rlm@1: // Archive/ZipItem.cpp
rlm@1: 
rlm@1: #include "StdAfx.h"
rlm@1: 
rlm@1: #include "ZipHeader.h"
rlm@1: #include "ZipItem.h"
rlm@1: #include "../Common/ItemNameUtils.h"
rlm@1: #include "../../../../C/CpuArch.h"
rlm@1: 
rlm@1: namespace NArchive {
rlm@1: namespace NZip {
rlm@1: 
rlm@1: bool operator==(const CVersion &v1, const CVersion &v2)
rlm@1: {
rlm@1:   return (v1.Version == v2.Version) && (v1.HostOS == v2.HostOS);
rlm@1: }
rlm@1: 
rlm@1: bool operator!=(const CVersion &v1, const CVersion &v2)
rlm@1: {
rlm@1:   return !(v1 == v2);
rlm@1: }
rlm@1: 
rlm@1: bool CExtraSubBlock::ExtractNtfsTime(int index, FILETIME &ft) const
rlm@1: {
rlm@1:   ft.dwHighDateTime = ft.dwLowDateTime = 0;
rlm@1:   UInt32 size = (UInt32)Data.GetCapacity();
rlm@1:   if (ID != NFileHeader::NExtraID::kNTFS || size < 32)
rlm@1:     return false;
rlm@1:   const Byte *p = (const Byte *)Data;
rlm@1:   p += 4; // for reserved
rlm@1:   size -= 4;
rlm@1:   while (size > 4)
rlm@1:   {
rlm@1:     UInt16 tag = GetUi16(p);
rlm@1:     UInt32 attrSize = GetUi16(p + 2);
rlm@1:     p += 4;
rlm@1:     size -= 4;
rlm@1:     if (attrSize > size)
rlm@1:       attrSize = size;
rlm@1:     
rlm@1:     if (tag == NFileHeader::NNtfsExtra::kTagTime && attrSize >= 24)
rlm@1:     {
rlm@1:       p += 8 * index;
rlm@1:       ft.dwLowDateTime = GetUi32(p);
rlm@1:       ft.dwHighDateTime = GetUi32(p + 4);
rlm@1:       return true;
rlm@1:     }
rlm@1:     p += attrSize;
rlm@1:     size -= attrSize;
rlm@1:   }
rlm@1:   return false;
rlm@1: }
rlm@1: 
rlm@1: bool CLocalItem::IsDir() const
rlm@1: {
rlm@1:   return NItemName::HasTailSlash(Name, GetCodePage());
rlm@1: }
rlm@1: 
rlm@1: bool CItem::IsDir() const
rlm@1: {
rlm@1:   if (NItemName::HasTailSlash(Name, GetCodePage()))
rlm@1:     return true;
rlm@1:   if (!FromCentral)
rlm@1:     return false;
rlm@1:   WORD highAttributes = WORD((ExternalAttributes >> 16 ) & 0xFFFF);
rlm@1:   switch(MadeByVersion.HostOS)
rlm@1:   {
rlm@1:     case NFileHeader::NHostOS::kAMIGA:
rlm@1:       switch (highAttributes & NFileHeader::NAmigaAttribute::kIFMT)
rlm@1:       {
rlm@1:         case NFileHeader::NAmigaAttribute::kIFDIR: return true;
rlm@1:         case NFileHeader::NAmigaAttribute::kIFREG: return false;
rlm@1:         default: return false; // change it throw kUnknownAttributes;
rlm@1:       }
rlm@1:     case NFileHeader::NHostOS::kFAT:
rlm@1:     case NFileHeader::NHostOS::kNTFS:
rlm@1:     case NFileHeader::NHostOS::kHPFS:
rlm@1:     case NFileHeader::NHostOS::kVFAT:
rlm@1:       return ((ExternalAttributes & FILE_ATTRIBUTE_DIRECTORY) != 0);
rlm@1:     case NFileHeader::NHostOS::kAtari:
rlm@1:     case NFileHeader::NHostOS::kMac:
rlm@1:     case NFileHeader::NHostOS::kVMS:
rlm@1:     case NFileHeader::NHostOS::kVM_CMS:
rlm@1:     case NFileHeader::NHostOS::kAcorn:
rlm@1:     case NFileHeader::NHostOS::kMVS:
rlm@1:       return false; // change it throw kUnknownAttributes;
rlm@1:     default:
rlm@1:       /*
rlm@1:       switch (highAttributes & NFileHeader::NUnixAttribute::kIFMT)
rlm@1:       {
rlm@1:         case NFileHeader::NUnixAttribute::kIFDIR:
rlm@1:           return true;
rlm@1:         default:
rlm@1:           return false;
rlm@1:       }
rlm@1:       */
rlm@1:       return false;
rlm@1:   }
rlm@1: }
rlm@1: 
rlm@1: UInt32 CLocalItem::GetWinAttributes() const
rlm@1: {
rlm@1:   DWORD winAttributes = 0;
rlm@1:   if (IsDir())
rlm@1:     winAttributes |= FILE_ATTRIBUTE_DIRECTORY;
rlm@1:   return winAttributes;
rlm@1: }
rlm@1: 
rlm@1: UInt32 CItem::GetWinAttributes() const
rlm@1: {
rlm@1:   DWORD winAttributes = 0;
rlm@1:   switch(MadeByVersion.HostOS)
rlm@1:   {
rlm@1:     case NFileHeader::NHostOS::kFAT:
rlm@1:     case NFileHeader::NHostOS::kNTFS:
rlm@1:       if (FromCentral)
rlm@1:         winAttributes = ExternalAttributes;
rlm@1:       break;
rlm@1:     default:
rlm@1:       winAttributes = 0; // must be converted from unix value;
rlm@1:   }
rlm@1:   if (IsDir())       // test it;
rlm@1:     winAttributes |= FILE_ATTRIBUTE_DIRECTORY;
rlm@1:   return winAttributes;
rlm@1: }
rlm@1: 
rlm@1: void CLocalItem::SetFlagBits(int startBitNumber, int numBits, int value)
rlm@1: {
rlm@1:   UInt16 mask = (UInt16)(((1 << numBits) - 1) << startBitNumber);
rlm@1:   Flags &= ~mask;
rlm@1:   Flags |= value << startBitNumber;
rlm@1: }
rlm@1: 
rlm@1: void CLocalItem::SetBitMask(int bitMask, bool enable)
rlm@1: {
rlm@1:   if(enable)
rlm@1:     Flags |= bitMask;
rlm@1:   else
rlm@1:     Flags &= ~bitMask;
rlm@1: }
rlm@1: 
rlm@1: void CLocalItem::SetEncrypted(bool encrypted)
rlm@1:   { SetBitMask(NFileHeader::NFlags::kEncrypted, encrypted); }
rlm@1: void CLocalItem::SetUtf8(bool isUtf8)
rlm@1:   { SetBitMask(NFileHeader::NFlags::kUtf8, isUtf8); }
rlm@1: 
rlm@1: }}