1 files changed, 435 insertions, 0 deletions
diff --git a/noatun-plugins/oblique/base.cpp b/noatun-plugins/oblique/base.cpp
new file mode 100644
index 0000000..60bb272
--- /dev/null
+++ b/noatun-plugins/oblique/base.cpp
@@ -0,0 +1,435 @@
+// Copyright (c) 2003 Charles Samuels <charles@kde.org>
+// See the file COPYING for redistribution terms.
+
+#include "base.h"
+#include "file.h"
+
+#include "kdbt.h"
+#include "kbuffer.h"
+
+#include <qstringlist.h>
+#include <qmap.h>
+#include <qfile.h>
+#include <qdom.h>
+
+#include <cstdlib>
+#include <assert.h>
+#include <db_cxx.h>
+
+
+
+struct Base::Private
+{
+	Private() : db(0, DB_CXX_NO_EXCEPTIONS) { }
+	Db db;
+	typedef KDbt<FileId> Key;
+	typedef KDbt<QStringList> Data;
+
+	FileId high;
+
+	FileId cachedId;
+	mutable QMap<QString,QString> cachedProperties;
+
+	QPtrList<Slice> slices;
+	int sliceHigh;
+};
+
+
+Base::Base(const QString &file)
+{
+	d = new Private;
+	d->cachedId = 0;
+
+	QCString filename = QFile::encodeName(file);
+
+	bool create = true;
+	if (d->db.open(
+#if DB_VERSION_MINOR > 0 && DB_VERSION_MAJOR >= 4
+			NULL,
+#endif
+			filename,
+			0, DB_BTREE, DB_NOMMAP, 0
+		)==0)
+	{ // success
+		Private::Data data;
+		Private::Key key(0);
+		if (d->db.get(0, &key, &data, 0)==0)
+		{
+			QStringList strs;
+			data.get(strs);
+
+			mFormatVersion = strs[0].toUInt(0, 16); // TODO
+			d->high = strs[1].toUInt();
+
+			if (strs.count() == 3)
+				loadMetaXML(strs[2]);
+			else
+				loadMetaXML("");
+
+			create=false;
+		}
+	}
+	if (create)
+	{ // failure
+		QFile(filename).remove();
+		d->db.open(
+#if DB_VERSION_MINOR > 0 && DB_VERSION_MAJOR >= 4
+				NULL,
+#endif
+				filename,0, DB_BTREE, DB_NOMMAP|DB_CREATE,0
+			);
+
+		d->high=0;
+		QStringList strs;
+		strs << "00010002" << "0" << "";
+		resetFormatVersion();
+		loadMetaXML("");
+		Private::Data data(strs);
+		Private::Key key(0);
+		// in the stringlist for Key(0), we have the following list:
+		// { "version of the file",
+		//   "the high extreme (auto-increment counter in SQL terminology)",
+		//   "the metaxml"
+		// }
+		d->db.put(0, &key, &data, 0);
+	}
+}
+
+void Base::resetFormatVersion()
+{
+	mFormatVersion = 0x00010002;
+}
+
+Base::~Base()
+{
+	QStringList strs;
+	strs << QString::number(mFormatVersion, 16) << QString::number(d->high);
+	strs << saveMetaXML();
+
+	Private::Data data(strs);
+	Private::Key key(0);
+	d->db.put(0, &key, &data, 0);
+	d->db.sync(0);
+	d->db.close(0);
+	delete d;
+}
+
+File Base::add(const QString &file)
+{
+	Private::Key key(++d->high);
+	QStringList properties;
+	properties << "file" << file;
+	Private::Data data(properties);
+
+	unless (d->db.put(0, &key, &data, 0))
+	{
+		// success !
+		File f(this, d->high);
+		f.makeCache();
+		emit added(f);
+		return f;
+	}
+
+	return File();
+}
+
+File Base::find(FileId id)
+{
+	if (id == 0) return File();
+
+	Private::Key key(id);
+	Private::Data data;
+
+	unless (d->db.get(0, &key, &data, 0))
+	{
+		// exists
+		return File(this, id);
+	}
+	else
+	{
+		return File(); // null item
+	}
+}
+
+void Base::clear()
+{
+	for (FileId id = high(); id >= 1; id--)
+	{
+		File f = find(id);
+		if (f)
+			f.remove();
+	}
+}
+
+
+FileId Base::high() const
+{
+	return d->high;
+}
+
+File Base::first(FileId first)
+{
+	if (first > high()) return File();
+
+	while (!find(first))
+	{
+		++first;
+		if (first > high())
+			return File();
+	}
+	return File(this, first);
+}
+
+QString Base::property(FileId id, const QString &property) const
+{
+	loadIntoCache(id);
+	if (!d->cachedProperties.contains(property)) return QString::null;
+	QMap<QString,QString>::Iterator i = d->cachedProperties.find(property);
+	return i.data();
+}
+
+void Base::setProperty(FileId id, const QString &key, const QString &value)
+{
+	loadIntoCache(id);
+	d->cachedProperties.insert(key, value);
+	// reinsert it into the DB
+
+	QStringList props;
+	for (
+			QMap<QString,QString>::Iterator i(d->cachedProperties.begin());
+			i != d->cachedProperties.end(); ++i
+		)
+	{
+		props << i.key() << i.data();
+	}
+
+	Private::Data data(props);
+	Private::Key dbkey(id);
+	d->db.put(0, &dbkey, &data, 0);
+	d->db.sync(0);
+
+	emit modified(File(this, id));
+}
+
+QStringList Base::properties(FileId id) const
+{
+	loadIntoCache(id);
+	QStringList props;
+	for (
+			QMap<QString,QString>::Iterator i(d->cachedProperties.begin());
+			i != d->cachedProperties.end(); ++i
+		)
+	{
+		props << i.key();
+	}
+	return props;
+}
+
+void Base::clearProperty(FileId id, const QString &key)
+{
+	loadIntoCache(id);
+	d->cachedProperties.remove(key);
+	// reinsert it into the DB
+
+	QStringList props;
+	for (
+			QMap<QString,QString>::Iterator i(d->cachedProperties.begin());
+			i != d->cachedProperties.end(); ++i
+		)
+	{
+		if (i.key() != key)
+			props << i.key() << i.data();
+	}
+
+	Private::Data data(props);
+	Private::Key dbkey(id);
+	d->db.put(0, &dbkey, &data, 0);
+	d->db.sync(0);
+
+	emit modified(File(this, id));
+}
+
+void Base::remove(File file)
+{
+	Private::Key key(file.id());
+
+	unless (d->db.del(0, &key, 0))
+	{
+		emit removed(file);
+		if (file.id() == d->high)
+		{
+			d->high--;  // optimization
+		}
+	}
+	d->db.sync(0);
+}
+
+void Base::loadIntoCache(FileId id) const
+{
+	if (d->cachedId == id) return;
+
+	d->cachedId = id;
+	d->cachedProperties.clear();
+
+	Private::Key key(id);
+	Private::Data data;
+	unless (d->db.get(0, &key, &data, 0))
+	{
+		QStringList props;
+		data.get(props);
+
+		if (props.count() % 2)
+		{ // corrupt?
