libwind from Assar. stringprep library supporting nameprep, saslprep and ldapprep

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@22551 ec53bebd-3082-4978-b11e-865c3cabbd6b

lib/wind/gen-punycode-examples.py

@@ -0,0 +1,131 @@
+#!/usr/local/bin/python
+# -*- coding: iso-8859-1 -*-
+
+# $Id$
+
+# Copyright (c) 2004 Kungliga Tekniska H<>gskolan
+# (Royal Institute of Technology, Stockholm, Sweden). 
+# All rights reserved. 
+# 
+# Redistribution and use in source and binary forms, with or without 
+# modification, are permitted provided that the following conditions 
+# are met: 
+# 
+# 1. Redistributions of source code must retain the above copyright 
+#    notice, this list of conditions and the following disclaimer. 
+# 
+# 2. Redistributions in binary form must reproduce the above copyright 
+#    notice, this list of conditions and the following disclaimer in the 
+#    documentation and/or other materials provided with the distribution. 
+# 
+# 3. Neither the name of the Institute nor the names of its contributors 
+#    may be used to endorse or promote products derived from this software 
+#    without specific prior written permission. 
+# 
+# THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
+# ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 
+# SUCH DAMAGE. 
+
+import re
+import string
+import sys
+
+import generate
+
+if len(sys.argv) != 2:
+    print "usage: %s rfc3492.txt" % sys.argv[0]
+    sys.exit(1)
+
+f = open(sys.argv[1], 'r')
+
+examples_h = generate.Header('punycode_examples.h')
+examples_c = generate.Header('punycode_examples.c')
+
+start = False
+
+while True:
+    l = f.readline()
+    if not l:
+        break
+    if l[-2:] == "\\\n":
+        l2 = f.readline()
+        if not l2:
+            raise Exception("EOF in backslash escape")
+        l2 = re.sub('^ *', '', l2)
+        l = l[:-2] + l2
+    if start:
+        if re.match('7\.2', l):
+            start = False
+        else:
+            m = re.search('^ *\([A-Z]\) *(.*)$', l);
+            if m:
+                desc = m.group(1)
+                codes = []
+            else:
+                m = re.search('^ *([uU]+.*) *$', l)
+                if m:
+                    codes.extend(string.split(m.group(1), ' '))
+                else:
+                    m = re.search('^ *Punycode: (.*) *$', l)
+                    if m:
+                        cases.append([codes, m.group(1), desc])
+    else:
+        if re.match('^7\.1', l):
+            start = True
+            cases = []
+            
+f.close()
+
+examples_h.file.write(
+'''
+#include <stddef.h>
+#include <stdint.h>
+
+#define MAX_LENGTH 40
+
+struct punycode_example {
+    size_t len;
+    uint32_t val[MAX_LENGTH];
+    const char *pc;
+    const char *description;
+};
+
+extern const struct punycode_example punycode_examples[];
+
+extern const size_t punycode_examples_size;
+''')
+
+examples_c.file.write(
+'''
+#include "punycode_examples.h"
+
+const struct punycode_example punycode_examples[] = {
+''')
+
+for x in cases:
+    [cp, pc, desc] = x
+    examples_c.file.write(
+        "  {%u, {%s}, \"%s\", \"%s\"},\n" %
+        (len(cp),
+         string.join([re.sub('[uU]\+', '0x', x) for x in cp], ', '),
+         pc,
+         desc))
+
+examples_c.file.write(
+'''};
+
+''')
+
+examples_c.file.write(
+    "const size_t punycode_examples_size = %u;\n\n" % len(cases))
+
+examples_h.close()
+examples_c.close()