summaryrefslogtreecommitdiff
path: root/store/source/stordir.cxx
blob: 7688194069dec79ce09cbeb836534ae0558925a8 (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
/* -*- 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 "stordir.hxx"

#include <sal/types.h>

#include <rtl/textcvt.h>
#include <rtl/ref.hxx>
#include <rtl/ustring.h>

#include <osl/mutex.hxx>

#include <store/types.h>

#include "storbase.hxx"
#include "stordata.hxx"
#include "storpage.hxx"

using namespace store;

/*========================================================================
 *
 * OStore... internals.
 *
 *======================================================================*/
/*
 * convertTextToUnicode.
 */
static sal_Size convertTextToUnicode (
    rtl_TextToUnicodeConverter  hConverter,
    const char *pSrcBuffer, sal_Size nSrcLength,
    sal_Unicode    *pDstBuffer, sal_Size nDstLength)
{
    sal_uInt32 nCvtInfo = 0;
    sal_Size nCvtBytes = 0;
    return rtl_convertTextToUnicode (
        hConverter, nullptr,
        pSrcBuffer, nSrcLength,
        pDstBuffer, nDstLength,
        OSTRING_TO_OUSTRING_CVTFLAGS,
        &nCvtInfo, &nCvtBytes);
}

/*========================================================================
 *
 * OStoreDirectory_Impl implementation.
 *
 *======================================================================*/
const sal_uInt32 OStoreDirectory_Impl::m_nTypeId(0x89191107);

/*
 * OStoreDirectory_Impl.
 */
OStoreDirectory_Impl::OStoreDirectory_Impl()
    : m_xManager (),
      m_aDescr   (0, 0, 0),
      m_nPath    (0),
      m_hTextCvt (nullptr)
{}

/*
 * ~OStoreDirectory_Impl.
 */
OStoreDirectory_Impl::~OStoreDirectory_Impl()
{
    if (m_xManager.is())
    {
        if (m_aDescr.m_nAddr != STORE_PAGE_NULL)
            m_xManager->releasePage (m_aDescr);
    }
    rtl_destroyTextToUnicodeConverter (m_hTextCvt);
}

/*
 * isKindOf.
 */
bool OStoreDirectory_Impl::isKindOf (sal_uInt32 nTypeId)
{
    return (nTypeId == m_nTypeId);
}

/*
 * create.
 */
storeError OStoreDirectory_Impl::create (
    OStorePageManager *pManager,
    rtl_String const  *pPath,
    rtl_String const  *pName,
    storeAccessMode    eMode)
{
    rtl::Reference<OStorePageManager> xManager (pManager);
    if (!xManager.is())
        return store_E_InvalidAccess;

    if (!(pPath && pName))
        return store_E_InvalidParameter;

    OStoreDirectoryPageObject aPage;
    storeError eErrCode = xManager->iget (
        aPage, STORE_ATTRIB_ISDIR,
        pPath, pName, eMode);
    if (eErrCode != store_E_None)
        return eErrCode;

    if (!(aPage.attrib() & STORE_ATTRIB_ISDIR))
        return store_E_NotDirectory;

    inode_holder_type xNode (aPage.get());
    eErrCode = xManager->acquirePage (xNode->m_aDescr, storeAccessMode::ReadOnly);
    if (eErrCode != store_E_None)
        return eErrCode;

    // Evaluate iteration path.
    m_nPath = aPage.path();
    m_nPath = rtl_crc32 (m_nPath, "/", 1);

    // Save page manager, and descriptor.
    m_xManager = xManager;
    m_aDescr   = xNode->m_aDescr;

    return store_E_None;
}

/*
 * iterate.
 */
storeError OStoreDirectory_Impl::iterate (storeFindData &rFindData)
{
    if (!m_xManager.is())
        return store_E_InvalidAccess;

    storeError eErrCode = store_E_NoMoreFiles;
    if (!rFindData.m_nReserved)
        return eErrCode;

    // Acquire exclusive access.
    osl::MutexGuard aGuard (*m_xManager);

    // Check TextConverter.
    if (m_hTextCvt == nullptr)
        m_hTextCvt = rtl_createTextToUnicodeConverter(RTL_TEXTENCODING_UTF8);

    // Setup iteration key.
    OStorePageKey aKey (rFindData.m_nReserved, m_nPath);

    // Iterate.
    for (;;)
    {
        OStorePageLink aLink;
        eErrCode = m_xManager->iterate (aKey, aLink, rFindData.m_nAttrib);
        if (!((eErrCode == store_E_None) && (aKey.m_nHigh == store::htonl(m_nPath))))
            break;

        if (!(rFindData.m_nAttrib & STORE_ATTRIB_ISLINK))
        {
            // Load page.
            OStoreDirectoryPageObject aPage;
            eErrCode = m_xManager->loadObjectAt (aPage, aLink.location());
            if (eErrCode == store_E_None)
            {
                inode_holder_type xNode (aPage.get());

                // Setup FindData.
                char *p = xNode->m_aNameBlock.m_pData;
                sal_Int32 n = rtl_str_getLength (p);
                sal_Int32 k = rFindData.m_nLength;

                n = convertTextToUnicode (
                    m_hTextCvt, p, n,
                    rFindData.m_pszName, STORE_MAXIMUM_NAMESIZE - 1);
                if (k > n)
                {
                    k = (k - n) * sizeof(sal_Unicode);
                    memset (&rFindData.m_pszName[n], 0, k);
                }

                rFindData.m_nLength  = n;
                rFindData.m_nAttrib |= aPage.attrib();

                // Leave.
                rFindData.m_nReserved = store::ntohl(aKey.m_nLow);
                return store_E_None;
            }
        }

        if (aKey.m_nLow == 0)
            break;
        aKey.m_nLow = store::htonl(store::ntohl(aKey.m_nLow) - 1);
    }

    // Finished.
    memset (&rFindData, 0, sizeof (storeFindData));
    return store_E_NoMoreFiles;
}

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