summaryrefslogtreecommitdiff
path: root/comphelper/source/streaming/oslfile2streamwrap.cxx
blob: 68af332983360a107b16f9a6011abae1ca4243c7 (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
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * Copyright 2000, 2010 Oracle and/or its affiliates.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
 * This file is part of OpenOffice.org.
 *
 * OpenOffice.org is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 3
 * only, as published by the Free Software Foundation.
 *
 * OpenOffice.org is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License version 3 for more details
 * (a copy is included in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU Lesser General Public License
 * version 3 along with OpenOffice.org.  If not, see
 * <http://www.openoffice.org/license.html>
 * for a copy of the LGPLv3 License.
 *
 ************************************************************************/

// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_comphelper.hxx"
#include <comphelper/oslfile2streamwrap.hxx>

#include <algorithm>

namespace comphelper
{
    using namespace osl;

//------------------------------------------------------------------
OSLInputStreamWrapper::OSLInputStreamWrapper( File& _rFile )
                 :m_pFile(&_rFile)
                 ,m_bFileOwner(sal_False)
{
}

//------------------------------------------------------------------
OSLInputStreamWrapper::OSLInputStreamWrapper( File* pStream, sal_Bool bOwner )
                 :m_pFile( pStream )
                 ,m_bFileOwner( bOwner )
{
}

//------------------------------------------------------------------
OSLInputStreamWrapper::~OSLInputStreamWrapper()
{
    if( m_bFileOwner )
        delete m_pFile;
}

//------------------------------------------------------------------------------
sal_Int32 SAL_CALL OSLInputStreamWrapper::readBytes(staruno::Sequence< sal_Int8 >& aData, sal_Int32 nBytesToRead)
                throw( stario::NotConnectedException, stario::BufferSizeExceededException, staruno::RuntimeException )
{
    if (!m_pFile)
        throw stario::NotConnectedException(::rtl::OUString(), static_cast<staruno::XWeak*>(this));

    if (nBytesToRead < 0)
        throw stario::BufferSizeExceededException(::rtl::OUString(),static_cast<staruno::XWeak*>(this));

    ::osl::MutexGuard aGuard( m_aMutex );

    aData.realloc(nBytesToRead);

    sal_uInt64 nRead = 0;
    FileBase::RC eError = m_pFile->read((void*)aData.getArray(), nBytesToRead, nRead);
    if (eError != FileBase::E_None)
        throw stario::BufferSizeExceededException(::rtl::OUString(),static_cast<staruno::XWeak*>(this));

    // Wenn gelesene Zeichen < MaxLength, staruno::Sequence anpassen
    if (nRead < (sal_uInt32)nBytesToRead)
        aData.realloc( sal::static_int_cast< sal_Int32 >(nRead) );

    return sal::static_int_cast< sal_Int32 >(nRead);
}

//------------------------------------------------------------------------------
sal_Int32 SAL_CALL OSLInputStreamWrapper::readSomeBytes(staruno::Sequence< sal_Int8 >& aData, sal_Int32 nMaxBytesToRead) throw( stario::NotConnectedException, stario::BufferSizeExceededException, staruno::RuntimeException )
{
    if (!m_pFile)
        throw stario::NotConnectedException(::rtl::OUString(), static_cast<staruno::XWeak*>(this));

    if (nMaxBytesToRead < 0)
        throw stario::BufferSizeExceededException(::rtl::OUString(),static_cast<staruno::XWeak*>(this));

    /*
      if (m_pFile->IsEof())
      {
      aData.realloc(0);
      return 0;
      }
      else
    */
    return readBytes(aData, nMaxBytesToRead);
}

