322 lines
8.2 KiB
C++
322 lines
8.2 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include "rtl/locale.h"
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#include "osl/diagnose.h"
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#include "rtl/alloc.h"
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#include "internal/rtllifecycle.h"
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static sal_Int32 RTL_HASHTABLE_SIZE[] =
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{
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7, 31, 127, 251, 509, 1021, 2039, 4093
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};
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struct RTL_HASHENTRY
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{
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rtl_Locale* Entry;
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RTL_HASHENTRY* Next;
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};
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struct RTL_HASHTABLE
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{
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sal_Int8 iSize;
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sal_Int32 Size;
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sal_Int32 Elements;
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RTL_HASHENTRY** Table;
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};
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static RTL_HASHTABLE* g_pLocaleTable = NULL;
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static rtl_Locale* g_pDefaultLocale = NULL;
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/*************************************************************************
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*/
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extern "C" void rtl_hashentry_destroy(RTL_HASHENTRY* entry)
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{
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rtl_uString_release(entry->Entry->Language);
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rtl_uString_release(entry->Entry->Country);
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rtl_uString_release(entry->Entry->Variant);
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if (entry->Next)
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rtl_hashentry_destroy(entry->Next);
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rtl_freeMemory(entry->Entry);
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rtl_freeMemory(entry);
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}
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extern "C" void rtl_hashtable_destroy(RTL_HASHTABLE* table)
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{
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sal_Int32 size = 0;
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if (!table)
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return;
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size = table->Size;
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while (size)
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{
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if (table->Table[size - 1])
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rtl_hashentry_destroy(table->Table[size - 1]);
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size--;
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}
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rtl_freeMemory(table->Table);
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rtl_freeMemory(table);
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}
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extern "C" void rtl_hashtable_init(RTL_HASHTABLE** table, sal_Int8 sizeIndex)
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{
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sal_Int32 nSize = RTL_HASHTABLE_SIZE[sizeIndex];
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if (*table)
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rtl_hashtable_destroy(*table);
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*table = (RTL_HASHTABLE*)rtl_allocateMemory( sizeof(RTL_HASHTABLE) );
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(*table)->iSize = sizeIndex;
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(*table)->Size = nSize;
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(*table)->Elements = 0;
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(*table)->Table = (RTL_HASHENTRY**)rtl_allocateMemory( (*table)->Size * sizeof(RTL_HASHENTRY*) );
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while (nSize)
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{
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(*table)->Table[nSize - 1] = NULL;
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nSize--;
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}
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}
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extern "C" sal_Int32 rtl_hashfunc(RTL_HASHTABLE* table, sal_Int32 key)
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{
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return ( (sal_uInt32) key % table->Size);
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}
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extern "C" sal_Bool rtl_hashtable_grow(RTL_HASHTABLE** table);
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extern "C" rtl_Locale* rtl_hashtable_add(RTL_HASHTABLE** table, rtl_Locale* value)
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{
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sal_Int32 key = 0;
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if (!(*table))
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return NULL;
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if ((*table)->Elements > ((*table)->Size / 2))
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rtl_hashtable_grow(table);
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key = rtl_hashfunc(*table, value->HashCode);
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RTL_HASHENTRY **pEntry = &(*table)->Table[key];
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while (*pEntry)
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{
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if (value->HashCode == (*pEntry)->Entry->HashCode)
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return (*pEntry)->Entry;
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pEntry = &(*pEntry)->Next;
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}
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RTL_HASHENTRY *newEntry = (RTL_HASHENTRY*)rtl_allocateMemory( sizeof(RTL_HASHENTRY) );
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newEntry->Entry = value;
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newEntry->Next = NULL;
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*pEntry = newEntry;
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(*table)->Elements++;
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return NULL;
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}
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sal_Bool rtl_hashtable_grow(RTL_HASHTABLE** table)
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{
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RTL_HASHTABLE* pNewTable = NULL;
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sal_Int32 i = 0;
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rtl_hashtable_init(&pNewTable, (sal_Int8)((*table)->iSize + 1));
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while (i < (*table)->Size)
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{
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if ((*table)->Table[i])
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{
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RTL_HASHENTRY *pNext;
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RTL_HASHENTRY *pEntry = (*table)->Table[i];
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rtl_hashtable_add(&pNewTable, pEntry->Entry);
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while (pEntry->Next)
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{
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rtl_hashtable_add(&pNewTable, pEntry->Next->Entry);
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pNext = pEntry->Next;
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rtl_freeMemory(pEntry);
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pEntry = pNext;
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}
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rtl_freeMemory(pEntry);
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}
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i++;
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}
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rtl_freeMemory((*table)->Table);
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rtl_freeMemory((*table));
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(*table) = pNewTable;
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return sal_True;
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}
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extern "C" sal_Bool rtl_hashtable_find(RTL_HASHTABLE * table, sal_Int32 key, sal_Int32 hashCode, rtl_Locale** pValue)
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{
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if (!table)
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return sal_False;
