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Move 2mg parsing further down

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This codebase is rapidly getting to the point it's going to need modules and a
package.  Let's move some logically related code for that purpose.
This commit is contained in:
T. Joseph Carter 2017-07-02 15:41:24 -07:00
parent c20adbabfb
commit 490d7e8224
1 changed files with 33 additions and 34 deletions
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@ -40,40 +40,6 @@ import struct
from collections import namedtuple
from binascii import a2b_hex, b2a_hex
A2MG1_UNPACK = (
'<' # use little-endian numbers
'4s' # magic string '2IMG'
'4s' # creator string
'H' # header length
'H' # 2mg version
'L' # image format
'L' # flags (we unpack it into "vol")
'L' # number of 512 blocks
'L' # image data offset
'L' # image data length
'L' # comment offset
'L' # comment length
'L' # creator private use offset
'L' # creator private use length
'16x' # reserved for future use
)
A2MG1_ATTRS = (
'magic', 'creator', 'hdr_len', 'version',
'img_fmt', 'vol', 'num_blocks',
'data_offset', 'data_len',
'cmnt_offset', 'cmnt_len',
'creator_offset', 'creator_len'
)
A2MG1_VOL_ATTRS = ('locked', 'dosvol')
# We assume 2mg files with unknown version have these fields
A2MG_UNK_ATTRS = ('magic', 'creator', 'hdr_len', 'version')
A2mg1 = namedtuple('A2mg1', A2MG1_ATTRS)
A2mg1Vol = namedtuple('A2mg1Vol', A2MG1_VOL_ATTRS)
A2mgUnk = namedtuple('A2mgUnk', A2MG_UNK_ATTRS)
class Globals:
pass
@ -940,6 +906,39 @@ def isnumber(number):
### NEW DISK CLASSES
A2MG1_UNPACK = (
'<' # use little-endian numbers
'4s' # magic string '2IMG'
'4s' # creator string
'H' # header length
'H' # 2mg version
'L' # image format
'L' # flags (we unpack it into "vol")
'L' # number of 512 blocks
'L' # image data offset
'L' # image data length
'L' # comment offset
'L' # comment length
'L' # creator private use offset
'L' # creator private use length
'16x' # reserved for future use
)
A2MG1_ATTRS = (
'magic', 'creator', 'hdr_len', 'version',
'img_fmt', 'vol', 'num_blocks',
'data_offset', 'data_len',
'cmnt_offset', 'cmnt_len',
'creator_offset', 'creator_len'
)
A2MG1_VOL_ATTRS = ('locked', 'dosvol')
# We assume 2mg files with unknown version have these fields
A2MG_UNK_ATTRS = ('magic', 'creator', 'hdr_len', 'version')
A2mg1 = namedtuple('A2mg1', A2MG1_ATTRS)
A2mg1Vol = namedtuple('A2mg1Vol', A2MG1_VOL_ATTRS)
A2mgUnk = namedtuple('A2mgUnk', A2MG_UNK_ATTRS)
class Disk:
def __init__(self, name=None):
if name is not None: