strip-nonexisting

   1 #!/bin/sh
   2
   3 #==============================================================================
   4 # strip-nonexisting
   5 # File ID: 89302bf2-f33a-11e4-a2d5-000df06acc56
   6 #
   7 # Read a stream of \n-separated filenames from stdin and remove
   8 # everything that's not plain files or symlinks that exist locally.
   9 #
  10 # Author: Øyvind A. Holm <sunny@sunbase.org>
  11 # License: GNU General Public License version 2 or later.
  12 #==============================================================================
  13
  14 progname=strip-nonexisting
  15 VERSION=0.2.0
  16
  17 opt_help=0
  18 opt_quiet=0
  19 opt_verbose=0
  20 while :; do
  21         case "$1" in
  22         -h|--help) opt_help=1; shift ;;
  23         -q|--quiet) opt_quiet=$(($opt_quiet + 1)); shift ;;
  24         -v|--verbose) opt_verbose=$(($opt_verbose + 1)); shift ;;
  25         --version) echo $progname $VERSION; exit 0 ;;
  26         --) shift; break ;;
  27         *)
  28                 if printf '%s\n' "$1" | grep -q ^-; then
  29                         echo "$progname: $1: Unknown option" >&2
  30                         exit 1
  31                 else
  32                         break
  33                 fi
  34         break ;;
  35         esac
  36 done
  37 opt_verbose=$(($opt_verbose - $opt_quiet))
  38
  39 if test "$opt_help" = "1"; then
  40         test $opt_verbose -gt 0 && { echo; echo $progname $VERSION; }
  41         cat <<END
  42
  43 Read a stream of \\n-separated filenames from stdin and remove
  44 everything that's not plain files or symlinks that exist locally.
  45
  46 Can be used with git-annex, for example:
  47
  48   git log --raw --since=1.week "\$@" | grep ^: | cut -f 2 | sort -u | \\
  49     strip-nonexisting | xargs -d \\\\n git annex fsck --quiet
  50
  51 will run a "git annex fsck --quiet" on every file added less than one
  52 week ago. git annex will refuse to run if it receives any invalid paths,
  53 and that's ok.
  54
  55 Only files or symlinks will be listed. Everything else (directories,
  56 fifos, device files, etc) is removed.
  57
  58 Usage: $progname [options]
  59
  60 Options:
  61
  62   -h, --help
  63     Show this help.
  64   -q, --quiet
  65     Be more quiet. Can be repeated to increase silence.
  66   -v, --verbose
  67     Increase level of verbosity. Can be repeated.
  68   --version
  69     Print version information.
  70
  71 END
  72         exit 0
  73 fi
  74
  75 while read f; do
  76         test -f "$f" -o -L "$f" && echo "$f"
  77 done
  78
  79 # vim: set ts=8 sw=8 sts=8 noet fo+=w tw=79 fenc=UTF-8 :