refactor: break up cli pkg into nice small chunks

cli/formatter/formatter.go

@@ -0,0 +1,52 @@
+package formatter
+
+import (
+	"fmt"
+	"os"
+	"strings"
+	"time"
+
+	"github.com/docker/cli/cli/command/formatter"
+	"github.com/docker/go-units"
+	"github.com/olekukonko/tablewriter"
+)
+
+func ShortenID(str string) string {
+	return str[:12]
+}
+
+func Truncate(str string) string {
+	return fmt.Sprintf(`"%s"`, formatter.Ellipsis(str, 19))
+}
+
+// RemoveSha remove image sha from a string that are added in some docker outputs
+func RemoveSha(str string) string {
+	return strings.Split(str, "@")[0]
+}
+
+// HumanDuration from docker/cli RunningFor() to be accessable outside of the class
+func HumanDuration(timestamp int64) string {
+	date := time.Unix(timestamp, 0)
+	now := time.Now().UTC()
+	return units.HumanDuration(now.Sub(date)) + " ago"
+}
+
+func CreateTable(columns []string) *tablewriter.Table {
+	table := tablewriter.NewWriter(os.Stdout)
+	table.SetHeader(columns)
+
+	// Settings to create very bare tab padded table
+	table.SetAutoWrapText(false)
+	table.SetAutoFormatHeaders(true)
+	table.SetHeaderAlignment(tablewriter.ALIGN_LEFT)
+	table.SetAlignment(tablewriter.ALIGN_LEFT)
+	table.SetCenterSeparator("")
+	table.SetColumnSeparator("")
+	table.SetRowSeparator("")
+	table.SetHeaderLine(false)
+	table.SetBorder(false)
+	table.SetTablePadding("\t") // pad with tabs
+	table.SetNoWhiteSpace(true)
+	table.SetColWidth(1)
+	return table
+}