/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you under the Apache
 *   License, Version 2.0 (the "License"); you may not use this file
 *   except in compliance with the License. You may obtain a copy of
 *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
 */

#ifndef INCLUDED_REGISTRY_REGISTRY_HXX
#define INCLUDED_REGISTRY_REGISTRY_HXX

#include <registry/regdllapi.h>
#include <registry/regtype.h>
#include <rtl/ustring.hxx>

#ifdef __cplusplus
extern "C" {
#endif

/** specifies a collection of function pointers which represents the complete registry C-API.

    This funtions pointers are used by the C++ wrapper to call the C-API.
*/
struct Registry_Api
{
    void        (REGISTRY_CALLTYPE *acquire)            (RegHandle);
    void        (REGISTRY_CALLTYPE *release)            (RegHandle);
    sal_Bool    (REGISTRY_CALLTYPE *isReadOnly)         (RegHandle);
    RegError    (REGISTRY_CALLTYPE *openRootKey)        (RegHandle, RegKeyHandle*);
    RegError    (REGISTRY_CALLTYPE *getName)            (RegHandle, rtl_uString**);
    RegError    (REGISTRY_CALLTYPE *createRegistry)     (rtl_uString*, RegHandle*);
    RegError    (REGISTRY_CALLTYPE *openRegistry)       (rtl_uString*, RegHandle*, RegAccessMode);
    RegError    (REGISTRY_CALLTYPE *closeRegistry)      (RegHandle);
    RegError    (REGISTRY_CALLTYPE *destroyRegistry)    (RegHandle, rtl_uString*);
    RegError    (REGISTRY_CALLTYPE *loadKey)            (RegHandle, RegKeyHandle, rtl_uString*, rtl_uString*);
    RegError    (REGISTRY_CALLTYPE *saveKey)            (RegHandle, RegKeyHandle, rtl_uString*, rtl_uString*);
    RegError    (REGISTRY_CALLTYPE *mergeKey)           (RegHandle, RegKeyHandle, rtl_uString*, rtl_uString*, sal_Bool, sal_Bool);
    RegError    (REGISTRY_CALLTYPE *dumpRegistry)       (RegHandle, RegKeyHandle);
    void        (REGISTRY_CALLTYPE *acquireKey)         (RegKeyHandle);
    void        (REGISTRY_CALLTYPE *releaseKey)         (RegKeyHandle);
    sal_Bool    (REGISTRY_CALLTYPE *isKeyReadOnly)      (RegKeyHandle);
    RegError    (REGISTRY_CALLTYPE *getKeyName)         (RegKeyHandle, rtl_uString**);
    RegError    (REGISTRY_CALLTYPE *createKey)          (RegKeyHandle, rtl_uString*, RegKeyHandle*);
    RegError    (REGISTRY_CALLTYPE *openKey)            (RegKeyHandle, rtl_uString*, RegKeyHandle*);
    RegError    (REGISTRY_CALLTYPE *openSubKeys)        (RegKeyHandle, rtl_uString*, RegKeyHandle**, sal_uInt32*);
    RegError    (REGISTRY_CALLTYPE *closeSubKeys)       (RegKeyHandle*, sal_uInt32);
    RegError    (REGISTRY_CALLTYPE *deleteKey)          (RegKeyHandle, rtl_uString*);
    RegError    (REGISTRY_CALLTYPE *closeKey)           (RegKeyHandle);
    RegError    (REGISTRY_CALLTYPE *setValue)           (RegKeyHandle, rtl_uString*, RegValueType, RegValue, sal_uInt32);
    RegError    (REGISTRY_CALLTYPE *setLongListValue)   (RegKeyHandle, rtl_uString*, sal_Int32*, sal_uInt32);
    RegError    (REGISTRY_CALLTYPE *setStringListValue) (RegKeyHandle, rtl_uString*, sal_Char**, sal_uInt32);
    RegError    (REGISTRY_CALLTYPE *setUnicodeListValue)(RegKeyHandle, rtl_uString*, sal_Unicode**, sal_uInt32);
    RegError    (REGISTRY_CALLTYPE *getValueInfo)       (RegKeyHandle, rtl_uString*, RegValueType*, sal_uInt32*);
    RegError    (REGISTRY_CALLTYPE *getValue)           (RegKeyHandle, rtl_uString*, RegValue);
    RegError    (REGISTRY_CALLTYPE *getLongListValue)   (RegKeyHandle, rtl_uString*, sal_Int32**, sal_uInt32*);
    RegError    (REGISTRY_CALLTYPE *getStringListValue) (RegKeyHandle, rtl_uString*, sal_Char***, sal_uInt32*);
    RegError    (REGISTRY_CALLTYPE *getUnicodeListValue)(RegKeyHandle, rtl_uString*, sal_Unicode***, sal_uInt32*);
    RegError    (REGISTRY_CALLTYPE *freeValueList)      (RegValueType, RegValue, sal_uInt32);
    RegError    (REGISTRY_CALLTYPE *createLink)         (RegKeyHandle, rtl_uString*, rtl_uString*);
    RegError    (REGISTRY_CALLTYPE *deleteLink)         (RegKeyHandle, rtl_uString*);
    RegError    (REGISTRY_CALLTYPE *getKeyType)         (RegKeyHandle, rtl_uString*, RegKeyType*);
    RegError    (REGISTRY_CALLTYPE *getLinkTarget)      (RegKeyHandle, rtl_uString*, rtl_uString**);
    RegError    (REGISTRY_CALLTYPE *getResolvedKeyName) (RegKeyHandle, rtl_uString*, sal_Bool, rtl_uString**);
    RegError    (REGISTRY_CALLTYPE *getKeyNames)        (RegKeyHandle, rtl_uString*, rtl_uString***, sal_uInt32*);
    RegError    (REGISTRY_CALLTYPE *freeKeyNames)       (rtl_uString**, sal_uInt32);
};

