kaitai: adjustments and rearrangements for python2/3 compat

1 files changed, 116 insertions, 0 deletions

diff --git a/python/examples/kaitai/mbr_partition_table.py b/python/examples/kaitai/mbr_partition_table.py
new file mode 100644
index 00000000..710fa3d7
--- /dev/null
+++ b/python/examples/kaitai/mbr_partition_table.py
@@ -0,0 +1,116 @@
+# This is a generated file! Please edit source .ksy file and use kaitai-struct-compiler to rebuild
+
+from pkg_resources import parse_version
+from .kaitaistruct import __version__ as ks_version, KaitaiStruct, KaitaiStream, BytesIO
+import collections
+
+
+if parse_version(ks_version) < parse_version('0.7'):
+    raise Exception("Incompatible Kaitai Struct Python API: 0.7 or later is required, but you have %s" % (ks_version))
+
+class MbrPartitionTable(KaitaiStruct):
+    """MBR (Master Boot Record) partition table is a traditional way of
+    MS-DOS to partition larger hard disc drives into distinct
+    partitions.
+    
+    This table is stored in the end of the boot sector (first sector) of
+    the drive, after the bootstrap code. Original DOS 2.0 specification
+    allowed only 4 partitions per disc, but DOS 3.2 introduced concept
+    of "extended partitions", which work as nested extra "boot records"
+    which are pointed to by original ("primary") partitions in MBR.
+    """
+    SEQ_FIELDS = ["bootstrap_code", "partitions", "boot_signature"]
+    def __init__(self, _io, _parent=None, _root=None):
+        self._io = _io
+        self._parent = _parent
+        self._root = _root if _root else self
+        self._debug = collections.defaultdict(dict)
+
+    def _read(self):
+        self._debug['bootstrap_code']['start'] = self._io.pos()
+        self.bootstrap_code = self._io.read_bytes(446)
+        self._debug['bootstrap_code']['end'] = self._io.pos()
+        self._debug['partitions']['start'] = self._io.pos()
+        self.partitions = [None] * (4)
+        for i in range(4):
+            if not 'arr' in self._debug['partitions']:
+                self._debug['partitions']['arr'] = []
+            self._debug['partitions']['arr'].append({'start': self._io.pos()})
+            _t_partitions = self._root.PartitionEntry(self._io, self, self._root)
+            _t_partitions._read()
+            self.partitions[i] = _t_partitions
+            self._debug['partitions']['arr'][i]['end'] = self._io.pos()
+
+        self._debug['partitions']['end'] = self._io.pos()
+        self._debug['boot_signature']['start'] = self._io.pos()
+        self.boot_signature = self._io.ensure_fixed_contents(b"\x55\xAA")
+        self._debug['boot_signature']['end'] = self._io.pos()
+
+    class PartitionEntry(KaitaiStruct):
+        SEQ_FIELDS = ["status", "chs_start", "partition_type", "chs_end", "lba_start", "num_sectors"]
+        def __init__(self, _io, _parent=None, _root=None):
+            self._io = _io
+            self._parent = _parent
+            self._root = _root if _root else self
+            self._debug = collections.defaultdict(dict)
+
+        def _read(self):
+            self._debug['status']['start'] = self._io.pos()
+            self.status = self._io.read_u1()
+            self._debug['status']['end'] = self._io.pos()
+            self._debug['chs_start']['start'] = self._io.pos()
+            self.chs_start = self._root.Chs(self._io, self, self._root)
+            self.chs_start._read()
+            self._debug['chs_start']['end'] = self._io.pos()
+            self._debug['partition_type']['start'] = self._io.pos()
+            self.partition_type = self._io.read_u1()
+            self._debug['partition_type']['end'] = self._io.pos()
+            self._debug['chs_end']['start'] = self._io.pos()
+            self.chs_end = self._root.Chs(self._io, self, self._root)
+            self.chs_end._read()
+            self._debug['chs_end']['end'] = self._io.pos()
+            self._debug['lba_start']['start'] = self._io.pos()
+            self.lba_start = self._io.read_u4le()
+            self._debug['lba_start']['end'] = self._io.pos()
+            self._debug['num_sectors']['start'] = self._io.pos()
+            self.num_sectors = self._io.read_u4le()
+            self._debug['num_sectors']['end'] = self._io.pos()
+
+
+    class Chs(KaitaiStruct):
+        SEQ_FIELDS = ["head", "b2", "b3"]
+        def __init__(self, _io, _parent=None, _root=None):
+            self._io = _io
+            self._parent = _parent
+            self._root = _root if _root else self
+            self._debug = collections.defaultdict(dict)
+
+        def _read(self):
+            self._debug['head']['start'] = self._io.pos()
+            self.head = self._io.read_u1()
+            self._debug['head']['end'] = self._io.pos()
+            self._debug['b2']['start'] = self._io.pos()
+            self.b2 = self._io.read_u1()
+            self._debug['b2']['end'] = self._io.pos()
+            self._debug['b3']['start'] = self._io.pos()
+            self.b3 = self._io.read_u1()
+            self._debug['b3']['end'] = self._io.pos()
+
+        @property
+        def sector(self):
+            if hasattr(self, '_m_sector'):
+                return self._m_sector if hasattr(self, '_m_sector') else None
+
+            self._m_sector = (self.b2 & 63)
+            return self._m_sector if hasattr(self, '_m_sector') else None
+
+        @property
+        def cylinder(self):
+            if hasattr(self, '_m_cylinder'):
+                return self._m_cylinder if hasattr(self, '_m_cylinder') else None
+
+            self._m_cylinder = (self.b3 + ((self.b2 & 192) << 2))
+            return self._m_cylinder if hasattr(self, '_m_cylinder') else None
+
+
+