3 * Copyright 2016 gRPC authors.
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
9 * http://www.apache.org/licenses/LICENSE-2.0
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.
19 /* Posix code for gpr snprintf support. */
21 #include <grpc/support/port_platform.h>
25 /* Some platforms (namely msys) need wchar to be included BEFORE
26 anything else, especially strsafe.h. */
35 #include <grpc/support/alloc.h>
36 #include <grpc/support/log_windows.h>
37 #include <grpc/support/string_util.h>
39 #include "src/core/lib/gpr/string.h"
40 #include "src/core/lib/gpr/string_windows.h"
42 #if defined UNICODE || defined _UNICODE
44 gpr_char_to_tchar(LPCSTR input) {
46 int needed = MultiByteToWideChar(CP_UTF8, 0, input, -1, NULL, 0);
47 if (needed <= 0) return NULL;
48 ret = (LPTSTR)gpr_malloc((unsigned)needed * sizeof(TCHAR));
49 MultiByteToWideChar(CP_UTF8, 0, input, -1, ret, needed);
54 gpr_tchar_to_char(LPCTSTR input) {
56 int needed = WideCharToMultiByte(CP_UTF8, 0, input, -1, NULL, 0, NULL, NULL);
57 if (needed <= 0) return NULL;
58 ret = (LPSTR)gpr_malloc((unsigned)needed);
59 WideCharToMultiByte(CP_UTF8, 0, input, -1, ret, needed, NULL, NULL);
63 LPSTR gpr_tchar_to_char(LPCTSTR input) { return (LPSTR)gpr_strdup(input); }
65 LPTSTR gpr_char_to_tchar(LPCTSTR input) { return (LPTSTR)gpr_strdup(input); }
68 char* gpr_format_message(int messageid) {
71 DWORD status = FormatMessage(
72 FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM |
73 FORMAT_MESSAGE_IGNORE_INSERTS,
74 NULL, (DWORD)messageid, MAKELANGID(LANG_ENGLISH, SUBLANG_DEFAULT),
75 (LPTSTR)(&tmessage), 0, NULL);
76 if (status == 0) return gpr_strdup("Unable to retrieve error string");
77 message = gpr_tchar_to_char(tmessage);
82 #endif /* GPR_WINDOWS */