C++ raw_ostream::resetColor方法代码示例

/*static*/ void
TextDiagnostic::printDiagnosticMessage(raw_ostream &OS,
                                       DiagnosticsEngine::Level Level,
                                       StringRef Message,
                                       unsigned CurrentColumn, unsigned Columns,
                                       bool ShowColors) {
  bool Bold = false;
  if (ShowColors) {
    // Print warnings, errors and fatal errors in bold, no color
    switch (Level) {
    case DiagnosticsEngine::Warning:
    case DiagnosticsEngine::Error:
    case DiagnosticsEngine::Fatal:
      OS.changeColor(savedColor, true);
      Bold = true;
      break;
    default: break; //don't bold notes
    }
  }

  if (Columns)
    printWordWrapped(OS, Message, Columns, CurrentColumn, Bold);
  else {
    bool Normal = true;
    applyTemplateHighlighting(OS, Message, Normal, Bold);
    assert(Normal && "Formatting should have returned to normal");
  }

  if (ShowColors)
    OS.resetColor();
  OS << '\n';
}

/*static*/
void TextDiagnostic::printDiagnosticMessage(raw_ostream &OS,
                                            bool IsSupplemental,
                                            StringRef Message,
                                            unsigned CurrentColumn,
                                            unsigned Columns, bool ShowColors) {
  bool Bold = false;
  if (ShowColors && !IsSupplemental) {
    // Print primary diagnostic messages in bold and without color, to visually
    // indicate the transition from continuation notes and other output.
    OS.changeColor(savedColor, true);
    Bold = true;
  }

  if (Columns)
    printWordWrapped(OS, Message, Columns, CurrentColumn, Bold);
  else {
    bool Normal = true;
    applyTemplateHighlighting(OS, Message, Normal, Bold);
    assert(Normal && "Formatting should have returned to normal");
  }

  if (ShowColors)
    OS.resetColor();
  OS << '\n';
}

/*static*/ void
TextDiagnostic::printDiagnosticMessage(raw_ostream &OS,
                                       DiagnosticsEngine::Level Level,
                                       StringRef Message,
                                       unsigned CurrentColumn, unsigned Columns,
                                       bool ShowColors) {
  if (ShowColors) {
    // Print warnings, errors and fatal errors in bold, no color
    switch (Level) {
    case DiagnosticsEngine::Warning: OS.changeColor(savedColor, true); break;
    case DiagnosticsEngine::Error:   OS.changeColor(savedColor, true); break;
    case DiagnosticsEngine::Fatal:   OS.changeColor(savedColor, true); break;
    default: break; //don't bold notes
    }
  }

  if (Columns)
    printWordWrapped(OS, Message, Columns, CurrentColumn);
  else
    OS << Message;

  if (ShowColors)
    OS.resetColor();
  OS << '\n';
}

/// \brief Add highlights to differences in template strings.
static void applyTemplateHighlighting(raw_ostream &OS, StringRef Str,
                                      bool &Normal, bool Bold) {
  for (unsigned i = 0, e = Str.size(); i < e; ++i)
    if (Str[i] != ToggleHighlight) {
      OS << Str[i];
    } else {
      if (Normal)
        OS.changeColor(templateColor, true);
      else {
        OS.resetColor();
        if (Bold)
          OS.changeColor(savedColor, true);
      }
      Normal = !Normal;
    }
}

void SourceCoverageView::renderLine(raw_ostream &OS, StringRef Line,
                                    ArrayRef<HighlightRange> Ranges) {
  if (Ranges.empty()) {
    OS << Line << "\n";
    return;
  }
  if (Line.empty())
    Line = " ";

  unsigned PrevColumnStart = 0;
  unsigned Start = 1;
  for (const auto &Range : Ranges) {
    if (PrevColumnStart == Range.ColumnStart)
      continue;

    // Show the unhighlighted part
    unsigned ColumnStart = PrevColumnStart = Range.ColumnStart;
    OS << Line.substr(Start - 1, ColumnStart - Start);

    // Show the highlighted part
    auto Color = Range.Kind == HighlightRange::NotCovered ? raw_ostream::RED
                                                          : raw_ostream::CYAN;
    OS.changeColor(Color, false, true);
    unsigned ColumnEnd = std::min(Range.ColumnEnd, (unsigned)Line.size() + 1);
    OS << Line.substr(ColumnStart - 1, ColumnEnd - ColumnStart);
    Start = ColumnEnd;
    OS.resetColor();
  }

  // Show the rest of the line
  OS << Line.substr(Start - 1, Line.size() - Start + 1);
  OS << "\n";

  if (Options.Debug) {
    for (const auto &Range : Ranges) {
      errs() << "Highlighted line " << Range.Line << ", " << Range.ColumnStart
             << " -> ";
      if (Range.ColumnEnd == std::numeric_limits<unsigned>::max()) {
        errs() << "?\n";
      } else {
        errs() << Range.ColumnEnd << "\n";
      }
    }
  }
}

