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* ext/digest/bubblebabble, ext/digest/digest.c: Rip BubbleBabble 

support out of the base class and have a separate module named
  digest/bubblebabble.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@11152 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
knu 2006-10-13 11:46:03 +00:00
parent b9dea008c7
commit 2125aafc27
4 changed files with 145 additions and 76 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
Fri Oct 13 20:38:12 2006 Akinori MUSHA <knu@iDaemons.org>
* ext/digest/bubblebabble, ext/digest/digest.c: Rip BubbleBabble
support out of the base class and have a separate module named
digest/bubblebabble.
Fri Oct 13 19:53:59 2006 Akinori MUSHA <knu@iDaemons.org>
* ext/digest/digest.c (rb_digest_base_equal): Again, should call

136
ext/digest/bubblebabble/bubblebabble.c Normal file
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@ -0,0 +1,136 @@
/************************************************
bubblebabble.c - BubbleBabble encoding support
$Author$
created at: Fri Oct 13 18:31:42 JST 2006
Copyright (C) 2006 Akinori MUSHA
$Id$
************************************************/
#include "ruby.h"
static VALUE mDigest, cDigest_Base;
static ID id_digest;
static VALUE
bubblebabble_str_new(VALUE str_digest)
{
char *digest;
size_t digest_len;
VALUE str;
char *p;
int i, j, seed = 1;
static const char vowels[] = {
'a', 'e', 'i', 'o', 'u', 'y'
};
static const char consonants[] = {
'b', 'c', 'd', 'f', 'g', 'h', 'k', 'l', 'm', 'n',
'p', 'r', 's', 't', 'v', 'z', 'x'
};
StringValue(str_digest);
digest = RSTRING_PTR(str_digest);
digest_len = RSTRING_LEN(str_digest);
if ((LONG_MAX - 2) / 3 < (digest_len | 1)) {
rb_raise(rb_eRuntimeError, "digest string too long");
}
str = rb_str_new(0, (digest_len | 1) * 3 + 2);
p = RSTRING_PTR(str);
i = j = 0;
p[j++] = 'x';
for (;;) {
unsigned char byte1, byte2;
if (i >= digest_len) {
p[j++] = vowels[seed % 6];
p[j++] = consonants[16];
p[j++] = vowels[seed / 6];
break;
}
byte1 = digest[i++];
p[j++] = vowels[(((byte1 >> 6) & 3) + seed) % 6];
p[j++] = consonants[(byte1 >> 2) & 15];
p[j++] = vowels[((byte1 & 3) + (seed / 6)) % 6];
if (i >= digest_len) {
break;
}
byte2 = digest[i++];
p[j++] = consonants[(byte2 >> 4) & 15];
p[j++] = '-';
p[j++] = consonants[byte2 & 15];
seed = (seed * 5 + byte1 * 7 + byte2) % 36;
}
p[j] = 'x';
return str;
}
/*
* call-seq:
* Digest.bubblebabble(string) -> bubblebabble_string
*
* Returns a BubbleBabble encoded version of a given _string_. */
static VALUE
rb_digest_s_bubblebabble(VALUE klass, VALUE str)
{
return bubblebabble_str_new(str);
}
/*
* call-seq:
* Digest::ALGORITHM.bubblebabble(string) -> hash_string
*
* Returns the BubbleBabble encoded hash value of a given _string_.
*/
static VALUE
rb_digest_base_s_bubblebabble(VALUE klass, VALUE str)
{
return bubblebabble_str_new(rb_funcall(klass, id_digest, 1, str));
}
/*
* call-seq:
* digest_obj.bubblebabble -> hash_string
*
* Returns the resulting hash value in a Bubblebabble encoded form.
*/
static VALUE
rb_digest_base_bubblebabble(VALUE self)
{
return bubblebabble_str_new(rb_funcall(self, id_digest, 0));
}
/*
* This module adds some methods to Digest classes to perform
* BubbleBabble encoding.
*/
void
Init_bubblebabble(void)
{
mDigest = rb_define_module("Digest");
cDigest_Base = rb_define_class_under(mDigest, "Base", rb_cObject);
/* Digest::bubblebabble() */
rb_define_module_function(mDigest, "bubblebabble", rb_digest_s_bubblebabble, 1);
/* Digest::Base::bubblebabble() */
rb_define_singleton_method(cDigest_Base, "bubblebabble", rb_digest_base_s_bubblebabble, 1);
/* Digest::Base#bubblebabble() */
rb_define_method(cDigest_Base, "bubblebabble", rb_digest_base_bubblebabble, 0);
id_digest = rb_intern("digest");
}

