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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 
24 #include <grpc/impl/codegen/gpr_types.h>
25 
26 #ifdef __cplusplus
27 extern "C" {
28 #endif
29 
30 /** String utility functions */
31 
32 /** Returns a copy of src that can be passed to gpr_free().
33    If allocation fails or if src is NULL, returns NULL. */
34 GPRAPI char* gpr_strdup(const char* src);
35 
36 /** printf to a newly-allocated string.  The set of supported formats may vary
37    between platforms.
38 
39    On success, returns the number of bytes printed (excluding the final '\0'),
40    and *strp points to a string which must later be destroyed with gpr_free().
41 
42    On error, returns -1 and sets *strp to NULL. If the format string is bad,
43    the result is undefined. */
44 GPRAPI int gpr_asprintf(char** strp, const char* format, ...)
45     GPR_PRINT_FORMAT_CHECK(2, 3);
46 
47 #ifdef __cplusplus
48 }
49 #endif
50 
51 #endif /* GRPC_SUPPORT_STRING_UTIL_H */
52