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	https://en.cppreference.com/w/cpp/language/union: > It's undefined behavior to read from the member of the union that wasn't most recently written.
		
			
				
	
	
		
			122 lines
		
	
	
	
		
			3.4 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			122 lines
		
	
	
	
		
			3.4 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
| #include "loadcont.hpp"
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| 
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| #include "esmreader.hpp"
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| #include "esmwriter.hpp"
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| #include "defs.hpp"
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| 
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| namespace ESM
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| {
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| 
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|     void InventoryList::add(ESMReader &esm)
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|     {
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|         esm.getSubHeader();
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|         ContItem ci;
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|         esm.getT(ci.mCount);
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|         ci.mItem.assign(esm.getString(32));
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|         mList.push_back(ci);
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|     }
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| 
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|     void InventoryList::save(ESMWriter &esm) const
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|     {
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|         for (std::vector<ContItem>::const_iterator it = mList.begin(); it != mList.end(); ++it)
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|         {
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|             esm.startSubRecord("NPCO");
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|             esm.writeT(it->mCount);
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|             esm.writeFixedSizeString(it->mItem, 32);
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|             esm.endRecord("NPCO");
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|         }
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|     }
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| 
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|     unsigned int Container::sRecordId = REC_CONT;
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| 
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|     void Container::load(ESMReader &esm, bool &isDeleted)
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|     {
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|         isDeleted = false;
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|         mRecordFlags = esm.getRecordFlags();
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| 
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|         mInventory.mList.clear();
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| 
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|         bool hasName = false;
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|         bool hasWeight = false;
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|         bool hasFlags = false;
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|         while (esm.hasMoreSubs())
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|         {
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|             esm.getSubName();
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|             switch (esm.retSubName().toInt())
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|             {
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|                 case ESM::SREC_NAME:
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|                     mId = esm.getHString();
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|                     hasName = true;
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|                     break;
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|                 case ESM::FourCC<'M','O','D','L'>::value:
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|                     mModel = esm.getHString();
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|                     break;
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|                 case ESM::FourCC<'F','N','A','M'>::value:
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|                     mName = esm.getHString();
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|                     break;
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|                 case ESM::FourCC<'C','N','D','T'>::value:
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|                     esm.getHT(mWeight, 4);
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|                     hasWeight = true;
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|                     break;
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|                 case ESM::FourCC<'F','L','A','G'>::value:
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|                     esm.getHT(mFlags, 4);
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|                     if (mFlags & 0xf4)
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|                         esm.fail("Unknown flags");
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|                     if (!(mFlags & 0x8))
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|                         esm.fail("Flag 8 not set");
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|                     hasFlags = true;
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|                     break;
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|                 case ESM::FourCC<'S','C','R','I'>::value:
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|                     mScript = esm.getHString();
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|                     break;
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|                 case ESM::FourCC<'N','P','C','O'>::value:
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|                     mInventory.add(esm);
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|                     break;
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|                 case ESM::SREC_DELE:
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|                     esm.skipHSub();
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|                     isDeleted = true;
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|                     break;
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|                 default:
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|                     esm.fail("Unknown subrecord");
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|                     break;
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|             }
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|         }
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| 
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|         if (!hasName)
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|             esm.fail("Missing NAME subrecord");
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|         if (!hasWeight && !isDeleted)
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|             esm.fail("Missing CNDT subrecord");
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|         if (!hasFlags && !isDeleted)
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|             esm.fail("Missing FLAG subrecord");
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|     }
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| 
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|     void Container::save(ESMWriter &esm, bool isDeleted) const
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|     {
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|         esm.writeHNCString("NAME", mId);
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| 
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|         if (isDeleted)
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|         {
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|             esm.writeHNString("DELE", "", 3);
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|             return;
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|         }
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| 
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|         esm.writeHNCString("MODL", mModel);
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|         esm.writeHNOCString("FNAM", mName);
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|         esm.writeHNT("CNDT", mWeight, 4);
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|         esm.writeHNT("FLAG", mFlags, 4);
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| 
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|         esm.writeHNOCString("SCRI", mScript);
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| 
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|         mInventory.save(esm);
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|     }
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| 
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|     void Container::blank()
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|     {
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|         mName.clear();
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|         mModel.clear();
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|         mScript.clear();
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|         mWeight = 0;
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|         mFlags = 0x8; // set default flag value
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|         mInventory.mList.clear();
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|     }
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| }
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