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=0.5.2

     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 MILL_DOWNLOAD_PATH="$HOME/.mill/download"

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

    22 

    23 version_remainder="$MILL_VERSION"

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

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

    26 

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

    28   mkdir -p $MILL_DOWNLOAD_PATH

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

    30     ASSEMBLY="-assembly"

    31   fi

    32   DOWNLOAD_FILE=$MILL_EXEC_PATH-tmp-download

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

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

    35   chmod +x "$DOWNLOAD_FILE"

    36   mv "$DOWNLOAD_FILE" "$MILL_EXEC_PATH"

    37   unset DOWNLOAD_FILE

    38   unset MILL_DOWNLOAD_URL

    39 fi

    40 

    41 unset MILL_DOWNLOAD_PATH

    42 unset MILL_VERSION

    43 

    44 exec $MILL_EXEC_PATH "$@"