From 14123c6d1653b79b6c58e7766dc97e5d06bf1fc9 Mon Sep 17 00:00:00 2001
From: madmaxoft <github@xoft.cz>
Date: Sat, 20 Sep 2014 23:03:13 +0200
Subject: [PATCH] QtBiomeVisualiser: Added list of vanilla worlds.

---
 Tools/QtBiomeVisualiser/MainWindow.cpp | 134 +++++++++++++++++++++++--
 Tools/QtBiomeVisualiser/MainWindow.h   |  20 ++++
 2 files changed, 146 insertions(+), 8 deletions(-)

diff --git a/Tools/QtBiomeVisualiser/MainWindow.cpp b/Tools/QtBiomeVisualiser/MainWindow.cpp
index b6db806f9..c56cf8bc2 100644
--- a/Tools/QtBiomeVisualiser/MainWindow.cpp
+++ b/Tools/QtBiomeVisualiser/MainWindow.cpp
@@ -5,9 +5,13 @@
 #include <QMenuBar>
 #include <QApplication>
 #include <QFileDialog>
+#include <QSettings>
+#include <QDirIterator>
 #include "inifile/iniFile.h"
 #include "ChunkSource.h"
 #include "Generating/BioGen.h"
+#include "StringCompression.h"
+#include "WorldStorage/FastNBT.h"
 
 
 
@@ -16,6 +20,8 @@
 MainWindow::MainWindow(QWidget * parent) :
 	QMainWindow(parent)
 {
+	initMinecraftPath();
+
 	m_BiomeView = new BiomeView(this);
 	setCentralWidget(m_BiomeView);
 
@@ -66,8 +72,41 @@ void MainWindow::open()
 
 
 
+void MainWindow::openVanillaWorld()
+{
+	QAction * action = qobject_cast<QAction *>(sender());
+	if (action == nullptr)
+	{
+		return;
+	}
+	m_BiomeView->setChunkSource(std::shared_ptr<AnvilSource>(new AnvilSource(action->data().toString())));
+	m_BiomeView->redraw();
+}
+
+
+
+
+
+void MainWindow::initMinecraftPath()
+{
+	#ifdef Q_OS_MAC
+		m_MinecraftPath = QDir::homePath() + QDir::toNativeSeparators("/Library/Application Support/minecraft");
+	#elif defined Q_OS_WIN32
+		QSettings ini(QSettings::IniFormat, QSettings::UserScope, ".minecraft", "minecraft1");
+		m_MinecraftPath = QFileInfo(ini.fileName()).absolutePath();
+	#else
+		m_MinecraftPath = QDir::homePath() + QDir::toNativeSeparators("/.minecraft");
+	#endif
+}
+
+
+
+
+
 void MainWindow::createActions()
 {
+	createWorldActions();
+
 	m_actGen = new QAction(tr("&Generate..."), this);
 	m_actGen->setShortcut(tr("Ctrl+N"));
 	m_actGen->setStatusTip(tr("Open a generator INI file and display the generated biomes"));
@@ -93,15 +132,94 @@ void MainWindow::createActions()
 
 
 
-void MainWindow::createMenus()
+void MainWindow::createWorldActions()
 {
-	QMenu * mFile = menuBar()->addMenu(tr("&World"));
-	mFile->addAction(m_actGen);
-	mFile->addAction(m_actOpen);
-	mFile->addSeparator();
-	mFile->addAction(m_actReload);
-	mFile->addSeparator();
-	mFile->addAction(m_actExit);
+	QDir mc(m_MinecraftPath);
+	if (!mc.cd("saves"))
+	{
+		return;
+	}
+
+	QDirIterator it(mc);
+	int key = 1;
+	while (it.hasNext())
+	{
+		it.next();
+		if (!it.fileInfo().isDir())
+		{
+			continue;
+		}
+		QString name = getWorldName(it.filePath().toStdString());
+		if (name.isEmpty())
+		{
+			continue;
+		}
+		QAction * w = new QAction(this);
+		w->setText(name);
+		w->setData(it.filePath() + "/region");
+		if (key < 10)
+		{
+			w->setShortcut("Ctrl+" + QString::number(key));
+			key++;
+		}
+		connect(w, SIGNAL(triggered()), this, SLOT(openVanillaWorld()));
+		m_WorldActions.append(w);
+	}
+}
+
+
+
+
+
+void MainWindow::createMenus()
+{
+	QMenu * file = menuBar()->addMenu(tr("&Map"));
+	file->addAction(m_actGen);
+	file->addSeparator();
+	QMenu * worlds = file->addMenu(tr("Open existing"));
+	worlds->addActions(m_WorldActions);
+	if (m_WorldActions.empty())
+	{
+		worlds->setEnabled(false);
+	}
+	file->addAction(m_actOpen);
+	file->addSeparator();
+	file->addAction(m_actReload);
+	file->addSeparator();
+	file->addAction(m_actExit);
+}
+
+
+
+
+
+QString MainWindow::getWorldName(const AString & a_Path)
+{
+	AString levelData = cFile::ReadWholeFile(a_Path + "/level.dat");
+	if (levelData.empty())
+	{
+		// No such file / no data
+		return QString();
+	}
+
+	AString uncompressed;
+	if (UncompressStringGZIP(levelData.data(), levelData.size(), uncompressed) != Z_OK)
+	{
+		return QString();
+	}
+	cParsedNBT nbt(uncompressed.data(), uncompressed.size());
+	if (!nbt.IsValid())
+	{
+		return QString();
+	}
+	AString name = nbt.GetName(1);
+	OutputDebugStringA(name.c_str());
+	int levelNameTag = nbt.FindTagByPath(nbt.GetRoot(), "Data\\LevelName");
+	if ((levelNameTag <= 0) || (nbt.GetType(levelNameTag) != TAG_String))
+	{
+		return QString();
+	}
+	return QString::fromStdString(nbt.GetString(levelNameTag));
 }
 
 
diff --git a/Tools/QtBiomeVisualiser/MainWindow.h b/Tools/QtBiomeVisualiser/MainWindow.h
index b37bf4120..997d7a5d2 100644
--- a/Tools/QtBiomeVisualiser/MainWindow.h
+++ b/Tools/QtBiomeVisualiser/MainWindow.h
@@ -1,5 +1,6 @@
 #pragma once
 
+#include <QList>
 #include <QMainWindow>
 #include "BiomeView.h"
 
@@ -25,6 +26,9 @@ private slots:
 	/** Opens an existing world and displays the loaded biomes. */
 	void open();
 
+	/** Opens a vanilla world that is specified by the calling action. */
+	void openVanillaWorld();
+
 protected:
 	// Actions:
 	QAction * m_actGen;
@@ -32,12 +36,28 @@ protected:
 	QAction * m_actReload;
 	QAction * m_actExit;
 
+	/** List of actions that open the specific vanilla world. */
+	QList<QAction *> m_WorldActions;
+
+	/** Path to the vanilla folder. */
+	QString m_MinecraftPath;
+
+
+	/** Initializes the m_MinecraftPath based on the proper MC path */
+	void initMinecraftPath();
 
 	/** Creates the actions that the UI supports. */
 	void createActions();
 
+	/** Creates the actions that open a specific vanilla world. Iterates over the minecraft saves folder. */
+	void createWorldActions();
+
 	/** Creates the menu bar and connects its events. */
 	void createMenus();
+
+	/** Returns the name of the vanilla world in the specified path.
+	Reads the level.dat file for the name. Returns an empty string on failure. */
+	QString getWorldName(const AString & a_Path);
 };