summaryrefslogtreecommitdiff
path: root/sal/rtl/locale.cxx
blob: b6b5ee499141451ed120ea9c9612531c11d1f9bd (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
/* -*- 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 .
 */

#include <rtl/locale.h>

#include <osl/diagnose.h>
#include <rtl/alloc.h>

#include <rtllifecycle.h>

static const sal_Int32 RTL_HASHTABLE_SIZE[] =
{
    7, 31, 127, 251, 509, 1021, 2039, 4093
};

struct RTL_HASHENTRY
{
    rtl_Locale* Entry;
    RTL_HASHENTRY* Next;
};

struct RTL_HASHTABLE
{
    sal_Int8        iSize;
    sal_Int32       Size;
    sal_Int32       Elements;
    RTL_HASHENTRY** Table;
};

static RTL_HASHTABLE* g_pLocaleTable = nullptr;

static rtl_Locale* g_pDefaultLocale = nullptr;

extern "C" void rtl_hashentry_destroy(RTL_HASHENTRY* entry)
{
    rtl_uString_release(entry->Entry->Language);
    rtl_uString_release(entry->Entry->Country);
    rtl_uString_release(entry->Entry->Variant);

    if (entry->Next)
        rtl_hashentry_destroy(entry->Next);

    rtl_freeMemory(entry->Entry);
    rtl_freeMemory(entry);
}

extern "C" void rtl_hashtable_destroy(RTL_HASHTABLE* table)
{
    sal_Int32 size = 0;

    if (!table)
        return;

    size = table->Size;

    while (size)
    {
        if (table->Table[size - 1])
            rtl_hashentry_destroy(table->Table[size - 1]);

        size--;
    }

    rtl_freeMemory(table->Table);
    rtl_freeMemory(table);
}

extern "C" void rtl_hashtable_init(RTL_HASHTABLE** table, sal_Int8 sizeIndex)
{
    sal_Int32 nSize = RTL_HASHTABLE_SIZE[sizeIndex];

    if (*table)
        rtl_hashtable_destroy(*table);

    *table = static_cast< RTL_HASHTABLE* >(rtl_allocateMemory(sizeof(RTL_HASHTABLE)));

    (*table)->iSize = sizeIndex;
    (*table)->Size = nSize;
    (*table)->Elements = 0;
    (*table)->Table = static_cast< RTL_HASHENTRY** >(rtl_allocateMemory((*table)->Size * sizeof(RTL_HASHENTRY*)));

    while (nSize)
    {
        (*table)->Table[nSize - 1] = nullptr;
        nSize--;
    }
}

extern "C" sal_Int32 rtl_hashfunc(RTL_HASHTABLE* table, sal_Int32 key)
{
    return (static_cast<sal_uInt32>(key) % table->Size);
}

extern "C" sal_Bool rtl_hashtable_grow(RTL_HASHTABLE** table);

extern "C" rtl_Locale* rtl_hashtable_add(RTL_HASHTABLE** table, rtl_Locale* value)
{
    sal_Int32 key = 0;

    if (!(*table))
        return nullptr;

    if ((*table)->Elements > ((*table)->Size / 2))
        rtl_hashtable_grow(table);

    key = rtl_hashfunc(*table, value->HashCode);

    RTL_HASHENTRY **pEntry = &(*table)->Table[key];
    while (*pEntry)
    {
        if (value->HashCode == (*pEntry)->Entry->HashCode)
            return (*pEntry)->Entry;

        pEntry = &(*pEntry)->Next;
    }

    RTL_HASHENTRY *newEntry = static_cast< RTL_HASHENTRY* >(rtl_allocateMemory(sizeof(RTL_HASHENTRY)));
    newEntry->Entry = value;
    newEntry->Next = nullptr;
    *pEntry = newEntry;
    (*table)->Elements++;
    return nullptr;
}

sal_Bool rtl_hashtable_grow(RTL_HASHTABLE** table)
{
    RTL_HASHTABLE* pNewTable = nullptr;
    sal_Int32 i = 0;

    rtl_hashtable_init(&pNewTable, static_cast<sal_Int8>((*table)->iSize + 1));

