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 #include <grpc/support/port_platform.h>
20
21 #ifdef GPR_WINDOWS_ENV
22
23 #include <windows.h>
24
25 #include <grpc/support/alloc.h>
26 #include <grpc/support/log.h>
27 #include <grpc/support/string_util.h>
28
29 #include "src/core/lib/gpr/env.h"
30 #include "src/core/lib/gpr/string.h"
31 #include "src/core/lib/gpr/string_windows.h"
32
gpr_getenv(const char * name)33 char* gpr_getenv(const char* name) {
34 char* result = NULL;
35 DWORD size;
36 LPTSTR tresult = NULL;
37 LPTSTR tname = gpr_char_to_tchar(name);
38 DWORD ret;
39
40 ret = GetEnvironmentVariable(tname, NULL, 0);
41 if (ret == 0) {
42 gpr_free(tname);
43 return NULL;
44 }
45 size = ret * (DWORD)sizeof(TCHAR);
46 tresult = (LPTSTR)gpr_malloc(size);
47 ret = GetEnvironmentVariable(tname, tresult, size);
48 gpr_free(tname);
49 if (ret == 0) {
50 gpr_free(tresult);
51 return NULL;
52 }
53 result = gpr_tchar_to_char(tresult);
54 gpr_free(tresult);
55 return result;
56 }
57
gpr_setenv(const char * name,const char * value)58 void gpr_setenv(const char* name, const char* value) {
59 LPTSTR tname = gpr_char_to_tchar(name);
60 LPTSTR tvalue = gpr_char_to_tchar(value);
61 BOOL res = SetEnvironmentVariable(tname, tvalue);
62 gpr_free(tname);
63 gpr_free(tvalue);
64 GPR_ASSERT(res);
65 }
66
gpr_unsetenv(const char * name)67 void gpr_unsetenv(const char* name) {
68 LPTSTR tname = gpr_char_to_tchar(name);
69 BOOL res = SetEnvironmentVariable(tname, NULL);
70 gpr_free(tname);
71 GPR_ASSERT(res);
72 }
73
74 #endif /* GPR_WINDOWS_ENV */
75