Class: OoxmlParser::DocxFormula

Inherits:
Object
  • Object
show all
Defined in:
lib/ooxml_parser/docx_parser/docx_data/document_structure/docx_paragraph/docx_formula.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(elements = []) ⇒ DocxFormula

Returns a new instance of DocxFormula.



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# File 'lib/ooxml_parser/docx_parser/docx_data/document_structure/docx_paragraph/docx_formula.rb', line 18

def initialize(elements = [])
  @elements = elements
end

Instance Attribute Details

#elements ⇒ Object

Returns the value of attribute elements.



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# File 'lib/ooxml_parser/docx_parser/docx_data/document_structure/docx_paragraph/docx_formula.rb', line 16

def elements
  @elements
end

Class Method Details

.parse(element) ⇒ Object 



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# File 'lib/ooxml_parser/docx_parser/docx_data/document_structure/docx_paragraph/docx_formula.rb', line 22

def self.parse(element)
  formula = DocxFormula.new
  element.xpath('*').each do |sub_element|
    if sub_element.name == 'r'
      formula.elements << parse_math_character(sub_element)
    elsif sub_element.name == 'box'
      box = Box.new
      box.element = parse_math_character(sub_element)
      formula.elements << box
    elsif sub_element.name == 'borderBox'
      box = Box.new
      box.borders = true
      box.element = parse_math_character(sub_element)
      formula.elements << box
    elsif sub_element.name == 'func'
      function = Function.new
      sub_element.xpath('m:fName').each do |f_name|
        function.name = DocxFormula.parse(f_name)
      end
      function.argument = DocxFormula.parse(sub_element)
      formula.elements << function
    elsif sub_element.name == 'rad'
      radical = Radical.new
      radical.value = DocxFormula.parse(sub_element)
      sub_element.xpath('m:deg').each do |deg|
        radical.degree = DocxFormula.parse(deg)
        radical.degree = 2 if radical.degree.nil?
      end
      formula.elements << radical
    elsif sub_element.name == 'e'
      formula.elements << DocxFormula.parse(sub_element)
    elsif sub_element.name == 'eqArr'
      sub_element.xpath('m:e').each do |e|
        formula.elements << DocxFormula.parse(e)
      end
    elsif sub_element.name == 'd'
      delimeter = Delimiter.new
      sub_element.xpath('m:dPr').each do |d_pr|
        d_pr.xpath('m:begChr').each do |beg_chr|
          delimeter.begin_character = beg_chr.attribute('val').value
        end
        d_pr.xpath('m:endChr').each do |end_chr|
          delimeter.end_character = end_chr.attribute('val').value
        end
      end
      delimeter.value = DocxFormula.parse(sub_element)
      formula.elements << delimeter
    elsif sub_element.name == 'nary'
      operator = Operator.new
      sub_element.xpath('m:naryPr').each do |nary_pr|
        nary_pr.xpath('m:chr').each do |chr|
          operator.operator = chr.attribute('val').value
        end
      end
      sub_element.xpath('m:sub').each do |sub|
        operator.bottom_value = DocxFormula.parse(sub)
      end
      sub_element.xpath('m:sup').each do |sup|
        operator.top_value = DocxFormula.parse(sup)
      end
      operator.value = DocxFormula.parse(sub_element)
      formula.elements << operator
    elsif sub_element.name == 'sSubSup'
      index = Index.new
      index.value = DocxFormula.parse(sub_element)
      sub_element.xpath('m:sup').each do |sup|
        index.top_index = DocxFormula.parse(sup)
      end
      sub_element.xpath('m:sub').each do |sub|
        index.top_index = DocxFormula.parse(sub)
      end
      formula.elements << index
    elsif sub_element.name == 'sSup'
      index = Index.new
      index.value = DocxFormula.parse(sub_element)
      sub_element.xpath('m:sup').each do |sup|
        index.top_index = DocxFormula.parse(sup)
      end
      formula.elements << index
    elsif sub_element.name == 'sSub'
      index = Index.new
      index.value = DocxFormula.parse(sub_element)
      sub_element.xpath('m:sub').each do |sub|
        index.top_index = DocxFormula.parse(sub)
      end
      formula.elements << index
    elsif sub_element.name == 'f'
      fraction = Fraction.new
      sub_element.xpath('m:num').each do |num|
        fraction.numerator = DocxFormula.parse(num)
      end
      sub_element.xpath('m:den').each do |den|
        fraction.denominator = DocxFormula.parse(den)
        formula.elements << fraction
      end
    elsif sub_element.name == 'm'
      matrix = Matrix.new
      columns_count = 1
      j = 0
      sub_element.xpath('m:mPr').each do |m_pr|
        m_pr.xpath('m:mcs').each do |mcs|
          mcs.xpath('m:mc').each do |mc|
            mc.xpath('m:mcPr').each do |mc_pr|
              mc_pr.xpath('m:count').each do |count|
                columns_count = count.attribute('val').value
              end
            end
          end
        end
      end
      sub_element.xpath('m:mr').each do |mr|
        i = 0
        matrix.rows << MatrixRow.new(columns_count.to_i)
        mr.xpath('m:e').each do |e|
          matrix.rows[j].columns[i] = DocxFormula.parse(e)
          i += 1
        end
        j += 1
      end
      formula.elements << matrix
    elsif sub_element.name == 'bar'
      bar = Bar.new
      sub_element.xpath('m:barPr').each do |bar_pr|
        bar_pr.xpath('m:pos').each do |pos|
          bar.position = pos.attribute('val').value
        end
      end
      bar.element = DocxFormula.parse(sub_element)
      formula.elements << bar
    elsif sub_element.name == 'acc'
      accent = Accent.new
      sub_element.xpath('m:accPr').each do |acc_pr|
        acc_pr.xpath('m:chr').each do |chr|
          accent.symbol = chr.attribute('val').value
        end
      end
      accent.element = DocxFormula.parse(sub_element)
      formula.elements << accent
    elsif sub_element.name == 'groupChr'
      group_char = GroupChar.new
      sub_element.xpath('m:groupChrPr').each do |group_chr_pr|
        group_chr_pr.xpath('m:chr').each do |chr|
          group_char.symbol = chr.attribute('val').value
        end
        group_chr_pr.xpath('m:pos').each do |pos|
          group_char.position = pos.attribute('val').value
        end
        group_chr_pr.xpath('vertJc').each do |vert_jc|
          group_char.vertical_align = vert_jc.attribute('val').value
        end
      end
      group_char.element = DocxFormula.parse(sub_element)
      formula.elements << group_char
    elsif sub_element.name == 'limUpp'
      limit = Limit.new
      limit.type = 'Upper'
      limit.element = DocxFormula.parse(sub_element)
      sub_element.xpath('m:lim').each do |lim|
        limit.limit = DocxFormula.parse(lim)
      end
      formula.elements << limit
    elsif sub_element.name == 'limLow'
      limit = Limit.new
      limit.type = 'Lower'
      limit.element = DocxFormula.parse(sub_element)
      sub_element.xpath('m:lim').each do |lim|
        limit.limit = DocxFormula.parse(lim)
      end
      formula.elements << limit
    end
  end
  return nil if formula.elements.empty?
  formula
end

.parse_math_character(element) ⇒ Object 



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# File 'lib/ooxml_parser/docx_parser/docx_data/document_structure/docx_paragraph/docx_formula.rb', line 197

def self.parse_math_character(element)
  element.xpath('m:t').each do |t|
    return t.text
  end
end