/// \brief Add highlights to differences in template strings.
static void applyTemplateHighlighting(raw_ostream &OS, StringRef Str,
                                      bool &Normal, bool Bold) {
  while (1) {
    size_t Pos = Str.find(ToggleHighlight);
    OS << Str.slice(0, Pos);
    if (Pos == StringRef::npos)
      break;

    Str = Str.substr(Pos + 1);
    if (Normal)
      OS.changeColor(templateColor, true);
    else {
      OS.resetColor();
      if (Bold)
        OS.changeColor(savedColor, true);
    }
    Normal = !Normal;
  }
}

/*static*/ void
TextDiagnostic::printDiagnosticLevel(raw_ostream &OS,
                                     DiagnosticsEngine::Level Level,
                                     bool ShowColors,
                                     bool CLFallbackMode) {
  if (ShowColors) {
    // Print diagnostic category in bold and color
    switch (Level) {
    case DiagnosticsEngine::Ignored:
      llvm_unreachable("Invalid diagnostic type");
    case DiagnosticsEngine::Note:    OS.changeColor(noteColor, true); break;
    case DiagnosticsEngine::Remark:  OS.changeColor(remarkColor, true); break;
    case DiagnosticsEngine::Warning: OS.changeColor(warningColor, true); break;
    case DiagnosticsEngine::Error:   OS.changeColor(errorColor, true); break;
    case DiagnosticsEngine::Fatal:   OS.changeColor(fatalColor, true); break;
    }
  }

  switch (Level) {
  case DiagnosticsEngine::Ignored:
    llvm_unreachable("Invalid diagnostic type");
  case DiagnosticsEngine::Note:    OS << "note"; break;
  case DiagnosticsEngine::Remark:  OS << "remark"; break;
  case DiagnosticsEngine::Warning: OS << "warning"; break;
  case DiagnosticsEngine::Error:   OS << "error"; break;
  case DiagnosticsEngine::Fatal:   OS << "fatal error"; break;
  }

  // In clang-cl /fallback mode, print diagnostics as "error(clang):". This
  // makes it more clear whether a message is coming from clang or cl.exe,
  // and it prevents MSBuild from concluding that the build failed just because
  // there is an "error:" in the output.
  if (CLFallbackMode)
    OS << "(clang)";

  OS << ": ";

  if (ShowColors)
    OS.resetColor();
}

void SchedulerStatistics::printSchedulerStats(raw_ostream &OS) const {
  OS << "\n\nSchedulers - "
     << "number of cycles where we saw N instructions issued:\n";
  OS << "[# issued], [# cycles]\n";

  const auto It =
      std::max_element(IssuedPerCycle.begin(), IssuedPerCycle.end());
  unsigned Index = std::distance(IssuedPerCycle.begin(), It);

  bool HasColors = OS.has_colors();
  for (unsigned I = 0, E = IssuedPerCycle.size(); I < E; ++I) {
    unsigned IPC = IssuedPerCycle[I];
    if (!IPC)
      continue;

    if (I == Index && HasColors)
      OS.changeColor(raw_ostream::SAVEDCOLOR, true, false);

    OS << " " << I << ",          " << IPC << "  ("
       << format("%.1f", ((double)IPC / NumCycles) * 100) << "%)\n";
    if (HasColors)
      OS.resetColor();
  }
}

void SMDiagnostic::print(const char *ProgName, raw_ostream &S, bool ShowColors,
                         bool ShowKindLabel) const {
  // Display colors only if OS supports colors.
  ShowColors &= S.has_colors();

  if (ShowColors)
    S.changeColor(raw_ostream::SAVEDCOLOR, true);

  if (ProgName && ProgName[0])
    S << ProgName << ": ";

  if (!Filename.empty()) {
    if (Filename == "-")
      S << "<stdin>";
    else
      S << Filename;

    if (LineNo != -1) {
      S << ':' << LineNo;
      if (ColumnNo != -1)
        S << ':' << (ColumnNo+1);
    }
    S << ": ";
  }

  if (ShowKindLabel) {
    switch (Kind) {
    case SourceMgr::DK_Error:
      if (ShowColors)
        S.changeColor(raw_ostream::RED, true);
      S << "error: ";
      break;
    case SourceMgr::DK_Warning:
      if (ShowColors)
        S.changeColor(raw_ostream::MAGENTA, true);
      S << "warning: ";
      break;
    case SourceMgr::DK_Note:
      if (ShowColors)
        S.changeColor(raw_ostream::BLACK, true);
      S << "note: ";
      break;
    }

    if (ShowColors) {
      S.resetColor();
      S.changeColor(raw_ostream::SAVEDCOLOR, true);
    }
  }

  S << Message << '\n';

  if (ShowColors)
    S.resetColor();

  if (LineNo == -1 || ColumnNo == -1)
    return;

