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script.cpp
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script.cpp
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/*
* Copyright (C) 2016 Dmitry Morozov <dmorozov@outlook.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; either version 2 of the License, or
* (at your option) any later version.
*/
#include "script.h"
#include "skin.h"
#include "system.h"
#include "callback.h"
#include "function.h"
#include "interpreter.h"
Q_LOGGING_CATEGORY(MODERNUI_SCRIPT_LOADER, "modernui.script.loader", QtWarningMsg)
static const quint16 maki_magic = 0x4746;
static const int guid_length = 16;
Script::Script(const QXmlStreamAttributes &attributes, QObject *parent) : QObject(parent)
{
QString name, value;
Q_FOREACH (const QXmlStreamAttribute &i, attributes) {
name = i.name().toString().toLower();
value = i.value().toString();
if (!setProperty(qPrintable(name), QVariant(value))) {
if (dynamicPropertyNames().contains(qPrintable(name))) {
qWarning("%s: unknown property '%s'", Q_FUNC_INFO, qUtf8Printable(name));
setProperty(qPrintable(name), QVariant());
}
qWarning("%s: failed to set '%s' to '%s'", Q_FUNC_INFO, qUtf8Printable(name), qUtf8Printable(value));
}
}
m_system = System::instance();
}
Script::~Script()
{
//if (unloadCallback != Q_NULLPTR)
//unloadCallback->run();
}
void Script::setFile(const QString &file)
{
QString path = Skin::instance()->findFile(file);
if (path.isEmpty()) {
qWarning("%s: could not find file '%s'", Q_FUNC_INFO, qUtf8Printable(file));
return;
}
QFile script(path);
if (!script.open(QFile::ReadOnly)) {
qWarning("%s: %s", qUtf8Printable(path), qUtf8Printable(script.errorString()));
return;
}
m_bin = script.readAll();
script.close();
if (m_bin.isEmpty())
qWarning("%s: failed to read script file", Q_FUNC_INFO);
else
m_file = file;
}
void Script::setParam(const QString ¶m)
{ m_param = param; }
int Script::load()
{
int ret;
if (m_bin.isEmpty())
return -1;
mCDebug(MODERNUI_SCRIPT_LOADER) << Q_FUNC_INFO << " : " << id();
QDataStream stream(m_bin);
stream.setByteOrder(QDataStream::LittleEndian);
// Check magic
quint16 magic = load16(stream);
if (magic != maki_magic) {
qWarning("%s: %s: bad script magic", Q_FUNC_INFO, qUtf8Printable(m_file));
return -1;
}
// Skip version and something else
stream.skipRawData(6);
loadTypes(stream);
ret = loadFunctions(stream);
if (ret == -1)
return ret;
ret = loadVariables(stream);
if (ret == -1)
return ret;
ret = loadConstants(stream);
if (ret == -1)
return ret;
ret = loadCallbacks(stream);
if (ret == -1)
return ret;
ret = loadCode(stream);
if (ret == -1)
return ret;
if (!stream.atEnd())
qWarning("%s: %s: extra data left, possible parsing error", Q_FUNC_INFO, qUtf8Printable(m_file));
m_bin.clear();
if (loadCallback != Q_NULLPTR)
loadCallback->run();
return 0;
}
QVector<Variable> &Script::variables()
{
return m_variables;
}
Function *Script::function(quint32 index) const
{
if (index >= static_cast<quint32>(m_functions.size()))
return Q_NULLPTR;
return m_functions.at(index);
}
const QUuid Script::guid(quint32 index) const
{
if (qint64(index) >= m_guids.size())
return QUuid();
return m_guids.at(index);
}
void Script::loadTypes(QDataStream &stream)
{
QUuid guid;
quint32 count = load32(stream);
mCDebug(MODERNUI_SCRIPT_LOADER) << Q_FUNC_INFO;
while (count--) {
uint l = load32(stream);
ushort w1 = load16(stream);
ushort w2 = load16(stream);
uchar b1 = load8(stream);
uchar b2 = load8(stream);
uchar b3 = load8(stream);
uchar b4 = load8(stream);
uchar b5 = load8(stream);
uchar b6 = load8(stream);
uchar b7 = load8(stream);
uchar b8 = load8(stream);
guid = QUuid(l, w1, w2, b1, b2, b3, b4, b5, b6, b7, b8);
mCDebug(MODERNUI_SCRIPT_LOADER) << "\t" << guid;
m_guids.append(guid);
}
}
int Script::loadFunctions(QDataStream &stream)
{
quint32 count = load32(stream);
mCDebug(MODERNUI_SCRIPT_LOADER) << Q_FUNC_INFO;
while (count--) {
quint16 type_index = load16(stream);
QUuid guid = m_guids.at(type_index & 0xff);
// Dummy
stream.skipRawData(2);
QMetaMethod method;
QString name = loadString(stream).toLower();
if (name != "onscriptloaded" && name != "onscriptunloading") {
method = Interpreter::methodOfMakiFunction(guid, name);
if (!method.isValid()) {
qWarning("%s: %s: no method found for %s", Q_FUNC_INFO, qUtf8Printable(id()), qUtf8Printable(name));
return -1;
}
}
mCDebug(MODERNUI_SCRIPT_LOADER) << "\t" << m_functions.size() << " " << name;
