1 /*
2 * Copyright (c) 2021-2022 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include "uni_error.h"
17
18 #include <cerrno>
19 #include <string>
20
21 #include "js_native_api.h"
22 #include "log.h"
23 #include "napi/n_val.h"
24
25 namespace OHOS {
26 namespace DistributedFS {
27 using namespace std;
28
UniError()29 UniError::UniError() {}
30
UniError(ELegacy eLegacy)31 UniError::UniError(ELegacy eLegacy) : errno_(eLegacy), codingSystem_(ERR_CODE_SYSTEM_LEGACY) {}
32
UniError(int ePosix)33 UniError::UniError(int ePosix) : errno_(ePosix), codingSystem_(ERR_CODE_SYSTEM_POSIX) {}
34
operator bool() const35 UniError::operator bool() const
36 {
37 return errno_ != ERRNO_NOERR;
38 }
39
GetErrno(ErrCodeSystem cs)40 int UniError::GetErrno(ErrCodeSystem cs)
41 {
42 if (errno_ == ERRNO_NOERR) {
43 return ERRNO_NOERR;
44 }
45 if (cs == codingSystem_) {
46 return errno_;
47 }
48
49 if (cs == ERR_CODE_SYSTEM_POSIX) {
50 // Note that we should support more codes here
51 return EINVAL;
52 }
53
54 // Note that this shall be done properly
55 return ELEGACY_INVAL;
56 }
57
SetErrno(ELegacy eLegacy)58 void UniError::SetErrno(ELegacy eLegacy)
59 {
60 errno_ = eLegacy;
61 codingSystem_ = ERR_CODE_SYSTEM_LEGACY;
62 }
63
SetErrno(int ePosix)64 void UniError::SetErrno(int ePosix)
65 {
66 errno_ = ePosix;
67 codingSystem_ = ERR_CODE_SYSTEM_POSIX;
68 }
69
GetDefaultErrstr()70 std::string UniError::GetDefaultErrstr()
71 {
72 if (codingSystem_ != ERR_CODE_SYSTEM_POSIX && codingSystem_ != ERR_CODE_SYSTEM_LEGACY) {
73 return "BUG: Curious coding system";
74 }
75 return strerror(GetErrno(ERR_CODE_SYSTEM_POSIX));
76 }
77
GetNapiErr(napi_env env)78 napi_value UniError::GetNapiErr(napi_env env)
79 {
80 return GetNapiErr(env, GetDefaultErrstr());
81 }
82
GetNapiErr(napi_env env,string errMsg)83 napi_value UniError::GetNapiErr(napi_env env, string errMsg)
84 {
85 int errCode = GetErrno(codingSystem_);
86 if (errCode == ERRNO_NOERR) {
87 return nullptr;
88 }
89 napi_value code = NVal::CreateUTF8String(env, to_string(errCode)).val_;
90 napi_value msg = NVal::CreateUTF8String(env, errMsg).val_;
91
92 napi_value res = nullptr;
93 napi_status createRes = napi_create_error(env, code, msg, &res);
94 if (createRes) {
95 HILOGE("Failed to create an exception, msg = %{public}s", errMsg.c_str());
96 }
97 return res;
98 }
99
ThrowErr(napi_env env)100 void UniError::ThrowErr(napi_env env)
101 {
102 string msg = GetDefaultErrstr();
103 napi_value tmp = nullptr;
104 napi_get_and_clear_last_exception(env, &tmp);
105 // Note that ace engine cannot throw errors created by napi_create_error so far
106 napi_status throwStatus = napi_throw_error(env, nullptr, msg.c_str());
107 if (throwStatus != napi_ok) {
108 HILOGE("Failed to throw an exception, %{public}d, code = %{public}s", throwStatus, msg.c_str());
109 }
110 }
111
ThrowErr(napi_env env,string errMsg)112 void UniError::ThrowErr(napi_env env, string errMsg)
113 {
114 napi_value tmp = nullptr;
115 napi_get_and_clear_last_exception(env, &tmp);
116 // Note that ace engine cannot throw errors created by napi_create_error so far
117 napi_status throwStatus = napi_throw_error(env, nullptr, errMsg.c_str());
118 if (throwStatus != napi_ok) {
119 HILOGE("Failed to throw an exception, %{public}d, code = %{public}s", throwStatus, errMsg.c_str());
120 }
121 }
122 } // namespace DistributedFS
123 } // namespace OHOS