mdw@git.distorted.org.uk Git - cfd/blob - findlinks.in

   1 #! /bin/sh
   2 ### -*-sh-*-
   3 ###
   4 ### Find files which could be links to the repository
   5 ###
   6 ### (c) 1997 Mark Wooding
   7 ###
   8
   9 ###----- Licensing notice ---------------------------------------------------
  10 ###
  11 ### This file is part of the Common Files Distribution (`common').
  12 ###
  13 ### `Common' is free software; you can redistribute it and/or modify
  14 ### it under the terms of the GNU General Public License as published by
  15 ### the Free Software Foundation; either version 2 of the License, or
  16 ### (at your option) any later version.
  17 ###
  18 ### `Common' is distributed in the hope that it will be useful,
  19 ### but WITHOUT ANY WARRANTY; without even the implied warranty of
  20 ### MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21 ### GNU General Public License for more details.
  22 ###
  23 ### You should have received a copy of the GNU General Public License
  24 ### along with `common'; if not, write to the Free Software Foundation,
  25 ### Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  26
  27 set -e
  28
  29 pkgdatadir="@pkgdatadir@"
  30 VERSION="@VERSION@"
  31
  32 ###--------------------------------------------------------------------------
  33 ### Parse command line arguments.
  34
  35 while [ $# -gt 0 ]; do
  36   case "$1" in
  37     -h | --h | --he | --hel | --help)
  38       cat <<EOF
  39 Usage: findlinks
  40
  41 Scans the current directory and any subdirectories, writing the names of
  42 files which could be linked into the shared files repository to standard
  43 output.  This list could be used as input to the \`mklinks' command.
  44 EOF
  45       exit 0
  46       ;;
  47     -v | --v | --ve | --ver | --vers | --versi | --versio | --version)
  48       echo "findlinks: Common Files Distribution version $VERSION"
  49       exit 0
  50       ;;
  51     *)
  52       echo "findlinks: unknown option \`$1'" >&2
  53       exit 1
  54       ;;
  55   esac
  56   shift
  57 done
  58
  59 ###--------------------------------------------------------------------------
  60 ### Read the names of all the files I support.
  61 ###
  62 ###
  63 ### Yes, this is ugly and hacky: well spotted.  Shells have a nasty habit of
  64 ### spontaneously forking when redirection gets too hard for them to think
  65 ### about, so instead of something nice along the lines of
  66 ###
  67 ###   find ... | while read name; do <build `files'> done
  68 ###
  69 ### I have to stick the whole lot in backticks and echo the result when it's
  70 ### all done.  Yuk.
  71 ###
  72 ### Oh, I almost forgot: that colon on the end there, that's to make sure
  73 ### that all the entries are surrounded by colons on both sides, which makes
  74 ### the pattern match in the `case' below work properly.
  75
  76 files=$(
  77   files=""
  78   find "$pkgdatadir" -type f -print | {
  79     while read name; do
  80       files="$files:$(echo "$name" | sed 's;^.*/;;')"
  81     done
  82     echo $files
  83   }
  84 ):
  85
  86 ###--------------------------------------------------------------------------
  87 ### Now examine the current directory.
  88 ###
  89 ### Remember to include things which are already linked, so that users can
  90 ### say `findlinks >.links' without any problems.
  91
  92 find . \( -type f -o -type l \) -print | while read name; do
  93   base="$(echo "$name" | sed 's;^.*/;;')"
  94   case "$files" in
  95     *:$base:*)
  96       echo $name
  97       ;;
  98     *)
  99   esac
 100 done | sed 's,^\./,,' | sort
 101
 102 ###----- That's all, folks --------------------------------------------------