feat: add translation local cache function

README.md

@@ -36,7 +36,7 @@
 - [x] 添加语音合成
 - [x] 添加离线截图翻译
 - [x] 添加检查更新
-- [ ] 添加翻译记录缓存功能
+- [x] 添加翻译记录缓存功能
 
 ## 使用
 
@@ -66,6 +66,8 @@
 
 ## 开发历史
 
+- 2023-01-17 0.20 添加翻译记录缓存功能，重复翻译从本地数据库获取，本地记录数量上限可调整
+
 - 2023-01-12 0.18 优化 GC 后台静默运行内存占用保持 4MB 左右
 
 - 2023-01-12 0.17 添加检查更新功能

STranslate/Helper/SqliteHelper.cs

@@ -0,0 +1,97 @@
+using SQLite;
+using STranslate.Model;
+using STranslate.ViewModel;
+using System;
+using System.IO;
+using System.Linq;
+using System.Reflection;
+using System.Threading.Tasks;
+
+namespace STranslate.Helper
+{
+    public class SqliteHelper : IDisposable
+    {
+        public SqliteHelper()
+        {
+            _sqlDB = new SQLiteConnection(_dbName);
+            _sqlDB.CreateTable<SqliteModel>();
+        }
+
+        public void Insert(DateTime time, string source, string target, LanguageEnum sourceLang, LanguageEnum targetLang, string api)
+        {
+            try
+            {
+                var model = new SqliteModel
+                {
+                    Time = time,
+                    SourceText = source,
+                    TargetText = target,
+                    SourceLang = sourceLang.ToString(),
+                    TargetLang = targetLang.ToString(),
+                    Api = api,
+                };
+
+                //查询最大数量
+                var count = _sqlDB.Table<SqliteModel>().Count();
+                if (count >= SettingsVM.Instance.MaxHistoryCount)
+                {
+                    _sqlDB.Execute("delete from histories where id in (select id from histories limit (?))"
+                        , count + 1 - SettingsVM.Instance.MaxHistoryCount);
+                }
+                //手动切换目标语言强制插入替换
+                _sqlDB.Table<SqliteModel>()
+                    .Where(x => x.SourceText.Equals(model.SourceText))
+                    .ToList().ForEach(x =>
+                    {
+                        _sqlDB.Delete(x);
+                    });
+                _sqlDB.Insert(model);
+            }
+            catch (Exception ex)
+            {
+                System.Windows.MessageBox.Show($"本地记录插入错误\n{ex.Message}");
+            }
+        }
+
+        /// <summary>
+        /// 查询记录
+        /// </summary>
+        /// <param name="str"></param>
+        /// <returns></returns>
+        public string Query(string str)
+        {
+            var query = _sqlDB.Table<SqliteModel>().Where(x => x.SourceText.Equals(str));
+            if (query.Count() <= 0)
+            {
+                return string.Empty;
+            }
+            else//如果超过一个删除多余的
+            {
+                var tmp = query.ToList();
+                for (int i = 1; i < tmp.Count; i++)
+                {
+                    _sqlDB.Delete(tmp[i]);
+                }
+                return query.First().TargetText;
+            }
+        }
+
+        public void Dispose()
+        {
+            _sqlDB.Close();
+        }
+
+        private readonly SQLiteConnection _sqlDB;
+
+        /// <summary>
+        /// 数据文件
+        /// </summary>
+        private static string _dbName => $"{_ApplicationData}\\{_AppName.ToLower()}.db";
+
+        /// <summary>
+        /// C:\Users\user\AppData\Local\STranslate
+        /// </summary>
+        private static string _ApplicationData => $"{Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData)}\\{_AppName}";
+        private static readonly string _AppName = Path.GetFileNameWithoutExtension(Assembly.GetEntryAssembly().Location);
+    }
+}

STranslate/Model/ConfigModel.cs

@@ -17,6 +17,7 @@ namespace STranslate.Model
         {
             return new ConfigModel
             {
+                MaxHistoryCount = 100,
                 AutoScale = 0.8,
                 WordPickupInterval = 200,
                 IsBright = true,
@@ -44,6 +45,11 @@ namespace STranslate.Model
             };
         }
 
+        /// <summary>
+        /// 最大历史记录数量
+        /// </summary>
+        [JsonProperty("maxHistoryCount")]
+        public int MaxHistoryCount { get; set; }
         /// <summary>
         /// 自动识别语种标度
         /// </summary>

