internal void Add(MacResource res)
{
resources.Add(res.id, res);
}
public MacResourceFork(Stream input)
{
long start = input.Position;
byte[] buf;
// Read the resource fork header
buf = new byte[16];
if (input.Read(buf, 0, 16) != 16)
{
throw new MacResourceForkException("Could not read header.");
}
long dataoffset = start + MacUtil.read32(buf, 0);
long mapoffset = start + MacUtil.read32(buf, 4);
long typelistoffset, namelistoffset;
byte[] typelist;
{
// Seek to the resource map
input.Seek(mapoffset, SeekOrigin.Begin);
// Read the resource map header
buf = new byte[30];
if (input.Read(buf, 0, 30) != 30)
{
throw new MacResourceForkException("Could not read resource map header.");
}
typelistoffset = mapoffset + MacUtil.read16(buf, 24);
namelistoffset = mapoffset + MacUtil.read16(buf, 26);
int numtypes = MacUtil.read16(buf, 28) + 1;
// Create the types dictionary
types = new Dictionary <string, MacResourceType>(numtypes);
// Read the resource type list
int listlen = numtypes * 8;
typelist = new byte[listlen];
if (input.Read(typelist, 0, listlen) != listlen)
{
throw new MacResourceForkException("Could not read resource type list header.");
}
}
// Walk the resource type list
for (int i = 0; i < typelist.Length; i += 8)
{
MacResourceType type;
long reflistoffset;
byte[] reflist;
{
// Read the resource type list entry
String typename = MacUtil.readString(typelist, i, 4);
int numresources = MacUtil.read16(typelist, i + 4);
reflistoffset = typelistoffset + MacUtil.read16(typelist, i + 6);
// Create the resource type
type = new MacResourceType(typename, numresources);
types.Add(typename, type);
// Seek to the reference list for this type
input.Seek(reflistoffset, SeekOrigin.Begin);
// Read the reference list
int listlen = numresources * 12;
reflist = new byte[listlen];
if (input.Read(reflist, 0, listlen) != listlen)
{
throw new MacResourceForkException("Could not read the reference list.");
}
}
for (int j = 0; j < reflist.Length; j += 12)
{
// Read the reference list entry
int id = MacUtil.read16(reflist, j);
long resnameoffset = MacUtil.read16(reflist, j + 2);
long resdataoffset = dataoffset + MacUtil.read24(reflist, j + 5);
String name = null;
if (resnameoffset != -1)
{
// Seek to the name list entry
resnameoffset += namelistoffset;
input.Seek(resnameoffset, SeekOrigin.Begin);
// Read the resource name
int resnamelen = input.ReadByte();
buf = new byte[resnamelen];
if (input.Read(buf, 0, resnamelen) != resnamelen)
{
throw new MacResourceForkException("Could not read resource name.");
}
name = MacUtil.readString(buf, 0, resnamelen);
}
// Seek to the resource data
input.Seek(resdataoffset, SeekOrigin.Begin);
// Create the resource
MacResource res = new MacResource(input, type.type, name, id);
type.Add(res);
}
}
}
public MacResourceFork(Stream input)
{
long start = input.Position;
byte[] buf;
// Read the resource fork header
buf = new byte[16];
if (input.Read(buf, 0, 16) != 16)
throw new MacResourceForkException("Could not read header.");
long dataoffset = start + MacUtil.read32(buf, 0);
long mapoffset = start + MacUtil.read32(buf, 4);
long typelistoffset, namelistoffset;
byte[] typelist;
{
// Seek to the resource map
input.Seek(mapoffset, SeekOrigin.Begin);
// Read the resource map header
buf = new byte[30];
if (input.Read(buf, 0, 30) != 30)
throw new MacResourceForkException("Could not read resource map header.");
typelistoffset = mapoffset + MacUtil.read16(buf, 24);
namelistoffset = mapoffset + MacUtil.read16(buf, 26);
int numtypes = MacUtil.read16(buf, 28) + 1;
// Create the types dictionary
types = new Dictionary<string,MacResourceType>(numtypes);
// Read the resource type list
int listlen = numtypes * 8;
typelist = new byte[listlen];
if (input.Read(typelist, 0, listlen) != listlen)
throw new MacResourceForkException("Could not read resource type list header.");
}
// Walk the resource type list
for (int i = 0; i < typelist.Length; i += 8)
{
MacResourceType type;
long reflistoffset;
byte[] reflist;
{
// Read the resource type list entry
String typename = MacUtil.readString(typelist, i, 4);
int numresources = MacUtil.read16(typelist, i + 4);
reflistoffset = typelistoffset + MacUtil.read16(typelist, i + 6);
// Create the resource type
type = new MacResourceType(typename, numresources);
types.Add(typename, type);
// Seek to the reference list for this type
input.Seek(reflistoffset, SeekOrigin.Begin);
// Read the reference list
int listlen = numresources * 12;
reflist = new byte[listlen];
if (input.Read(reflist, 0, listlen) != listlen)
throw new MacResourceForkException("Could not read the reference list.");
}
for (int j = 0; j < reflist.Length; j += 12)
{
// Read the reference list entry
int id = MacUtil.read16(reflist, j);
long resnameoffset = MacUtil.read16(reflist, j + 2);
long resdataoffset = dataoffset + MacUtil.read24(reflist, j + 5);
String name = null;
if (resnameoffset != -1)
{
// Seek to the name list entry
resnameoffset += namelistoffset;
input.Seek(resnameoffset, SeekOrigin.Begin);
// Read the resource name
int resnamelen = input.ReadByte();
buf = new byte[resnamelen];
if (input.Read(buf, 0, resnamelen) != resnamelen)
throw new MacResourceForkException("Could not read resource name.");
name = MacUtil.readString(buf, 0, resnamelen);
}
// Seek to the resource data
input.Seek(resdataoffset, SeekOrigin.Begin);
// Create the resource
MacResource res = new MacResource(input, type.type, name, id);
type.Add(res);
}
}
}
internal void Add(MacResource res)
{
resources.Add(res.id, res);
}
