add network receipt printer support

screenless/bureau/bureau.py

@@ -214,6 +214,9 @@ class Bureau(object):
         try:
             printcfg.read("printers.cfg")
             self.smprint = {}
+            if "ipaddr" in printcfg["smallprinter"]:
+                self.smprint["ipaddr"] = printcfg["smallprinter"]["ipaddr"]
+
             for hexkey in ["vendorid", "productid", "inep", "outep"]:
                 val = printcfg["smallprinter"][hexkey]
                 if val == "":
@@ -426,7 +429,9 @@ class Bureau(object):
         """
         self._sm_print_lockfile = open("small_printer_lock", "w")
         fcntl.lockf(self._sm_print_lockfile, fcntl.LOCK_EX)
-        if (self.smprint["inep"] is None) and (self.smprint["outep"] is None):
+        if "ipaddr" in self.smprint:
+            prn = printer.Network(self.smprint["ipaddr"])
+        elif (self.smprint["inep"] is None) and (self.smprint["outep"] is None):
             prn = printer.Usb(self.smprint["vendorid"],
                               self.smprint["productid"])
         else: