confirm_merge.js

#!/usr/bin/env node

const fs = require("fs");

let hash = {},
  schools = fs.readFileSync("data/school.txt", "utf8").trim().split("\n");

for (let [idx, line] of schools.entries()) {
  line = line.trim();
  if (!line.length || line[0] === "#") continue;
  hash[line.split(",")[2]] = idx;
}
let n = schools.length;

let data = fs.readFileSync("dist/merge_preview.txt", "utf8").split("\n");

for (let line of data) {
  line = line.trim();
  if (!line.length || line[0] === "#") continue;
  let [cmd, ...data] = line.split(" ");
  switch (cmd) {
    case "b": {
      let [name, origin] = data;
      let idx = hash[origin];
      console.assert(idx != null, line);
      schools[idx] += `,${name}`;
      break;
    }
    case "f": {
      let [name, origin] = data;
      let idx = hash[origin];
      console.assert(idx != null, line);
      let segments = schools[idx].split(",");
      segments.splice(2, 0, name);
      schools[idx] = segments.join(",");
      break;
    }
    case "c": {
      let [province, city, name] = data;
      schools.push(`${province},${city},${name}`);
      hash[name] = n++;
      break;
    }
  }
}

fs.writeFileSync("data/school_new.txt", schools.join("\n") + "\n", "utf8");