HexEditor: Add UTF16 to the value inspector

Userland/Applications/HexEditor/HexEditorWidget.cpp

@@ -12,6 +12,7 @@
 #include "GoToOffsetDialog.h"
 #include "SearchResultsModel.h"
 #include "ValueInspectorModel.h"
+#include <AK/Forward.h>
 #include <AK/Optional.h>
 #include <AK/StringBuilder.h>
 #include <Applications/HexEditor/HexEditorWindowGML.h>
@@ -341,7 +342,19 @@ void HexEditorWidget::update_inspector_values(size_t position)
     else
         value_inspector_model->set_parsed_value(ValueInspectorModel::ValueType::UTF8, utf8_view.unicode_substring_view(0, 1).as_string());
 
-    // FIXME: Parse as other values like UTF16, Timestamp etc
+    if (byte_read_count % 2 == 0) {
+        Utf16View utf16_view { Span<u16 const> { reinterpret_cast<u16 const*>(&unsigned_64_bit_int), 4 } };
+        size_t valid_code_units;
+        utf8_view.validate(valid_code_units);
+        if (valid_code_units == 0)
+            value_inspector_model->set_parsed_value(ValueInspectorModel::ValueType::UTF16, "");
+        else
+            value_inspector_model->set_parsed_value(ValueInspectorModel::ValueType::UTF16, utf16_view.unicode_substring_view(0, 1).to_utf8());
+    } else {
+        value_inspector_model->set_parsed_value(ValueInspectorModel::ValueType::UTF16, "");
+    }
+
+    // FIXME: Parse as other values like Timestamp etc
 
     m_value_inspector->set_model(value_inspector_model);
     m_value_inspector->update();

Userland/Applications/HexEditor/ValueInspectorModel.h

@@ -9,6 +9,7 @@
 #include <AK/Hex.h>
 #include <AK/NonnullRefPtr.h>
 #include <AK/String.h>
+#include <AK/Utf16View.h>
 #include <AK/Utf8View.h>
 #include <AK/Vector.h>
 #include <LibGUI/Model.h>
@@ -28,6 +29,7 @@ public:
         Double,
         ASCII,
         UTF8,
+        UTF16,
         __Count
     };
 
@@ -96,6 +98,8 @@ public:
             return "ASCII";
         case UTF8:
             return "UTF-8";
+        case UTF16:
+            return "UTF-16";
         default:
             return "";
         }
@@ -137,6 +141,12 @@ public:
                     return static_cast<i32>(utf8_view.byte_length());
                 return 0;
             }
+            case UTF16: {
+                auto utf16_view = Utf16View(utf8_to_utf16(m_values.at(index.row())));
+                if (utf16_view.validate())
+                    return static_cast<i32>(utf16_view.length_in_code_units() * 2);
+                return 0;
+            }
             default:
                 return 0;
             }