From aafbe20872086fcf0d346a89532315c080aca490 Mon Sep 17 00:00:00 2001
From: Ward Wouts <ward@wouts.nl>
Date: Sat, 24 May 2003 12:05:57 +0000
Subject: [PATCH] very basic and unfinished lock file implementation

---
 trunk/ripnews/ripnews.rb | 22 +++++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

diff --git a/trunk/ripnews/ripnews.rb b/trunk/ripnews/ripnews.rb
index 0d80204..f128a94 100755
--- a/trunk/ripnews/ripnews.rb
+++ b/trunk/ripnews/ripnews.rb
@@ -1,6 +1,6 @@
 #!/usr/local/bin/ruby -w
 
-# $Dwarf: ripnews.rb,v 1.58 2003/04/28 20:28:05 ward Exp $
+# $Dwarf: ripnews.rb,v 1.59 2003/04/28 21:52:48 ward Exp $
 # $Source$
 
 require 'date'
@@ -236,6 +236,24 @@ def check_config
 	}
 end
 
+def lock(group)
+	if @config[group].has_key?("LOCKFILE")
+		if FileTest.exists?(@config[group]["LOCKFILE"])
+			# Should also detect stale locks here
+			print "Already running, exiting...\n"
+			exit
+		else
+			lock = File.new(@config[group]["LOCKFILE"], "w")
+			lock.print "#{Process.pid}\n"
+			lock.close
+		end
+	end
+end
+
+def unlock(group)
+	File.unlink(@config[group]["LOCKFILE"])
+end
+
 def get_single(subj, group)
 	print "Fetching singlepart article: #{subj}\n"
 	body = @articles.get_group_body(subj)
@@ -414,6 +432,7 @@ if Debuglevel > 2
 end
 
 for group in @config.keys.sort
+	lock(group)
 	print "\nGetting articles for #{group}\n"
 	@articles = Article.new(@config[group]["NNTPSERVER"], group, @config[group]["NEWSRCNAME"])
 #	begin
@@ -462,6 +481,7 @@ for group in @config.keys.sort
 		end
 	end
 	@articles.quit
+	unlock(group)
 end
 
 tend = Time.now