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dbf900_main.py
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dbf900_main.py
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# -*- coding: utf-8 -*-
"""
Created on Tue Aug 4 15:41:40 2020
@author: MBelobraydic
"""
import codecs
from dbf900_formats import pic_yyyymmdd, pic_yyyymm, pic_latlong, pic_coord, pic_numeric, pic_any
def decode_file(file, block_size): ##Requires string for the file location and integer for blocksize
print('opening',file)
with open(file, 'rb') as ebcdicfl: #Reads the .ebc file
data = ebcdicfl.read()
print('decoding...')
ascii_txt = codecs.decode(data, 'cp1140') #decodes the entire .ebc file to ascii
##This decoding method still leaves a few uncoded "/x0" type characters
split_records = [] ##empty array for records
print('separating records...')
for index in range(0, len(ascii_txt), block_size): ##Creates an array for all records in the file
split_records.append(ascii_txt[index : index + block_size])
print('returning records...')
return split_records
def parse_record(record, layout):
values = dict()
for name, start, size, convert in layout:
if convert == 'pic_yyyymmdd':
values[name] = pic_yyyymmdd(record[start:start+size])
elif convert == 'pic_yyyymm':
values[name] = pic_yyyymm(record[start:start+size])
elif convert == 'pic_latlong':
values[name] = pic_latlong(record[start:start+size], name)
elif convert == 'pic_coord':
values[name] = pic_coord(record[start:start+size])
elif convert == 'pic_numeric':
values[name] = pic_numeric(record[start:start+size])
else:
values[name] = pic_any(record[start:start+size])
return values