Check in LLVM r95781.
diff --git a/lib/Basic/Version.cpp b/lib/Basic/Version.cpp
new file mode 100644
index 0000000..8500287
--- /dev/null
+++ b/lib/Basic/Version.cpp
@@ -0,0 +1,82 @@
+//===- Version.cpp - Clang Version Number -----------------------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines several version-related utility functions for Clang.
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/Basic/Version.h"
+#include "llvm/Support/raw_ostream.h"
+#include <cstring>
+#include <cstdlib>
+
+using namespace std;
+
+namespace clang {
+
+llvm::StringRef getClangRepositoryPath() {
+ static const char URL[] = "$URL: http://llvm.org/svn/llvm-project/cfe/trunk/lib/Basic/Version.cpp $";
+ const char *URLEnd = URL + strlen(URL);
+
+ const char *End = strstr(URL, "/lib/Basic");
+ if (End)
+ URLEnd = End;
+
+ End = strstr(URL, "/clang/tools/clang");
+ if (End)
+ URLEnd = End;
+
+ const char *Begin = strstr(URL, "cfe/");
+ if (Begin)
+ return llvm::StringRef(Begin + 4, URLEnd - Begin - 4);
+
+ return llvm::StringRef(URL, URLEnd - URL);
+}
+
+
+llvm::StringRef getClangRevision() {
+#ifndef SVN_REVISION
+ // Subversion was not available at build time?
+ return llvm::StringRef();
+#else
+ static std::string revision;
+ if (revision.empty()) {
+ llvm::raw_string_ostream OS(revision);
+ OS << strtol(SVN_REVISION, 0, 10);
+ }
+ return revision;
+#endif
+}
+
+llvm::StringRef getClangFullRepositoryVersion() {
+ static std::string buf;
+ if (buf.empty()) {
+ llvm::raw_string_ostream OS(buf);
+ OS << getClangRepositoryPath();
+ llvm::StringRef Revision = getClangRevision();
+ if (!Revision.empty())
+ OS << ' ' << Revision;
+ }
+ return buf;
+}
+
+const char *getClangFullVersion() {
+ static std::string buf;
+ if (buf.empty()) {
+ llvm::raw_string_ostream OS(buf);
+#ifdef CLANG_VENDOR
+ OS << CLANG_VENDOR;
+#endif
+ OS << "clang version " CLANG_VERSION_STRING " ("
+ << getClangFullRepositoryVersion() << ')';
+ }
+ return buf.c_str();
+}
+
+} // end namespace clang