Added sorting options -n,-d,-i

cmd/list.go

@@ -18,13 +18,40 @@ import (
 	"fmt"
 	"log"
 	"regexp"
+	"sort"
 	"strings"
 
+	composeAPI "github.com/compose/gocomposeapi"
+
 	"github.com/spf13/cobra"
 )
 
 var listdbtype string
 var listfilter string
+var bytype bool
+var byname bool
+var byid bool
+
+//ByDBType sorts by type
+type ByDBType []composeAPI.Deployment
+
+func (a ByDBType) Len() int           { return len(a) }
+func (a ByDBType) Swap(i, j int)      { a[i], a[j] = a[j], a[i] }
+func (a ByDBType) Less(i, j int) bool { return a[i].Type < a[j].Type }
+
+//ByName sorts by name
+type ByName []composeAPI.Deployment
+
+func (a ByName) Len() int           { return len(a) }
+func (a ByName) Swap(i, j int)      { a[i], a[j] = a[j], a[i] }
+func (a ByName) Less(i, j int) bool { return strings.ToLower(a[i].Name) < strings.ToLower(a[j].Name) }
+
+//ByID sorts by ID
+type ByID []composeAPI.Deployment
+
+func (a ByID) Len() int           { return len(a) }
+func (a ByID) Swap(i, j int)      { a[i], a[j] = a[j], a[i] }
+func (a ByID) Less(i, j int) bool { return a[i].ID < a[j].ID }
 
 // listCmd represents the new list deployments command
 var listCmd = &cobra.Command{
@@ -50,6 +77,14 @@ var listCmd = &cobra.Command{
 				fmt.Printf("%-24s %-14s %-40s\n", "ID", "Type", "Name")
 				fmt.Printf("%-24s %-14s %-40s\n", strings.Repeat("-", 24), strings.Repeat("-", 14), strings.Repeat("-", 40))
 
+				if bytype {
+					sort.Sort(ByDBType(*deployments))
+				} else if byid {
+					sort.Sort(ByID(*deployments))
+				} else if byname {
+					sort.Sort(ByName(*deployments))
+				}
+
 				for _, v := range *deployments {
 					if (listdbtype == "" || listdbtype == v.Type) && matcher.MatchString(v.Name) {
 						fmt.Printf("%-24s %-14s %-40s\n", v.ID, v.Type, v.Name)
@@ -66,4 +101,7 @@ func init() {
 	RootCmd.AddCommand(listCmd)
 	listCmd.Flags().StringVarP(&listdbtype, "type", "t", "", "Only this database type")
 	listCmd.Flags().StringVarP(&listfilter, "filter", "f", "", "Regular expression to filter names on")
+	listCmd.Flags().BoolVarP(&byname, "sortname", "n", false, "Sort by name")
+	listCmd.Flags().BoolVarP(&bytype, "sorttype", "d", false, "Sort by type")
+	listCmd.Flags().BoolVarP(&byid, "sortid", "i", false, "Sort by id")
 }