gui/saverthread.cpp

#include "saverthread.h"

#include "trace_writer.hpp"

#include <QFile>
#include <QHash>
#include <QUrl>

#include <QDebug>


static Trace::FunctionSig *
createFunctionSig(ApiTraceCall *call, unsigned id)
{
    Trace::FunctionSig *sig = new Trace::FunctionSig();

    sig->id = id;
    sig->name = qstrdup(call->name().toLocal8Bit());

    QStringList args = call->argNames();
    sig->num_args = args.count();
    sig->arg_names = new const char*[args.count()];
    for (int i = 0; i < args.count(); ++i) {
        sig->arg_names[i] = qstrdup(args[i].toLocal8Bit());
    }

    return sig;
}

static void
deleteFunctionSig(Trace::FunctionSig *sig)
{
    for (int i = 0; i < sig->num_args; ++i) {
        delete [] sig->arg_names[i];
    }
    delete [] sig->arg_names;
    delete [] sig->name;
    delete sig;
}

static Trace::StructSig *
createStructSig(const ApiStruct &str, unsigned id)
{
    ApiStruct::Signature aSig = str.signature();

    Trace::StructSig *sig = new Trace::StructSig();
    sig->id = id;
    sig->name = qstrdup(aSig.name.toLocal8Bit());
    sig->num_members = aSig.memberNames.count();
    char **member_names = new char*[aSig.memberNames.count()];
    sig->member_names = (const char **)member_names;
    for (int i = 0; i < aSig.memberNames.count(); ++i) {
        member_names[i] = qstrdup(aSig.memberNames[i].toLocal8Bit());
    }
    return sig;
}

static void
deleteStructSig(Trace::StructSig *sig)
{
    for (int i = 0; i < sig->num_members; ++i) {
        delete [] sig->member_names[i];
    }
    delete [] sig->member_names;
    delete [] sig->name;
    delete sig;
}

static Trace::EnumSig *
createEnumSig(const ApiEnum &en, unsigned id)
{
    Trace::EnumSig *sig = new Trace::EnumSig();

    sig->id = id;
    sig->name = qstrdup(en.name().toLocal8Bit());
    sig->value = en.value().toLongLong();

    return sig;
}

static void
deleteEnumSig(Trace::EnumSig *sig)
{
    delete [] sig->name;
    delete sig;
}

static Trace::BitmaskSig *
createBitmaskSig(const ApiBitmask &bt, unsigned id)
{
    ApiBitmask::Signature bsig = bt.signature();
    ApiBitmask::Signature::const_iterator itr;

    Trace::BitmaskSig *sig = new Trace::BitmaskSig();
    Trace::BitmaskFlag *flags = new Trace::BitmaskFlag[bsig.count()];

    sig->id = id;
    sig->num_flags = bsig.count();
    sig->flags = flags;

    int i = 0;
    for (itr = bsig.constBegin(); itr != bsig.constEnd(); ++itr, ++i) {
        flags[i].name = qstrdup(itr->first.toLocal8Bit());
        flags[i].value = itr->second;
    }

    return sig;
}

static void
deleteBitmaskSig(Trace::BitmaskSig *sig)
{
    for (int i = 0; i < sig->num_flags; ++i) {
        delete [] sig->flags[i].name;
    }
    delete [] sig->flags;
    delete sig;
}

static void
writeValue(Trace::Writer &writer, const QVariant &var, unsigned &id)
{
    int arrayType   = QMetaType::type("ApiArray");
    int bitmaskType = QMetaType::type("ApiBitmask");
    int structType  = QMetaType::type("ApiStruct");
    int pointerType = QMetaType::type("ApiPointer");
    int enumType    = QMetaType::type("ApiEnum");
    int type = var.userType();

    switch(type) {
    case QVariant::Bool:
        writer.writeBool(var.toBool());
        break;
    case QVariant::ByteArray: {
        QByteArray ba = var.toByteArray();
        writer.writeBlob((const void*)ba.constData(), ba.size());
    }
        break;
    case QVariant::Double:
        writer.writeDouble(var.toDouble());
        break;
    case QMetaType::Float:
        writer.writeFloat(var.toFloat());
        break;
    case QVariant::Int:
        writer.writeSInt(var.toInt());
        break;
    case QVariant::LongLong:
        writer.writeSInt(var.toLongLong());
        break;
    case QVariant::String: {
        QString str = var.toString();
        writer.writeString(str.toLocal8Bit().constData(), str.length());
    }
        break;
    case QVariant::UInt:
        writer.writeUInt(var.toInt());
        break;
    case QVariant::ULongLong:
        writer.writeUInt(var.toLongLong());
        break;
    default:
        if (type == arrayType) {
            ApiArray array = var.value<ApiArray>();
            QVector<QVariant> vals = array.values();
            writer.beginArray(vals.count());
            foreach(QVariant el, vals) {
                writer.beginElement();
                writeValue(writer, el, ++id);
                writer.endElement();
            }
            writer.endArray();
        } else if (type == bitmaskType) {
            ApiBitmask bm = var.value<ApiBitmask>();
            Trace::BitmaskSig *sig = createBitmaskSig(bm, ++id);
            writer.writeBitmask(sig, bm.value());
            deleteBitmaskSig(sig);
        } else if (type == structType) {
            ApiStruct apiStr = var.value<ApiStruct>();
            QList<QVariant> vals = apiStr.values();
            Trace::StructSig *str = createStructSig(apiStr, ++id);
            writer.beginStruct(str);
            foreach(QVariant val, vals) {
                writeValue(writer, val, ++id);
            }
            writer.endStruct();
            deleteStructSig(str);
        } else if (type == pointerType) {
            ApiPointer apiPtr = var.value<ApiPointer>();
            //writer.beginArray(1);
            //writer.beginElement();
            writer.writeOpaque((const void*)apiPtr.value());
            //writer.endElement();
            //writer.endArray();
        } else if (type == enumType) {
            ApiEnum apiEnum = var.value<ApiEnum>();
            Trace::EnumSig *sig = createEnumSig(apiEnum, ++id);
            writer.writeEnum(sig);
            deleteEnumSig(sig);
        } else {
            qWarning()<<"Unsupported write variant : "
                      << QMetaType::typeName(type);
        }
    }
}

SaverThread::SaverThread(QObject *parent)
    : QThread(parent)
{
}

void SaverThread::saveFile(const QString &fileName,
                           const QVector<ApiTraceCall*> &calls)
{
    m_fileName = fileName;
    m_calls = calls;
    start();
}

void SaverThread::run()
{
    unsigned id = 0;
    qDebug() << "Saving  : " << m_fileName;
    Trace::Writer writer;
    writer.open(m_fileName.toLocal8Bit());
    for (int i = 0; i < m_calls.count(); ++i) {
        ApiTraceCall *call = m_calls[i];
        Trace::FunctionSig *funcSig = createFunctionSig(call, ++id);
        unsigned callNo = writer.beginEnter(funcSig);
        {
            //args
            QVector<QVariant> vars = call->arguments();
            int index = 0;
            foreach(QVariant var, vars) {
                writer.beginArg(index++);
                writeValue(writer, var, ++id);
                writer.endArg();
            }
        }
        writer.endEnter();
        writer.beginLeave(callNo);
        {
            QVariant ret = call->returnValue();
            if (!ret.isNull()) {
                writer.beginReturn();
                writeValue(writer, ret, ++id);
                writer.endReturn();
            }
        }
        writer.endLeave();

        deleteFunctionSig(funcSig);
    }
    writer.close();

    emit traceSaved();
}

#include "saverthread.moc"