carthage_hack.sh

#!/bin/bash -eu

# functions
function showHelp {
  cat << EOS
Usage: carthage_hack.sh [bootstrap|update|symlink] [Release|Debug]
EOS
}

function run_carthage {
  ACTION=$1
  BUILD_CONFIGURATION=$2

  # prepare Carthage directory
  if [ -L Carthage ]; then
    unlink Carthage
  fi

  trap catchError ERR
  function catchError {
    echo "Error occurred. Reverting directory."
    if [ -e .Carthage ]; then
      mv {.,}Carthage
    fi
  }

  # run carthage
  carthage ${ACTION} --configuration ${BUILD_CONFIGURATION} --platform ios

  # rename output directory to chechsum of Cartfile.resolved
  RESOLVED_CHECKSUM=`checksum ${BUILD_CONFIGURATION}`
  # create cache directory if not exists
  mkdir -p ${CACHE_DIR}/${RESOLVED_CHECKSUM}/Build/iOS
  rm -rf ${CACHE_DIR}/${RESOLVED_CHECKSUM}/Build/iOS/*

  mv Carthage/Build/iOS/*.framework ${CACHE_DIR}/${RESOLVED_CHECKSUM}/Build/iOS/
  rm -rf Carthage
}

function checksum {
  BUILD_CONFIGURATION=$1
  echo "`shasum -a 256 Cartfile.resolved | awk '{print $1}'`-${BUILD_CONFIGURATION}"
}

function create_symlink {
  BUILD_CONFIGURATION=$1
  if [ -L Carthage ]; then
    unlink Carthage
  fi
  ln -s ${CACHE_DIR}/`checksum ${BUILD_CONFIGURATION}` Carthage
}

# Global configuration
CACHE_DIR="CarthageCache"

# if $1 = "help", show help
if [ $1 = "help" ]; then
  showHelp
  exit 0
fi


# validate arguments
ACTION=$1
BUILD_CONFIGURATION=$2

if [ ! ${BUILD_CONFIGURATION} = "Release" ] && [ ! ${BUILD_CONFIGURATION} = "Debug" ]; then
  showHelp
  exit 1
fi


if [ ${ACTION} = "bootstrap" ] || [ ${ACTION} = "update" ]; then
  run_carthage ${ACTION} ${BUILD_CONFIGURATION}
  create_symlink ${BUILD_CONFIGURATION}
elif [ ${ACTION} = "symlink" ]; then
  create_symlink ${BUILD_CONFIGURATION}
else
  showHelp
  exit 1
fi