Gitorious

4f0dfcd by Jos van den Oever at 2010-01-30	1	#ifndef LEINPUT_H
	2	#define LEINPUT_H
	3
a3b7549 by Jos van den Oever at 2010-01-31	4	#include <QtCore/QtEndian>
c0f6293 by Jos van den Oever at 2011-09-09	5	#include <QtCore/QByteArray>
8860774 by Jos van den Oever at 2011-09-11	6	#include <QtCore/QDebug>
c0f6293 by Jos van den Oever at 2011-09-09	7
	8	template <typename T>
	9	const T*
	10	toPtr(const T& t) {
	11	return (t.isValid()) ?&t :0;
	12	}
8834853 by Jos van den Oever at 2011-06-13	13
c3dcdb1 by Jos van den Oever at 2011-09-06	14	class FixedSizeParsedObject {
6559ccc by Jos van den Oever at 2011-09-06	15	private:
c3dcdb1 by Jos van den Oever at 2011-09-06	16	const char* _data;
6559ccc by Jos van den Oever at 2011-09-06	17	protected:
c3dcdb1 by Jos van den Oever at 2011-09-06	18	explicit FixedSizeParsedObject() :_data(0) {}
	19	inline void init(const char* data) {
	20	_data = data;
	21	}
	22	public:
	23	inline const char* getData() const { return _data; }
	24	inline bool isValid() const { return _data; }
c0f6293 by Jos van den Oever at 2011-09-09	25	inline bool operator==(const FixedSizeParsedObject& o) {
	26	return _data && o._data && _data == o._data;
	27	}
c3dcdb1 by Jos van den Oever at 2011-09-06	28	};
	29
	30	class ParsedObject : public FixedSizeParsedObject {
	31	private:
	32	quint32 _size;
	33	protected:
	34	explicit ParsedObject() :FixedSizeParsedObject(), _size(0) {}
	35	inline void init(const char* data, quint32 size) {
	36	FixedSizeParsedObject::init(data);
	37	_size = size;
	38	}
	39	public:
	40	inline quint32 getSize() const { return _size; }
	41	};
	42
8834853 by Jos van den Oever at 2011-06-13	43	template <typename T>
	44	class MSOCastArray {
	45	private:
	46	const T* _data;
	47	quint32 _count;
	48	public:
6559ccc by Jos van den Oever at 2011-09-06	49	explicit MSOCastArray() :_data(0), _count(0) {}
	50	explicit MSOCastArray(const T* data, qint32 count) :_data(data), _count(count) {}
c0f6293 by Jos van den Oever at 2011-09-09	51	inline const T* getData() const { return _data; }
	52	QByteArray mid(int pos, int len = -1) const {
	53	if (pos > _count) return QByteArray();
	54	if (len < 0 \|\| len > _count - pos) {
	55	len = _count - pos;
	56	}
	57	return QByteArray(_data + pos, len);
	58	}
	59	inline int getCount() const { return _count; }
	60	inline T operator[](int pos) const { return _data[pos]; }
	61	inline bool operator!=(const QByteArray& b) {
	62	return QByteArray::fromRawData(_data, _count) != b;
	63	}
	64	inline operator QByteArray() const { return QByteArray(_data, _count); }
8834853 by Jos van den Oever at 2011-06-13	65	};
194962a by Jos van den Oever at 2011-06-14	66	template <typename T> class MSOArray;
8834853 by Jos van den Oever at 2011-06-13	67	template <typename T>
	68	class MSOconst_iterator {
	69	private:
194962a by Jos van den Oever at 2011-06-14	70	T currentItem;
	71	const MSOArray<T>& c;
	72	quint32 offset;
8834853 by Jos van den Oever at 2011-06-13	73	public:
6559ccc by Jos van den Oever at 2011-09-06	74	explicit MSOconst_iterator(const MSOArray<T>& c_, int o) :c(c_), offset(o) {
	75	currentItem = T(c.getData(), c.getSize());
8834853 by Jos van den Oever at 2011-06-13	76	}
194962a by Jos van den Oever at 2011-06-14	77	inline bool operator!=(const MSOconst_iterator &o) const {
	78	return offset != o.offset;
8834853 by Jos van den Oever at 2011-06-13	79	}
194962a by Jos van den Oever at 2011-06-14	80	inline void operator++() {
6559ccc by Jos van den Oever at 2011-09-06	81	offset += currentItem.getSize();
	82	currentItem = T(c.getData() + offset, c.getSize() - offset);
194962a by Jos van den Oever at 2011-06-14	83	}
	84	inline const T& operator*() const {
	85	return currentItem;
