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feat(
addrmgr): use localStorage instead of file-system on js
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,43 @@ | ||
| //go:build !js && !wasm | ||
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| package addrmgr | ||
|
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| import ( | ||
| "io" | ||
| "os" | ||
| ) | ||
|
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| type Store struct { | ||
| path string | ||
| } | ||
|
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| func (s *Store) Reader() (io.ReadCloser, error) { | ||
| // Open the file. | ||
| r, err := os.Open(s.path) | ||
|
|
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| // Convert into a generic error. | ||
| if os.IsNotExist(err) { | ||
| return nil, ErrNotExist | ||
| } | ||
|
|
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| return r, err | ||
| } | ||
|
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| func (s *Store) Writer() (io.WriteCloser, error) { | ||
| // Create or open the file. | ||
| return os.Create(s.path) | ||
| } | ||
|
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| func (s *Store) Remove() error { | ||
| return os.Remove(s.path) | ||
| } | ||
|
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| func (s *Store) String() string { | ||
| return s.path | ||
| } | ||
|
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| func NewStore(path string) *Store { | ||
| return &Store{ | ||
| path: path, | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,87 @@ | ||
| //go:build js && wasm | ||
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| package addrmgr | ||
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| import ( | ||
| "bytes" | ||
| "errors" | ||
| "io" | ||
| "strings" | ||
|
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| "github.com/linden/localstorage" | ||
| ) | ||
|
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| type Store struct { | ||
| path string | ||
| } | ||
|
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| func (s *Store) Reader() (io.ReadCloser, error) { | ||
| // Get the value from localStorage. | ||
| val := localstorage.Get(s.path) | ||
|
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| // Convert into a generic error. | ||
| if val == "" { | ||
| return nil, ErrNotExist | ||
| } | ||
|
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| // Create a new buffer storing our value. | ||
| buf := bytes.NewBufferString(val) | ||
|
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| // Create a NOP closer, we have nothing to do upon close. | ||
| return io.NopCloser(buf), nil | ||
| } | ||
|
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| func (s *Store) Writer() (io.WriteCloser, error) { | ||
| // Create a new writer. | ||
| return newWriter(s.path), nil | ||
| } | ||
|
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| func (s *Store) Remove() error { | ||
| // Remove the key/value from localStorage. | ||
| localstorage.Remove(s.path) | ||
|
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| return nil | ||
| } | ||
|
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| func (s *Store) String() string { | ||
| return s.path | ||
| } | ||
|
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| func NewStore(path string) *Store { | ||
| return &Store{ | ||
| path: path, | ||
| } | ||
| } | ||
|
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| // writer updates the localStorage on write. | ||
| type writer struct { | ||
| path string | ||
| closed bool | ||
| builder strings.Builder | ||
| } | ||
|
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| func (w *writer) Write(p []byte) (int, error) { | ||
| if w.closed { | ||
| return 0, errors.New("writer already closed") | ||
| } | ||
|
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| // Write the bytes to our string builder. | ||
| n, _ := w.builder.Write(p) | ||
|
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| // Update the localStorage value. | ||
| localstorage.Set(w.path, w.builder.String()) | ||
|
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| // Return the length written, | ||
| return n, nil | ||
| } | ||
|
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| func (w *writer) Close() error { | ||
| w.closed = true | ||
| return nil | ||
| } | ||
|
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| func newWriter(path string) *writer { | ||
| return &writer{ | ||
| path: path, | ||
| } | ||
| } |
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