Class: Docxgen::Templates::Parser

Inherits:
Object
  • Object
show all
Defined in:
lib/docxgen/templates/parser.rb

Constant Summary collapse

VARIABLE_REGEX = 
/({{[[:space:]]?(([[:alpha:]]|_)+([[:alnum:]]|_|\.)*(?<!\.))[[:space:]]?}})/

Class Method Summary collapse

Class Method Details

.find_variables(tr) ⇒ Object 



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# File 'lib/docxgen/templates/parser.rb', line 26

def self.find_variables(tr)
  tr.to_s.scan(VARIABLE_REGEX).map do |match|
    src, path, *_ = match

    {
      src: src,
      path: path.split(".").reject(&:empty?).map do |p|
        Integer(p) rescue next p.to_sym

        p.to_i
      end
    }
  end
end

.tr_substitute!(tr, data, remove_missing: true) ⇒ Object 



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# File 'lib/docxgen/templates/parser.rb', line 8

def self.tr_substitute!(tr, data, remove_missing: true)
  found_variables = self.find_variables(tr)

  errors = []

  found_variables.each do |var|
    value = data.dig(*var[:path])

    errors.push("No value provided for variable: #{var[:src]}") if value.nil?

    next if value.nil? && !remove_missing # Don't replace variables with empty string if remove_missing is false

    tr.substitute(var[:src], value || "")
  end

  [tr, errors]
end