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llvm-cov: Very basic top level help

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llvm-svn: 220926
This commit is contained in:
Justin Bogner 2014-10-30 20:29:48 +00:00
parent d5ee9ddca8
commit a5264f6d37
1 changed files with 17 additions and 11 deletions
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28
tools/llvm-cov/llvm-cov.cpp
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@ -12,6 +12,7 @@
//===----------------------------------------------------------------------===//
#include "llvm/ADT/StringRef.h"
#include "llvm/ADT/StringSwitch.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Support/Path.h"
#include <string>
@ -30,6 +31,13 @@ int convert_for_testing_main(int argc, const char **argv);
/// \brief The main entry point for the gcov compatible coverage tool.
int gcov_main(int argc, const char **argv);
/// \brief Top level help.
int help_main(int argc, const char **argv) {
errs() << "OVERVIEW: LLVM code coverage tool\n\n"
<< "USAGE: llvm-cov {gcov|report|show}\n";
return 0;
}
int main(int argc, const char **argv) {
// If argv[0] is or ends with 'gcov', always be gcov compatible
if (sys::path::stem(argv[0]).endswith_lower("gcov"))
@ -37,17 +45,15 @@ int main(int argc, const char **argv) {
// Check if we are invoking a specific tool command.
if (argc > 1) {
int (*func)(int, const char **) = nullptr;
StringRef command = argv[1];
if (command.equals_lower("show"))
func = show_main;
else if (command.equals_lower("report"))
func = report_main;
else if (command.equals_lower("convert-for-testing"))
func = convert_for_testing_main;
else if (command.equals_lower("gcov"))
func = gcov_main;
typedef int (*MainFunction)(int, const char **);
MainFunction func =
StringSwitch<MainFunction>(argv[1])
.Case("convert-for-testing", convert_for_testing_main)
.Case("gcov", gcov_main)
.Case("report", report_main)
.Case("show", show_main)
.Cases("-h", "-help", "--help", help_main)
.Default(nullptr);
if (func) {
std::string Invocation = std::string(argv[0]) + " " + argv[1];