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/ext/event_impl.h>
23 #include <meta/ext/object.h>
24 #include <meta/interface/builtin_objects.h>
25 #include <meta/interface/loaders/intf_file_content_loader.h>
26
META_BEGIN_NAMESPACE()27 META_BEGIN_NAMESPACE()
28
29 class CsvStringResourceLoader final : public META_NS::ObjectFwd<CsvStringResourceLoader,
30 ClassId::CsvStringResourceLoader, ClassId::Object, IFileContentLoader> {
31 META_IMPLEMENT_INTERFACE_PROPERTY(IFileContentLoader, bool, Cached)
32 public:
33 bool Build(const IMetadata::Ptr& data) override;
34
35 public: // IDynamicContentLoader
36 META_IMPLEMENT_INTERFACE_EVENT(IDynamicContentLoader, IOnChanged, ContentChanged)
37 void Reload() override;
38
39 public: // IFileContentLoader
40 bool SetFile(CORE_NS::IFile::Ptr file) override;
41 IObject::Ptr Create(const IObject::Ptr& params) override;
42
43 private:
44 static constexpr const BASE_NS::string_view KEY_HEADER_COLUMN = "key";
45 static constexpr const BASE_NS::string_view TARGET_PROPERTY_NAME = "strings";
46
47 struct ResourceObjectOptions {
48 BASE_NS::string keyHeaderColumnName { KEY_HEADER_COLUMN };
49 BASE_NS::string targetPropertyName { CsvStringResourceLoader::TARGET_PROPERTY_NAME };
50 bool keysToLower { true };
51 };
52
53 using CsvContentItemType = BASE_NS::pair<BASE_NS::string, BASE_NS::vector<BASE_NS::string>>;
54 using CsvContentType = BASE_NS::vector<CsvContentItemType>;
55
56 void Reset();
57 IObject::Ptr CreateStringResourceObject(const CsvContentType& content, const ResourceObjectOptions& options);
58 CsvContentType ParseCsv(BASE_NS::string_view csv, const ResourceObjectOptions& options);
59
60 CORE_NS::IFile::Ptr file_;
61 CsvContentType cachedContent_;
62 };
63
64 META_END_NAMESPACE()
65
66 #endif
67