basket/src/archive.cpp

/***************************************************************************
 *   Copyright (C) 2006 by Sébastien Laoût                                 *
 *   slaout@linux62.org                                                    *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.             *
 ***************************************************************************/

#include <tqstring.h>
#include <tqstringlist.h>
#include <tqvaluelist.h>
#include <tqmap.h>
#include <tqdir.h>
#include <ktar.h>
#include <tqdom.h>
#include <kmessagebox.h>
#include <tqpixmap.h>
#include <tqpainter.h>
#include <kstandarddirs.h>
#include <kapplication.h>
#include <kiconloader.h>
#include <kprogress.h>
#include <tdemainwindow.h>

#include "archive.h"
#include "global.h"
#include "bnpview.h"
#include "basket.h"
#include "basketlistview.h"
#include "basketfactory.h"
#include "tag.h"
#include "xmlwork.h"
#include "tools.h"
#include "backgroundmanager.h"
#include "formatimporter.h"

#include <iostream>

void Archive::save(Basket *basket, bool withSubBaskets, const TQString &destination)
{
	TQDir dir;

	KProgressDialog dialog(0, 0, i18n("Save as Basket Archive"), i18n("Saving as basket archive. Please wait..."), /*Not modal, for password dialogs!*/false);
	dialog.showCancelButton(false);
	dialog.setAutoClose(true);
	dialog.show();
	KProgress *progress = dialog.progressBar();
	progress->setTotalSteps(/*Preparation:*/1 + /*Finishing:*/1 + /*Basket:*/1 + /*SubBaskets:*/(withSubBaskets ? Global::bnpView->basketCount(Global::bnpView->listViewItemForBasket(basket)) : 0));
	progress->setValue(0);

	// Create the temporar folder:
	TQString tempFolder = Global::savesFolder() + "temp-archive/";
	dir.mkdir(tempFolder);

	// Create the temporar archive file:
	TQString tempDestination = tempFolder + "temp-archive.tar.gz";
	KTar tar(tempDestination, "application/x-gzip");
	tar.open(IO_WriteOnly);
	tar.writeDir("baskets", "", "");

	progress->advance(1); // Preparation finished
	std::cout << "Preparation finished out of " << progress->totalSteps() << std::endl;

	// Copy the baskets data into the archive:
	TQStringList backgrounds;
	saveBasketToArchive(basket, withSubBaskets, &tar, backgrounds, tempFolder, progress);

	// Create a Small baskets.xml Document:
	TQDomDocument document("basketTree");
	TQDomElement root = document.createElement("basketTree");
	document.appendChild(root);
	Global::bnpView->saveSubHierarchy(Global::bnpView->listViewItemForBasket(basket), document, root, withSubBaskets);
	Basket::safelySaveToFile(tempFolder + "baskets.xml", "<?xml version=\"1.0\" encoding=\"UTF-8\" ?>\n" + document.toString());
	tar.addLocalFile(tempFolder + "baskets.xml", "baskets/baskets.xml");
	dir.remove(tempFolder + "baskets.xml");

	// Save a Small tags.xml Document:
	TQValueList<Tag*> tags;
	listUsedTags(basket, withSubBaskets, tags);
	Tag::saveTagsTo(tags, tempFolder + "tags.xml");
	tar.addLocalFile(tempFolder + "tags.xml", "tags.xml");
	dir.remove(tempFolder + "tags.xml");

	// Save Tag Emblems (in case they are loaded on a computer that do not have those icons):
	TQString tempIconFile = tempFolder + "icon.png";
	for (Tag::List::iterator it = tags.begin(); it != tags.end(); ++it) {
		State::List states = (*it)->states();
		for (State::List::iterator it2 = states.begin(); it2 != states.end(); ++it2) {
			State *state = (*it2);
			TQPixmap icon = kapp->iconLoader()->loadIcon(state->emblem(), TDEIcon::Small, 16, TDEIcon::DefaultState, /*path_store=*/0L, /*canReturnNull=*/true);
			if (!icon.isNull()) {
				icon.save(tempIconFile, "PNG");
				TQString iconFileName = state->emblem().replace('/', '_');
				tar.addLocalFile(tempIconFile, "tag-emblems/" + iconFileName);
			}
		}
	}
	dir.remove(tempIconFile);

