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cnab.py
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cnab.py
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import json,os
from io import StringIO
script_dir = os.path.dirname(__file__)
class cnabWriter(object):
def __init__(self,banco):
self.banco = banco
self.file = StringIO()
def parse_json(self,path,data):
with open(os.path.join(script_dir, path)) as data_file:
json_model = json.load(data_file)
tmp_line = [' '] * 241
for item in json_model['campos']:
length_field = int(item['posicao_fim']) - int(item['posicao_inicio']) + 1
if item['nome'] in data:
value = str(data[item['nome']])
elif 'default' in item:
value = str(item['default'])
else:
value = ''
len_value = len(value)
comp = length_field - len_value
if comp > 0:
default_field = '0'*comp if item['formato'] == 'num' else ' ' * comp
else:
default_field = ''
value = value[:int(item['posicao_fim'])]
if item['formato'] == 'alfa':
value_field = value + default_field
elif item['formato'] == 'num':
value_field = default_field + value
tmp_line[item['posicao_inicio']:item['posicao_fim']] = value_field
del tmp_line[0]
return ''.join(tmp_line[:240])
def header_arquivo(self,data):
rel_path = 'bancos/'+self.banco+'/header_arquivo.json'
self.file.write(self.parse_json(rel_path,data)+'\n')
def header_lote(self,data):
rel_path = 'bancos/'+self.banco+'/header_lote.json'
self.file.write(self.parse_json(rel_path,data)+'\n')
def segmento_p(self,data):
rel_path = 'bancos/'+self.banco+'/segmento_p.json'
self.file.write(self.parse_json(rel_path,data)+'\n')
def segmento_q(self,data):
rel_path = 'bancos/'+self.banco+'/segmento_q.json'
self.file.write(self.parse_json(rel_path,data)+'\n')
def segmento_r(self,data):
rel_path = 'bancos/'+self.banco+'/segmento_r.json'
self.file.write(self.parse_json(rel_path,data)+'\n')
def trailer_lote(self,data):
rel_path = 'bancos/'+self.banco+'/trailer_lote.json'
self.file.write(self.parse_json(rel_path,data)+'\n')
def trailer_arquivo(self,data):
rel_path = 'bancos/'+self.banco+'/trailer_arquivo.json'
self.file.write(self.parse_json(rel_path,data)+'\n')
def close(self):
self.file.flush()
self.file.seek(0)
return self.file.read()
class cnabReader(object):
def __init__(self,banco):
self.banco = banco
def parse_json(self,path,data):
with open(os.path.join(script_dir, path)) as data_file:
json_model = json.load(data_file)
data_return = {}
for item in json_model['campos']:
data_return[item['nome']] = data[item['posicao_inicio']-1:item['posicao_fim']]
return data_return
def header_arquivo(self,data):
rel_path = 'bancos/'+self.banco+'/header_arquivo.json'
return self.parse_json(rel_path,data)
def header_lote(self,data):
rel_path = 'bancos/'+self.banco+'/header_lote.json'
return self.parse_json(rel_path,data)
def segmento_t(self,data):
rel_path = 'bancos/'+self.banco+'/segmento_t.json'
return self.parse_json(rel_path,data)
def segmento_u(self,data):
rel_path = 'bancos/'+self.banco+'/segmento_u.json'
return self.parse_json(rel_path,data)
def trailer_lote(self,data):
rel_path = 'bancos/'+self.banco+'/trailer_lote.json'
return self.parse_json(rel_path,data)
def trailer_arquivo(self,data):
rel_path = 'bancos/'+self.banco+'/trailer_arquivo.json'
return self.parse_json(rel_path,data)