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My problem is, that I want to parse binary files of different types with a generic parser which is implemented in JAVA. Maybe describing the file format with a configuration file which is read by the parser or creating Java classes which parse the files according to some sort of parsing rules.
I have searched quite a bit on the internet but found almost nothing on this topic.
What I have found are just things which deal with compiler-generators (Jay, Cojen, etc.) but I don't think that I can use them to generate something for parsing binary files. But I could be wrong on that assumption.
Are there any frameworks which deal especially with easy parsing of binary files or can anyone give me a hint how I could use parser/compiler-generators to do so?
Update: I'm looking for something where I can write a config-file like
file:
header: FIXED("MAGIC")
body: content(10)
content:
value1: BYTE
value2: LONG
value3: STRING(10)
and it generates automatically something which parses files which start with "MAGIC", followed by ten times the content-package (which itself consists of a byte, a long and a 10-byte string).
Update2: I found something comparable what I'm looking for, "Construct", but sadly this is a Python-Framework. Maybe this helps someone to get an idea, what I'm looking for.
346
A binary literal is a number that is represented in 0s and 1s (binary digits). Java allows you to express integral types (byte, short, int, and long) in a binary number system. To specify a binary literal, add the prefix 0b or 0B to the integral value.
For example, the Java source programs are stored in text files and can be read by a text editor, but the Java classes are stored in binary files and are read by the JVM.
Using Preon:
public class File {
@BoundString(match="MAGIC")
private String header;
@BoundList(size="10", type=Body.class)
private List<Body> body;
private static class Body {
@Bound
byte value1;
@Bound
long value2;
@BoundString(size="10")
String value3;
}
}
Decoding data:
Codec<File> codec = Codecs.create(File.class);
File file = codecs.decode(codec, buffer);
Let me know if you are running into problems.
157
give a try to preon
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