@geolonia/japanese-addresses の紛らわしい町丁目（「◯◯町」と「◯◯」が共存）

stdout.csv

test.js

const fs = require('fs')

const towns = JSON.parse(fs.readFileSync('/dev/stdin', 'utf8'))

const cities = towns.reduce((prev, town) => {
  const code = town.市区町村コード
  prev[code] ? prev[code].push(town) : (prev[code] = [town])
  return prev
}, {})

const codes = Object.keys(cities)

let results = ['町なし', '町あり']

for (const code of codes) {
  const cityTowns = cities[code]
  const cityCount = cityTowns.length

  for (let i = 0; i < cityCount; i++) {
    for (let j = i + 1; j < cityCount; j++) {
      const townName1 = cityTowns[i].大字町丁目名
      const townName2 = cityTowns[j].大字町丁目名
      if (
        (townName1.indexOf('町') !== -1 && townName2.indexOf('町') === -1) ||
        (townName1.indexOf('町') === -1 && townName2.indexOf('町') !== -1)
      ) {
        if (townName1.replace(/町/g, '') === townName2.replace(/町/g, '')) {
          const addressFull1 = [
            cityTowns[i].都道府県名,
            cityTowns[i].市区町村名,
            cityTowns[i].大字町丁目名,
            // cityTowns[i]['小字・通称名'] || '',
          ].join('')
          const addressFull2 = [
            cityTowns[j].都道府県名,
            cityTowns[j].市区町村名,
            cityTowns[j].大字町丁目名,
            // cityTowns[j]['小字・通称名'] || '',
          ].join('')

          const pair = [addressFull1, addressFull2]
          pair.sort()
          results.push(pair.join(','))
        }
      }
    }
  }
}

process.stdout.write([...new Set(results)].join('\n') + '\n')

test.sh

curl -sL https://github.com/geolonia/japanese-addresses/raw/develop/data/latest.csv | npx csv2json | node test.js > stdout.csv