8834853 by Jos van den Oever at 2011-06-13	86	}
	87	};
	88	template <typename T>
6559ccc by Jos van den Oever at 2011-09-06	89	class MSONullable {
	90	private:
8860774 by Jos van den Oever at 2011-09-11	91	T t;
6559ccc by Jos van den Oever at 2011-09-06	92	public:
8860774 by Jos van den Oever at 2011-09-11	93	MSONullable() {}
	94	MSONullable(const T& data) :t(data) {}
	95	inline bool isPresent() const { return t.isValid(); }
	96	inline quint32 getSize() const { return t.getSize(); }
	97	inline const T& operator * () const { return t; }
6559ccc by Jos van den Oever at 2011-09-06	98	};
	99	template <typename T>
	100	class MSOBasicNullable {
	101	private:
	102	T _value;
	103	bool _set;
	104	public:
	105	explicit MSOBasicNullable() :_value(0), _set(false) {}
	106	MSOBasicNullable(T value) :_value(value), _set(true) {}
	107	inline bool isPresent() const { return _set; }
	108	inline T operator * () const { return _value; }
	109	};
	110	template <typename T>
c3dcdb1 by Jos van den Oever at 2011-09-06	111	class MSOArray : public ParsedObject {
26bf3d9 by Jos van den Oever at 2011-08-11	112	friend class MSOconst_iterator<T>;
	113	private:
c3dcdb1 by Jos van den Oever at 2011-09-06	114	quint32 _count;
8834853 by Jos van den Oever at 2011-06-13	115	public:
	116	typedef MSOconst_iterator<T> const_iterator;
c3dcdb1 by Jos van den Oever at 2011-09-06	117	MSOArray() :_count(0) {}
	118	MSOArray(const char* d, quint32 maxsize) :_count(0) {
194962a by Jos van den Oever at 2011-06-14	119	quint32 msize = 0;
	120	quint32 mcount = 0;
	121	while (msize < maxsize) {
	122	T v(d + msize, maxsize - msize);
6559ccc by Jos van den Oever at 2011-09-06	123	if (!v.isValid()) {
b87ae61 by Jos van den Oever at 2011-06-14	124	break;
	125	}
6559ccc by Jos van den Oever at 2011-09-06	126	msize += v.getSize();
194962a by Jos van den Oever at 2011-06-14	127	mcount++;
8834853 by Jos van den Oever at 2011-06-13	128	}
c3dcdb1 by Jos van den Oever at 2011-09-06	129	ParsedObject::init(d, msize);
194962a by Jos van den Oever at 2011-06-14	130	_count = mcount;
8834853 by Jos van den Oever at 2011-06-13	131	}
c3dcdb1 by Jos van den Oever at 2011-09-06	132	MSOArray(const char* d, quint32 maxsize, quint32 mcount) :_count(0) {
194962a by Jos van den Oever at 2011-06-14	133	quint32 msize = 0;
	134	for (quint32 i = 0; i < mcount; ++i) {
	135	T v(d + msize, maxsize - msize);
6559ccc by Jos van den Oever at 2011-09-06	136	if (!v.isValid()) {
b87ae61 by Jos van den Oever at 2011-06-14	137	return;
	138	}
6559ccc by Jos van den Oever at 2011-09-06	139	msize += v.getSize();
b87ae61 by Jos van den Oever at 2011-06-14	140	if (msize > maxsize) {
	141	return;
	142	}
8834853 by Jos van den Oever at 2011-06-13	143	}
c3dcdb1 by Jos van den Oever at 2011-09-06	144	ParsedObject::init(d, msize);
194962a by Jos van den Oever at 2011-06-14	145	_count = mcount;
	146	}
6559ccc by Jos van den Oever at 2011-09-06	147	inline quint32 getCount() const {
194962a by Jos van den Oever at 2011-06-14	148	return _count;
	149	}
	150	inline MSOconst_iterator<T> begin() const {
	151	return MSOconst_iterator<T>(*this, 0);
	152	}
	153	inline MSOconst_iterator<T> end() const {
6559ccc by Jos van den Oever at 2011-09-06	154	return MSOconst_iterator<T>(*this, getSize());
194962a by Jos van den Oever at 2011-06-14	155	}
	156	T operator[](quint32 pos) const {
c3dcdb1 by Jos van den Oever at 2011-09-06	157	T t(ParsedObject::getData(), ParsedObject::getSize());
194962a by Jos van den Oever at 2011-06-14	158	quint32 i = 0;
	159	quint32 offset = 0;
c0f6293 by Jos van den Oever at 2011-09-09	160	while (i < pos && t.isValid()) {
6559ccc by Jos van den Oever at 2011-09-06	161	offset += t.getSize();