3
ext/digest/bubblebabble/extconf.rb Normal file
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@ -0,0 +1,3 @@
require 'mkmf'
create_makefile('digest/bubblebabble')

76
ext/digest/digest.c
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@ -72,68 +72,6 @@ hexdigest_str_new(VALUE str_digest)
return str;
}
static VALUE
bubblebabble_str_new(VALUE str_digest)
{
char *digest;
size_t digest_len;
VALUE str;
char *p;
int i, j, seed = 1;
static const char vowels[] = {
'a', 'e', 'i', 'o', 'u', 'y'
};
static const char consonants[] = {
'b', 'c', 'd', 'f', 'g', 'h', 'k', 'l', 'm', 'n',
'p', 'r', 's', 't', 'v', 'z', 'x'
};
StringValue(str_digest);
digest = RSTRING_PTR(str_digest);
digest_len = RSTRING_LEN(str_digest);
if ((LONG_MAX - 2) / 3 < (digest_len | 1)) {
rb_raise(rb_eRuntimeError, "digest string too long");
}
str = rb_str_new(0, (digest_len | 1) * 3 + 2);
p = RSTRING_PTR(str);
i = j = 0;
p[j++] = 'x';
for (;;) {
unsigned char byte1, byte2;
if (i >= digest_len) {
p[j++] = vowels[seed % 6];
p[j++] = consonants[16];
p[j++] = vowels[seed / 6];
break;
}
byte1 = digest[i++];
p[j++] = vowels[(((byte1 >> 6) & 3) + seed) % 6];
p[j++] = consonants[(byte1 >> 2) & 15];
p[j++] = vowels[((byte1 & 3) + (seed / 6)) % 6];
if (i >= digest_len) {
break;
}
byte2 = digest[i++];
p[j++] = consonants[(byte2 >> 4) & 15];
p[j++] = '-';
p[j++] = consonants[byte2 & 15];
seed = (seed * 5 + byte1 * 7 + byte2) % 36;
}
p[j] = 'x';
return str;
}
static VALUE
rb_digest_base_alloc(VALUE klass)
{
@ -190,12 +128,6 @@ rb_digest_base_s_hexdigest(VALUE klass, VALUE str)
return hexdigest_str_new(rb_funcall(klass, id_digest, 1, str));
}
static VALUE
rb_digest_base_s_bubblebabble(VALUE klass, VALUE str)
{
return bubblebabble_str_new(rb_funcall(klass, id_digest, 1, str));
}
static VALUE
rb_digest_base_copy(VALUE copy, VALUE obj)
{
@ -334,12 +266,6 @@ rb_digest_base_hexdigest(VALUE self)
return hexdigest_str_new(rb_funcall(self, id_digest, 0));
}
static VALUE
rb_digest_base_bubblebabble(VALUE self)
{
return bubblebabble_str_new(rb_funcall(self, id_digest, 0));
}
static VALUE
rb_digest_base_inspect(VALUE self)
{
@ -425,7 +351,6 @@ Init_digest(void)
rb_define_alloc_func(cDigest_Base, rb_digest_base_alloc);
rb_define_singleton_method(cDigest_Base, "digest", rb_digest_base_s_digest, 1);
rb_define_singleton_method(cDigest_Base, "hexdigest", rb_digest_base_s_hexdigest, 1);
rb_define_singleton_method(cDigest_Base, "bubblebabble", rb_digest_base_s_bubblebabble, 1);
rb_define_method(cDigest_Base, "initialize", rb_digest_base_init, -1);
rb_define_method(cDigest_Base, "initialize_copy", rb_digest_base_copy, 1);
@ -434,7 +359,6 @@ Init_digest(void)
rb_define_method(cDigest_Base, "<<", rb_digest_base_lshift, 1);
rb_define_method(cDigest_Base, "digest", rb_digest_base_digest, 0);
rb_define_method(cDigest_Base, "hexdigest", rb_digest_base_hexdigest, 0);
rb_define_method(cDigest_Base, "bubblebabble", rb_digest_base_bubblebabble, 0);
rb_define_method(cDigest_Base, "to_s", rb_digest_base_hexdigest, 0);
rb_define_method(cDigest_Base, "inspect", rb_digest_base_inspect, 0);
rb_define_method(cDigest_Base, "==", rb_digest_base_equal, 1);