[ANN] nokogiri 1.2.3 Released

ruby-talk
1

nokogiri version 1.2.3 has been released!

* <http://nokogiri.rubyforge.org/>
* <http://github.com/tenderlove/nokogiri/wikis>
* <http://github.com/tenderlove/nokogiri/tree/master>
* <http://rubyforge.org/mailman/listinfo/nokogiri-talk>
* <http://nokogiri.lighthouseapp.com/projects/19607-nokogiri/overview>

Nokogiri (鋸) is an HTML, XML, SAX, and Reader parser.

Changes:

### 1.2.3 / 2009-03-22

* Bugfixes

  * Fixing bug where a node is passed in to Node#new
  * Namespace should be assigned on DocumentFragment creation. LH #66
  * Nokogiri::XML::NodeSet#dup works GH #10
  * Nokogiri::HTML returns an empty Document when given a blank string GH#11
  * Adding a child will remove duplicate namespace declarations LH #67
  * Builder methods take a hash as a second argument

## FEATURES:

* XPath support for document searching
* CSS3 selector support for document searching
* XML/HTML builder
* Drop in replacement for Hpricot (though not bug for bug)

Nokogiri parses and searches XML/HTML very quickly, and also has
correctly implemented CSS3 selector support as well as XPath support.

Here is a speed test:

  * http://gist.github.com/24605

Nokogiri also features an Hpricot compatibility layer to help ease the change
to using correct CSS and XPath.

## SUPPORT:

The Nokogiri mailing list is available here:

  * http://rubyforge.org/mailman/listinfo/nokogiri-talk

The bug tracker is available here:

  * http://nokogiri.lighthouseapp.com/projects/19607-nokogiri/overview

## SYNOPSIS:

  require 'nokogiri'
  require 'open-uri'
  
  # Get a Nokogiri::HTML:Document for the page we’re interested in...

  doc = Nokogiri::HTML(open('http://www.google.com/search?q=tenderlove'))
  
  # Do funky things with it using Nokogiri::XML::Node methods...

···

####
  # Search for nodes by css
  doc.css('h3.r a.l').each do |link|
    puts link.content
  end
  
  ####
  # Search for nodes by xpath
  doc.xpath('//h3/a[@class="l"]').each do |link|
    puts link.content
  end
  
  ####
  # Or mix and match.
  doc.search('h3.r a.l', '//h3/a[@class="l"]').each do |link|
    puts link.content
  end

## REQUIREMENTS:

* ruby 1.8 or 1.9
* libxml2
* libxml2-dev
* libxslt
* libxslt-dev

## INSTALL:

* sudo gem install nokogiri

* <http://nokogiri.rubyforge.org/>
* <http://github.com/tenderlove/nokogiri/wikis>
* <http://github.com/tenderlove/nokogiri/tree/master>
* <http://rubyforge.org/mailman/listinfo/nokogiri-talk>
* <http://nokogiri.lighthouseapp.com/projects/19607-nokogiri/overview>

--
Aaron Patterson
http://tenderlovemaking.com/

2

When I do "gem install nokogiri" I get:

Building native extensions. This could take a while...
ERROR: Error installing nokogiri:
         ERROR: Failed to build gem native extension.

/usr/bin/ruby extconf.rb install nokogiri
checking for #include <iconv.h>
... yes
checking for #include <libxml/parser.h>
... no
libxml2 is missing. try 'port install libxml2' or 'yum install libxml2'

but when I try and do "yum install libxml2" I get:

Package libxml2-2.7.3-1.fc10.i386 already installed and latest version

How can I fix this?

Thanks,

Phil.

Aaron Patterson wrote:

···

nokogiri version 1.2.3 has been released!

* <http://nokogiri.rubyforge.org/&gt;
* <http://github.com/tenderlove/nokogiri/wikis&gt;
* <http://github.com/tenderlove/nokogiri/tree/master&gt;
* <http://rubyforge.org/mailman/listinfo/nokogiri-talk&gt;
* <Lighthouse - Beautifully Simple Issue Tracking;

Nokogiri (鋸) is an HTML, XML, SAX, and Reader parser.

Changes:

### 1.2.3 / 2009-03-22

* Bugfixes

  * Fixing bug where a node is passed in to Node#new
  * Namespace should be assigned on DocumentFragment creation. LH #66
  * Nokogiri::XML::NodeSet#dup works GH #10
  * Nokogiri::HTML returns an empty Document when given a blank string GH#11
  * Adding a child will remove duplicate namespace declarations LH #67
  * Builder methods take a hash as a second argument

## FEATURES:

* XPath support for document searching
* CSS3 selector support for document searching
* XML/HTML builder
* Drop in replacement for Hpricot (though not bug for bug)

Nokogiri parses and searches XML/HTML very quickly, and also has
correctly implemented CSS3 selector support as well as XPath support.

