1 /*
2 * Copyright (c) 2024 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 #ifndef META_SRC_LOADERS_CSV_STRING_RESOURCE_LOADER_H
17 #define META_SRC_LOADERS_CSV_STRING_RESOURCE_LOADER_H
18
19 #include <base/containers/unordered_map.h>
20
21 #include <meta/api/property/property_event_handler.h>
22 #include <meta/base/namespace.h>
23 #include <meta/ext/event_impl.h>
24 #include <meta/ext/implementation_macros.h>
25 #include <meta/ext/object_fwd.h>
26 #include <meta/interface/builtin_objects.h>
27 #include <meta/interface/loaders/intf_file_content_loader.h>
28
META_BEGIN_NAMESPACE()29 META_BEGIN_NAMESPACE()
30
31 class CsvStringResourceLoader final : public IntroduceInterfaces<ObjectFwd, IFileContentLoader> {
32 META_OBJECT(CsvStringResourceLoader, ClassId::CsvStringResourceLoader, IntroduceInterfaces)
33 public:
34 bool Build(const IMetadata::Ptr& data) override;
35
36 META_BEGIN_STATIC_DATA()
37 META_STATIC_PROPERTY_DATA(IFileContentLoader, bool, Cached)
38 META_STATIC_EVENT_DATA(IDynamicContentLoader, IOnChanged, ContentChanged)
39 META_END_STATIC_DATA()
40 META_IMPLEMENT_PROPERTY(bool, Cached)
41 META_IMPLEMENT_EVENT(IOnChanged, ContentChanged)
42 public: // IDynamicContentLoader
43 void Reload() override;
44
45 public: // IFileContentLoader
46 bool SetFile(CORE_NS::IFile::Ptr file) override;
47 IObject::Ptr Create(const IObject::Ptr& params) override;
48
49 private:
50 static constexpr const BASE_NS::string_view KEY_HEADER_COLUMN = "key";
51 static constexpr const BASE_NS::string_view TARGET_PROPERTY_NAME = "strings";
52
53 struct ResourceObjectOptions {
54 BASE_NS::string keyHeaderColumnName { KEY_HEADER_COLUMN };
55 BASE_NS::string targetPropertyName { CsvStringResourceLoader::TARGET_PROPERTY_NAME };
56 bool keysToLower { true };
57 };
58
59 using CsvContentItemType = BASE_NS::pair<BASE_NS::string, BASE_NS::vector<BASE_NS::string>>;
60 using CsvContentType = BASE_NS::vector<CsvContentItemType>;
61
62 void Reset();
63 IObject::Ptr CreateStringResourceObject(const CsvContentType& content, const ResourceObjectOptions& options);
64 CsvContentType ParseCsv(BASE_NS::string_view csv, const ResourceObjectOptions& options);
65
66 CORE_NS::IFile::Ptr file_;
67 CsvContentType cachedContent_;
68 };
69
70 META_END_NAMESPACE()
71
72 #endif
73