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
91