cafebabe revision 191736 
1#------------------------------------------------------------------------------
2# Cafe Babes unite!
3#
4# Since Java bytecode and Mach-O fat-files have the same magic number, the test
5# must be performed in the same "magic" sequence to get both right.  The long
6# at offset 4 in a mach-O fat file tells the number of architectures; the short at
7# offset 4 in a Java bytecode file is the JVM minor version and the
8# short at offset 6 is the JVM major version.  Since there are only 
9# only 18 labeled Mach-O architectures at current, and the first released 
10# Java class format was version 43.0, we can safely choose any number
11# between 18 and 39 to test the number of architectures against
12# (and use as a hack). Let's not use 18, because the Mach-O people
13# might add another one or two as time goes by...
14#
150	belong		0xcafebabe
16!:mime	application/x-java-applet
17>4	belong		>30		compiled Java class data,
18>>6	beshort		x	        version %d.
19>>4	beshort		x       	\b%d
20
210	belong		0xcafebabe
22>4	belong		1		Mach-O fat file with 1 architecture
23>4	belong		>1
24>>4	belong		<20		Mach-O fat file with %ld architectures
25
260	belong		0xcafed00d	JAR compressed with pack200,
27>>5	byte		x		version %d.
28>>4	byte		x		\b%d
29!:mime	application/x-java-pack200
30