CWE-ou-minkata/Sources/Plasma/PubUtilLib/plResMgr/plRegistryKeyList.h

/*==LICENSE==*

CyanWorlds.com Engine - MMOG client, server and tools
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*==LICENSE==*/
#ifndef plRegistryKeyList_h_inc
#define plRegistryKeyList_h_inc

#include "HeadSpin.h"
#include "pnKeyedObject/plKeyImp.h"
#include <vector>
#include <set>

class plRegistryKeyIterator;

class KeySorter
{
public:
    bool operator() (plKeyImp* k1, plKeyImp* k2) const
    {
        hsAssert(k1 && k2, "Should have valid keys here");
        return k1->GetName().Compare(k2->GetName(), plString::kCaseInsensitive) < 0;
    }
};

//
//  List of keys for a single class type.
//
class plRegistryKeyList
{
protected:
    friend class plKeyFinder;

    uint16_t fClassType;
    // Lock counter for iterating. If this is >0, don't do any ops that
    // can change key positions in the array (instead, just leave holes)
    uint16_t fLocked;

    enum Flags { kStaticUnsorted = 0x1 };
    uint8_t fFlags;

    // Static keys are one's we read off disk.  These don't change and are
    // assumed to be already sorted when they're read in.
    typedef std::vector<plKeyImp*> StaticVec;
    StaticVec fStaticKeys;
    uint32_t fReffedStaticKeys;   // Number of static keys that are loaded

    // Dynamic keys are anything created at runtime.  They are put in the
    // correct sorted position when they are added
    typedef std::set<plKeyImp*, KeySorter> DynSet;
    DynSet fDynamicKeys;

    plRegistryKeyList() {}

    void ILock();
    void IUnlock();

    void IRepack();

public:
    plRegistryKeyList(uint16_t classType);
    ~plRegistryKeyList();

    uint16_t GetClassType() const { return fClassType; }

    // Find a key by name (case-insensitive)
    plKeyImp* FindKey(const plString& keyName);
    // Find a key by uoid index.
    plKeyImp* FindKey(const plUoid& uoid);

    bool IterateKeys(plRegistryKeyIterator* iterator);

    // Changes in our load status that can be caused by loading or unloading a key
    enum LoadStatus
    {
        kNoChange,
        kDynLoaded,
        kDynUnloaded,
        kStaticUnloaded,
    };
    void AddKey(plKeyImp* key, LoadStatus& loadStatusChange);
    void SetKeyUsed(plKeyImp* key);
    bool SetKeyUnused(plKeyImp* key, LoadStatus& loadStatusChange);

    // Export time only.  Before we write to disk, assign all the static keys
    // object ID's that they can use to do fast lookups at load time.
    void PrepForWrite();

    void Read(hsStream* s);
    void Write(hsStream* s);
};

#endif // plRegistryKeyList_h_inc