void SetType(AriEntry entry)
{
if (2 == entry.Mode)
{
entry.Type = "audio";
}
else if (1 == entry.Mode)
{
entry.Type = "image";
}
else
{
entry.Type = FormatCatalog.Instance.GetTypeFromName(entry.Name);
}
}
List <Entry> ReadAriIndex(ArcView file, string ari_name)
{
long arc_offset = 4;
using (var ari = VFS.OpenView(ari_name))
{
long index_offset = 0;
while (index_offset + 4 < ari.MaxOffset)
{
int name_len = ari.View.ReadInt32(index_offset);
var name = ReadName(ari, index_offset + 4, name_len);
if (null == name)
{
return(null);
}
var entry = new AriEntry {
Name = name
};
index_offset += name_len + 4;
entry.Mode = ari.View.ReadUInt16(index_offset);
entry.Size = ari.View.ReadUInt32(index_offset + 2);
entry.UnpackedSize = 0;
SetType(entry);
index_offset += 6;
arc_offset += name_len + 10;
if (1 == entry.Mode)
{
entry.IsPacked = true;
arc_offset += 4;
}
entry.Offset = arc_offset;
if (!entry.CheckPlacement(file.MaxOffset))
{
return(null);
}
arc_offset += entry.Size;
m_dir.Add(entry);
}
}
return(m_dir);
}
List <Entry> BuildIndex(ArcView file)
{
long arc_offset = 4;
while (arc_offset + 4 < file.MaxOffset)
{
int name_len = file.View.ReadInt32(arc_offset);
var name = ReadName(file, arc_offset + 4, name_len);
if (null == name)
{
return(null);
}
var entry = new AriEntry {
Name = name
};
arc_offset += name_len + 4;
entry.Mode = file.View.ReadUInt16(arc_offset);
entry.Size = file.View.ReadUInt32(arc_offset + 2);
SetType(entry);
arc_offset += 6;
if (1 == entry.Mode)
{
entry.IsPacked = true;
entry.UnpackedSize = file.View.ReadUInt32(arc_offset);
arc_offset += 4;
}
entry.Offset = arc_offset;
if (!entry.CheckPlacement(file.MaxOffset))
{
return(null);
}
arc_offset += entry.Size;
m_dir.Add(entry);
}
return(m_dir);
}
