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/ManagedStatic.h"
18 #include "llvm/Support/Path.h"
19 #include "llvm/Support/PrettyStackTrace.h"
20 #include "llvm/Support/Process.h"
21 #include "llvm/Support/Signals.h"
22 #include "llvm/Support/raw_ostream.h"
23 #include <string>
24
25 using namespace llvm;
26
27 /// \brief The main entry point for the 'show' subcommand.
28 int showMain(int argc, const char *argv[]);
29
30 /// \brief The main entry point for the 'report' subcommand.
31 int reportMain(int argc, const char *argv[]);
32
33 /// \brief The main entry point for the 'convert-for-testing' subcommand.
34 int convertForTestingMain(int argc, const char *argv[]);
35
36 /// \brief The main entry point for the gcov compatible coverage tool.
37 int gcovMain(int argc, const char *argv[]);
38
39 /// \brief Top level help.
helpMain(int argc,const char * argv[])40 static int helpMain(int argc, const char *argv[]) {
41 errs() << "Usage: llvm-cov {gcov|report|show} [OPTION]...\n\n"
42 << "Shows code coverage information.\n\n"
43 << "Subcommands:\n"
44 << " gcov: Work with the gcov format.\n"
45 << " show: Annotate source files using instrprof style coverage.\n"
46 << " report: Summarize instrprof style coverage information.\n";
47 return 0;
48 }
49
50 /// \brief Top level version information.
versionMain(int argc,const char * argv[])51 static int versionMain(int argc, const char *argv[]) {
52 cl::PrintVersionMessage();
53 return 0;
54 }
55
main(int argc,const char ** argv)56 int main(int argc, const char **argv) {
57 // Print a stack trace if we signal out.
58 sys::PrintStackTraceOnErrorSignal(argv[0]);
59 PrettyStackTraceProgram X(argc, argv);
60 llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
61
62 // If argv[0] is or ends with 'gcov', always be gcov compatible
63 if (sys::path::stem(argv[0]).endswith_lower("gcov"))
64 return gcovMain(argc, argv);
65
66 // Check if we are invoking a specific tool command.
67 if (argc > 1) {
68 typedef int (*MainFunction)(int, const char *[]);
69 MainFunction Func = StringSwitch<MainFunction>(argv[1])
70 .Case("convert-for-testing", convertForTestingMain)
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