1 // Copyright 2013 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef BASE_STRINGS_STRINGPRINTF_H_ 6 #define BASE_STRINGS_STRINGPRINTF_H_ 7 8 #include <stdarg.h> // va_list 9 10 #include <string> 11 12 #include "base/compiler_specific.h" 13 #include "util/build_config.h" 14 15 namespace base { 16 17 // Return a C++ string given printf-like input. 18 [[nodiscard]] std::string StringPrintf( 19 _Printf_format_string_ const char* format, 20 ...) PRINTF_FORMAT(1, 2); 21 22 // Return a C++ string given vprintf-like input. 23 [[nodiscard]] std::string StringPrintV(const char* format, va_list ap) 24 PRINTF_FORMAT(1, 0); 25 26 // Store result into a supplied string and return it. 27 const std::string& SStringPrintf(std::string* dst, 28 _Printf_format_string_ const char* format, 29 ...) PRINTF_FORMAT(2, 3); 30 31 // Append result to a supplied string. 32 void StringAppendF(std::string* dst, 33 _Printf_format_string_ const char* format, 34 ...) PRINTF_FORMAT(2, 3); 35 36 // Lower-level routine that takes a va_list and appends to a specified 37 // string. All other routines are just convenience wrappers around it. 38 void StringAppendV(std::string* dst, const char* format, va_list ap) 39 PRINTF_FORMAT(2, 0); 40 41 } // namespace base 42 43 #endif // BASE_STRINGS_STRINGPRINTF_H_ 44