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Add a printer that knows how to print user-defined columns

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This commit is contained in:
Brendan Burns
2015-08-13 14:11:23 -07:00
parent ab73849437
commit de14623775
7 changed files with 302 additions and 35 deletions
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32
pkg/kubectl/sorting_printer.go
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@@ -87,6 +87,23 @@ func (r *RuntimeSort) Swap(i, j int) {
r.objs[i], r.objs[j] = r.objs[j], r.objs[i]
}
func isLess(i, j reflect.Value) (bool, error) {
switch i.Kind() {
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
return i.Int() < j.Int(), nil
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
return i.Uint() < j.Uint(), nil
case reflect.Float32, reflect.Float64:
return i.Float() < j.Float(), nil
case reflect.String:
return i.String() < j.String(), nil
case reflect.Ptr:
return isLess(i.Elem(), j.Elem())
default:
return false, fmt.Errorf("unsortable type: %v", i.Kind())
}
}
func (r *RuntimeSort) Less(i, j int) bool {
iObj := r.objs[i]
jObj := r.objs[j]
@@ -106,18 +123,9 @@ func (r *RuntimeSort) Less(i, j int) bool {
iField := iValues[0][0]
jField := jValues[0][0]
switch iField.Kind() {
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
return iField.Int() < jField.Int()
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
return iField.Uint() < jField.Uint()
case reflect.Float32, reflect.Float64:
return iField.Float() < jField.Float()
case reflect.String:
return iField.String() < jField.String()
default:
less, err := isLess(iField, jField)
if err != nil {
glog.Fatalf("Field %s in %v is an unsortable type: %s", r.field, iObj, iField.Kind().String())
}
// default to preserving order
return i < j
return less
}