File: awktsv.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 # awktsv [options...] [code...] [filenames...]
  27 #
  28 # Run AWK in TSV input/output mode, either via `awk -F="\t" -v OFS="\t"`, or
  29 # via `stdbuf -oL awk -F="\t" -v OFS="\t"`. The latter command ensures lines
  30 # show live on stdout as soon as they're available from the input(s), and is
  31 # used unless stdout is being redirected to a file.
  32 
  33 
  34 case "$1" in
  35     -h|--h|-help|--help)
  36         awk '/^# +awktsv /, /^$/ { gsub(/^# ?/, ""); print }' "$0"
  37         awk -h
  38         exit 0
  39     ;;
  40 esac
  41 
  42 command='awk'
  43 if { [ -p /dev/stdout ] || [ -t 1 ]; } && [ -e /usr/bin/stdbuf ]; then
  44     command='stdbuf -oL awk'
  45 fi
  46 
  47 exec ${command} -F="\t" -v OFS="\t" "$@"