Help: trick to get the domain name of an URL

Rails
1

Hello,

I’ve been toying with my regex for a while and still has some problem
with this.

I would like to get the web hostname of URLs : "get_domain(url) ":

such as:

http://yahoo.com → yahoo.com
http://www.yahoo.com/ → www.yahoo.com
http://www.yahoo.com/cool/dir → www.yahoo.com
http://sub1.sub2.google.com → sub1.sub2.google.com
http://sub1.sub2.google.com/abc/def/aa?? → sub1.sub2.google.com

I would appreciate any help and pointer. Thanks in advance!!

Thanks,
-Chris

2

On Fri, 2008-07-25 at 19:17 -0700, Chris Nowlan wrote:

http://www.yahoo.com/ → www.yahoo.com
http://www.yahoo.com/cool/dir → www.yahoo.com
http://sub1.sub2.google.com → sub1.sub2.google.com
http://sub1.sub2.google.com/abc/def/aa?? → sub1.sub2.google.com

I would appreciate any help and pointer. Thanks in advance!!

split(‘/’)[2]

@a=“http://www.yahoo.com”
=> “http://www.yahoo.com”
@b=“http://www.yahoo.com/cool/dir”
=> “http://www.yahoo.com/cool/dir”
@c=“http://sub1.sub2.google.com/abc/def/aa”
=> “http://sub1.sub2.google.com/abc/def/aa”
@c=“http://sub1.sub2.google.com/abc/def/aa”^C
@a.split(‘/’)[2]
=> “www.yahoo.com”
@b.split(‘/’)[2]
=> “www.yahoo.com”
@c.split(‘/’)[2]
=> “sub1.sub2.google.com”

Craig

3

Wow, that was easy.

Thanks for sharing your ruby-fu :slight_smile:

4

On Jul 25, 2008, at 10:31 PM, Craig W. wrote:

@a=“http://www.yahoo.com”
@c.split(‘/’)[2]
=> “sub1.sub2.google.com”

Craig

Or,
require ‘uri’
url = “http://sub1.sub2.google.com/abc/def/aa?param1=foo&param2=bar”
URI.parse(url).host
=> “sub1.sub2.google.com”

-Rob

Rob B. http://agileconsultingllc.com
[email protected]

5

On Mon, Aug 25, 2008 at 1:24 AM, Chris N. [email protected]
wrote:

o I need to persist [string1,string2,string3] data, such as:
“apple”, “november”, “5”
o I do this quite often with different data sets
o Performance is not a major concern
o Simplicity is best
o I need to be able to retrieve them and update them easily

For such simple persistence Marshal may do:

data = %w(foo bar baz)

File.open(‘data.db’, ‘wb’) do |fh|
fh.write(Marshal.dump(data))
end

File.open(‘data.db’, ‘rb’) do |fh|
data = Marshal.load(fh.read)
end

6

On Aug 25, 1:25 am, “Xavier N.” [email protected] wrote:

On Mon, Aug 25, 2008 at 1:24 AM, Chris N. [email protected] wrote:

o I need to persist [string1,string2,string3] data, such as:
“apple”, “november”, “5”
o I do this quite often with different data sets
o Performance is not a major concern
o Simplicity is best
o I need to be able to retrieve them and update them easily

For such simple persistence Marshal may do:

Or yaml if human readability is important (and easier to read on other
platforms)

Fred

7

Hello,

Hope everyone’s doing great.

I have a simple problem and maybe someone could help – my
requirement is pretty simple:

o I do a lot of scripting in Ruby, for plumbing our Rails web and
Java legacy applications.
o I need to persist [string1,string2,string3] data, such as:
“apple”, “november”, “5”
o I do this quite often with different data sets
o Performance is not a major concern
o Simplicity is best
o I need to be able to retrieve them and update them easily

I have been using ActiveRecord (object.new, object.save, etc) to do this
with a table with 3 columns, however I found it a bit too heavy-duty for
this simple purpose because I have to use different databases since the
data are in different locations…

I wonder if anyone could share some Ruby-Fu or a Ruby library tips on
this.

Thanks in advance!

Chris

Buy text links SEO : http://www.ask2link.com/market_place?cnow
Sell text links : http://www.ask2link.com/refer/rails