STranslate/Model/SqliteModel.cs

@@ -0,0 +1,38 @@
+using SQLite;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace STranslate.Model
+{
+    [Table("Histories")]
+    public class SqliteModel
+    {
+        [PrimaryKey, AutoIncrement]
+        [Column("id")]
+        public int Id { get; set; }
+
+        [Column("time")]
+        public DateTime Time { get; set; }
+
+        [Column("source_lang")]
+        public string SourceLang { get; set; }
+
+        [Column("target_lang")]
+        public string TargetLang { get; set; }
+
+        [Column("source_text")]
+        public string SourceText { get; set; }
+
+        [Column("target_text")]
+        public string TargetText { get; set; }
+
+        [Column("api")]
+        public string Api { get; set; }
+
+        [Column("remark")]
+        public string Remark { get; set; }
+    }
+}

STranslate/Properties/AssemblyInfo.cs

@@ -47,6 +47,6 @@ using System.Windows;
 //可以指定所有这些值，也可以使用“生成号”和“修订号”的默认值
 //通过使用 "*"，如下所示:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("0.1.9.0")]
-[assembly: AssemblyFileVersion("0.1.9.0")]
+[assembly: AssemblyVersion("0.2.0.0")]
+[assembly: AssemblyFileVersion("0.2.0.0")]
 [assembly: Guid("CE252DD8-179F-4544-9989-453F5DEA378D")]

STranslate/STranslate.csproj

@@ -59,9 +59,37 @@
     <Reference Include="Newtonsoft.Json, Version=13.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
       <HintPath>..\packages\Newtonsoft.Json.13.0.2\lib\net45\Newtonsoft.Json.dll</HintPath>
     </Reference>
+    <Reference Include="SQLite-net, Version=1.8.116.0, Culture=neutral, processorArchitecture=MSIL">
+      <HintPath>..\packages\sqlite-net-pcl.1.8.116\lib\netstandard2.0\SQLite-net.dll</HintPath>
+    </Reference>
+    <Reference Include="SQLitePCLRaw.batteries_v2, Version=2.0.4.976, Culture=neutral, PublicKeyToken=8226ea5df37bcae9, processorArchitecture=MSIL">
+      <HintPath>..\packages\SQLitePCLRaw.bundle_green.2.0.4\lib\net461\SQLitePCLRaw.batteries_v2.dll</HintPath>
+    </Reference>
+    <Reference Include="SQLitePCLRaw.core, Version=2.0.4.976, Culture=neutral, PublicKeyToken=1488e028ca7ab535, processorArchitecture=MSIL">
+      <HintPath>..\packages\SQLitePCLRaw.core.2.0.4\lib\netstandard2.0\SQLitePCLRaw.core.dll</HintPath>
+    </Reference>
+    <Reference Include="SQLitePCLRaw.nativelibrary, Version=2.0.4.976, Culture=neutral, PublicKeyToken=502ed628492ab262, processorArchitecture=MSIL">
+      <HintPath>..\packages\SQLitePCLRaw.bundle_green.2.0.4\lib\net461\SQLitePCLRaw.nativelibrary.dll</HintPath>
+    </Reference>
+    <Reference Include="SQLitePCLRaw.provider.dynamic_cdecl, Version=2.0.4.976, Culture=neutral, PublicKeyToken=b68184102cba0b3b, processorArchitecture=MSIL">
+      <HintPath>..\packages\SQLitePCLRaw.provider.dynamic_cdecl.2.0.4\lib\netstandard2.0\SQLitePCLRaw.provider.dynamic_cdecl.dll</HintPath>
+    </Reference>
     <Reference Include="System" />
+    <Reference Include="System.Buffers, Version=4.0.2.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51, processorArchitecture=MSIL">
+      <HintPath>..\packages\System.Buffers.4.4.0\lib\netstandard2.0\System.Buffers.dll</HintPath>
+    </Reference>
     <Reference Include="System.Data" />
     <Reference Include="System.Drawing" />
+    <Reference Include="System.Memory, Version=4.0.1.1, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51, processorArchitecture=MSIL">
+      <HintPath>..\packages\System.Memory.4.5.3\lib\netstandard2.0\System.Memory.dll</HintPath>
+    </Reference>
+    <Reference Include="System.Numerics" />
+    <Reference Include="System.Numerics.Vectors, Version=4.1.3.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
+      <HintPath>..\packages\System.Numerics.Vectors.4.4.0\lib\net46\System.Numerics.Vectors.dll</HintPath>
+    </Reference>
+    <Reference Include="System.Runtime.CompilerServices.Unsafe, Version=4.0.4.1, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
+      <HintPath>..\packages\System.Runtime.CompilerServices.Unsafe.4.5.2\lib\netstandard2.0\System.Runtime.CompilerServices.Unsafe.dll</HintPath>
+    </Reference>
     <Reference Include="System.Speech" />
     <Reference Include="System.Web" />
     <Reference Include="System.Windows.Forms" />
@@ -95,8 +123,10 @@
     <Compile Include="Helper\MvvmHelper.cs" />
     <Compile Include="Helper\NativeMethodHelper.cs" />
     <Compile Include="Helper\Processhelper.cs" />
+    <Compile Include="Helper\SqliteHelper.cs" />
     <Compile Include="Helper\StartupHelper.cs" />
     <Compile Include="Model\ConfigModel.cs" />
+    <Compile Include="Model\SqliteModel.cs" />
     <Compile Include="Model\VisibilityConverter.cs" />
     <Compile Include="Properties\Resources.Designer.cs">
       <AutoGen>True</AutoGen>
@@ -230,5 +260,7 @@
       <ErrorText>这台计算机上缺少此项目引用的 NuGet 程序包。使用“NuGet 程序包还原”可下载这些程序包。有关更多信息，请参见 http://go.microsoft.com/fwlink/?LinkID=322105。缺少的文件是 {0}。</ErrorText>
     </PropertyGroup>
     <Error Condition="!Exists('..\packages\Tesseract.5.2.0\build\Tesseract.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\Tesseract.5.2.0\build\Tesseract.targets'))" />
+    <Error Condition="!Exists('..\packages\SQLitePCLRaw.lib.e_sqlite3.2.0.4\build\net461\SQLitePCLRaw.lib.e_sqlite3.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\SQLitePCLRaw.lib.e_sqlite3.2.0.4\build\net461\SQLitePCLRaw.lib.e_sqlite3.targets'))" />
   </Target>
+  <Import Project="..\packages\SQLitePCLRaw.lib.e_sqlite3.2.0.4\build\net461\SQLitePCLRaw.lib.e_sqlite3.targets" Condition="Exists('..\packages\SQLitePCLRaw.lib.e_sqlite3.2.0.4\build\net461\SQLitePCLRaw.lib.e_sqlite3.targets')" />
 </Project>

