--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/python/utils/iso9660.py	Sun Nov 24 11:24:15 2013 +0100
@@ -0,0 +1,82 @@
+#!/usr/bin/env python
+
+import argparse
+
+__doc__ = """
+  ISO 9660 filesystem utility.
+"""
+
+
+class VolumeDescriptor:
+    @classmethod
+    def FromData(cls, d):
+        ty = d[0]
+        Id = d[1:6]
+        assert Id == 'CD001'.encode('ascii')
+        ver = d[6]
+        assert ver == 1
+        cls = vol_desc_types[ty]
+        return cls(d)
+
+
+vol_desc_types = {}
+def vol_type(t):
+    def reg_func(cls):
+        vol_desc_types[t] = cls
+        return cls
+    return reg_func
+
+
+@vol_type(0)
+class BootRecordVolumeDescriptor(VolumeDescriptor):
+    def __init__(self, d):
+        boot_sys_id = d[7:39]
+        boot_id = d[39:71]
+        print(boot_sys_id)
+        print(boot_id)
+
+
+@vol_type(1)
+class PrimaryVolumeDescriptor(VolumeDescriptor):
+    def __init__(self, d):
+        sys_id = d[8:40]
+        vol_id = d[40:72]
+        print(sys_id)
+        print(vol_id)
+
+
+@vol_type(255)
+class VolumeDescriptorTerminator(VolumeDescriptor):
+    def __init__(self, d):
+        pass
+
+
+class ISOfs:
+    def __init__(self):
+        self.vol_descriptors = []
+
+    def read(self, f):
+        # System area:
+        self.system_area = f.read(16 * 2048)
+        while True:
+            d = f.read(2048)
+            desc = VolumeDescriptor.FromData(d)
+            self.vol_descriptors.append(desc)
+            if type(desc) is VolumeDescriptorTerminator:
+                break
+
+    def dump(self):
+        for vd in self.vol_descriptors:
+            print(vd)
+
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser(description=__doc__)
+    parser.add_argument('filename')
+    args = parser.parse_args()
+    fs = ISOfs()
+    with open(args.filename, 'rb') as f:
+        fs.read(f)
+    fs.dump()
+
+