    while (i < (*table)->Size)
    {
        if ((*table)->Table[i])
        {
            RTL_HASHENTRY *pNext;
            RTL_HASHENTRY *pEntry = (*table)->Table[i];

            rtl_hashtable_add(&pNewTable, pEntry->Entry);

            while (pEntry->Next)
            {
                rtl_hashtable_add(&pNewTable, pEntry->Next->Entry);
                pNext = pEntry->Next;
                rtl_freeMemory(pEntry);
                pEntry = pNext;
            }

            rtl_freeMemory(pEntry);
        }

        i++;
    }

    rtl_freeMemory((*table)->Table);
    rtl_freeMemory(*table);
    (*table) = pNewTable;

    return true;
}

extern "C" sal_Bool rtl_hashtable_find(RTL_HASHTABLE * table, sal_Int32 key, sal_Int32 hashCode, rtl_Locale** pValue)
{
    if (!table)
        return false;

    if (table->Table[key])
    {
        RTL_HASHENTRY *pEntry = table->Table[key];

        while (pEntry && hashCode != pEntry->Entry->HashCode)
        {
            pEntry = pEntry->Next;
        }

        if (pEntry)
            *pValue = pEntry->Entry;
        else
            return false;
    }
    else
    {
        return false;
    }

    return true;
}

void rtl_locale_init()
{
    OSL_ASSERT(!g_pLocaleTable);
    rtl_hashtable_init(&g_pLocaleTable, 1);
}

void rtl_locale_fini()
{
    if (g_pLocaleTable)
    {
        rtl_hashtable_destroy (g_pLocaleTable);
        g_pLocaleTable = nullptr;
    }
}

rtl_Locale * SAL_CALL rtl_locale_register(const sal_Unicode * language, const sal_Unicode * country, const sal_Unicode * variant)
{
    sal_Unicode c = 0;
    rtl_uString* sLanguage = nullptr;
    rtl_uString* sCountry = nullptr;
    rtl_uString* sVariant = nullptr;
    rtl_Locale *newLocale = nullptr;
    sal_Int32 hashCode = -1;
    sal_Int32 key = 0;

    if (!country)
        country = &c;

    if (!variant)
        variant = &c;

    ensureLocaleSingleton();
    if (!g_pLocaleTable)
        return nullptr;

    hashCode = rtl_ustr_hashCode(language) ^ rtl_ustr_hashCode(country) ^ rtl_ustr_hashCode(variant);
    key = rtl_hashfunc(g_pLocaleTable, hashCode);

    if (rtl_hashtable_find(g_pLocaleTable, key, hashCode, &newLocale))
        return newLocale;

    rtl_uString_newFromStr(&sLanguage, language);
    rtl_uString_newFromStr(&sCountry, country);
    rtl_uString_newFromStr(&sVariant, variant);

    newLocale = static_cast<rtl_Locale*>(rtl_allocateMemory( sizeof(rtl_Locale) ));

    newLocale->Language = sLanguage;
    newLocale->Country = sCountry;
    newLocale->Variant = sVariant;
    newLocale->HashCode = hashCode;

    rtl_hashtable_add(&g_pLocaleTable, newLocale);

    return newLocale;
}

rtl_Locale * SAL_CALL rtl_locale_getDefault()
{
    return g_pDefaultLocale;
}

void SAL_CALL rtl_locale_setDefault(const sal_Unicode * language, const sal_Unicode * country, const sal_Unicode * variant)
{
    g_pDefaultLocale = rtl_locale_register(language, country, variant);
}

rtl_uString * SAL_CALL rtl_locale_getLanguage(rtl_Locale * This)
{
    rtl_uString_acquire(This->Language);
    return This->Language;
}

rtl_uString * SAL_CALL rtl_locale_getCountry(rtl_Locale * This)
{
    rtl_uString_acquire(This->Country);
    return This->Country;
}

rtl_uString * SAL_CALL rtl_locale_getVariant(rtl_Locale * This)
{
    rtl_uString_acquire(This->Variant);
    return This->Variant;
}

sal_Int32 SAL_CALL rtl_locale_hashCode(rtl_Locale * This)
{
    return This->HashCode;
}

sal_Int32 SAL_CALL rtl_locale_equals(rtl_Locale * This, rtl_Locale * obj)
{
    return This == obj;
}

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */