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

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