From 78db7d5dc902c44b63e2033bb81419f990edc951 Mon Sep 17 00:00:00 2001
From: Julien Rosset <jul.rosset@gmail.com>
Date: Wed, 30 Sep 2020 20:32:32 +0200
Subject: [PATCH] Begin Tag's structure

---
 .idea/misc.xml            |  5 +++
 CMakeLists.txt            |  5 +++
 MainWindow/MainWindow.cpp | 74 ++++++++++++++++++++++++---------------
 MainWindow/MainWindow.h   | 21 +++++++++--
 MainWindow/MainWindow.ui  | 46 +++++++++---------------
 NBT/AbstractNamedTag.cpp  | 34 ++++++++++++++++++
 NBT/AbstractNamedTag.h    | 53 ++++++++++++++++++++++++++++
 NBT/AbstractTag.cpp       | 41 ++++++++++++++++++++++
 NBT/AbstractTag.h         | 50 ++++++++++++++++++++++++++
 NBT/TagByte.cpp           | 14 ++++++++
 NBT/TagByte.h             | 20 +++++++++++
 NBT/TagEnd.cpp            | 11 ++++++
 NBT/TagEnd.h              | 17 +++++++++
 13 files changed, 331 insertions(+), 60 deletions(-)
 create mode 100644 NBT/AbstractNamedTag.cpp
 create mode 100644 NBT/AbstractNamedTag.h
 create mode 100644 NBT/AbstractTag.cpp
 create mode 100644 NBT/AbstractTag.h
 create mode 100644 NBT/TagByte.cpp
 create mode 100644 NBT/TagByte.h
 create mode 100644 NBT/TagEnd.cpp
 create mode 100644 NBT/TagEnd.h

diff --git a/.idea/misc.xml b/.idea/misc.xml
index 79b3c94..7b055cd 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -1,4 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="CMakeWorkspace" PROJECT_DIR="$PROJECT_DIR$" />
+  <component name="CidrRootsConfiguration">
+    <excludeRoots>
+      <file path="$PROJECT_DIR$/cmake-build-debug" />
+    </excludeRoots>
+  </component>
 </project>
\ No newline at end of file
diff --git a/CMakeLists.txt b/CMakeLists.txt
index c20f0b4..db20a94 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -20,5 +20,10 @@ add_executable(
     MainWindow/MainWindow.ui MainWindow/MainWindow.h MainWindow/MainWindow.cpp
 
     icons/breeze.qrc icons/breeze-dark.qrc
+
+    NBT/AbstractTag.h NBT/AbstractTag.cpp
+    NBT/AbstractNamedTag.h NBT/AbstractNamedTag.cpp
+    NBT/TagEnd.cpp NBT/TagEnd.h
+    NBT/TagByte.cpp NBT/TagByte.h
 )
 target_link_libraries(NBTModifier Qt5::Widgets Qt5::Svg)
\ No newline at end of file
diff --git a/MainWindow/MainWindow.cpp b/MainWindow/MainWindow.cpp
index 2d07289..c627562 100644
--- a/MainWindow/MainWindow.cpp
+++ b/MainWindow/MainWindow.cpp
@@ -1,53 +1,69 @@
 #include "MainWindow.h"
 #include "ui_MainWindow.h"
 
+#include <QtWidgets/QFileDialog>
 #include <QtWidgets/QMessageBox>
 
 MainWindow::MainWindow(QWidget *parent) :
     QMainWindow(parent),
-    ui(new Ui::MainWindow) {
+    m_ui(new Ui::MainWindow) {
     setupUi();
 }
 MainWindow::~MainWindow() {
-    delete ui;
+    delete m_ui;
 }
 
 void MainWindow::setupUi() {
-    ui->setupUi(this);
+    m_ui->setupUi(this);
 
