Makes some changes to formatting and un-signing

Makes the unsign command convert formatting codes to human editable ones
Makes the format command work on unsigned books

README.md

@@ -49,6 +49,14 @@ Books without Borders has got your back!
 - Note that if real encryption is enabled, migrating the books will store them unencrypted (like they used to before
   real encryption was implemented) afterward.
 
+### Book formatting
+
+- Formatting codes are automatically turned back into `&` codes after un-signing a book.
+- `/formatbook` can be used on an unsigned book to preview formatting, but note that RGB colors will show up as
+  incorrect colors. That's just how that works. You must sign the book to see the real result.
+- `/formatbook` can be used on a signed book (if `Format_Book_After_Signing` is disabled) in order to make any color or
+  formatting codes in the book display as intended.
+
 ### Commands:
 
 An in-game description of available commands is available through the /bwb command.

src/main/java/net/knarcraft/bookswithoutborders/command/CommandFormat.java

@@ -30,15 +30,12 @@ public class CommandFormat implements TabExecutor {
             return false;
         }
 
-        if (InventoryHelper.notHoldingOneWrittenBookCheck(player,
+        ItemStack heldBook = InventoryHelper.getHeldBook(player);
-                stringFormatter.replacePlaceholder(Translatable.ERROR_NOT_HOLDING_WRITTEN_BOOK, "{action}",
+        if (heldBook == null) {
-                        stringFormatter.getUnFormattedColoredMessage(Translatable.ACTION_FORMAT)),
+            stringFormatter.displayErrorMessage(sender, Translatable.ERROR_NOT_HOLDING_ANY_BOOK);
-                stringFormatter.replacePlaceholder(Translatable.ERROR_ONLY_ONE_BOOK, "{action}",
-                        stringFormatter.getUnFormattedColoredMessage(Translatable.ACTION_FORMAT)))) {
             return false;
         }
         
-        ItemStack heldBook = InventoryHelper.getHeldBook(player, true);
         BookMeta meta = (BookMeta) heldBook.getItemMeta();
 
         if (meta == null) {

src/main/java/net/knarcraft/bookswithoutborders/command/CommandUnSign.java

@@ -68,6 +68,8 @@ public class CommandUnSign implements TabExecutor {
         if (book == null) {
             return;
         }
+
+        reverseColorCodes(book);
         InventoryHelper.replaceHeldItem(player, book, mainHand);
     }
 
@@ -78,4 +80,25 @@ public class CommandUnSign implements TabExecutor {
         return new ArrayList<>();
     }
 
+    /**
+     * Reverses colors of a previously formatted book
+     *
+     * @param book <p>The book to reverse colors of</p>
+     */
+    private void reverseColorCodes(@NotNull ItemStack book) {
+        try {
+            BookMeta meta = (BookMeta) book.getItemMeta();
+            if (meta != null) {
+                List<String> newPages = new ArrayList<>(meta.getPages().size());
+                for (String page : meta.getPages()) {
+                    newPages.add(page.replaceAll("§", "&"));
+                }
+                meta.setPages(newPages);
+                book.setItemMeta(meta);
+            }
+        } catch (NullPointerException ignored) {
+
+        }
+    }
+
 }