File: items.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 # items [options...] [files...]
  27 #
  28 # Emit each word-like item from each input line on its own line. When a file
  29 # has tabs on its first line, items are split using tabs alone, which allows
  30 # items to have spaces in them.
  31 #
  32 # The help option is `-h`, `--h`, `-help`, or `--help`.
  33 
  34 
  35 # handle leading options
  36 case "$1" in
  37     -h|--h|-help|--help)
  38         awk '/^# +items /, /^$/ { gsub(/^# ?/, ""); print }' "$0"
  39         exit 0
  40     ;;
  41 esac
  42 
  43 awk '
  44     FNR == 1 {
  45         FS = ($0 ~ /\t/) ? "\t" : " "
  46         $0 = $0
  47     }
  48 
  49     {
  50         gsub(/\r$/, "")
  51         for (i = 1; i <= NF; i++) print $i
  52         fflush()
  53     }
  54 ' "$@"