MemHandle CPWad::Read (XString item)
{
CDirEntry *entry = (CDirEntry *)directory[item];
if (entry)
{
file.Seek (entry->Offset());
MemHandle data = file.Read ((size_t)entry->Size());
if (data.Size() == (size_t) entry->Size())
return data;
}
return 0;
}
MemHandle CPWad::Read (XString map, XString item)
{
CDirEntry *entry = (CDirEntry *)directory[map];
if (entry)
{
entry = (CDirEntry *)entry->subdir[item];
if (entry)
{
file.Seek (entry->Offset());
MemHandle data = file.Read ((size_t)entry->Size());
if (data.Size() == (size_t) entry->Size())
{
cdebug.out << "Read From PWAD " << map << " " << item << " " << data.Size() << " bytes" << endl;
return data;
}
}
}
cerr << "Read From PWAD " << map << " " << item << " FAILED!! " << endl;
cdebug.out << "Read From PWAD " << map << " " << item << " FAILED!! " << endl;
return 0;
}
int CPWad::Write (MemHandle data, XString map, XString item)
{
CDirEntry *entry = (CDirEntry *)directory[map];
if (entry)
{
entry = (CDirEntry *)entry->subdir[item];
if (entry)
{
file.Seek (entry->Offset());
if (data.Size() == (size_t) entry->Size())
{
int status = file.Write (data);
cdebug.out << "Write to PWAD " << map << " " << item << " " << data.Size() << " bytes" << endl;
return status;
}
}
}
cerr << "Write to PWAD " << map << " " << item << " FAILED!! " << endl;
cdebug.out << "Write to PWAD " << map << " " << item << " FAILED!! " << endl;
return -1;
}
CPWad::CPWad (XString name)
: file (name, O_RDWR | O_BINARY), currentmap(0)
{
if (file.IsOpen())
{
// -=- read the pwad header -=-
cout << "Opened '" << name << "'" << endl;
cdebug.out << "Opened '" << name << "'" << endl;
file.Read (&header, sizeof(PWAD_HEADER));
swaplong((int *)&(header.dir_offset));
swaplong((int *)&(header.dir_entries));
if (memcmp ("PWAD", header.signature, 4) != 0)
{
cout << "Not a PWAD!" << "\n";
cdebug.out << "Not a PWAD!" << "\n";
Fail ();
return;
}
else
{
cdebug.out << "File size: " << file.Size() << endl;
cdebug.out << "Directory Offset: " << header.dir_offset << endl;
cdebug.out << "Directory Entries: " << header.dir_entries << endl;
}
// -=- read the directory -=-
file.Seek (header.dir_offset);
MemHandle dirbuff = file.Read ((size_t)(header.dir_entries * sizeof(DIR_ENTRY)));
if (dirbuff.Size () != (header.dir_entries * sizeof(DIR_ENTRY)))
{
cout << "Error Reading PWAD Directory." << endl;
cdebug.out << "Error Reading PWAD Directory." << endl;
Fail ();
}
else
{
cout << "Building directory...." << flush;
swap_lump_list((void *)dirbuff.Buffer(), header.dir_entries);
// -=- go through each dir entry and add it to our internal dir -=-
DIR_ENTRY *entry_ptr = (DIR_ENTRY *)dirbuff.Buffer();
for (int n = 0; n < header.dir_entries; n++)
{
AddEntry (entry_ptr[n]);
}
cout << "Done." << endl;
// -=- print out directory used for debugging -=-
CDirEntry *de;
CDirEntry *sde;
de = (CDirEntry *)directory.FirstItem ();
while (de)
{
cdebug.out << de->GetKey() << " " << de->Size() << " bytes\t @" << de->Offset() << endl;
sde = (CDirEntry *)de->subdir.FirstItem ();
while (sde)
{
cdebug.out << " " << sde->GetKey() << " " << sde->Size() << " bytes\t @" << sde->Offset() << endl;
sde = (CDirEntry *)sde->Next();
}
de = (CDirEntry *)de->Next();
}
// -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
}
}
else
{
cout << "Cannot open '" << name << "'" << endl;
cdebug.out << "Cannot open '" << name << "'" << endl;
Fail ();
}
}
