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Сохранение и запись через StreamWriter и StreamReader

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Павел Ладягин 2024-04-17 17:05:21 +04:00
parent e9e19bd2cd
commit 15565fd27b
1 changed files with 52 additions and 62 deletions
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112
AirplaneWithRadar/ProjectAirplaneWithRadar/CollectionGenericObjects/StorageCollection.cs
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@ -1,4 +1,5 @@
using System.Text; using System.IO;
using System.Text;
using ProjectAirplaneWithRadar.Drawnings; using ProjectAirplaneWithRadar.Drawnings;
namespace ProjectAirplaneWithRadar.CollectionGenericObjects namespace ProjectAirplaneWithRadar.CollectionGenericObjects
@ -105,22 +106,23 @@ namespace ProjectAirplaneWithRadar.CollectionGenericObjects
if(File.Exists(filename)) if(File.Exists(filename))
File.Delete(filename); File.Delete(filename);
StringBuilder sb = new(); using FileStream fs = new(filename, FileMode.Create);
using StreamWriter sw = new StreamWriter(fs);
sb.Append(_collectionKey); sw.Write(_collectionKey);
foreach(KeyValuePair<string, ICollectionGenericObjects<T>> value in _storages) foreach (KeyValuePair<string, ICollectionGenericObjects<T>> value in _storages)
{ {
sb.Append(Environment.NewLine); sw.Write(Environment.NewLine);
if (value.Value.Count == 0) if (value.Value.Count == 0)
{
continue; continue;
}
sb.Append(value.Key); sw.Write(value.Key);
sb.Append(_separatorForKeyValue); sw.Write(_separatorForKeyValue);
sb.Append(value.Value.GetCollectionType); sw.Write(value.Value.GetCollectionType);
sb.Append(_separatorForKeyValue); sw.Write(_separatorForKeyValue);
sb.Append(value.Value.MaxCount); sw.Write(value.Value.MaxCount);
sb.Append(_separatorForKeyValue); sw.Write(_separatorForKeyValue);
foreach (T? item in value.Value.GetItems()) foreach (T? item in value.Value.GetItems())
{ {
@ -130,14 +132,10 @@ namespace ProjectAirplaneWithRadar.CollectionGenericObjects
continue; continue;
} }
sb.Append(data); sw.Write(data);
sb.Append(_separatorItems); sw.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; return true;
} }
@ -153,59 +151,51 @@ namespace ProjectAirplaneWithRadar.CollectionGenericObjects
return false; return false;
} }
string bufferTextFromFile = "";
using (FileStream fs = new(filename, FileMode.Open)) using (FileStream fs = new(filename, FileMode.Open))
{ {
byte[] b = new byte[fs.Length]; using StreamReader sr = new StreamReader(fs);
UTF8Encoding temp = new(true);
while (fs.Read(b, 0, b.Length) > 0)
{
bufferTextFromFile += temp.GetString(b);
}
}
string[] strs = bufferTextFromFile.Split(new char[] { '\n', '\r' }, StringSplitOptions.RemoveEmptyEntries); string str = sr.ReadLine();
if (strs == null || strs.Length == 0) if (str == null || str.Length == 0)
{
return false;
}
if (!strs[0].Equals(_collectionKey))
{
return false;
}
_storages.Clear();
foreach (string data in strs)
{
string[] record = data.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);
if (collection == null)
{ {
return false; return false;
} }
collection.MaxCount = Convert.ToInt32(record[2]); if (!str.Equals(_collectionKey))
string[] set = record[3].Split(_separatorItems, StringSplitOptions.RemoveEmptyEntries);
foreach (string elem in set)
{ {
if (elem?.CreateDrawningAirplane() is T airplane) return false;
{
if (collection.Insert(airplane) == -1)
return false;
}
} }
_storages.Clear();
_storages.Add(record[0], collection); while (!sr.EndOfStream)
{
string[] record = sr.ReadLine().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);
if (collection == null)
{
return false;
}
collection.MaxCount = Convert.ToInt32(record[2]);
string[] set = record[3].Split(_separatorItems, StringSplitOptions.RemoveEmptyEntries);
foreach (string elem in set)
{
if (elem?.CreateDrawningAirplane() is T airplane)
{
if (collection.Insert(airplane) == -1)
return false;
}
}
_storages.Add(record[0], collection);
}
} }
return true; return true;
} }