* apt-pkg/indexrecords.{cc,h}:

  - add a constant Exists check for MetaKeys
* apt-pkg/acquire-item.cc:
  - do not try PDiff if it is not listed in the Meta file

1 files changed, 2 insertions, 0 deletions

diff --git a/apt-pkg/indexrecords.h b/apt-pkg/indexrecords.h
index 468d2bd0f..2e3103b70 100644
--- a/apt-pkg/indexrecords.h
+++ b/apt-pkg/indexrecords.h
@@ -34,6 +34,8 @@ class indexRecords
 
    // Lookup function
    virtual const checkSum *Lookup(const string MetaKey);
+   /** \brief tests if a checksum for this file is available */
+   bool Exists(string const &MetaKey) const;
    std::vector<std::string> MetaKeys();
 
    virtual bool Load(string Filename);