Hi
I am using REXML to pull text from a NewsML document.
require 'rexml/document'
include REXML
file = File.new("Main_News.xml")
doc = Document.new(file)
root = doc.root
puts
root.elements["NewsItem/NewsComponent/NewsComponent[1]/NewsComponent/ContentItem/DataContent/nitf/body/body.head/hedline/hl1"]
Gives me...
<hl1>Blueprint to cut emissions unveiled</hl1>
Is there an easy way (ie something in REXML) to pull just the text
without the containers <hl1> and </hl1>.
Paul
···
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Paul Willis wrote:
Hi
I am using REXML to pull text from a NewsML document.
require 'rexml/document'
include REXML
file = File.new("Main_News.xml")
doc = Document.new(file)
root = doc.root
puts
root.elements["NewsItem/NewsComponent/NewsComponent[1]/NewsComponent/ContentItem/DataContent/nitf/body/body.head/hedline/hl1"]
Gives me...
<hl1>Blueprint to cut emissions unveiled</hl1>
Is there an easy way (ie something in REXML) to pull just the text
without the containers <hl1> and </hl1>.
If I understood correctly, you need the text content of the node rather than the whole node. This can be accomplished with:
some_element.text
so you could do something like
root.elements[...your stuff_here...].to_a.each {|e| puts e.text}
HTH,
Peter
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require 'rexml/document'
doc = REXML::Document.new("<root><kid>hello world</kid></root>")
p REXML::XPath.first( doc, '/root/kid/text()' )
#=> "hello world"
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On Mar 19, 5:38 am, Paul Willis <i...@paulwillis.com> wrote:
root.elements["NewsItem/NewsComponent/NewsComponent[1]/NewsComponent/Conten tItem/DataContent/nitf/body/body.head/hedline/hl1"]
Gives me...
<hl1>Blueprint to cut emissions unveiled</hl1>
Is there an easy way (ie something in REXML) to pull just the text
without the containers <hl1> and </hl1>.
Peter Szinek wrote:
If I understood correctly, you need the text content of the node rather
than the whole node. This can be accomplished with:
some_element.text
You did understand correctly, .text on the end was all I needed.
Cheers
Paul
···
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Posted via http://www.ruby-forum.com/\.
Also, depending on your needs:
include REXML
doc = Document.new("<root><kid>hello</kid><kid>world</kid></root>")
p XPath.match( doc, '/root/kid/text()' )
#=> ["hello", "world"]
···
On Mar 19, 8:04 am, "Phrogz" <g...@refinery.com> wrote:
On Mar 19, 5:38 am, Paul Willis <i...@paulwillis.com> wrote:
> root.elements["NewsItem/NewsComponent/NewsComponent[1]/NewsComponent/Conten tItem/DataContent/nitf/body/body.head/hedline/hl1"]
> Gives me...
> <hl1>Blueprint to cut emissions unveiled</hl1>
> Is there an easy way (ie something in REXML) to pull just the text
> without the containers <hl1> and </hl1>.
require 'rexml/document'
doc = REXML::Document.new("<root><kid>hello world</kid></root>")
p REXML::XPath.first( doc, '/root/kid/text()' )
#=> "hello world"
require 'rexml/document'
doc = REXML::Document.new("<root><kid>hello world</kid></root>")
p REXML::XPath.first( doc, '/root/kid/text()' )
#=> "hello world"
Thanks for that, I'm now using REXML::XPath with a combination of .first
and .match to pull the element text out.
One more thing, given an XML document...
<root><kid stuff="some-other-text">hello world</kid></root>
What would be the path to the attribute 'stuff' and return
'some-other-text'?
Paul
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Hey,
Two notes:
1. I always suggest the REXML::XPath methods over the others for
people who grok XPath.
2. A REXML::XPath.* ... text() match will return a REXML::Text node,
which may _not_ be what you want:
$ irb --simple-prompt foo.rb
require 'rexml/document'
=> true
doc = REXML::Document.new("<root><kid>hello world</kid></root>")
=> <UNDEFINED> ... </>
REXML::XPath.first( doc, '/root/kid/text()' )
=> "hello world"
REXML::XPath.first( doc, '/root/kid/text()' ).class
=> REXML::Text
Just something to be aware of (use .to_s if you want a string, as usual).
HTH,
Keith
require 'rexml/document'
include REXML
doc = Document.new( <<ENDDOC )
<root>
<kid stuff="some-other-text">hello world</kid>
<kid class="best" stuff="gibbles">hello world</kid>
</root>
ENDDOC
att = XPath.first( doc, '//kid/@stuff' )
p att, att.class, att.value
#=> stuff='some-other-text'
#=> REXML::Attribute
#=> "some-other-text"
p XPath.first( doc, '//kid[@class="best"]/@stuff' ).value
#=> "gibbles"
I don't know what the XPath syntax is to select the value of an
attribute directly. I'd be interested to know if someone else knows it.
···
On Mar 22, 10:44 am, Paul Willis <i...@paulwillis.com> wrote:
One more thing, given an XML document...
<root><kid stuff="some-other-text">hello world</kid></root>
What would be the path to the attribute 'stuff' and return
'some-other-text'?
Gavin Kistner wrote:
att = XPath.first( doc, '//kid/@stuff' )
I don't know what the XPath syntax is to select the value of an
attribute directly. I'd be interested to know if someone else knows it.
Cheers, it was the kid/@stuff I needed...
puts XPath.first( doc, '/root/kid/@stuff' )
#=> some-other-text
Paul
···
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Nice, I didn't realize that REXML::Attribute had such different output
for #inspect versus #to_s. It's nice, then, that you don't need to
call .value in this particular case. Just be aware that without
the .value call you still have an Attribute instance that can just be
treated as a string in some areas:
att = XPath.first( doc, '//kid/@stuff' )
puts att
#=> some-other-text
puts att.value + '-more'
#=> some-other-text-more
puts att + "-more"
#=> tmp.rb:17: undefined method `+' for
stuff='some-other-text':REXML::Attribute (NoMethodError)
···
On Mar 22, 11:02 am, Paul Willis <i...@paulwillis.com> wrote:
Gavin Kistner wrote:
> att = XPath.first( doc, '//kid/@stuff' )
> I don't know what the XPath syntax is to select the value of an
> attribute directly. I'd be interested to know if someone else knows it.
Cheers, it was the kid/@stuff I needed...
puts XPath.first( doc, '/root/kid/@stuff' )
#=> some-other-text