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if (table->Table[key])
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{
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RTL_HASHENTRY *pEntry = table->Table[key];
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while (pEntry && hashCode != pEntry->Entry->HashCode)
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pEntry = pEntry->Next;
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if (pEntry)
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*pValue = pEntry->Entry;
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else
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return sal_False;
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} else
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return sal_False;
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return sal_True;
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}
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/*************************************************************************
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* rtl_locale_init
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*/
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void rtl_locale_init()
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{
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OSL_ASSERT(g_pLocaleTable == 0);
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rtl_hashtable_init(&g_pLocaleTable, 1);
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}
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/*************************************************************************
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* rtl_locale_fini
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*/
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void rtl_locale_fini()
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{
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if (g_pLocaleTable != 0)
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{
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rtl_hashtable_destroy (g_pLocaleTable);
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g_pLocaleTable = 0;
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}
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}
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/*************************************************************************
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* rtl_locale_register
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*/
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rtl_Locale * SAL_CALL rtl_locale_register( const sal_Unicode * language, const sal_Unicode * country, const sal_Unicode * variant )
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{
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sal_Unicode c = 0;
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rtl_uString* sLanguage = NULL;
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rtl_uString* sCountry = NULL;
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rtl_uString* sVariant = NULL;
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rtl_Locale *newLocale = NULL;
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sal_Int32 hashCode = -1;
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sal_Int32 key = 0;
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if ( !country )
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country = &c;
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if ( !variant )
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variant = &c;
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ensureLocaleSingleton();
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if (!g_pLocaleTable)
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return NULL;
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hashCode = rtl_ustr_hashCode(language) ^ rtl_ustr_hashCode(country) ^ rtl_ustr_hashCode(variant);
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key = rtl_hashfunc(g_pLocaleTable, hashCode);
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if (rtl_hashtable_find(g_pLocaleTable, key, hashCode, &newLocale))
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return newLocale;
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rtl_uString_newFromStr(&sLanguage, language);
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rtl_uString_newFromStr(&sCountry, country);
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rtl_uString_newFromStr(&sVariant, variant);
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newLocale = (rtl_Locale*)rtl_allocateMemory( sizeof(rtl_Locale) );
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newLocale->Language = sLanguage;
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newLocale->Country = sCountry;
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newLocale->Variant = sVariant;
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newLocale->HashCode = hashCode;
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rtl_hashtable_add(&g_pLocaleTable, newLocale);
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return newLocale;
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}
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/*************************************************************************
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* rtl_locale_getDefault
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*/
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rtl_Locale * SAL_CALL rtl_locale_getDefault()
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{
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return g_pDefaultLocale;
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}
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/*************************************************************************
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* rtl_locale_setDefault
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*/
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void SAL_CALL rtl_locale_setDefault( const sal_Unicode * language, const sal_Unicode * country, const sal_Unicode * variant )
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{
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g_pDefaultLocale = rtl_locale_register(language, country, variant);
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}
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/*************************************************************************
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* rtl_locale_getLanguage
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*/
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rtl_uString * SAL_CALL rtl_locale_getLanguage( rtl_Locale * This )
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{
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rtl_uString_acquire(This->Language);
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return This->Language;
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}
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/*************************************************************************
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* rtl_locale_getCountry
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*/
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rtl_uString * SAL_CALL rtl_locale_getCountry( rtl_Locale * This )
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{
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rtl_uString_acquire(This->Country);
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return This->Country;
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}
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/*************************************************************************
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* rtl_locale_getVariant
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*/
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rtl_uString * SAL_CALL rtl_locale_getVariant( rtl_Locale * This )
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{
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rtl_uString_acquire(This->Variant);
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return This->Variant;
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}
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/*************************************************************************
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* rtl_locale_hashCode
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*/
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sal_Int32 SAL_CALL rtl_locale_hashCode( rtl_Locale * This )
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{
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return This->HashCode;
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}
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/*************************************************************************
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* rtl_locale_equals
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*/
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sal_Int32 SAL_CALL rtl_locale_equals( rtl_Locale * This, rtl_Locale * obj )
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{
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return This == obj;
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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