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/base_export.h" 13 #include "base/compiler_specific.h" 14 #include "build/build_config.h" 15 16 namespace base { 17 18 // Return a C++ string given printf-like input. 19 std::string StringPrintf(const char* format, ...) 20 PRINTF_FORMAT(1, 2) WARN_UNUSED_RESULT; 21 22 // Return a C++ string given vprintf-like input. 23 std::string StringPrintV(const char* format, va_list ap) 24 PRINTF_FORMAT(1, 0) WARN_UNUSED_RESULT; 25 26 // Store result into a supplied string and return it. 27 const std::string& SStringPrintf(std::string* dst, const char* format, ...) 28 PRINTF_FORMAT(2, 3); 29 30 // Append result to a supplied string. 31 void StringAppendF(std::string* dst, const char* format, ...) 32 PRINTF_FORMAT(2, 3); 33 34 // Lower-level routine that takes a va_list and appends to a specified 35 // string. All other routines are just convenience wrappers around it. 36 void StringAppendV(std::string* dst, const char* format, va_list ap) 37 PRINTF_FORMAT(2, 0); 38 39 } // namespace base 40 41 #endif // BASE_STRINGS_STRINGPRINTF_H_ 42