[llvm-cov] Disable name and path truncation
[oota-llvm.git] / tools / llvm-cov / llvm-cov.cpp
index be8d1c903666c7a7e206f3046804362128259304..8c5acaef63b2561ca8518d57fc1a7c22fd708727 100644 (file)
 //
 //===----------------------------------------------------------------------===//
 
-#include "llvm/ADT/OwningPtr.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/ADT/StringSwitch.h"
 #include "llvm/Support/CommandLine.h"
-#include "llvm/Support/GCOV.h"
-#include "llvm/Support/ManagedStatic.h"
-#include "llvm/Support/MemoryObject.h"
-#include "llvm/Support/PrettyStackTrace.h"
-#include "llvm/Support/Signals.h"
-#include "llvm/Support/system_error.h"
-using namespace llvm;
-
-static cl::opt<std::string> SourceFile(cl::Positional, cl::Required,
-                                       cl::desc("SOURCEFILE"));
-
-static cl::opt<bool> AllBlocks("a", cl::init(false),
-                               cl::desc("Display all basic blocks"));
-static cl::alias AllBlocksA("all-blocks", cl::aliasopt(AllBlocks));
-
-static cl::opt<bool> BranchProb("b", cl::init(false),
-                                cl::desc("Display branch probabilities"));
-static cl::alias BranchProbA("branch-probabilities", cl::aliasopt(BranchProb));
-
-static cl::opt<bool> BranchCount("c", cl::init(false),
-                                 cl::desc("Display branch counts instead "
-                                           "of percentages (requires -b)"));
-static cl::alias BranchCountA("branch-counts", cl::aliasopt(BranchCount));
+#include "llvm/Support/Path.h"
+#include "llvm/Support/Process.h"
+#include "llvm/Support/raw_ostream.h"
+#include <string>
 
-static cl::opt<bool> FuncSummary("f", cl::init(false),
-                                 cl::desc("Show coverage for each function"));
-static cl::alias FuncSummaryA("function-summaries", cl::aliasopt(FuncSummary));
-
-static cl::opt<bool> UncondBranch("u", cl::init(false),
-                                  cl::desc("Display unconditional branch info "
-                                           "(requires -b)"));
-static cl::alias UncondBranchA("unconditional-branches",
-                               cl::aliasopt(UncondBranch));
+using namespace llvm;
 
-static cl::OptionCategory DebugCat("Internal and debugging options");
-static cl::opt<bool> DumpGCOV("dump", cl::init(false), cl::cat(DebugCat),
-                              cl::desc("Dump the gcov file to stderr"));
-static cl::opt<std::string> InputGCNO("gcno", cl::cat(DebugCat), cl::init(""),
-                                      cl::desc("Override inferred gcno file"));
-static cl::opt<std::string> InputGCDA("gcda", cl::cat(DebugCat), cl::init(""),
-                                      cl::desc("Override inferred gcda file"));
+/// \brief The main entry point for the 'show' subcommand.
+int showMain(int argc, const char *argv[]);
 
-//===----------------------------------------------------------------------===//
-int main(int argc, char **argv) {
-  // Print a stack trace if we signal out.
-  sys::PrintStackTraceOnErrorSignal();
-  PrettyStackTraceProgram X(argc, argv);
-  llvm_shutdown_obj Y;  // Call llvm_shutdown() on exit.
+/// \brief The main entry point for the 'report' subcommand.
+int reportMain(int argc, const char *argv[]);
 
-  cl::ParseCommandLineOptions(argc, argv, "LLVM code coverage tool\n");
+/// \brief The main entry point for the 'convert-for-testing' subcommand.
+int convertForTestingMain(int argc, const char *argv[]);
 
-  if (InputGCNO.empty())
-    InputGCNO = SourceFile.substr(0, SourceFile.rfind(".")) + ".gcno";
-  if (InputGCDA.empty())
-    InputGCDA = SourceFile.substr(0, SourceFile.rfind(".")) + ".gcda";
+/// \brief The main entry point for the gcov compatible coverage tool.
+int gcovMain(int argc, const char *argv[]);
 
-  GCOVFile GF;
+/// \brief Top level help.
+static int helpMain(int argc, const char *argv[]) {
+  errs() << "Usage: llvm-cov {gcov|report|show} [OPTION]...\n\n"
+         << "Shows code coverage information.\n\n"
+         << "Subcommands:\n"
+         << "  gcov:   Work with the gcov format.\n"
+         << "  show:   Annotate source files using instrprof style coverage.\n"
+         << "  report: Summarize instrprof style coverage information.\n";
+  return 0;
+}
 
-  OwningPtr<MemoryBuffer> GCNO_Buff;
-  if (error_code ec = MemoryBuffer::getFileOrSTDIN(InputGCNO, GCNO_Buff)) {
-    errs() << InputGCNO << ": " << ec.message() << "\n";
-    return 1;
-  }
-  GCOVBuffer GCNO_GB(GCNO_Buff.get());
-  if (!GF.readGCNO(GCNO_GB)) {
-    errs() << "Invalid .gcno File!\n";
-    return 1;
-  }
+/// \brief Top level version information.
+static int versionMain(int argc, const char *argv[]) {
+  cl::PrintVersionMessage();
+  return 0;
+}
 
-  OwningPtr<MemoryBuffer> GCDA_Buff;
-  if (error_code ec = MemoryBuffer::getFileOrSTDIN(InputGCDA, GCDA_Buff)) {
-    if (ec != errc::no_such_file_or_directory) {
-      errs() << InputGCDA << ": " << ec.message() << "\n";
-      return 1;
-    }
-    // Clear the filename to make it clear we didn't read anything.
-    InputGCDA = "-";
-  } else {
-    GCOVBuffer GCDA_GB(GCDA_Buff.get());
-    if (!GF.readGCDA(GCDA_GB)) {
-      errs() << "Invalid .gcda File!\n";
-      return 1;
+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"))
+    return gcovMain(argc, argv);
+
+  // Check if we are invoking a specific tool command.
+  if (argc > 1) {
+    typedef int (*MainFunction)(int, const char *[]);
+    MainFunction Func = StringSwitch<MainFunction>(argv[1])
+                            .Case("convert-for-testing", convertForTestingMain)
+                            .Case("gcov", gcovMain)
+                            .Case("report", reportMain)
+                            .Case("show", showMain)
+                            .Cases("-h", "-help", "--help", helpMain)
+                            .Cases("-version", "--version", versionMain)
+                            .Default(nullptr);
+
+    if (Func) {
+      std::string Invocation = std::string(argv[0]) + " " + argv[1];
+      argv[1] = Invocation.c_str();
+      return Func(argc - 1, argv + 1);
     }
   }
 
-  if (DumpGCOV)
-    GF.dump();
-
-  GCOVOptions Options(AllBlocks, BranchProb, BranchCount, FuncSummary,
-                      UncondBranch);
-  FileInfo FI(Options);
-  GF.collectLineCounts(FI);
-  FI.print(InputGCNO, InputGCDA);
-  return 0;
+  if (argc > 1) {
+    if (sys::Process::StandardErrHasColors())
+      errs().changeColor(raw_ostream::RED);
+    errs() << "Unrecognized command: " << argv[1] << ".\n\n";
+    if (sys::Process::StandardErrHasColors())
+      errs().resetColor();
+  }
+  helpMain(argc, argv);
+  return 1;
 }