162 lines
4.4 KiB
Plaintext
162 lines
4.4 KiB
Plaintext
# -*- coding: utf8 -*-
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'''
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Created on Jul 10, 2016
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@author: Dayo
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'''
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from math import ceil
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class SMSCounter():
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GSM_7BIT = 'GSM_7BIT'
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GSM_7BIT_EX = 'GSM_7BIT_EX'
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UTF16 = 'UTF16'
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GSM_7BIT_LEN = GSM_7BIT_EX_LEN = 160
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UTF16_LEN = 70
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GSM_7BIT_LEN_MULTIPART = GSM_7BIT_EX_LEN_MULTIPART = 153
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UTF16_LEN_MULTIPART = 67
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def get_gsm_7bit_map(self):
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return(
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[64, 163, 36, 165, 232, 233, 249,
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236, 242, 199, 92, 110, 216, 248,
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92, 114, 197, 229, 916, 95, 934,
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915, 923, 937, 928, 936, 931, 920,
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926, 198, 230, 223, 201, 32, 33, 92,
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34, 35, 164, 37, 38, 39, 40, 41, 42,
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43, 44, 45, 46, 47, 48, 49, 50, 51,
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52, 53, 54, 55, 56, 57, 58, 59, 60,
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61, 62, 63, 161, 65, 66, 67, 68, 69,
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70, 71, 72, 73, 74, 75, 76, 77, 78,
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79, 80, 81, 82, 83, 84, 85, 86, 87,
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88, 89, 90, 196, 214, 209, 220, 167,
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191, 97, 98, 99, 100, 101, 102, 103,
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104, 105, 106, 107, 108, 109, 110,
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111, 112, 113, 114, 115, 116, 117,
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118, 119, 120, 121, 122, 228, 246,
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241, 252, 224]
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)
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def get_added_gsm_7bit_ex_map(self):
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return [91, 93, 124, 8364, 123, 92, 125, 126, 94]
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def get_gsm_7bit_ex_map(self):
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return(self.get_added_gsm_7bit_ex_map()+self.get_gsm_7bit_map())
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def text_to_unicode_pointcode_list(self, plaintext):
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textlist = []
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for stg in plaintext:
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textlist.append(ord(stg))
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return textlist
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def unicode_pointcode_list_to_text(self, strlist):
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text = ''
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for stc in strlist:
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text.join(chr(stc))
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return text
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def detect_encoding(self, plaintext):
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rf = self.text_to_unicode_pointcode_list(plaintext)
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utf16chars = set(rf).difference(set(self.get_gsm_7bit_map()))
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if len(utf16chars):
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return self.UTF16
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exchars = set(rf).intersection(set(self.get_added_gsm_7bit_ex_map()))
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if len(exchars):
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return self.GSM_7BIT_EX
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return self.GSM_7BIT
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def count(self, plaintext):
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textlist = self.text_to_unicode_pointcode_list(plaintext)
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exchars = []
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encoding = self.detect_encoding(plaintext)
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length = len(textlist)
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if encoding == self.GSM_7BIT_EX:
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lengthexchars = len(exchars)
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length+=lengthexchars
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if encoding == self.GSM_7BIT:
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permessage = self.GSM_7BIT_LEN
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if length > self.GSM_7BIT_LEN:
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permessage = self.GSM_7BIT_LEN_MULTIPART
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elif encoding == self.GSM_7BIT_EX:
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permessage = self.GSM_7BIT_EX_LEN
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if length > self.GSM_7BIT_EX_LEN:
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permessage = self.GSM_7BIT_EX_LEN_MULTIPART
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else:
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permessage = self.UTF16_LEN
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if length > self.UTF16_LEN:
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permessage = self.UTF16_LEN_MULTIPART
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messages = ceil(length/permessage)
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remaining = (permessage * messages) - length
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returnset = {
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'encoding' : encoding,
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'length' : length,
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'per_message' : permessage,
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'remaining' : remaining,
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'messages' : messages
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}
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return returnset
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def truncate(self, plaintext, limitsms):
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count = self.count(plaintext)
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if count.mesages <= limitsms:
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return plaintext
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if count.encoding == 'UTF16':
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limit = self.UTF16_LEN
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if limitsms > 2:
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limit = self.UTF16_LEN_MULTIPART
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if count.encoding != 'UTF16':
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limit = self.GSM_7BIT_LEN
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if limitsms > 2:
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limit = self.GSM_7BIT_LEN_MULTIPART
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while True:
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text = plaintext[0:limit*limitsms]
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count = self.count(plaintext)
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limit = limit - 1
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if count.messages < limitsms:
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break
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return text
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