␡
- The rfc822 Module
- A Simple DTD for E-mail
- An Example of an E-mail Message in XML
- Processing a Eudora Mailbox
- Processing a Linux Mailbox
- Processing an E-mail Message by Using the rfc822 Module
- Sending E-mail by Using xMail
- Source Code for the SendxMail Application
- Source Code for the xMail Application
< Back
Page 9 of 9
This chapter is from the book
This chapter is from the book
This chapter is from the book
This chapter is from the book
14.9 | -Source Code for the xMail Application
CD-ROM reference=14018.txt
"""
xMail
Convert mailboxes to a simple XML form for
e-mail messages.
XML Processing with Python
Sean Mc Grath
The Eudora e-mail client stores e-mail messages in mailboxes.
The file format is plain text. Individual messages are separated by the string "From ???@???".
This program processes a mailbox creating an XML file
that conforms to the xmail DTD.
"""
# Import some standard modules
# rfc822 is the module for e_mail header parsing
import string,rfc822,StringIO
LINUX = 0
EUDORA = 1
def XMLEscape(s):
"""
Escape XMLs two special characters which may
occur within an e-mail message.
"""
s = string.replace(s,"&","&")
s = string.replace(s,"<","<")
return s
def ProcessMessage(lines,out):
"""
Given the lines that make up an e-mail message,
create an XML message element. Uses the rfc822
module to parse the e_mail headers.
"""
out.write("<message>\n")
# Create a single string from these lines.
MessageString = string.joinfields(lines,"")
# Create a file object from the string for use
# by the rfc822 module.
fo = StringIO.StringIO(MessageString)
m = rfc822.Message (fo)
# The m object now contains all the headers.
# The headers can be accessed as a Python dictionary.
out.write("<headers>\n")
for (h,v) in m.items():
out.write("<field>\n")
out.write("<name>%s</name>\n" % XMLEscape(h))
out.write("<value>%s</value>\n" % XMLEscape(v))
out.write("</field>\n")
out.write("</headers>\n")
out.write("<body>\n")
out.write(XMLEscape(fo.read()))
out.write("</body>\n")
out.write("</message>\n")
def DoEudoraMailBox(MailBox):
"""
-Given a Eudora mailbox, convert its contents to XML conforming to the xmail DTD.
"""
f = open (MailBox,"r")
l = f.readline()[:_1]
if string.find(l,"From ???@???")==_1:
-# Sentinel that separates e-mail messages in the # Eudora mbx notation.
print 'Expected mailbox "%s"' % MailBox,
Print 'to start with "From ???@???"'
return
if MailBox[-4:] != ".mbx":
-print "Expected mailbox to have .mbx file extension", MailBox
return
# Output file has same base name but .xml extension.
out = open(MailBox[:-3]+"xml","w")
out.write ('<?xml version="1.0"?>\n')
out.write ('<!DOCTYPE xmail SYSTEM "xmail.dtd">\n')
out.write ('<xmail>\n')
Message = []
l = f.readline()
while l:
if string.find(l,"From ???@???")!=-1:
# Full message accumulated in the Message list,
# so process it to XML.
ProcessMessage(Message,out)
Message = []
else:
# Accumulate e-mail contents line by line in
# Message list.
Message.append (l)
l = f.readline()
if Message:
# Last message in the mailbox
ProcessMessage(Message,out)
out.write ('</xmail>\n')
f.close()
out.close()
def DoLinuxMailBox(MailBox):
"""
-Given a Unix mbox style mailbox, convert its contents to XML conforming to the xmail DTD.
"""
f = open (MailBox,"r")
l = f.readline()[:_1]
if string.find(l,"From ")!=0:
-print 'Expected mailbox "%s" to start with "From "' % MailBox
return
# Output file has same name as mailbox but with ".xml" added.
out = open(MailBox+".xml","w")
out.write ('<?xml version="1.0"?>\n')
out.write ('<!DOCTYPE xmail SYSTEM "xmail.dtd">\n')
out.write ('<xmail>\n')
Message = []
l = f.readline()
while l:
if string.find(l,"From ")==0:
# Full message accumulated in the Message list,
# so process it to XML.
ProcessMessage(Message,out)
Message = []
else:
# Accumulate e_mail contents line by line in
# Message list.
Message.append (l)
l = f.readline()
if Message:
# Last message in the mailbox
ProcessMessage(Message,out)
out.write ('</xmail>\n')
f.close()
out.close()
if __name__=="__main__":
import sys,getopt
format = LINUX
(options,remainder) = getopt.getopt (sys.argv[1:],"le")
for (option,value) in options:
if option == "-l":
format = LINUX
elif option == "-e":
format = EUDORA
if len(remainder)!=1:
print "Usage: %s -l|-e mailbox" % sys.argv[0]
sys.exit()
if format==EUDORA:
DoEudoraMailBox(remainder[0])
elif format==LINUX:
DoLinuxMailBox(remainder[0])
< Back
Page 9 of 9