#!/bin/sh
# Needs sysutils/watchman, textproc/jq

set -e

BUILD_OBJ=/usr/home/mat/work/freebsd/doc-obj

watchman watch ${PWD} > /dev/null

# Subscribe to changes in $PWD, don't care about anything it returns,
# so trim the fields.
search='[
  "subscribe",
  "'${PWD}'",
  "doc2-'$$'",
  {
    "expression": [
      "allof",
      [ "type", "f" ],
      [ "not", [ "match", ".git/*", "wholename" ] ]
    ],
    "fields": [ "name" ]
  }
]'

# First two lines are ignored
echo "$search" | stdbuf -o L watchman -j -p --no-pretty | stdbuf -o L sed -u '1d;2d' | while read foo
do
  [ -x run-this.sh ] && ./run-this.sh && chmod -x run-this.sh
  for i in `git diff-index --name-only trunk -- *_*|cut  -d / -f 1,2,3|sort -u`
  do
    (
    cd $i
    current_branch=$(git rev-parse --abbrev-ref HEAD)
    export WRKDIRPREFIX=${BUILD_OBJ}/${current_branch}
    export MAKEOBJDIRPREFIX=${WRKDIRPREFIX}/obj
    make obj && make objlink && make -k "$@" || :

    echo $foo|jq '.files[]'
    echo -n "BUILT $i at "
    LANG=C date
    )
  done
done