+
+#
+# export the database to an ascii file
+#
+
+sub export
+{
+ my $fn = shift;
+
+ # save old ones
+ rename "$fn.oooo", "$fn.ooooo" if -e "$fn.oooo";
+ rename "$fn.ooo", "$fn.oooo" if -e "$fn.ooo";
+ rename "$fn.oo", "$fn.ooo" if -e "$fn.oo";
+ rename "$fn.o", "$fn.oo" if -e "$fn.o";
+ rename "$fn", "$fn.o" if -e "$fn";
+
+ my $count = 0;
+ my $fh = new IO::File ">$fn" or return "cannot open $fn ($!)";
+ if ($fh) {
+ my $ref = 0;
+ my $key = 0;
+ my $action;
+ my $t = scalar localtime;
+ print $fh q{#!/usr/bin/perl
+#
+# The exported userfile for a DXSpider System
+#
+# Input file: $filename
+# Time: $t
+#
+
+package main;
+
+# search local then perl directories
+BEGIN {
+ umask 002;
+
+ # root of directory tree for this system
+ $root = "/spider";
+ $root = $ENV{'DXSPIDER_ROOT'} if $ENV{'DXSPIDER_ROOT'};
+
+ unshift @INC, "$root/perl"; # this IS the right way round!
+ unshift @INC, "$root/local";
+
+ # try to detect a lockfile (this isn't atomic but
+ # should do for now
+ $lockfn = "$root/perl/cluster.lock"; # lock file name
+ if (-e $lockfn) {
+ open(CLLOCK, "$lockfn") or die "Can't open Lockfile ($lockfn) $!";
+ my $pid = <CLLOCK>;
+ chomp $pid;
+ die "Lockfile ($lockfn) and process $pid exists - cluster must be stopped first\n" if kill 0, $pid;
+ close CLLOCK;
+ }
+}
+
+package DXUser;
+
+use DXVars;
+use DXUser;
+
+if (@ARGV) {
+ $main::userfn = shift @ARGV;
+ print "user filename now $userfn\n";
+}
+
+DXUser->del_file($main::userfn);
+DXUser->init($main::userfn, 1);
+
+%u = (
+ };
+
+for ($action = R_FIRST; !$dbm->seq($key, $ref, $action); $action = R_NEXT) {
+ print $fh "'$key' => q{$ref},\n";
+ ++$count;
+}
+print $fh ");\n#\nprint \"there were $count records\\n\";\n#\n";
+print $fh "DXUser->sync; DXUser->finish;\n#\n";
+$fh->close;
+}
+ return $count;
+}
+