| 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 | """ |
| 38 | %CLASS%([indent = '\\n'], [maxline = 72]) |
| 39 | |
| 40 | Obsolete %CLASS% encoder. |
| 41 | """ |
| 42 | cdef %PREFIX%_ctx ctx |
| 43 | def __cinit__(me, *hunoz, **hukairz): |
| 44 | _%PREFIX%_init(&me.ctx) |
| 45 | me.ctx.indent = NULL |
| 46 | def __init__(me, indent = '\n', maxline = 72): |
| 47 | if me.ctx.indent: |
| 48 | xfree(<void *>me.ctx.indent) |
| 49 | me.ctx.indent = xstrdup(indent) |
| 50 | me.ctx.maxline = maxline |
| 51 | def __dealloc__(me): |
| 52 | if me.ctx.indent: |
| 53 | xfree(<void *>me.ctx.indent) |
| 54 | property indent: |
| 55 | """E.indent -> INT: indent level for new lines""" |
| 56 | def __get__(me): |
| 57 | return me.ctx.indent |
| 58 | def __set__(me, indent): |
| 59 | if me.ctx.indent: |
| 60 | xfree(<void *>me.ctx.indent) |
| 61 | me.ctx.indent = xstrdup(indent) |
| 62 | property maxline: |
| 63 | """E.maxline -> INT: maximum length of line, or 0 to prevent splitting""" |
| 64 | def __get__(me): |
| 65 | return me.ctx.maxline |
| 66 | def __set__(me, maxline): |
| 67 | me.ctx.maxline = maxline |
| 68 | def encode(me, text): |
| 69 | """E.encode(IN) -> OUT: continue encoding""" |
| 70 | cdef void *p |
| 71 | cdef Py_ssize_t len |
| 72 | cdef dstr d |
| 73 | DCREATE(&d) |
| 74 | try: |
| 75 | PyObject_AsReadBuffer(text, <cvp *>&p, &len) |
| 76 | _%PREFIX%_encode(&me.ctx, p, len, &d) |
| 77 | rc = PyString_FromStringAndSize(d.buf, d.len) |
| 78 | finally: |
| 79 | dstr_destroy(&d) |
| 80 | return rc |
| 81 | def done(me): |
| 82 | """E.done() -> OUT: finish encoding, returning final output""" |
| 83 | cdef dstr d |
| 84 | DCREATE(&d) |
| 85 | try: |
| 86 | _%PREFIX%_encode(&me.ctx, NULL, 0, &d) |
| 87 | rc = PyString_FromStringAndSize(d.buf, d.len) |
| 88 | finally: |
| 89 | dstr_destroy(&d) |
| 90 | return rc |
| 91 | |
| 92 | def %PREFIX%_encode(text, *arg, **kw): |
| 93 | """%PREFIX%_encode(IN, [ARGS...]) -> OUT: %CLASS%-encode the string IN""" |
| 94 | e = %CLASS%Encode(*arg, **kw) |
| 95 | return e.encode(text) + e.done() |
| 96 | |
| 97 | cdef class %CLASS%Decode: |
| 98 | """ |
| 99 | %CLASS%() |
| 100 | |
| 101 | Obsolete %CLASS% decoder. |
| 102 | """ |
| 103 | cdef %PREFIX%_ctx ctx |
| 104 | def __cinit__(me, *hunoz, **hukairz): |
| 105 | _%PREFIX%_init(&me.ctx) |
| 106 | me.ctx.indent = NULL |
| 107 | def decode(me, text): |
| 108 | """D.encode(IN) -> OUT: continue decoding""" |
| 109 | cdef void *p |
| 110 | cdef Py_ssize_t len |
| 111 | cdef dstr d |
| 112 | DCREATE(&d) |
| 113 | try: |
| 114 | PyObject_AsReadBuffer(text, <cvp *>&p, &len) |
| 115 | _%PREFIX%_decode(&me.ctx, p, len, &d) |
| 116 | rc = PyString_FromStringAndSize(d.buf, d.len) |
| 117 | finally: |
| 118 | dstr_destroy(&d) |
| 119 | return rc |
| 120 | def done(me): |
| 121 | """D.done() -> OUT: finish decoding, returning final output""" |
| 122 | cdef dstr d |
| 123 | DCREATE(&d) |
| 124 | try: |
| 125 | _%PREFIX%_decode(&me.ctx, NULL, 0, &d) |
| 126 | rc = PyString_FromStringAndSize(d.buf, d.len) |
| 127 | finally: |
| 128 | dstr_destroy(&d) |
| 129 | return rc |
| 130 | |
| 131 | def %PREFIX%_decode(text, *arg, **kw): |
| 132 | """%PREFIX%_decode(IN) -> OUT: %CLASS%-decode the string IN""" |
| 133 | d = %CLASS%Decode(*arg, **kw) |
| 134 | return d.decode(text) + d.done() |
| 135 | |
| 136 | ###----- That's all, folks -------------------------------------------------- |