/** the API initialization function.
*/
REG_DLLPUBLIC Registry_Api* REGISTRY_CALLTYPE initRegistry_Api(void);

#ifdef __cplusplus
}
#endif


class RegistryKey;



/** The Registry provides the functionality to read and write information in a registry file.

    The class is implemented inline and use a C-Api.
*/
class Registry
{
public:
    /** Default constructor.
     */
    inline Registry();

    /// Copy constructcor
    inline Registry(const Registry& toCopy);

    /// Destructor. The Destructor close the registry if it is open.
    inline ~Registry();

    /// Assign operator
    inline Registry& operator = (const Registry& toAssign);

    /// checks if the registry points to a valid registry data file.
    inline bool isValid() const;

    /** returns the access mode of the registry.

        @return TRUE if the access mode is readonly else FALSE.
    */
    inline bool     isReadOnly() const;

    /** opens the root key of the registry.

        @param  rRootKey reference to a RegistryKey which is filled with the rootkey.
        @return REG_NO_ERROR if succeeds else an error code.
    */
    inline RegError openRootKey(RegistryKey& rRootKey);

    /// returns the name of the current registry data file.
    inline rtl::OUString getName();

    /** creates a new registry with the specified name and creates a root key.

        @param  registryName specifies the name of the new registry.
        @return REG_NO_ERROR if succeeds else an error code.
    */
    inline RegError create(const rtl::OUString& registryName);

    /** opens a registry with the specified name.

        If the registry already points to a valid registry, the old registry will be closed.
        @param  registryName specifies a registry name.
        @param  accessMode specifies the access mode for the registry, REG_READONLY or REG_READWRITE.
        @return REG_NO_ERROR if succeeds else an error code.
    */
    inline RegError open(const rtl::OUString& registryName,
                            RegAccessMode accessMode);

    /// closes explicitly the current registry data file.
    inline RegError close();

    /** destroys a registry.

        @param registryName specifies a registry name, if the name is an empty string the registry
                            itselfs will be destroyed.
        @return REG_NO_ERROR if succeeds else an error code.
    */
    inline RegError destroy(const rtl::OUString& registryName);

    /** loads registry information from a specified file and save it under the
        specified keyName.

        @param  rKey references a currently open key. The key which should store the registry information
                     is a subkey of this key.
        @param  keyName specifies the name of the key which stores the registry information. If keyName is
                        is an empty string the registry information will be saved under the key specified
                        by rKey.
        @param  regFileName specifies the file containing the registry information.
        @return REG_NO_ERROR if succeeds else an error code.
    */
    inline RegError loadKey(RegistryKey& rKey,
                               const rtl::OUString& keyName,
                               const rtl::OUString& regFileName);

    /** saves the registry information of the specified key and all subkeys and save
        it in the specified file.

        @param  rKey references a currently open key. The key which information is saved by this
                     function is a subkey of this key.
        @param  keyName specifies the name of the key which information should be stored.
                        If keyName is an empty string the registry information under the key specified
                        by rKey is saved in the specified file.
        @param  regFileName specifies the file containing the registry information.
        @return REG_NO_ERROR if succeeds else an error code.
    */
    inline RegError saveKey(RegistryKey& rKey,
                               const rtl::OUString& keyName,
                               const rtl::OUString& regFileName);

    /** merges the registry information of the specified key with the registry
        information of the specified file.

        All existing keys will be extended and existing key values will be overwritten.
        @param  rKey references a currently open key. The key which information is merged by this
                     function is a subkey of this key
        @param  keyName specifies the name of the key which will be merged.
                        If keyName is an empty string the registry information under the key specified
                        by rKey is merged with the information from the specified file.
        @param  regFileName specifies the file containing the registry information.
        @param  bWarnings if TRUE the function returns an error if a key already exists.
        @param  bReport if TRUE the function reports warnings on stdout if a key already exists.
        @return REG_NO_ERROR if succeeds else an error code. If it returns an error the registry will
                restore the state before merging.
    */
    inline RegError mergeKey(RegistryKey& rKey,
                                const rtl::OUString& keyName,
                                const rtl::OUString& regFileName,
                                bool bWarnings = false,
                                bool bReport = false);

    /** This function reports the complete registry information of a key and all of its subkeys.

        All information which are available (keynames, value types, values, ...)
        will be printed to stdout for report issues only.
        @param  rKey references a currently open key which content will be reported.
        @return REG_NO_ERROR if succeeds else an error code.
    */
    inline RegError dumpRegistry(RegistryKey& rKey);

    friend class RegistryKey;
    friend class RegistryKeyArray;
    friend class RegistryKeyNames;

    /// returns the used registry Api.
    const Registry_Api* getApi() { return m_pApi; }
protected:

    /// stores the used and initialized registry Api.
    const Registry_Api*                          m_pApi;
    /// stores the handle of the underlying registry file on which most of the functions work.
    RegHandle                                    m_hImpl;
};




/** RegistryKeyArray represents an array of open keys.

