Лабораторная работа №7

ProjectAirbus/ProjectAirbus/CollectionGenericObjects/ListGenericObjects.cs

@@ -1,4 +1,5 @@
-using System;
+using ProjectAirbus.Exceptions;
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
@@ -52,7 +53,7 @@ internal class ListGenericObjects<T> : ICollectionGenericObjects<T>
     public T? Get(int position)
     {
         // TODO проверка позиции
-        if (position >= Count || position < 0) return null;
+        if (position >= Count || position < 0) throw new PositionOutOfCollectionException(position);
         return _collection[position];
     }
 
@@ -61,12 +62,9 @@ internal class ListGenericObjects<T> : ICollectionGenericObjects<T>
         // TODO проверка, что не превышено максимальное количество элементов
         // TODO вставка в конец набора
 
-        if (_collection.Count > _maxCount)
-        {
-            return -1;
-        }
+        if (Count == _maxCount) throw new CollectionOverflowException(Count);
         _collection.Add(obj);
-        return _collection.Count;
+        return Count;
     }
 
     public int Insert(T obj, int position)
@@ -75,11 +73,8 @@ internal class ListGenericObjects<T> : ICollectionGenericObjects<T>
         // TODO проверка позиции
         // TODO вставка по позиции
 
-        if (_collection.Count > _maxCount)
-        {
-            return -1;
-        }
-        if (position >= Count || position < 0) return -1;
+        if (Count == _maxCount) throw new CollectionOverflowException(Count);
+        if (position >= Count || position < 0) throw new PositionOutOfCollectionException(position);
         _collection.Insert(position, obj);
         return position;
     }
@@ -89,7 +84,7 @@ internal class ListGenericObjects<T> : ICollectionGenericObjects<T>
         // TODO проверка позиции
         // TODO удаление объекта из списка
 
-        if (position >= Count || position < 0) return null;
+        if (position >= Count || position < 0) throw new PositionOutOfCollectionException(position);
         T obj = _collection[position];
         _collection.RemoveAt(position);
         return obj;

ProjectAirbus/ProjectAirbus/CollectionGenericObjects/MassiveGenericObjects.cs

@@ -1,4 +1,6 @@
 
+using ProjectAirbus.Exceptions;
+
 namespace ProjectAirbus.CollectionGenericObjects;
 
 
@@ -50,7 +52,10 @@ public class MassiveGenericObjects<T> : ICollectionGenericObjects<T>
 
     public T? Get(int position)
     {
-        if (position >= _collection.Length || position < 0) return null;
+        if (position < 0 || position >= MaxCount)
+        {
+            throw new PositionOutOfCollectionException(position);
+        }
         return _collection[position];
     }
 
@@ -58,17 +63,15 @@ public class MassiveGenericObjects<T> : ICollectionGenericObjects<T>
     {
         // TODO вставка в свободное место набора
 
-        int index = 0;
-        while (index < _collection.Length)
+        for (int i = 0; i < MaxCount; ++i)
         {
-            if (_collection[index] == null)
+            if (_collection[i] == null)
             {
-                _collection[index] = obj;
-                return index;
+                _collection[i] = obj;
+                return i;
             }
-            index++;
         }
-        return -1;
+        throw new CollectionOverflowException(Count);
     }
 
     public int Insert(T obj, int position)
@@ -79,35 +82,32 @@ public class MassiveGenericObjects<T> : ICollectionGenericObjects<T>
         //		если нет после, ищем до
         // TODO вставка
 
-        if (position >= _collection.Length || position < 0)
-            return -1;
+        if (position < 0 || position >= MaxCount)
+        {
+            throw new PositionOutOfCollectionException(Count);
+        }
         if (_collection[position] == null)
         {
             _collection[position] = obj;
             return position;
         }
-        int index = position + 1;
-        while (index < _collection.Length)
+        for (int i = position + 1; i < _collection.Length; ++i)
         {
-            if (_collection[index] == null)
+            if (_collection[i] == null)
             {
-                _collection[index] = obj;
-                return index;
+                _collection[i] = obj;
+                return position;
             }
-            ++index;
         }
-        index = position - 1;
-        while (index >= 0)
+        for (int i = 0; i < position; ++i)
         {
-            if (_collection[index] == null)
+            if (_collection[i] == null)
             {
-                _collection[index] = obj;
-                return index;
+                _collection[i] = obj;
+                return position;
             }
-            --index;
         }
-        return -1;
-
+        throw new CollectionOverflowException(Count);
     }
 
     public T Remove(int position)
@@ -115,11 +115,17 @@ public class MassiveGenericObjects<T> : ICollectionGenericObjects<T>
         // TODO проверка позиции
         // TODO удаление объекта из массива, присвоив элементу массива значение null
 
