From: Robert Klemme <shortcutter@...>
Date: 2012-04-26T20:33:22+09:00
Subject: Re: if if if statment

On Thu, Apr 26, 2012 at 12:49 PM, Lars Haugseth
<ruby-talk@larshaugseth.com> wrote:
> On 04/26/2012 11:23 AM, fox foxmaster wrote:
>>
>> Lars I thought I check out nokogiri ^^ and humm I feel completely lost,
>> I am trying to find examples on how to use it in the way that I want, I
>> really don't get the examples on the nokogiri web page,
>>
>> So Lars or anyone else, would you like to show me howto use it in the
>> code I have?

Just two nitpicks with regard to file handling:

> First, you need to parse the source XML into a DOM object:
>
>  require 'nokogiri'
>
>  dom = Nokogiri::XML(File.read source_file)

# make Nokogiri read from the file to avoid to copy the whole file into memory
# and read binary!
dom = File.open(source_file, 'rb') {|io| Nokogiri.XML(io)}

> Then you iterate over all InterfaceGroup nodes and modify attributes:
>
>  dom.xpath("//InterfaceGroup").each do |node|
>    node['Members'] = "some value"
>  end
>
> Finally, write the modified DOM to the target XML file:
>
>  File.open(target_file, "w") { |f| f.write dom.to_xml }

# again avoid the copy and write binary
File.open(target_file, 'wb') { |io| dom.write_to io }

Kind regards

robert

-- 
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/