	// Finish Tar.Gz Exportation:
	tar.close();

	// Computing the File Preview:
	Basket *previewBasket = basket; // FIXME: Use the first non-empty basket!
	TQPixmap previewPixmap(previewBasket->visibleWidth(), previewBasket->visibleHeight());
	TQPainter painter(&previewPixmap);
	// Save old state, and make the look clean ("smile, you are filmed!"):
	NoteSelection *selection = previewBasket->selectedNotes();
	previewBasket->unselectAll();
	Note *focusedNote = previewBasket->focusedNote();
	previewBasket->setFocusedNote(0);
	previewBasket->doHoverEffects(0, Note::None);
	// Take the screenshot:
	previewBasket->drawContents(&painter, 0, 0, previewPixmap.width(), previewPixmap.height());
	// Go back to the old look:
	previewBasket->selectSelection(selection);
	previewBasket->setFocusedNote(focusedNote);
	previewBasket->doHoverEffects();
	// End and save our splandid painting:
	painter.end();
	TQImage previewImage = previewPixmap.convertToImage();
	const int PREVIEW_SIZE = 256;
	previewImage = previewImage.scale(PREVIEW_SIZE, PREVIEW_SIZE, TQ_ScaleMin);
	previewImage.save(tempFolder + "preview.png", "PNG");

	// Finaly Save to the Real Destination file:
	TQFile file(destination);
	if (file.open(IO_WriteOnly)) {
		ulong previewSize = TQFile(tempFolder + "preview.png").size();
		ulong archiveSize = TQFile(tempDestination).size();
		TQTextStream stream(&file);
		stream.setEncoding(TQTextStream::Latin1);
		stream << "BasKetNP:archive\n"
		       << "version:0.6.1\n"
//		       << "read-compatible:0.6.1\n"
//		       << "write-compatible:0.6.1\n"
		       << "preview*:" << previewSize << "\n";
		// Copy the Preview File:
		const TQ_ULONG BUFFER_SIZE = 1024;
		char *buffer = new char[BUFFER_SIZE];
		TQ_LONG sizeRead;
		TQFile previewFile(tempFolder + "preview.png");
		if (previewFile.open(IO_ReadOnly)) {
			while ((sizeRead = previewFile.readBlock(buffer, BUFFER_SIZE)) > 0)
				file.writeBlock(buffer, sizeRead);
		}
		stream << "archive*:" << archiveSize << "\n";
		// Copy the Archive File:
		TQFile archiveFile(tempDestination);
		if (archiveFile.open(IO_ReadOnly)) {
			while ((sizeRead = archiveFile.readBlock(buffer, BUFFER_SIZE)) > 0)
				file.writeBlock(buffer, sizeRead);
		}
		// Clean Up:
		delete buffer;
		buffer = 0;
		file.close();
	}

	progress->advance(1); // Finishing finished
	std::cout << "Finishing finished" << std::endl;

	// Clean Up Everything:
	dir.remove(tempFolder + "preview.png");
	dir.remove(tempDestination);
	dir.rmdir(tempFolder);
}

void Archive::saveBasketToArchive(Basket *basket, bool recursive, KTar *tar, TQStringList &backgrounds, const TQString &tempFolder, KProgress *progress)
{
	// Basket need to be loaded for tags exportation.
	// We load it NOW so that the progress bar really reflect the state of the exportation:
	if (!basket->isLoaded()) {
		basket->load();
	}

