C++ Stream::GetPos方法代码示例

void DockCont::Serialize(Stream& s)
{
	int ctrl = 'D';
	int cont = 'C';
	const Vector<DockableCtrl *> &dcs = base->GetDockableCtrls();

	if (s.IsStoring()) {
		if (GetCount() == 1 && IsDockCont(tabbar.Get(0)))
			return ContCast(tabbar.Get(0))->Serialize(s);

		int cnt = GetCount();
		s / cont / cnt;
		for (int i = GetCount() - 1; i >= 0; i--) {
			if (IsDockCont(tabbar.Get(i)))
				ContCast(tabbar.Get(i))->Serialize(s);
			else {
				DockableCtrl *dc = DockCast(tabbar.Get(i));
				int ix = base->FindDocker(dc);
				s / ctrl / ix;
			}
		}
		int cursor = tabbar.GetCursor();
		int groupix = tabbar.GetGroup();
		s / cursor / groupix;
	}
	else {
		int cnt;
		int type;

		s / type / cnt;
		ASSERT(type == cont);
		for (int i = 0; i < cnt; i++) {
			int64 pos = s.GetPos();
			s / type;
			if (type == cont) {
				s.Seek(pos);
				DockCont *dc = base->CreateContainer();
				dc->Serialize(s);
				base->DockContainerAsTab(*this, *dc, true);
			}
			else if (type == ctrl) {
				int ix;
				s / ix;
				if (ix >= 0 && ix <= dcs.GetCount())
					Add(*dcs[ix]);
			}
			else
				ASSERT(false);
		}
		int cursor, groupix;
		s / cursor / groupix;
		tabbar.SetGroup(groupix);
		tabbar.SetCursor(min(tabbar.GetCount()-1, cursor));
		TabSelected();
	}
}

static void PutOctalString(Stream& out, const char *b, const char *e, bool split = false)
{
	out.Put('\"');
	int64 start = out.GetPos();
	while(b < e) {
		if(split && out.GetPos() >= start + 200u) {
			out.Put("\"\r\n\t\"");
			start = out.GetPos();
		}
		if((byte)*b >= ' ' && *b != '\x7F' && *b != '\xFF') {
			if(*b == '\\' || *b == '\"' || *b == '\'')
				out.Put('\\');
			out.Put(*b++);
		}
		else if(IsDigit(b[1]))
			out.Put(Sprintf("\\%03o", (byte)*b++));
		else
			out.Put(Sprintf("\\%o", (byte)*b++));
	}
	out.Put('\"');
}

int32 Chunk::FindSubChunkOffset(std::string name)
{
    // Reverse the name
    name = std::string(name.rbegin(), name.rend());
    if (name.size() != 4)
        return -1;

    Stream* stream = GetStream();
    uint32 matched = 0;
    while (stream->GetPos() < stream->GetSize())
    {
        char b = stream->Read<char>();
        if (b != name[matched])
            matched = 0;
        else
            ++matched;

        if (matched == 4)
            return stream->GetPos() - 4;
    }
    return -1;
}