c3dcdb1 by Jos van den Oever at 2011-09-06	162	t = T(ParsedObject::getData() + offset,
	163	ParsedObject::getSize() - offset);
194962a by Jos van den Oever at 2011-06-14	164	++i;
	165	}
	166	return t;
8834853 by Jos van den Oever at 2011-06-13	167	}
	168	};
4f0dfcd by Jos van den Oever at 2010-01-30	169
	170	inline quint8 readuint8(const char* d) {
	171	return *d;
	172	}
	173	inline quint16 readuint16(const char* d) {
	174	return qFromLittleEndian<quint16>((const unsigned char*)d);
	175	}
	176	inline qint16 readint16(const char* d) {
	177	return qFromLittleEndian<qint16>((const unsigned char*)d);
	178	}
	179	inline quint32 readuint32(const char* d) {
	180	return qFromLittleEndian<quint32>((const unsigned char*)d);
	181	}
	182	inline qint32 readint32(const char* d) {
	183	return qFromLittleEndian<qint32>((const unsigned char*)d);
	184	}
	185
	186	inline bool readbit(const char* d) {
	187	return *d & 0x01;
	188	}
	189	inline bool readbit_1(const char* d) {
	190	return *d >> 1 & 0x01;
	191	}
	192	inline bool readbit_2(const char* d) {
	193	return *d >> 2 & 0x01;
	194	}
	195	inline bool readbit_3(const char* d) {
	196	return *d >> 3 & 0x01;
	197	}
	198	inline bool readbit_4(const char* d) {
	199	return *d >> 4 & 0x01;
	200	}
	201	inline bool readbit_5(const char* d) {
	202	return *d >> 5 & 0x01;
	203	}
	204	inline bool readbit_6(const char* d) {
	205	return *d >> 6 & 0x01;
	206	}
	207	inline bool readbit_7(const char* d) {
	208	return *d >> 7 & 0x01;
	209	}
	210	inline quint8 readuint2(const char* d) {
	211	return *d & 0x03;
	212	}
	213	inline quint8 readuint2_2(const char* d) {
	214	return *d >> 2 & 0x03;
	215	}
	216	inline quint8 readuint2_4(const char* d) {
	217	return *d >> 4 & 0x03;
	218	}
	219	inline quint8 readuint2_6(const char* d) {
	220	return *d >> 6 & 0x03;
	221	}
	222	inline quint8 readuint3(const char* d) {
	223	return *d & 0x07;
	224	}
	225	inline quint8 readuint3_2(const char* d) {
	226	return *d >> 2 & 0x07;
	227	}
	228	inline quint8 readuint3_5(const char* d) {
	229	return *d >> 5 & 0x07;
	230	}
	231	inline quint8 readuint4(const char* d) {
	232	return *d & 0x0F;
	233	}
	234	inline quint8 readuint4_2(const char* d) {
	235	return *d >> 2 & 0x0F;
	236	}
	237	inline quint8 readuint4_4(const char* d) {
	238	return *d >> 4 & 0x0F;
	239	}
	240	inline quint8 readuint5(const char* d) {
	241	return *d & 0x1F;
	242	}
	243	inline quint8 readuint5_3(const char* d) {
	244	return *d >> 3 & 0x1F;
	245	}
	246	inline quint8 readuint6(const char* d) {
	247	return *d & 0x3F;
	248	}
	249	inline quint8 readuint6_2(const char* d) {
	250	return *d >> 2 & 0x3F;
	251	}
	252	inline quint8 readuint7(const char* d) {
	253	return *d & 0x7F;
	254	}
	255	inline quint8 readuint7_1(const char* d) {
	256	return *d >> 1 & 0x7F;
	257	}
	258	inline quint16 readuint9(const char* d) {
	259	return readuint16(d) & 0x01FF;
	260	}
	261	inline quint16 readuint12_4(const char* d) {
	262	return readuint16(d) >> 4 & 0x0FFF;
	263	}
dc5b75d by Jos van den Oever at 2010-09-27	264	inline quint16 readuint13_3(const char* d) {
	265	return readuint16(d) >> 3 & 0x1FFF;
	266	}
4f0dfcd by Jos van den Oever at 2010-01-30	267	inline quint16 readuint14(const char* d) {
	268	return readuint16(d) & 0x3FFF;
	269	}
	270	inline quint16 readuint14_2(const char* d) {
	271	return readuint16(d) >> 2 & 0x3FFF;
	272	}
	273	inline quint16 readuint15_1(const char* d) {
	274	return readuint16(d) >> 1 & 0x7FFF;
	275	}
	276	inline quint32 readuint20(const char* d) {
	277	return readuint32(d) & 0x0FFFFF;
	278	}
	279	inline quint32 readuint20_4(const char* d) {
	280	return readuint32(d) >> 4 & 0x0FFFFF;
	281	}
	282	inline quint32 readuint30(const char* d) {
	283	return readuint32(d) & 0x3FFFFFFF;
	284	}
	285
	286	#endif