flutter_flutter/mojo/edk/util/string_printf.h

39 lines
1.2 KiB
C++

// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// |printf()|-like formatting functions that output/append to C++ strings.
//
// TODO(vtl): We don't have the |PRINTF_FORMAT()| macros/warnings like
// Chromium's version -- should we? (I've rarely seen them being useful.)
#ifndef MOJO_EDK_UTIL_STRING_PRINTF_H_
#define MOJO_EDK_UTIL_STRING_PRINTF_H_
#include <stdarg.h>
#include <string>
#include "mojo/public/c/system/macros.h"
namespace mojo {
namespace util {
// Formats |printf()|-like input and returns it as an |std::string|.
std::string StringPrintf(const char* format, ...) MOJO_WARN_UNUSED_RESULT;
// Formats |vprintf()|-like input and returns it as an |std::string|.
std::string StringVPrintf(const char* format,
va_list ap) MOJO_WARN_UNUSED_RESULT;
// Formats |printf()|-like input and appends it to |*dest|.
void StringAppendf(std::string* dest, const char* format, ...);
// Formats |vprintf()|-like input and appends it to |*dest|.
void StringVAppendf(std::string* dest, const char* format, va_list ap);
} // namespace util
} // namespace mojo
#endif // MOJO_EDK_UTIL_STRING_PRINTF_H_