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 <wchar.h>
28
29 #include <inttypes.h>
30 #include <stdarg.h>
31 #include <stdio.h>
32 #include <string.h>
33 #include <strsafe.h>
34
35 #include <grpc/support/alloc.h>
36 #include <grpc/support/log_windows.h>
37 #include <grpc/support/string_util.h>
38
39 #include "src/core/lib/gpr/string.h"
40 #include "src/core/lib/gpr/string_windows.h"
41
42 #if defined UNICODE || defined _UNICODE
43 LPTSTR
gpr_char_to_tchar(LPCSTR input)44 gpr_char_to_tchar(LPCSTR input) {
45 LPTSTR ret;
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);
50 return ret;
51 }
52
53 LPSTR
gpr_tchar_to_char(LPCTSTR input)54 gpr_tchar_to_char(LPCTSTR input) {
55 LPSTR ret;
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);
60 return ret;
61 }
62 #else
gpr_tchar_to_char(LPCTSTR input)63 LPSTR gpr_tchar_to_char(LPCTSTR input) { return (LPSTR)gpr_strdup(input); }
64
gpr_char_to_tchar(LPCTSTR input)65 LPTSTR gpr_char_to_tchar(LPCTSTR input) { return (LPTSTR)gpr_strdup(input); }
66 #endif
67
gpr_format_message(int messageid)68 char* gpr_format_message(int messageid) {
69 LPTSTR tmessage;
70 char* message;
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);
78 LocalFree(tmessage);
79 return message;
80 }
81
82 #endif /* GPR_WINDOWS */
83