" \
+    | sed -e "s/^N: .*/N: $name/" \
+    | sed -e "s/^I: .*/I: $bustype $vid $pid/"