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); } } }