internal Func <int, string> CreateEntryNameDelegate(string arc_name)
{
var index = Sec5Opener.LookupIndex(arc_name);
string base_name = Path.GetFileNameWithoutExtension(arc_name);
if (null == index)
{
return(n => GetDefaultName(base_name, n));
}
else
{
return (n) => {
Entry entry;
if (index.TryGetValue(n, out entry))
{
return entry.Name;
}
return GetDefaultName(base_name, n);
}
};
}
public override ArcFile TryOpen(ArcView file)
{
int version = file.View.ReadInt16(4);
if (version < 1 || version > 4)
{
return(null);
}
int file_count = file.View.ReadInt32(0x18);
int count = file.View.ReadInt32(0x1C);
if (count < file_count || !IsSaneCount(count))
{
return(null);
}
var index = Sec5Opener.LookupIndex(file.Name);
string base_name = Path.GetFileNameWithoutExtension(file.Name);
Func <int, Entry> CreateEntry;
if (null == index)
{
CreateEntry = n => GetDefaultEntry(base_name, n);
}
else
{
CreateEntry = (n) => {
Entry entry;
if (index.TryGetValue(n, out entry))
{
return new Entry {
Name = entry.Name, Type = entry.Type
}
}
;
return(GetDefaultEntry(base_name, n));
}
};
uint offset_size = version < 3 ? 4u : 8u;
Func <uint, long> ReadOffset;
if (version < 3)
{
ReadOffset = x => file.View.ReadUInt32(x);
}
else
{
ReadOffset = x => file.View.ReadInt64(x);
}
uint index_offset = 0x20;
var dir = new List <Entry> (count);
var next_offset = ReadOffset(index_offset);
for (int i = 0; i < count; ++i)
{
var entry = CreateEntry(i);
entry.Offset = next_offset;
index_offset += offset_size;
next_offset = (i + 1) == count ? file.MaxOffset : ReadOffset(index_offset);
entry.Size = (uint)(next_offset - entry.Offset);
if (!entry.CheckPlacement(file.MaxOffset))
{
return(null);
}
dir.Add(entry);
}
return(new IarArchive(file, this, dir, version));
}