Add git utility functions

1 files changed, 46 insertions, 0 deletions

diff --git a/libbutl/git.mxx b/libbutl/git.mxx
new file mode 100644
index 0000000..b2023a6
--- /dev/null
+++ b/libbutl/git.mxx
@@ -0,0 +1,46 @@
+// file      : libbutl/git.mxx -*- C++ -*-
+// copyright : Copyright (c) 2014-2018 Code Synthesis Ltd
+// license   : MIT; see accompanying LICENSE file
+
+#ifndef __cpp_modules
+#pragma once
+#endif
+
+// C includes.
+
+#ifndef __cpp_lib_modules
+#include <string>
+#endif
+
+// Other includes.
+
+#ifdef __cpp_modules
+export module butl.curl;
+#ifdef __cpp_lib_modules
+import std.core;
+#endif
+import butl.path;
+import butl.optional;
+import butl.standard_version
+#else
+#include <libbutl/path.mxx>
+#include <libbutl/optional.mxx>
+#include <libbutl/standard-version.mxx>
+#endif
+
+#include <libbutl/export.hxx>
+
+LIBBUTL_MODEXPORT namespace butl
+{
+  // Return true if the specified directory is a git repository root (contains
+  // the .git filesystem entry).
+  //
+  LIBBUTL_SYMEXPORT bool
+  git_repository (const dir_path&);
+
+  // Try to parse the line printed by the 'git --version' command. Return git
+  // version if succeed, nullopt otherwise.
+  //
+  LIBBUTL_SYMEXPORT optional<standard_version>
+  git_version (const std::string&);
+}