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