     //region Shortcuts
-    ui->actionFileNew->setShortcut(QKeySequence::New);
-    ui->actionFileOpen->setShortcut(QKeySequence::Open);
-    ui->actionFileSave->setShortcut(QKeySequence::Save);
-    ui->actionFileSaveAs->setShortcut(QKeySequence::SaveAs);
-    ui->actionFileReload->setShortcut(QKeySequence::Refresh);
-    ui->actionFileClose->setShortcut(QKeySequence::Close);
-    ui->actionFileSettings->setShortcut(QKeySequence::Preferences);
-    ui->actionFileQuit->setShortcut(QKeySequence::Quit);
-
-    ui->actionEditUndo->setShortcut(QKeySequence::Undo);
-    ui->actionEditRedo->setShortcut(QKeySequence::Redo);
-    ui->actionEditCopy->setShortcut(QKeySequence::Copy);
-    ui->actionEditCut->setShortcut(QKeySequence::Cut);
-    ui->actionEditPaste->setShortcut(QKeySequence::Paste);
-    ui->actionEditModify->setShortcut(QKeySequence(tr("F2")));
-    ui->actionEditDelete->setShortcut(QKeySequence::Delete);
-    ui->actionEditMoveUp->setShortcut(QKeySequence(tr("Ctrl+Up")));
-    ui->actionEditMoveDown->setShortcut(QKeySequence(tr("Ctrl+Down")));
-
-    ui->actionSearchFind->setShortcut(QKeySequence::Find);
-    ui->actionSearchFindNext->setShortcut(QKeySequence::FindNext);
-    ui->actionSearchFindPrevious->setShortcut(QKeySequence::FindPrevious);
-    ui->actionSearchReplace->setShortcut(QKeySequence::Replace);
-
-    ui->actionHelpAboutNBTModifier->setShortcut(QKeySequence::HelpContents);
+    m_ui->actionFileNew->setShortcut(QKeySequence::New);
+    m_ui->actionFileOpen->setShortcut(QKeySequence::Open);
+    m_ui->actionFileSave->setShortcut(QKeySequence::Save);
+    m_ui->actionFileSaveAs->setShortcut(QKeySequence::SaveAs);
+    m_ui->actionFileReload->setShortcut(QKeySequence::Refresh);
+    m_ui->actionFileClose->setShortcut(QKeySequence::Close);
+    m_ui->actionFileSettings->setShortcut(QKeySequence::Preferences);
+    m_ui->actionFileQuit->setShortcut(QKeySequence::Quit);
+
+    m_ui->actionEditUndo->setShortcut(QKeySequence::Undo);
+    m_ui->actionEditRedo->setShortcut(QKeySequence::Redo);
+    m_ui->actionEditCopy->setShortcut(QKeySequence::Copy);
+    m_ui->actionEditCut->setShortcut(QKeySequence::Cut);
+    m_ui->actionEditPaste->setShortcut(QKeySequence::Paste);
+    m_ui->actionEditModify->setShortcut(QKeySequence(tr("F2")));
+    m_ui->actionEditDelete->setShortcut(QKeySequence::Delete);
+    m_ui->actionEditMoveUp->setShortcut(QKeySequence(tr("Ctrl+Up")));
+    m_ui->actionEditMoveDown->setShortcut(QKeySequence(tr("Ctrl+Down")));
+
+    m_ui->actionSearchFind->setShortcut(QKeySequence::Find);
+    m_ui->actionSearchFindNext->setShortcut(QKeySequence::FindNext);
+    m_ui->actionSearchFindPrevious->setShortcut(QKeySequence::FindPrevious);
+    m_ui->actionSearchReplace->setShortcut(QKeySequence::Replace);
+
+    m_ui->actionHelpAboutNBTModifier->setShortcut(QKeySequence::HelpContents);
     //endregion
 
     //region Signals
-    connect(ui->actionHelpAboutQt, &QAction::triggered, qApp, &QApplication::aboutQt);
+    connect(m_ui->actionHelpAboutQt, &QAction::triggered, qApp, &QApplication::aboutQt);
     //endregion
 }
 
+void MainWindow::on_actionFileOpen_triggered() {
+    const QString path = QFileDialog::getOpenFileName(
+        this,
+        tr("Choose a file to open"),
+        qApp->applicationDirPath(),
+        QString(tr("Data files (*.dat);;All files (*.*)"))
+    );
+    if (path.isEmpty()) {
+        return;
+    }
+
+    const QFile file(path, this);
+
+}
+
 void MainWindow::on_actionHelpAboutNBTModifier_triggered() {
     QMessageBox info(this);
 
diff --git a/MainWindow/MainWindow.h b/MainWindow/MainWindow.h
index f7e1cb3..61afff4 100644
--- a/MainWindow/MainWindow.h
+++ b/MainWindow/MainWindow.h
@@ -7,6 +7,9 @@ namespace Ui {
     class MainWindow;
 }
 
