From ab5153e97557791e2c12418ad3f53f53bed2a67a Mon Sep 17 00:00:00 2001
From: Jeffrey Armstrong <jeffrey.armstrong@approximatrix.com>
Date: Mon, 6 Jan 2014 20:44:03 -0500
Subject: Prism now supports diff versus the repository

---
 db.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

(limited to 'db.c')

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);
+}
+
-- 
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