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[io] 系统读写工具库

  1. 把后面的 var_2(io.Reader) 的输出接入到 var_1(io.Writer) 中 fn io.Copy(var_1: io.Writer, var_2: io.Reader): (int64, error)
  2. io.Copy 增加了缓冲区限制，详细用法可以参考Golang函数 fn io.CopyBuffer(var_1: io.Writer, var_2: io.Reader, var_3: []uint8): (int64, error)
  3. io.Copy 增加了长度限制，详细用法可以参考Golang函数 fn io.CopyN(var_1: io.Writer, var_2: io.Reader, var_3: int64): (int64, error)
  4. 读取 io.Reader 的前几个字节 fn io.LimitReader(var_1: io.Reader, var_2: int64): io.Reader
  5. 把多个 reader 融合成一个 fn io.MultiReader(vars: ...io.Reader): io.Reader
  6. 按照块(Section)来读一个 Reader fn io.NewSectionReader(var_1: io.ReaderAt, var_2: int64, var_3: int64): *io.SectionReader
  7. 如果读到 Nop/Null/空字符，就关掉 io.Reader fn io.NopCloser(var_1: io.Reader): io.ReadCloser
  8. 构建一个读写管道 fn io.Pipe(): (*io.PipeReader, *io.PipeWriter)
  9. 读出 io.Reader 的全部内容 fn io.ReadAll(var_1: io.Reader): ([]uint8, error)
  10. fn io.ReadAtLeast(var_1: io.Reader, var_2: []uint8, var_3: int): (int, error)
  11. 每一秒钟读一次 reader 中的内容，回调函数包含缓冲区内容 fn io.ReadEvery1s(var_1: context.Context, var_2: io.Reader, var_3: func([]uint8) bool)
  12. 读一个文件中的全部内容 fn io.ReadFile(var_1: string): ([]uint8, error)
  13. 读满一个缓冲区 fn io.ReadFull(var_1: io.Reader, var_2: []uint8): (int, error)
  14. io.Reader 分流，包装出一个 reader，读新的 Reader，读出来的值会写入 var_2(io.Writer)fn io.TeeReader(var_1: io.Reader, var_2: io.Writer): io.Reader
  15. fn io.WriteString(var_1: io.Writer, var_2: string): (int, error)
  16. io.Discard: io.discard = <nil>
  17. io.EOF: *errors.errorString = <nil>