1/* Copyright 2015 The TensorFlow Authors. All Rights Reserved.
2
3Licensed under the Apache License, Version 2.0 (the "License");
4you may not use this file except in compliance with the License.
5You may obtain a copy of the License at
6
7 http://www.apache.org/licenses/LICENSE-2.0
8
9Unless required by applicable law or agreed to in writing, software
10distributed under the License is distributed on an "AS IS" BASIS,
11WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12See the License for the specific language governing permissions and
13limitations under the License.
14==============================================================================*/
15
16// Printf variants that place their output in a C++ string.
17//
18// Usage:
19// string result = strings::Printf("%d %s\n", 10, "hello");
20// strings::Appendf(&result, "%d %s\n", 20, "there");
21
22#ifndef TENSORFLOW_TSL_PLATFORM_STRINGPRINTF_H_
23#define TENSORFLOW_TSL_PLATFORM_STRINGPRINTF_H_
24
25#include <stdarg.h>
26
27#include <string>
28
29#include "tensorflow/tsl/platform/macros.h"
30#include "tensorflow/tsl/platform/types.h"
31
32namespace tsl {
33namespace strings {
34
35// Return a C++ string
36std::string Printf(const char* format, ...)
37 // Tell the compiler to do printf format string checking.
38 TF_PRINTF_ATTRIBUTE(1, 2);
39
40// Append result to a supplied string
41void Appendf(std::string* dst, const char* format, ...)
42 // Tell the compiler to do printf format string checking.
43 TF_PRINTF_ATTRIBUTE(2, 3);
44
45// Lower-level routine that takes a va_list and appends to a specified
46// string. All other routines are just convenience wrappers around it.
47void Appendv(std::string* dst, const char* format, va_list ap);
48
49} // namespace strings
50} // namespace tsl
51
52#endif // TENSORFLOW_TSL_PLATFORM_STRINGPRINTF_H_
53