mirror of
https://github.com/ondra-novak/gates_of_skeldal.git
synced 2025-07-05 06:00:33 -04:00
93 lines
2.2 KiB
C++
93 lines
2.2 KiB
C++
#include "stdafx.h"
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#include ".\ddlfile.h"
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DDLFile::DDLFile(void)
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{
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_hFile=0;
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}
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DDLFile::~DDLFile(void)
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{
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if (_hFile!=0) CloseHandle(_hFile);
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}
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bool DDLFile::OpenDDLFile(WString filename)
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{
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_hFile=CreateFile(filename,GENERIC_READ,FILE_SHARE_READ|FILE_SHARE_WRITE,NULL,
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OPEN_EXISTING,FILE_FLAG_RANDOM_ACCESS,NULL);
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if (_hFile==INVALID_HANDLE_VALUE)
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{
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_hFile=0;
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return false;
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}
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return true;
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}
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bool DDLFile::ReadFile(void *data, size_t sz)
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{
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DWORD readed=0;
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if (::ReadFile(_hFile,data,sz,&readed,NULL)==FALSE) return false;
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if (readed!=sz) return false;
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return true;
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}
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bool DDLFile::EnumFiles(IDDLFileEnumerator &enmClass)
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{
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uint32_t firstGroup;
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uint32_t groupEndOffset;
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uint32_t endGroups;
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int i;
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int ngroups;
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SetFilePointer(_hFile,0,0,FILE_BEGIN);
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if (ReadFile(&firstGroup,sizeof(firstGroup))==false) return false;
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if (ReadFile(&groupEndOffset,sizeof(firstGroup))==false) return false;
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uint32_t *group=(uint32_t *)alloca(groupEndOffset);
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group[0]=firstGroup;
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group[1]=groupEndOffset;
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ngroups=groupEndOffset/8;
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if (groupEndOffset!=8 && ReadFile(group+2,groupEndOffset-8)==false) return false;
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SetFilePointer(_hFile,12,0,FILE_CURRENT);
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if (ReadFile(&endGroups,sizeof(endGroups))==false) return false;
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for (i=0;i<ngroups && group[i*2+1]<endGroups;i++);
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ngroups=i;
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WString fname;
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for (i=0;i<ngroups;i++)
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{
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uint32_t endGroup=(i+1)<ngroups?group[i*2+3]:endGroups;
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SetFilePointer(_hFile,group[i*2+1],0,FILE_BEGIN);
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uint32_t pos=group[i*2+1];
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while (pos<endGroup)
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{
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char buff[13];
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uint32_t offset;
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if (ReadFile(buff,12)==false) return false;
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if (ReadFile(&offset,4)==false) return false;
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buff[12]=0;
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fname.SetUTF8(buff);
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enmClass.File(fname,group[i*2],offset);
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pos+=12+4;
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}
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}
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return true;
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}
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uint32_t DDLFile::GetFileSize(uint32_t offset)
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{
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uint32_t sz=0;
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SetFilePointer(_hFile,offset,0,FILE_BEGIN);
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ReadFile(&sz,4);
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return sz;
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}
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DDLData DDLFile::ExtractFile(uint32_t offset)
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{
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SetFilePointer(_hFile,offset,0,FILE_BEGIN);
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DDLData data;
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if (ReadFile(&data.sz,4)==false) return DDLData();
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data.data=malloc(data.sz);
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if (ReadFile(data.data,data.sz)==false) return DDLData();
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return data;
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}
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