finishing static functions for isBinary of isText

Signed-off-by: Anthony Debucquoy <debucquoy.anthony@gmail.com>

app/src/main/java/school_project/Parsers/BinaryParser.java

@@ -5,6 +5,7 @@ import school_project.Piece;
 import school_project.Utils.Bitwise;
 
 import java.io.*;
+import java.nio.file.Files;
 import java.util.Arrays;
 
 public class BinaryParser implements FileParser {
@@ -13,8 +14,26 @@ public class BinaryParser implements FileParser {
      * Check if the file is a binary file suited for parsing
      * @return true if it is a binary File
      */
-    static boolean isBinaryFile(File file){
+    static boolean isBinaryFile(File file) throws IOException {
-        // TODO: 3/18/23
+        // TODO: 3/20/23 Need more testing 
+        if (Files.probeContentType(file.toPath()) != null)
+            return false;
+
+        FileInputStream r_file = new FileInputStream(file);
+        byte[] content = r_file.readAllBytes();
+
+        boolean header_found = false;
+        for (int i = 0; i < content.length; i++) {
+            if (!header_found) {
+                if (content[i] == 'S' && content[i + 1] == 'M' && content[i + 2] == 'S') {
+                    header_found = true;
+                }
+            } else {
+                if (content[i] == 'S' && content[i + 1] == 'M' && content[i + 2] == 'E') {
+                    return true;
+                }
+            }
+        }
         return false;
     }
 
@@ -33,6 +52,34 @@ public class BinaryParser implements FileParser {
         return ret;
     }
 
+    /**
+     * Extract Level data from file content
+     * @param fileStream file stream to read extract data from
+     * @return Level data as an array of byte
+     * @throws IOException Expected if we can't read the file
+     */
+    private static byte[] ExtractLevelData(FileInputStream fileStream) throws IOException {
+
+        byte[] bytes = fileStream.readAllBytes();
+
+        int start_position = 0, end_position = 0;
+        for (int i = 0; i < bytes.length; i++) {
+            if(bytes[i] == 83 && bytes[i+1] == 77 && bytes[i+2] == 83){ // SMS
+                start_position = i+3;
+                break;
+            }
+        }
+
+        for (int i = start_position; i < bytes.length; i++) {
+            if(bytes[i] == 83 && bytes[i+1] == 77 && bytes[i+2] == 69){ // SME
+                end_position = i;
+                break;
+            }
+        }
+
+        return Arrays.copyOfRange(bytes, start_position, end_position);
+    }
+
     /**
      * Get Pieces out of the level data
      * @param levelData full data of the level without header and footer
@@ -64,34 +111,6 @@ public class BinaryParser implements FileParser {
         return BuildMatrixFromBytes(map_width, map_height, map_data);
     }
 
-    /**
-     * Extract Level data from file content
-     * @param fileStream file stream to read extract data from
-     * @return Level data as an array of byte
-     * @throws IOException Expected if we can't read the file
-     */
-    private static byte[] ExtractLevelData(FileInputStream fileStream) throws IOException {
-
-        byte[] bytes = fileStream.readAllBytes();
-
-        int start_position = 0, end_position = 0;
-        for (int i = 0; i < bytes.length; i++) {
-            if(bytes[i] == 83 && bytes[i+1] == 77 && bytes[i+2] == 83){ // SMS
-                start_position = i+3;
-                break;
-            }
-        }
-
-        for (int i = start_position; i < bytes.length; i++) {
-            if(bytes[i] == 83 && bytes[i+1] == 77 && bytes[i+2] == 69){ // SME
-                end_position = i;
-                break;
-            }
-        }
-
-        return Arrays.copyOfRange(bytes, start_position, end_position);
-    }
-
     /**
      * Build a boolean Matrix From a byte array
      * Each Byte is composed of 8 bit, each bit is 1 or 0

app/src/main/java/school_project/Parsers/FileParserFactory.java

@@ -1,6 +1,7 @@
 package school_project.Parsers;
 
 import java.io.File;
+import java.io.IOException;
 import java.io.NotSerializableException;
 
 /**
@@ -14,7 +15,7 @@ import java.io.NotSerializableException;
  * @author tonitch
  */
 public class FileParserFactory {
-    public static FileParser createParser(File file) throws NotSerializableException{
+    public static FileParser createParser(File file) throws IOException {
         if(BinaryParser.isBinaryFile(file))
             return new BinaryParser();
         else if (TxtParser.isTextFile(file))

app/src/main/java/school_project/Parsers/TxtParser.java

@@ -3,14 +3,16 @@ package school_project.Parsers;
 import school_project.Map;
 
 import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
 
 public class TxtParser implements FileParser{
     /**
      * Check if the file is a text file
      * @return true if it is a text File
      */
-    static boolean isTextFile(File file){
+    static boolean isTextFile(File file) throws IOException {
-        return false;
+        return Files.probeContentType(file.toPath()).equals("text/plain");
         // TODO: 3/18/23
     }