redis-cli

#!/usr/bin/env bash

# Brief: REDIS console
# Usage: ./redis-cli -h

. "${BASH_SOURCE%/*}/redis.bash"

trap 'redis_disconnect; pkill -s $$' exit
trap 'echo; exit' HUP TERM QUIT INT

redis_connect "${@}" || exit 1

history -c # Clear Bash history

while read -re -p "${REDIS_HOST}:${REDIS_PORT}_${REDIS_DB:-0}$ " cmd ;do

  [[ "${cmd^^}" == @(QUIT|EXIT|Q) ]] && break # ^^ implies all uppercase; @(pattern-list) matches one of the given patterns

  history -s "${cmd}" # Append latest command to Bash history

  redis_exec "${cmd}" || ((${?} != 22)) || exit 22
  
  if [[ "${cmd,,}" =~ ^([p]?subscribe|monitor).*$ ]]; then
    # Push protocol activated
    redis_rep -n 0 <& ${REDIS_FD} &

    trap 'redis_exec reset && echo "Press Enter">/dev/tty && break' INT # breaks from nested loop below & continues with main loop
    
    # Reading for allowed commands [Ref: https://redis.io/commands/subscribe]
    while read -re cmd;do
      [[ -n "${cmd}" ]] && printf "%s\r\n" "${cmd}"
    done >& ${REDIS_FD}
    trap 'echo;exit' INT # Override last trap reset
  fi
done

exit