From 585712ebf9c58dc21022df323db5a2a19d3efa60 Mon Sep 17 00:00:00 2001
From: "ns.potapov" <ns.potapov@yandex.ru>
Date: Sun, 17 Dec 2023 21:37:42 +0400
Subject: [PATCH] =?UTF-8?q?=D0=94=D0=BE=D0=B1=D0=B0=D0=B2=D0=BB=D0=B5?=
 =?UTF-8?q?=D0=BD=20=D0=BC=D0=B5=D1=82=D0=BE=D0=B4=20Clear?=
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---
 .../PlanesGenericCollection.java              |  4 +
 ProjectStormtrooper/PlanesGenericStorage.java | 74 ++++++++++++++++++-
 ProjectStormtrooper/SetGeneric.java           |  4 +
 3 files changed, 80 insertions(+), 2 deletions(-)

diff --git a/ProjectStormtrooper/PlanesGenericCollection.java b/ProjectStormtrooper/PlanesGenericCollection.java
index 116d617..c5858c3 100644
--- a/ProjectStormtrooper/PlanesGenericCollection.java
+++ b/ProjectStormtrooper/PlanesGenericCollection.java
@@ -79,4 +79,8 @@ public class PlanesGenericCollection<T extends DrawingPlane, U extends IMoveable
             i++;
         }
     }
+
+    public void clear() {
+        _collection.clear();
+    }
 }
diff --git a/ProjectStormtrooper/PlanesGenericStorage.java b/ProjectStormtrooper/PlanesGenericStorage.java
index 2f09fc3..fb1ad49 100644
--- a/ProjectStormtrooper/PlanesGenericStorage.java
+++ b/ProjectStormtrooper/PlanesGenericStorage.java
@@ -11,9 +11,13 @@ import java.io.IOException;
 public class PlanesGenericStorage {
     final HashMap<String, PlanesGenericCollection<DrawingPlane, DrawingObjectPlane>> _planeStorages;
     private static final String _separatorForKeyValue = "@";
+    private static final String _separatorForKeyValueSingle = "@@";
     private static final String _separatorRecords = ";";
+    private static final String _separatorRecordsSingle = ";;";
     private static final String _separatorForObject = ":";
+    private static final String _separatorForObjectSingle = "::";
     private static final String _keyword = "PlanesStorage";
+    private static final String _keywordSingle = "PlanesStorageSingle";
 
     public List<String> Keys() {
         return _planeStorages.keySet().stream().toList();
@@ -49,6 +53,72 @@ public class PlanesGenericStorage {
         return null;
     }
 
+    public boolean SaveDataSingle(String filename, String key) {
+        var file = new File(filename);
+        if (file.exists()) {
+            file.delete();
+        }
+        StringBuilder data = new StringBuilder();
+        data.append(key).append("\n");
+        for (DrawingPlane elem : _planeStorages.get(key).GetPlanes())
+            data.append(elem != null ? ExtensionDrawingPlane.GetDataForSave(elem, _separatorForObjectSingle) + "\n" : "");
+        if (data.isEmpty()) {
+            return false;
+        }
+        try (BufferedWriter writer = new BufferedWriter(new FileWriter(filename))) {
+            writer.write(_keywordSingle + System.lineSeparator() + data);
+        } catch (IOException e) {
+            return false;
+        }
+        return true;
+    }
+
+    public boolean LoadDataSingle(String filename){
+        if (!new File(filename).exists()) {
+            return false;
+        }
+        try (BufferedReader reader = new BufferedReader(new FileReader(filename))) {
+            String s = reader.readLine();
+            if (s == null || s.isEmpty())
+                return false;
+            if (!s.startsWith(_keywordSingle))
+                return false;
+            String key = reader.readLine();
+            if (key == null || key.isEmpty())
+                return false;
+            PlanesGenericCollection<DrawingPlane, DrawingObjectPlane> collection;
+            if (_planeStorages.containsKey(key)){
+                collection = _planeStorages.get(key);
+                collection.clear();
+            }
+            else
+                collection = new PlanesGenericCollection<>(_pictureWidth, _pictureHeight);
+            List<String> plainsStrings = new ArrayList<>();
+            s = reader.readLine();
+            while (s != null && !s.isEmpty()){
+                plainsStrings.add(s);
+                s = reader.readLine();
+            }
+            Collections.reverse(plainsStrings);
+            for (String elem : plainsStrings) {
+                DrawingPlane plane = ExtensionDrawingPlane.CreateDrawingPlane(
+                        elem,
+                        _separatorForObject,
+                        _pictureWidth,
+                        _pictureHeight
+                );
+                if (plane == null || collection.Add(plane) == -1)
+                    return false;
+            }
+
+            _planeStorages.put(key, collection);
+        } catch (IOException e) {
+            return false;
+        }
+
+        return true;
+    }
+
     public boolean SaveData(String filename) {
         var file = new File(filename);
         if (file.exists()) {
@@ -99,12 +169,12 @@ public class PlanesGenericStorage {
                 List<String> reversedSet = Arrays.asList(set);
                 Collections.reverse(reversedSet);
                 for (String elem : reversedSet) {
-                    DrawingPlane train = ExtensionDrawingPlane.CreateDrawingPlane(
+                    DrawingPlane plane = ExtensionDrawingPlane.CreateDrawingPlane(
                             elem,
                             _separatorForObject,
                             _pictureWidth, _pictureHeight
                     );
-                    if (train == null || collection.Add(train) == -1)
+                    if (plane == null || collection.Add(plane) == -1)
                         return false;
                 }
                 _planeStorages.put(record[0], collection);
diff --git a/ProjectStormtrooper/SetGeneric.java b/ProjectStormtrooper/SetGeneric.java
index 63fd612..9d9201b 100644
--- a/ProjectStormtrooper/SetGeneric.java
+++ b/ProjectStormtrooper/SetGeneric.java
@@ -63,4 +63,8 @@ public class SetGeneric<T extends DrawingPlane> {
     public ArrayList<T> GetEnumerator() {
         return _places;
     }
+
+    public void clear() {
+        _places.clear();
+    }
 }