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/*
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* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of the License "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:
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*
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*/
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#include <e32std.h>
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#include "DictionaryContext.h"
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#include "cxml_internal.h"
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#include "FeatMgr.h"
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#include <xml/cxml/nw_wbxml_dictionary.h>
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/* There is possibility that dictionary initialize is called by the embedded
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* application also. To make allocation/deallocation of dictionary possible.
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* The NW_CONTEXT_REF_DICT_CNT variable is added. This variable of TLS context
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* will keep the reference count of the number of times dictionary
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* inialization/destroy is called.
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*
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* The dictionary is destroyed when NW_CONTEXT_REF_DICT_CNT is zero.
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*
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*/
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typedef enum {
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NW_CONTEXT_DICTIONARY = 0,
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NW_CONTEXT_DICTIONARY_COUNT = 1,
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NW_CONTEXT_REF_DICT_CNT = 2, /*Number of times dictionary rerferenced*/
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NW_CONTEXT_NUM_ENTRIES = 3
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} NW_DictionaryContext_Id_t;
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typedef struct {
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NW_Uint16 numContexts;
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void *contexts[NW_CONTEXT_NUM_ENTRIES];
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} NW_DictionaryContext_Array_t;
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/*****************************************************************
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Name: NW_Ctx_Init()
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Description: Initialize the context manager
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Parameters:
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Return Value: NW_STAT_SUCCESS or NW_STAT_OUT_OF_MEMORY
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******************************************************************/
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static NW_Status_t DictContext_Init()
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{
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NW_DictionaryContext_Array_t* contextArray;
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NW_Uint32 i;
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/*lint --e{429} Custodial pointer has not been freed or returned */
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/* Initialize the context manager once, and only once! */
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if (Dll::Tls() == NULL) {
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/* Allocate and init array to hold context pointers */
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contextArray = new NW_DictionaryContext_Array_t;
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/*lint -e{774} Boolean within 'if' always evaluates to False */
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if (contextArray == NULL) {
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DestroyDictionaries();
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return NW_STAT_OUT_OF_MEMORY;
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}
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contextArray->numContexts = NW_CONTEXT_NUM_ENTRIES;
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for (i = 0; i < NW_CONTEXT_NUM_ENTRIES; i++) {
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contextArray->contexts[i] = NULL;
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}
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/* Store the pointer to the context array */
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if( Dll::SetTls( contextArray ) != KErrNone)
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{
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DestroyDictionaries();
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}
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}
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return NW_STAT_SUCCESS;
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}
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/*****************************************************************
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Name: NW_Ctx_Set()
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Description: Set the context for the specified component
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Parameters: component - which context
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*ctx - pointer to the context to store
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Return Value: NW_STAT_SUCCESS or NW_STAT_FAILURE
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******************************************************************/
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NW_Status_t DictContext_Set(const NW_DictionaryContext_Id_t aContextId,
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void *ctx)
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{
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NW_Status_t status = NW_STAT_SUCCESS;
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NW_DictionaryContext_Array_t* contextArray;
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NW_ASSERT(aContextId < NW_CONTEXT_NUM_ENTRIES);
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/* Get the pointer to the context array */
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contextArray = (NW_DictionaryContext_Array_t*)Dll::Tls();
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if (contextArray == NULL) {
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status = DictContext_Init();
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if (status != NW_STAT_SUCCESS) {
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return status;
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}
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contextArray = (NW_DictionaryContext_Array_t*)Dll::Tls();
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}
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/* Save the aContextId's context */
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if (contextArray != NULL) {
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/*lint -e{661} Possible access of out-of-bounds pointer */
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contextArray->contexts[aContextId] = ctx;
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return NW_STAT_SUCCESS;
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}
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return status;
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}
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/*****************************************************************
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Name: DictContext_Get()
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Description: Get the context for the specified component
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Parameters: aContextId - which context
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Return Value: pointer to the component's context or NULL
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******************************************************************/
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void *DictContext_Get(const NW_DictionaryContext_Id_t aContextId)
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{
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NW_Status_t status;
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NW_DictionaryContext_Array_t* contextArray;
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/* Use "<=" rather than "<", as PushMtm tests last item for NULL */
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NW_ASSERT(aContextId <= NW_CONTEXT_NUM_ENTRIES);
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/* Get the pointer to the context array */
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contextArray = (NW_DictionaryContext_Array_t*)Dll::Tls();
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if (contextArray == NULL) {
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status = DictContext_Init();
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if (status != NW_STAT_SUCCESS) {
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return NULL;
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}
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contextArray = (NW_DictionaryContext_Array_t*)Dll::Tls();
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}
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/* Return the component's context */
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if (contextArray != NULL) {
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/*lint --e{661} Possible access of out-of-bounds pointer */
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/*lint --e{662} Possible creation of out-of-bounds pointer */
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return contextArray->contexts[aContextId];
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}
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return NULL;
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}
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void DestroyDictionaries()
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{
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NW_DictionaryContext_Array_t* contextArray = (NW_DictionaryContext_Array_t*)Dll::Tls();
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if(contextArray)
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{
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/*Check the dictionary reference count. If it is zero
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* then free the dictionary.
