162 lines
3.1 KiB
Go
162 lines
3.1 KiB
Go
package main
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import (
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"os"
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"io/ioutil"
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"errors"
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"time"
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)
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const (
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FSStatusOk = 0x01
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FSStatusError = 0x02
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)
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var (
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ErrFileNotExists = errors.New("file does not exist")
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ErrFileReadOnly = errors.New("file is read only")
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ErrFileWriteOnly = errors.New("file is write only")
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ErrInvalidOffset = errors.New("invalid file offset")
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ErrOffsetChanged = errors.New("offset has already been changed")
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ErrReadOpen = errors.New("only one file can be opened for reading at a time")
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ErrWriteOpen = errors.New("only one file can be opened for writing at a time")
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ErrNoRemoveRoot = errors.New("refusing to remove root directory")
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)
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type Device struct {
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}
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type FS struct {
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}
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type MyFileInfo struct {
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name string
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size uint32
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modtime time.Time
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dir bool
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}
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func (n *MyFileInfo) Name() string {
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return n.name
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}
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func (n *MyFileInfo) Size() uint32 {
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return n.size
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}
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func (n *MyFileInfo) ModTime() time.Time {
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return n.modtime
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}
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func (n *MyFileInfo) IsDir() bool {
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return n.dir
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}
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type MyDirEntry struct {
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self MyFileInfo
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}
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func (n *MyDirEntry) Info() (MyFileInfo, error) {
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return n.self, nil
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}
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type File struct {
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fs *FS
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path string
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fp *os.File
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isReadOnly bool
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isWriteOnly bool
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}
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func (i *Device) HeartRate() (uint8, error) {
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return 10, nil
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}
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func (i *Device) BatteryLevel() (uint8, error) {
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return 95, nil
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}
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func (i *Device) StepCount() (uint32, error) {
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return 27000, nil
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}
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type MotionValues struct {
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X int16
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Y int16
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Z int16
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}
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func (i *Device) Motion() (MotionValues, error) {
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return MotionValues{-12, +64, -19}, nil
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}
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func (i *Device) Address() string {
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return "FA:E4:00:00:00:00"
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}
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func (i *Device) Version() (string, error) {
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return "1.11.0", nil
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}
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func (blefs *FS) ReadDir(path string) ([]MyDirEntry, error) {
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var out []MyDirEntry
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files, err := ioutil.ReadDir("./root/" + path)
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if err != nil {
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return nil, nil
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}
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for _, f := range files {
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listing := MyFileInfo{}
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listing.modtime = f.ModTime()
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listing.size = uint32(f.Size())
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listing.name = path + "/" + f.Name()
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listing.dir = f.IsDir()
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out = append(out, MyDirEntry{self : listing})
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}
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return out, nil
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}
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func (blefs *FS) Mkdir(path string) error {
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return os.Mkdir("./root/" + path, os.ModePerm)
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}
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func (blefs *FS) Rename(old, new string) error {
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return os.Rename("./root/" + old, "./root/" + new)
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}
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func (blefs *FS) Remove(path string) error {
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return os.Remove("./root/" + path)
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}
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func (blefs *FS) Open(path string) (*File, error) {
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fp, _ := os.Open("./root/" + path)
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return &File{
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fs : blefs,
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path : path,
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fp : fp,
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isReadOnly : true,
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isWriteOnly : false,
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}, nil
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}
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func (blefs *FS) Create(path string, size uint32) (*File, error) {
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fp, _ := os.Create("./root/" + path)
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return &File{
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fs : blefs,
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path : path,
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fp : fp,
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isReadOnly : false,
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isWriteOnly : true,
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}, nil
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}
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func (fl *File) Read(b []byte) (n int, err error) {
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if fl.isWriteOnly {
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return 0, ErrFileWriteOnly
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}
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return fl.fp.Read(b)
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}
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func (fl *File) Write(b []byte) (n int, err error) {
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if fl.isReadOnly {
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return 0, ErrFileReadOnly
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}
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return fl.fp.Write(b)
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}
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func (fl *File) Close() error {
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return fl.fp.Close()
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}
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