clang/lib/Basic/Version.cpp

//===- 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() {
#ifdef SVN_REPOSITORY
  if (SVN_REPOSITORY[0] != '\0') {
    static const char URL[] = SVN_REPOSITORY;
    const char *URLEnd = URL + strlen(URL) - 1;

    // Strip off version from a build from an integration branch.
    const char *End = strstr(URL, "/src/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);
  }
#endif
  return "";
}

llvm::StringRef getClangRevision() {
#ifdef SVN_REVISION
  if (SVN_REVISION[0] != '\0') {
    std::string revision;
    llvm::raw_string_ostream OS(revision);
    OS << strtol(SVN_REVISION, 0, 10);
    return OS.str();
  }
#endif
  return "";
}

std::string getClangFullRepositoryVersion() {
  std::string buf;
  llvm::raw_string_ostream OS(buf);
  const llvm::StringRef &Path = getClangRepositoryPath();
  const llvm::StringRef &Revision = getClangRevision();
  if (!Path.empty())
    OS << Path;
  if (!Revision.empty()) {
    if (!Path.empty())
      OS << ' ';
    OS << Revision;
  }
  return OS.str();
}
  
std::string getClangFullVersion() {
  std::string buf;
  llvm::raw_string_ostream OS(buf);
#ifdef CLANG_VENDOR
  OS << CLANG_VENDOR;
#endif
  OS << "clang version " CLANG_VERSION_STRING " ("
     << getClangFullRepositoryVersion() << ')';
  return OS.str();
}

} // end namespace clang