Parsing MIME Files from TXT file using Python-CodePudding

I'm trying to parse the Mimefile in a TXT file the format is like this

Content-Type: multipart/related; boundary="MIMEBoundary"
MIME-Version: 1.0
Content-Description: This Transmission File is created with Pegasus Test Suite
X-eFileRoutingCode: MEF
Content-Transfer-Encoding: Binary
Content-Location: manifest_xml

--MIMEBoundary
Content-Type: text/xml; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit

<?xml version='1.0' encoding='UTF-8'?>
<SOAP:Envelope xmlns="http://www.efiles.id/efile" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:SOAP="http://schemas.xmlsoap.org/soap/envelope/" xmlns:efile="http://www.efiles.id/efile" xsi:schemaLocation="http://schemas.xmlsoap.org/soap/envelope/ ../message/SOAP.xsd http://www.files./efile ../message/efileMessage.xsd"><SOAP:Header><IFATransmissionHeader><MessageId>012342018ABCDEFGHIJK</MessageId><TransmissionTs>2018-07-01T09:51:56-05:00</TransmissionTs><TransmitterDetail><ETIN>XXXXX</ETIN></TransmitterDetail></IFATransmissionHeader></SOAP:Header><SOAP:Body><TransmissionManifest><SubmissionDataList><Cnt>1</Cnt><SubmissionData><SubmissionId>0123452018OPQRSTUVWX</SubmissionId><ElectronicPostmarkTs>2018-07-01T09:51:56-05:00</ElectronicPostmarkTs></SubmissionData></SubmissionDataList></TransmissionManifest></SOAP:Body></SOAP:Envelope>
--MIMEBoundary
Content-Type: application/octet-stream
MIME-Version: 1.0
Content-Transfer-Encoding: base64

UEsDBBQAAAAAAOh2lFQAAAAAAAAAAAAAAAALAAAAYXR0YWNobWVudC9QSwMEFAAAAAAA6HaUVAAA
AAAAAAAAAAAAAAQAAAB4bWwvUEsDBBQAAAAAAOh2lFT0i/87pT0AAKU9AAAVAAAAYXR0YWNobWVu
dC9zYW1wbGUucGRmJVBERi0yLjAKJbq63toKMSAwIG9iajw8L1R5cGUvQ2F0YWxvZy9QYWdlcyAy
IDAgUi9NZXRhZGF0YSAxMiAwIFI PgplbmRvYmoKMiAwIG9iajw8L1R5cGUvUGFnZXMvS2lkc1sz
IDAgUl0vQ291bnQgMT4 CmVuZG9iagoxMiAwIG9iajw8L1R5cGUvTWV0YWRhdGEvU3VidHlwZS9Y

--MIMEBoundary--

i want to separate XML and encode it into separate string, how i have made a decoder like this

class NewlineSafeBytesParser(email.parser.BytesParser):
    def parse(self, fp, headersonly=False):
        from io import TextIOWrapper
        fp = TextIOWrapper(fp, encoding='ascii', errors='surrogateescape', newline='')
        try:
            return self.parser.parse(fp, headersonly)
        finally:
            fp.detach()

# Subclassing:
parser = NewlineSafeBytesParser()

but I get a corrupt decoded result, how do separate the encoded zip file (Base64) encode from the txt file so that it can be decoded separately?

CodePudding user response：

Parsing on python3 and showing only Content-Type: text/xml

mailFile = open("list1.txt", "rb").read()
msg = email.message_from_file(mailFile)
for part in msg.walk():
    print(part.get_content_type())
    if part.get_content_type() == 'text/xml':
        print(part.get_payload())

<?xml version='1.0' encoding='UTF-8'?>
<SOAP:Envelope xmlns="http://www.efiles.id/efile" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:SOAP="http://schemas.xmlsoap.org/soap/envelope/" xmlns:efile="http://www.efiles.id/efile" xsi:schemaLocation="http://schemas.xmlsoap.org/soap/envelope/ ../message/SOAP.xsd http://www.files./efile ../message/efileMessage.xsd"><SOAP:Header><IFATransmissionHeader><MessageId>012342018ABCDEFGHIJK</MessageId><TransmissionTs>2018-07-01T09:51:56-05:00</TransmissionTs><TransmitterDetail><ETIN>XXXXX</ETIN></TransmitterDetail></IFATransmissionHeader></SOAP:Header><SOAP:Body><TransmissionManifest><SubmissionDataList><Cnt>1</Cnt><SubmissionData><SubmissionId>0123452018OPQRSTUVWX</SubmissionId><ElectronicPostmarkTs>2018-07-01T09:51:56-05:00</ElectronicPostmarkTs></SubmissionData></SubmissionDataList></TransmissionManifest></SOAP:Body></SOAP:Envelope>