Module: TagMunging

Included in:
Html2Text
Defined in:
lib/tag_munging.rb

Overview

A utility module for recurring tag-specific tasks.

Instance Method Summary collapse

Instance Method Details

#all_body_cells(table, &b) ⇒ Object 



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# File 'lib/tag_munging.rb', line 49

def all_body_cells(table, &b)
	trs = table.xpath("./tbody/tr")
       debug('table contains ' << trs.size.to_s << ' data-rows') if self.respond_to?(:log)
	trs.each do |tr|
		all_row_cells(tr) do |td|
			yield(td, trs.index(td) )
		end
	end
end

#all_body_rows(table, &b) ⇒ Object 



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# File 'lib/tag_munging.rb', line 41

def all_body_rows(table, &b)
	trs = table.xpath("./tbody/tr")
       debug('table contains ' << trs.size.to_s << ' data-rows') if self.respond_to?(:log)
	trs.each do |tr|
		yield(tr, trs.index(tr) )
	end
end

#all_row_cells(tr, &b) ⇒ Object 



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# File 'lib/tag_munging.rb', line 34

def all_row_cells(tr, &b)
	tds = tr.xpath('./td')
	tds.each do |td|
		yield(td, tds.index(td) )
	end
end

#new_tag(doc, tag, options = nil) ⇒ Object 



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# File 'lib/tag_munging.rb', line 74

def new_tag(doc, tag, options = nil)
	ntag = Nokogiri::XML::Node.new(tag, doc)
	if(options && options.respond_to?(:to_hash))
		ntag.content = options.delete(:content) if options[:content]
		ntag.parent = options.delete(:parent) if options[:parent]	
		options.each do |k,v|
			ntag[k.to_s] = v 
		end
	end
	return ntag
end

#remove_empty_rows(table) ⇒ Object 



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# File 'lib/tag_munging.rb', line 25

def remove_empty_rows(table)
	all_body_rows(table) do |tr| 
		cells = tr.xpath("./td").dup
		empty = true
		cells.each{|cell| empty = false if !cell.children.empty? }	
		tr.remove if empty
	end
end

#remove_empty_sub_tags(parent, tag) ⇒ Object 



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# File 'lib/tag_munging.rb', line 59

def remove_empty_sub_tags(parent, tag)
	tags = parent.xpath(".//" << tag)
	tags.each{|t| t.remove if t.content.chomp.strip.empty?}
end

#right_align_numbers(tags, symbol) ⇒ Object 



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# File 'lib/tag_munging.rb', line 64

def right_align_numbers(tags, symbol)
	tags.each do |tag|
		if(tag.content.chomp.match(/^-?[^\D]\d*(\.?\d*)?[^\D]?$/) )
			tag['class'] = (tag['class'] ? tag['class'] : '') << ' ' << 'right'	
			cont = tag.content
			tag.content = cont << symbol if cont && symbol
		end
	end
end

#tag_by_content(doc, tagname, content) ⇒ Object 



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# File 'lib/tag_munging.rb', line 86

def tag_by_content(doc, tagname, content)
	return doc.xpath("//" << tagname.to_s).detect{|tag| tag.content.strip == content}	
end