compress

压缩

package main

import (
  "bytes"
  "compress/gzip"
  "fmt"
  "io"
  "strings"
)

func main() {
  originData := "这是一段需要压缩的文本数据，" + "重复内容" + strings.Repeat("重复内容", 100) + "，结束。"

  var compressData bytes.Buffer
  writer := gzip.NewWriter(&compressData)
  _, err := writer.Write([]byte(originData))
  if err != nil {
    panic(err)
  }
  writer.Close()

  fmt.Printf("原始数据大小：%d，压缩数据大小：%d\n", len(originData), compressData.Len())
  fmt.Printf("压缩率：%.2f%%\n", float64(compressData.Len())/float64(len(originData))*100)

  // 解压
  reader, err := gzip.NewReader(&compressData)
  if err != nil {
    panic(err)
  }
  defer reader.Close()
  readAll, err := io.ReadAll(reader)
  if err != nil {
    panic(err)
  }
  fmt.Println(string(readAll))
}