Here is a speed test:

  * Result · GitHub

Nokogiri also features an Hpricot compatibility layer to help ease the change
to using correct CSS and XPath.

## SUPPORT:

The Nokogiri mailing list is available here:

  * http://rubyforge.org/mailman/listinfo/nokogiri-talk

The bug tracker is available here:

  * Lighthouse - Beautifully Simple Issue Tracking

## SYNOPSIS:

  require 'nokogiri'
  require 'open-uri'
    # Get a Nokogiri::HTML:Document for the page we’re interested in...

  doc = Nokogiri::HTML(open('tenderlove - Google Search))
    # Do funky things with it using Nokogiri::XML::Node methods...

  ####
  # Search for nodes by css
  doc.css('h3.r a.l').each do |link|
    puts link.content
  end
    ####
  # Search for nodes by xpath
  doc.xpath('//h3/a[@class="l"]').each do |link|
    puts link.content
  end
    ####
  # Or mix and match.
  doc.search('h3.r a.l', '//h3/a[@class="l"]').each do |link|
    puts link.content
  end

## REQUIREMENTS:

* ruby 1.8 or 1.9
* libxml2
* libxml2-dev
* libxslt
* libxslt-dev

## INSTALL:

* sudo gem install nokogiri

* <http://nokogiri.rubyforge.org/&gt;
* <http://github.com/tenderlove/nokogiri/wikis&gt;
* <http://github.com/tenderlove/nokogiri/tree/master&gt;
* <http://rubyforge.org/mailman/listinfo/nokogiri-talk&gt;
* <Lighthouse - Beautifully Simple Issue Tracking;

--
Philip Rhoades

GPO Box 3411
Sydney NSW 2001
Australia
E-mail: phil@pricom.com.au

3

can builder generate nodes like <type> yet?

a @ http://codeforpeople.com/

···

On Mar 22, 2009, at 9:51 PM, Aaron Patterson wrote:

* Builder methods take a hash as a second argument

--
we can deny everything, except that we have the possibility of being better. simply reflect on that.
h.h. the 14th dalai lama

4

yum install libxml2-devel ?

(yay redhat)

···

On Mon, Mar 23, 2009 at 9:36 AM, Philip Rhoades <phil@pricom.com.au> wrote:

When I do "gem install nokogiri" I get:

Building native extensions. This could take a while...
ERROR: Error installing nokogiri:
ERROR: Failed to build gem native extension.

/usr/bin/ruby extconf.rb install nokogiri
checking for #include <iconv.h>
... yes
checking for #include <libxml/parser.h>
... no
libxml2 is missing. try 'port install libxml2' or 'yum install libxml2'

but when I try and do "yum install libxml2" I get:

5

It's possible, just not easy. :wink:

I'm working on it.

···

On Tue, Mar 24, 2009 at 04:29:47AM +0900, ara.t.howard wrote:

On Mar 22, 2009, at 9:51 PM, Aaron Patterson wrote:

* Builder methods take a hash as a second argument

can builder generate nodes like <type> yet?

--
Aaron Patterson
http://tenderlovemaking.com/

6

Dick,

Dick Davies wrote:

When I do "gem install nokogiri" I get:

Building native extensions. This could take a while...
ERROR: Error installing nokogiri:
       ERROR: Failed to build gem native extension.

/usr/bin/ruby extconf.rb install nokogiri
checking for #include <iconv.h>
... yes
checking for #include <libxml/parser.h>
... no
libxml2 is missing. try 'port install libxml2' or 'yum install libxml2'

but when I try and do "yum install libxml2" I get:

yum install libxml2-devel ?

Yep, had to do libxslt-devel as well but looks good - Thanks!

Phil.

···

On Mon, Mar 23, 2009 at 9:36 AM, Philip Rhoades <phil@pricom.com.au> wrote:

(yay redhat)

--
Philip Rhoades

GPO Box 3411
Sydney NSW 2001
Australia
E-mail: phil@pricom.com.au

7

have a look at this

   http://codeforpeople.rubyforge.org/svn/tagz/trunk/

it avoids completes the method missing issues, allows mixing in, and even supports conditional escaping for factoring out xml/html partials.

i'm using nokogiri for reading now, but tagz for writing

cheers.

a @ http://codeforpeople.com/

···

On Mar 23, 2009, at 3:42 PM, Aaron Patterson wrote:

It's possible, just not easy. :wink:

I'm working on it.

--
we can deny everything, except that we have the possibility of being better. simply reflect on that.
h.h. the 14th dalai lama