+/**
+ * Main window of application
+ */
 class MainWindow : public QMainWindow {
     Q_OBJECT
 
@@ -15,11 +18,25 @@ public:
     virtual ~MainWindow() override;
 
 private:
-    Ui::MainWindow *ui;
-
+    /**
+     * Internal window design
+     */
+    Ui::MainWindow *m_ui;
+
+    /**
+     * Build the internal window design
+     */
     void setupUi();
 
 private slots:
+    /**
+     * Open a file
+     */
+    void on_actionFileOpen_triggered();
+
+    /**
+     * Display the "about" dialog
+     */
     void on_actionHelpAboutNBTModifier_triggered();
 };
 
diff --git a/MainWindow/MainWindow.ui b/MainWindow/MainWindow.ui
index c0a7202..9f4d639 100644
--- a/MainWindow/MainWindow.ui
+++ b/MainWindow/MainWindow.ui
@@ -28,36 +28,22 @@
      <number>0</number>
     </property>
     <item>
-     <widget class="QTreeWidget" name="treeWidget">
-      <property name="tabKeyNavigation">
-       <bool>true</bool>
+     <widget class="QMdiArea" name="mdiArea">
+      <property name="activationOrder">
+       <enum>QMdiArea::StackingOrder</enum>
       </property>
-      <property name="dragEnabled">
-       <bool>true</bool>
+      <property name="viewMode">
+       <enum>QMdiArea::TabbedView</enum>
       </property>
-      <property name="dragDropOverwriteMode">
+      <property name="documentMode">
        <bool>true</bool>
       </property>
-      <property name="dragDropMode">
-       <enum>QAbstractItemView::InternalMove</enum>
-      </property>
-      <property name="selectionMode">
-       <enum>QAbstractItemView::MultiSelection</enum>
-      </property>
-      <property name="uniformRowHeights">
+      <property name="tabsClosable">
        <bool>true</bool>
       </property>
-      <property name="headerHidden">
+      <property name="tabsMovable">
        <bool>true</bool>
       </property>
-      <attribute name="headerVisible">
-       <bool>false</bool>
-      </attribute>
-      <column>
-       <property name="text">
-        <string notr="true">1</string>
-       </property>
-      </column>
      </widget>
     </item>
    </layout>
@@ -68,7 +54,7 @@
      <x>0</x>
      <y>0</y>
      <width>800</width>
-     <height>29</height>
+     <height>21</height>
     </rect>
    </property>
    <widget class="QMenu" name="menuFile">
@@ -76,7 +62,7 @@
      <string>&amp;File</string>
     </property>
     <addaction name="actionFileNew"/>
-    <addaction name="actionFileOpen"/>
+    <addaction name="actionFileOpenFile"/>
     <addaction name="separator"/>
     <addaction name="actionFileSave"/>
     <addaction name="actionFileSaveAs"/>
@@ -170,13 +156,13 @@
     <string>&amp;New</string>
    </property>
   </action>
-  <action name="actionFileOpen">
+  <action name="actionFileOpenFile">
    <property name="icon">
     <iconset theme="document-open">
      <normaloff>.</normaloff>.</iconset>
    </property>
    <property name="text">
-    <string>&amp;Open</string>
+    <string>&amp;Open file</string>
    </property>
   </action>
   <action name="actionFileSave">
@@ -415,10 +401,12 @@
     <string>Settings</string>
    </property>
   </action>
+  <action name="actionOpen_directory">
+   <property name="text">
+    <string>Open directory</string>
+   </property>
+  </action>
  </widget>
- <tabstops>
-  <tabstop>treeWidget</tabstop>
- </tabstops>
  <resources/>
  <connections>