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*/
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if(contextArray->contexts[NW_CONTEXT_REF_DICT_CNT] == 0)
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{
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NW_WBXML_Dictionary_t **dictionaries = GetDictionaries();
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NW_Mem_Free(dictionaries);
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StoreDictionaries(NULL);
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StoreDictionaryCount(0);
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// Get the TLS pointer
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delete contextArray;
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contextArray = NULL;
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Dll::SetTls(contextArray);
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}
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}/*end if(contextArray)*/
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}
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/* Temporary methods for storing dictionary & dictionary size inside the context.
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*/
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void StoreDictionaries(NW_WBXML_Dictionary_t** dictionaries)
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{
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DictContext_Set(NW_CONTEXT_DICTIONARY, (void*)dictionaries);
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}
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NW_WBXML_Dictionary_t** GetDictionaries()
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{
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return (NW_WBXML_Dictionary_t**)DictContext_Get(NW_CONTEXT_DICTIONARY);
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}
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void StoreDictionaryCount(NW_Uint32 dictionary_count)
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{
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DictContext_Set(NW_CONTEXT_DICTIONARY_COUNT, (void*)dictionary_count);
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}
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NW_Uint32 GetDictionaryCount()
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{
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NW_Uint32 count = (NW_Uint32)DictContext_Get(NW_CONTEXT_DICTIONARY_COUNT);
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return count;
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}
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void UpdateDictRefCnt(CXML_DICT_REF_CNT updateVal)
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{
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NW_DictionaryContext_Array_t* contextArray;
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NW_Uint32 refCount = 0;
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/* Get the pointer to the context array */
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contextArray = (NW_DictionaryContext_Array_t*)Dll::Tls();
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if(contextArray != NULL)
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{
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refCount = (NW_Uint32) contextArray->contexts[NW_CONTEXT_REF_DICT_CNT];
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if(updateVal == NW_CONTEXT_REF_DICT_CNT_INR)
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{
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contextArray->contexts[NW_CONTEXT_REF_DICT_CNT] =
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(void*)++refCount;
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}
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else if(updateVal == NW_CONTEXT_REF_DICT_CNT_DCR)
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{
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contextArray->contexts[NW_CONTEXT_REF_DICT_CNT] =
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(void*)--refCount;
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}
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}/*end if(contextArray != NULL)*/
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return;
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}/*end UpdateDictRefCnt(CXML_DICT_REF_CNT updateVal)*/
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//
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//For Non DTD element support and checking for other features in the release
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//
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EXPORT_C
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CXML_Int32 CXML_Additional_Feature_Supprted()
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{
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CXML_Int32 featureFlag = 0;
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featureFlag |= CXML_DTD_SUPPORT_ON;
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/* The feature manager not supported. May be hook up for future use.
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CXML_Bool retVal = CXML_TRUE;
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FeatureManager::InitializeLibL();
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if(FeatureManager::FeatureSupported(KFeatureIdEcmaScript) )
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{
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retVal = CXML_TRUE;
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}
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else
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{
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retVal = CXML_FALSE;
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}
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retVal = CXML_TRUE;
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return retVal;
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*/
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return featureFlag;
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}//end CXML_Non_DTD_supprted()
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