1 files changed, 24 insertions, 0 deletions
diff --git a/src/utils/runes.go b/src/utils/runes.go
new file mode 100644
index 0000000..76cb5e3
--- /dev/null
+++ b/src/utils/runes.go
@@ -0,0 +1,24 @@
+package utils
+
+import (
+	rw "github.com/mattn/go-runewidth"
+)
+
+func TruncateFront(s string, w int, prefix string) string {
+	if rw.StringWidth(s) <= w {
+		return s
+	}
+	r := []rune(s)
+	pw := rw.StringWidth(prefix)
+	w -= pw
+	width := 0
+	i := len(r) - 1
+	for ; i >= 0; i-- {
+		cw := rw.RuneWidth(r[i])
+		width += cw
+		if width > w {
+			break
+		}
+	}
+	return prefix + string(r[i+1:len(r)])
+}