   <connection>
diff --git a/NBT/AbstractNamedTag.cpp b/NBT/AbstractNamedTag.cpp
new file mode 100644
index 0000000..d1d923d
--- /dev/null
+++ b/NBT/AbstractNamedTag.cpp
@@ -0,0 +1,34 @@
+#include "AbstractNamedTag.h"
+
+#include <QtEndian>
+#include <QtCore/QDataStream>
+
+AbstractNamedTag::AbstractNamedTag(const quint8 id) : AbstractTag(id) {}
+
+const bool AbstractNamedTag::readFromData(QDataStream &data) {
+    quint16 size;
+
+    data >> size;
+    size = qFromBigEndian(size);
+
+    char *rawName = new char[size];
+    if (data.readRawData(rawName, size) == -1) {
+        return false;
+    }
+
+    m_name = QString::fromUtf8(rawName);
+    return readPayloadFromData(data);
+}
+const bool AbstractNamedTag::writeToData(QDataStream &data) const {
+    const QByteArray rawName = m_name.toUtf8();
+
+    data << qToBigEndian(rawName.size()) << rawName.constData();
+    return writePayloadToData(data);
+}
+
+const QString &AbstractNamedTag::name() const {
+    return m_name;
+}
+void AbstractNamedTag::setName(const QString &name) {
+    m_name = name;
+}
\ No newline at end of file
diff --git a/NBT/AbstractNamedTag.h b/NBT/AbstractNamedTag.h
new file mode 100644
index 0000000..178b856
--- /dev/null
+++ b/NBT/AbstractNamedTag.h
@@ -0,0 +1,53 @@
+#ifndef NBTMODIFIER_ABSTRACTNAMEDTAG_H
+#define NBTMODIFIER_ABSTRACTNAMEDTAG_H
+
+#include "AbstractTag.h"
+
+#include <QtCore/QString>
+
+class AbstractNamedTag : public AbstractTag {
+public:
+    /**
+     * Get the tag name
+     *
+     * @return The tag name
+     */
+    const QString& name() const;
+    /**
+     * Set the tag name
+     *
+     * @param name The new tag name
+     */
+    void setName (const QString &name);
+
+protected:
+    explicit AbstractNamedTag(const quint8 id);
+
+    virtual const bool readFromData(QDataStream &data) override;
+    virtual const bool writeToData(QDataStream &data) const override;
+
+    /**
+     * Read a tag payload from a data stream
+     *
+     * @param data The data stream
+     *
+     * @return True if read is success, otherwise false
+     */
+    virtual const bool readPayloadFromData(QDataStream &data) = 0;
+    /**
+     * Write a tag payload to a data stream
+     *
+     * @param data The data stream
+     *
+     * @return True if write is success, otherwise false
+     */
+    virtual const bool writePayloadToData(QDataStream &data) const = 0;
+
+private:
+    /**
+     * The tag name
+     */
+    QString m_name;
+};
+
+#endif //NBTMODIFIER_ABSTRACTNAMEDTAG_H
diff --git a/NBT/AbstractTag.cpp b/NBT/AbstractTag.cpp
new file mode 100644
index 0000000..29eb2a2
--- /dev/null
+++ b/NBT/AbstractTag.cpp
@@ -0,0 +1,41 @@
+#include "AbstractTag.h"
+
+#include "TagEnd.h"
+#include "TagByte.h"
+
+#include <QtCore/QDataStream>
+
+AbstractTag::AbstractTag(const quint8 id) : m_id(id) {}
+
+const quint8 AbstractTag::id() const {
+    return m_id;
+}
+
+AbstractTag *AbstractTag::fromData(QDataStream &data, bool *ok) {
+    quint8 id;
+    data >> id;
+
+    AbstractTag *tag = nullptr;
+    switch (id) {
+        case TagEnd::ID:
+            tag = new TagEnd();
+
+        case TagByte::ID:
+            tag = new TagByte();
+    }
+    if (tag == nullptr) {
+        return nullptr;
+    }
+
+    *ok = tag->readFromData(data);
+    return tag;
+}
+QByteArray AbstractTag::toData(bool *ok) {
