mdw@git.distorted.org.uk Git - mLib-python/blob - codec.pyx.in

   1 # -*-pyrex-*-
   2 #
   3 # $Id$
   4 #
   5 # Generic encoder/decoder
   6 #
   7 # (c) 2005 Straylight/Edgeware
   8 #
   9
  10 #----- Licensing notice -----------------------------------------------------
  11 #
  12 # This file is part of the Python interface to mLib.
  13 #
  14 # mLib/Python is free software; you can redistribute it and/or modify
  15 # it under the terms of the GNU General Public License as published by
  16 # the Free Software Foundation; either version 2 of the License, or
  17 # (at your option) any later version.
  18 #
  19 # mLib/Python is distributed in the hope that it will be useful,
  20 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  21 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22 # GNU General Public License for more details.
  23 #
  24 # You should have received a copy of the GNU General Public License
  25 # along with mLib/Python; if not, write to the Free Software Foundation,
  26 # Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  27
  28 #----- External dependencies ------------------------------------------------
  29
  30 cdef extern from 'mLib/%PREFIX%.h':
  31   ctypedef struct %PREFIX%_ctx:
  32     char *indent
  33     int maxline
  34   void _%PREFIX%_init "%PREFIX%_init"(%PREFIX%_ctx *b)
  35   void _%PREFIX%_encode "%PREFIX%_encode"(%PREFIX%_ctx *b,
  36                                           void *p, size_t sz, dstr *d)
  37   void _%PREFIX%_decode"%PREFIX%_decode"(%PREFIX%_ctx *b,
  38                                          void *p, size_t sz, dstr *d)
  39
  40 cdef class %CLASS%Encode:
  41   cdef %PREFIX%_ctx ctx
  42   def __new__(me, *hunoz, **hukairz):
  43     _%PREFIX%_init(&me.ctx)
  44     me.ctx.indent = NULL
  45   def __init__(me, indent = '\n', maxline = 72):
  46     if me.ctx.indent:
  47       xfree(me.ctx.indent)
  48     me.ctx.indent = xstrdup(indent)
  49     me.ctx.maxline = maxline
  50   def __dealloc__(me):
  51     if me.ctx.indent:
  52       xfree(me.ctx.indent)
  53   property indent:
  54     def __get__(me):
  55       return me.ctx.indent
  56     def __set__(me, indent):
  57       if me.ctx.indent:
  58         xfree(me.ctx.indent)
  59       me.ctx.indent = xstrdup(indent)
  60   property maxline:
  61     def __get__(me):
  62       return me.ctx.maxline
  63     def __set__(me, maxline):
  64       me.ctx.maxline = maxline
  65   def encode(me, text):
  66     cdef void *p
  67     cdef int len
  68     cdef dstr d
  69     DCREATE(&d)
  70     try:
  71       PyObject_AsReadBuffer(text, &p, &len)
  72       _%PREFIX%_encode(&me.ctx, p, len, &d)
  73       rc = PyString_FromStringAndSize(d.buf, d.len)
  74     finally:
  75       dstr_destroy(&d)
  76     return rc
  77   def done(me):
  78     cdef dstr d
  79     DCREATE(&d)
  80     try:
  81       _%PREFIX%_encode(&me.ctx, NULL, 0, &d)
  82       rc = PyString_FromStringAndSize(d.buf, d.len)
  83     finally:
  84       dstr_destroy(&d)
  85     return rc
  86
  87 def %PREFIX%_encode(text, *arg, **kw):
  88   e = %CLASS%Encode(*arg, **kw)
  89   return e.encode(text) + e.done()
  90
  91 cdef class %CLASS%Decode:
  92   cdef %PREFIX%_ctx ctx
  93   def __new__(me, *hunoz, **hukairz):
  94     _%PREFIX%_init(&me.ctx)
  95     me.ctx.indent = NULL
  96   def decode(me, text):
  97     cdef void *p
  98     cdef int len
  99     cdef dstr d
 100     DCREATE(&d)
 101     try:
 102       PyObject_AsReadBuffer(text, &p, &len)
 103       _%PREFIX%_decode(&me.ctx, p, len, &d)
 104       rc = PyString_FromStringAndSize(d.buf, d.len)
 105     finally:
 106       dstr_destroy(&d)
 107     return rc
 108   def done(me):
 109     cdef dstr d
 110     DCREATE(&d)
 111     try:
 112       _%PREFIX%_decode(&me.ctx, NULL, 0, &d)
 113       rc = PyString_FromStringAndSize(d.buf, d.len)
 114     finally:
 115       dstr_destroy(&d)
 116     return rc
 117
 118 def %PREFIX%_decode(text, *arg, **kw):
 119   d = %CLASS%Decode(*arg, **kw)
 120   return d.decode(text) + d.done()
 121
 122 #----- That's all, folks ----------------------------------------------------
 123