STranslate/View/SettingsWindow.xaml

@@ -80,6 +80,21 @@
                         </WrapPanel>
                     </GroupBox>
                     
+                    <GroupBox Header="历史记录数量"
+                              ToolTip="记录记录至本地数据库，以便省去重复查询的时间，调整最大历史记录数量">
+                        <WrapPanel Margin="0,5,0,5">
+                            <Slider Value="{Binding DataContext.MaxHistoryCount, ElementName=window}"
+                                    Minimum="1"
+                                    Maximum="1000"
+                                    MinWidth="200"
+                                    TickFrequency="10"
+                                    TickPlacement="None"
+                                    IsSnapToTickEnabled="True">
+                            </Slider>
+                            <TextBlock Text="{Binding MaxHistoryCount, StringFormat={}{0}条}" Margin="10,0,0,0" />
+                        </WrapPanel>
+                    </GroupBox>
+                    
                     <GroupBox Header="取词间隔"
                               ToolTip="划词翻译实现原理是：用户用鼠标划词后模拟Ctrl+C，间隔一定时间后，程序再从剪切板取词，如果电脑反应慢，可能会出现取不到词的问题，将间隔调大可以适配一些老旧的机器">
                         <WrapPanel Margin="0,5,0,5">

STranslate/ViewModel/MainVM.cs

@@ -25,6 +25,7 @@ namespace STranslate.ViewModel
 
             InputCombo = LanguageEnumDict.Keys.ToList();
             OutputCombo = LanguageEnumDict.Keys.ToList();
+            _sqlHelper = new SqliteHelper();
             #endregion
 
             #region Common
@@ -209,6 +210,8 @@ namespace STranslate.ViewModel
             Util.Util.FlushMemory();
             Mainwin.NotifyIcon.Dispose();
             Mainwin.Close();
+            //关闭数据库
+            _sqlHelper.Dispose();
             //语音合成销毁
             _speech.Dispose();
             //注销快捷键
@@ -231,6 +234,10 @@ namespace STranslate.ViewModel
             {
                 _globalConfig = ConfigHelper.Instance.ReadConfig<ConfigModel>();
 
