1 files changed, 27 insertions, 0 deletions
diff --git a/lex-fetch/progress/progress.go b/lex-fetch/progress/progress.go
new file mode 100644
index 0000000..430d36e
--- /dev/null
+++ b/lex-fetch/progress/progress.go
@@ -0,0 +1,27 @@
+package progress
+
+import (
+	"fmt"
+	"io"
+	"sync"
+)
+
+type Reporter struct {
+	Total  int
+	cur    int
+	mu     sync.Mutex
+	writer io.Writer
+}
+
+func NewReporter(writer io.Writer) Reporter {
+	return Reporter{writer: writer}
+}
+
+func (r *Reporter) ReportProgress(num int) {
+	r.mu.Lock()
+	if num > r.cur {
+		fmt.Fprintf(r.writer, "%d/%d\n", num, r.Total)
+		r.cur = num
+	}
+	r.mu.Unlock()
+}