def accept(self, buf, visitor):
"""
[0x0B 0x09 0x00] ... 2 bytes ...
[main id: 11 byte] ... 3 bytes ...
[sub id: 3byte] ... ? ...
[0x00 0x00 0x02 0x01]
[VInt A] [VStr(heading): A.length] ... ? ...
[0x0B 0x00]
[VInt B] [VSTr(body): B.length]
...
OR
[0x00 0x00 0x03 0x01]
[Vint C] [VStr(heading): A.length]
...
"""
logging.debug("parsing FDT of %s(%s) bytes", len(buf), hex(len(buf)))
self._set_pos(0)
try:
while True:
i = find(buf, self._pos, 0x0B, 0x09, 0x00)
logging.debug("[0x0B 0x09 0x00] found at %s", hex(i))
self._set_pos(i)
main_id = read_str(buf, self._pos+4, 11)
sub_id = read_str(buf, self._pos+18, 3)
logging.debug("main id: %s", main_id)
logging.debug("sub id: %s", sub_id)
if int(sub_id) == 0:
i = find(buf, self._pos, 0x00, 0x00, 0x02, 0x01)
logging.debug("[0x00 0x00 0x02 0x01] found at %s", hex(i))
else:
i = find(buf, self._pos, 0x00, 0x00, 0x03, 0x01)
logging.debug("[0x00 0x00 0x03 0x01] found at %s", hex(i))
self._set_pos(i+4)
heading = self._read_vstr(buf)
if int(sub_id) > 0:
visitor.example(FDTParserExample(main_id, sub_id, heading.value))
continue
i = find(buf, self._pos, 0x0B, 0x00)
logging.debug("[0x0B 0x00 found] at %s", hex(i))
if i - self._pos > 5:
logging.warn("[0x0B 0x00](%s) found long after [0x00 0x00 0x02 0x01](%s)",
hex(i), hex(self._pos))
self._set_pos(i+2)
body = self._read_vstr(buf)
visitor.document(FDTParserDocument(main_id, sub_id, heading.value, body.value))
except EOFError:
logging.debug("rearch EOF")
logging.debug("parse finishied")
def parse(self, path):
buf = open(path, "rb").read()
eof = len(buf)
logging.debug("path: %s", path)
logging.debug("parsing INX of %s(%s) bytes", eof, hex(eof))
self._set_pos(0)
num_entries = read_int(buf, self._pos, 1)
logging.debug("number of entries: %s", num_entries)
self._add_pos(1)
result = INXParseResult(buf)
for i in xrange(num_entries):
logging.debug("entry %s of %s", i+1, num_entries)
content_start = read_int(buf, self._pos, 8)
logging.debug("content_start: %s (%s)", content_start, hex(content_start))
self._add_pos(8)
name_length = read_int(buf, self._pos, 1)
logging.debug("name_length: %s", name_length)
self._add_pos(1)
name = read_str(buf, self._pos, name_length)
logging.debug("name: %s", name)
self._add_pos(name_length)
result.append(INXEntry(result, name, content_start))
return result
def read_utf8(f, p, n):
length = 0
eof = len(f)
buf = ""
while True:
if p == eof:
raise EOFError()
buf += read_str(f, p, 1)
p += 1
length += 1
if n <= length:
try:
text = unicode(buf, "utf-8")
if len(text) == n:
return UTF8String(length, text)
except UnicodeDecodeError:
pass