	TQDir dir;
	// Save basket data:
	tar->addLocalDirectory(basket->fullPath(), "baskets/" + basket->folderName());
	tar->addLocalFile(basket->fullPath() + ".basket", "baskets/" + basket->folderName() + ".basket"); // The hidden files were not added
	// Save basket icon:
	TQString tempIconFile = tempFolder + "icon.png";
	if (!basket->icon().isEmpty() && basket->icon() != "basket") {
		TQPixmap icon = kapp->iconLoader()->loadIcon(basket->icon(), TDEIcon::Small, 16, TDEIcon::DefaultState, /*path_store=*/0L, /*canReturnNull=*/true);
		if (!icon.isNull()) {
			icon.save(tempIconFile, "PNG");
			TQString iconFileName = basket->icon().replace('/', '_');
			tar->addLocalFile(tempIconFile, "basket-icons/" + iconFileName);
		}
	}
	// Save basket backgorund image:
	TQString imageName = basket->backgroundImageName();
	if (!basket->backgroundImageName().isEmpty() && !backgrounds.contains(imageName)) {
		TQString backgroundPath = Global::backgroundManager->pathForImageName(imageName);
		if (!backgroundPath.isEmpty()) {
			// Save the background image:
			tar->addLocalFile(backgroundPath, "backgrounds/" + imageName);
			// Save the preview image:
			TQString previewPath = Global::backgroundManager->previewPathForImageName(imageName);
			if (!previewPath.isEmpty())
				tar->addLocalFile(previewPath, "backgrounds/previews/" + imageName);
			// Save the configuration file:
			TQString configPath = backgroundPath + ".config";
			if (dir.exists(configPath))
				tar->addLocalFile(configPath, "backgrounds/" + imageName + ".config");
		}
		backgrounds.append(imageName);
	}

	progress->advance(1); // Basket exportation finished
	std::cout << basket->basketName() << " finished" << std::endl;

	// Recursively save child baskets:
	BasketListViewItem *item = Global::bnpView->listViewItemForBasket(basket);
	if (recursive && item->firstChild()) {
		for (BasketListViewItem *child = (BasketListViewItem*) item->firstChild(); child; child = (BasketListViewItem*) child->nextSibling()) {
			saveBasketToArchive(child->basket(), recursive, tar, backgrounds, tempFolder, progress);
		}
	}
}

void Archive::listUsedTags(Basket *basket, bool recursive, TQValueList<Tag*> &list)
{
	basket->listUsedTags(list);
	BasketListViewItem *item = Global::bnpView->listViewItemForBasket(basket);
	if (recursive && item->firstChild()) {
		for (BasketListViewItem *child = (BasketListViewItem*) item->firstChild(); child; child = (BasketListViewItem*) child->nextSibling()) {
			listUsedTags(child->basket(), recursive, list);
		}
	}
}

void Archive::open(const TQString &path)
{
	// Create the temporar folder:
	TQString tempFolder = Global::savesFolder() + "temp-archive/";
	TQDir dir;
	dir.mkdir(tempFolder);
	const TQ_ULONG BUFFER_SIZE = 1024;