+                //读取历史记录数量
+                var count = _globalConfig.MaxHistoryCount;
+                SettingsVM.Instance.MaxHistoryCount = (count <= 0 || count >= 1000) ? 100 : count;
+
                 //读取自动识别语种比例
                 var scale = _globalConfig.AutoScale;
                 SettingsVM.Instance.AutoScale = (scale <= 0 || scale >= 1) ? 0.8 : scale;
@@ -275,6 +282,7 @@ namespace STranslate.ViewModel
             {
                 ConfigHelper.Instance.WriteConfig(new ConfigModel
                 {
+                    MaxHistoryCount = SettingsVM.Instance.MaxHistoryCount,
                     AutoScale = SettingsVM.Instance.AutoScale,
                     WordPickupInterval = SettingsVM.Instance.WordPickupInterval,
                     IsBright = Application.Current.Resources.MergedDictionaries[0].Source.ToString() == ThemeDefault ? true : false,
@@ -330,7 +338,8 @@ namespace STranslate.ViewModel
         {
             try
             {
-                if (string.IsNullOrEmpty(InputTxt.Trim())) throw new Exception("输入值为空!");
+                if (string.IsNullOrEmpty(InputTxt.Trim()))
+                    throw new Exception("输入值为空!");
                 var isEng = string.Empty;
                 IdentifyLanguage = string.Empty;
                 OutputTxt = "翻译中...";
@@ -342,6 +351,13 @@ namespace STranslate.ViewModel
                 //自动选择目标语言
                 if (OutputComboSelected == LanguageEnum.AUTO.GetDescription())
                 {
+                    //只有在自动的模式下读取
+                    var resp = _sqlHelper.Query(InputTxt);
+                    if (!string.IsNullOrEmpty(resp))
+                    {
+                        OutputTxt = resp;
+                        return;
+                    }
                     var autoRet = AutomaticLanguageRecognition(InputTxt);
                     IdentifyLanguage = autoRet.Item1;
                     isEng = autoRet.Item2;
@@ -361,6 +377,16 @@ namespace STranslate.ViewModel
                 }
                 OutputTxt = _translateResp;
 
+                await Task.Run(() =>
+                {
+                    _sqlHelper.Insert(DateTime.Now,
+                       InputTxt,
+                       OutputTxt,
+                       LanguageEnumDict[string.IsNullOrEmpty(IdentifyLanguage) ? InputComboSelected : IdentifyLanguage],
+                       LanguageEnumDict[string.IsNullOrEmpty(isEng) ? OutputComboSelected : isEng],
+                       SelectedTranslationInterface.Api);
+                });
+
                 //如果目标语言不是英文则不进行转换
                 //1. 自动判断语种：Tuple item2 不为 EN
                 //2. 非自动判断语种，目标语种不为 EN
@@ -390,6 +416,7 @@ namespace STranslate.ViewModel
         #endregion handle
 
         #region Params
+        private readonly SqliteHelper _sqlHelper;
         private string _translateResp;
         public ICommand MouseLeftDownCmd { get; set; }
         public ICommand DeactivatedCmd { get; set; }

STranslate/ViewModel/SettingsVM.cs

@@ -136,5 +136,11 @@ namespace STranslate.ViewModel
         private double _wordPickupInterval;
         public double WordPickupInterval { get => _wordPickupInterval; set => UpdateProperty(ref _wordPickupInterval, value); }
 
+        /// <summary>
+        /// 最大历史记录数量
+        /// </summary>
+        private int _maxHistoryCount;
+        public int MaxHistoryCount { get => _maxHistoryCount; set => UpdateProperty(ref _maxHistoryCount, value); }
+
     }
 }

STranslate/packages.config

@@ -2,6 +2,15 @@
 <packages>
   <package id="Microsoft.Xaml.Behaviors.Wpf" version="1.1.39" targetFramework="net48" />
   <package id="Newtonsoft.Json" version="13.0.2" targetFramework="net48" />
+  <package id="sqlite-net-pcl" version="1.8.116" targetFramework="net48" />
+  <package id="SQLitePCLRaw.bundle_green" version="2.0.4" targetFramework="net48" />
+  <package id="SQLitePCLRaw.core" version="2.0.4" targetFramework="net48" />
+  <package id="SQLitePCLRaw.lib.e_sqlite3" version="2.0.4" targetFramework="net48" />
+  <package id="SQLitePCLRaw.provider.dynamic_cdecl" version="2.0.4" targetFramework="net48" />
+  <package id="System.Buffers" version="4.4.0" targetFramework="net48" />
+  <package id="System.Memory" version="4.5.3" targetFramework="net48" />
+  <package id="System.Numerics.Vectors" version="4.4.0" targetFramework="net48" />
+  <package id="System.Runtime.CompilerServices.Unsafe" version="4.5.2" targetFramework="net48" />
   <package id="Tesseract" version="5.2.0" targetFramework="net48" />
   <package id="WpfScreenHelper" version="2.1.0" targetFramework="net48" />
 </packages>