$ go get github.com/pkg6/go-flysystem

package main
import (
    "fmt"
    "github.com/pkg6/go-flysystem"
    "github.com/pkg6/go-flysystem/local"
    "strings"
)
func main() {
    //Define the root directory of the local adapter
    root := "./_example/test_data"
    // Create local adapter
    localAdapter := local.New(&local.Config{Root: root})
    //Initialize the adapter
    adapters := flysystem.NewAdapters(localAdapter)
    adapters.Extend(local.New(&local.Config{Root: "./_example/test_data/2"}), "local2")
    var err error
    _, err = adapters.WriteReader("4.txt", strings.NewReader("test"))
    fmt.Println(err)
    adapter, err := adapters.Adapter("local2")
    _, err = adapter.WriteReader("4.txt", strings.NewReader("test"))
    fmt.Println(err)
    //Write file
    _, err = adapters.Write("1.txt", []byte("test data"))
    fmt.Println(err)
    //Write data from resource file
    _, err = adapters.WriteStream("2.txt", root+"/1.txt")
    fmt.Println(err)
    //Update file
    _, err = adapters.Update("1.txt", []byte("test update data"))
    fmt.Println(err)
    //Update data from resource file
    _, err = adapters.UpdateStream("2.txt", root+"/1.txt")
    fmt.Println(err)
    exists, _ := adapters.Exists("2.txt")
    fmt.Println(exists)
    //Read file
    read, err := adapters.Read("2.txt")
    fmt.Println(read, err)
    //Get file mime type
    mimeType, err := adapters.MimeType("2.txt")
    fmt.Println(mimeType, err)
    //Get file size
    size, err := adapters.Size("2.txt")
    fmt.Println(size, err)
    //Move file
    _, err = adapters.Move("1.txt", "4.txt")
    fmt.Println(err)
    //Copy file
    _, err = adapters.Copy("2.txt", "5.txt")
    fmt.Println(err)
}