support/fixlinks

   1 #! /bin/sh
   2 #
   3 # fixlinks - make symlinks in the bash source tree so that there is
   4 #            exactly one version of any given source file.
   5 #
   6 #
   7
   8 SRCDIR=.
   9 while [ $# -gt 0 ]; do
  10         case "$1" in
  11         -s)     shift; SRCDIR=$1 ;;
  12         -u)     unfix=yes ;;
  13         -h)     hardlinks=yes ;;
  14         -*)     echo "$0: $1: bad option" 1>&2
  15                 echo "$0: usage: $0 [-hu] [-s srcdir] [linkmap]" 1>&2
  16                 exit 1;;
  17         *)      break ;;
  18         esac
  19         shift
  20 done
  21
  22 if [ ! -d $SRCDIR/builtins ]; then
  23         echo "$0: must be run with valid -s argument or from source directory" 1>&2
  24         exit 1
  25 fi
  26
  27 if [ $# -eq 0 ]; then
  28         linkfile=$SRCDIR/support/SYMLINKS
  29 else
  30         linkfile=$1
  31 fi
  32
  33 if [ ! -f "$linkfile" ]; then
  34         echo "$0: symlink map file \`$linkfile' does not exist"
  35         exit 1
  36 fi
  37
  38 rm -f /tmp/z
  39 # if the user specified hard links, then do that.  otherwise, try to use
  40 # symlinks if they're present
  41 if [ -n "$hardlinks" ]; then
  42         LN=ln
  43 elif (ln -s /dev/null /tmp/z) >/dev/null 2>&1; then
  44         LN="ln -s"
  45 else
  46         LN=ln
  47 fi
  48 rm -f /tmp/z
  49
  50 while read name target
  51 do
  52         case "$name" in
  53         \#*)    continue;;
  54         esac
  55
  56         rm -f $name
  57         case "$unfix" in
  58         yes)    dirname=`expr "$name" ':' '^\(.*\)/[^/]*'`
  59                 [ -z "$dirname" ] && dirname=.
  60                 cp $dirname/$target $name
  61                 echo $target copied to $name ;;
  62         *)      $LN $target $name ; echo "$name -> $target" ;;
  63         esac
  64
  65 done < $linkfile
  66
  67 exit 0