Version.cpp revision 55fc873017f10f6f566b182b70f6fc22aefa3464 
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/Config/config.h"
17#include "llvm/Support/raw_ostream.h"
18#include <cstdlib>
19#include <cstring>
20
21namespace clang {
22
23std::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
53std::string getLLVMRepositoryPath() {
54#ifdef LLVM_REPOSITORY
55  StringRef URL(LLVM_REPOSITORY);
56#else
57  StringRef URL("");
58#endif
59
60  // Trim path prefix off, assuming path came from standard llvm path.
61  // Leave "llvm/" prefix to distinguish the following llvm revision from the
62  // clang revision.
63  size_t Start = URL.find("llvm/");
64  if (Start != StringRef::npos)
65    URL = URL.substr(Start);
66
67  return URL;
68}
69
70std::string getClangRevision() {
71#ifdef SVN_REVISION
72  return SVN_REVISION;
73#else
74  return "";
75#endif
76}
77
78std::string getLLVMRevision() {
79#ifdef LLVM_REVISION
80  return LLVM_REVISION;
81#else
82  return "";
83#endif
84}
85
86std::string getClangFullRepositoryVersion() {
87  std::string buf;
88  llvm::raw_string_ostream OS(buf);
89  std::string Path = getClangRepositoryPath();
90  std::string Revision = getClangRevision();
91  if (!Path.empty() || !Revision.empty()) {
92    OS << '(';
93    if (!Path.empty())
94      OS << Path;
95    if (!Revision.empty()) {
96      if (!Path.empty())
97        OS << ' ';
98      OS << Revision;
99    }
100    OS << ')';
101  }
102  // Support LLVM in a separate repository.
103  std::string LLVMRev = getLLVMRevision();
104  if (!LLVMRev.empty() && LLVMRev != Revision) {
105    OS << " (";
106    std::string LLVMRepo = getLLVMRepositoryPath();
107    if (!LLVMRepo.empty())
108      OS << LLVMRepo << ' ';
109    OS << LLVMRev << ')';
110  }
111  return OS.str();
112}
113
114std::string getClangFullVersion() {
115  std::string buf;
116  llvm::raw_string_ostream OS(buf);
117#ifdef CLANG_VENDOR
118  OS << CLANG_VENDOR;
119#endif
120  OS << "clang version " CLANG_VERSION_STRING " "
121     << getClangFullRepositoryVersion();
122
123  // If vendor supplied, include the base LLVM version as well.
124#ifdef CLANG_VENDOR
125  OS << " (based on LLVM " << PACKAGE_VERSION << ")";
126#endif
127
128  return OS.str();
129}
130
131std::string getClangFullCPPVersion() {
132  // The version string we report in __VERSION__ is just a compacted version of
133  // the one we report on the command line.
134  std::string buf;
135  llvm::raw_string_ostream OS(buf);
136#ifdef CLANG_VENDOR
137  OS << CLANG_VENDOR;
138#endif
139  OS << "Clang " CLANG_VERSION_STRING " " << getClangFullRepositoryVersion();
140  return OS.str();
141}
142
143} // end namespace clang
144