From b7a8b597b00eedde277836eb8530ba742edcad5d Mon Sep 17 00:00:00 2001
From: Treeki <treeki@gmail.com>
Date: Wed, 25 Dec 2013 09:00:59 +0100
Subject: commit initial bits

---
 server/packetreader.cpp | 53 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100644 server/packetreader.cpp

(limited to 'server/packetreader.cpp')

diff --git a/server/packetreader.cpp b/server/packetreader.cpp
new file mode 100644
index 0000000..c28bcba
--- /dev/null
+++ b/server/packetreader.cpp
@@ -0,0 +1,53 @@
+#include "packetreader.h"
+
+PacketReader::PacketReader(const QByteArray &buffer) {
+	m_pointer = (const quint8 *)buffer.constData();
+	m_end = m_pointer + buffer.size();
+}
+
+PacketReader::PacketReader(const quint8 *data, int size) {
+	m_pointer = data;
+	m_end = m_pointer + size;
+}
+
+
+quint32 PacketReader::readU32() {
+	if ((m_pointer + 4) > m_end)
+		return 0;
+
+	quint32 value =
+			m_pointer[0] |
+			(m_pointer[1] << 8) |
+			(m_pointer[2] << 16) |
+			(m_pointer[3] << 24);
+
+	m_pointer += 4;
+	return value;
+}
+
+bool PacketReader::readBytes(quint8 *output, int size) {
+	if ((m_pointer + size) > m_end)
+		return false;
+
+	memcpy(output, m_pointer, size);
+	m_pointer += size;
+
+	return true;
+}
+
+QString PacketReader::readString(int maxSize) {
+	quint32 size = readU32() & ~1;
+
+	if ((m_pointer + size) > m_end)
+		return QString::null;
+	if ((size / 2) > maxSize) {
+		m_pointer += size;
+		return QString::null;
+	}
+
+	QString retVal(size / 2, QChar());
+	memcpy(retVal.data(), m_pointer, size);
+	m_pointer += size;
+
+	return retVal;
+}
-- 
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