-        if (position >= _collection.Length || position < 0)
-            return null;
-        T obj = _collection[position];
+        if (position < 0 || position >= MaxCount)
+        {
+            throw new PositionOutOfCollectionException(position);
+        }
+        if (_collection[position] == null)
+        {
+            throw new ObjectNotFoundException(position);
+        }
+        T remove = _collection[position];
         _collection[position] = null;
-        return obj;
+        return remove;
     }
 
     public IEnumerable<T?> GetItems()

ProjectAirbus/ProjectAirbus/CollectionGenericObjects/StorageCollection.cs

@@ -1,4 +1,5 @@
 using ProjectAirbus.Drawning;
+using ProjectAirbus.Exceptions;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -96,36 +97,35 @@ public class StorageCollection<T>
     /// </summary>
     /// <param name="filename">Путь и имя файла</param>
     /// <returns>true - сохранение прошло успешно, false - ошибка при сохранении данных</returns>
-    public bool SaveData(string filename)
+    public void SaveData(string filename)
     {
         if (_storages.Count == 0)
         {
-            return false;
-        }
+            throw new Exception("В хранилище отсутствуют коллекции для сохранения");
 
+        }
         if (File.Exists(filename))
         {
             File.Delete(filename);
         }
 
-        StringBuilder sb = new();
-        sb.Append(_collectionKey);
-        foreach (KeyValuePair<string, ICollectionGenericObjects<T>> value in
-        _storages)
+        using StreamWriter wr = new StreamWriter(filename);
+
+        wr.Write(_collectionKey);
+
+        foreach (KeyValuePair<string, ICollectionGenericObjects<T>> value in _storages)
         {
-            sb.Append(Environment.NewLine);
-            // не сохраняем пустые коллекции
+            wr.Write(Environment.NewLine);
             if (value.Value.Count == 0)
             {
                 continue;
             }
-            sb.Append(value.Key);
-            sb.Append(_separatorForKeyValue);
-            sb.Append(value.Value.GetCollectionType);
-            sb.Append(_separatorForKeyValue);
-            sb.Append(value.Value.MaxCount);
-            sb.Append(_separatorForKeyValue);
-
+            wr.Write(value.Key);
+            wr.Write(_separatorForKeyValue);
+            wr.Write(value.Value.GetCollectionType);
+            wr.Write(_separatorForKeyValue);
+            wr.Write(value.Value.MaxCount);
+            wr.Write(_separatorForKeyValue);
             foreach (T? item in value.Value.GetItems())
             {
                 string data = item?.GetDataForSave() ?? string.Empty;
@@ -133,14 +133,10 @@ public class StorageCollection<T>
                 {
                     continue;
                 }
-                sb.Append(data);
-                sb.Append(_separatorItems);
+                wr.Write(data);
+                wr.Write(_separatorItems);
             }
         }
-        using FileStream fs = new(filename, FileMode.Create);
-        byte[] info = new UTF8Encoding(true).GetBytes(sb.ToString());
-        fs.Write(info, 0, info.Length);
-        return true;
     }
 
