Multiple file buffer

multibuffer.py

import sys
from cStringIO import StringIO


class MultiBuffer():
    def __init__(self, *files):
        self.files = files
        self.i = 0

    def read(self, length):
        buf = StringIO()
        self._read(length, buf)
        return buf.getvalue()

    def _read(self, length, buf):
        data = self.files[self.i].read(length)
        n = len(data)
        buf.write(data)

        if n < length:
            self.i += 1
            if self.i < len(self.files):
                self._read(length - n, buf)


mbuf = MultiBuffer(StringIO('hihihi'), open('Rakefile'))
sys.stdout.write(mbuf.read(30))