+    QByteArray data;
+    QDataStream stream(data);
+
+    stream << id();
+    *ok = writeToData(stream);
+
+    return data;
+}
\ No newline at end of file
diff --git a/NBT/AbstractTag.h b/NBT/AbstractTag.h
new file mode 100644
index 0000000..0836290
--- /dev/null
+++ b/NBT/AbstractTag.h
@@ -0,0 +1,50 @@
+#ifndef NBTMODIFIER_ABSTRACTTAG_H
+#define NBTMODIFIER_ABSTRACTTAG_H
+
+#include <QtGlobal>
+
+class QDataStream;
+
+/**
+ * Interface for all NBT tags
+ */
+class AbstractTag {
+public:
+    const quint8 id() const;
+
+    static AbstractTag *fromData(QDataStream &data, bool *ok = nullptr);
+    QByteArray toData(bool *ok = nullptr);
+
+protected:
+    /**
+     * Create a new tag
+     *
+     * @param id
+     */
+    explicit AbstractTag(const quint8 id);
+
+    /**
+     * Read a tag from a data stream
+     *
+     * @param data The data stream
+     *
+     * @return True if read is success, otherwise false
+     */
+    virtual const bool readFromData(QDataStream &data) = 0;
+    /**
+     * Write a tag to a data stream
+     *
+     * @param data The data stream
+     *
+     * @return True if write is success, otherwise false
+     */
+    virtual const bool writeToData(QDataStream &data) const = 0;
+
+private:
+    /**
+     * The tag's ID
+     */
+    const quint8 m_id;
+};
+
+#endif //NBTMODIFIER_ABSTRACTTAG_H
diff --git a/NBT/TagByte.cpp b/NBT/TagByte.cpp
new file mode 100644
index 0000000..aa1743f
--- /dev/null
+++ b/NBT/TagByte.cpp
@@ -0,0 +1,14 @@
+#include "TagByte.h"
+
+#include <QtCore/QDataStream>
+
+TagByte::TagByte(const qint8 value) : AbstractNamedTag(ID), m_value(value) {}
+
+bool const TagByte::readPayloadFromData(QDataStream &data) {
+    data >> m_value;
+    return true;
+}
+bool const TagByte::writePayloadToData(QDataStream &data) const {
+    data << m_value;
+    return true;
+}
diff --git a/NBT/TagByte.h b/NBT/TagByte.h
new file mode 100644
index 0000000..1a4aa72
--- /dev/null
+++ b/NBT/TagByte.h
@@ -0,0 +1,20 @@
+#ifndef NBTMODIFIER_TAGBYTE_H
+#define NBTMODIFIER_TAGBYTE_H
+
+#include "AbstractNamedTag.h"
+
+class TagByte : public AbstractNamedTag {
+public:
+    static constexpr quint8 ID = 1;
+
+    TagByte(const qint8 value = 0);
+
+protected:
+    virtual bool const readPayloadFromData(QDataStream &data) override;
+    virtual bool const writePayloadToData(QDataStream &data) const override;
+
+private:
+    qint8 m_value;
+};
+
+#endif //NBTMODIFIER_TAGBYTE_H
diff --git a/NBT/TagEnd.cpp b/NBT/TagEnd.cpp
new file mode 100644
index 0000000..1d24e5d
--- /dev/null
+++ b/NBT/TagEnd.cpp
@@ -0,0 +1,11 @@
+#include "TagEnd.h"
+
+TagEnd::TagEnd() : AbstractTag(ID) {
+}
+
+bool const TagEnd::readFromData(QDataStream &data) {
+    return true;
+}
+bool const TagEnd::writeToData(QDataStream &data) const {
+    return true;
+}
diff --git a/NBT/TagEnd.h b/NBT/TagEnd.h
new file mode 100644
index 0000000..18fa538
--- /dev/null
+++ b/NBT/TagEnd.h
@@ -0,0 +1,17 @@
+#ifndef NBTMODIFIER_TAGEND_H
+#define NBTMODIFIER_TAGEND_H
+
+#include "AbstractTag.h"
+
+class TagEnd : public AbstractTag {
+public:
+    static constexpr quint8 ID = 0;
+
+    explicit TagEnd();
+
+protected:
+    virtual bool const readFromData(QDataStream &data) override;
+    virtual bool const writeToData(QDataStream &data) const override;
+};
+
+#endif //NBTMODIFIER_TAGEND_H