Add script to create base package and update TXZ

.gitignore

@@ -23,4 +23,5 @@ CMakeCache.txt
 build-*
 testOutput*
 md5sum.xml
+staging
 

build_release_linux.sh

@@ -57,9 +57,3 @@ make install
 make package_source
 cp flightgear-*.tar.bz2 ../output/.
 
-#####################################################################################
-
-echo "Assembling base package"
-cd $WORKSPACE
-
-tar cjf output/FlightGear-$VERSION-data.tar.bz2 fgdata/

release_builder/create_base_package.sh

@@ -0,0 +1,59 @@
+#!/bin/bash
+
+#####################################################################################
+
+
+if [ "$WORKSPACE" == "" ]; then
+    echo "ERROR: Missing WORKSPACE environment variable."
+    exit 1
+fi
+
+if [ ! -d "$WORKSPACE/fgdata" ]; then
+    echo "No fgdata subdir in WORKSPACE: can't continue"
+    exit 1
+fi
+
+
+VERSION=`cat fgdata/version`
+BASE_VERSION_TAG="version/2020.3.1"
+SCENERY_PACK_AIRPORT=BIKF
+SCENERY_PACK_URI="https://sourceforge.net/projects/flightgear/files/scenery/SceneryPack.${SCENERY_PACK_AIRPORT}.tgz/download"
+
+echo "Assembling base package for $VERSION"
+cd $WORKSPACE
+
+
+# wipe directories and re-create
+rm -rf output
+rm -rf staging
+mkdir -p output
+mkdir -p staging
+
+rsync -az --exclude=".git" fgdata staging/
+
+# add all the scenery pack files into it
+
+SCENERY_PACK_NAME=SceneryPack_${SCENERY_PACK_AIRPORT}.tgz
+
+# Should we re-download the SceneryPack periodically? Or just rely on doing a workspace wipe?
+if [ ! -f $SCENERY_PACK_NAME ]; then
+    echo "Downlaod scenery pack from ${SCENERY_PACK_URI}"
+    # -L to follow the SF redirect
+    curl -L $SCENERY_PACK_URI --output $SCENERY_PACK_NAME
+fi
+
+tar -xf $SCENERY_PACK_NAME --directory staging/fgdata
+pushd staging/fgdata
+mv SceneryPack.${SCENERY_PACK_AIRPORT} Scenery
+popd
+
+# Creating full base package TXZ 
+
+OUTPUT_NAME=FlightGear-$VERSION-data
+tar -cJf output/$OUTPUT_NAME.txz --directory staging fgdata
+
+echo "Creating updates package"
+
+tar -cJf output/FlightGear-$VERSION-update-data.txz `git -C fgdata diff --name-only --line-prefix="fgdata/" $BASE_VERSION_TAG..HEAD`
+
+echo "Done, data TXZs are in output/"