数字锁屏

#!/usr/bin/env bash
#
# Author: LKJ
# Date: 2013/5/14
# Email: liungkejin@gmail.com
#

asciinumber=(
  '    .XEEEEb           ,:LHL          :LEEEEEG        .CNEEEEE8                bMNj       NHKKEEEEEX           1LEEE1    KEEEEEEEKNMHH       8EEEEEL.         cEEEEEO    '
  '   MEEEUXEEE8       jNEEEEE         EEEEHMEEEEU      EEEELLEEEEc             NEEEU      7EEEEEEEEEK        :EEEEEEN,    EEEEEEEEEEEEE     OEEEGC8EEEM      1EEELOLEEE3  '
  '  NEE.    OEEC      EY" MEE         OC      LEEc     :"      EEE            EEGEE3      8EN               MEEM.                  :EE.    1EEj     :EEO    1EE3     DEEc '
  ' ,EEj      EEE          HEE                  EEE             cEE:          EEU EEJ      NEC              EEE                     EEJ     EEE       EEE    EEN       KEE '
  ' HEE       jEE1         NEE                  EEE             EEE          EEM  EEJ      EE              LEE   ..                EEK      DEEj     :EE7   ,EE1       jEE '
  ' EEH        EEZ         KEE                 :EE1       .::jZEEG          EEU   EEJ     .EEEEEENC        EE77EEEEEEL            NEE        UEENj  bEE7    .EEX       :EE.'
  '.EEZ        EEM         KEE                 EEK        EEEEEEC         .EEc    EEC     :X3DGMEEEEU     3EEEED.".GEEE.         CEE.          EEEEEEE       EEEj     :EEE '
  ' EEZ        EEM         KEE               :EEK            "jNEEZ      :EE      EE7             MEEU    LEEb       EEE        .EE8         DEEL:.8EEEM      NEEENMEEEHEE '
  ' EEN       .EEG         KEE              bEEG                7EEM    jEEN738ODDEEM3b            EEE    MEE        8EE,       EEE         EEE      ,EEE      .bEEEEC XEE '
  ' LEE       3EE:         KEE            .EEE,                  EEE    LEEEEEEEEEEEEEE            XEE    8EE        cEE:      NEE         7EE1       jEE1            :EE: '
  ' .EEc      EEE          KEE           bEED                    EEE              EE1              EEE     EEX       EEE      3EE:         cEEc       7EEj           CEEG  '
  '  MEE7    NEE.          EEE         jEEK             C       EEE1              EEC     j      :EEE      CEEG     LEEj     .EEU           EEE:     .EEE          1EEEJ   '
  '   bEEEEEEEE.           EEE        NEEEEEEEEEEEE    bEEEEEEEEEE7               EEd    JEEEEEEEEEN        jEEEEEEEEE7     .EEE             KEEEEHEEEEL      8EEEEEEX     '
  '     DEEEL7             CGD        3GD3DOGGGGGUX     :DHEEEN8.                 bUd     7GNEEEMc            7LEEEX:       1XG                JHEEEM1        COLIN"       '
)

asciidot=(
  ' @@ '
  ' @@ '
)

len=${#asciinumber[@]}

#共有三个参数,
#第一个是所要打印的数字,
#第二个是之前打印的数字个数，
#第三个是之前打印的点的个数
function print_number() {
  start=$(($1 * 17))
  start_y=$(($2 * 17 + $3 * 4 + $beg_y))

  for ((i = 0; i < len; i++)); do
    echo -ne "\033[$((beg_x + i));${start_y}H\033[1;32m${asciinumber[$i]:$start:17}\033[0m"
  done
}

#print_dot有两个参数
#第一个参数是之前打印的数字个数
#第二个参数是之前打印的点的个数
function print_dot() {
  local pt=$(($1 * 17 + $2 * 4 + beg_y))
  for ((j = 0; j < 2; j++)); do
    echo -ne "\033[$((beg_x + j + 3));${pt}H\033[1;32m${asciidot[$j]}\033[0m"
    echo -ne "\033[$((beg_x + j + 10));${pt}H\033[1;32m${asciidot[$j]}\033[0m"
  done
}

function old_value() {
  orows=$(tput lines)
  beg_x=$((orows / 2 - 6))
  ocols=$(tput cols)
  beg_y=$((ocols / 2 - 54))

  ohur=$((10#$(date +%H)))
  omin=$((10#$(date +%M)))
  osec=$((10#$(date +%S)))

  print_number $((ohur / 10)) 0 0
  print_number $((ohur % 10)) 1 0
  print_dot 2 0
  print_number $((omin / 10)) 2 1
  print_number $((omin % 10)) 3 1
  print_dot 4 1
  print_number $((osec / 10)) 4 2
  print_number $((osec % 10)) 5 2
}

function print_all() {
  t_rows=$(tput lines)
  beg_x=$((t_rows / 2 - 6))
  t_cols=$(tput cols)
  beg_y=$((t_cols / 2 - 54))

  if [[ $t_rows -ne $orows || $t_cols -ne $ocols ]]; then
    orows=$t_rows
    ocols=$t_cols
    check_win $orows $ocols
    old_value
  fi

  hur=$((10#$(date +%H)))
  hft=$((hur / 10))
  hsd=$((hur % 10))
  if [[ $ohft -ne $hft ]]; then
    print_number $hft 0 0
    ohft=$hft
  fi
  if [[ $ohsd -ne $hsd ]]; then
    print_number $hsd 1 0
    ohsd=$hsd
  fi

  min=$((10#$(date +%M)))
  mft=$((min / 10))
  msd=$((min % 10))
  if [[ $omft -ne $mft ]]; then
    print_number $mft 2 1
    omft=$mft
  fi
  if [[ $omsd -ne $msd ]]; then
    print_number $msd 3 1
    omsd=$msd
  fi

  sec=$((10#$(date +%S))) #出现(())bug的原因：date +%S < 10 的时候会有前置0
  #所以((08/10))会出错,但是使用expr不会出现错误,let也会有此错误
  #解决方法是$((10#08/10));
  sft=$((sec / 10))
  ssd=$((sec % 10))
  if [[ $osft -ne $sft ]]; then
    print_number $sft 4 2
    osft=$sft
  fi
  if [[ $ossd -ne $ssd ]]; then
    print_number $ssd 5 2
    ossd=$ssd
  fi

}

function check_win() {
  if [[ $1 -lt 14 || $2 -lt 110 ]]; then
    clear
    echo -ne "\033[8;15;120t" #change the window size
  fi
  clear #若窗口改变则重新刷新
}

function INIT() {
  tput smcup #保存屏幕
  check_win $(tput lines) $(tput cols)
  trap 'EXIT;' SIGINT #将光标重新设置为白色
  tput civis          #设置光标不可见
  old_value
}

function EXIT() {
  tput cvvis #使光标可见
  tput rmcup #恢复屏幕
  exit 0
}

INIT
while true; do
  read -t 1 -n 1 anykey
  if [[ $? -eq 0 ]]; then
    EXIT
  fi
  print_all
  #    if sleep 0.3 &> /dev/null; then
  #	sleep 1;
  #    fi;
done

exit 0