From 7213ca723a65dff8ebb0c6c08669695217e60453 Mon Sep 17 00:00:00 2001
From: Treeki <treeki@gmail.com>
Date: Sat, 9 Oct 2010 01:00:16 +0200
Subject: material bugfixes, plus the beginning of U8 archive code, and a nice
 little API for handling archive filesystems

---
 wii/common.cpp | 110 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 110 insertions(+)
 create mode 100644 wii/common.cpp

(limited to 'wii/common.cpp')

diff --git a/wii/common.cpp b/wii/common.cpp
new file mode 100644
index 0000000..f4a961c
--- /dev/null
+++ b/wii/common.cpp
@@ -0,0 +1,110 @@
+/*******************************************************************************
+  This file is part of LayoutStudio (http://github.com/Treeki/LayoutStudio)
+  Copyright (c) 2010 Treeki (treeki@gmail.com)
+
+  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, version 2.0.
+
+  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 2.0 for more details.
+
+  You should have received a copy of the GNU General Public License 2.0
+  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*******************************************************************************/
+
+#include "common.h"
+
+QByteArray PadByteArray(QByteArray original, int newLength, char padWith) {
+	QByteArray newArray = original;
+
+	if (original.length() > newLength) {
+		// the original array is longer than the length desired, so truncate it
+		newArray.truncate(newLength);
+
+	} else if (original.length() < newLength) {
+		// the original array is shorter, so pad it
+		int oldLength = original.length();
+		newArray.resize(newLength);
+
+		for (int i = oldLength; i < newLength; i++) {
+			newArray[i] = '\0';
+		}
+	}
+
+	return newArray;
+}
+
+QStringList ReadStringList(QDataStream &in) {
+	QStringList output;
+
+	quint16 count;
+	in >> (quint16&)count;
+	in.skipRawData(2); // padding
+
+	QVector<quint32> stringOffsets(count);
+
+	// save the initial offset so we can get the strings later
+	// string offsets are based on the first offset entry (after the count)
+	// NOT on the section offset
+	qint64 savedPos = in.device()->pos();
+
+	for (int i = 0; i < count; i++) {
+		quint32 offset;
+		in >> (quint32&)offset;
+		in.skipRawData(4); // unused?
+
+		stringOffsets[i] = offset;
+	}
+
+	// ok, now we can get the strings
+	for (int i = 0; i < count; i++) {
+		in.device()->seek(savedPos + stringOffsets[i]);
+
+		// how fun: no length is stored for each string, they're just zero
+		// terminated. so let's try to figure it out!
+		int stringLength = 0;
+		char check;
+
+		in >> (quint8&)check;
+		while (check != 0) {
+			stringLength += 1;
+			in >> (quint8&)check;
+		}
+
+		// now read the string
+		char *buffer = new char[stringLength];
+
+		in.device()->seek(savedPos + stringOffsets[i]);
+		in.readRawData(buffer, stringLength);
+
+		output.append(QString::fromAscii(buffer, stringLength));
+
+		delete[] buffer;
+
+
+		qDebug() << "Read string:" << output.last();
+	}
+
+	return output;
+}
+
+QString ReadFixedLengthASCII(QDataStream &in, int length) {
+	QByteArray readStr(length, '\0');
+	in.readRawData(readStr.data(), readStr.length());
+
+	QString str = QString::fromAscii(readStr.data(), readStr.length());
+	if (str.contains(QChar('\0')))
+		str.truncate(str.indexOf(QChar('\0')));
+
+	return str;
+}
+
+void WriteFixedLengthASCII(QDataStream &out, QString str, int length) {
+	QByteArray paddedStr = PadByteArray(str.toAscii(), length);
+	out.writeRawData(paddedStr.constData(), paddedStr.length());
+}
+
+
-- 
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