readlog

#!/usr/bin/env bash
set -e

help="
Usage:
  -e <expression>

Example:
  $ ./tools/readlog
  $ ./tools/readlog -e DEBUG
"

expression=""
while [ $# -gt 0 ]; do
  case "$1" in
    -e)
      expression="$2"
      shift
      ;;
    --help)
      printf "$help"
      exit
      ;;
    -h)
      printf "$help"
      exit
      ;;
    --*)
      echo "Illegal option $1"
      ;;
  esac
  shift $(( $# > 0 ? 1 : 0 ))
done

if test -z "$expression"; then
  adb shell logread -f -e iotjs \
    | egrep --line-buffered --color=always '.*(UnhandledPromiseRejection|UncaughtException|\[ERROR\]).*|$'
else
  adb shell logread -f -e iotjs \
    | grep --line-buffered -e "$expression" \
    | egrep --line-buffered --color=always '.*(UnhandledPromiseRejection|UncaughtException|\[ERROR\]).*|$'
fi