sm_attach_total

#! /usr/bin/python 
# sm_attach_total (Python script) -- print out the total size of attachments in a SquirrelMail message
# The message text (containing zero or more attachment descriptions) is expected on stdin or
# in a file named on the command line.
# Each attachment description contains a size (of the file as encoded with BASE-64) consisting
# of a number followed by either "k" or "M" (within this script, this is called a size specifier).
# The script repeatedly scans the input, one word at a time, until a size specifier is found.  The
# integer value of the previous word (times 1024 in the case of "M") is then added to the total.
# At the end of the script, this total is printed to stdout.

import sys

if len( sys.argv ) == 1:
	input_stream = sys.stdin
else:
	input_stream = file( sys.argv[1] )

total = 0
prev = 0

# read and process all lines in the file
for line in input_stream.readlines():
  # (...one word at a time)
	for word in line.split():
		value = 0
		if word == "k":
		  value = int(prev)
		elif word == "M":
			value = int(prev)	 * 1024
		
		if value != 0:
			total += value
		
		prev = word

print total