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/raw_ostream.h" 18 #include <string> 19 20 using namespace llvm; 21 22 /// \brief The main entry point for the 'show' subcommand. 23 int showMain(int argc, const char *argv[]); 24 25 /// \brief The main entry point for the 'report' subcommand. 26 int reportMain(int argc, const char *argv[]); 27 28 /// \brief The main entry point for the 'convert-for-testing' subcommand. 29 int convertForTestingMain(int argc, const char *argv[]); 30 31 /// \brief The main entry point for the gcov compatible coverage tool. 32 int gcovMain(int argc, const char *argv[]); 33 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"; 38 return 0; 39 } 40 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); 45 46 // Check if we are invoking a specific tool command. 47 if (argc > 1) { 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) 55 .Default(nullptr); 56 57 if (Func) { 58 std::string Invocation = std::string(argv[0]) + " " + argv[1]; 59 argv[1] = Invocation.c_str(); 60 return Func(argc - 1, argv + 1); 61 } 62 } 63 64 // Give a warning and fall back to gcov 65 errs().changeColor(raw_ostream::RED); 66 errs() << "warning:"; 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)."; 74 errs().resetColor(); 75 errs() << "\n"; 76 77 return gcovMain(argc, argv); 78 } 79