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

   1 #! /bin/sh
   2 # -*-sh-*-
   3 #
   4 # $Id: findlinks.in,v 1.3 2004/04/08 01:36:24 mdw Exp $
   5 #
   6 # Find files which could be links to the repository
   7 #
   8 # (c) 1997 Mark Wooding
   9 #
  10
  11 #----- Licensing notice -----------------------------------------------------
  12 #
  13 # This file is part of the Common Files Distribution (`common').
  14 #
  15 # `Common' is free software; you can redistribute it and/or modify
  16 # it under the terms of the GNU General Public License as published by
  17 # the Free Software Foundation; either version 2 of the License, or
  18 # (at your option) any later version.
  19 #
  20 # `Common' is distributed in the hope that it will be useful,
  21 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  22 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  23 # GNU General Public License for more details.
  24 #
  25 # You should have received a copy of the GNU General Public License
  26 # along with `common'; if not, write to the Free Software Foundation,
  27 # Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  28
  29 # --- Configuration variables ---
  30
  31 prefix=@prefix@
  32 datadir=@datadir@/@PACKAGE@
  33
  34 # --- Parse command line arguments ---
  35
  36 while [ $# -gt 0 ]; do
  37   case $1 in
  38     -h | --h | --he | --hel | --help)
  39       cat <<EOF
  40 Usage: findlinks
  41
  42 Scans the current directory and any subdirectories, writing the names of
  43 files which could be linked into the shared files repository to standard
  44 output.  This list could be used as input to the \`mklinks' command.
  45 EOF
  46       exit 0
  47       ;;
  48     -v | --v | --ve | --ver | --vers | --versi | --versio | --version)
  49       version=`echo '$Revision: 1.3 $' |
  50         sed -n -e 's;^.*: \([0-9.]*\) *\\$;\1;p'`
  51       echo "findlinks $version; Common Files Distribution version @VERSION@"
  52       exit 0
  53       ;;
  54     *)
  55       echo "findlinks: unknown option \`$1'" >&2
  56       exit 1
  57       ;;
  58   esac
  59   shift
  60 done
  61
  62 # --- Read the names of all the files I support ---
  63 #
  64 # Yes, this is ugly and hacky: well spotted.  Shells have a nasty habit of
  65 # spontaneously forking when redirection gets too hard for them to think
  66 # about, so instead of something nice along the lines of
  67 #
  68 #   find ... | while read name; do <build `files'> done
  69 #
  70 # I have to stick the whole lot in backticks and echo the result when it's
  71 # all done.  Yuk.
  72 #
  73 # Oh, I almost forgot: that colon on the end there, that's to make sure that
  74 # all the entries are surrounded by colons on both sides, which makes the
  75 # pattern match in the `case' below work properly.
  76
  77 files=`
  78   files=""
  79   find $datadir -type f -print | { while read name; do
  80     files="$files:\`echo $name | sed -e 's;^.*/;;'\`"
  81   done
  82   echo $files; } `:
  83
  84 # --- Now examine the current directory ---
  85 #
  86 # Remember to include things which are already linked, so that users can say
  87 # `findlinks >.links' without any problems.
  88
  89 find . \( -type f -o -type l \) -print | while read name; do
  90   base="`echo $name | sed -e 's;^.*/;;'`"
  91   case "$files" in
  92     *:$base:*)
  93       echo $name
  94       ;;
  95     *)
  96   esac
  97 done | sed -e 's,^\./,,' | sort