1 //===- llvm-cov.cpp - LLVM coverage tool ----------------------------------===//
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 // llvm-cov is a command line tools to analyze and report coverage information.
11 //
12 //===----------------------------------------------------------------------===//
13
14 #include "llvm/ADT/StringRef.h"
15 #include "llvm/ADT/StringSwitch.h"
16 #include "llvm/Support/CommandLine.h"
17 #include "llvm/Support/Path.h"
18 #include "llvm/Support/Process.h"
19 #include "llvm/Support/raw_ostream.h"
20 #include <string>
21
22 using namespace llvm;
23
24 /// \brief The main entry point for the 'show' subcommand.
25 int showMain(int argc, const char *argv[]);
26
27 /// \brief The main entry point for the 'report' subcommand.
28 int reportMain(int argc, const char *argv[]);
29
30 /// \brief The main entry point for the 'convert-for-testing' subcommand.
31 int convertForTestingMain(int argc, const char *argv[]);
32
33 /// \brief The main entry point for the gcov compatible coverage tool.
34 int gcovMain(int argc, const char *argv[]);
35
36 /// \brief Top level help.
helpMain(int argc,const char * argv[])37 static int helpMain(int argc, const char *argv[]) {
38 errs() << "Usage: llvm-cov {gcov|report|show} [OPTION]...\n\n"
39 << "Shows code coverage information.\n\n"
40 << "Subcommands:\n"
41 << " gcov: Work with the gcov format.\n"
42 << " show: Annotate source files using instrprof style coverage.\n"
43 << " report: Summarize instrprof style coverage information.\n";
44 return 0;
45 }
46
47 /// \brief Top level version information.
versionMain(int argc,const char * argv[])48 static int versionMain(int argc, const char *argv[]) {
49 cl::PrintVersionMessage();
50 return 0;
51 }
52
main(int argc,const char ** argv)53 int main(int argc, const char **argv) {
54 // If argv[0] is or ends with 'gcov', always be gcov compatible
55 if (sys::path::stem(argv[0]).endswith_lower("gcov"))
56 return gcovMain(argc, argv);
57
58 // Check if we are invoking a specific tool command.
59 if (argc > 1) {
60 typedef int (*MainFunction)(int, const char *[]);
61 MainFunction Func = StringSwitch<MainFunction>(argv[1])
62 .Case("convert-for-testing", convertForTestingMain)
63 .Case("gcov", gcovMain)
64 .Case("report", reportMain)
65 .Case("show", showMain)
66 .Cases("-h", "-help", "--help", helpMain)
67 .Cases("-version", "--version", versionMain)
68 .Default(nullptr);
69
70 if (Func) {
71 std::string Invocation = std::string(argv[0]) + " " + argv[1];
72 argv[1] = Invocation.c_str();
73 return Func(argc - 1, argv + 1);
74 }
75 }
76
77 if (argc > 1) {
78 if (sys::Process::StandardErrHasColors())
79 errs().changeColor(raw_ostream::RED);
80 errs() << "Unrecognized command: " << argv[1] << ".\n\n";
81 if (sys::Process::StandardErrHasColors())
82 errs().resetColor();
83 }
84 helpMain(argc, argv);
85 return 1;
86 }
87