mirror of https://github.com/containers/podman.git
103 lines
2.2 KiB
Go
103 lines
2.2 KiB
Go
package util
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
"net/url"
|
|
"reflect"
|
|
"strconv"
|
|
"strings"
|
|
|
|
jsoniter "github.com/json-iterator/go"
|
|
)
|
|
|
|
func IsSimpleType(f reflect.Value) bool {
|
|
if _, ok := f.Interface().(fmt.Stringer); ok {
|
|
return true
|
|
}
|
|
|
|
switch f.Kind() {
|
|
case reflect.Bool, reflect.Int, reflect.Int64, reflect.Uint, reflect.Uint64, reflect.String:
|
|
return true
|
|
}
|
|
|
|
return false
|
|
}
|
|
|
|
func SimpleTypeToParam(f reflect.Value) string {
|
|
if s, ok := f.Interface().(fmt.Stringer); ok {
|
|
return s.String()
|
|
}
|
|
|
|
switch f.Kind() {
|
|
case reflect.Bool:
|
|
return strconv.FormatBool(f.Bool())
|
|
case reflect.Int, reflect.Int64:
|
|
// f.Int() is always an int64
|
|
return strconv.FormatInt(f.Int(), 10)
|
|
case reflect.Uint, reflect.Uint64:
|
|
// f.Uint() is always an uint64
|
|
return strconv.FormatUint(f.Uint(), 10)
|
|
case reflect.String:
|
|
return f.String()
|
|
}
|
|
|
|
panic("the input parameter is not a simple type")
|
|
}
|
|
|
|
func Changed(o interface{}, fieldName string) bool {
|
|
r := reflect.ValueOf(o)
|
|
value := reflect.Indirect(r).FieldByName(fieldName)
|
|
return !value.IsNil()
|
|
}
|
|
|
|
func ToParams(o interface{}) (url.Values, error) {
|
|
params := url.Values{}
|
|
if o == nil || reflect.ValueOf(o).IsNil() {
|
|
return params, nil
|
|
}
|
|
json := jsoniter.ConfigCompatibleWithStandardLibrary
|
|
s := reflect.ValueOf(o)
|
|
if reflect.Ptr == s.Kind() {
|
|
s = s.Elem()
|
|
}
|
|
sType := s.Type()
|
|
for i := 0; i < s.NumField(); i++ {
|
|
fieldName := sType.Field(i).Name
|
|
if !Changed(o, fieldName) {
|
|
continue
|
|
}
|
|
fieldName = strings.ToLower(fieldName)
|
|
f := s.Field(i)
|
|
if reflect.Ptr == f.Kind() {
|
|
f = f.Elem()
|
|
}
|
|
switch {
|
|
case IsSimpleType(f):
|
|
params.Set(fieldName, SimpleTypeToParam(f))
|
|
case f.Kind() == reflect.Slice:
|
|
for i := 0; i < f.Len(); i++ {
|
|
elem := f.Index(i)
|
|
if IsSimpleType(elem) {
|
|
params.Add(fieldName, SimpleTypeToParam(elem))
|
|
} else {
|
|
return nil, errors.New("slices must contain only simple types")
|
|
}
|
|
}
|
|
case f.Kind() == reflect.Map:
|
|
lowerCaseKeys := make(map[string][]string)
|
|
iter := f.MapRange()
|
|
for iter.Next() {
|
|
lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
|
|
}
|
|
s, err := json.MarshalToString(lowerCaseKeys)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
params.Set(fieldName, s)
|
|
}
|
|
}
|
|
return params, nil
|
|
}
|