1 //
2 //
3 // Copyright 2016 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 // Posix code for gpr snprintf support.
20
21 #include <grpc/support/port_platform.h>
22
23 #ifdef GPR_WINDOWS
24
25 // Some platforms (namely msys) need wchar to be included BEFORE
26 // anything else, especially strsafe.h.
27 #include <grpc/support/alloc.h>
28 #include <grpc/support/log_windows.h>
29 #include <grpc/support/string_util.h>
30 #include <inttypes.h>
31 #include <stdarg.h>
32 #include <stdio.h>
33 #include <string.h>
34 #include <strsafe.h>
35 #include <wchar.h>
36
37 #include "src/core/util/string.h"
38 #include "src/core/util/tchar.h"
39
gpr_format_message(int messageid)40 char* gpr_format_message(int messageid) {
41 LPTSTR tmessage;
42 DWORD status = FormatMessage(
43 FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM |
44 FORMAT_MESSAGE_IGNORE_INSERTS,
45 NULL, (DWORD)messageid, MAKELANGID(LANG_ENGLISH, SUBLANG_DEFAULT),
46 (LPTSTR)(&tmessage), 0, NULL);
47 if (status == 0) return gpr_strdup("Unable to retrieve error string");
48 auto message = grpc_core::TcharToChar(tmessage);
49 LocalFree(tmessage);
50 return gpr_strdup(message.c_str());
51 }
52
53 #endif // GPR_WINDOWS
54