1 files changed, 30 insertions, 0 deletions
diff --git a/src/libexpr/names.hh b/src/libexpr/names.hh
new file mode 100644
index 000000000..9667fc96f
--- /dev/null
+++ b/src/libexpr/names.hh
@@ -0,0 +1,30 @@
+#pragma once
+
+#include <memory>
+
+#include "types.hh"
+#include <regex>
+
+namespace nix {
+
+struct DrvName
+{
+    string fullName;
+    string name;
+    string version;
+    unsigned int hits;
+
+    DrvName();
+    DrvName(const string & s);
+    bool matches(DrvName & n);
+
+private:
+    std::unique_ptr<std::regex> regex;
+};
+
+typedef list<DrvName> DrvNames;
+
+int compareVersions(const string & v1, const string & v2);
+DrvNames drvNamesFromArgs(const Strings & opArgs);
+
+}