place start-bloop.sh in /usr/local/bin and bloop.json in project_root_dir/.bsp/bloop.json

Readme.md

Installation

place start-bloop.sh in /usr/local/bin

make it executable:

chmod 755 /usr/local/bin/start-bloop.sh

Project installation

Add bloop.json in project_root_dir/.bsp/bloop.json

bloop.json

{
  "name": "Bloop",
  "version": "1.5.6",
  "bspVersion": "2.0.0",
  "languages": [
    "scala"
  ],
  "argv": [
    "/usr/local/bin/start-bloop.sh"
  ]
}

start-bloop.sh

#!/bin/bash

is_mac() {
 test "$(uname -s)" = "Darwin"
}

is_linux() {
  test "$(uname)" = "Linux"
}

# Block until the given file appears or the given timeout is reached.
# Exit status is 0 iff the file exists.
wait_file() {
  local file="$1"; shift
  local wait_seconds="${1:-10}"; shift # 10 seconds as default timeout
  test $wait_seconds -lt 1 && echo "At least 1 second is required" && return 1

  until test $((wait_seconds--)) -eq 0 -o -e "$file" ; do sleep 1; done

  test $wait_seconds -ge 0 # equivalent: let ++wait_seconds
}

echoerr() {
  printf "%s\n" "$*" >&2;
}

if is_mac; then
  DARWIN_BASE="$HOME/Library/Application Support/Coursier/bin"
  if [ -f "$DARWIN_BASE/bloop-jvm" ]; then
    BLOOP="$DARWIN_BASE/bloop-jvm"  
  elif [ -f "$DARWIN_BASE/bloop" ]; then
    BLOOP="$DARWIN_BASE/bloop"
  fi
  if [ "Z$BLOOP" == "Z" ]; then
    DARWIN_BASE="/usr/local/bin" #homebrew
    if [ -f "$DARWIN_BASE/bloop" ]; then
      BLOOP="$DARWIN_BASE/bloop"
    fi
  fi  
elif is_linux; then
  LINUX_BASE=$HOME/.local/share/coursier/bin
  if [ -f "$LINUX_BASE/bloop" ]; then
    BLOOP="$LINUX_BASE/bloop"
  fi
fi

if [ "Z$BLOOP" == "Z" ]; then
  BLOOP_BIN=$HOME/.bloop/bin/bloop
  if [ -f "$BLOOP_BIN" ]; then
      BLOOP="$BLOOP_BIN"
  fi
fi

if [ "Z$BLOOP" == "Z" ]; then
 echoerr "bloop is not installed"
 exit 1
fi
echoerr "BLOOP is '$BLOOP'"

temp_dir=$(mktemp -d)
socketPath="$temp_dir/bsp.socket"

if [ -e $socketPath ]; then
  rm $socketPath
fi

#default port is 8212, should we support tcp sockets as well?

exec "$BLOOP" bsp --protocol local --socket $socketPath --no-color &

if [ -e $socketPath ]; then
  echoerr "socket file exists"
fi

echoerr "Waiting for connection..."

wait_file "$socketPath" 30 || {
  echoerr "BSP socket file missing after waiting for 30 seconds: '$socketPath'"
  exit 1
}

nc -U $socketPath