# Name: find-email.py
# By: Jim Cameron
# Created: 2015-09-12
# Last Modified: 2015-09-12
# Version: 0.1
# URL: http://support.moonpoint.com/downloads/computer_languages/python/find-email.py
#
# Purpose: 
# Search a mailbox file in mbox format for lines that start with "From" that 
# contain the specified string, which can be a full email address, a name, a
# domain name, e.g. "hotmail.com". etc. For the messages with a matching 
# "From" address, if "brief" mode is chosen, print the sender email address 
# and after the entire file has been processed, print the total count of 
# matches. Otherwise, print the full message for each message found from
# any matching sender.

import sys

from_address = "example.com"
mbox_file = "/var/spool/mail/jdoe"

# If brief is "True", print just "from", "subject", and "date lines
# If it is "False" print the entire message to the file specified by outfile
brief = False

fh = open(mbox_file)

def brief_message():
   
   count = 0
   for line in fh:
      if line.startswith('From '):
         if from_address in line:
            count += 1
            ln = line.split()
            # Print just the email address found on the "From" line
            print "From: ", ln[1]
            for line in fh:
                if "Subject: " in line:
                   print line.rstrip('\n')
                   # Find the date the message was sent
                   for line in fh:
                       if "Date: " in line:
                          print line
                          break
                   break
   print count, "matches found"

def full_message():
   
   for line in fh:
      if line.startswith('From '):
         if from_address in line:
            sys.stdout.write(line)
            for line in fh:
                if not line.startswith('From '):
                   sys.stdout.write(line)
                else:
                   break

if brief:
   brief_message()
else:
   full_message()