     /// <summary>
@@ -148,66 +144,60 @@ public class StorageCollection<T>
     /// </summary>
     /// <param name="filename">Путь и имя файла</param>
     /// <returns>true - загрузка прошла успешно, false - ошибка при загрузкеданных</returns>
-    public bool LoadData(string filename)
+    public void LoadData(string filename)
     {
         if (!File.Exists(filename))
         {
-            return false;
+            throw new Exception("Файл не существует");
         }
-        string bufferTextFromFile = "";
-        using (FileStream fs = new(filename, FileMode.Open))
+        using (StreamReader fs = File.OpenText(filename))
         {
-            byte[] b = new byte[fs.Length];
-            UTF8Encoding temp = new(true);
-            while (fs.Read(b, 0, b.Length) > 0)
+            string str = fs.ReadLine();
+            if (str == null || str.Length == 0)
             {
-                bufferTextFromFile += temp.GetString(b);
+                throw new Exception("В файле нет данных");
             }
-        }
-        string[] strs = bufferTextFromFile.Split(new char[] { '\n', '\r' },
-        StringSplitOptions.RemoveEmptyEntries);
-        if (strs == null || strs.Length == 0)
+            if (!str.StartsWith(_collectionKey))
             {
-            return false;
-        }
-        if (!strs[0].Equals(_collectionKey))
-        {
-            //если нет такой записи, то это не те данные
-            return false;
+                throw new Exception("В файле неверные данные");
             }
             _storages.Clear();
-        foreach (string data in strs)
+            string strs = "";
+            while ((strs = fs.ReadLine()) != null)
             {
-            string[] record = data.Split(_separatorForKeyValue,
-            StringSplitOptions.RemoveEmptyEntries);
+                string[] record = strs.Split(_separatorForKeyValue, StringSplitOptions.RemoveEmptyEntries);
                 if (record.Length != 4)
                 {
                     continue;
                 }
-            CollectionType collectionType =
-            (CollectionType)Enum.Parse(typeof(CollectionType), record[1]);
-            ICollectionGenericObjects<T>? collection =
-            StorageCollection<T>.CreateCollection(collectionType);
+                CollectionType collectionType = (CollectionType)Enum.Parse(typeof(CollectionType), record[1]);
+                ICollectionGenericObjects<T>? collection = StorageCollection<T>.CreateCollection(collectionType);
                 if (collection == null)
                 {
-                return false;
+                    throw new Exception("Не удалось определить тип коллекции:" + record[1]);
                 }
                 collection.MaxCount = Convert.ToInt32(record[2]);
-            string[] set = record[3].Split(_separatorItems,
-            StringSplitOptions.RemoveEmptyEntries);
+                string[] set = record[3].Split(_separatorItems, StringSplitOptions.RemoveEmptyEntries);
                 foreach (string elem in set)
                 {
                     if (elem?.CreateDrawningBus() is T bus)
+                    {
+                        try
                         {
                             if (collection.Insert(bus) == -1)
                             {
-                        return false;
+                                throw new Exception("Объект не удалось добавить в коллекцию: " + record[3]);
+                            }
+                        }
+                        catch (CollectionOverflowException ex)
+                        {
+                            throw new Exception("Коллекция переполнена", ex);
                         }
                     }
                 }
                 _storages.Add(record[0], collection);
             }
-        return true;
+        }
     }
 
         /// <summary>

ProjectAirbus/ProjectAirbus/Exceptions/CollectionOverflowException.cs

@@ -0,0 +1,24 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Runtime.Serialization;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ProjectAirbus.Exceptions;
+
+/// <summary>
+/// Класс, описывающий ошибку переполнения коллекции
+/// </summary>
+[Serializable]
+public class CollectionOverflowException : ApplicationException
+{
+    public CollectionOverflowException(int count) : base("В коллекции превышено допустимое количество: " + count) { }
+    public CollectionOverflowException() : base() { }
+    public CollectionOverflowException(string message) : base(message) { }
+    public CollectionOverflowException(string message, Exception exception) :
+    base(message, exception)
+    { }
+    protected CollectionOverflowException(SerializationInfo info,
+    StreamingContext contex) : base(info, contex) { }
+}

ProjectAirbus/ProjectAirbus/Exceptions/ObjectNotFoundException.cs

@@ -0,0 +1,23 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Runtime.Serialization;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ProjectAirbus.Exceptions;
+
+/// <summary>
+/// Класс, описывающий ошибку, что по указанной позиции нет элемента
+/// </summary>
+[Serializable]
+internal class ObjectNotFoundException : ApplicationException
+{
+    public ObjectNotFoundException(int i) : base("Не найден объект по позиции " + i) { }
+    public ObjectNotFoundException() : base() { }
+    public ObjectNotFoundException(string message) : base(message) { }
+    public ObjectNotFoundException(string message, Exception exception) :
+    base(message, exception) { }
+    protected ObjectNotFoundException(SerializationInfo info, StreamingContext
+    contex) : base(info, contex) { }
+}

ProjectAirbus/ProjectAirbus/Exceptions/PositionOutOfCollectionException.cs

@@ -0,0 +1,23 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Runtime.Serialization;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ProjectAirbus.Exceptions;
+
+/// <summary>
+/// Класс, описывающий ошибку выхода за границы коллекции
+/// </summary>
+[Serializable]
+internal class PositionOutOfCollectionException : ApplicationException
+{
+    public PositionOutOfCollectionException(int i) : base("Выход за границы коллекции. Позиция " + i) { }
+    public PositionOutOfCollectionException() : base() { }
+    public PositionOutOfCollectionException(string message) : base(message) { }
+    public PositionOutOfCollectionException(string message, Exception
+    exception) : base(message, exception) { }
+    protected PositionOutOfCollectionException(SerializationInfo info,
+    StreamingContext contex) : base(info, contex) { }
+}

ProjectAirbus/ProjectAirbus/FormBusCollection.cs

@@ -1,4 +1,5 @@
-using ProjectAirbus.CollectionGenericObjects;
+using Microsoft.Extensions.Logging;
+using ProjectAirbus.CollectionGenericObjects;
 using ProjectAirbus.Drawning;
 using System;
 using System.Collections.Generic;
@@ -24,13 +25,19 @@ namespace ProjectAirbus
         /// </summary>
         private AbstractCompany? _company = null;
 
