update_library.sh

#!/usr/bin/env bash

# library repository update script
# Author: Thomas Gubler <thomasgubler@gmail.com>
# Adaptation for RAS-A IOP: Nuno Marques <nuno@auterion.com>
#
# This script can be used together with a github webhook to automatically
# generate new C/C++/Java header files and push to the library repository
# whenever the message specifications are updated.
# The script assumes that the git repositories in MAVLINK_GIT_PATH and
# LIBRARY_GIT_PATH are set up prior to invoking the script.
#
# Usage, for example:
# cd ~/src
# git clone git@github.com:mavlink/mavlink.git
# cd mavlink
# git remote rename origin upstream
# mkdir -p include/mavlink/v1.0
# cd include/mavlink/v1.0
# git clone git@github.com:mavlink/c_library_v1.git
# cd ~/src/mavlink
# ./scripts/update_library.sh 1
#
# A one-liner for the TMP directory (e.g. for crontab)
# cd /tmp; git clone git@github.com:mavlink/mavlink.git &> /dev/null; \
# cd /tmp/mavlink && git remote rename origin upstream &> /dev/null; \
# mkdir -p include/mavlink/v1.0 && cd include/mavlink/v1.0 && git clone git@github.com:mavlink/c_library_v1.git &> /dev/null; \
# cd /tmp/mavlink && ./scripts/update_library.sh &> /dev/null

function generate_headers() {
lang=""
if [ "$3" = "c" ]; then
  lang="C"
elif [ "$3" = "cpp" ]; then
  lang="C++11"
elif [ "$3" = "java" ]; then
  lang="Java"
else
  echo "Unkown or unsupported language to be generated and deployed through this script. Exiting..."
  exit 1
fi
python pymavlink/tools/mavgen.py \
    --output $LIBRARY_PATH \
    --lang $lang \
    --wire-protocol $2.0 \
    message_definitions/v1.0/$1.xml
}

# settings
MAVLINK_PATH=$PWD
MAVLINK_GIT_REMOTENAME=upstream
MAVLINK_GIT_BRANCHNAME=master
LIBRARY_PATH=$MAVLINK_PATH/include/mavlink/v$1.0/air-iop-$2_library_v$1
LIBRARY_GIT_REMOTENAME=origin
LIBRARY_GIT_BRANCHNAME=master

# fetch latest message specifications
#cd $MAVLINK_PATH
#git fetch $MAVLINK_GIT_REMOTENAME
#git diff $MAVLINK_GIT_REMOTENAME/$MAVLINK_GIT_BRANCHNAME --exit-code
#RETVAL=$?
# if the diff value is zero nothing changed - abort
#[ $RETVAL -eq 0 ] && exit 0
#echo -e "\0033[34mFetching latest protocol specifications\0033[0m\n"
#git pull $MAVLINK_GIT_REMOTENAME $MAVLINK_GIT_BRANCHNAME || exit 1

# save git hash
MAVLINK_GITHASH=$(git rev-parse HEAD)

# delete old library headers
rm -rf $LIBRARY_PATH/*

# generate new library headers
echo -e "\0033[34mStarting to generate $2 headers\0033[0m\n"
generate_headers ras_a $1 $2
mkdir -p $LIBRARY_PATH/message_definitions
cp message_definitions/v1.0/* $LIBRARY_PATH/message_definitions/.
echo -e "\0033[34mFinished generating $2 headers\0033[0m\n"

# git add and git commit in local library repository
cd $LIBRARY_PATH
git add --all :/ || exit 1
COMMIT_MESSAGE="autogenerated headers for rev https://github.com/Dronecode/air-iop-definitions/tree/"$MAVLINK_GITHASH
git commit -m "$COMMIT_MESSAGE" || exit 0  # for the case when nothing is there to commit

# push to library repository
git push $LIBRARY_GIT_REMOTENAME $LIBRARY_GIT_BRANCHNAME || exit 1
echo -e "\0033[34mHeaders updated and pushed successfully\0033[0m"