Virgin import of Christos Zoulas's FILE 4.19.

1 files changed, 21 insertions, 0 deletions

diff --git a/contrib/file/Magdir/cafebabe b/contrib/file/Magdir/cafebabe
new file mode 100644
index 0000000..233411c
--- /dev/null
+++ b/contrib/file/Magdir/cafebabe
@@ -0,0 +1,21 @@
+#------------------------------------------------------------------------------
+# Cafe Babes unite!
+#
+# Since Java bytecode and Mach-O fat-files have the same magic number, the test
+# must be performed in the same "magic" sequence to get both right.  The long
+# at offset 4 in a mach-O fat file tells the number of architectures; the short at
+# offset 4 in a Java bytecode file is the JVM minor version and the
+# short at offset 6 is the JVM major version.  Since there are only 
+# only 18 labeled Mach-O architectures at current, and the first released 
+# Java class format was version 43.0, we can safely choose any number
+# between 18 and 39 to test the number of architectures against
+# (and use as a hack). Let's not use 18, because the Mach-O people
+# might add another one or two as time goes by...
+#
+0	belong		0xcafebabe
+>4	belong		>30		compiled Java class data,
+>>6     beshort		x	        version %d.
+>>4     beshort		x       	\b%d
+>4	belong		1		Mach-O fat file with 1 architecture
+>4	belong		>1
+>>4	belong		<20		Mach-O fat file with %ld architectures