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1 // Archive/ZipItem.cpp
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2
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3 #include "StdAfx.h"
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4
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5 #include "ZipHeader.h"
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6 #include "ZipItem.h"
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7 #include "../Common/ItemNameUtils.h"
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8 #include "../../../../C/CpuArch.h"
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9
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10 namespace NArchive {
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11 namespace NZip {
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12
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13 bool operator==(const CVersion &v1, const CVersion &v2)
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14 {
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15 return (v1.Version == v2.Version) && (v1.HostOS == v2.HostOS);
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16 }
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17
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18 bool operator!=(const CVersion &v1, const CVersion &v2)
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19 {
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20 return !(v1 == v2);
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21 }
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22
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23 bool CExtraSubBlock::ExtractNtfsTime(int index, FILETIME &ft) const
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24 {
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25 ft.dwHighDateTime = ft.dwLowDateTime = 0;
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26 UInt32 size = (UInt32)Data.GetCapacity();
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27 if (ID != NFileHeader::NExtraID::kNTFS || size < 32)
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28 return false;
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29 const Byte *p = (const Byte *)Data;
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30 p += 4; // for reserved
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31 size -= 4;
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32 while (size > 4)
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33 {
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34 UInt16 tag = GetUi16(p);
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35 UInt32 attrSize = GetUi16(p + 2);
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36 p += 4;
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37 size -= 4;
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38 if (attrSize > size)
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39 attrSize = size;
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40
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41 if (tag == NFileHeader::NNtfsExtra::kTagTime && attrSize >= 24)
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42 {
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43 p += 8 * index;
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44 ft.dwLowDateTime = GetUi32(p);
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45 ft.dwHighDateTime = GetUi32(p + 4);
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46 return true;
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47 }
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48 p += attrSize;
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49 size -= attrSize;
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50 }
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51 return false;
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52 }
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53
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54 bool CLocalItem::IsDir() const
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55 {
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56 return NItemName::HasTailSlash(Name, GetCodePage());
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57 }
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58
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59 bool CItem::IsDir() const
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60 {
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61 if (NItemName::HasTailSlash(Name, GetCodePage()))
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62 return true;
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63 if (!FromCentral)
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64 return false;
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65 WORD highAttributes = WORD((ExternalAttributes >> 16 ) & 0xFFFF);
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66 switch(MadeByVersion.HostOS)
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67 {
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68 case NFileHeader::NHostOS::kAMIGA:
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69 switch (highAttributes & NFileHeader::NAmigaAttribute::kIFMT)
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70 {
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71 case NFileHeader::NAmigaAttribute::kIFDIR: return true;
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72 case NFileHeader::NAmigaAttribute::kIFREG: return false;
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73 default: return false; // change it throw kUnknownAttributes;
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74 }
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75 case NFileHeader::NHostOS::kFAT:
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76 case NFileHeader::NHostOS::kNTFS:
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77 case NFileHeader::NHostOS::kHPFS:
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78 case NFileHeader::NHostOS::kVFAT:
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79 return ((ExternalAttributes & FILE_ATTRIBUTE_DIRECTORY) != 0);
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80 case NFileHeader::NHostOS::kAtari:
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81 case NFileHeader::NHostOS::kMac:
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82 case NFileHeader::NHostOS::kVMS:
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83 case NFileHeader::NHostOS::kVM_CMS:
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84 case NFileHeader::NHostOS::kAcorn:
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85 case NFileHeader::NHostOS::kMVS:
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86 return false; // change it throw kUnknownAttributes;
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87 default:
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88 /*
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89 switch (highAttributes & NFileHeader::NUnixAttribute::kIFMT)
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90 {
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91 case NFileHeader::NUnixAttribute::kIFDIR:
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92 return true;
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93 default:
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94 return false;
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95 }
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96 */
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97 return false;
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98 }
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99 }
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100
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101 UInt32 CLocalItem::GetWinAttributes() const
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102 {
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103 DWORD winAttributes = 0;
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104 if (IsDir())
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105 winAttributes |= FILE_ATTRIBUTE_DIRECTORY;
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106 return winAttributes;
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107 }
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108
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109 UInt32 CItem::GetWinAttributes() const
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110 {
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111 DWORD winAttributes = 0;
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112 switch(MadeByVersion.HostOS)
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113 {
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114 case NFileHeader::NHostOS::kFAT:
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115 case NFileHeader::NHostOS::kNTFS:
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116 if (FromCentral)
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117 winAttributes = ExternalAttributes;
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118 break;
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119 default:
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120 winAttributes = 0; // must be converted from unix value;
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121 }
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122 if (IsDir()) // test it;
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123 winAttributes |= FILE_ATTRIBUTE_DIRECTORY;
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124 return winAttributes;
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125 }
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126
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127 void CLocalItem::SetFlagBits(int startBitNumber, int numBits, int value)
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128 {
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129 UInt16 mask = (UInt16)(((1 << numBits) - 1) << startBitNumber);
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130 Flags &= ~mask;
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131 Flags |= value << startBitNumber;
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132 }
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133
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134 void CLocalItem::SetBitMask(int bitMask, bool enable)
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135 {
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136 if(enable)
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137 Flags |= bitMask;
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138 else
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139 Flags &= ~bitMask;
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140 }
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141
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142 void CLocalItem::SetEncrypted(bool encrypted)
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143 { SetBitMask(NFileHeader::NFlags::kEncrypted, encrypted); }
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144 void CLocalItem::SetUtf8(bool isUtf8)
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145 { SetBitMask(NFileHeader::NFlags::kUtf8, isUtf8); }
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146
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147 }}
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