    RegistryKeyArray is a helper class to work with an array of keys.
*/
class RegistryKeyArray
{
public:
    /// Default constructor
    inline RegistryKeyArray();

    /// Destructor, all subkeys will be closed.
    inline ~RegistryKeyArray();

    /// returns the open key specified by index.
    inline RegistryKey getElement(sal_uInt32 index);

    /// returns the length of the array.
    inline sal_uInt32 getLength();

    friend class RegistryKey;
protected:
    /** sets the data of the key array.

        @param registry specifies the registry files where the keys are located.
        @param phKeys points to an array of open keys.
        @param length specifies the length of the array specified by phKeys.
     */
    inline void setKeyHandles(Registry& registry, RegKeyHandle* phKeys, sal_uInt32 length);
    /// close all subkeys
    inline RegError closeKeyHandles();

    /// stores the number of open subkeys, the number of elements.
    sal_uInt32      m_length;
    /// stores an array of open subkeys.
    RegKeyHandle*   m_phKeys;
    /// stores the handle to the registry file where the appropriate keys are located.
    Registry        m_registry;
};


/** RegistryKeyNames represents an array of key names.

    RegistryKeyNames is a helper class to work with an array of key names.
*/
class RegistryKeyNames
{
public:
    /// Default constructor
    inline RegistryKeyNames();

    /// Destructor, the internal array with key names will be deleted.
    inline ~RegistryKeyNames();

    /// returns the name of the key sepecified by index.
    inline rtl::OUString getElement(sal_uInt32 index);

    /// returns the length of the array.
    inline sal_uInt32 getLength();

    friend class RegistryKey;
protected:
    /** sets the data of the array.

        @param registry specifies the registry files where the keys are located.
        @param pKeyNames points to an array of key names.
        @param length specifies the length of the array specified by pKeyNames.
     */
    inline void setKeyNames(Registry& registry, rtl_uString** pKeyNames, sal_uInt32 length);
    /// delete the array of key names.
    inline RegError freeKeyNames();

    /// stores the number of key names, the number of elements.
    sal_uInt32      m_length;
    /// stores an array of key names.
    rtl_uString**   m_pKeyNames;
    /// stores the handle to the registry file where the appropriate keys are located.
    Registry        m_registry;
};



/** RegistryValueList represents a value list of the specified type.

    RegistryValueList is a helper class to work with a list value.
*/
template<class ValueType>
class RegistryValueList
{
public:
    /// Default constructor
    RegistryValueList()
        : m_length(0)
        , m_pValueList(NULL)
        , m_valueType(RG_VALUETYPE_NOT_DEFINED)
        {}

    /// Destructor, the internal value list will be freed.
    ~RegistryValueList()
    {
        if (m_pValueList)
        {
            m_registry.getApi()->freeValueList(m_valueType, m_pValueList, m_length);
        }
    }

    /// returns the value of the list specified by index.
    ValueType getElement(sal_uInt32 index)
    {
        if (m_registry.isValid() && index < m_length)
        {
            return m_pValueList[index];
        } else
        {
            return 0;
        }
    }

    /// returns the length of the list.
    sal_uInt32 getLength()
    {
        return m_length;
    }

    friend class RegistryKey;
protected:
    /** sets the data of the value list.

        @param registry specifies the registry files where the appropriate key is located.
        @param valueType specifies the type of the list values.
        @param pValueList points to a value list.
        @param length specifies the length of the list.
     */
    void setValueList(Registry& registry, RegValueType valueType,
                      ValueType* pValueList, sal_uInt32 length)
    {
        m_length = length;
        m_pValueList = pValueList;
        m_valueType = valueType;
        m_registry = registry;
    }

    /// stores the length of the list, the number of elements.
    sal_uInt32      m_length;
    /// stores the value list.
    ValueType*      m_pValueList;
    /// stores the type of the list elements
    RegValueType    m_valueType;
    /** stores the handle to the registry file where the appropriate key to this
        value is located.
    */
    Registry        m_registry;
};



/** RegistryKey reads or writes information of the underlying key in a registry.

    Class is inline and use a load on call C-Api.
*/
class RegistryKey
{
public:
    /// Default constructor
    inline RegistryKey();

    /// Copy constructor
    inline RegistryKey(const RegistryKey& toCopy);

    /// Destructor, close the key if it references an open one.
    inline ~RegistryKey();

    /// Assign operator
    inline RegistryKey& operator = (const RegistryKey& toAssign);

    /// checks if the key points to a valid registry key.
    inline bool isValid() const;

    /** returns the access mode of the key.

        @return TRUE if access mode is read only else FALSE.
    */
    inline bool     isReadOnly() const;

    /// returns the full qualified name of the key beginning with the rootkey.
    inline rtl::OUString getName();

    /** creates a new key or opens a key if the specified key already exists.

