allow to create swf from code only / export SWF to "Java code", which generates the SWF

libsrc/ffdec_lib/src/com/jpexs/helpers/Helper.java

@@ -12,7 +12,8 @@
  * Lesser General Public License for more details.
  * 
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library.
+ * License along with this library.
+ */
 package com.jpexs.helpers;
 
 import com.jpexs.decompiler.flash.AppResources;
@@ -179,6 +180,42 @@ public class Helper {
         return ret.toString();
     }
 
+    /**
+     * Escapes string by adding backslashes
+     *
+     * @param s String to escape
+     * @return Escaped string
+     */
+    public static String escapeJavaString(String s) {
+        StringBuilder ret = new StringBuilder(s.length());
+        for (int i = 0; i < s.length(); i++) {
+            char c = s.charAt(i);
+            if (c == '\n') {
+                ret.append("\\n");
+            } else if (c == '\r') {
+                ret.append("\\r");
+            } else if (c == '\t') {
+                ret.append("\\t");
+            } else if (c == '\b') {
+                ret.append("\\b");
+            } else if (c == '\t') {
+                ret.append("\\t");
+            } else if (c == '\f') {
+                ret.append("\\f");
+            } else if (c == '\\') {
+                ret.append("\\\\");
+            } else if (c == '"') {
+                ret.append("\\\"");
+            } else if (c < 32) {
+                ret.append("\\u").append(padZeros(Integer.toHexString((int) c), 4));
+            } else {
+                ret.append(c);
+            }
+        }
+
+        return ret.toString();
+    }
+
     public static String getValidHtmlId(String text) {
         // ID and NAME tokens must begin with a letter ([A-Za-z]) and 
         // may be followed by any number of letters, digits ([0-9]),