preparing for v0.5

src/watcher/file_watcher.go

@@ -0,0 +1,25 @@
+package watcher
+
+import (
+	"context"
+	"path"
+
+	E "github.com/yusing/go-proxy/error"
+)
+
+type fileWatcher struct {
+	filename string
+}
+
+func NewFileWatcher(filename string) Watcher {
+	if path.Base(filename) != filename {
+		panic("filename must be a relative path")
+	}
+	return &fileWatcher{filename: filename}
+}
+
+func (f *fileWatcher) Events(ctx context.Context) (<-chan Event, <-chan E.NestedError) {
+	return fwHelper.Add(ctx, f)
+}
+
+var fwHelper = newFileWatcherHelper()