internal MacResource(Stream input, String type, String name, int id)
{
this.type = type;
this.name = name;
this.id = id;
byte[] buf = new byte[4];
if (input.Read(buf, 0, 4) != 4)
{
throw new MacResourceForkException("Could not read resource length.");
}
int datalen = MacUtil.read32(buf, 0);
data = new byte[datalen];
if (input.Read(data, 0, datalen) != datalen)
{
throw new MacResourceForkException("Could not read resource data.");
}
}
public MacBinary(Stream input)
{
byte[] buf = new byte[128];
if (input.Read(buf, 0, 128) != 128)
{
throw new MacBinaryException("Could not read header.");
}
version = Version.MacBinaryIII;
// Version
if (buf[0] != 0)
{
throw new MacBinaryException("Incompatible version.");
}
// Signature 'mBIN'
if (buf[102] != 'm' || buf[103] != 'B' || buf[104] != 'I' || buf[105] != 'N')
{
version = Version.MacBinaryII;
}
// Zero padding
if (buf[74] != 0 || buf[82] != 0 || buf[126] != 0 || buf[127] != 0)
{
throw new MacBinaryException("Zero padding is not zero.");
}
// MacBinary version of this file.
if (version == Version.MacBinaryII && buf[122] != 129)
{
throw new MacBinaryException("Version field corrupt for a MacBinary II file.");
}
if (version == Version.MacBinaryIII && buf[122] != 130)
{
if (buf[122] == 129)
{
version = Version.MacBinaryII;
}
else
{
throw new MacBinaryException("Version field corrupt for a MacBinary III file.");
}
}
// CRC at the end of the header
int crc = MacUtil.read16(buf, 124);
// FIXME: check CRC
if (crc == 0)
{
version = Version.MacBinaryI;
}
// File name
int namelen = buf[1];
if (namelen < 1 || namelen > 63)
{
throw new MacBinaryException("Invalid file length.");
}
filename = MacUtil.readString(buf, 2, namelen);
// File type
filetype = MacUtil.readString(buf, 65, 4);
// File creator
filecreator = MacUtil.readString(buf, 69, 4);
// Finder flags
finderflags = buf[73];
// Window position
windowposy = MacUtil.read16(buf, 75);
windowposx = MacUtil.read16(buf, 77);
// Window or folder ID
windowid = MacUtil.read16(buf, 79);
// Protected flag
protectedflag = (buf[81] & 1) == 1;
// Data en resource fork lengths
int datlen = MacUtil.read32(buf, 83);
int reslen = MacUtil.read32(buf, 87);
// Creation and modification dates
ctime = MacUtil.read32(buf, 91);
mtime = MacUtil.read32(buf, 95);
int commentlen = 0;
int secheaderlen = 0;
if (version != Version.MacBinaryI)
{
// Get Info comment length
commentlen = MacUtil.read16(buf, 99);
// Finder flags
finderflags2 = buf[101];
if (version != Version.MacBinaryII)
{
// Finder fxInfo fields
fxScript = buf[106];
fdXFlags = buf[107];
}
// Length of total files when packed files are unpacked. (never really used)
//int unpackedlen = read32(buf, 117);
// Length of secondary header.
secheaderlen = MacUtil.read16(buf, 120);
// Minimum version to support in order to read this file (ignored)
//int minversion = buf[123];
}
// Skip the secondary header
if (secheaderlen > 0)
{
// Round up to 128 bytes
secheaderlen = (int)Math.Ceiling((double)secheaderlen / 128) * 128;
input.Seek(secheaderlen, SeekOrigin.Current);
}
// Read data fork
dat = new byte[datlen];
if (input.Read(dat, 0, datlen) != datlen)
{
throw new MacBinaryException("Could not read data fork.");
}
// Round up to 128 bytes and skip padding
long temp = (int)Math.Ceiling((double)datlen / 128) * 128 - datlen;
input.Seek(temp, SeekOrigin.Current);
// Read the resource fork
temp = input.Position + (int)Math.Ceiling((double)reslen / 128) * 128;
res = new MacResourceFork(input);
input.Seek(temp, SeekOrigin.Begin);
if (commentlen > 0)
{
buf = new byte[commentlen];
if (input.Read(buf, 0, commentlen) != commentlen)
{
throw new MacBinaryException("Could not read Get Info comment.");
}
comment = MacUtil.readString(buf, 0, commentlen);
}
}
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);
}
}
}