ProjectStormtrooper/PlanesGenericStorage.java

@@ -1,11 +1,19 @@
 package ProjectStormtrooper;
 
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.List;
+import java.util.*;
+import java.io.BufferedReader;
+import java.io.BufferedWriter;
+import java.io.File;
+import java.io.FileReader;
+import java.io.FileWriter;
+import java.io.IOException;
 
 public class PlanesGenericStorage {
     final HashMap<String, PlanesGenericCollection<DrawingPlane, DrawingObjectPlane>> _planeStorages;
+    private static final String _separatorForKeyValue = "|";
+    private static final String _separatorRecords = ";";
+    private static final String _separatorForObject = ":";
+    private static final String _keyword = "PlanesStorage";
 
     public List<String> Keys() {
         return _planeStorages.keySet().stream().toList();
@@ -33,10 +41,77 @@ public class PlanesGenericStorage {
             return _planeStorages.get(ind);
         return null;
     }
+
     public DrawingObjectPlane GetByDoubleParameter(String storageName, int planeIndex) {
         if (_planeStorages.containsKey(storageName)) {
             return _planeStorages.get(storageName).GetU(planeIndex);
         }
         return null;
     }
+
+    public boolean SaveData(String filename) {
+        var file = new File(filename);
+        if (file.exists()) {
+            file.delete();
+        }
+        StringBuilder data = new StringBuilder();
+        for (Map.Entry<String, PlanesGenericCollection<DrawingPlane, DrawingObjectPlane>> record : _planeStorages.entrySet()) {
+            StringBuilder records = new StringBuilder();
+            for (DrawingPlane elem : record.getValue().GetPlanes()) {
+                records.append(elem != null ? ExtensionDrawingPlane.GetDataForSave(elem, _separatorForObject) + _separatorRecords : "");
+            }
+            data.append(record.getKey()).append(_separatorForKeyValue).append(records).append("\n");
+        }
+        if (data.isEmpty()) {
+            return false;
+        }
+        try (BufferedWriter writer = new BufferedWriter(new FileWriter(filename))) {
+            writer.write(_keyword + System.lineSeparator() + data);
+        } catch (IOException e) {
+            return false;
+        }
+        return true;
+    }
+
+    public boolean LoadData(String filename) {
+        var file = new File(filename);
+        if (!file.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(_keyword)) {
+                return false;
+            }
+            _planeStorages.clear();
+            s = reader.readLine();
+            while (s != null && !s.isEmpty()) {
+                String[] record = s.split(_separatorForKeyValue);
+                s = reader.readLine();
+                if (record.length != 2) {
+                    continue;
+                }
+                PlanesGenericCollection<DrawingPlane, DrawingObjectPlane> collection = new PlanesGenericCollection<>(_pictureWidth, _pictureHeight);
+                String[] set = record[1].split(_separatorRecords);
+                List<String> reversedSet = Arrays.asList(set);
+                Collections.reverse(reversedSet);
+                for (String elem : reversedSet) {
+                    DrawingPlane train = ExtensionDrawingPlane.CreateDrawingPlane(
+                            elem,
+                            _separatorForObject,
+                            _pictureWidth, _pictureHeight
+                    );
+                    if (train == null || collection.Add(train) == -1)
+                        return false;
+                }
+                _planeStorages.put(record[0], collection);
+            }
+        } catch (IOException e) {
+            return false;
+        }
+        return true;
+    }
 }