add feature: UTF-8 characters support！

.gitignore

@@ -5,4 +5,5 @@
 .classpath
 .project
 .DS_Store
-*.iml
+*.iml
+/out/

src/me/konloch/kontainer/io/DiskReader.java

@@ -1,5 +1,7 @@
 package me.konloch.kontainer.io;
 
+import the.bytecode.club.bytecodeviewer.util.EncodeUtils;
+
 import java.io.BufferedReader;
 import java.io.FileReader;
 import java.io.File;
@@ -54,20 +56,18 @@ public class DiskReader {
     /**
      * Used to load from file
      */
-    public synchronized static String loadAsString(String fileName)
-            throws Exception {
-        String s = "";
+    public synchronized static String loadAsString(String fileName) throws Exception {
+        StringBuilder s = new StringBuilder();
 
-        BufferedReader reader = new BufferedReader(new FileReader(new File(
-                fileName)));
-        String add;
+        BufferedReader reader = new BufferedReader(new FileReader(new File(fileName)));
 
-        while ((add = reader.readLine()) != null)
-            s += add + System.getProperty("line.separator");
+        for (String add = reader.readLine(); add != null; add = reader.readLine()) {
+            s.append(EncodeUtils.unicodeToString(add)).append(System.getProperty("line.separator"));
+        }
 
         reader.close();
 
-        return s;
+        return s.toString();
     }
 
     /**

src/the/bytecode/club/bytecodeviewer/decompilers/ProcyonDecompiler.java

@@ -35,6 +35,7 @@ import com.strobel.assembler.metadata.TypeDefinition;
 import com.strobel.assembler.metadata.TypeReference;
 
 import the.bytecode.club.bytecodeviewer.BytecodeViewer;
+import the.bytecode.club.bytecodeviewer.util.EncodeUtils;
 import the.bytecode.club.bytecodeviewer.util.MiscUtils;
 
 /***************************************************************************
@@ -134,9 +135,8 @@ public class ProcyonDecompiler extends Decompiler {
             }
             StringWriter stringwriter = new StringWriter();
             settings.getLanguage().decompileType(resolvedType, new PlainTextOutput(stringwriter), decompilationOptions);
-            String decompiledSource = stringwriter.toString();
 
-            return decompiledSource;
+            return EncodeUtils.unicodeToString(stringwriter.toString());
         } catch (StackOverflowError | Exception e) {
             StringWriter sw = new StringWriter();
             e.printStackTrace(new PrintWriter(sw));

src/the/bytecode/club/bytecodeviewer/util/EncodeUtils.java

@@ -0,0 +1,98 @@
+package the.bytecode.club.bytecodeviewer.util;
+
+import org.apache.commons.lang3.StringUtils;
+
+import java.io.UnsupportedEncodingException;
+import java.nio.charset.StandardCharsets;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+/**
+ * Encoding Convert Utils
+ *
+ * @author hupan
+ * @date 2019-11-19 14:29
+ */
+public class EncodeUtils {
+
+    public static String stringToUnicode(String s) {
+        try {
+            StringBuilder out = new StringBuilder("");
+            byte[] bytes = s.getBytes("unicode");
+
+            for (int i = 0; i < bytes.length - 1; i += 2) {
+                out.append("\\u");
+                String str = Integer.toHexString(bytes[i + 1] & 0xff);
+                for (int j = str.length(); j < 2; j++) {
+                    out.append("0");
+                }
+                String str1 = Integer.toHexString(bytes[i] & 0xff);
+                out.append(str1);
+                out.append(str);
+            }
+            return out.toString();
+        } catch (UnsupportedEncodingException e) {
+            e.printStackTrace();
+            return null;
+        }
+    }
+
+    public static String unicodeToString(String str) {
+
+        Pattern pattern = Pattern.compile("(\\\\u(\\p{XDigit}{4}))");
+        Matcher matcher = pattern.matcher(str);
+        char ch;
+        while (matcher.find()) {
+            String group = matcher.group(2);
+            ch = (char) Integer.parseInt(group, 16);
+            String group1 = matcher.group(1);
+            str = str.replace(group1, ch + "");
+        }
+        return str;
+    }
+
+    public static String convertStringToUTF8(String s) {
+        if (s == null || StringUtils.EMPTY.equals(s)) {
+            return null;
+        }
+        StringBuilder sb = new StringBuilder();
+        try {
+            char c;
+            for (int i = 0; i < s.length(); i++) {
+                c = s.charAt(i);
+                if (c >= 0 && c <= 255) {
+                    sb.append(c);
+                } else {
+                    byte[] b;
+                    b = Character.toString(c).getBytes(StandardCharsets.UTF_8);
+                    for (int value : b) {
+                        int k = value;
+                        k = k < 0 ? k + 256 : k;
+                        sb.append(Integer.toHexString(k).toUpperCase());
+                    }
+                }
+            }
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        return sb.toString();
+    }
+
+    public static String convertUTF8ToString(String s) {
+        if (s == null || StringUtils.EMPTY.equals(s)) {
+            return null;
+        }
+        s = s.toUpperCase();
+        int total = s.length() / 2;
+        int pos = 0;
+        byte[] buffer = new byte[total];
+        for (int i = 0; i < total; i++) {
+            int start = i * 2;
+            buffer[i] = (byte) Integer.parseInt(s.substring(start, start + 2), 16);
+            pos++;
+        }
+
+        return new String(buffer, 0, pos, StandardCharsets.UTF_8);
+    }
+
+}