def find_next_tag(self):
while iou.read_byte(self.f, "big") not in (20, 21):
continue
location = self.f.tell() - 1
self.f.seek(location)
tag_id = iou.read_byte(self.f, "big")
self.f.seek(location)
tag_header = self.parse_tag_header()
if tag_id == 20:
_logger.debug("Tag header length", tag_header['tag_name_length'])
if not 20 > tag_header['tag_name_length'] > 0:
_logger.debug("Skipping id 20")
self.f.seek(location + 1)
self.find_next_tag()
else:
self.f.seek(location)
return
else:
try:
self.check_data_tag_delimiter()
self.f.seek(location)
return
except DM3TagTypeError:
self.f.seek(location + 1)
_logger.debug("Skipping id 21")
self.find_next_tag()
def find_next_tag(self):
while iou.read_byte(self.f, "big") not in (20, 21):
continue
location = self.f.tell() - 1
self.f.seek(location)
tag_id = iou.read_byte(self.f, "big")
self.f.seek(location)
tag_header = self.parse_tag_header()
if tag_id == 20:
_logger.debug("Tag header length", tag_header['tag_name_length'])
if not 20 > tag_header['tag_name_length'] > 0:
_logger.debug("Skipping id 20")
self.f.seek(location + 1)
self.find_next_tag()
else:
self.f.seek(location)
return
else:
try:
self.check_data_tag_delimiter()
self.f.seek(location)
return
except DM3TagTypeError:
self.f.seek(location + 1)
_logger.debug("Skipping id 21")
self.find_next_tag()
def parse_tag_group(self, skip4=1):
"""Parse the root TagGroup of the given DM3 file f.
Returns the tuple (is_sorted, is_open, n_tags).
endian can be either 'big' or 'little'.
"""
is_sorted = iou.read_byte(self.f, "big")
is_open = iou.read_byte(self.f, "big")
self.skipif4(n=skip4)
n_tags = iou.read_long(self.f, "big")
return bool(is_sorted), bool(is_open), n_tags
def parse_tag_group(self, skip4=1):
"""Parse the root TagGroup of the given DM3 file f.
Returns the tuple (is_sorted, is_open, n_tags).
endian can be either 'big' or 'little'.
"""
is_sorted = iou.read_byte(self.f, "big")
is_open = iou.read_byte(self.f, "big")
self.skipif4(n=skip4)
n_tags = iou.read_long(self.f, "big")
return bool(is_sorted), bool(is_open), n_tags
def parse_tag_group(self, size=False):
"""Parse the root TagGroup of the given DM3 file f.
Returns the tuple (is_sorted, is_open, n_tags).
endian can be either 'big' or 'little'.
"""
is_sorted = iou.read_byte(self.f, "big")
is_open = iou.read_byte(self.f, "big")
if self.dm_version == 4 and size:
# Just guessing that this is the size
size = self.read_l_or_q(self.f, "big")
n_tags = self.read_l_or_q(self.f, "big")
return bool(is_sorted), bool(is_open), n_tags
def parse_tag_group(self, size=False):
"""Parse the root TagGroup of the given DM3 file f.
Returns the tuple (is_sorted, is_open, n_tags).
endian can be either 'big' or 'little'.
"""
is_sorted = iou.read_byte(self.f, "big")
is_open = iou.read_byte(self.f, "big")
if self.dm_version == 4 and size:
# Just guessing that this is the size
size = self.read_l_or_q(self.f, "big")
n_tags = self.read_l_or_q(self.f, "big")
return bool(is_sorted), bool(is_open), n_tags
def parse_tag_header(self):
tag_id = iou.read_byte(self.f, "big")
tag_name_length = iou.read_short(self.f, "big")
tag_name = self.read_string(tag_name_length)
return {'tag_id': tag_id,
'tag_name_length': tag_name_length,
'tag_name': tag_name, }
def parse_tag_header(self):
tag_id = iou.read_byte(self.f, "big")
tag_name_length = iou.read_short(self.f, "big")
tag_name = self.read_string(tag_name_length)
return {'tag_id': tag_id,
'tag_name_length': tag_name_length,
'tag_name': tag_name, }
def find_next_data_tag(self):
while iou.read_byte(self.f, "big") != 21:
continue
position = self.f.tell() - 1
self.f.seek(position)
self.parse_tag_header()
try:
self.check_data_tag_delimiter()
self.f.seek(position)
except DM3TagTypeError:
self.f.seek(position + 1)
self.find_next_data_tag()
def find_next_data_tag(self):
while iou.read_byte(self.f, "big") != 21:
continue
position = self.f.tell() - 1
self.f.seek(position)
self.parse_tag_header()
try:
self.check_data_tag_delimiter()
self.f.seek(position)
except DM3TagTypeError:
self.f.seek(position + 1)
self.find_next_data_tag()
