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/*
** Haaf's Game Engine 1.8
** Copyright (C) 2003-2007, Relish Games
** hge.relishgames.com
**
** Core functions implementation: resources management
*/
#include "hge_impl.h"
#define NOCRYPT
//#define NOUNCRYPT
#include "ZLIB\unzip.h"
bool CALL HGE_Impl::Resource_AttachPack(const char *filename, const char *password)
{
char *szName;
CResourceList *resItem=res;
unzFile zip;
szName=Resource_MakePath(filename);
strupr(szName);
while(resItem)
{
if(!strcmp(szName,resItem->filename)) return false;
resItem=resItem->next;
}
zip=unzOpen(szName);
if(!zip) return false;
unzClose(zip);
resItem=new CResourceList;
strcpy(resItem->filename, szName);
if(password) strcpy(resItem->password, password);
else resItem->password[0]=0;
resItem->next=res;
res=resItem;
return true;
}
void CALL HGE_Impl::Resource_RemovePack(const char *filename)
{
char *szName;
CResourceList *resItem=res, *resPrev=0;
szName=Resource_MakePath(filename);
strupr(szName);
while(resItem)
{
if(!strcmp(szName,resItem->filename))
{
if(resPrev) resPrev->next=resItem->next;
else res=resItem->next;
delete resItem;
break;
}
resPrev=resItem;
resItem=resItem->next;
}
}
void CALL HGE_Impl::Resource_RemoveAllPacks()
{
CResourceList *resItem=res, *resNextItem;
while(resItem)
{
resNextItem=resItem->next;
delete resItem;
resItem=resNextItem;
}
res=0;
}
#undef DWORD
void* CALL HGE_Impl::Resource_Load(const char *filename, DWORD *size)
{
static char *res_err="Can't load resource: %s";
CResourceList *resItem=res;
char szName[_MAX_PATH];
char szZipName[_MAX_PATH];
unzFile zip;
unz_file_info file_info;
int done, i;
void *ptr;
HANDLE hF;
if(filename[0]=='\\' || filename[0]=='/' || filename[1]==':') goto _fromfile; // skip absolute paths
// Load from pack
strcpy(szName,filename);
strupr(szName);
for(i=0; szName[i]; i++) { if(szName[i]=='/') szName[i]='\\'; }
while(resItem)
{
zip=unzOpen(resItem->filename);
done=unzGoToFirstFile(zip);
while(done==UNZ_OK)
{
unzGetCurrentFileInfo(zip, &file_info, szZipName, sizeof(szZipName), NULL, 0, NULL, 0);
strupr(szZipName);
for(i=0; szZipName[i]; i++) { if(szZipName[i]=='/') szZipName[i]='\\'; }
if(!strcmp(szName,szZipName))
{
if(unzOpenCurrentFilePassword(zip, resItem->password[0] ? resItem->password : 0) != UNZ_OK)
{
unzClose(zip);
sprintf(szName, res_err, filename);
_PostError(szName);
return 0;
}
ptr = malloc(file_info.uncompressed_size);
if(!ptr)
{
unzCloseCurrentFile(zip);
unzClose(zip);
sprintf(szName, res_err, filename);
_PostError(szName);
return 0;
}
if(unzReadCurrentFile(zip, ptr, file_info.uncompressed_size) < 0)
{
unzCloseCurrentFile(zip);
unzClose(zip);
free(ptr);
sprintf(szName, res_err, filename);
_PostError(szName);
return 0;
}
unzCloseCurrentFile(zip);
unzClose(zip);
if(size) *size=file_info.uncompressed_size;
return ptr;
}
done=unzGoToNextFile(zip);
}
unzClose(zip);
resItem=resItem->next;
}
// Load from file
_fromfile:
hF = CreateFile(Resource_MakePath(filename), GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL | FILE_FLAG_RANDOM_ACCESS, NULL);
if(hF == INVALID_HANDLE_VALUE)
{
sprintf(szName, res_err, filename);
_PostError(szName);
return 0;
}
file_info.uncompressed_size = GetFileSize(hF, NULL);
ptr = malloc(file_info.uncompressed_size);
if(!ptr)
{
CloseHandle(hF);
sprintf(szName, res_err, filename);
_PostError(szName);
return 0;
}
if(ReadFile(hF, ptr, file_info.uncompressed_size, (LPDWORD)&file_info.uncompressed_size, NULL ) == 0)
{
CloseHandle(hF);
free(ptr);
sprintf(szName, res_err, filename);
_PostError(szName);
return 0;
}
CloseHandle(hF);
if(size) *size=file_info.uncompressed_size;
return ptr;
}
void CALL HGE_Impl::Resource_Free(void *res)
{
if(res) free(res);
}
char* CALL HGE_Impl::Resource_MakePath(const char *filename)
{
int i;
if(!filename)
strcpy(szTmpFilename, szAppPath);
else if(filename[0]=='\\' || filename[0]=='/' || filename[1]==':')
strcpy(szTmpFilename, filename);
else
{
strcpy(szTmpFilename, szAppPath);
if(filename) strcat(szTmpFilename, filename);
}
for(i=0; szTmpFilename[i]; i++) { if(szTmpFilename[i]=='/') szTmpFilename[i]='\\'; }
return szTmpFilename;
}
char* CALL HGE_Impl::Resource_EnumFiles(const char *wildcard)
{
if(wildcard)
{
if(hSearch) { FindClose(hSearch); hSearch=0; }
hSearch=FindFirstFile(Resource_MakePath(wildcard), &SearchData);
if(hSearch==INVALID_HANDLE_VALUE) { hSearch=0; return 0; }
if(!(SearchData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)) return SearchData.cFileName;
else return Resource_EnumFiles();
}
else
{
if(!hSearch) return 0;
for(;;)
{
if(!FindNextFile(hSearch, &SearchData)) { FindClose(hSearch); hSearch=0; return 0; }
if(!(SearchData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)) return SearchData.cFileName;
}
}
}
char* CALL HGE_Impl::Resource_EnumFolders(const char *wildcard)
{
if(wildcard)
{
if(hSearch) { FindClose(hSearch); hSearch=0; }
hSearch=FindFirstFile(Resource_MakePath(wildcard), &SearchData);
if(hSearch==INVALID_HANDLE_VALUE) { hSearch=0; return 0; }
if((SearchData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) &&
strcmp(SearchData.cFileName,".") && strcmp(SearchData.cFileName,".."))
return SearchData.cFileName;
else return Resource_EnumFolders();
}
else
{
if(!hSearch) return 0;
for(;;)
{
if(!FindNextFile(hSearch, &SearchData)) { FindClose(hSearch); hSearch=0; return 0; }
if((SearchData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) &&
strcmp(SearchData.cFileName,".") && strcmp(SearchData.cFileName,".."))
return SearchData.cFileName;
}
}
}
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