public override ArcFile TryOpen(ArcView file)
{
int count = file.View.ReadInt32(4);
if (count <= 0)
{
return(null);
}
uint base_offset = file.View.ReadUInt32(8);
long max_offset = file.MaxOffset;
if (base_offset >= max_offset)
{
return(null);
}
uint cur_offset = 16;
var dir = new List <Entry> (count);
for (int i = 0; i < count; ++i)
{
if (cur_offset + 16 > base_offset)
{
return(null);
}
uint id = file.View.ReadUInt32(cur_offset);
uint offset = file.View.ReadUInt32(cur_offset + 4);
uint size = file.View.ReadUInt32(cur_offset + 8);
uint packed_size = file.View.ReadUInt32(cur_offset + 12);
var entry = new AmiEntry(id, () => {
uint signature = file.View.ReadUInt32(offset);
if (0x00524353 == signature)
{
return("scr");
}
else if (0 != packed_size || 0x00505247 == signature)
{
return("grp");
}
else
{
return("dat");
}
});
entry.Offset = offset;
entry.UnpackedSize = size;
entry.IsPacked = 0 != packed_size;
entry.Size = entry.IsPacked ? packed_size : size;
if (!entry.CheckPlacement(max_offset))
{
return(null);
}
dir.Add(entry);
cur_offset += 16;
}
return(new ArcFile(file, this, dir));
}
public override ArcFile TryOpen(ArcView file)
{
int count = file.View.ReadInt32 (4);
if (count <= 0)
return null;
uint base_offset = file.View.ReadUInt32 (8);
long max_offset = file.MaxOffset;
if (base_offset >= max_offset)
return null;
uint cur_offset = 16;
var dir = new List<Entry> (count);
for (int i = 0; i < count; ++i)
{
if (cur_offset+16 > base_offset)
return null;
uint id = file.View.ReadUInt32 (cur_offset);
uint offset = file.View.ReadUInt32 (cur_offset+4);
uint size = file.View.ReadUInt32 (cur_offset+8);
uint packed_size = file.View.ReadUInt32 (cur_offset+12);
var entry = new AmiEntry (id, () => {
uint signature = file.View.ReadUInt32 (offset);
if (0x00524353 == signature)
return "scr";
else if (0 != packed_size || 0x00505247 == signature)
return "grp";
else
return "dat";
});
entry.Offset = offset;
entry.UnpackedSize = size;
entry.IsPacked = 0 != packed_size;
entry.Size = entry.IsPacked ? packed_size : size;
if (!entry.CheckPlacement (max_offset))
return null;
dir.Add (entry);
cur_offset += 16;
}
return new ArcFile (file, this, dir);
}