//------------------------------------------------------------------------------
void SAL_CALL OSLInputStreamWrapper::skipBytes(sal_Int32 nBytesToSkip) throw( stario::NotConnectedException, stario::BufferSizeExceededException, staruno::RuntimeException )
{
    ::osl::MutexGuard aGuard( m_aMutex );
    if (!m_pFile)
        throw stario::NotConnectedException(::rtl::OUString(), static_cast<staruno::XWeak*>(this));

    sal_uInt64 nCurrentPos;
    m_pFile->getPos(nCurrentPos);

    sal_uInt64 nNewPos = nCurrentPos + nBytesToSkip;
    FileBase::RC eError = m_pFile->setPos(osl_Pos_Absolut, nNewPos);
    if (eError != FileBase::E_None)
    {
        throw stario::NotConnectedException(::rtl::OUString(), static_cast<staruno::XWeak*>(this));
    }

#ifdef DBG_UTIL
    m_pFile->getPos(nCurrentPos);
//  volatile int dummy = 0;                      // to take a look at last changes ;-)
#endif
}

//------------------------------------------------------------------------------
sal_Int32 SAL_CALL OSLInputStreamWrapper::available() throw( stario::NotConnectedException, staruno::RuntimeException )
{
    ::osl::MutexGuard aGuard( m_aMutex );
    if (!m_pFile)
        throw stario::NotConnectedException(::rtl::OUString(), static_cast<staruno::XWeak*>(this));

    sal_uInt64 nPos;
    FileBase::RC eError = m_pFile->getPos(nPos);
    if (eError != FileBase::E_None)
        throw stario::NotConnectedException(::rtl::OUString(), static_cast<staruno::XWeak*>(this));

    sal_uInt64 nDummy = 0;
    eError = m_pFile->setPos(osl_Pos_End, nDummy);
    if (eError != FileBase::E_None)
       throw stario::NotConnectedException(::rtl::OUString(),static_cast<staruno::XWeak*>(this));

    sal_uInt64 nAvailable;
    eError = m_pFile->getPos(nAvailable);
    if (eError != FileBase::E_None)
       throw stario::NotConnectedException(::rtl::OUString(),static_cast<staruno::XWeak*>(this));

    nAvailable = nAvailable - nPos;
    eError = m_pFile->setPos(osl_Pos_Absolut, nPos);
    if (eError != FileBase::E_None)
       throw stario::NotConnectedException(::rtl::OUString(),static_cast<staruno::XWeak*>(this));
    return sal::static_int_cast< sal_Int32 >(
        std::max(nAvailable, sal::static_int_cast< sal_uInt64 >(SAL_MAX_INT32)));
}

//------------------------------------------------------------------------------
void SAL_CALL OSLInputStreamWrapper::closeInput() throw( stario::NotConnectedException, staruno::RuntimeException )
{
    if (!m_pFile)
        throw stario::NotConnectedException(::rtl::OUString(), static_cast<staruno::XWeak*>(this));

    m_pFile->close();
    if (m_bFileOwner)
        delete m_pFile;

    m_pFile = NULL;
}

/*************************************************************************/
// stario::XOutputStream
//------------------------------------------------------------------------------
void SAL_CALL OSLOutputStreamWrapper::writeBytes(const staruno::Sequence< sal_Int8 >& aData) throw( stario::NotConnectedException, stario::BufferSizeExceededException, staruno::RuntimeException )
{
    sal_uInt64 nWritten;
    FileBase::RC eError = rFile.write(aData.getConstArray(),aData.getLength(), nWritten);
    if (eError != FileBase::E_None
        || nWritten != sal::static_int_cast< sal_uInt32 >(aData.getLength()))
    {
        throw stario::BufferSizeExceededException(::rtl::OUString(),static_cast<staruno::XWeak*>(this));
    }
}

//------------------------------------------------------------------
void SAL_CALL OSLOutputStreamWrapper::flush() throw( stario::NotConnectedException, stario::BufferSizeExceededException, staruno::RuntimeException )
{
}

//------------------------------------------------------------------
void SAL_CALL OSLOutputStreamWrapper::closeOutput() throw( stario::NotConnectedException, stario::BufferSizeExceededException, staruno::RuntimeException )
{
    rFile.close();
}

} // namespace comphelper


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