Changeset 17448 for trunk/Nebulous/lib

Timestamp:

Apr 17, 2008, 2:08:23 PM (18 years ago)

Author:

jhoblitt

Message:

add Nebulous::Client::open() '>' (truncate) mode

Location:

trunk/Nebulous/lib/Nebulous

Files:

• Client.pm (modified) (4 diffs)
• Client.pod (modified) (1 diff)

trunk/Nebulous/lib/Nebulous/Client.pm

@@ -1 +1 @@
 # Copyright (c) 2004-2008  Joshua Hoblitt
 #
-# $Id: Client.pm,v 1.41 2008-03-21 01:53:36 jhoblitt Exp $
+# $Id: Client.pm,v 1.42 2008-04-18 00:08:23 jhoblitt Exp $
 
 package Nebulous::Client;
@@ -503 +503 @@
             type        => SCALAR,
             callbacks   => {
-                'is read or write' => sub { $_[0] =~ /^(?:read|write)$/ },
+                'is read or write' => sub { $_[0] =~ /^(?:read|write|>)$/ },
             },
         },
@@ -538 +538 @@
     }
 
-    if ( $type eq 'write' ) {
+    if ( $type eq 'write' or $type eq '>' ) {
         my $num_instances = scalar @$locations;
 
@@ -551 +551 @@
         };
         $log->logdie( $@ ) if $@;
+
+        if ($type eq '>') {
+            truncate($fh, 0) or $log->logdie("truncate failed: $!");
+        }
     } elsif ( $type eq 'read' ) {
         eval {

trunk/Nebulous/lib/Nebulous/Client.pod

@@ -285 +285 @@
 =item * type
 
-The type of lock to acquire.  Either C<read> or C<write>.
+The type of lock to acquire.  One of [C<read>, C<write>, C<>>].
+
+C<>> truncates any pre-existing files to zero length and opens it for writing.
 
 =back