summaryrefslogtreecommitdiff
path: root/xmlhelp/source/cxxhelp/provider/inputstream.cxx
blob: 58ae720b7d1157563a528d4dac3f7e2aabc34bc4 (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
/* -*- 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.
 *
 ************************************************************************/


#include "inputstream.hxx"


using namespace chelp;
using namespace com::sun::star;
using namespace com::sun::star::ucb;



XInputStream_impl::XInputStream_impl( const rtl::OUString& aUncPath )
    : m_bIsOpen( false ),
      m_aFile( aUncPath )
{
    m_bIsOpen = ( osl::FileBase::E_None == m_aFile.open( osl_File_OpenFlag_Read ) );
}


XInputStream_impl::~XInputStream_impl()
{
    closeInput();
}


bool SAL_CALL XInputStream_impl::CtorSuccess()
{
    return m_bIsOpen;
};


uno::Any SAL_CALL
XInputStream_impl::queryInterface(
    const uno::Type& rType )
    throw( uno::RuntimeException)
{
    uno::Any aRet = cppu::queryInterface( rType,
                                          SAL_STATIC_CAST( io::XInputStream*,this ),
                                          SAL_STATIC_CAST( io::XSeekable*,this ) );
    return aRet.hasValue() ? aRet : OWeakObject::queryInterface( rType );
}


void SAL_CALL
XInputStream_impl::acquire(
    void )
    throw()
{
    OWeakObject::acquire();
}


void SAL_CALL
XInputStream_impl::release(
    void )
    throw()
{
    OWeakObject::release();
}



sal_Int32 SAL_CALL
XInputStream_impl::readBytes(
                 uno::Sequence< sal_Int8 >& aData,
                 sal_Int32 nBytesToRead )
    throw( io::NotConnectedException,
           io::BufferSizeExceededException,
           io::IOException,
           uno::RuntimeException)
{
    if( ! m_bIsOpen )
        throw io::IOException();

    aData.realloc(nBytesToRead);
    //TODO! translate memory exhaustion (if it were detectable...) into
    // io::BufferSizeExceededException

    sal_uInt64 nrc;
    m_aFile.read( aData.getArray(),sal_uInt64(nBytesToRead),nrc );

    // Shrink aData in case we read less than nBytesToRead (XInputStream
    // documentation does not tell whether this is required, and I do not know
    // if any code relies on this, so be conservative---SB):
    if (nrc != sal::static_int_cast<sal_uInt64>( nBytesToRead) )
        aData.realloc(sal_Int32(nrc));
    return ( sal_Int32 ) nrc;
}

sal_Int32 SAL_CALL
XInputStream_impl::readSomeBytes(
    uno::Sequence< sal_Int8 >& aData,
    sal_Int32 nMaxBytesToRead )
    throw( io::NotConnectedException,
           io::BufferSizeExceededException,
           io::IOException,
           uno::RuntimeException)
{
    return readBytes( aData,nMaxBytesToRead );
}


void SAL_CALL
XInputStream_impl::skipBytes(
    sal_Int32 nBytesToSkip )
    throw( io::NotConnectedException,
           io::BufferSizeExceededException,
           io::IOException,
           uno::RuntimeException)
{
    if (m_aFile.setPos(osl_Pos_Current, sal_uInt64(nBytesToSkip)) != osl::FileBase::E_None)
    {
        throw io::IOException(::rtl::OUString(
            RTL_CONSTASCII_USTRINGPARAM("XInputStream_impl::skipBytes failed seek")), uno::Reference< uno::XInterface >());
    }
}


sal_Int32 SAL_CALL
XInputStream_impl::available(
    void )
    throw( io::NotConnectedException,
           io::IOException,
           uno::RuntimeException)
{
    return 0;
}


void SAL_CALL
XInputStream_impl::closeInput(
    void )
    throw( io::NotConnectedException,
           io::IOException,
           uno::RuntimeException )
{
    if( m_bIsOpen )
    {
        osl::FileBase::RC err = m_aFile.close();
        if( err != osl::FileBase::E_None )
            throw io::IOException();
        m_bIsOpen = false;
    }
}


void SAL_CALL
XInputStream_impl::seek(
    sal_Int64 location )
    throw( lang::IllegalArgumentException,
           io::IOException,
           uno::RuntimeException )
{
    if( location < 0 )
        throw lang::IllegalArgumentException();
    if( osl::FileBase::E_None != m_aFile.setPos( osl_Pos_Absolut, sal_uInt64( location ) ) )
        throw io::IOException();
}


sal_Int64 SAL_CALL
XInputStream_impl::getPosition(
    void )
    throw( io::IOException,
           uno::RuntimeException )
{
    sal_uInt64 uPos;
    if( osl::FileBase::E_None != m_aFile.getPos( uPos ) )
        throw io::IOException();
    return sal_Int64( uPos );
}

sal_Int64 SAL_CALL
XInputStream_impl::getLength(
    void )
    throw( io::IOException,
           uno::RuntimeException )
{
    osl::FileBase::RC   err;
    sal_uInt64          uCurrentPos, uEndPos;

    err = m_aFile.getPos( uCurrentPos );
    if( err != osl::FileBase::E_None )
        throw io::IOException();

    err = m_aFile.setPos( osl_Pos_End, 0 );
    if( err != osl::FileBase::E_None )
        throw io::IOException();

    err = m_aFile.getPos( uEndPos );
    if( err != osl::FileBase::E_None )
        throw io::IOException();

    err = m_aFile.setPos( osl_Pos_Absolut, uCurrentPos );
    if( err != osl::FileBase::E_None )
        throw io::IOException();
    else
        return sal_Int64( uEndPos );
}

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