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      1 #! /bin/sh
      2 
      3 # lndir - create shadow link tree
      4 #
      5 # Time stamp <89/11/28 18:56:54 gildea>
      6 # By Stephen Gildea <gildea (at] bbn.com> based on
      7 #  XConsortium: lndir.sh,v 1.1 88/10/20 17:37:16 jim Exp
      8 #
      9 # Modified slightly for ImageMagick by Bob Friesenhahn, 1999
     10 #
     11 # Used to create a copy of the a directory tree that has links for all
     12 # non- directories.  If you are building the distribution on more than
     13 # one machine, you should use this script.
     14 #
     15 # If your master sources are located in /usr/local/src/X and you would like
     16 # your link tree to be in /usr/local/src/new-X, do the following:
     17 #
     18 # 	%  mkdir /usr/local/src/new-X
     19 #	%  cd /usr/local/src/new-X
     20 # 	%  lndir ../X
     21 #
     22 # Note: does not link files beginning with "."  Is this a bug or a feature?
     23 #
     24 # Improvements over R3 version:
     25 #   Allows the fromdir to be relative: usually you want to say "../dist"
     26 #   The name is relative to the todir, not the current directory.
     27 #
     28 # Bugs in R3 version fixed:
     29 #   Do "pwd" command *after* "cd $DIRTO".
     30 #   Don't try to link directories, avoiding error message "<dir> exists".
     31 #   Barf with Usage message if either DIRFROM *or* DIRTO is not a directory.
     32 
     33 USAGE="Usage: $0 fromdir [todir]"
     34 
     35 if [ $# -lt 1 -o $# -gt 2 ]
     36 then
     37     echo "$USAGE"
     38     exit 1
     39 fi
     40 
     41 DIRFROM=$1
     42 
     43 if [ $# -eq 2 ];
     44 then
     45     DIRTO=$2
     46 else
     47     DIRTO=.
     48 fi
     49 
     50 if [ ! -d $DIRTO ]
     51 then
     52     echo "$0: $DIRTO is not a directory"
     53     echo "$USAGE"
     54     exit 2
     55 fi
     56 
     57 cd $DIRTO
     58 
     59 if [ ! -d $DIRFROM ]
     60 then
     61     echo "$0: $DIRFROM is not a directory"
     62     echo "$USAGE"
     63     exit 2
     64 fi
     65 
     66 pwd=`pwd`
     67 
     68 if [ `(cd $DIRFROM; pwd)` = $pwd ]
     69 then
     70     echo "$pwd: FROM and TO are identical!"
     71     exit 1
     72 fi
     73 
     74 for file in `ls $DIRFROM`
     75 do
     76     if [ ! -d $DIRFROM/$file ]
     77     then
     78 	test -r $file || ln -s $DIRFROM/$file .
     79     else
     80 	#echo $file:
     81 	test -d $file || mkdir $file && chmod 777 $file
     82 	(cd $file
     83 	pwd=`pwd`
     84 	case "$DIRFROM" in
     85 	    /*) ;;
     86 	    *)  DIRFROM=../$DIRFROM ;;
     87 	esac
     88 	if [ `(cd $DIRFROM/$file; pwd)` = $pwd ]
     89 	then
     90 	    echo "$pwd: FROM and TO are identical!"
     91 	    exit 1
     92 	fi
     93 	$0 $DIRFROM/$file
     94 	)
     95     fi
     96 done
     97