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1 // 7zItem.h
2 
3 #ifndef __7Z_ITEM_H
4 #define __7Z_ITEM_H
5 
6 #include "../../../Common/MyBuffer.h"
7 #include "../../../Common/MyString.h"
8 
9 #include "../../Common/MethodId.h"
10 
11 #include "7zHeader.h"
12 
13 namespace NArchive {
14 namespace N7z {
15 
16 typedef UInt32 CNum;
17 const CNum kNumMax     = 0x7FFFFFFF;
18 const CNum kNumNoIndex = 0xFFFFFFFF;
19 
20 struct CCoderInfo
21 {
22   CMethodId MethodID;
23   CByteBuffer Props;
24   UInt32 NumStreams;
25 
IsSimpleCoderCCoderInfo26   bool IsSimpleCoder() const { return NumStreams == 1; }
27 };
28 
29 
30 struct CBond
31 {
32   UInt32 PackIndex;
33   UInt32 UnpackIndex;
34 };
35 
36 
37 struct CFolder
38 {
39   CLASS_NO_COPY(CFolder)
40 public:
41   CObjArray2<CCoderInfo> Coders;
42   CObjArray2<CBond> Bonds;
43   CObjArray2<UInt32> PackStreams;
44 
CFolderCFolder45   CFolder() {}
46 
IsDecodingSupportedCFolder47   bool IsDecodingSupported() const { return Coders.Size() <= 32; }
48 
Find_in_PackStreamsCFolder49   int Find_in_PackStreams(UInt32 packStream) const
50   {
51     FOR_VECTOR(i, PackStreams)
52       if (PackStreams[i] == packStream)
53         return (int)i;
54     return -1;
55   }
56 
FindBond_for_PackStreamCFolder57   int FindBond_for_PackStream(UInt32 packStream) const
58   {
59     FOR_VECTOR(i, Bonds)
60       if (Bonds[i].PackIndex == packStream)
61         return (int)i;
62     return -1;
63   }
64 
65   /*
66   int FindBond_for_UnpackStream(UInt32 unpackStream) const
67   {
68     FOR_VECTOR(i, Bonds)
69       if (Bonds[i].UnpackIndex == unpackStream)
70         return i;
71     return -1;
72   }
73 
74   int FindOutCoder() const
75   {
76     for (int i = (int)Coders.Size() - 1; i >= 0; i--)
77       if (FindBond_for_UnpackStream(i) < 0)
78         return i;
79     return -1;
80   }
81   */
82 
IsEncryptedCFolder83   bool IsEncrypted() const
84   {
85     FOR_VECTOR(i, Coders)
86       if (Coders[i].MethodID == k_AES)
87         return true;
88     return false;
89   }
90 };
91 
92 
93 struct CUInt32DefVector
94 {
95   CBoolVector Defs;
96   CRecordVector<UInt32> Vals;
97 
ClearAndSetSizeCUInt32DefVector98   void ClearAndSetSize(unsigned newSize)
99   {
100     Defs.ClearAndSetSize(newSize);
101     Vals.ClearAndSetSize(newSize);
102   }
103 
ClearCUInt32DefVector104   void Clear()
105   {
106     Defs.Clear();
107     Vals.Clear();
108   }
109 
ReserveDownCUInt32DefVector110   void ReserveDown()
111   {
112     Defs.ReserveDown();
113     Vals.ReserveDown();
114   }
115 
GetItemCUInt32DefVector116   bool GetItem(unsigned index, UInt32 &value) const
117   {
118     if (index < Defs.Size() && Defs[index])
119     {
120       value = Vals[index];
121       return true;
122     }
123     value = 0;
124     return false;
125   }
126 
ValidAndDefinedCUInt32DefVector127   bool ValidAndDefined(unsigned i) const { return i < Defs.Size() && Defs[i]; }
128 
CheckSizeCUInt32DefVector129   bool CheckSize(unsigned size) const { return Defs.Size() == size || Defs.Size() == 0; }
130 
131   void SetItem(unsigned index, bool defined, UInt32 value);
132 };
133 
134 
135 struct CUInt64DefVector
136 {
137   CBoolVector Defs;
138   CRecordVector<UInt64> Vals;
139 
ClearCUInt64DefVector140   void Clear()
141   {
142     Defs.Clear();
143     Vals.Clear();
144   }
145 
ReserveDownCUInt64DefVector146   void ReserveDown()
147   {
148     Defs.ReserveDown();
149     Vals.ReserveDown();
150   }
151 
GetItemCUInt64DefVector152   bool GetItem(unsigned index, UInt64 &value) const
153   {
154     if (index < Defs.Size() && Defs[index])
155     {
156       value = Vals[index];
157       return true;
158     }
159     value = 0;
160     return false;
161   }
162 
CheckSizeCUInt64DefVector163   bool CheckSize(unsigned size) const { return Defs.Size() == size || Defs.Size() == 0; }
164 
165   void SetItem(unsigned index, bool defined, UInt64 value);
166 };
167 
168 
169 struct CFileItem
170 {
171   UInt64 Size;
172   UInt32 Crc;
173   /*
174   int Parent;
175   bool IsAltStream;
176   */
177   bool HasStream; // Test it !!! it means that there is
178                   // stream in some folder. It can be empty stream
179   bool IsDir;
180   bool CrcDefined;
181 
182   /*
183   void Clear()
184   {
185     HasStream = true;
186     IsDir = false;
187     CrcDefined = false;
188   }
189 
190   CFileItem():
191     // Parent(-1),
192     // IsAltStream(false),
193     HasStream(true),
194     IsDir(false),
195     CrcDefined(false),
196       {}
197   */
198 };
199 
200 }}
201 
202 #endif
203