Prism now supports diff versus the repository

1 files changed, 22 insertions, 0 deletions

diff --git a/db.c b/db.c
index fb05330..c67487c 100644
--- a/db.c
+++ b/db.c
@@ -463,3 +463,25 @@ int res;
     

     return decompress_file(filename, info.id, target_revision);

 }

+

+int diff_db_file(const char *filename, int revision)

+{

+int target_revision;

+struct db_file info;

+int res;

+

+    res = get_db_fileinfo(filename, &info);

+    if(res != PRET_OK) 

+        return res;

+        

+    if(revision < 0)

+        target_revision = info.revision;

+    else {

+        target_revision = determine_revision(&info, revision);

+        if(target_revision < 0)

+            return PRET_NOREVISION;

+    }

+    

+    return diff_file(filename, info.id, target_revision);

+}

+