Function *func = new Function(name, guid, method, this);
m_functions.append(func);
}
return 0;
}
int Script::loadVariables(QDataStream &stream)
{
quint32 count = load32(stream);
mCDebug(MODERNUI_SCRIPT_LOADER) << Q_FUNC_INFO;
for (quint32 i = 0; i < count; i++) {
Variable var;
quint8 type_index = load8(stream);
quint8 object = load8(stream);
quint16 subclass = load16(stream);
quint16 uint1 = load16(stream);
quint16 uint2 = load16(stream);
quint16 uint3 = load16(stream);
quint16 uint4 = load16(stream);
quint16 global = load8(stream);
quint16 system = load8(stream);
if (object) {
if (type_index >= m_guids.size()) {
qWarning("%s: wrong object type index", Q_FUNC_INFO);
return -1;
}
QUuid guid = m_guids.at(type_index);
const QMetaObject *meta_object = Interpreter::metaObjectForGuid(guid);
if (meta_object == Q_NULLPTR) {
qWarning("%s: no metaobject found for guid '%s'", Q_FUNC_INFO, qUtf8Printable(guid.toString()));
return -1;
}
QString type_name = meta_object->className();
mCDebug(MODERNUI_SCRIPT_LOADER) << "\t " << i << " index=" << type_index << " subclass=" << subclass << " global="
<< global << " system=" << system << " type=" << type_name;
//int type_id = QMetaType::type(qPrintable(type_name));
if (global) {
if (type_name == "System") {
var.setValue(m_system);
var.setConstant();
} else {
var = M_NULLPTR;
}
} else if (type_name == "Config") {
} else {
var = M_NULLPTR;
}
} else if (subclass) {
Q_UNIMPLEMENTED();
return -1;
} else {
if (!m_varTypes.contains(type_index)) {
qWarning("%s: wrong variable type number", Q_FUNC_INFO);
return -1;
}
//QString type_name = m_varTypes.value(type);
//int type_id = QMetaType::type(qPrintable(type_name));
int type_id = m_varTypes.value(type_index);
mCDebug(MODERNUI_SCRIPT_LOADER) << "\t " << i << " index=" << type_index << " global=" << global << " system="
<< system << " type=" << QMetaType::typeName(type_id);
if (type_id == QMetaType::QString)
var.setValue(QString());
else
var = Variable::fromCodedValue(type_id, uint1, uint2, uint3, uint4);
/* Special: this is NULL */
if ((i == 1) && (type_id == QMetaType::Int)) {
var = M_NULLPTR;
var.setConstant();
}
}
m_variables.append(var);
}
return 0;
}
int Script::loadConstants(QDataStream &stream)
{
quint32 count = load32(stream);
mCDebug(MODERNUI_SCRIPT_LOADER) << Q_FUNC_INFO;
while (count--) {
quint32 var_num = load32(stream);
int type_id = m_variables.at(var_num).userType();
if (type_id == QMetaType::QString) {
m_variables[var_num].setValue(loadString(stream));
m_variables[var_num].setConstant();
mCDebug(MODERNUI_SCRIPT_LOADER) << "\t '" << m_variables.at(var_num).toString() << "'";
} else {
qWarning("%s: unknown type for constant: %i", Q_FUNC_INFO, type_id);
return -1;
}
}
return 0;
}
int Script::loadCallbacks(QDataStream &stream)
{
quint32 count = load32(stream);
mCDebug(MODERNUI_SCRIPT_LOADER) << Q_FUNC_INFO;
while (count--) {
quint32 var_num = load32(stream);
quint32 func_num = load32(stream);
quint32 offset = load32(stream);
if (var_num >= static_cast<quint32>(m_variables.size())) {
qWarning("%s: wrong variable nuber code", Q_FUNC_INFO);
return -1;
}
if (func_num >= static_cast<quint32>(m_functions.size())) {
qWarning("%s: wrong function nuber code", Q_FUNC_INFO);
return -1;
}
Variable &var = m_variables[var_num];
Function *func = m_functions.at(func_num);
Callback *cb = new Callback(func, offset, this);
mCDebug(MODERNUI_SCRIPT_LOADER) << "\tvar: " << var << " func: " << func->name() << " offset=" << offset;
if (func->name() == "onscriptloaded") {
loadCallback = cb;
} else if (func->name() == "onscriptunloading") {
unloadCallback = cb;
} else if (var.addCallback(cb) == -1) {
qWarning("%s: failed to add callback function", Q_FUNC_INFO);
return -1;
}
}
return 0;
}
int Script::loadCode(QDataStream &stream)
{
quint32 code_length = load32(stream);
mCDebug(MODERNUI_SCRIPT_LOADER) << Q_FUNC_INFO << ": length=" << code_length;
m_code.resize(code_length);
int nread = stream.readRawData(m_code.data(), code_length);
if (nread == -1) {
qWarning("%s: read error", Q_FUNC_INFO);
return -1;
}
if (code_length > static_cast<quint32>(nread)) {
qWarning("%s: actual code length is less then expected", Q_FUNC_INFO);
return -1;
}
return 0;
}
const QMap<quint8, int> Script::m_varTypes {
{2, QMetaType::Int},
{3, QMetaType::Float},
{4, QMetaType::Double},
{5, QMetaType::Bool},
{6, QMetaType::QString}};