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- # -*- coding: utf-8 -*-
- #
- # (c) Copyright 2003-2008 Hewlett-Packard Development Company, L.P.
- #
- # This program is free software; you can redistribute it and/or modify
- # it under the terms of the GNU General Public License as published by
- # the Free Software Foundation; either version 2 of the License, or
- # (at your option) any later version.
- #
- # This program is distributed in the hope that it will be useful,
- # but WITHOUT ANY WARRANTY; without even the implied warranty of
- # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- # GNU General Public License for more details.
- #
- # You should have received a copy of the GNU General Public License
- # along with this program; if not, write to the Free Software
- # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- #
- # Author: Don Welch
- #
-
- # Std Lib
- import struct
-
- # Local
- from g import *
-
- # DIME constants
- TYPE_T_MIME = 0x01
- TYPE_T_URI = 0x02
- DIME_VERSION = 1
- PAD_SIZE = 4
-
-
- class Record(object):
- def __init__(self, id, typ, typ_code, payload):
- self.id = id
- self.typ = typ
- self.typ_code = typ_code
- self.payload = payload
-
-
- class Message(object):
- def __init__(self):
- self.records = []
-
- def add_record(self, rec):
- self.records.append(rec)
-
- def generate(self, output): # output is a stream type
- for i, r in enumerate(self.records):
- log.debug("Processing record %d (%s)" % (i, r.id))
- mb = me = cf = 0
- if i == 0: mb = 1
- if i == len(self.records)-1: me = 1
-
- output.write(struct.pack("!B", ((DIME_VERSION & 0x1f) << 3 |
- (mb & 0x01) << 2 |
- (me & 0x01) << 1 |
- (cf & 0x01))))
-
- output.write(struct.pack("!B", ((r.typ_code & 0xf) << 4) & 0xf0))
-
- output.write(struct.pack("!H", 0)) # Options length
-
- id_len = self.bytes_needed(len(r.id))
- output.write(struct.pack("!H", len(r.id))) # ID length
-
- typ_len = self.bytes_needed(len(r.typ))
- output.write(struct.pack("!H", len(r.typ))) # Type length
-
- data_len = self.bytes_needed(len(r.payload))
- output.write(struct.pack("!I", len(r.payload))) # Data length
-
- if id_len:
- output.write(struct.pack("%ds" % id_len, r.id))
-
- if typ_len:
- output.write(struct.pack("%ds" % typ_len, r.typ))
-
- if data_len:
- output.write(struct.pack("%ds" % data_len, r.payload))
-
-
- def bytes_needed(self, data_len, block_size=PAD_SIZE):
- if data_len % block_size == 0:
- return data_len
- else:
- return (data_len/block_size+1)*block_size
-
-
-
-
- if __name__ == "__main__":
- log.set_level("debug")
- import cStringIO
- m = Message()
- m.add_record(Record("cid:id0", "http://schemas.xmlsoap.org/soap/envelope/",
- TYPE_T_URI, "<test>test</test>"))
-
- m.add_record(Record("test2", "text/xml", TYPE_T_MIME, "<test>test2</test>"))
-
- output = cStringIO.StringIO()
-
- m.generate(output)
-
- log.log_data(output.getvalue())
-
-
-
-