HexEditor: Add selection strings to the value inspector

Strings include ASCII, UTF-8, and UTF-16

Co-authored-by: Andreas Krohn <hamburger1984@gmail.com>

Userland/Applications/HexEditor/CMakeLists.txt

@@ -24,4 +24,4 @@ set(GENERATED_SOURCES
 )
 
 serenity_app(HexEditor ICON app-hex-editor)
-target_link_libraries(HexEditor PRIVATE LibCore LibGfx LibGUI LibConfig LibDesktop LibFileSystemAccessClient LibMain)
+target_link_libraries(HexEditor PRIVATE LibCore LibGfx LibGUI LibConfig LibDesktop LibFileSystemAccessClient LibMain LibTextCodec)

Userland/Applications/HexEditor/HexEditor.cpp

@@ -245,6 +245,18 @@ Optional<u8> HexEditor::get_byte(size_t position)
     return {};
 }
 
+ByteBuffer HexEditor::get_selected_bytes()
+{
+    auto num_selected_bytes = m_selection_end - m_selection_start;
+    ByteBuffer data;
+    data.ensure_capacity(num_selected_bytes);
+
+    for (size_t i = m_selection_start; i < m_selection_end; i++)
+        data.append(m_document->get(i).value);
+
+    return data;
+}
+
 void HexEditor::mousedown_event(GUI::MouseEvent& event)
 {
     if (event.button() != GUI::MouseButton::Primary) {

Userland/Applications/HexEditor/HexEditor.h

@@ -38,6 +38,7 @@ public:
     void open_file(NonnullOwnPtr<Core::File> file);
     ErrorOr<void> fill_selection(u8 fill_byte);
     Optional<u8> get_byte(size_t position);
+    ByteBuffer get_selected_bytes();
     ErrorOr<void> save_as(NonnullOwnPtr<Core::File>);
     ErrorOr<void> save();
 

Userland/Applications/HexEditor/HexEditorWidget.cpp

@@ -33,6 +33,7 @@
 #include <LibGUI/TextBox.h>
 #include <LibGUI/Toolbar.h>
 #include <LibGUI/ToolbarContainer.h>
+#include <LibTextCodec/Decoder.h>
 #include <string.h>
 
 REGISTER_WIDGET(HexEditor, HexEditor);
@@ -376,8 +377,24 @@ void HexEditorWidget::update_inspector_values(size_t position)
         value_inspector_model->set_parsed_value(ValueInspectorModel::ValueType::UTF16, "");
     }
 
+    auto selected_bytes = m_editor->get_selected_bytes();
+
+    auto ascii_string = DeprecatedString { ReadonlyBytes { selected_bytes } };
+    value_inspector_model->set_parsed_value(ValueInspectorModel::ValueType::ASCIIString, ascii_string);
+
+    Utf8View utf8_string_view { ReadonlyBytes { selected_bytes } };
+    utf8_string_view.validate(valid_bytes);
+    if (valid_bytes == 0)
+        value_inspector_model->set_parsed_value(ValueInspectorModel::ValueType::UTF8String, "");
+    else
+        // FIXME: replace control chars with something else - we don't want line breaks here ;)
+        value_inspector_model->set_parsed_value(ValueInspectorModel::ValueType::UTF8String, utf8_string_view.as_string());
+
     // FIXME: Parse as other values like Timestamp etc
 
+    DeprecatedString utf16_string = TextCodec::decoder_for("utf-16le"sv)->to_utf8(StringView(selected_bytes.span()));
+    value_inspector_model->set_parsed_value(ValueInspectorModel::ValueType::UTF16String, utf16_string);
+
     m_value_inspector->set_model(value_inspector_model);
     m_value_inspector->update();
 }

Userland/Applications/HexEditor/ValueInspectorModel.h

@@ -30,6 +30,9 @@ public:
         ASCII,
         UTF8,
         UTF16,
+        ASCIIString,
+        UTF8String,
+        UTF16String,
         __Count
     };
 
@@ -100,6 +103,12 @@ public:
             return "UTF-8";
         case UTF16:
             return "UTF-16";
+        case ASCIIString:
+            return "ASCII String";
+        case UTF8String:
+            return "UTF-8 String";
+        case UTF16String:
+            return "UTF-16 String";
         default:
             return "";
         }