        The specified keyname is relativ to this key.
        @param  keyName specifies the name of the key which will be opened or created.
        @param  rNewKey references a RegistryKey which will be filled with the new or open key.
        @return REG_NO_ERROR if succeeds else an error code.
    */
    inline RegError createKey(const rtl::OUString& keyName,
                              RegistryKey& rNewKey);

    /** opens the specified key.

        The specified keyname is relativ to this key.
        @param  keyName specifies the name of the key which will be opened.
        @param  rOpenKey references a RegistryKey which will be filled with the open key.
        @return REG_NO_ERROR if succeeds else an error code.
    */
    inline RegError openKey(const rtl::OUString& keyName,
                              RegistryKey& rOpenKey);

    /** opens all subkeys of the specified key.

        The specified keyname is relativ to this key.
        @param  keyName specifies the name of the key which subkeys will be opened.
        @param  rSubKeys reference a RegistryKeyArray which will be filled with the open subkeys.
        @return REG_NO_ERROR if succeeds else an error code.
    */
    inline RegError openSubKeys(const rtl::OUString& keyName,
                                    RegistryKeyArray& rSubKeys);

    /** returns an array with the names of all subkeys of the specified key.

        The specified keyname is relativ to this key.
        @param  keyName specifies the name of the key which subkey names will be returned.
        @param  rSubKeyNames reference a RegistryKeyNames array which will be filled with the subkey names.
        @return REG_NO_ERROR if succeeds else an error code.
    */
    inline RegError getKeyNames(const rtl::OUString& keyName,
                                    RegistryKeyNames& rSubKeyNames);

    /** closes all keys specified in the array.

        @param  rSubKeys reference a RegistryKeyArray which contains the open keys.
        @return REG_NO_ERROR if succeeds else an error code.
    */
    inline RegError closeSubKeys(RegistryKeyArray& rSubKeys);

    /** deletes the specified key.

        @param  keyName specifies the name of the key which will be deleted.
        @return REG_NO_ERROR if succeeds else an error code.
    */
    inline RegError deleteKey(const rtl::OUString& keyName);

    /// closes explicitly the current key
    inline RegError closeKey();

    /// releases the current key
    inline void releaseKey();

    /** sets a value of a key.

        @param  keyName specifies the name of the key which value will be set.
                        If keyName is an empty string, the value will be set for the key
                        specified by hKey.
        @param  valueType specifies the type of the value.
        @param  pValue points to a memory block containing the data for the value.
        @param  valueSize specifies the size of pData in bytes
        @return REG_NO_ERROR if succeeds else an error code.
    */
    inline RegError setValue(const rtl::OUString& keyName,
                                RegValueType valueType,
                                RegValue pValue,
                                sal_uInt32 valueSize);

    /** sets a long list value of a key.

        @param  keyName specifies the name of the key which value will be set.
                        If keyName is an empty string, the value will be set for the key
                        specified by hKey.
        @param  pValueList points to an array of longs containing the data for the value.
        @param  len specifies the length of the list (the array referenced by pValueList).
        @return REG_NO_ERROR if succeeds else an error code.
    */
    inline RegError setLongListValue(const rtl::OUString& keyName,
                                         sal_Int32* pValueList,
                                         sal_uInt32 len);

    /** sets an ascii list value of a key.

        @param  keyName specifies the name of the key which value will be set.
                        If keyName is an empty string, the value will be set for the key
                        specified by hKey.
        @param  pValueList points to an array of sal_Char* containing the data for the value.
        @param  len specifies the length of the list (the array referenced by pValueList).
        @return REG_NO_ERROR if succeeds else an error code.
    */
    inline RegError setStringListValue(const rtl::OUString& keyName,
                                           sal_Char** pValueList,
                                           sal_uInt32 len);

    /** sets an unicode string list value of a key.

        @param  keyName specifies the name of the key which value will be set.
                        If keyName is an empty string, the value will be set for the key
                        specified by hKey.
        @param  pValueList points to an array of sal_Unicode* containing the data for the value.
        @param  len specifies the length of the list (the array referenced by pValueList).
        @return REG_NO_ERROR if succeeds else an error code.
    */
    inline RegError setUnicodeListValue(const rtl::OUString& keyName,
                                            sal_Unicode** pValueList,
                                              sal_uInt32 len);

    /** gets info about type and size of a value.

        @param  keyName specifies the name of the key which value info will be returned.
                        If keyName is an empty string, the value info of the key
                        specified by hKey will be returned.
        @param  pValueType returns the type of the value.
        @param  pValueSize returns the size of the value in bytes or the length of a list value.
        @return REG_NO_ERROR if succeeds else an error code.
    */
    inline RegError getValueInfo(const rtl::OUString& keyName,
                                    RegValueType* pValueType,
                                    sal_uInt32* pValueSize);

    /** gets the value of a key.

        @param  keyName specifies the name of the key which value will be returned.
                        If keyName is an empty string, the value is get from the key
                        specified by hKey.
        @param  pValue points to an allocated memory block receiving the data of the value.
        @return REG_NO_ERROR if succeeds else an error code.
    */
    inline RegError getValue(const rtl::OUString& keyName,
                                RegValue pValue);

    /** gets a long list value of a key.