+			const_cast<Base*>(this)->remove(File(const_cast<Base*>(this), id));
+			return;
+		}
+
+		for (QStringList::Iterator i(props.begin()); i != props.end(); ++i)
+		{
+			QString &key = *i;
+			QString &value = *++i;
+			d->cachedProperties.insert(key, value);
+		}
+	}
+}
+
+QString Base::saveMetaXML()
+{
+	QDomDocument doc;
+	doc.setContent(QString("<meta />"));
+	QDomElement doce = doc.documentElement();
+
+	QDomElement e = doc.createElement("slices");
+	e.setAttribute("highslice", QString::number(d->sliceHigh));
+	doce.appendChild(e);
+
+	for (QPtrListIterator<Slice> i(d->slices); *i; ++i)
+	{
+		QDomElement slice = doc.createElement("slice");
+		slice.setAttribute("id", (*i)->id());
+		slice.setAttribute("name", (*i)->name());
+		e.appendChild(slice);
+	}
+	return doc.toString();
+}
+
+void Base::move(FileId oldid, FileId newid)
+{
+	Private::Key key(oldid);
+	Private::Data data;
+	unless (d->db.get(0, &key, &data, 0))
+	{
+		QStringList props;
+		data.get(props);
+		d->db.del(0, &key, 0);
+
+		Private::Key key2(newid);
+		d->db.put(0, &key2, &data, 0);
+	}
+}
+
+void Base::dump()
+{
+	for (FileId id=1; id <= high(); id++)
+	{
+		QStringList props = properties(id);
+		std::cerr << id << '.';
+		for (QStringList::Iterator i(props.begin()); i != props.end(); ++i)
+		{
+			QString prop = *i;
+			std::cerr << ' ' << prop.latin1() << '=' << property(id, prop).latin1();
+		}
+		std::cerr << std::endl;
+	}
+}
+
+void Base::notifyChanged(const File &file)
+{
+	emit modified(file);
+}
+
+
+QPtrList<Slice> Base::slices()
+{
+	return d->slices;
+}
+
+Slice *Base::addSlice(const QString &name)
+{
+	Slice *sl = new Slice(this, d->sliceHigh++, name);
+	d->slices.append(sl);
+	slicesModified();
+	return sl;
+}
+
+Slice *Base::defaultSlice()
+{
+	for (QPtrListIterator<Slice> i(d->slices); *i; ++i)
+	{
+		if ((*i)->id() == 0) return *i;
+	}
+
+	abort();
+	return 0;
+}
+
+void Base::removeSlice(Slice *slice)
+{
+	assert(slice->id() > 0);
+	d->slices.removeRef(slice);
+	delete slice;
+}
+
+Slice *Base::sliceById(int id)
+{
+	for (QPtrListIterator<Slice> i(d->slices); *i; ++i)
+	{
+		if ((*i)->id() == id) return *i;
+	}
+	return 0;
+}
+
+
+void Base::loadMetaXML(const QString &xml)
+{
+	d->slices.setAutoDelete(true);
+	d->slices.clear();
+	d->slices.setAutoDelete(false);
+
+	QDomDocument doc;
+	doc.setContent(xml);
+	QDomElement doce = doc.documentElement();
+	bool loadedId0=false;
+
+	for (QDomNode n = doce.firstChild(); !n.isNull(); n = n.nextSibling())
+	{
+		QDomElement e = n.toElement();
+		if (e.isNull()) continue;
+
+		if (e.tagName().lower() == "slices")
+		{
+			d->sliceHigh = e.attribute("highslice", "1").toInt();
+			for (QDomNode n = e.firstChild(); !n.isNull(); n = n.nextSibling())
+			{
+				QDomElement e = n.toElement();
+				if (e.isNull()) continue;
+				if (e.tagName().lower() == "slice")
+				{
+					int id = e.attribute("id").toInt();
+					if (id==0 && loadedId0) break;
+					loadedId0=true;
+					QString name = e.attribute("name");
+					d->slices.append(new Slice(this, id, name));
+				}
+			}
+		}
+	}
+
+	if (d->slices.count() == 0)
+	{
+		// we must have a default
+		d->slices.append(new Slice(this, 0, ""));
+	}
+}
+
+#include "base.moc"