Version.cpp source code [clang_source_code/lib/Basic/Version.cpp]

1	//===- Version.cpp - Clang Version Number ------------------------ C++ --===//
2	//
3	// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4	// See https://llvm.org/LICENSE.txt for license information.
5	// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6	//
7	//===----------------------------------------------------------------------===//
8	//
9	// This file defines several version-related utility functions for Clang.
10	//
11	//===----------------------------------------------------------------------===//
12
13	#include "clang/Basic/Version.h"
14	#include "clang/Basic/LLVM.h"
15	#include "clang/Config/config.h"
16	#include "llvm/Support/raw_ostream.h"
17	#include <cstdlib>
18	#include <cstring>
19
20	#ifdef HAVE_VCS_VERSION_INC
21	#include "VCSVersion.inc"
22	#endif
23
24	namespace clang {
25
26	std::string getClangRepositoryPath() {
27	#if defined(CLANG_REPOSITORY_STRING)
28	return CLANG_REPOSITORY_STRING;
29	#else
30	#ifdef CLANG_REPOSITORY
31	StringRef URL(CLANG_REPOSITORY);
32	#else
33	StringRef URL("");
34	#endif
35
36	// If the CLANG_REPOSITORY is empty, try to use the SVN keyword. This helps us
37	// pick up a tag in an SVN export, for example.
38	StringRef SVNRepository("$URL$");
39	if (URL.empty()) {
40	URL = SVNRepository.slice(SVNRepository.find(':'),
41	SVNRepository.find("/lib/Basic"));
42	}
43
44	// Strip off version from a build from an integration branch.
45	URL = URL.slice(0, URL.find("/src/tools/clang"));
46
47	// Trim path prefix off, assuming path came from standard cfe path.
48	size_t Start = URL.find("cfe/");
49	if (Start != StringRef::npos)
50	URL = URL.substr(Start + 4);
51
52	return URL;
53	#endif
54	}
55
56	std::string getLLVMRepositoryPath() {
57	#ifdef LLVM_REPOSITORY
58	StringRef URL(LLVM_REPOSITORY);
59	#else
60	StringRef URL("");
61	#endif
62
63	// Trim path prefix off, assuming path came from standard llvm path.
64	// Leave "llvm/" prefix to distinguish the following llvm revision from the
65	// clang revision.
66	size_t Start = URL.find("llvm/");
67	if (Start != StringRef::npos)
68	URL = URL.substr(Start);
69
70	return URL;
71	}
72
73	std::string getClangRevision() {
74	#ifdef CLANG_REVISION
75	return CLANG_REVISION;
76	#else
77	return "";
78	#endif
79	}
80
81	std::string getLLVMRevision() {
82	#ifdef LLVM_REVISION
83	return LLVM_REVISION;
84	#else
85	return "";
86	#endif
87	}
88
89	std::string getClangFullRepositoryVersion() {
90	std::string buf;
91	llvm::raw_string_ostream OS(buf);
92	std::string Path = getClangRepositoryPath();
93	std::string Revision = getClangRevision();
94	if (!Path.empty() \|\| !Revision.empty()) {
95	OS << '(';
96	if (!Path.empty())
97	OS << Path;
98	if (!Revision.empty()) {
99	if (!Path.empty())
100	OS << ' ';
101	OS << Revision;
102	}
103	OS << ')';
104	}
105	// Support LLVM in a separate repository.
106	std::string LLVMRev = getLLVMRevision();
107	if (!LLVMRev.empty() && LLVMRev != Revision) {
108	OS << " (";
109	std::string LLVMRepo = getLLVMRepositoryPath();
110	if (!LLVMRepo.empty())
111	OS << LLVMRepo << ' ';
112	OS << LLVMRev << ')';
113	}
114	return OS.str();
115	}
116
117	std::string getClangFullVersion() {
118	return getClangToolFullVersion("clang");
119	}
120
121	std::string getClangToolFullVersion(StringRef ToolName) {
122	std::string buf;
123	llvm::raw_string_ostream OS(buf);
124	#ifdef CLANG_VENDOR
125	OS << CLANG_VENDOR;
126	#endif
127	OS << ToolName << " version " CLANG_VERSION_STRING " "
128	<< getClangFullRepositoryVersion();
129
130	// If vendor supplied, include the base LLVM version as well.
131	#ifdef CLANG_VENDOR
132	OS << " (based on " << BACKEND_PACKAGE_STRING << ")";
133	#endif
134
135	return OS.str();
136	}
137
138	std::string getClangFullCPPVersion() {
139	// The version string we report in __VERSION__ is just a compacted version of
140	// the one we report on the command line.
141	std::string buf;
142	llvm::raw_string_ostream OS(buf);
143	#ifdef CLANG_VENDOR
144	OS << CLANG_VENDOR;
145	#endif
146	OS << "Clang " CLANG_VERSION_STRING " " << getClangFullRepositoryVersion();
147	return OS.str();
148	}
149
150	} // end namespace clang
151

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