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units.go
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/
units.go
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package squadron
import (
"sort"
"github.com/pkg/errors"
)
type Units map[string]*Unit
func (u Units) Keys() []string {
if len(u) == 0 {
return nil
}
ret := make([]string, 0, len(u))
for name := range u {
ret = append(ret, name)
}
sort.Strings(ret)
return ret
}
func (u Units) Values() []*Unit {
if len(u) == 0 {
return nil
}
ret := make([]*Unit, len(u))
for _, name := range u.Keys() {
ret = append(ret, u[name])
}
return ret
}
func (u Units) Filter(names []string) (Units, error) {
if len(u) == 0 {
return nil, nil
}
if len(names) == 0 {
return u, nil
}
ret := make(Units, len(u))
for _, name := range names {
if unit, ok := u[name]; !ok {
return nil, errors.Errorf("unknown unit: %s", name)
} else {
ret[name] = unit
}
}
return ret, nil
}
func (u Units) Iterate(i func(name string, unit *Unit) error) error {
if len(u) == 0 {
return nil
}
for _, name := range u.Keys() {
if err := i(name, u[name]); err != nil {
return err
}
}
return nil
}