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#include <QtCore/QDebug>
#include <QtCore/QDataStream>
#include <QtCore/QDirIterator>
#include "smartpen.h"
#include "paperreplay.h"
namespace
{
bool readUtfString(QDataStream &stream, QString &s)
{
quint16 len;
stream >> len;
QByteArray buffer(len, Qt::Uninitialized);
if (stream.readRawData(buffer.data(), len) != len) {
return false;
}
s = QString::fromUtf8(buffer);
return true;
}
}
PaperReplay::PaperReplay(QObject *parent) :
QObject(parent)
{
}
bool PaperReplay::open(const QString &path, const QString &penSerial, quint64 notebookGuid)
{
_dir.setPath(path + QString("/userdata/%1/Paper Replay/99/%2/sessions")
.arg(penSerial)
.arg(qulonglong(notebookGuid), notebookGuid == 0 ? 1 : 16, 16, QLatin1Char('0')));
if (!_dir.exists()) {
qDebug() << "Cannot open paper replay:" << _dir.absolutePath() << "does not exist";
return false;
}
QDirIterator iter(_dir.path(), QStringList("PRS-*"), QDir::Dirs | QDir::NoDotAndDotDot);
while (iter.hasNext()) {
QDir sessionDir(iter.next());
bool ok;
quint64 sessionId = sessionDir.dirName().mid(4).toULongLong(&ok, 16);
if (!ok) {
qWarning() << "Invalid session identifier:" << sessionDir.dirName();
}
Session &session = _sessions[sessionId];
if (!parseSessionInfo(session, sessionDir.filePath("session.info"))) {
qWarning() << "Could not parse:" << sessionDir.absoluteFilePath("session.info");
}
if (!parseSessionPages(session, sessionDir.filePath("session.pages"))) {
qWarning() << "Could not parse:" << sessionDir.absoluteFilePath("session.pages");
}
}
return true;
}
void PaperReplay::close()
{
_sessions.clear();
_byPage.clear();
_dir.setPath(QString());
}
QList<PaperReplay::Session> PaperReplay::sessions()
{
return _sessions.values();
}
QList<PaperReplay::Session> PaperReplay::sessions(quint64 pageAddress)
{
QList<Session> sessions;
QMultiMap<quint64, quint64>::iterator it = _byPage.find(pageAddress);
while (it != _byPage.end() && it.key() == pageAddress) {
sessions.append(_sessions[it.value()]);
}
return sessions;
}
bool PaperReplay::parseSessionInfo(Session &session, const QString &path)
{
QFile f(path);
if (f.open(QIODevice::ReadOnly)) {
return parseSessionInfo(session, &f);
} else {
return false;
}
}
bool PaperReplay::parseSessionInfo(Session &session, QIODevice *dev)
{
unsigned char magic[2];
if (dev->read(reinterpret_cast<char*>(magic), 2) != 2 ||
magic[0] != 0xFA || magic[1] != 0xCE) {
qWarning() << "Invalid magic";
return false;
}
char version = 0;
if (!dev->getChar(&version)) {
qWarning() << "Short read while getting version number";
return false;
}
switch (version) {
case 3:
return parseSessionInfoV3(session, dev);
default:
qWarning() << "Unknown version:" << version;
return false;
}
}
bool PaperReplay::parseSessionInfoV3(Session &session, QIODevice *dev)
{
QDataStream s(dev);
if (s.skipRawData(5) != 5) return false;
qint64 startTime, endTime, creationTime;
QString name;
s >> startTime >> endTime >> creationTime;
if (!readUtfString(s, name)) {
return false;
}
qDebug() << "Name:" << name << Smartpen::fromPenTime(startTime) << Smartpen::fromPenTime(endTime) << creationTime;
quint16 num_clips;
s >> num_clips;
for (uint i = 0; i < num_clips; ++i) {
QString file;
if (!readUtfString(s, file)) {
return false;
}
s >> startTime >> endTime;
qDebug() << " Clip:" << file << startTime << endTime;
qDebug() << " " << QDateTime::fromTime_t(startTime) << QDateTime::fromTime_t(endTime);
}
quint16 num_strokes;
s >> num_strokes;
for (uint i = 0; i < num_strokes; ++i) {
quint64 a, b, c;
quint32 d;
QString nbGuid;
quint8 f, g;
s >> a >> b >> c >> d;
if (!readUtfString(s, nbGuid)) {
return false;
}
s >> f >> g;
qDebug() << " Stroke:" << a << b << c << d << nbGuid << f << g;
}
return true;
}
bool PaperReplay::parseSessionPages(Session &session, const QString &path)
{
QFile f(path);
if (f.open(QIODevice::ReadOnly)) {
return parseSessionPages(session, &f);
} else {
return false;
}
}
bool PaperReplay::parseSessionPages(Session &session, QIODevice *dev)
{
unsigned char magic[2];
if (dev->read(reinterpret_cast<char*>(magic), 2) != 2 ||
magic[0] != 0xCA || magic[1] != 0xBE) {
qWarning() << "Invalid magic";
return false;
}
char version = 0;
if (!dev->getChar(&version)) {
qWarning() << "Short read while getting version number";
return false;
}
switch (version) {
case 1:
return parseSessionPagesV1(session, dev);
default:
qWarning() << "Unknown version:" << version;
return false;
}
}
bool PaperReplay::parseSessionPagesV1(Session &session, QIODevice *dev)
{
QDataStream s(dev);
if (s.skipRawData(1) != 1) return false;
quint16 num_pages = 0;
s >> num_pages;
session.pages.reserve(session.pages.size() + num_pages);
for (uint i = 0; i < num_pages; ++i) {
quint64 address, unk;
s >> address >> unk;
session.pages.append(address);
qDebug() << " Page:" << address << unk;
}
return true;
}
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