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
|
// ComHandler.cpp
#include "StdAfx.h"
#include "Common/ComTry.h"
#include "Windows/PropVariant.h"
#include "../../Common/LimitedStreams.h"
#include "../../Common/ProgressUtils.h"
#include "../../Common/StreamUtils.h"
#include "../../Compress/CopyCoder.h"
#include "ComHandler.h"
namespace NArchive {
namespace NCom {
STATPROPSTG kProps[] =
{
{ NULL, kpidPath, VT_BSTR},
{ NULL, kpidIsDir, VT_BOOL},
{ NULL, kpidSize, VT_UI8},
{ NULL, kpidPackSize, VT_UI8},
{ NULL, kpidCTime, VT_FILETIME},
{ NULL, kpidMTime, VT_FILETIME}
};
STATPROPSTG kArcProps[] =
{
{ NULL, kpidClusterSize, VT_UI4},
{ NULL, kpidSectorSize, VT_UI4}
};
IMP_IInArchive_Props
IMP_IInArchive_ArcProps
STDMETHODIMP CHandler::GetArchiveProperty(PROPID propID, PROPVARIANT *value)
{
COM_TRY_BEGIN
NWindows::NCOM::CPropVariant prop;
switch(propID)
{
case kpidClusterSize: prop = (UInt32)1 << _db.SectorSizeBits; break;
case kpidSectorSize: prop = (UInt32)1 << _db.MiniSectorSizeBits; break;
case kpidMainSubfile: if (_db.MainSubfile >= 0) prop = (UInt32)_db.MainSubfile; break;
}
prop.Detach(value);
return S_OK;
COM_TRY_END
}
STDMETHODIMP CHandler::GetProperty(UInt32 index, PROPID propID, PROPVARIANT *value)
{
COM_TRY_BEGIN
NWindows::NCOM::CPropVariant prop;
const CRef &ref = _db.Refs[index];
const CItem &item = _db.Items[ref.Did];
switch(propID)
{
case kpidPath: prop = _db.GetItemPath(index); break;
case kpidIsDir: prop = item.IsDir(); break;
case kpidCTime: prop = item.CTime; break;
case kpidMTime: prop = item.MTime; break;
case kpidPackSize: if (!item.IsDir()) prop = _db.GetItemPackSize(item.Size); break;
case kpidSize: if (!item.IsDir()) prop = item.Size; break;
}
prop.Detach(value);
return S_OK;
COM_TRY_END
}
STDMETHODIMP CHandler::Open(IInStream *inStream,
const UInt64 * /* maxCheckStartPosition */,
IArchiveOpenCallback * /* openArchiveCallback */)
{
COM_TRY_BEGIN
Close();
try
{
if (_db.Open(inStream) != S_OK)
return S_FALSE;
_stream = inStream;
}
catch(...) { return S_FALSE; }
return S_OK;
COM_TRY_END
}
STDMETHODIMP CHandler::Close()
{
_db.Clear();
_stream.Release();
return S_OK;
}
STDMETHODIMP CHandler::Extract(const UInt32 *indices, UInt32 numItems,
Int32 testMode, IArchiveExtractCallback *extractCallback)
{
COM_TRY_BEGIN
bool allFilesMode = (numItems == (UInt32)-1);
if (allFilesMode)
numItems = _db.Refs.Size();
if (numItems == 0)
return S_OK;
UInt32 i;
UInt64 totalSize = 0;
for(i = 0; i < numItems; i++)
{
const CItem &item = _db.Items[_db.Refs[allFilesMode ? i : indices[i]].Did];
if (!item.IsDir())
totalSize += item.Size;
}
RINOK(extractCallback->SetTotal(totalSize));
UInt64 totalPackSize;
totalSize = totalPackSize = 0;
NCompress::CCopyCoder *copyCoderSpec = new NCompress::CCopyCoder();
CMyComPtr<ICompressCoder> copyCoder = copyCoderSpec;
CLocalProgress *lps = new CLocalProgress;
CMyComPtr<ICompressProgressInfo> progress = lps;
lps->Init(extractCallback, false);
for (i = 0; i < numItems; i++)
{
lps->InSize = totalPackSize;
lps->OutSize = totalSize;
RINOK(lps->SetCur());
Int32 index = allFilesMode ? i : indices[i];
const CItem &item = _db.Items[_db.Refs[index].Did];
CMyComPtr<ISequentialOutStream> outStream;
Int32 askMode = testMode ?
