lib/Basic/Version.cpp

   1 //===- Version.cpp - Clang Version Number -----------------------*- C++ -*-===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // This file defines several version-related utility functions for Clang.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "clang/Basic/Version.h"
  15 #include "llvm/Support/raw_ostream.h"
  16 #include "llvm/Config/config.h"
  17 #include <cstring>
  18 #include <cstdlib>
  19
  20 using namespace std;
  21
  22 namespace clang {
  23
  24 std::string getClangRepositoryPath() {
  25 #ifdef SVN_REPOSITORY
  26   llvm::StringRef URL(SVN_REPOSITORY);
  27 #else
  28   llvm::StringRef URL("");
  29 #endif
  30
  31   // If the SVN_REPOSITORY is empty, try to use the SVN keyword. This helps us
  32   // pick up a tag in an SVN export, for example.
  33   static llvm::StringRef SVNRepository("$URL$");
  34   if (URL.empty()) {
  35     URL = SVNRepository.slice(SVNRepository.find(':'),
  36                               SVNRepository.find("/lib/Basic"));
  37   }
  38
  39   // Strip off version from a build from an integration branch.
  40   URL = URL.slice(0, URL.find("/src/tools/clang"));
  41
  42   // Trim path prefix off, assuming path came from standard cfe path.
  43   size_t Start = URL.find("cfe/");
  44   if (Start != llvm::StringRef::npos)
  45     URL = URL.substr(Start + 4);
  46
  47   return URL;
  48 }
  49
  50 std::string getClangRevision() {
  51 #ifdef SVN_REVISION
  52   return SVN_REVISION;
  53 #else
  54   return "";
  55 #endif
  56 }
  57
  58 std::string getClangFullRepositoryVersion() {
  59   std::string buf;
  60   llvm::raw_string_ostream OS(buf);
  61   std::string Path = getClangRepositoryPath();
  62   std::string Revision = getClangRevision();
  63   if (!Path.empty())
  64     OS << Path;
  65   if (!Revision.empty()) {
  66     if (!Path.empty())
  67       OS << ' ';
  68     OS << Revision;
  69   }
  70   return OS.str();
  71 }
  72
  73 std::string getClangFullVersion() {
  74   std::string buf;
  75   llvm::raw_string_ostream OS(buf);
  76 #ifdef CLANG_VENDOR
  77   OS << CLANG_VENDOR;
  78 #endif
  79   OS << "clang version " CLANG_VERSION_STRING " ("
  80      << getClangFullRepositoryVersion() << ')';
  81
  82   // If vendor supplied, include the base LLVM version as well.
  83 #ifdef CLANG_VENDOR
  84   OS << " (based on LLVM " << PACKAGE_VERSION << ")";
  85 #endif
  86
  87   return OS.str();
  88 }
  89
  90 } // end namespace clang