        @param  keyName specifies the name of the key which value will be returned.
                        If keyName is an empty string, the value is get from the key
                        specified by hKey.
        @param  rValueList references a RegistryValueList which will be filled with the long values.
        @return REG_NO_ERROR if succeeds else an error code.
    */
    inline RegError getLongListValue(const rtl::OUString& keyName,
                                          RegistryValueList<sal_Int32>& rValueList);

    /** gets an ascii list value of a key.

        @param  keyName specifies the name of the key which value will be returned.
                        If keyName is an empty string, the value is get from the key
                        specified by hKey.
        @param  rValueList references a RegistryValueList which will be filled with the ascii values.
        @return REG_NO_ERROR if succeeds else an error code.
    */
    inline RegError getStringListValue(const rtl::OUString& keyName,
                                           RegistryValueList<sal_Char*>& rValueList);

    /** gets a unicode value of a key.

        @param  keyName specifies the name of the key which value will be returned.
                        If keyName is an empty string, the value is get from the key
                        specified by hKey.
        @param  rValueList reference a RegistryValueList which will be filled with the unicode values.
        @return REG_NO_ERROR if succeeds else an error code.
    */
    inline RegError getUnicodeListValue(const rtl::OUString& keyName,
                                              RegistryValueList<sal_Unicode*>& rValueList);

    /** used to create a link.

        @deprecated Links are no longer supported.

        @return REG_INVALID_LINK
     */
    inline RegError createLink(const rtl::OUString& linkName,
                               const rtl::OUString& linkTarget);

    /** used to delete a link.

        @deprecated Links are no longer supported.

        @return REG_INVALID_LINK
     */
    inline RegError deleteLink(const rtl::OUString& linkName);

    /** returns the type of the specified key.

        @param name specifies the name of the key or link.
        @param pKeyType returns the type of the key (always RG_KEYTYPE).
        @return REG_NO_ERROR if succeeds else an error code.
     */
    inline RegError getKeyType(const rtl::OUString& name,
                                  RegKeyType* pKeyType) const;

    /** used to return the target of a link.

        @deprecated Links are no longer supported.

        @return REG_INVALID_LINK
     */
    inline RegError getLinkTarget(const rtl::OUString& linkName,
                                    rtl::OUString& rLinkTarget) const;

    /** resolves a keyname.

        @param[in]  keyName specifies the name of the key which will be resolved relative to this key.
                        The resolved name will be prefixed with the name of this key.
        @param[in]  firstLinkOnly ignored
        @param[out] rResolvedName the resolved name.
        @return REG_NO_ERROR if succeeds else an error code.
     */
    inline RegError getResolvedKeyName(const rtl::OUString& keyName,
                                       bool firstLinkOnly,
                                           rtl::OUString& rResolvedName) const;

    /// returns the name of the registry in which the key is defined.
    inline rtl::OUString getRegistryName();

    /// returns the registry in which the key is defined.
    Registry getRegistry() const { return m_registry; }

    friend class Registry;
public:
    /// @cond INTERNAL

    /** Constructor, which initialize a RegistryKey with registry and an valid key handle.

        This constructor is internal only.
    */
    inline RegistryKey(Registry&    registry,
                       RegKeyHandle hKey);

    /** returns the internal key handle.
     */
    RegKeyHandle getKeyHandle() const { return m_hImpl; }

protected:
    /** sets the internal registry on which this key should work.
     */
    inline void setRegistry(Registry& registry);

    /// @endcond

    /// stores the registry on which this key works
    Registry        m_registry;
    /// stores the current key handle of this key
    RegKeyHandle    m_hImpl;
};




inline RegistryKeyArray::RegistryKeyArray()
    : m_length(0)
    , m_phKeys(NULL)
{
}

inline RegistryKeyArray::~RegistryKeyArray()
{
    if (m_phKeys)
        m_registry.m_pApi->closeSubKeys(m_phKeys, m_length);
}

inline RegistryKey RegistryKeyArray::getElement(sal_uInt32 index)
{
    if (m_registry.isValid() && index < m_length)
        return RegistryKey(m_registry, m_phKeys[index]);
    else
        return RegistryKey();
}

inline sal_uInt32 RegistryKeyArray::getLength()
{
    return m_length;
}

inline void RegistryKeyArray::setKeyHandles(Registry& registry,
                                            RegKeyHandle* phKeys,
                                            sal_uInt32 length)
{
    m_phKeys = phKeys;
    m_length = length;
    m_registry = registry;
}

inline RegError RegistryKeyArray::closeKeyHandles()
{
    if (m_registry.isValid() && m_phKeys)
    {
        RegError ret;
        ret = m_registry.m_pApi->closeSubKeys(m_phKeys, m_length);
        m_registry = Registry();
        m_length = 0;
        m_phKeys = NULL;
        return ret;
    } else
        return(REG_INVALID_KEY);
}



inline RegistryKeyNames::RegistryKeyNames()
    : m_length(0)
    , m_pKeyNames(NULL)
{
}

inline RegistryKeyNames::~RegistryKeyNames()
{
    if (m_pKeyNames)
        m_registry.m_pApi->freeKeyNames(m_pKeyNames, m_length);
}

inline rtl::OUString RegistryKeyNames::getElement(sal_uInt32 index)
{

    if (m_pKeyNames && index < m_length)
        return m_pKeyNames[index];
    else
        return rtl::OUString();
}

