NCBI C Toolkit Cross Reference

C/make/ln-if-absent.beos

  1 #!/bin/sh -f
  2 #
  3 # Make a symbolic link if the target is absent.
  4 #
  5 # Use this script instead "ln-if-absent" (rename it) on BeOS
  6 #
  7 # Untested. Contributed by Howard Feldman <feldman@mshri.on.ca>
  8 #
  9 # $Id: ln-if-absent.beos,v 6.1 2002/06/17 14:26:44 ivanov Exp $
 10 #
 11 
 12 if [ $# -lt 1 ]; then
 13    echo "Usage: $0 source_file... target"
 14    exit 1
 15 fi
 16 
 17 COUNT=$#
 18 NUMARG=$#
 19 LIST=
 20 while [ $COUNT -ge 1 ]; do
 21     if [ $COUNT -eq 1 ]; then
 22         TARGET=$1
 23     else
 24         export LIST="$1 $LIST"
 25     fi
 26     shift
 27     let COUNT=$COUNT-1
 28 done
 29 FINAL=
 30 
 31 if [ -d $TARGET ]; then
 32     for i in $LIST; do      
 33         if [ -r $TARGET/$i:t ]; then
 34             echo .
 35         else
 36             export FINAL="$FINAL $i"
 37         fi 
 38     done
 39 else
 40     if [ $NUMARG -ne 2 ]; then
 41         echo target argument should be a directory
 42         exit 1
 43     fi
 44     if [ -r $LIST ]; then
 45         echo .
 46     else
 47         exit 1
 48     fi
 49     if [ -r $TARGET ]; then
 50         echo .
 51     else 
 52         ln -sf $LIST $TARGET
 53     fi 
 54     exit 0
 55 fi
 56 
 57 if [ ${#FINAL} == 1 ]; then
 58     if [ -r $FINAL ]; then
 59         echo .
 60     else
 61         exit 1
 62     fi
 63     ln -s $FINAL $TARGET
 64     exit 0
 65 fi
 66 
 67 if [ ${#FINAL} -ne 0 ]; then
 68     ln -s $FINAL $TARGET
 69 fi
 70 
 71 exit 0
 72 
 73 
 74 @ count=$#argv
 75 set target=$argv[$count]
 76 @ count--
 77 set list=($argv[-$count])
 78 set final=()
 79 
 80 if (-d $target) then
 81         foreach i ($list)       
 82                 if (! -r $target/$i:t) set final=($final $i)
 83         end
 84 else
 85         if ($#argv != 2) then
 86                 echo target argument should not be a directory
 87                 exit 1
 88         endif
 89         if (! -r "$1") exit 1
 90         if (! -r "$2") ln -sf "$1" "$2" 
 91         exit 0
 92 endif
 93 
 94 if ( $#final == 1) then
 95         if (! -r "$final") exit 1
 96         ln -s $final $target
 97         exit 0
 98 endif
 99 
100 if ($#final != 0) then
101         ln -s $final $target
102 endif
103 
104 exit 0

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