1 //===- llvm-cov.cpp - LLVM coverage tool ----------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // llvm-cov is a command line tools to analyze and report coverage information.
12 //===----------------------------------------------------------------------===//
14 #include "llvm/ADT/StringRef.h"
15 #include "llvm/ADT/StringSwitch.h"
16 #include "llvm/Support/Path.h"
17 #include "llvm/Support/raw_ostream.h"
22 /// \brief The main entry point for the 'show' subcommand.
23 int showMain(int argc, const char *argv[]);
25 /// \brief The main entry point for the 'report' subcommand.
26 int reportMain(int argc, const char *argv[]);
28 /// \brief The main entry point for the 'convert-for-testing' subcommand.
29 int convertForTestingMain(int argc, const char *argv[]);
31 /// \brief The main entry point for the gcov compatible coverage tool.
32 int gcovMain(int argc, const char *argv[]);
34 /// \brief Top level help.
35 int helpMain(int argc, const char *argv[]) {
36 errs() << "OVERVIEW: LLVM code coverage tool\n\n"
37 << "USAGE: llvm-cov {gcov|report|show}\n";
41 int main(int argc, const char **argv) {
42 // If argv[0] is or ends with 'gcov', always be gcov compatible
43 if (sys::path::stem(argv[0]).endswith_lower("gcov"))
44 return gcovMain(argc, argv);
46 // Check if we are invoking a specific tool command.
48 typedef int (*MainFunction)(int, const char *[]);
49 MainFunction Func = StringSwitch<MainFunction>(argv[1])
50 .Case("convert-for-testing", convertForTestingMain)
51 .Case("gcov", gcovMain)
52 .Case("report", reportMain)
53 .Case("show", showMain)
54 .Cases("-h", "-help", "--help", helpMain)
58 std::string Invocation = std::string(argv[0]) + " " + argv[1];
59 argv[1] = Invocation.c_str();
60 return Func(argc - 1, argv + 1);
64 // Give a warning and fall back to gcov
65 errs().changeColor(raw_ostream::RED);
67 // Assume that argv[1] wasn't a command when it stats with a '-' or is a
68 // filename (i.e. contains a '.')
69 if (argc > 1 && !StringRef(argv[1]).startswith("-") &&
70 StringRef(argv[1]).find(".") == StringRef::npos)
71 errs() << " Unrecognized command '" << argv[1] << "'.";
72 errs() << " Using the gcov compatible mode "
73 "(this behaviour may be dropped in the future).";
77 return gcovMain(argc, argv);