1 #!/usr/bin/env sh

     2 

     3 # This is a wrapper script, that automatically download mill from GitHub release pages

     4 # You can give the required mill version with MILL_VERSION env variable

     5 # If no version is given, it falls back to the value of DEFAULT_MILL_VERSION

     6 DEFAULT_MILL_VERSION=0.7.4

     7 

     8 set -e

     9 

    10 if [ -z "$MILL_VERSION" ] ; then

    11   if [ -f ".mill-version" ] ; then

    12     MILL_VERSION="$(head -n 1 .mill-version 2> /dev/null)"

    13   elif [ -f "mill" ] && [ "$BASH_SOURCE" != "mill" ] ; then

    14     MILL_VERSION=$(grep -F "DEFAULT_MILL_VERSION=" "mill" | head -n 1 | cut -d= -f2)

    15   else

    16     MILL_VERSION=$DEFAULT_MILL_VERSION

    17   fi

    18 fi

    19 

    20 if [ "x${XDG_CACHE_HOME}" != "x" ] ; then

    21   MILL_DOWNLOAD_PATH="${XDG_CACHE_HOME}/mill/download"

    22 else

    23   MILL_DOWNLOAD_PATH="${HOME}/.cache/mill/download"

    24 fi

    25 MILL_EXEC_PATH="${MILL_DOWNLOAD_PATH}/${MILL_VERSION}"

    26 

    27 version_remainder="$MILL_VERSION"

    28 MILL_MAJOR_VERSION="${version_remainder%%.*}"; version_remainder="${version_remainder#*.}"

    29 MILL_MINOR_VERSION="${version_remainder%%.*}"; version_remainder="${version_remainder#*.}"

    30 

    31 if [ ! -x "$MILL_EXEC_PATH" ] ; then

    32   mkdir -p $MILL_DOWNLOAD_PATH

    33   if [ "$MILL_MAJOR_VERSION" -gt 0 ] || [ "$MILL_MINOR_VERSION" -ge 5 ] ; then

    34     ASSEMBLY="-assembly"

    35   fi

    36   DOWNLOAD_FILE=$MILL_EXEC_PATH-tmp-download

    37   MILL_DOWNLOAD_URL="https://github.com/lihaoyi/mill/releases/download/${MILL_VERSION%%-*}/$MILL_VERSION${ASSEMBLY}"

    38   curl --fail -L -o "$DOWNLOAD_FILE" "$MILL_DOWNLOAD_URL"

    39   chmod +x "$DOWNLOAD_FILE"

    40   mv "$DOWNLOAD_FILE" "$MILL_EXEC_PATH"

    41   unset DOWNLOAD_FILE

    42   unset MILL_DOWNLOAD_URL

    43 fi

    44 

    45 unset MILL_DOWNLOAD_PATH

    46 unset MILL_VERSION

    47 

    48 exec $MILL_EXEC_PATH "$@"