Class: Kladr

Inherits:
Object
  • Object
show all
Defined in:
lib/kladr.rb,
lib/dbf/dbf/table.rb,
lib/dbf/dbf/column.rb,
lib/dbf/dbf/record.rb,
lib/dbf/dbf/globals.rb

Defined Under Namespace

Modules: DBF Classes: House, Street

Class Method Summary collapse

Class Method Details

.create_houses(attributes) ⇒ Object 



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# File 'lib/kladr.rb', line 137

def self.create_houses(attributes)
  numbers = extract_numbers(attributes.delete(:numbers))
  numbers.each do |number|
    house = House.create(attributes.merge(:number => number))
    puts ("%30s %4s" % [house.street && house.street.name || "-", house.number]) 
  end
end

.exec_houses_schema ⇒ Object 



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# File 'lib/kladr.rb', line 72

def self.exec_houses_schema
  ActiveRecord::Migration.create_table "houses" do |t|
    t.column "number", :string, :limit => 10
    t.column "street_code", :integer
    t.column "abbrev", :string, :limit => 10
    t.column "building", :integer
    t.column "index", :integer
    t.column "house_code", :integer
    t.column "street_id", :integer
  end
  ActiveRecord::Migration.add_index :houses, [:street_code, :house_code]
end

.exec_streets_schema ⇒ Object 



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# File 'lib/kladr.rb', line 9

def self.exec_streets_schema
  ActiveRecord::Migration.create_table "streets" do |t|
    t.column "name", :string, :limit => 40
    t.column "street_code", :integer
    t.column "abbrev", :string, :limit => 10
  end
  ActiveRecord::Migration.add_index :streets, :street_code
  ActiveRecord::Migration.add_index :streets, :name
end

.extract_numbers(numbers) ⇒ Object 



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# File 'lib/kladr.rb', line 122

def self.extract_numbers(numbers)
  return [] unless numbers
  numbers.split(",").map do |part|
    if part.index("-")
      start_number, end_number = /(\d+)-(\d+)/.match(part).captures.map(&:to_i)
      step = part.index("(") ? 2 : 1
      res = []
      (start_number..end_number).step(step) {|i| res << i.to_s}
      res
    else
      part
    end
  end.flatten
end

.file_unpack(file) ⇒ Object 



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# File 'lib/kladr.rb', line 28

def self.file_unpack(file)
  return if File.exists?(file)
  return unless File.exists?(file+".gz")
  `gzip -cd #{file}.gz > #{file}`
end

.houses_import(file = File.dirname(__FILE__)+"/../BASE/DOMA.DBF") ⇒ Object 



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# File 'lib/kladr.rb', line 85

def self.houses_import(file = File.dirname(__FILE__)+"/../BASE/DOMA.DBF")
  start_time = Time.now
  file_unpack(file)
  table = Kladr::DBF::Table.new(file, :in_memory => false)
  table.columns.each {|c| c.name.replace(c.name.downcase) }
  
  exec_houses_schema rescue false
  
  puts "Table created, importing #{table.record_count} records"
  count = 0
  table_columns = House.columns.map(&:name)
  
  0.upto(table.record_count-1) do |i|
    record = table.record(i) 
    next unless record
    
    city_code = record.attributes["code"][0,2].to_i
    street_code = record.attributes["code"][11, 4].to_i
    house_code = record.attributes["code"][15, 4].to_i
    next unless city_code == 77
    next if street_code == 0
    attributes = {
      :street_code => street_code, :house_code => house_code, :abbrev => recode(record.attributes["socr"]).chars.downcase.to_s,
      :building => recode(record.attributes["korp"]), :index => record.attributes["index"].to_i
    }.reject {|field, value| !table_columns.include?(field.to_s)}
    attributes[:numbers] = recode(record.attributes["name"])
    street = Street.find_by_street_code(street_code)
    attributes[:street_id] = street.id if street
    houses = create_houses(attributes)
    count += houses.length
    if count == 1
      puts "Starting Moscow on #{i} record"
    end
  end
  puts "It took #{Time.now - start_time} seconds to import #{count} records."  
end

.import ⇒ Object 



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# File 'lib/kladr.rb', line 145

def self.import
  street_import
  houses_import
end

.recode(string) ⇒ Object 



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# File 'lib/kladr.rb', line 34

def self.recode(string)
  Iconv.iconv("UTF-8", "CP866", string).first
end

.street_import(file = File.dirname(__FILE__)+"/../BASE/STREET.DBF") ⇒ Object 



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# File 'lib/kladr.rb', line 38

def self.street_import(file = File.dirname(__FILE__)+"/../BASE/STREET.DBF")
  start_time = Time.now
  file_unpack(file)
  table = Kladr::DBF::Table.new(file, :in_memory => false)
  table.columns.each {|c| c.name.replace(c.name.downcase) }
  
  exec_streets_schema rescue false
  
  table_columns = Street.columns.map(&:name)
  
  puts "Table created, importing #{table.record_count} records"
  count = 0
  0.upto(table.record_count-1) do |i|
    record = table.record(i) 
    next unless record
    city_code = record.attributes["code"][0,2].to_i
    street_code = record.attributes["code"][11, 4].to_i
    actuality_code = record.attributes["code"][15,2].to_i
    
    next unless city_code == 77 && actuality_code == 0
    attributes = {:street_code => street_code, :name => recode(record.attributes["name"]), :abbrev => recode(record.attributes["socr"])}.
      reject {|field, value| !table_columns.include?(field.to_s)}
    street = Street.create(attributes)
    puts ("%4d %s %s" % [street.street_code, street.abbrev, street.name]) 
    count += 1
    if count == 1
      puts "Starting Moscow on #{i} record"
    end
  end
  import_time = Time.now
  
  puts "It took #{import_time - start_time} seconds to import #{count} records. #{Time.now - import_time} to build index."
end