	TQFile file(path);
	if (file.open(IO_ReadOnly)) {
		TQTextStream stream(&file);
		stream.setEncoding(TQTextStream::Latin1);
		TQString line = stream.readLine();
		if (line != "BasKetNP:archive") {
			KMessageBox::error(0, i18n("This file is not a basket archive."), i18n("Basket Archive Error"));
			file.close();
			Tools::deleteRecursively(tempFolder);
			return;
		}
		TQString version;
		TQStringList readCompatibleVersions;
		TQStringList writeCompatibleVersions;
		while (!stream.atEnd()) {
			// Get Key/Value Pair From the Line to Read:
			line = stream.readLine();
			int index = line.find(':');
			TQString key;
			TQString value;
			if (index >= 0) {
				key = line.left(index);
				value = line.right(line.length() - index - 1);
			} else {
				key = line;
				value = "";
			}
			if (key == "version") {
				version = value;
			} else if (key == "read-compatible") {
				readCompatibleVersions = TQStringList::split(value, ";");
			} else if (key == "write-compatible") {
				writeCompatibleVersions = TQStringList::split(value, ";");
			} else if (key == "preview*") {
				bool ok;
				ulong size = value.toULong(&ok);
				if (!ok) {
					KMessageBox::error(0, i18n("This file is corrupted. It can not be opened."), i18n("Basket Archive Error"));
					file.close();
					Tools::deleteRecursively(tempFolder);
					return;
				}
				// Get the preview file:
//FIXME: We do not need the preview for now
//				TQFile previewFile(tempFolder + "preview.png");
//				if (previewFile.open(IO_WriteOnly)) {
					char *buffer = new char[BUFFER_SIZE];
					TQ_LONG sizeRead;
					while ((sizeRead = file.readBlock(buffer, TQMIN(BUFFER_SIZE, size))) > 0) {
//						previewFile.writeBlock(buffer, sizeRead);
						size -= sizeRead;
					}
//					previewFile.close();
					delete buffer;
//				}
			} else if (key == "archive*") {
				if (version != "0.6.1" && readCompatibleVersions.contains("0.6.1") && !writeCompatibleVersions.contains("0.6.1")) {
					KMessageBox::information(
						0,
						i18n("This file was created with a recent version of %1. "
						     "It can be opened but not every information will be available to you. "
						     "For instance, some notes may be missing because they are of a type only available in new versions. "
						     "When saving the file back, consider to save it to another file, to preserve the original one.")
							.arg(kapp->aboutData()->programName()),
						i18n("Basket Archive Error")
					);
				}
				if (version != "0.6.1" && !readCompatibleVersions.contains("0.6.1") && !writeCompatibleVersions.contains("0.6.1")) {
					KMessageBox::error(
						0,
						i18n("This file was created with a recent version of %1. Please upgrade to a newer version to be able to open that file.")
							.arg(kapp->aboutData()->programName()),
						i18n("Basket Archive Error")
					);
					file.close();
					Tools::deleteRecursively(tempFolder);
					return;
				}

				bool ok;
				ulong size = value.toULong(&ok);
				if (!ok) {
					KMessageBox::error(0, i18n("This file is corrupted. It can not be opened."), i18n("Basket Archive Error"));
					file.close();
					Tools::deleteRecursively(tempFolder);
					return;
				}

				Global::mainWindow()->raise();

				// Get the archive file:
				TQString tempArchive = tempFolder + "temp-archive.tar.gz";
				TQFile archiveFile(tempArchive);
				if (archiveFile.open(IO_WriteOnly)) {
					char *buffer = new char[BUFFER_SIZE];
					TQ_LONG sizeRead;
					while ((sizeRead = file.readBlock(buffer, TQMIN(BUFFER_SIZE, size))) > 0) {
						archiveFile.writeBlock(buffer, sizeRead);
						size -= sizeRead;
					}
					archiveFile.close();
					delete buffer;

					// Extract the Archive:
					TQString extractionFolder = tempFolder + "extraction/";
					TQDir dir;
					dir.mkdir(extractionFolder);
					KTar tar(tempArchive, "application/x-gzip");
					tar.open(IO_ReadOnly);
					tar.directory()->copyTo(extractionFolder);
					tar.close();

					// Import the Tags:
					importTagEmblems(extractionFolder); // Import and rename tag emblems BEFORE loading them!
					TQMap<TQString, TQString> mergedStates = Tag::loadTags(extractionFolder + "tags.xml");
					TQMap<TQString, TQString>::Iterator it;
					if (mergedStates.count() > 0) {
						Tag::saveTags();
					}

					// Import the Background Images:
					importArchivedBackgroundImages(extractionFolder);

					// Import the Baskets:
					renameBasketFolders(extractionFolder, mergedStates);

