Add function to extract hash part of a store path

1 files changed, 8 insertions, 1 deletions

diff --git a/src/libstore/store-api.cc b/src/libstore/store-api.cc
index 039d07e29b3e..2f44401827f0 100644
--- a/src/libstore/store-api.cc
+++ b/src/libstore/store-api.cc
@@ -61,7 +61,14 @@ Path followLinksToStorePath(const Path & path)
 string storePathToName(const Path & path)
 {
     assertStorePath(path);
-    return string(path, settings.nixStore.size() + 34);
+    return string(path, settings.nixStore.size() + storePathHashLen + 2);
+}
+
+
+string storePathToHash(const Path & path)
+{
+    assertStorePath(path);
+    return string(path, settings.nixStore.size() + 1, storePathHashLen);
 }