work in progress...

main.cpp

@@ -0,0 +1,17 @@
+#include <QCoreApplication>
+#include <msgpack.h>
+#include <QDebug>
+
+void test(quint8 *p) {
+    p++;
+}
+
+int main(int argc, char *argv[])
+{
+    QCoreApplication a(argc, argv);
+
+    qDebug() << "MsgPack";
+    qDebug() << MsgPack::deserialize(QByteArray::fromHex("fffeece1e0"));
+
+    return a.exec();
+}

msgpack.cpp

@@ -0,0 +1,29 @@
+#include "msgpack.h"
+#include <QDebug>
+
+QVariantList MsgPack::deserialize(const QByteArray &data)
+{
+    QVariantList d;
+    int i = 0;
+
+    quint8 *p = (quint8 *)data.data();
+    while (i < data.size()) {
+        if (p[i] <= 127) { // positive fixint 0x00 - 0x7f
+            quint32 val = (quint32)p[i];
+            d.append(QVariant(val));
+            i += 1;
+        }
+        if (p[i] >= 0xe0) { // negative fixint 0xe0 - 0xff
+            quint8 val8 = (quint8)p[i];
+            val8 &= ~((1 << 7) | (1 << 6) | (1 << 5));
+            qint32 val = 31 - val8;
+            val ^= 0xffffffff;
+            d.append(QVariant((qint32)val));
+            i += 1;
+        }
+
+
+    }
+
+    return d;
+}

msgpack.h

@@ -0,0 +1,12 @@
+#ifndef MSGPACK_H
+#define MSGPACK_H
+#include <QByteArray>
+#include <QVariantList>
+
+namespace MsgPack
+{
+
+    QVariantList deserialize(const QByteArray &data);
+}
+
+#endif // MSGPACK_H

private/msgpack_p.cpp

@@ -0,0 +1,6 @@
+#include "msgpack_p.h"
+
+static quint8 MsgPackPrivate::data_sizes[] = {
+    0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, // fixmap upto 15 elements
+
+};

private/msgpack_p.h

@@ -0,0 +1,33 @@
+#ifndef MSGPACK_P_H
+#define MSGPACK_P_H
+#include <QVariant>
+
+/* parser functions:
+ * QVariant _type_(quint8 *p, int &i);
+ * parses some type, which data is stored at p
+ *
+ */
+
+namespace MsgPackPrivate
+{
+/* data sizes for types from 0x7f to 0xe0
+ * (without positive and negative fixint)
+ ** fixed size types:
+ * possible values: 1, 2, 3, 4, 5, 6, 9, 10, 18 - bytes
+ * 254 - size is in next 1 byte
+ * 253 - 2
+ * 251 - 4
+ ** ext formats:
+ * 126 - size is in next byte + 1 type byte
+ * 125 - 2 byte size + 1 type byte
+ * 123 - 4 byte size + 1 type byte
+ */
+
+    static quint8 data_sizes[96];
+
+    QVariant positive_fixint(quint8 *p);
+
+
+}
+
+#endif // MSGPACK_P_H

qmsgpack.pro

@@ -0,0 +1,24 @@
+#-------------------------------------------------
+#
+# Project created by QtCreator 2014-09-07T17:43:05
+#
+#-------------------------------------------------
+
+QT       += core
+
+QT       -= gui
+
+TARGET = qmsgpack
+#CONFIG   += console
+CONFIG   -= app_bundle
+
+TEMPLATE = app
+
+
+SOURCES += main.cpp \
+    msgpack.cpp \
+    private/msgpack_p.cpp
+
+HEADERS += \
+    msgpack.h \
+    private/msgpack_p.h