				}
			} else if (key.endsWith("*")) {
				// We do not know what it is, but we should read the embedded-file in order to discard it:
				bool ok;
				ulong size = value.toULong(&ok);
				if (!ok) {
					KMessageBox::error(0, i18n("This file is corrupted. It can not be opened."), i18n("Basket Archive Error"));
					file.close();
					Tools::deleteRecursively(tempFolder);
					return;
				}
				// Get the archive file:
				char *buffer = new char[BUFFER_SIZE];
				TQ_LONG sizeRead;
				while ((sizeRead = file.readBlock(buffer, TQMIN(BUFFER_SIZE, size))) > 0) {
					size -= sizeRead;
				}
				delete buffer;
			} else {
				// We do not know what it is, and we do not care.
			}
			// Analyse the Value, if Understood:
		}
		file.close();
	}
	Tools::deleteRecursively(tempFolder);
}

/**
 * When opening a basket archive that come from another computer,
 * it can contains tags that use icons (emblems) that are not present on that computer.
 * Fortunately, basket archives contains a copy of every used icons.
 * This method check for every emblems and import the missing ones.
 * It also modify the tags.xml copy for the emblems to point to the absolute path of the impported icons.
 */
void Archive::importTagEmblems(const TQString &extractionFolder)
{
	TQDomDocument *document = XMLWork::openFile("basketTags", extractionFolder + "tags.xml");
	if (document == 0)
		return;
	TQDomElement docElem = document->documentElement();

	TQDir dir;
	dir.mkdir(Global::savesFolder() + "tag-emblems/");
	FormatImporter copier; // Only used to copy files synchronously

	TQDomNode node = docElem.firstChild();
	while (!node.isNull()) {
		TQDomElement element = node.toElement();
		if ( (!element.isNull()) && element.tagName() == "tag" ) {
			TQDomNode subNode = element.firstChild();
			while (!subNode.isNull()) {
				TQDomElement subElement = subNode.toElement();
				if ( (!subElement.isNull()) && subElement.tagName() == "state" ) {
					TQString emblemName = XMLWork::getElementText(subElement, "emblem");
					if (!emblemName.isEmpty()) {
						TQPixmap emblem = kapp->iconLoader()->loadIcon(emblemName, TDEIcon::NoGroup, 16, TDEIcon::DefaultState, 0L, /*canReturnNull=*/true);
						// The icon does not exists on that computer, import it:
						if (emblem.isNull()) {
							// Of the emblem path was eg. "/home/seb/emblem.png", it was exported as "tag-emblems/_home_seb_emblem.png".
							// So we need to copy that image to "~/.trinity/share/apps/basket/tag-emblems/emblem.png":
							int slashIndex = emblemName.findRev("/");
							TQString emblemFileName = (slashIndex < 0 ? emblemName : emblemName.right(slashIndex - 2));
							TQString source      = extractionFolder + "tag-emblems/" + emblemName.replace('/', '_');
							TQString destination = Global::savesFolder() + "tag-emblems/" + emblemFileName;
							if (!dir.exists(destination))
								copier.copyFolder(source, destination);
							// Replace the emblem path in the tags.xml copy:
							TQDomElement emblemElement = XMLWork::getElement(subElement, "emblem");
							subElement.removeChild(emblemElement);
							XMLWork::addElement(*document, subElement, "emblem", destination);
						}
					}
				}
				subNode = subNode.nextSibling();
			}
		}
		node = node.nextSibling();
	}
	Basket::safelySaveToFile(extractionFolder + "tags.xml", document->toString());
}

void Archive::importArchivedBackgroundImages(const TQString &extractionFolder)
{
	FormatImporter copier; // Only used to copy files synchronously
	TQString destFolder = TDEGlobal::dirs()->saveLocation("data", "basket/backgrounds/");