+        /// <summary>
+        /// Логер
+        /// </summary>
+        private readonly ILogger _logger;
+
         /// <summary>
         /// Конструктор
         /// </summary>
-        public FormBusCollection()
+        public FormBusCollection(ILogger<FormBusCollection> logger)
         {
             InitializeComponent();
             _storageCollection = new();
+            _logger = logger;
         }
 
         private void ComboBoxSelectorCompany_SelectedIndexChanged(object sender, EventArgs e)
@@ -234,13 +241,16 @@ namespace ProjectAirbus
         {
             if (saveFileDialog.ShowDialog() == DialogResult.OK)
             {
-                if (_storageCollection.SaveData(saveFileDialog.FileName))
+                try
                 {
+                    _storageCollection.SaveData(saveFileDialog.FileName);
                     MessageBox.Show("Сохранение прошло успешно", "Результат", MessageBoxButtons.OK, MessageBoxIcon.Information);
+                    _logger.LogInformation("Сохранение в файл: {filename}", saveFileDialog.FileName);
                 }
-                else
+                catch (Exception ex)
                 {
-                    MessageBox.Show("Не сохранилось", "Результат", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                    MessageBox.Show(ex.Message, "Результат", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                    _logger.LogError("Ошибка: {Message}", ex.Message);
                 }
             }
         }
@@ -249,16 +259,16 @@ namespace ProjectAirbus
         {
             if (openFileDialog.ShowDialog() == DialogResult.OK)
             {
-                if (_storageCollection.LoadData(openFileDialog.FileName))
+                try
                 {
-                    MessageBox.Show("Загрузка прошла успешно",
-                    "Результат", MessageBoxButtons.OK, MessageBoxIcon.Information);
+                    _storageCollection.LoadData(openFileDialog.FileName);
+                    MessageBox.Show("Загрузка прошла успешно", "Результат", MessageBoxButtons.OK, MessageBoxIcon.Information);
                     RerfreshListBoxItems();
                 }
-                else
+                catch (Exception ex)
                 {
-                    MessageBox.Show("Не сохранилось", "Результат",
-                    MessageBoxButtons.OK, MessageBoxIcon.Error);
+                    MessageBox.Show(ex.Message, "Результат", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                    _logger.LogError("Ошибка: {Message}", ex.Message);
                 }
             }
         }

ProjectAirbus/ProjectAirbus/Program.cs

@@ -1,3 +1,8 @@
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Logging;
+using NLog.Extensions.Logging;
+
 namespace ProjectAirbus
 {
     internal static class Program
@@ -10,8 +15,22 @@ namespace ProjectAirbus
         {
             // To customize application configuration such as set high DPI settings or default font,
             // see https://aka.ms/applicationconfiguration.
+            ServiceCollection services = new();
+            ConfigureServices(services);
             ApplicationConfiguration.Initialize();
-            Application.Run(new FormBusCollection());
+
+            using ServiceProvider serviceProvider = services.BuildServiceProvider();
+            Application.Run(serviceProvider.GetRequiredService<FormBusCollection>());
+        }
+
+        private static void ConfigureServices(ServiceCollection services)
+        {
+            services.AddSingleton<FormBusCollection>()
+                .AddLogging(option =>
+                {
+                    option.SetMinimumLevel(LogLevel.Information);
+                    option.AddNLog("nlog.config");
+                });
                 }
         }
 }

ProjectAirbus/ProjectAirbus/ProjectAirbus.csproj

@@ -8,6 +8,11 @@
     <ImplicitUsings>enable</ImplicitUsings>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Extensions.Logging" Version="7.0.0" />
+    <PackageReference Include="NLog.Extensions.Logging" Version="5.3.11" />
+  </ItemGroup>
+
   <ItemGroup>
     <Compile Update="Properties\Resources.Designer.cs">
       <DesignTime>True</DesignTime>
@@ -23,4 +28,10 @@
     </EmbeddedResource>
   </ItemGroup>
 
+  <ItemGroup>
+    <None Update="nlog.config">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </None>
+  </ItemGroup>
+
 </Project>

ProjectAirbus/ProjectAirbus/nlog.config

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<configuration>
+	<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd"
+		xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+		autoReload="true" internalLogLevel="Info">
+
+		<targets>
+			<target xsi:type="File" name="tofile" fileName="carlog-${shortdate}.log" />
+		</targets>
+		<rules>
+			<logger name="*" minlevel="Debug" writeTo="tofile" />
+		</rules>
+	</nlog>
+</configuration>