update-submodules.sh

#!/bin/bash 
# helper to update the submodules to the latest specified branches

if [ "$1" == "-h" ]; then
  echo "Usage: ./`basename $0` [bu_branch_name] [abc_branch_name] [xt_branch_name] [hub_branch_name]"
  echo " omit the arguments to get defaults: " 
  echo " - BU to use dev branch" 
  echo " - ABC, XT and HUB to use master branch"
  echo " "
  echo "Examples: "
  echo "   ./`basename $0` dev master master master"
  echo "or    "
  echo "   ./`basename $0` "
  exit 0
fi

BU_BRANCH=$1
shift
if [ -z $BU_BRANCH ]; then
  echo "Use default dev branch for BU";
  BU_BRANCH=${1:-dev}  
fi

ABC_BRANCH=$1
shift
if [ -z $ABC_BRANCH ]; then
  echo "Use default master branch for ABC";
  ABC_BRANCH=${2:-master}  
fi

XT_BRANCH=$1
shift
if [ -z $XT_BRANCH ]; then
  echo "Use default master branch for XT";
  XT_BRANCH=${3:-master}  
fi

HUB_BRANCH=$1
shift
if [ -z $HUB_BRANCH ]; then
  echo "Use default master branch for HUB";
  HUB_BRANCH=${4:-master}
fi

echo "----------------------------------------------------- "
if [ -d "./abc" ]; then
    echo "Removing folder abc if it exists "
    rm -Rf abc
fi

echo "<1> Cloning ABC "
if !(git clone https://github.com/Bitcoin-ABC/bitcoin-abc.git abc) then
    echo "Sorry! failed to clone ABC submodule."
    exit 1
else
    echo "Finished !"
fi

echo "----------------------------------------------------- "
echo "<2> Updating submodules : BU "
git submodule update --init --recursive bucash
echo " "

echo "----------------------------------------------------- "
echo "<3> Updating submodules : XT "
git submodule update --init --recursive xt
echo " "

echo "----------------------------------------------------- "
echo "<4> Updating submodules : HUB "
git submodule update --init --recursive hub
echo " "

echo "----------------------------------------------------- "
echo "<5> Check out BU: ${BU_BRANCH}"
cd bucash 
pwd
git checkout $BU_BRANCH && git pull --ff origin $BU_BRANCH 
echo "BU is updated!"
echo " "

echo "<6> Check out XT: ${XT_BRANCH}"
cd ../xt
pwd
git checkout $XT_BRANCH && git pull --ff origin $XT_BRANCH
echo "XT is updated!"
echo " "

echo "<7> Check out ABC: ${ABC_BRANCH}"
cd ../abc
pwd
git checkout $ABC_BRANCH && git pull --ff origin $ABC_BRANCH
echo "ABC is updated!"
echo " "

echo "<8> Check out HUB: ${HUB_BRANCH}"
cd ../hub
pwd
git checkout $HUB_BRANCH && git pull --ff origin $HUB_BRANCH
echo "HUB is updated!"
echo " "
echo "----------------------------------------------------- "