def read_ILS_section_into(ils_data, entries_by_nr, dest):
buf = SeqBuffer(ils_data)
while not buf.at_eof():
nr = buf.unpackVarint()
section = entries_by_nr[nr]
data = buf.readBytes(section.size)
section.set_bytes(data)
def read_ILS_section_into(ils_data, entries_by_nr, dest):
buf = SeqBuffer(ils_data)
while not buf.at_eof():
nr = buf.unpackVarint()
section = entries_by_nr[nr]
data = buf.readBytes(section.size)
section.set_bytes(data)
def parse_abmp_section(blob, file):
buf = SeqBuffer(blob)
v1 = buf.unpackVarint()
v2 = buf.unpackVarint()
section_count = buf.unpackVarint()
print("ABMP header: %s" % [v1,v2, section_count])
#w1sum=0; w2sum=0; w3sum=0; w4sum=0
csum=0; usum=0
sections = []
for i in range(section_count):
id = buf.unpackVarint()
offset = buf.unpackVarint() # offset
comp_size = buf.unpackVarint() # size in file
decomp_size = buf.unpackVarint() # size, decompressed
repr_mode = buf.unpackVarint()
[tag] = buf.unpack('<4s')
tag = rev(tag)
print("ABMP entry: %s" % ([id, tag,
offset, comp_size, decomp_size,
repr_mode]))
sections.append(ABMPEntry(id, tag, comp_size, offset, repr_mode))
print("Bytes left in ABMP section: %d" % buf.bytes_left())
# print "Sums: %s" % [csum, usum]
return sections
def parse_abmp_section(blob, file):
buf = SeqBuffer(blob)
v1 = buf.unpackVarint()
v2 = buf.unpackVarint()
section_count = buf.unpackVarint()
print("ABMP header: %s" % [v1,v2, section_count])
#w1sum=0; w2sum=0; w3sum=0; w4sum=0
csum=0; usum=0
sections = []
for i in range(section_count):
id = buf.unpackVarint()
offset = buf.unpackVarint() # offset
comp_size = buf.unpackVarint() # size in file
decomp_size = buf.unpackVarint() # size, decompressed
repr_mode = buf.unpackVarint()
[tag] = buf.unpack('<4s')
tag = rev(tag)
print("ABMP entry: %s" % ([id, tag,
offset, comp_size, decomp_size,
repr_mode]))
sections.append(ABMPEntry(id, tag, comp_size, offset, repr_mode))
print "Bytes left in ABMP section: %d" % buf.bytes_left()
# print "Sums: %s" % [csum, usum]
return sections
def create_section_map(f, loader_context):
while True:
xsectheader = f.read(4)
if len(xsectheader) < 4: break
[stag] = struct.unpack('<4s', xsectheader)
stag = rev(stag)
ssize = read_varint(f)
print("stag=%s ssize=%d" % (stag, ssize))
if ssize==0:
break
else:
sect_data = f.read(ssize)
if stag == "Fcdr" or stag == "FGEI":
sect_data = zlib.decompress(sect_data)
print("ssize decompressed=%d" % (len(sect_data)))
elif stag == "ABMP":
buf = SeqBuffer(sect_data)
sect_data_null = buf.unpackVarint()
sect_data_size = buf.unpackVarint()
sect_data = zlib.decompress(buf.peek_bytes_left())
del buf
print("ssize decompressed=%d=%d" % (sect_data_size, len(sect_data)))
abmp = parse_abmp_section(sect_data, f)
print("DB| ABMP: %s" % abmp)
if stag != "ABMP":
print ("DB| %s -> %s" % (stag, sect_data))
section_base_pos = f.tell()
# entries_by_nr = {}
# for e in abmp:
# entries_by_nr[e.nr] = e
# Fetch the sections:
sections = []
sections_in_ils_by_nr = {}
ils_section_bytes = None
for e in abmp:
snr = e.nr
print("DB| section nr %s: %s" % (snr,e))
if e.offset == -1:
# Compressed, in ILS section.
section = LateSectionImpl(snr,e.tag,e.size)
sections_in_ils_by_nr[snr] = section
elif e.repr_mode==0:
section = ZSectionImpl(snr, e.tag, e.size,
section_base_pos + e.offset, f)
elif e.repr_mode==1:
section = UncompSectionImpl(snr, e.tag, e.size, e.offset, f)
# f.seek(section_base_pos + e.offset)
# raw_sdata = f.read(e.size)
# if e.repr_mode==0:
# sdata = zlib.decompress(raw_sdata)
# elif e.repr_mode==1:
# sdata = raw_sdata
else:
raise "unknown repr_mode: %d" % e.repr_mode
# entries_by_nr[snr] = (e.tag,sdata)
sections.append(section)
if e.tag=="ILS ":
ils_section_bytes = section.bytes()
if sections_in_ils_by_nr:
read_ILS_section_into(ils_section_bytes,
sections_in_ils_by_nr,
sections)
# print "Sections=%s" % (sections.keys())
print("Sections:")
for e in sections:
print(" %d: %s" % (e.nr, e))
# Debug:
# for snr in sections:
# (tag,data) = sections[snr]
# if tag=="Lscr" or tag=="LctX":# or tag=="Lnam":
# print "DB| %d: %s->%s" % (snr, tag, data)
# if tag=="Lnam":
# print "DB| %d: %s->%s" % (snr, tag, LnamSection.parse(data))
return SectionMapImpl(sections)