  // FIXME: If there are multibyte or multi-column characters in the source, all
  // our ranges will be wrong. To do this properly, we'll need a byte-to-column
  // map like Clang's TextDiagnostic. For now, we'll just handle tabs by
  // expanding them later, and bail out rather than show incorrect ranges and
  // misaligned fixits for any other odd characters.
  if (std::find_if(LineContents.begin(), LineContents.end(), isNonASCII) !=
      LineContents.end()) {
    printSourceLine(S, LineContents);
    return;
  }
  size_t NumColumns = LineContents.size();

  // Build the line with the caret and ranges.
  std::string CaretLine(NumColumns+1, ' ');
  
  // Expand any ranges.
  for (unsigned r = 0, e = Ranges.size(); r != e; ++r) {
    std::pair<unsigned, unsigned> R = Ranges[r];
    std::fill(&CaretLine[R.first],
              &CaretLine[std::min((size_t)R.second, CaretLine.size())],
              '~');
  }

  // Add any fix-its.
  // FIXME: Find the beginning of the line properly for multibyte characters.
  std::string FixItInsertionLine;
  buildFixItLine(CaretLine, FixItInsertionLine, FixIts,
                 makeArrayRef(Loc.getPointer() - ColumnNo,
                              LineContents.size()));

  // Finally, plop on the caret.
  if (unsigned(ColumnNo) <= NumColumns)
    CaretLine[ColumnNo] = '^';
  else 
    CaretLine[NumColumns] = '^';
  
  // ... and remove trailing whitespace so the output doesn't wrap for it.  We
  // know that the line isn't completely empty because it has the caret in it at
  // least.
  CaretLine.erase(CaretLine.find_last_not_of(' ')+1);
  
  printSourceLine(S, LineContents);
//.........这里部分代码省略.........

static int printICE(int Res, const char **Argv, raw_ostream &Err,
                    bool insidebugreport,
                    int argc, const char **argv, const sys::Path* orig_err)
{
  Err << "Program arguments:";
  while (*Argv) {
    Err << " " << Argv[0];
    Argv++;
  }
  Err << "\n";
  Err.changeColor(raw_ostream::RED, true);
  Err << "\nInternal compiler error: ";
#ifdef LLVM_ON_UNIX
  Err << strsignal(Res);
#else
  Err << " killed by signal " << Res;
#endif
  Err << "!\n";
  Err.resetColor();
  Err.changeColor(raw_ostream::SAVEDCOLOR, true);
  if (insidebugreport)
    return 2;

  std::string prefix, prepath, tmperr, tarpath;
  prefix = getTmpDir();
  if (prefix.empty()) {
      Err << "Cannot open locate location to store temporary files\n";
      return 117;
  }
  tmperr = prefix + "/bugreport-preprocessed";
  prepath = prefix + "/bugreport-tmperr";
  tarpath = prefix + "/bugreport.tar";

  sys::Path Tmp(prepath);
  sys::Path TmpErr(tmperr);
  sys::Path TmpOut(tarpath);
  std::string ErrMsg;
  ErrMsg.clear();
  if (Tmp.createTemporaryFileOnDisk(true, &ErrMsg) ||
      TmpErr.createTemporaryFileOnDisk(true, &ErrMsg) ||
      TmpOut.createTemporaryFileOnDisk(true, &ErrMsg)) {
    Err << "Unable to create temporary file for bugreport: " << ErrMsg << "\n\n";
    Err << "Please submit a bugreport at http://bugs.clamav.net\n" ;
    Err << "Please include the full sourcecode that caused this internal compiler error and the full error message!\n";
  } else {
    ErrMsg.clear();
    raw_fd_ostream TmpErrF(TmpErr.c_str(), ErrMsg);
    // Create version info for bugreport
    CompileFile(argc, argv, &Tmp, &TmpErr, TmpErrF, true, true);
    // Create preprocessed file for bugreport
    CompileFile(argc, argv, &Tmp, &TmpErr, TmpErrF, true);
    TmpErrF.close();
    int fd = open(TmpOut.c_str(), O_WRONLY);
    if (fd < 0) {
      Err << "Cannot open file " << TmpOut.str() << ": " << strerror(errno) << 
        "\n";
    } else {
      chdir(orig_err->getDirname().str().c_str());
      tar_addfile(fd, orig_err->getLast().str().c_str());
      chdir(Tmp.getDirname().str().c_str());
      tar_addfile(fd, Tmp.getLast().str().c_str());
      chdir(TmpErr.getDirname().str().c_str());
      tar_addfile(fd, TmpErr.getLast().str().c_str());
      close(fd);
    }

    Tmp.eraseFromDisk();
    TmpErr.eraseFromDisk();
    Err << "Please submit a bugreport at http://bugs.clamav.net\n" ;
    Err << "Please compress and attach this file to the bugreport: " << TmpOut.str() << "\n";
  }

  Err.resetColor();
  return 42;
}