Class: CopyPastePDF::Table

Inherits:
Array
  • Object
show all
Defined in:
lib/copy_paste_pdf/table.rb

Instance Method Summary collapse

Instance Method Details

#copy_into_cell_below(*indices) {|row| ... } ⇒ Object

Copies the values of the given cells from a line to any following lines whose corresponding cells are empty.

Parameters:

  • indices (Array) —

    the cell indices to copy

Yield Parameters:

  • row (Array) —

    a row in the table

Yield Returns:

  • (Boolean) —

    whether to skip the row from the table

Raises:



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# File 'lib/copy_paste_pdf/table.rb', line 21

def copy_into_cell_below(*indices)
  source = nil
  each do |row|
    if !block_given? || !yield(row)
      values = row.values_at(*indices)
      case values.count(&:nil?)
      when 0
        source = values
      when indices.size
        if source
          indices.each_with_index do |index,i|
            if row[index]
              raise CopyToNonEmptyCellError, "destination cell #{index} already has a value #{row[index]}"
            else
              row[index] = source[i]
            end
          end
        else
          raise MissingSourceError, "#{row} is a destination, but it has no source"
        end
      else
        raise InvalidRowError, "#{row} is neither a source nor a destination"
      end
    end
  end
end

#merge_into_cell_above(*indices) ⇒ Object

Merges the values of the given cells from a line, whose other cells are empty, into the corresponding cells of the prececeding line.

Parameters:

  • indices (Array) —

    the cell indices to merge

Raises:



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# File 'lib/copy_paste_pdf/table.rb', line 53

def merge_into_cell_above(*indices)
  each_with_index.reverse_each do |row,i|
    if row.each_with_index.all?{|value,j| value.nil? || indices.include?(j)}
      indices.each do |index|
        if self[i - 1][index]
          self[i - 1][index] = "#{self[i - 1][index]}\n#{row[index]}"
        else
          raise MergeWithEmptyCellError, "cell #{index} is empty and can't be merged"
        end
      end
      delete_at(i)
    end
  end
end

#remove_empty_rows! ⇒ Object

Removes all empty rows from the table.



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# File 'lib/copy_paste_pdf/table.rb', line 4

def remove_empty_rows!
  reject! do |row|
    row.all?(&:nil?)
  end
end