Module: CartoCSSHelper::Heuristic

Includes:
Configuration
Defined in:
lib/cartocss_helper/heuristic.rb

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Configuration

#default_renderer, #find_style_file_location, #get_cartocss_project_name, #get_data_filename, #get_max_z, #get_min_z, #get_overpass_instance_url, #get_path_to_cartocss_project_folder, #get_path_to_folder_for_branch_specific_cache, #get_path_to_folder_for_cache, #get_path_to_folder_for_history_api_cache, #get_path_to_folder_for_notes_api_cache, #get_path_to_folder_for_output, #get_path_to_folder_for_overpass_cache, #get_style_file_location, #get_style_specific_data, #mapnik_reference_version_override, #path_to_kosmtik, #project_file_location, #renderer, #set_known_alternative_overpass_url, #set_mapnik_reference_version_override, #set_overpass_instance_url, #set_path_to_cartocss_project_folder, #set_path_to_folder_for_cache, #set_path_to_folder_for_output, #set_path_to_kosmtik, #set_renderer, #set_style_specific_data

Class Method Details

.get_generic_tag_value ⇒ Object 



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# File 'lib/cartocss_helper/heuristic.rb', line 101

def self.get_generic_tag_value
  return '*'
end

Instance Method Details

#get_tags ⇒ Object 



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# File 'lib/cartocss_helper/heuristic.rb', line 8

def get_tags
  tags = get_tags_from_mss
  tags.merge(get_tags_from_yaml)
  tags.merge(get_tags_from_osm2pqsql)
  # unrecovable = Set.new [['area', 'yes'], ['area', 'no']] #TODO - how this should be handled?
  # tags.merge(unrecovable)
  return tags.to_a.sort
end

#get_tags_from_mss ⇒ Object 



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# File 'lib/cartocss_helper/heuristic.rb', line 17

def get_tags_from_mss
  tags = Set.new
  filenames = Dir[Configuration.get_path_to_cartocss_project_folder + '*.mss']
  filenames.each do |filename|
    tags.merge(get_tags_from_mss_file(filename))
  end
  return tags
end

#get_tags_from_mss_file(style_filename) ⇒ Object 



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# File 'lib/cartocss_helper/heuristic.rb', line 44

def get_tags_from_mss_file(style_filename)
  possible_key_values = get_tags_from_osm2pqsql
  tags = Set.new
  # puts style_filename
  style_file = open(style_filename)
  style = style_file.read
  matched = style.scan(/\[feature = '(man_made|[^_]+)_([^']+)'\]/)
  matched.each do |element|
    key = element[0]
    if possible_key_values.include?([key, get_generic_tag_value])
      tags.add([key, element[1]])
    end
  end
  matched = style.scan(/(\w+) = '(\w+)'/)
  matched.each do |element|
    key = element[0]
    next unless key != 'feature'
    if possible_key_values.include?([key, get_generic_tag_value])
      tags.add([key, element[1]])
    end
  end
  return tags
end

#get_tags_from_osm2pqsql ⇒ Object 



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# File 'lib/cartocss_helper/heuristic.rb', line 35

def get_tags_from_osm2pqsql
  tags = Set.new
  filenames = Dir[Configuration.get_path_to_cartocss_project_folder + '*.style']
  filenames.each do |filename|
    tags.merge(get_tags_from_osm2pqsql_file(filename))
  end
  return tags
end

#get_tags_from_osm2pqsql_file(style_filename) ⇒ Object 



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# File 'lib/cartocss_helper/heuristic.rb', line 105

def get_tags_from_osm2pqsql_file(style_filename)
  tags = Set.new
  # puts style_filename
  style_file = open(style_filename)
  style = style_file.read
  matched = style.scan(/^(node,way|node|way)\s*([^ ]+)\s*text\s*($|linear|polygon|nocache)/)
  matched.each do |element|
    tags.add([element[1], get_generic_tag_value])
  end
  return tags
end

#get_tags_from_yaml ⇒ Object 



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# File 'lib/cartocss_helper/heuristic.rb', line 26

def get_tags_from_yaml
  tags = Set.new
  filenames = Dir[Configuration.get_path_to_cartocss_project_folder + '*.yaml']
  filenames.each do |filename|
    tags.merge(get_tags_from_yaml_file(filename))
  end
  return tags
end

#get_tags_from_yaml_file(yaml_filename) ⇒ Object 



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# File 'lib/cartocss_helper/heuristic.rb', line 68

def get_tags_from_yaml_file(yaml_filename)
  possible_key_values = get_tags_from_osm2pqsql
  tags = Set.new
  yaml_file = open(yaml_filename)
  yaml = yaml_file.read
  # (.*\.|)     #WHERE p.highway = 'turning_circle'
  # ("|)        #natural and other SQL keywords
  # ([^"() ]+)  #tag
  # repeat
  # =
  # '([^'()]+)' #quoted value
  matched = yaml.scan(/(.*\.|)("|)([^"() ]+)("|) = '([^'()]+)'/)
  matched.each do |element|
    key = element[2]
    value = element[4]
    if possible_key_values.include?([key, get_generic_tag_value])
      tags.add([key, value])
    end
  end
  matched = yaml.scan(/("|)([^"() ]+)("|) (NOT |)IN \(([^()]*)\)/)
  matched.each do |element|
    tag = element[1]
    key = tag.gsub(/.*\./, '')
    values = element[4]
    values_matched = values.scan(/'([^']+)'/)
    next unless possible_key_values.include?([key, get_generic_tag_value])
    values_matched.each do |value|
      tags.add([key, value[0]])
    end
  end
  return tags
end