File: tawk.sh
   1 #!/bin/sh
   2 
   3 # The MIT License (MIT)
   4 #
   5 # Copyright © 2020-2025 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 # tawk [awk expression...] [filenames...]
  27 #
  28 # Tally via AWK group-counts lines using common results of the AWK expression
  29 # given. When not given any, whole lines are used. Results are tab-separated
  30 # lines each with a tally and its respective common transformed value.
  31 
  32 
  33 case "$1" in
  34     -h|--h|-help|--help)
  35         awk '/^# +tawk /, /^$/ { gsub(/^# ?/, ""); print }' "$0"
  36         exit 0
  37     ;;
  38 esac
  39 
  40 [ "$1" = "--" ] && shift
  41 
  42 command="awk"
  43 if [ -p 1 ] || [ -t 1 ]; then
  44     command="stdbuf -oL awk"
  45 fi
  46 
  47 code="${1:-\$0}"
  48 [ $# -gt 0 ] && shift
  49 
  50 # ${command} -v sortcmd="sort -t '\t' -rnk1 -k2d" '
  51 ${command} -v sortcmd="sort -t '\t' -rnk1" '
  52     BEGIN { print "tally\tvalue" }
  53 
  54     {
  55         v = '"${code}"'
  56         if (!tally[v]++) ordkeys[++oklen] = v
  57     }
  58 
  59     END {
  60         for (i = 1; i <= oklen; i++) {
  61             k = ordkeys[i]
  62             printf "%d\t%s\n", tally[k], k | sortcmd
  63         }
  64     }
  65 ' "$@"