55 lines
1.6 KiB
Go
55 lines
1.6 KiB
Go
package json
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import (
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"encoding/json"
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"fmt"
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"reflect"
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cr "github.com/corpix/reflect"
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)
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// SetValueWithJSONStringArray set the value of json string array
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// raw([]byte) is ["1", {"a": 1}, [1, 2]]
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// targets([]interface{}) is array of pointer ex) *int, *string, *[], *map, *struct
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func SetValueWithJSONStringArrayBytes(raw []byte, targets []interface{}) error {
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var values []string
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if err := json.Unmarshal(raw, &values); err != nil {
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return err
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}
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return SetValueWithJSONStringArray(values, targets)
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}
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func SetValueWithJSONStringArray(values []string, targets []interface{}) error {
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if len(targets) != len(values) {
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return fmt.Errorf("Count of raw[%d] and targets[%d] is not same", len(values), len(targets))
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}
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for indexI := 0; indexI < len(values); indexI++ {
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target := targets[indexI]
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value := values[indexI]
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if reflect.Ptr != reflect.TypeOf(target).Kind() {
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return fmt.Errorf("Type of target[%d] must be ptr but is %s, value=%s", indexI, reflect.TypeOf(target).Kind(), value)
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}
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switch reflect.TypeOf(target).Elem().Kind() {
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case reflect.Array, reflect.Slice, reflect.Map, reflect.Struct:
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if err := json.Unmarshal([]byte(value), &target); nil != err {
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return err
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}
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case reflect.Ptr:
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return fmt.Errorf("Type of target[%d] cannot be double ptr, value=%s", indexI, value)
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default:
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cv, err := cr.ConvertToType(value, reflect.TypeOf(target).Elem())
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if nil != err {
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return fmt.Errorf("Type conversion of value[%s] has been failed to %s[%d]", value, reflect.TypeOf(target).Elem().Kind(), indexI)
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}
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reflect.ValueOf(target).Elem().Set(reflect.ValueOf(cv))
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}
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}
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return nil
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}
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