95 lines · cpp
1//===- llvm-cov.cpp - LLVM coverage tool ----------------------------------===//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-exception6//7//===----------------------------------------------------------------------===//8//9// llvm-cov is a command line tools to analyze and report coverage information.10//11//===----------------------------------------------------------------------===//12 13#include "llvm/ADT/StringRef.h"14#include "llvm/ADT/StringSwitch.h"15#include "llvm/Support/CommandLine.h"16#include "llvm/Support/InitLLVM.h"17#include "llvm/Support/Path.h"18#include "llvm/Support/Process.h"19#include "llvm/Support/raw_ostream.h"20#include <string>21 22using namespace llvm;23 24/// The main entry point for the 'show' subcommand.25int showMain(int argc, const char *argv[]);26 27/// The main entry point for the 'report' subcommand.28int reportMain(int argc, const char *argv[]);29 30/// The main entry point for the 'export' subcommand.31int exportMain(int argc, const char *argv[]);32 33/// The main entry point for the 'convert-for-testing' subcommand.34int convertForTestingMain(int argc, const char *argv[]);35 36/// The main entry point for the gcov compatible coverage tool.37int gcovMain(int argc, const char *argv[]);38 39/// Top level help.40static int helpMain(int argc, const char *argv[]) {41 errs() << "Usage: llvm-cov {export|gcov|report|show} [OPTION]...\n\n"42 << "Shows code coverage information.\n\n"43 << "Subcommands:\n"44 << " export: Export instrprof file to structured format.\n"45 << " gcov: Work with the gcov format.\n"46 << " report: Summarize instrprof style coverage information.\n"47 << " show: Annotate source files using instrprof style coverage.\n";48 49 return 0;50}51 52/// Top level version information.53static int versionMain(int argc, const char *argv[]) {54 cl::PrintVersionMessage();55 return 0;56}57 58int main(int argc, const char **argv) {59 InitLLVM X(argc, argv);60 61 // If argv[0] is or ends with 'gcov', always be gcov compatible62 if (sys::path::stem(argv[0]).ends_with_insensitive("gcov"))63 return gcovMain(argc, argv);64 65 // Check if we are invoking a specific tool command.66 if (argc > 1) {67 typedef int (*MainFunction)(int, const char *[]);68 MainFunction Func = StringSwitch<MainFunction>(argv[1])69 .Case("convert-for-testing", convertForTestingMain)70 .Case("export", exportMain)71 .Case("gcov", gcovMain)72 .Case("report", reportMain)73 .Case("show", showMain)74 .Cases({"-h", "-help", "--help"}, helpMain)75 .Cases({"-version", "--version"}, versionMain)76 .Default(nullptr);77 78 if (Func) {79 std::string Invocation = std::string(argv[0]) + " " + argv[1];80 argv[1] = Invocation.c_str();81 return Func(argc - 1, argv + 1);82 }83 }84 85 if (argc > 1) {86 if (sys::Process::StandardErrHasColors())87 errs().changeColor(raw_ostream::RED);88 errs() << "Unrecognized command: " << argv[1] << ".\n\n";89 if (sys::Process::StandardErrHasColors())90 errs().resetColor();91 }92 helpMain(argc, argv);93 return 1;94}95