	TQDir dir(extractionFolder + "backgrounds/", /*nameFilder=*/"*.png", /*sortSpec=*/TQDir::Name | TQDir::IgnoreCase, /*filterSpec=*/TQDir::Files | TQDir::NoSymLinks);
	TQStringList files = dir.entryList();
	for (TQStringList::Iterator it = files.begin(); it != files.end(); ++it) {
		TQString image = *it;
		if (!Global::backgroundManager->exists(image)) {
			// Copy images:
			TQString imageSource = extractionFolder + "backgrounds/" + image;
			TQString imageDest   = destFolder + image;
			copier.copyFolder(imageSource, imageDest);
			// Copy configuration file:
			TQString configSource = extractionFolder + "backgrounds/" + image + ".config";
			TQString configDest   = destFolder + image;
			if (dir.exists(configSource))
				copier.copyFolder(configSource, configDest);
			// Copy preview:
			TQString previewSource = extractionFolder + "backgrounds/previews/" + image;
			TQString previewDest   = destFolder + "previews/" + image;
			if (dir.exists(previewSource)) {
				dir.mkdir(destFolder + "previews/"); // Make sure the folder exists!
				copier.copyFolder(previewSource, previewDest);
			}
			// Append image to database:
			Global::backgroundManager->addImage(imageDest);
		}
	}
}

void Archive::renameBasketFolders(const TQString &extractionFolder, TQMap<TQString, TQString> &mergedStates)
{
	TQDomDocument *doc = XMLWork::openFile("basketTree", extractionFolder + "baskets/baskets.xml");
	if (doc != 0) {
		TQMap<TQString, TQString> folderMap;
		TQDomElement docElem = doc->documentElement();
		TQDomNode node = docElem.firstChild();
		renameBasketFolder(extractionFolder, node, folderMap, mergedStates);
		loadExtractedBaskets(extractionFolder, node, folderMap, 0);
	}
}

void Archive::renameBasketFolder(const TQString &extractionFolder, TQDomNode &basketNode, TQMap<TQString, TQString> &folderMap, TQMap<TQString, TQString> &mergedStates)
{
	TQDomNode n = basketNode;
	while ( ! n.isNull() ) {
		TQDomElement element = n.toElement();
		if ( (!element.isNull()) && element.tagName() == "basket" ) {
			TQString folderName = element.attribute("folderName");
			if (!folderName.isEmpty()) {
				// Find a folder name:
				TQString newFolderName = BasketFactory::newFolderName();
				folderMap[folderName] = newFolderName;
				// Reserve the folder name:
				TQDir dir;
				dir.mkdir(Global::basketsFolder() + newFolderName);
				// Rename the merged tag ids:
//				if (mergedStates.count() > 0) {
					renameMergedStatesAndBasketIcon(extractionFolder + "baskets/" + folderName + ".basket", mergedStates, extractionFolder);
//				}
				// Child baskets:
				TQDomNode node = element.firstChild();
				renameBasketFolder(extractionFolder, node, folderMap, mergedStates);
			}
		}
		n = n.nextSibling();
	}
}

void Archive::renameMergedStatesAndBasketIcon(const TQString &fullPath, TQMap<TQString, TQString> &mergedStates, const TQString &extractionFolder)
{
	TQDomDocument *doc = XMLWork::openFile("basket", fullPath);
	if (doc == 0)
		return;
	TQDomElement docElem = doc->documentElement();
	TQDomElement properties = XMLWork::getElement(docElem, "properties");
	importBasketIcon(properties, extractionFolder);
	TQDomElement notes = XMLWork::getElement(docElem, "notes");
	if (mergedStates.count() > 0)
		renameMergedStates(notes, mergedStates);
	Basket::safelySaveToFile(fullPath, /*"<?xml version=\"1.0\" encoding=\"UTF-8\" ?>\n" + */doc->toString());
}

