题解 | #简单错误记录#

const rl = require("readline").createInterface({ input: process.stdin })

class Developer {
  constructor() {
    this.list = []
    this.cache = {}
  }

  get listLen () {
    return this.list.length
  }

  input (line) {
    const [path, num] = line.split(' ')
    if (!path) return
    const fileName = this.getFileName(path)
    const key = `${fileName}${num}`
    if (this.cache[key]) {
      this.cache[key].count ++
    } else {
      const obj = Object.create(null)
      obj.fileName = fileName
      obj.num = num
      obj.count = 1

      this.cache[key] = obj

      this.list.push(obj)
    }
  }

  output () {
    if (!this.listLen) return
    let len = 8
    while (len > 0) {
      if (len > this.listLen) {
        len = this.listLen
      }
      const obj = this.list[this.listLen - len]
      console.log(`${obj.fileName} ${obj.num} ${obj.count}`)
      len --
    }
  }

  getFileName (path, bit = 16) {
    const items = path.split('\\')
    const name = items[items.length - 1]
    return name.length <= bit ? name : name.slice(0 - bit)
  }
}

const developer = new Developer()
rl.on('line', (line) => {
  if (line === 'end') {
    rl.close()
    return
  }
  developer.input(line)
})

rl.on('close', () => {
  developer.output()
})