internal/progress: Add progress meter

1 files changed, 30 insertions, 0 deletions

diff --git a/internal/progress/meter.go b/internal/progress/meter.go
new file mode 100644
index 00000000..3c0079dd
--- /dev/null
+++ b/internal/progress/meter.go
@@ -0,0 +1,30 @@
+package progress
+
+import (
+	"io"
+	"time"
+)
+
+// Meter renders one in-place progress line.
+type Meter struct {
+	writer io.Writer
+	flush  func() error
+
+	title      string
+	total      uint64
+	delay      time.Duration
+	sparse     bool
+	throughput bool
+
+	startedAt      time.Time
+	nextUpdateAt   time.Time
+	nextThroughput time.Time
+
+	lastDone     uint64
+	lastBytes    uint64
+	lastPercent  int
+	lastCounterW int
+	sawValue     bool
+
+	throughputSuffix string
+}