Class: ParserGirl::Parser

Inherits:
Object
  • Object
show all
Includes:
Attributes
Defined in:
lib/parser_girl/parser.rb

Instance Method Summary collapse

Methods included from Attributes

#[], #to_h

Constructor Details

#initialize(xml = nil, attrs = nil) ⇒ Parser

Returns a new instance of Parser.



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# File 'lib/parser_girl/parser.rb', line 5

def initialize(xml=nil, attrs=nil)
  @xml = xml
  @attrs = attrs
  @stack = nil
end

Instance Method Details

#content ⇒ Object 



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# File 'lib/parser_girl/parser.rb', line 11

def content
  return @xml.dup
end

#find(needle) ⇒ Object 



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# File 'lib/parser_girl/parser.rb', line 15

def find(needle)
  haystack_base = @xml

  haystack = haystack_base
  pos = 0
  result = []
  @stack = []
  while true do
    break unless haystack =~ /\<([^!][^\>]*)\>/i

    content = $1 # tag-hit
    b = $`.length + 1 # relative beginning in haystack
    e = content.length + b + 1 # relative ending in haystack

    if content =~ /^([^\s]+)/ && $1.downcase == "script" &&
      haystack =~ /\<\/script(\s[^\>]*)?\>/i

      e = $`.length + $&.length
    end

    if content =~ /^#{needle}(\s.*)?$/i
      @stack << { :position => pos+e, :attrs => split_attr($1) }
    elsif content =~ /^\/#{needle}(\s.*)?$/i
      hash = pop(haystack_base, b+pos-1)
      result << Parser.new(hash[:content], hash[:attrs]) if hash
    end
    pos += e
    haystack = haystack_base[pos, haystack_base.length-pos]
  end
  # pop rest and append
  result += @stack.map{ |hash| Parser.new("", hash[:attrs]) }
  return Proxy.new(result)
end