1 /*
2 * Copyright (c) 2023 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 "create_stream.h"
17
18 #include <memory>
19 #include <tuple>
20
21 #include "class_stream/stream_entity.h"
22 #include "class_stream/stream_n_exporter.h"
23 #include "common_func.h"
24 #include "file_utils.h"
25 #include "filemgmt_libhilog.h"
26
27 namespace OHOS {
28 namespace FileManagement {
29 namespace ModuleFileIO {
30 using namespace std;
31 using namespace OHOS::FileManagement::LibN;
32
GetCreateStreamArgs(napi_env env,const NFuncArg & funcArg)33 static tuple<bool, string, string> GetCreateStreamArgs(napi_env env, const NFuncArg &funcArg)
34 {
35 auto [resGetFirstArg, path, unused] = NVal(env, funcArg[NARG_POS::FIRST]).ToUTF8String();
36 if (!resGetFirstArg) {
37 return { false, "", "" };
38 }
39
40 auto [resGetSecondArg, mode, useless] = NVal(env, funcArg[NARG_POS::SECOND]).ToUTF8String();
41 if (!resGetSecondArg) {
42 return { false, "", "" };
43 }
44
45 return { true, path.get(), mode.get() };
46 }
47
Sync(napi_env env,napi_callback_info info)48 napi_value CreateStream::Sync(napi_env env, napi_callback_info info)
49 {
50 NFuncArg funcArg(env, info);
51 if (!funcArg.InitArgs(NARG_CNT::TWO)) {
52 HILOGE("Number of arguments unmatched");
53 NError(EINVAL).ThrowErr(env);
54 return nullptr;
55 }
56
57 auto [resGetCreateStreamArgs, argPath, argMode] = GetCreateStreamArgs(env, funcArg);
58 if (!resGetCreateStreamArgs) {
59 HILOGE("Arg path and mode are required to be type of string");
60 NError(EINVAL).ThrowErr(env);
61 return nullptr;
62 }
63
64 unique_ptr<FILE, decltype(&fclose)> fp = { fopen(argPath.c_str(), argMode.c_str()), fclose };
65 if (!fp) {
66 HILOGE("Failed to fdopen file by path");
67 NError(errno).ThrowErr(env);
68 return nullptr;
69 }
70
71 return CommonFunc::InstantiateStream(env, move(fp)).val_;
72 }
73
Async(napi_env env,napi_callback_info info)74 napi_value CreateStream::Async(napi_env env, napi_callback_info info)
75 {
76 NFuncArg funcArg(env, info);
77 if (!funcArg.InitArgs(NARG_CNT::TWO, NARG_CNT::THREE)) {
78 HILOGE("Number of arguments unmatched");
79 NError(EINVAL).ThrowErr(env);
80 return nullptr;
81 }
82
83 auto [resGetCreateStreamArgs, argPath, argMode] = GetCreateStreamArgs(env, funcArg);
84 if (!resGetCreateStreamArgs) {
85 NError(EINVAL).ThrowErr(env);
86 return nullptr;
87 }
88
89 auto arg = CreateSharedPtr<AsyncCreateStreamArg>();
90 if (arg == nullptr) {
91 HILOGE("Failed to request heap memory.");
92 NError(ENOMEM).ThrowErr(env);
93 return nullptr;
94 }
95 auto cbExec = [arg, argPath = move(argPath), argMode = move(argMode)]() -> NError {
96 arg->fp = { fopen(argPath.c_str(), argMode.c_str()), fclose };
97 if (!arg->fp) {
98 HILOGE("Failed to fdopen file by path");
99 return NError(errno);
100 }
101 return NError(ERRNO_NOERR);
102 };
103
104 auto cbCompl = [arg](napi_env env, NError err) -> NVal {
105 if (err) {
106 return { env, err.GetNapiErr(env) };
107 }
108 return CommonFunc::InstantiateStream(env, move(arg->fp));
109 };
110
111 NVal thisVar(env, funcArg.GetThisVar());
112 if (funcArg.GetArgc() == NARG_CNT::TWO) {
113 return NAsyncWorkPromise(env, thisVar).Schedule(PROCEDURE_CREATESTREAM_NAME, cbExec, cbCompl).val_;
114 } else {
115 NVal cb(env, funcArg[NARG_POS::THIRD]);
116 return NAsyncWorkCallback(env, thisVar, cb).Schedule(PROCEDURE_CREATESTREAM_NAME, cbExec, cbCompl).val_;
117 }
118 }
119 } // namespace ModuleFileIO
120 } // namespace FileManagement
121 } // namespace OHOS