def _data_prepare(self):
if not (self.mi is None):
raise Exception()
self.log(20, 'Preparing data to transfer and generating metainfo.')
rf = open('/dev/urandom','rb')
hb = HashBuilder(self.piece_length)
for cas in self.config_argsets:
datadir = cas[1]
if not (os.path.isdir(datadir)):
os.mkdir(datadir)
dd_intermediate = os.path.join(datadir, self.intermediate_ddname)
if not (os.path.isdir(dd_intermediate)):
os.mkdir(dd_intermediate)
src_dd = self.config_argsets[0][1]
i = 0
file_dicts = deque()
dfns = deque()
for dfl in self.dfile_lens:
dfn = str(i).encode('ascii')
pn = os.path.join(src_dd, self.intermediate_ddname, dfn)
df = open(pn, 'w+b')
_copyfile(rf, df, dfl)
hb.add_file(df)
df.close()
dfns.append(pn)
file_dicts.append({b'length':dfl, b'path':[dfn]})
i += 1
hb.finish()
rf.close()
mi = BTMetaInfo.build_from_dict({
b'announce':self._get_tracker_url(),
b'info':{
b'name':self.intermediate_ddname,
b'piece length':self.piece_length,
b'pieces':b''.join(hb.digests),
b'files':list(file_dicts)
}
})
self.mi = mi
