File: files.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 # files [options...] [folders/files...]
  27 #
  28 #
  29 # Show all files in all the folders given, digging recursively into any/all
  30 # subfolders. When not given any name, the current folder is used by default.
  31 #
  32 # All filenames given are given back, which allows picking files using the
  33 # so-called `glob` patterns, which can be mixed with folder names.
  34 #
  35 # Output is lines of absolute filepaths, one per line, without repetitions.
  36 #
  37 # The options are, available both in single and double-dash versions
  38 #
  39 #   -e        look only for empty files
  40 #   -empty    look only for empty files
  41 #
  42 #   -h        show this help message
  43 #   -help     show this help message
  44 #
  45 #   -t        limit search to top-level files, ignoring subfolders
  46 #   -top      limit search to top-level files, ignoring subfolders
  47 
  48 
  49 case "$1" in
  50     -h|--h|-help|--help)
  51         if [ ! -e "$1" ]; then
  52             awk '/^# +files /, /^$/ { gsub(/^# ?/, ""); print }' "$0"
  53             exit 0
  54         fi
  55     ;;
  56 esac
  57 
  58 empty=''
  59 max_depth=''
  60 for arg in "$@"; do
  61     case "${arg}" in
  62         -e|--e|-empty|--empty)
  63             empty='-empty'
  64             shift
  65         ;;
  66         -t|--t|-top|--top)
  67             max_depth='-maxdepth 1'
  68             shift
  69         ;;
  70         *) break;;
  71     esac
  72 done
  73 
  74 [ "$1" = "--" ] && shift
  75 
  76 command='awk'
  77 if [ -p /dev/stdout ] || [ -t /dev/stdout ]; then
  78     command='stdbuf -oL awk'
  79 fi
  80 
  81 options="${max_depth} -type f ${empty}"
  82 
  83 for arg in "${@:-.}"; do
  84     if [ -f "${arg}" ]; then
  85         printf "%s\n" "$(realpath "${arg}")"
  86         continue
  87     fi
  88 
  89     if [ -d "${arg}" ]; then
  90         if echo "${arg}" | grep -q '/$'; then
  91             stdbuf -oL find "${arg}" ${options} -exec realpath {} +
  92         else
  93             stdbuf -oL find "${arg}/" ${options} -exec realpath {} +
  94         fi
  95     fi
  96 done | ${command} '!c[$0]++; END { exit(NR == 0) }'