inline sal_uInt32 RegistryKeyNames::getLength()
{
    return m_length;
}

inline void RegistryKeyNames::setKeyNames(Registry& registry,
                                          rtl_uString** pKeyNames,
                                          sal_uInt32 length)
{
    m_pKeyNames = pKeyNames;
    m_length = length;
    m_registry = registry;
}

inline RegError RegistryKeyNames::freeKeyNames()
{
    if (m_registry.isValid() && m_pKeyNames)
    {
        RegError ret = REG_NO_ERROR;
        ret = m_registry.m_pApi->freeKeyNames(m_pKeyNames, m_length);
        m_registry = Registry();
        m_length = 0;
        m_pKeyNames = NULL;
        return ret;
    } else
        return REG_INVALID_KEY;
}



inline RegistryKey::RegistryKey()
    : m_hImpl(NULL)
    { }

/// @cond INTERNAL
inline RegistryKey::RegistryKey(Registry& registry, RegKeyHandle hKey)
    : m_registry(registry)
    , m_hImpl(hKey)
    {
        if (m_hImpl)
            m_registry.m_pApi->acquireKey(m_hImpl);
    }
/// @endcond

inline RegistryKey::RegistryKey(const RegistryKey& toCopy)
    : m_registry(toCopy.m_registry)
    , m_hImpl(toCopy.m_hImpl)
    {
        if (m_hImpl)
            m_registry.m_pApi->acquireKey(m_hImpl);
    }

/// @cond INTERNAL
inline void RegistryKey::setRegistry(Registry& registry)
    {
        m_registry = registry;
    }
/// @endcond

inline RegistryKey::~RegistryKey()
    {
        if (m_hImpl)
            m_registry.m_pApi->releaseKey(m_hImpl);
    }

inline RegistryKey& RegistryKey::operator = (const RegistryKey& toAssign)
{
    m_registry = toAssign.m_registry;

    if (toAssign.m_hImpl)
        m_registry.m_pApi->acquireKey(toAssign.m_hImpl);
    if (m_hImpl)
        m_registry.m_pApi->releaseKey(m_hImpl);
    m_hImpl = toAssign.m_hImpl;

    return *this;
}

inline bool RegistryKey::isValid() const
    {  return (m_hImpl != NULL); }

inline bool RegistryKey::isReadOnly() const
    {
        if  (m_registry.isValid())
            return (m_registry.m_pApi)->isKeyReadOnly(m_hImpl);
        else
            return false;
    }

inline rtl::OUString RegistryKey::getName()
    {
        rtl::OUString sRet;
        if (m_registry.isValid())
            m_registry.m_pApi->getKeyName(m_hImpl, &sRet.pData);
        return sRet;
    }

inline RegError RegistryKey::createKey(const rtl::OUString& keyName,
                                          RegistryKey& rNewKey)
    {
        if (rNewKey.isValid()) rNewKey.closeKey();
        if (m_registry.isValid())
        {
            RegError ret = m_registry.m_pApi->createKey(m_hImpl, keyName.pData, &rNewKey.m_hImpl);
            if (!ret) rNewKey.setRegistry(m_registry);
            return ret;
        } else
            return REG_INVALID_KEY;
    }

inline RegError RegistryKey::openKey(const rtl::OUString& keyName,
                                     RegistryKey& rOpenKey)
    {
        if (rOpenKey.isValid()) rOpenKey.closeKey();
        if (m_registry.isValid())
        {
            RegError ret = m_registry.m_pApi->openKey(m_hImpl, keyName.pData,
                                                    &rOpenKey.m_hImpl);
            if (!ret) rOpenKey.setRegistry(m_registry);
            return ret;
        } else
            return REG_INVALID_KEY;
    }

inline RegError RegistryKey::openSubKeys(const rtl::OUString& keyName,
                                         RegistryKeyArray& rSubKeys)
    {
        if (m_registry.isValid())
        {
            RegError        ret = REG_NO_ERROR;
            RegKeyHandle*   pSubKeys;
            sal_uInt32      nSubKeys;
             ret = m_registry.m_pApi->openSubKeys(m_hImpl, keyName.pData,
                                                      &pSubKeys, &nSubKeys);
             if ( ret )
            {
                return ret;
            } else
            {
                rSubKeys.setKeyHandles(m_registry, pSubKeys, nSubKeys);
                return ret;
            }
        } else
            return REG_INVALID_KEY;
    }

inline RegError RegistryKey::getKeyNames(const rtl::OUString& keyName,
                                             RegistryKeyNames& rSubKeyNames)
    {
        if (m_registry.isValid())
        {
            RegError        ret = REG_NO_ERROR;
            rtl_uString**   pSubKeyNames;
            sal_uInt32      nSubKeys;
             ret = m_registry.m_pApi->getKeyNames(m_hImpl, keyName.pData,
                                                  &pSubKeyNames, &nSubKeys);
             if ( ret )
            {
                return ret;
            } else
            {
                rSubKeyNames.setKeyNames(m_registry, pSubKeyNames, nSubKeys);
                return ret;
            }
        } else
            return REG_INVALID_KEY;
    }

inline RegError RegistryKey::closeSubKeys(RegistryKeyArray& rSubKeys)
    {
        if (m_registry.isValid())
            return rSubKeys.closeKeyHandles();
        else
            return REG_INVALID_KEY;
    }

