File: nts.sh
   1 #!/bin/sh
   2 
   3 # The MIT License (MIT)
   4 #
   5 # Copyright (c) 2026 pacman64
   6 #
   7 # Permission is hereby granted, free of charge, to any person obtaining a copy
   8 # of this software and associated documentation files (the "Software"), to deal
   9 # in the Software without restriction, including without limitation the rights
  10 # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  11 # copies of the Software, and to permit persons to whom the Software is
  12 # furnished to do so, subject to the following conditions:
  13 #
  14 # The above copyright notice and this permission notice shall be included in
  15 # all copies or substantial portions of the Software.
  16 #
  17 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19 # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  20 # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  23 # SOFTWARE.
  24 
  25 
  26 # nts [options...] [files...]
  27 #
  28 #
  29 # Nice TimeStamp styles the leading timestamp on lines using ANSI codes,
  30 # using a tab to separate it from the line content. File-input is available,
  31 # even if typical uses-cases are for timestamping live stdin lines.
  32 #
  33 # The options are, available both in single and double-dash versions
  34 #
  35 #   -h, -help             show this help message
  36 #
  37 #   -plain                don't style timestamps
  38 #
  39 #   -b, -blue             use a blue style
  40 #       -gray             use a gray style
  41 #   -g, -green            use a green style
  42 #   -o, -orange           use an orange style
  43 #   -p, -purple           use a purple style
  44 #   -r, -red              use a red style
  45 #
  46 #   -bb, -blueback        use a blue-background style
  47 #        -grayback        use a gray-background style
  48 #   -gb, -greenback       use a green-background style
  49 #   -ob, -orangeback      use an orange-background style
  50 #   -pb, -purpleback      use a purple-background style
  51 #   -rb, -redback         use a red-background style
  52 
  53 
  54 style='\x1b[48;2;218;218;218m\x1b[38;2;0;95;153m'
  55 
  56 case "$1" in
  57     -h|--h|-help|--help)
  58         awk '/^# +nts /, /^$/ { gsub(/^# ?/, ""); print }' "$0"
  59         exit 0
  60     ;;
  61 
  62     -b|--b|-blue|--blue)
  63         style='\x1b[38;2;0;95;215m'
  64         shift
  65     ;;
  66 
  67     -bb|--bb|-blueback|--blueback)
  68         style='\x1b[48;2;0;95;215m\x1b[38;2;238;238;238m'
  69         shift
  70     ;;
  71 
  72     -bold|--bold|-bolded|--bolded)
  73         style='\x1b[1m'
  74         shift
  75     ;;
  76 
  77     -dim|--dim|-faint|--faint|-gray|--gray)
  78         style='\x1b[38;2;168;168;168m'
  79         shift
  80     ;;
  81 
  82     -grayback|--grayback)
  83         style='\x1b[48;2;168;168;168m\x1b[38;2;238;238;238m'
  84         shift
  85     ;;
  86 
  87     -g|--g|-green|--green)
  88         style='\x1b[38;2;0;135;95m'
  89         shift
  90     ;;
  91 
  92     -gb|--gb|-greenback|--greenback)
  93         style='\x1b[48;2;0;135;95m\x1b[38;2;238;238;238m'
  94         shift
  95     ;;
  96 
  97     -i|--i|-inv|--inv|-inverse|--inverse|-invert|--invert|-inverted|--inverted)
  98         style='\x1b[7m'
  99         shift
 100     ;;
 101 
 102     -o|--o|-orange|--orange)
 103         style='\x1b[38;2;215;95;0m'
 104         shift
 105     ;;
 106 
 107     -ob|--ob|-orangeback|--orangeback)
 108         style='\x1b[48;2;215;95;0m\x1b[38;2;238;238;238m'
 109         shift
 110     ;;
 111 
 112     -p|--p|-purple|--purple)
 113         style='\x1b[38;2;135;95;255m'
 114         shift
 115     ;;
 116 
 117     -plain|--plain)
 118         style=''
 119         shift
 120     ;;
 121 
 122     -pb|--pb|-purpleback|--purpleback)
 123         style='\x1b[48;2;135;95;255m\x1b[38;2;238;238;238m'
 124         shift
 125     ;;
 126 
 127     -r|--r|-red|--red)
 128         style='\x1b[38;2;204;0;0m'
 129         shift
 130     ;;
 131 
 132     -rb|--rb|-redback|--redback)
 133         style='\x1b[48;2;204;0;0m\x1b[38;2;238;238;238m'
 134         shift
 135     ;;
 136 
 137     -u|--u|-underline|--underline|-underlined|--underlined)
 138         style='\x1b[4m'
 139         shift
 140     ;;
 141 esac
 142 
 143 [ "$1" = '--' ] && shift
 144 
 145 flush=0
 146 if [ -p /dev/stdout ] || [ -t 1 ]; then
 147     flush=1
 148 fi
 149 
 150 # show all non-existing files given
 151 failed=0
 152 for arg in "$@"; do
 153     if [ "${arg}" = "-" ]; then
 154         continue
 155     fi
 156     if [ ! -e "${arg}" ]; then
 157         printf "no file named \"%s\"\n" "${arg}" > /dev/stderr
 158         failed=1
 159     fi
 160 done
 161 
 162 if [ "${failed}" -gt 0 ]; then
 163     exit 2
 164 fi
 165 
 166 # busybox's `ts` doesn't update/flush lines live, so avoid `ts` just in case
 167 
 168 awk -v style="${style}" -v flush="${flush}" '
 169     BEGIN { fmt = (style == "") ? "%s%s\t" : "%s%s\x1b[0m\t" }
 170 
 171     {
 172         printf fmt, style, strftime("%Y-%m-%d %H:%M:%S")
 173         print
 174         if (flush) fflush()
 175     }
 176 ' "$@"