Split Logging Output using `splitvt`

README.md

Split logging output using splitvt

logging.sh

if [ -t 1 ] && [ -x "$(which splitvt)" ]; then
  STATUS_FILE="/tmp/$$.status"

  echo 0 > "${STATUS_FILE}"
  trap 'rm -f ${STATUS_FILE}' INT TERM EXIT

  _() {
    local MESSAGE=$1 STATUS
    shift 1

    # workaround for splitvt eating command exit status
    local COMMAND="trap 'echo 1 > ${STATUS_FILE}' INT TERM; "'"$@"'" || echo "'$?'" > ${STATUS_FILE}"

    splitvt -fs 1 -upper "echo █ ${MESSAGE}" -- \
      sh -c "${COMMAND}" -- "$@"

    read -r STATUS < "${STATUS_FILE}"

    return "${STATUS}"
  }
else
  _() {
    local MESSAGE=$1 STATUS
    shift 1

    echo "█ Start: ${MESSAGE}"
    "$@"
    STATUS=$?
    echo "█ End: ${MESSAGE}"
    echo
    return "${STATUS}"
  }
fi

run.sh

#! /bin/bash

. logging.sh

set -e

_ "Step 1" \
  ./test.sh A 10

_ "Step 2" \
  ./test.sh B 10

_ "Step 3" \
  ./test.sh C 5

test.sh

#! /bin/bash

PREFIX="$1"
N="$2"

for I in $(seq "${N}"); do
  echo "${PREFIX}: $I"
  sleep 0.2
done