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 | /* -*- 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/ustring.h>
#include <osl/diagnose.h>
#include "DTransHelper.hxx"
// implementation
CStgTransferHelper::CStgTransferHelper( bool bAutoInit,
HGLOBAL hGlob,
bool bDelStgOnRelease ) :
m_lpStream( nullptr ),
m_bDelStgOnRelease( bDelStgOnRelease )
{
if ( bAutoInit )
init( hGlob, m_bDelStgOnRelease );
}
// dtor
CStgTransferHelper::~CStgTransferHelper( )
{
if ( m_lpStream )
m_lpStream->Release( );
}
// TransferData into the
void CStgTransferHelper::write( const void* lpData, ULONG cb, ULONG* cbWritten )
{
HRESULT hr = E_FAIL;
if ( m_lpStream )
hr = m_lpStream->Write( lpData, cb, cbWritten );
if ( FAILED( hr ) )
throw CStgTransferException( hr );
#if OSL_DEBUG_LEVEL > 0
HGLOBAL hGlob;
hr = GetHGlobalFromStream( m_lpStream, &hGlob );
OSL_ASSERT( SUCCEEDED( hr ) );
/*DWORD dwSize =*/ GlobalSize( hGlob );
/*LPVOID lpdbgData =*/ GlobalLock( hGlob );
GlobalUnlock( hGlob );
#endif
}
// read
void CStgTransferHelper::read( LPVOID pv, ULONG cb, ULONG* pcbRead )
{
HRESULT hr = E_FAIL;
if ( m_lpStream )
hr = m_lpStream->Read( pv, cb , pcbRead );
if ( FAILED( hr ) )
throw CStgTransferException( hr );
}
// GetHGlobal
HGLOBAL CStgTransferHelper::getHGlobal( ) const
{
OSL_ASSERT( m_lpStream );
HGLOBAL hGlob = nullptr;
if ( m_lpStream )
{
HRESULT hr = GetHGlobalFromStream( m_lpStream, &hGlob );
if ( FAILED( hr ) )
hGlob = nullptr;
}
return hGlob;
}
// getIStream
void CStgTransferHelper::getIStream( LPSTREAM* ppStream )<--- The function 'getIStream' is never used.
{
OSL_ASSERT( ppStream );
*ppStream = m_lpStream;
if ( *ppStream )
static_cast< LPUNKNOWN >( *ppStream )->AddRef( );
}
// Init
void CStgTransferHelper::init( SIZE_T newSize,
sal_uInt32 uiFlags,
bool bDelStgOnRelease )
{
cleanup( );
m_bDelStgOnRelease = bDelStgOnRelease;
HGLOBAL hGlob = GlobalAlloc( uiFlags, newSize );
if ( nullptr == hGlob )
throw CStgTransferException( STG_E_MEDIUMFULL );
HRESULT hr = CreateStreamOnHGlobal( hGlob, m_bDelStgOnRelease, &m_lpStream );
if ( FAILED( hr ) )
{
GlobalFree( hGlob );
m_lpStream = nullptr;
throw CStgTransferException( hr );
}
#if OSL_DEBUG_LEVEL > 0
STATSTG statstg;
hr = m_lpStream->Stat( &statstg, STATFLAG_DEFAULT );
OSL_ASSERT( SUCCEEDED( hr ) );
#endif
}
// Init
void CStgTransferHelper::init( HGLOBAL hGlob,
bool bDelStgOnRelease )
{
cleanup( );
m_bDelStgOnRelease = bDelStgOnRelease;
HRESULT hr = CreateStreamOnHGlobal( hGlob, m_bDelStgOnRelease, &m_lpStream );
if ( FAILED( hr ) )
throw CStgTransferException( hr );
}
// free the global memory and invalidate the stream pointer
void CStgTransferHelper::cleanup( )
{
if ( m_lpStream && !m_bDelStgOnRelease )
{
HGLOBAL hGlob;
GetHGlobalFromStream( m_lpStream, &hGlob );
GlobalFree( hGlob );
}
if ( m_lpStream )
{
m_lpStream->Release( );
m_lpStream = nullptr;
}
}
// return the size of memory we point to
sal_uInt32 CStgTransferHelper::memSize( CLIPFORMAT cf ) const
{
DWORD dwSize = 0;
if ( nullptr != m_lpStream )
{
HGLOBAL hGlob;
GetHGlobalFromStream( m_lpStream, &hGlob );
if ( CF_TEXT == cf || RegisterClipboardFormatW( L"HTML Format" ) == cf )
{
char* pText = static_cast< char* >( GlobalLock( hGlob ) );
if ( pText )
{
dwSize = strlen(pText) + 1; // strlen + trailing '\0'
GlobalUnlock( hGlob );
}
}
else if ( CF_UNICODETEXT == cf )
{
sal_Unicode* pText = static_cast< sal_Unicode* >( GlobalLock( hGlob ) );
if ( pText )
{
dwSize = rtl_ustr_getLength( pText ) * sizeof( sal_Unicode );
GlobalUnlock( hGlob );
}
}
else
dwSize = GlobalSize( hGlob );
}
return dwSize;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|