Merge pull request swiftlang#1939 from hartbit/sr-9647-truncate-redrawing-progress

Simple fix to SR-9647 by truncating redrawing progress text

Author: hartbit

Sources/Utility/ProgressAnimation.swift

@@ -105,8 +105,16 @@ public final class RedrawingNinjaProgressAnimation: ProgressAnimationProtocol {
  assert(step <= total)
 
  terminal.clearLine()
- terminal.write("[\(step)/\(total)] ")
- terminal.write(text)
+
+ let progressText = "[\(step)/\(total)] \(text)"
+ if progressText.utf8.count > terminal.width {
+ let suffix = "…"
+ terminal.write(String(progressText.prefix(terminal.width - suffix.utf8.count)))
+ terminal.write(suffix)
+ } else {
+ terminal.write(progressText)
+ }
+
  hasDisplayedProgress = true
  }