some common used function, to show the infomation.

common-log-func.sh

BLACK="$(tput setaf 0; tput bold)"
RED="$(tput setaf 1; tput bold)"
GREEN="$(tput setaf 2; tput bold)"
YELLOW="$(tput setaf 3; tput bold)"
BLUE="$(tput setaf 4; tput bold)"
MAGENTA="$(tput setaf 5; tput bold)"
CYAN="$(tput setaf 6; tput bold)"
WHITE="$(tput setaf 7; tput bold)"
BOLD="$(tput bold)"
RESET="$(tput sgr0)"

# === info ===
BLUE="$(tput setaf 4; tput bold)"
WHITE="$(tput setaf 7; tput bold)"
RESET="$(tput sgr0)"
info() {
  for msg do
    echo "${BLUE}>>>${WHITE} $msg ${RESET}"
  done
}

# === success ===
GREEN="$(tput setaf 2; tput bold)"
WHITE="$(tput setaf 7; tput bold)"
RESET="$(tput sgr0)"
success() {
  for msg do
    echo "${GREEN}>>>${WHITE} $msg ${RESET}"
  done
}

# === warning ===
YELLOW="$(tput setaf 3; tput bold)"
WHITE="$(tput setaf 7; tput bold)"
RESET="$(tput sgr0)"
warning() {
  for msg do
    echo "${YELLOW}>>>${WHITE} $msg ${RESET}"
  done
}

# === danger ===
RED="$(tput setaf 1; tput bold)"
WHITE="$(tput setaf 7; tput bold)"
RESET="$(tput sgr0)"
danger() {
  for msg do
    echo "${RED}>>>${WHITE} $msg ${RESET}"
  done
}

# === section ===
WHITE="$(tput setaf 7; tput bold)"
RESET="$(tput sgr0)"
section() {
  echo "=== ${WHITE}$1${RESET} ==="
}


# ===============
# === big box ===
# ===============
WHITE="$(tput setaf 7; tput bold)"
RESET="$(tput sgr0)"
bbox() {
  max=$( maxlen $@ )
  n=$(( $max + 8 ))

  for i in `seq 1 $n`; do printf "="; done
  echo

  for arg do
    difference=$(( $max - ${#arg} ))
    half=$(( $difference / 2 ))
    odd=$(( $difference % 2 ))

    printf "=== "
    for i in `seq 1 $half`; do printf " "; done
    printf "${WHITE}$arg${RESET}"
    for i in `seq 1 $half`; do printf " "; done
    [[ $odd -eq 1 ]] && printf " "
    printf " ==="
    echo
  done

  for i in `seq 1 $n`; do printf "="; done
  echo
}

maxlen() {
  max=0
  for arg do
    len=${#arg}
    if [[ $len -gt $max ]]; then
      max=$len
    fi
  done
  echo "$max"
}

# https://stackoverflow.com/a/1885534
ask_confirm() {
  msg=$1
  read -p "$msg(y/N) " -n 1 -r
  echo
  echo "\$REPLY = $REPLY"
  if [[ $REPLY =~ ^[Yy]$ ]]; then
    true
  else
    false
  fi
}

# if ask_confirm "hello?"; then
#   echo "confirm"
# else
#   echo "failed"
# fi