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 <cstring>
17 #include <cstdlib>
18 
19 using namespace std;
20 
21 namespace clang {
22 
23 llvm::StringRef getClangRepositoryPath() {
24   static const char URL[] = "$URL$";
25   const char *URLEnd = URL + strlen(URL);
26 
27   const char *End = strstr(URL, "/lib/Basic");
28   if (End)
29     URLEnd = End;
30 
31   End = strstr(URL, "/clang/tools/clang");
32   if (End)
33     URLEnd = End;
34 
35   const char *Begin = strstr(URL, "cfe/");
36   if (Begin)
37     return llvm::StringRef(Begin + 4, URLEnd - Begin - 4);
38 
39   return llvm::StringRef(URL, URLEnd - URL);
40 }
41 
42 std::string getClangRevision() {
43 #ifndef SVN_REVISION
44   // Subversion was not available at build time?
45   return "";
46 #else
47   std::string revision;
48   llvm::raw_string_ostream OS(revision);
49   OS << strtol(SVN_REVISION, 0, 10);
50   return revision;
51 #endif
52 }
53 
54 std::string getClangFullRepositoryVersion() {
55   std::string buf;
56   llvm::raw_string_ostream OS(buf);
57   OS << getClangRepositoryPath();
58   const std::string &Revision = getClangRevision();
59   if (!Revision.empty())
60     OS << ' ' << Revision;
61   return buf;
62 }
63 
64 std::string getClangFullVersion() {
65   std::string buf;
66   llvm::raw_string_ostream OS(buf);
67 #ifdef CLANG_VENDOR
68   OS << CLANG_VENDOR;
69 #endif
70   OS << "clang version " CLANG_VERSION_STRING " ("
71      << getClangFullRepositoryVersion() << ')';
72   return buf;
73 }
74 
75 } // end namespace clang
76