inline RegError RegistryKey::deleteKey(const rtl::OUString& keyName)
    {
        if (m_registry.isValid())
            return m_registry.m_pApi->deleteKey(m_hImpl, keyName.pData);
        else
            return REG_INVALID_KEY;
    }

inline RegError RegistryKey::closeKey()
    {
        if (m_registry.isValid())
        {
            RegError ret = m_registry.m_pApi->closeKey(m_hImpl);
            if (!ret)
            {
                m_hImpl = NULL;
                m_registry = Registry();
            }
            return ret;
        } else
            return REG_INVALID_KEY;
    }

inline void RegistryKey::releaseKey()
{
    if (m_registry.isValid() && (m_hImpl != 0))
    {
        m_registry.m_pApi->releaseKey(m_hImpl), m_hImpl = 0;
    }
}

inline RegError RegistryKey::setValue(const rtl::OUString& keyName,
                                              RegValueType valueType,
                                           RegValue pValue,
                                              sal_uInt32 valueSize)
    {
        if (m_registry.isValid())
            return m_registry.m_pApi->setValue(m_hImpl, keyName.pData, valueType,
                                                pValue, valueSize);
        else
            return REG_INVALID_KEY;
    }

inline RegError RegistryKey::setLongListValue(const rtl::OUString& keyName,
                                                  sal_Int32* pValueList,
                                                  sal_uInt32 len)
    {
        if (m_registry.isValid())
            return m_registry.m_pApi->setLongListValue(m_hImpl, keyName.pData,
                                                           pValueList, len);
        else
            return REG_INVALID_KEY;
    }

inline RegError RegistryKey::setStringListValue(const rtl::OUString& keyName,
                                                   sal_Char** pValueList,
                                                   sal_uInt32 len)
    {
        if (m_registry.isValid())
            return m_registry.m_pApi->setStringListValue(m_hImpl, keyName.pData,
                                                            pValueList, len);
        else
            return REG_INVALID_KEY;
    }

inline RegError RegistryKey::setUnicodeListValue(const rtl::OUString& keyName,
                                                        sal_Unicode** pValueList,
                                                        sal_uInt32 len)
    {
        if (m_registry.isValid())
            return m_registry.m_pApi->setUnicodeListValue(m_hImpl, keyName.pData,
                                                              pValueList, len);
        else
            return REG_INVALID_KEY;
    }

inline RegError RegistryKey::getValueInfo(const rtl::OUString& keyName,
                                                  RegValueType* pValueType,
                                                  sal_uInt32* pValueSize)
    {
        if (m_registry.isValid())
            return m_registry.m_pApi->getValueInfo(m_hImpl, keyName.pData, pValueType, pValueSize);
        else
            return REG_INVALID_KEY;
    }

inline RegError RegistryKey::getValue(const rtl::OUString& keyName,
                                        RegValue pValue)
    {
        if (m_registry.isValid())
            return m_registry.m_pApi->getValue(m_hImpl, keyName.pData, pValue);
        else
            return REG_INVALID_KEY;
    }

inline RegError RegistryKey::getLongListValue(const rtl::OUString& keyName,
                                              RegistryValueList<sal_Int32>& rValueList)
    {
        if (m_registry.isValid())
        {
            RegError    ret = REG_NO_ERROR;
            sal_Int32*  pValueList;
            sal_uInt32  length;
             ret = m_registry.m_pApi->getLongListValue(m_hImpl, keyName.pData,
                                                      &pValueList, &length);
             if ( ret )
            {
                return ret;
            } else
            {
                rValueList.setValueList(m_registry, RG_VALUETYPE_LONGLIST,
                                        pValueList, length);
                return ret;
            }
        } else
            return REG_INVALID_KEY;
    }

inline RegError RegistryKey::getStringListValue(const rtl::OUString& keyName,
                                                      RegistryValueList<sal_Char*>& rValueList)
    {
        if (m_registry.isValid())
        {
            RegError    ret = REG_NO_ERROR;
            sal_Char**  pValueList;
            sal_uInt32  length;
             ret = m_registry.m_pApi->getStringListValue(m_hImpl, keyName.pData,
                                                      &pValueList, &length);
             if ( ret )
            {
                return ret;
            } else
            {
                rValueList.setValueList(m_registry, RG_VALUETYPE_STRINGLIST,
                                        pValueList, length);
                return ret;
            }
        } else
            return REG_INVALID_KEY;
    }

inline RegError RegistryKey::getUnicodeListValue(const rtl::OUString& keyName,
                                              RegistryValueList<sal_Unicode*>& rValueList)
    {
        if (m_registry.isValid())
        {
            RegError        ret = REG_NO_ERROR;
            sal_Unicode**   pValueList;
            sal_uInt32      length;
             ret = m_registry.m_pApi->getUnicodeListValue(m_hImpl, keyName.pData,
                                                      &pValueList, &length);
             if ( ret )
            {
                return ret;
            } else
            {
                rValueList.setValueList(m_registry, RG_VALUETYPE_UNICODELIST,
                                        pValueList, length);
                return ret;
            }
        } else
            return REG_INVALID_KEY;
    }

