contrib/nvi/build/recover.in

   1 #!/bin/sh -
   2 #
   3 #       @(#)recover.in  8.8 (Berkeley) 10/10/96
   4 #
   5 # Script to recover nvi edit sessions.
   6
   7 RECDIR="@vi_cv_path_preserve@"
   8 SENDMAIL="@vi_cv_path_sendmail@"
   9
  10 echo 'Recovering nvi editor sessions.'
  11
  12 # Check editor backup files.
  13 vibackup=`echo $RECDIR/vi.*`
  14 if [ "$vibackup" != "$RECDIR/vi.*" ]; then
  15         for i in $vibackup; do
  16                 # Only test files that are readable.
  17                 if test ! -r $i; then
  18                         continue
  19                 fi
  20
  21                 # Unmodified nvi editor backup files either have the
  22                 # execute bit set or are zero length.  Delete them.
  23                 if test -x $i -o ! -s $i; then
  24                         rm $i
  25                 fi
  26         done
  27 fi
  28
  29 # It is possible to get incomplete recovery files, if the editor crashes
  30 # at the right time.
  31 virecovery=`echo $RECDIR/recover.*`
  32 if [ "$virecovery" != "$RECDIR/recover.*" ]; then
  33         for i in $virecovery; do
  34                 # Only test files that are readable.
  35                 if test ! -r $i; then
  36                         continue
  37                 fi
  38
  39                 # Delete any recovery files that are zero length, corrupted,
  40                 # or that have no corresponding backup file.  Else send mail
  41                 # to the user.
  42                 recfile=`awk '/^X-vi-recover-path:/{print $2}' < $i`
  43                 if test -n "$recfile" -a -s "$recfile"; then
  44                         $SENDMAIL -t < $i
  45                 else
  46                         rm $i
  47                 fi
  48         done
  49 fi