1 /* 2 * 3 * Copyright 2015 gRPC authors. 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 */ 18 19 #ifndef GRPC_SUPPORT_STRING_UTIL_H 20 #define GRPC_SUPPORT_STRING_UTIL_H 21 22 #include <grpc/support/port_platform.h> 23 #include <grpc/support/time.h> 24 25 #ifdef __cplusplus 26 extern "C" { 27 #endif 28 29 /** String utility functions */ 30 31 /** Returns a copy of src that can be passed to gpr_free(). 32 If allocation fails or if src is NULL, returns NULL. */ 33 GPRAPI char* gpr_strdup(const char* src); 34 35 /** printf to a newly-allocated string. The set of supported formats may vary 36 between platforms. 37 38 On success, returns the number of bytes printed (excluding the final '\0'), 39 and *strp points to a string which must later be destroyed with gpr_free(). 40 41 On error, returns -1 and sets *strp to NULL. If the format string is bad, 42 the result is undefined. */ 43 GPRAPI int gpr_asprintf(char** strp, const char* format, ...) 44 GPR_PRINT_FORMAT_CHECK(2, 3); 45 46 #ifdef __cplusplus 47 } 48 #endif 49 50 #endif /* GRPC_SUPPORT_STRING_UTIL_H */ 51