inline RegError RegistryKey::createLink(const rtl::OUString& linkName,
                                           const rtl::OUString& linkTarget)
    {
        if (m_registry.isValid())
            return m_registry.m_pApi->createLink(m_hImpl, linkName.pData, linkTarget.pData);
        else
            return REG_INVALID_KEY;
    }

inline RegError RegistryKey::deleteLink(const rtl::OUString& linkName)
    {
        if (m_registry.isValid())
            return m_registry.m_pApi->deleteLink(m_hImpl, linkName.pData);
        else
            return REG_INVALID_KEY;
    }

inline RegError RegistryKey::getKeyType(const rtl::OUString& keyName,
                                              RegKeyType* pKeyType) const
    {
        if (m_registry.isValid())
            return m_registry.m_pApi->getKeyType(m_hImpl, keyName.pData, pKeyType);
        else
            return REG_INVALID_KEY;
    }

inline RegError RegistryKey::getLinkTarget(const rtl::OUString& linkName,
                                               rtl::OUString& rLinkTarget) const
    {
        if (m_registry.isValid())
        {
            return m_registry.m_pApi->getLinkTarget(m_hImpl,
                                                    linkName.pData,
                                                    &rLinkTarget.pData);
        } else
            return REG_INVALID_KEY;
    }


inline RegError RegistryKey::getResolvedKeyName(const rtl::OUString& keyName,
                                                bool firstLinkOnly,
                                                       rtl::OUString& rResolvedName) const
    {
        if (m_registry.isValid())
            return m_registry.m_pApi->getResolvedKeyName(m_hImpl,
                                                         keyName.pData,
                                                         firstLinkOnly,
                                                         &rResolvedName.pData);
        else
            return REG_INVALID_KEY;
    }

inline rtl::OUString RegistryKey::getRegistryName()
    {
        if (m_registry.isValid())
        {
            return m_registry.getName();
        } else
            return rtl::OUString();
    }



inline Registry::Registry()
    : m_pApi(initRegistry_Api())
    , m_hImpl(NULL)
    { }

inline Registry::Registry(const Registry& toCopy)
    : m_pApi(toCopy.m_pApi)
    , m_hImpl(toCopy.m_hImpl)
    {
        if (m_hImpl)
            m_pApi->acquire(m_hImpl);
    }


inline Registry::~Registry()
    {
        if (m_hImpl)
            m_pApi->release(m_hImpl);
    }

inline Registry& Registry::operator = (const Registry& toAssign)
{
    if (toAssign.m_hImpl)
        toAssign.m_pApi->acquire(toAssign.m_hImpl);
    if (m_hImpl)
        m_pApi->release(m_hImpl);

    m_pApi  = toAssign.m_pApi;
    m_hImpl = toAssign.m_hImpl;

    return *this;
}

inline bool Registry::isValid() const
    {  return ( m_hImpl != NULL ); }

inline bool Registry::isReadOnly() const
    {  return m_pApi->isReadOnly(m_hImpl); }

inline RegError Registry::openRootKey(RegistryKey& rRootKey)
    {
        rRootKey.setRegistry(*this);
        return m_pApi->openRootKey(m_hImpl, &rRootKey.m_hImpl);
    }

inline rtl::OUString Registry::getName()
    {
        rtl::OUString sRet;
        m_pApi->getName(m_hImpl, &sRet.pData);
        return sRet;
    }

inline RegError Registry::create(const rtl::OUString& registryName)
    {
        if (m_hImpl)
            m_pApi->release(m_hImpl);
        return m_pApi->createRegistry(registryName.pData, &m_hImpl);
    }

inline RegError Registry::open(const rtl::OUString& registryName,
                                  RegAccessMode accessMode)
    {
        if (m_hImpl)
            m_pApi->release(m_hImpl);
        return m_pApi->openRegistry(registryName.pData, &m_hImpl, accessMode);
    }

inline RegError Registry::close()
    {
        RegError ret = m_pApi->closeRegistry(m_hImpl);
        if (!ret)
            m_hImpl = NULL;
        return ret;
    }

inline RegError Registry::destroy(const rtl::OUString& registryName)
    {
        RegError ret = m_pApi->destroyRegistry(m_hImpl, registryName.pData);
        if ( !ret && registryName.isEmpty() )
            m_hImpl = NULL;
        return ret;
    }

inline RegError Registry::loadKey(RegistryKey& rKey,
                                      const rtl::OUString& keyName,
                                      const rtl::OUString& regFileName)
    {  return m_pApi->loadKey(m_hImpl, rKey.m_hImpl, keyName.pData, regFileName.pData); }

inline RegError Registry::saveKey(RegistryKey& rKey,
                                     const rtl::OUString& keyName,
                                     const rtl::OUString& regFileName)
    {  return m_pApi->saveKey(m_hImpl, rKey.m_hImpl, keyName.pData, regFileName.pData); }

inline RegError Registry::mergeKey(RegistryKey& rKey,
                                         const rtl::OUString& keyName,
                                         const rtl::OUString& regFileName,
                                         bool bWarnings,
                                         bool bReport)
    {  return m_pApi->mergeKey(m_hImpl, rKey.m_hImpl, keyName.pData, regFileName.pData, bWarnings, bReport); }

inline RegError Registry::dumpRegistry(RegistryKey& rKey)
    {  return m_pApi->dumpRegistry(m_hImpl, rKey.m_hImpl); }


#endif

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