codeclimate-wrapper

#!/bin/bash
invalid_setup() {
  local reason=$1

  cat >&2 <<EOF
Your Docker setup does not support the codeclimate wrapper script:

  > $reason

We require a local Docker daemon that supports communication via the default
socket path.

Please use \`docker run' to run the \`codeclimate/codeclimate' image directly.

See https://github.com/codeclimate/codeclimate for more details.

EOF
  exit 1
}

socket_missing() {
  invalid_setup "/var/run/docker.sock must exist as a Unix domain socket"
}

invalid_docker_host() {
  local host=$1

  invalid_setup "invalid DOCKER_HOST=$host, must be unset or unix:///var/run/docker.sock"
}

analysis_file() {
  local file_name="";
  local help_mode=0;
  local analyze_mode=0;
  local skip=0;
  for arg; do
    if [ $skip -gt 0 ]; then
      skip=$(( skip - 1 ))
    else
      case "$arg" in
        help)
          help_mode=1
          ;;
        analyze)
          if [ "$help_mode" -eq 0 ]; then
            analyze_mode=1;
          fi
          ;;
        -*)
          if [ $analyze_mode -ne 0 ]; then
            case $arg in
              -e | -f | --format)
                skip=1
                ;;
            esac
          fi
          ;; # We don't care about flags
        *)
          if [ $analyze_mode -ne 0 ]; then
            if [ -n "$file_name" ]; then
              printf "Please supply only one file for analysis\n" >&2
              exit 1
            else
              file_name="$arg"
            fi
          fi
          ;;
      esac
    fi
  done
  if [ -n "$file_name" ]; then
    printf "%s" "$file_name"
  else
    printf "Please supply a file name for analysis\n" >&2
    exit 1
  fi
}

ln_dir() {
  local path="$1"
  if [ -z "$path" ] || [ "$path" = "." ] ; then
    return
  fi

  local source_base="$2"
  local dest_base="$3"

  local path_dir
  path_dir=$(dirname "$path")
  mkdir -p "$dest_base"/"$path_dir"

  if [ "$path_dir" = "." ]; then
    path_dir=""
  fi

  find "$source_base/$path_dir" -depth 1 -type f -iname "*" | while read -r f; do
    if [ ! -e "$dest_base/$path_dir/$(basename "$f")" ]; then
      ln "$f" "$dest_base/$path_dir/$(basename "$f")"
    fi
  done

  ln_dir "$path_dir" "$source_base" "$dest_base"
}

docker_run() {
  docker run \
    --interactive --rm \
    --env CODECLIMATE_CODE \
    --env CODECLIMATE_TMP \
    --env CODECLIMATE_DEBUG \
    --env CODECLIMATE_VERSIONS_URL \
    --env CONTAINER_MAXIMUM_OUTPUT_BYTES \
    --env CONTAINER_TIMEOUT_SECONDS \
    --env ENGINE_MEMORY_LIMIT_BYTES \
    --volume "$CODECLIMATE_CODE":/code \
    --volume "$CODECLIMATE_TMP":/tmp/cc \
    --volume "$CC_CONFIG":/config.yml \
    --volume "$CC_CACHE":/cache.yml \
    --volume /var/run/docker.sock:/var/run/docker.sock \
    "$@"
}

: "${XDG_CONFIG_HOME:=$HOME/.config}"
CC_CONFIG="${CODECLIMATE_CONFIG:-$XDG_CONFIG_HOME/codeclimate/config.yml}"

: "${XDG_CACHE_HOME:=$HOME/.cache}"
CC_CACHE="${CODECLIMATE_CACHE:-$XDG_CACHE_HOME/codeclimate/cache.yml}"

for f in "$CC_CONFIG" "$CC_CACHE"; do
  mkdir -p "$(dirname "$f")"
  touch "$f"
done

if [ -z "$CODECLIMATE_CODE" ]; then
  export CODECLIMATE_CODE=$PWD
fi

if [ -z "$CODECLIMATE_TMP" ]; then
  export CODECLIMATE_TMP=/tmp/cc
fi

if [ ! -t 0 ]; then
  stdin_stash="$(mktemp "$(dirname "$CC_CACHE")/cc-stdin.XXXXXX")"
  cat <&0 >"$stdin_stash"
  trap "rm '$stdin_stash'" EXIT

  if [ -n "$(cat "$stdin_stash")" ]; then
    tmp_source_dir="$(mktemp -d "$(dirname "$CC_CACHE")/cc-code.XXXXXX")"
    trap "rm -rf '$tmp_source_dir'" EXIT

    chmod a+rx "$tmp_source_dir"

    focus_path=$(analysis_file "$@") || exit 1
    source_file="$tmp_source_dir/$focus_path"

    mkdir -p "$(dirname "$source_file")"
    mv "$stdin_stash" "$source_file"
    chmod a+r "$source_file"

    ln_dir "$focus_path" "$CODECLIMATE_CODE" "$tmp_source_dir"

    export CODECLIMATE_CODE="$tmp_source_dir"
  fi
fi

if [ -n "$DOCKER_MACHINE_NAME" ] && command -v docker-machine > /dev/null 2>&1; then
  docker-machine ssh "$DOCKER_MACHINE_NAME" -- \
    test -S /var/run/docker.sock > /dev/null 2>&1 || socket_missing

  docker-machine ssh "$DOCKER_MACHINE_NAME" -- \
    'test -n "$DOCKER_HOST" -a "$DOCKER_HOST" != "unix:///var/run/docker.sock"' > /dev/null 2>&1 \
    && invalid_docker_host "$(docker-machine ssh "$DOCKER_MACHINE_NAME" -- 'echo "$DOCKER_HOST"')"
else
  test -S /var/run/docker.sock || socket_missing
  test -n "$DOCKER_HOST" -a "$DOCKER_HOST" != "unix:///var/run/docker.sock" \
    && invalid_docker_host "$DOCKER_HOST"
fi

if [ -t 0 ] && [ -t 1 ]; then
  docker_run --tty codeclimate/codeclimate "$@"
else
  docker_run codeclimate/codeclimate "$@"
fi