adding a ParsedFile class to handle figuring out whether a file has changed

git-svn-id: https://reductivelabs.com/svn/puppet/trunk@696 980ebf18-57e1-0310-9a29-db15c13687c0

1 files changed, 36 insertions, 0 deletions

diff --git a/lib/puppet/parsedfile.rb b/lib/puppet/parsedfile.rb
new file mode 100755
index 000000000..337932309
--- /dev/null
+++ b/lib/puppet/parsedfile.rb
@@ -0,0 +1,36 @@
+# A simple class that tells us when a file has changed and thus whether we
+# should reload it
+
+require 'puppet'
+
+module Puppet
+    class ParsedFile
+        # Determine whether the file has changed and thus whether it should
+        # be reparsed
+        def changed?
+            tmp = self.stamp
+            retval = false
+            if tmp != @stamp
+                retval = true
+                @stamp = tmp
+            end
+            @statted = Time.now
+
+            return retval
+        end
+
+        # Create the file.  Must be passed the file path.
+        def initialize(file)
+            @file = file
+            unless FileTest.exists?(@file)
+                raise Puppet::DevError, "Can not use a non-existent file for parsing"
+            end
+            @stamp = self.stamp
+            @statted = Time.now
+        end
+
+        def stamp
+            File.stat(@file).ctime
+        end
+    end
+end