// Licensed to the Apache Software Foundation (ASF) under one // or more contributor license agreements. See the NOTICE file // distributed with this work for additional information // regarding copyright ownership. The ASF licenses this file // to you under the Apache License, Version 2.0 (the // "License"); you may not use this file except in compliance // with the License. You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, // software distributed under the License is distributed on an // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY // KIND, either express or implied. See the License for the // specific language governing permissions and limitations // under the License. #ifndef BUTIL_STRING_PRINTF_H #define BUTIL_STRING_PRINTF_H #include <string> // std::string #include <stdarg.h> // va_list namespace butil { // Convert |format| and associated arguments to std::string std::string string_printf(const char* format, ...) __attribute__ ((format (printf, 1, 2))); // Write |format| and associated arguments into |output| // Returns 0 on success, -1 otherwise. int string_printf(std::string* output, const char* fmt, ...) __attribute__ ((format (printf, 2, 3))); // Write |format| and associated arguments in form of va_list into |output|. // Returns 0 on success, -1 otherwise. int string_vprintf(std::string* output, const char* format, va_list args); // Append |format| and associated arguments to |output| // Returns 0 on success, -1 otherwise. int string_appendf(std::string* output, const char* format, ...) __attribute__ ((format (printf, 2, 3))); // Append |format| and associated arguments in form of va_list to |output|. // Returns 0 on success, -1 otherwise. int string_vappendf(std::string* output, const char* format, va_list args); } // namespace butil #endif // BUTIL_STRING_PRINTF_H