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 "clang/Basic/LLVM.h"
16 #include "llvm/Support/raw_ostream.h"
17 #include "llvm/Config/config.h"
18 #include <cstring>
19 #include <cstdlib>
20 
21 namespace clang {
22 
23 std::string getClangRepositoryPath() {
24 #if defined(CLANG_REPOSITORY_STRING)
25   return CLANG_REPOSITORY_STRING;
26 #else
27 #ifdef SVN_REPOSITORY
28   StringRef URL(SVN_REPOSITORY);
29 #else
30   StringRef URL("");
31 #endif
32 
33   // If the SVN_REPOSITORY is empty, try to use the SVN keyword. This helps us
34   // pick up a tag in an SVN export, for example.
35   static StringRef SVNRepository("$URL$");
36   if (URL.empty()) {
37     URL = SVNRepository.slice(SVNRepository.find(':'),
38                               SVNRepository.find("/lib/Basic"));
39   }
40 
41   // Strip off version from a build from an integration branch.
42   URL = URL.slice(0, URL.find("/src/tools/clang"));
43 
44   // Trim path prefix off, assuming path came from standard cfe path.
45   size_t Start = URL.find("cfe/");
46   if (Start != StringRef::npos)
47     URL = URL.substr(Start + 4);
48 
49   return URL;
50 #endif
51 }
52 
53 std::string getClangRevision() {
54 #ifdef SVN_REVISION
55   return SVN_REVISION;
56 #else
57   return "";
58 #endif
59 }
60 
61 std::string getClangFullRepositoryVersion() {
62   std::string buf;
63   llvm::raw_string_ostream OS(buf);
64   std::string Path = getClangRepositoryPath();
65   std::string Revision = getClangRevision();
66   if (!Path.empty())
67     OS << Path;
68   if (!Revision.empty()) {
69     if (!Path.empty())
70       OS << ' ';
71     OS << Revision;
72   }
73   return OS.str();
74 }
75 
76 std::string getClangFullVersion() {
77   std::string buf;
78   llvm::raw_string_ostream OS(buf);
79 #ifdef CLANG_VENDOR
80   OS << CLANG_VENDOR;
81 #endif
82   OS << "clang version " CLANG_VERSION_STRING " ("
83      << getClangFullRepositoryVersion() << ')';
84 
85   // If vendor supplied, include the base LLVM version as well.
86 #ifdef CLANG_VENDOR
87   OS << " (based on LLVM " << PACKAGE_VERSION << ")";
88 #endif
89 
90   return OS.str();
91 }
92 
93 std::string getClangFullCPPVersion() {
94   // The version string we report in __VERSION__ is just a compacted version of
95   // the one we report on the command line.
96   std::string buf;
97   llvm::raw_string_ostream OS(buf);
98 #ifdef CLANG_VENDOR
99   OS << CLANG_VENDOR;
100 #endif
101   OS << "Clang " CLANG_VERSION_STRING " ("
102      << getClangFullRepositoryVersion() << ')';
103   return OS.str();
104 }
105 
106 } // end namespace clang
107