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
2010-02-09 22:52:04 +01:00 · 2010-02-09 22:52:04 +01:00 · 2aabed9491
commit 2aabed9491
parent ff721650c0
8 changed files with 497 additions and 7 deletions
--- a/dir_iterator/archive_read_open_qiodevice.cpp
+++ b/dir_iterator/archive_read_open_qiodevice.cpp
@ -0,0 +1,148 @@
+/*-
+ * Copyright (C) 2010 Thomas Frauendorfer
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// On Debian, libarchive is compiled with 64bit off_t, but nothing in the
+// libarchive headers tells so. In other words: Debian sucks.
+#define _LARGEFILE_SOURCE 1
+#define _FILE_OFFSET_BITS 64
+
+#include <archive.h>
+#include <QIODevice>
+
+#include <QtDebug>
+
+#if (ARCHIVE_API_VERSION < 2)
+typedef __LA_SSIZE_T archive_skip_t;
+#elif (ARCHIVE_API_VERSION < 3)
+typedef off_t archive_skip_t;
+#else
+typedef __LA_INT64_T archive_skip_t;
+#endif
+
+static const int READ_MAX = 4096;
+
+struct read_qiodevice_data {
+	QIODevice *device;
+	char buffer[READ_MAX];
+};
+
+static int qiodevice_read_close(struct archive *, void *);
+static archive_skip_t qiodevice_read_skip(struct archive *, void *, archive_skip_t);
+static __LA_SSIZE_T qiodevice_read(struct archive *, void *, const void **);
+
+int
+archive_read_open_qiodevice(struct archive *a, QIODevice *device)
+{
+	if (device == 0) {
+		qDebug () << "archive_read_open_qiodevice";
+		archive_set_error(a, -1, "Invalid QIODevice");
+		return ARCHIVE_FATAL;
+	}
+
+	if (!device->isOpen() && !device->open(QIODevice::ReadOnly)) {
+		qDebug () << "archive_read_open_qiodevice";
+		archive_set_error(a, -1, "Could not open QIODevice for reading");
+		return ARCHIVE_FATAL;
+	}
+
+	if (!device->isReadable()) {
+		qDebug () << "archive_read_open_qiodevice";
+		archive_set_error(a, -1, "Could not open QIODevice for reading");
+		return ARCHIVE_FATAL;
+	}
+
+	struct read_qiodevice_data *data = new read_qiodevice_data;
+	if (data == 0) {
+		qDebug () << "archive_read_open_qiodevice";
+		archive_set_error(a, -1, "No Memory");
+		return ARCHIVE_FATAL;
+	}
+	data->device = device;
+
+	device->reset(); // Seek to begining of file
+	device->setTextModeEnabled(false); // Binary mode
+
+	return (archive_read_open2(a, data, NULL, qiodevice_read,
+	        qiodevice_read_skip, qiodevice_read_close));
+}
+
+static int
+qiodevice_read_close(struct archive *a, void *v)
+{
+	const struct read_qiodevice_data *data = static_cast<read_qiodevice_data *>(v);
+
+	(void)a;
+	if (data != 0) {
+		delete data;
+	}
+
+	return ARCHIVE_OK;
+}
+
+static archive_skip_t
+qiodevice_read_skip(struct archive *a, void *v, archive_skip_t _request)
+{
+	const struct read_qiodevice_data *data = static_cast<read_qiodevice_data *>(v);
+
+	(void)a; /* unused */
+	const qint64 request = _request; // make sure we work with 64bit values
+
+
+	if (data->device->isSequential()) {
+		return 0;
+	}
+	if (request == 0) {
+		return 0;
+	}
+
+	const qint64 oldpos = data->device->pos();
+	if (data->device->seek(oldpos + request)) {
+		return request;
+	}
+
+	// Seek might have failed because we tried to seek beyond the end of a file
+	qDebug("Seek failed, seeked: %lli", data->device->pos() - oldpos);
+
+	return data->device->pos() - oldpos;
+}
+
+static __LA_SSIZE_T
+qiodevice_read(struct archive *a, void *v, const void **buf)
+{
+	struct read_qiodevice_data *data = static_cast<read_qiodevice_data *>(v);
+
+	(void)a;
+
+	*buf = data->buffer;
+	qint64 bytes_read = data->device->read(data->buffer, READ_MAX);
+
+	if (bytes_read < 0) {
+		archive_set_error(a, 1, "Error reading from QIODevice");
+	}
+
+	return bytes_read;
+}
+
+