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"""
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EmailDomainExtractor
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Created by
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Emanuel Borges
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11.14.2014
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This program will take a delimited file with fields containing email address data and will parse out the domains,
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outputting a list of unique values.
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"""
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import os
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class ExtractDomains():
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version = "0.1.0"
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def __init__(self):
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self.delimFile = ""
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self.outputFile = ""
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self.domainMatrix = {}
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self.domainList = []
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def TestValues(self):
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"""An internal method to first test that delimFile and outputFile have been selected and are allowed"""
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everythingOk = True
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if self.delimFile:
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if os.path.exists(self.delimFile):
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pass
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else:
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everythingOK = False
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else:
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everythingOK = False
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if self.outPutFile:
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pass
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else:
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everythingOK = False
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return everythingOk
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def ParseDomain(self, emailAddress):
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"""Interal method that will parse 1 email address, returning only the domain"""
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if "@" in emailAddress:
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domain = emailAddress.split("@")[1]
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domain = "@" + domain
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else:
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domain = None
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return domain
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def ExtractDomains(self):
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"""Main method that goes through the file and does the parsing."""
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everythingOk = self.TestValues()
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if everythingOk:
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contents = open(self.delimFile).readlines()
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for line in contents:
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line = line.replace("\n","")
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fields = line.split("|")
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for field in fields:
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if ";" in field:
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values = field.split(";")
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else:
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values = [field]
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for emailAddress in values:
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domain = self.ParseDomain(emailAddress)
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if domain:
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self.domainMatrix[domain] = 1
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self.domainList = domainMatrix.keys()
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sucessResult = True
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else:
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sucessResult = False
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return sucessResult
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def WriteValuesToFile(self):
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"""This method unpacks the domainList to the outputFile"""
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everythingOk = self.TestValues()
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if everythingOk:
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outputFile = open(self.outputFile,'w')
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if self.domainList:
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outputFile.write("List of Domains\n")
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for domain in domainList:
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outputFile.write("%s\n"%domain)
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outputFile.close()
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sucessResult = True
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else:
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sucessResult = False
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