OTHER: read support for zipped skins

For now, zipped skins don't show up in the selection dialog yet
But they are loaded when set in the config file

dir_iterator/archiveiterator.cpp

@@ -0,0 +1,167 @@
+/**
+ *  This file is a part of Promoe, an XMMS2 Client.
+ *
+ *  Copyright (C) 2010 XMMS2 Team
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2.1 of the License, or (at your option) any later version.
+ *
+ *  This library 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
+ *  Lesser General Public License for more details.
+ */
+
+#include "archiveiterator.h"
+#include "archivereaddevice.h"
+
+#include "promoe_config.h"
+#if HAVE_LIBARCHIVE
+#include "archive.h"
+#include "archive_entry.h"
+#endif
+
+#include <QtDebug>
+
+int archive_read_open_qiodevice(struct archive *a, QIODevice *device);
+
+ArchiveIterator::ArchiveIterator (const QString &path) : QObject (),
+	DirIteratorBase (), m_current(NULL)
+{
+	m_dev = new QFile (path);
+	m_valid = finish_init (m_dev);
+}
+
+ArchiveIterator::ArchiveIterator (QIODevice *d) : QObject (),
+	DirIteratorBase (), m_current(NULL), m_dev (NULL)
+{
+	m_valid = finish_init (d);
+}
+
+bool
+ArchiveIterator::finish_init (QIODevice *d)
+{
+	m_archive_entry = NULL;
+	m_archive = NULL;
+	m_atEnd = false;
+
+#if HAVE_LIBARCHIVE
+	m_archive = archive_read_new ();
+	if (m_archive == 0) {
+		qDebug () << "archive_read_new failed";
+		return false;
+	}
+
+	if (archive_read_support_compression_all (m_archive) != ARCHIVE_OK) {
+		qDebug () << "archive_read_support_compression_all failed";
+		return false;
+	}
+	if (archive_read_support_format_all (m_archive) != ARCHIVE_OK) {
+		qDebug () << "archive_read_support_format_all failed";
+		return false;
+	}
+	if (archive_read_open_qiodevice (m_archive, d) != ARCHIVE_OK) {
+		qDebug () << "archive_read_open_qiodevice failed";
+		return false;
+	}
+
+	return true;
+#else
+	return false;
+#endif
+}
+
+ArchiveIterator::~ArchiveIterator ()
+{
+#if HAVE_LIBARCHIVE
+	if (m_archive != 0) {
+		archive_read_finish (m_archive);
+		m_archive = 0;
+	}
+#endif
+
+	if (m_dev != 0) {
+		delete m_dev;
+		m_dev = 0;
+	}
+}
+
+/*
+ *  DirIteratorBase methods
+ */
+
+QString
+ArchiveIterator::next ()
+{
+#if HAVE_LIBARCHIVE
+	if (!m_valid || m_atEnd) {
+		return QString ();
+	}
+	if (m_current != 0) {
+		m_current->close ();
+		m_current->deleteLater ();
+	}
+	if (archive_read_next_header (m_archive, &m_archive_entry) != ARCHIVE_OK) {
+		m_atEnd = true;
+		return QString ();
+	}
+	QString s(archive_entry_pathname (m_archive_entry));
+	m_current = new ArchiveReadDevice (this, s);
+	return s;
+#else
+	return QString ();
+#endif
+}
+
+QString
+ArchiveIterator::pathName ()
+{
+#if HAVE_LIBARCHIVE
+	if (!m_valid || m_atEnd) {
+		return QString ();
+	}
+	QString s(archive_entry_pathname (m_archive_entry));
+	return s;
+#else
+	return QString ();
+#endif
+}
+
+bool
+ArchiveIterator::hasNext ()
+{
+#if HAVE_LIBARCHIVE
+	return !m_atEnd; // workaround, as there is no has_next method in libarchive
+#else
+	return false;
+#endif
+}
+
+QPointer<QIODevice>
+ArchiveIterator::entry ()
+{
+#if HAVE_LIBARCHIVE
+	return m_current;
+#else
+	return NULL;
+#endif
+}
+
+qint64
+ArchiveIterator::readData(char *data, qint64 size)
+{
+#if HAVE_LIBARCHIVE
+	if (!m_valid || m_atEnd) {
+		qDebug () << "gnarf";
+		return -1;
+	}
+	qint64 ret = archive_read_data (m_archive, data, size);
+	return ret;
+#else
+	return -1;
+#endif
+}
+
+#include "archiveiterator.moc"