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Added ucs2 compatible parts generator #58

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Added ucs2 compatible parts generator #58

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32 changes: 32 additions & 0 deletions smpplib/gsm.py
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Original file line number Diff line number Diff line change
Expand Up @@ -77,3 +77,35 @@ def make_parts_encoded(encoded_text, part_size):
def split_sequence(sequence, part_size):
"""Splits the sequence into equal parts"""
return [sequence[i:i + part_size] for i in range(0, len(sequence), part_size)]

def make_ucs2_compatible_parts(text):
"""
This method will make correct partition for latin and cyrillic letters
:param text: Text to partition
:return: parts, encoding, esm_class
"""
text_to_encode = text
parts = []

part = b''
for letter in text_to_encode:
encoded_letter = letter.encode('utf-16-be')
if len(part) + len(encoded_letter) < consts.UCS2_MP_SIZE:
part += encoded_letter
else:
parts.append(part)
part = encoded_letter
parts.append(part)

esm_class = consts.SMPP_MSGTYPE_DEFAULT
if len(parts) > 1:
esm_class = consts.SMPP_GSMFEAT_UDHI
uid = six.int2byte(random.randint(0, 255))
parts = [b''.join((b'\x05\x00\x03',
uid,
six.int2byte(len(parts)),
six.int2byte(i + 1),
current_part))
for i, current_part in enumerate(parts)]

return parts, consts.SMPP_ENCODING_ISO10646, esm_class