rklemme/name-value-validate.rb

## name-value-validate.rb
#!/bin/env ruby19

require 'pp'
require 'nokogiri'

doc = Nokogiri::XML(DATA)

doc.xpath('//name[following-sibling::value]').each do |name|
  value = name.xpath('following-sibling::value[1]').first
  # pp  value, value.size
  p [name.text, value.text]
end

puts '--------------'

# all "name" tags which do not have a following sibling "value" tag
doc.xpath('//name[not(following-sibling::value)]').each do |name|
  p name.text
end

puts '--------------'

# all "name" tags whose next following sibling is not a "value" tag
doc.xpath('//name[following-sibling::*[1][name()!="value"]]').each do |name|
  p name.text
end

puts '--------------'

# all "name" tags which do not have exactly one following sibling "value" tag
doc.xpath('//name[count(following-sibling::value)!=1]').each do |name|
  p name.text
end

puts '--------------'

# all "name" tags whose next following sibling is not a "value" tag OR
# which do not have exactly one following sibling "value" tag
doc.xpath('//name[following-sibling::*[1][name()!="value"]]|//name[count(following-sibling::value)!=1]').each do |name|
  p name.text
end

__END__
<?xml version="1.0"?>
<note>

 <name>Tove</name>
 <value>Tove's value is: 10</value>
 <garbage>xxxx</garbage>

 <to>Tove</to>
 <from>Jani</from>
 <heading>Reminder</heading>
 <body>Don't forget me this weekend!</body>

 <parent>
   <name>Jani</name>
   <value>Jani's value is: 20</value>
   <garbage>xxxx</garbage>
 </parent>

 <parent>
   <name>Too many</name>
   <value>Wrong's value is: 30</value>
   <value>Mr. Wrong</value>
   <garbage>xxxx</garbage>
 </parent>

 <parent>
   <name>Missing</name>
   <garbage>xxxx</garbage>
 </parent>

 <parent>
   <name>No sibling</name>
 </parent>
 <value>No sibling's value is: 30</value>


</note>
	#!/bin/env ruby19

	require 'pp'
	require 'nokogiri'

	doc = Nokogiri::XML(DATA)

	doc.xpath('//name[following-sibling::value]').each do \|name\|
	value = name.xpath('following-sibling::value[1]').first
	# pp value, value.size
	p [name.text, value.text]
	end

	puts '--------------'

	# all "name" tags which do not have a following sibling "value" tag
	doc.xpath('//name[not(following-sibling::value)]').each do \|name\|
	p name.text
	end

	puts '--------------'

	# all "name" tags whose next following sibling is not a "value" tag
	doc.xpath('//name[following-sibling::*[1][name()!="value"]]').each do \|name\|
	p name.text
	end

	puts '--------------'

	# all "name" tags which do not have exactly one following sibling "value" tag
	doc.xpath('//name[count(following-sibling::value)!=1]').each do \|name\|
	p name.text
	end

	puts '--------------'

	# all "name" tags whose next following sibling is not a "value" tag OR
	# which do not have exactly one following sibling "value" tag
	doc.xpath('//name[following-sibling::*[1][name()!="value"]]\|//name[count(following-sibling::value)!=1]').each do \|name\|
	p name.text
	end

	__END__
	<?xml version="1.0"?>
	<note>

	<name>Tove</name>
	<value>Tove's value is: 10</value>
	<garbage>xxxx</garbage>

	<to>Tove</to>
	<from>Jani</from>
	<heading>Reminder</heading>
	<body>Don't forget me this weekend!</body>

	<parent>
	<name>Jani</name>
	<value>Jani's value is: 20</value>
	<garbage>xxxx</garbage>
	</parent>

	<parent>
	<name>Too many</name>
	<value>Wrong's value is: 30</value>
	<value>Mr. Wrong</value>
	<garbage>xxxx</garbage>
	</parent>

	<parent>
	<name>Missing</name>
	<garbage>xxxx</garbage>
	</parent>

	<parent>
	<name>No sibling</name>
	</parent>
	<value>No sibling's value is: 30</value>


	</note>