i need to read a binary file that contains this structure:
struct iqmheader
{
char magic[16]; // the string "INTERQUAKEMODEL\0", 0 terminated
uint version; // must be version 2
uint filesize;
uint flags;
uint num_text, ofs_text;
uint num_meshes, ofs_meshes;
uint num_vertexarrays, num_vertexes, ofs_vertexarrays;
uint num_triangles, ofs_triangles, ofs_adjacency;
uint num_joints, ofs_joints;
uint num_poses, ofs_poses;
uint num_anims, ofs_anims;
uint num_frames, num_framechannels, ofs_frames, ofs_bounds;
uint num_comment, ofs_comment;
uint num_extensions, ofs_extensions;
};
Is there an elegant way of doing this? I tried the javolution lib in that way:
import javolution.io.Struct;
import java.nio.ByteOrder;
public class IqmHeader extends Struct {
public final UTF8String magic = new UTF8String(16);
public final Unsigned8 version = new Unsigned8();
public final Unsigned8 filesize = new Unsigned8();
}
The first 2 values (magic and version) are correct but for the third one i´m already getting 0 which is wrong.
File opened with Hex Editor (first bytes, not whole file):
Here is the output from the hex editor:
49 4E 54 45 52 51 55 41 4B 45 4D 4F 44 45 4C 00 02 00 00 00 10 EF 03 00 00 00 00 00 60 03 00 00 7C 00 00 00 02 00 00 00 DC 03 00 00 06 00 00 00 45 07 00 00 0C 04 00 00 AC 0B 00 00 A0 9B 01 00 B0 27 02 00 4B 00 00 00 C0 B3 02 00 4B 00 00 00 D0 C1 02 00 01 00 00 00 98 DB 02 00 65 00 00 00 4D 01 00 00 AC DB 02 00 70 E2 03 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 42 6F 64
I must admit I dont really know how to read this. The first 16 Bytes is the string followed by "00". Then the Version "02" - here i dont know how many bytes the uint takes
Any suggestions?
Use
DataInputStream
andreadUnsignedByte
,readUnsignedShort
,readUTF
etc to create the structure.You can use a Java class to represent the structure:
You can read an unsigned int like so: