1#!/usr/local/bin/python 2# -*- coding: iso-8859-1 -*- 3 4# $Id$ 5 6# Copyright (c) 2004 Kungliga Tekniska Högskolan 7# (Royal Institute of Technology, Stockholm, Sweden). 8# All rights reserved. 9# 10# Redistribution and use in source and binary forms, with or without 11# modification, are permitted provided that the following conditions 12# are met: 13# 14# 1. Redistributions of source code must retain the above copyright 15# notice, this list of conditions and the following disclaimer. 16# 17# 2. Redistributions in binary form must reproduce the above copyright 18# notice, this list of conditions and the following disclaimer in the 19# documentation and/or other materials provided with the distribution. 20# 21# 3. Neither the name of the Institute nor the names of its contributors 22# may be used to endorse or promote products derived from this software 23# without specific prior written permission. 24# 25# THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 26# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28# ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 29# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35# SUCH DAMAGE. 36 37import re 38import string 39import sys 40 41import generate 42 43if len(sys.argv) != 3: 44 print "usage: %s rfc3492.txt" % sys.argv[0] 45 sys.exit(1) 46 47f = open(sys.argv[1], 'r') 48 49examples_h = generate.Header('%s/punycode_examples.h' % sys.argv[2]) 50examples_c = generate.Header('%s/punycode_examples.c' % sys.argv[2]) 51 52start = False 53 54while True: 55 l = f.readline() 56 if not l: 57 break 58 if l[-2:] == "\\\n": 59 l2 = f.readline() 60 if not l2: 61 raise Exception("EOF in backslash escape") 62 l2 = re.sub('^ *', '', l2) 63 l = l[:-2] + l2 64 if start: 65 if re.match('7\.2', l): 66 start = False 67 else: 68 m = re.search('^ *\([A-Z]\) *(.*)$', l); 69 if m: 70 desc = m.group(1) 71 codes = [] 72 else: 73 m = re.search('^ *([uU]+.*) *$', l) 74 if m: 75 codes.extend(string.split(m.group(1), ' ')) 76 else: 77 m = re.search('^ *Punycode: (.*) *$', l) 78 if m: 79 cases.append([codes, m.group(1), desc]) 80 else: 81 if re.match('^7\.1', l): 82 start = True 83 cases = [] 84 85f.close() 86 87examples_h.file.write( 88''' 89#include <krb5-types.h> 90 91#define MAX_LENGTH 40 92 93struct punycode_example { 94 size_t len; 95 uint32_t val[MAX_LENGTH]; 96 const char *pc; 97 const char *description; 98}; 99 100extern const struct punycode_example punycode_examples[]; 101 102extern const size_t punycode_examples_size; 103''') 104 105examples_c.file.write( 106''' 107#include <stdlib.h> 108#include "punycode_examples.h" 109 110const struct punycode_example punycode_examples[] = { 111''') 112 113for x in cases: 114 [cp, pc, desc] = x 115 examples_c.file.write( 116 " {%u, {%s}, \"%s\", \"%s\"},\n" % 117 (len(cp), 118 string.join([re.sub('[uU]\+', '0x', x) for x in cp], ', '), 119 pc, 120 desc)) 121 122examples_c.file.write( 123'''}; 124 125''') 126 127examples_c.file.write( 128 "const size_t punycode_examples_size = %u;\n\n" % len(cases)) 129 130examples_h.close() 131examples_c.close() 132