NExtract::NAskMode::kTest :
NExtract::NAskMode::kExtract;
RINOK(extractCallback->GetStream(index, &outStream, askMode));
if (item.IsDir())
{
RINOK(extractCallback->PrepareOperation(askMode));
RINOK(extractCallback->SetOperationResult(NExtract::NOperationResult::kOK));
continue;
}
totalPackSize += _db.GetItemPackSize(item.Size);
totalSize += item.Size;
if (!testMode && !outStream)
continue;
RINOK(extractCallback->PrepareOperation(askMode));
Int32 res = NExtract::NOperationResult::kDataError;
CMyComPtr<ISequentialInStream> inStream;
HRESULT hres = GetStream(index, &inStream);
if (hres == S_FALSE)
res = NExtract::NOperationResult::kDataError;
else if (hres == E_NOTIMPL)
res = NExtract::NOperationResult::kUnSupportedMethod;
else
{
RINOK(hres);
if (inStream)
{
RINOK(copyCoder->Code(inStream, outStream, NULL, NULL, progress));
if (copyCoderSpec->TotalSize == item.Size)
res = NExtract::NOperationResult::kOK;
}
}
outStream.Release();
RINOK(extractCallback->SetOperationResult(res));
}
return S_OK;
COM_TRY_END
}
STDMETHODIMP CHandler::GetNumberOfItems(UInt32 *numItems)
{
*numItems = _db.Refs.Size();
return S_OK;
}
STDMETHODIMP CHandler::GetStream(UInt32 index, ISequentialInStream **stream)
{
COM_TRY_BEGIN
*stream = 0;
const CItem &item = _db.Items[_db.Refs[index].Did];
CClusterInStream *streamSpec = new CClusterInStream;
CMyComPtr<ISequentialInStream> streamTemp = streamSpec;
streamSpec->Stream = _stream;
streamSpec->StartOffset = 0;
bool isLargeStream = _db.IsLargeStream(item.Size);
int bsLog = isLargeStream ? _db.SectorSizeBits : _db.MiniSectorSizeBits;
streamSpec->BlockSizeLog = bsLog;
streamSpec->Size = item.Size;
UInt32 clusterSize = (UInt32)1 << bsLog;
UInt64 numClusters64 = (item.Size + clusterSize - 1) >> bsLog;
if (numClusters64 >= ((UInt32)1 << 31))
return E_NOTIMPL;
streamSpec->Vector.Reserve((int)numClusters64);
UInt32 sid = item.Sid;
UInt64 size = item.Size;
if (size != 0)
{
for (;; size -= clusterSize)
{
if (isLargeStream)
{
if (sid >= _db.FatSize)
return S_FALSE;
streamSpec->Vector.Add(sid + 1);
sid = _db.Fat[sid];
}
else
{
UInt64 val;
if (sid >= _db.MatSize || !_db.GetMiniCluster(sid, val) || val >= (UInt64)1 << 32)
return S_FALSE;
streamSpec->Vector.Add((UInt32)val);
sid = _db.Mat[sid];
}
if (size <= clusterSize)
break;
}
}
if (sid != NFatID::kEndOfChain)
return S_FALSE;
RINOK(streamSpec->InitAndSeek());
*stream = streamTemp.Detach();
return S_OK;
COM_TRY_END
}
}}
|
