require '
uri
'
require '
open-uri
'
module
SEO
class
GooglePR
def
initialize
(
uri
)
@uri = uri
end
M
=
0x100000000
def
m1
(
a
,
b
,
c
,
d
)
(((
a
+(
M
-
b
)+(
M
-
c
))%
M
)^(
d
%
M
))%
M
end
def
i2c
(
i
)
[
i
&
0xff
, i
>>
8
&
0xff
, i
>>
16
&
0xff
, i
>>
24
&
0xff
]
end
def
c2i
(
s
,
k
=
0
)
((
s
[
k
+
3
].
to_i
*
0x100
+
s
[
k
+
2
].
to_i
)*
0x100
+
s
[
k
+
1
].
to_i
)*
0x100
+
s
[
k
].
to_i
end
def
mix
(
a
,
b
,
c
)
a = a
%
M
; b = b
%
M
; c = c
%
M
a = m1
(
a
,
b
,
c
, c >> 13
); b = m1
(
b
,
c
,
a
, a << 8
); c = m1
(
c
,
a
,
b
, b >> 13
)
a = m1
(
a
,
b
,
c
, c >> 12
); b = m1
(
b
,
c
,
a
, a << 16
); c = m1
(
c
,
a
,
b
, b >> 5
)
a = m1
(
a
,
b
,
c
, c >> 3
); b = m1
(
b
,
c
,
a
, a << 10
); c = m1
(
c
,
a
,
b
, b >> 15
)
[
a
, b
, c
]
end
def
old_cn
(
iurl = '
info:
' + @uri
)
a = 0x9E3779B9
; b = 0x9E3779B9
; c = 0xE6359A60
len = iurl
.
size
k = 0
while (
len >= k + 12
) do
a += c2i
(
iurl
,
k
); b += c2i
(
iurl
,
k
+
4
); c += c2i
(
iurl
,
k
+
8
)
a
, b
, c = mix
(
a
, b
, c
)
k = k + 12
end
a += c2i
(
iurl
,
k
); b += c2i
(
iurl
,
k
+
4
); c += (
c2i
(
iurl
,
k
+
8
) << 8
) + len
a
,
b
,
c = mix
(
a
,
b
,
c
)
return c
end
def
cn
ch = old_cn
ch = ((
ch
/
7
) << 2
) | ((
ch
-(
ch
/
13
).
floor
*
13
)&
7
)
new_url = []
20
.
times { i2c
(
ch
).
each { |
i
| new_url << i }; ch -= 9 }
('
6
' + old_cn
(
new_url
).
to_s
).
to_i
end
def
request_uri
"
http://toolbarqueries.google.com/search?client=navclient-auto&hl=en&ch=#{cn}&ie=UTF-8&oe=UTF-8&features=Rank&q=info:#{URI.escape(@uri, /[^-.!~*'()a-zA-Z\d]/)}
"
end
def
page_rank
(
uri = @uri
)
@uri = uri if uri != @uri
open
(
request_uri
) { |
f
| return $1
.
to_i if f
.
string =~ /
Rank_1:\d:(\d+)
/ }
nil
end
private :m1
, :i2c
, :c2i
, :mix
, :old_cn
attr_accessor :uri
end
end
if __FILE__ == $0 and 1 == ARGV
.
size
puts SEO
::
GooglePR
.
new
(
ARGV
[
0
]).
page_rank
end
Loading...
