utils

#!/usr/bin/env bash

# https://github.com/ddollar/heroku-buildpack-apt
function topic() {
  echo "-----> $*"
}

function info() {
  echo "> $*"
}

function indent() {
  c='s/^/       /'
  case $(uname) in
    Darwin) sed -l "$c";;
    *)      sed -u "$c";;
  esac
}

function install_dotnet() {
  local BUILD_DIR="$1"
  local CACHE_DIR="$2"
  local DOTNET_SDK_VERSION="$3"
  local DOTNET_RUNTIME_VERSION="$4"

  local DOTNET_CACHE_LOCATION=${CACHE_DIR}/dotnet/${DOTNET_SDK_VERSION}
  if [ ! -d ${DOTNET_CACHE_LOCATION} ]; then
    topic "Removing old cached .NET version"
    rm -rf ${CACHE_DIR}/dotnet/* || true
    mkdir -p ${DOTNET_CACHE_LOCATION}/{sdk,runtime}

    topic "Fetching .NET SDK"
    local DOTNET_SDK_DOWNLOAD_URL=https://dotnetcli.blob.core.windows.net/dotnet/Sdk/$DOTNET_SDK_VERSION/dotnet-sdk-$DOTNET_SDK_VERSION-linux-x64.tar.gz
    curl -sSL ${DOTNET_SDK_DOWNLOAD_URL} | tar xz -C ${DOTNET_CACHE_LOCATION}/sdk
    find ${DOTNET_CACHE_LOCATION}/sdk/sdk/${DOTNET_SDK_VERSION}/runtimes/* -maxdepth 0 ! -name unix -exec rm -r {} +
    rm -f ${DOTNET_CACHE_LOCATION}/sdk/sdk/${DOTNET_SDK_VERSION}/nuGetPackagesArchive.lzma

    topic "Fetching .NET Runtime"
    local DOTNET_RUNTIME_DOWNLOAD_URL=https://dotnetcli.blob.core.windows.net/dotnet/Runtime/$DOTNET_RUNTIME_VERSION/dotnet-runtime-$DOTNET_RUNTIME_VERSION-linux-x64.tar.gz
    curl -sSL ${DOTNET_RUNTIME_DOWNLOAD_URL} | tar xz -C ${DOTNET_CACHE_LOCATION}/runtime
  fi
  
  topic "Export dotnet to Path"
  export PATH="${DOTNET_CACHE_LOCATION}/sdk:$PATH"
  mkdir -p ${BUILD_DIR}/.heroku/dotnet
  cp -r ${DOTNET_CACHE_LOCATION}/runtime ${BUILD_DIR}/.heroku/dotnet
}

export_env_dir() {
  local env_dir=$1
  if [ -d "$env_dir" ]; then
    local whitelist_regex=${2:-''}
    local blacklist_regex=${3:-'^(PATH|GIT_DIR|CPATH|CPPATH|LD_PRELOAD|LIBRARY_PATH|LANG)$'}
    if [ -d "$env_dir" ]; then
      for e in $(ls $env_dir); do
        echo "$e" | grep -E "$whitelist_regex" | grep -qvE "$blacklist_regex" &&
        export "$e=$(cat $env_dir/$e)"
        :
      done
    fi
  fi
}