void Archive::importBasketIcon(TQDomElement properties, const TQString &extractionFolder)
{
	TQString iconName = XMLWork::getElementText(properties, "icon");
	if (!iconName.isEmpty() && iconName != "basket") {
		TQPixmap icon = kapp->iconLoader()->loadIcon(iconName, TDEIcon::NoGroup, 16, TDEIcon::DefaultState, 0L, /*canReturnNull=*/true);
		// The icon does not exists on that computer, import it:
		if (icon.isNull()) {
			TQDir dir;
			dir.mkdir(Global::savesFolder() + "basket-icons/");
			FormatImporter copier; // Only used to copy files synchronously
			// Of the icon path was eg. "/home/seb/icon.png", it was exported as "basket-icons/_home_seb_icon.png".
			// So we need to copy that image to "~/.trinity/share/apps/basket/basket-icons/icon.png":
			int slashIndex = iconName.findRev("/");
			TQString iconFileName = (slashIndex < 0 ? iconName : iconName.right(slashIndex - 2));
			TQString source       = extractionFolder + "basket-icons/" + iconName.replace('/', '_');
			TQString destination = Global::savesFolder() + "basket-icons/" + iconFileName;
			if (!dir.exists(destination))
				copier.copyFolder(source, destination);
			// Replace the emblem path in the tags.xml copy:
			TQDomElement iconElement = XMLWork::getElement(properties, "icon");
			properties.removeChild(iconElement);
			TQDomDocument document = properties.ownerDocument();
			XMLWork::addElement(document, properties, "icon", destination);
		}
	}
}

void Archive::renameMergedStates(TQDomNode notes, TQMap<TQString, TQString> &mergedStates)
{
	TQDomNode n = notes.firstChild();
	while ( ! n.isNull() ) {
		TQDomElement element = n.toElement();
		if (!element.isNull()) {
			if (element.tagName() == "group" ) {
				renameMergedStates(n, mergedStates);
			} else if (element.tagName() == "note") {
				TQString tags = XMLWork::getElementText(element, "tags");
				if (!tags.isEmpty()) {
					TQStringList tagNames = TQStringList::split(";", tags);
					for (TQStringList::Iterator it = tagNames.begin(); it != tagNames.end(); ++it) {
						TQString &tag = *it;
						if (mergedStates.contains(tag)) {
							tag = mergedStates[tag];
						}
					}
					TQString newTags = tagNames.join(";");
					TQDomElement tagsElement = XMLWork::getElement(element, "tags");
					element.removeChild(tagsElement);
					TQDomDocument document = element.ownerDocument();
					XMLWork::addElement(document, element, "tags", newTags);
				}
			}
		}
		n = n.nextSibling();
	}
}

void Archive::loadExtractedBaskets(const TQString &extractionFolder, TQDomNode &basketNode, TQMap<TQString, TQString> &folderMap, Basket *parent)
{
	bool basketSetAsCurrent = (parent != 0);
	TQDomNode n = basketNode;
	while ( ! n.isNull() ) {
		TQDomElement element = n.toElement();
		if ( (!element.isNull()) && element.tagName() == "basket" ) {
			TQString folderName = element.attribute("folderName");
			if (!folderName.isEmpty()) {
				// Move the basket folder to its destination, while renaming it uniquely:
				TQString newFolderName = folderMap[folderName];
				FormatImporter copier;
				// The folder has been "reserved" by creating it. Avoid asking the user to override:
				TQDir dir;
				dir.rmdir(Global::basketsFolder() + newFolderName);
				copier.moveFolder(extractionFolder + "baskets/" + folderName, Global::basketsFolder() + newFolderName);
				// Append and load the basket in the tree:
				Basket *basket = Global::bnpView->loadBasket(newFolderName);
				BasketListViewItem *basketItem = Global::bnpView->appendBasket(basket, (basket && parent ? Global::bnpView->listViewItemForBasket(parent) : 0));
				basketItem->setOpen(!XMLWork::trueOrFalse(element.attribute("folded", "false"), false));
				TQDomElement properties = XMLWork::getElement(element, "properties");
				importBasketIcon(properties, extractionFolder); // Rename the icon fileName if necessary
				basket->loadProperties(properties);
				// Open the first basket of the archive:
				if (!basketSetAsCurrent) {
					Global::bnpView->setCurrentBasket(basket);
					basketSetAsCurrent = true;
				}
				TQDomNode node = element.firstChild();
				loadExtractedBaskets(extractionFolder, node, folderMap, basket);
			}
		}
		n = n.nextSibling();
	}
}