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urlencode.go
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urlencode.go
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package urlencode
import (
"fmt"
"net/url"
"reflect"
"strconv"
)
func Encode(valueMap map[string]interface{}) string {
data := url.Values{}
kv := make(map[string]string)
for key, value := range valueMap {
v := reflect.ValueOf(value)
appendKeyValue(kv, key, v)
}
for k, v := range kv {
data.Set(k, v)
}
return data.Encode()
}
func appendKeyValue(data map[string]string, key string, value reflect.Value) map[string]string {
kind := value.Kind()
switch kind {
case reflect.String:
data[key] = value.String()
case reflect.Int, reflect.Int8, reflect.Int32, reflect.Int64:
data[key] = fmt.Sprint(value.Int())
case reflect.Map:
appendFromMap(data, key, value)
case reflect.Slice, reflect.Array:
appendFromArray(data, key, value)
case reflect.Struct:
appendFromStruct(data, key, value)
case reflect.Ptr:
pv := reflect.Indirect(value)
if pv.Kind() == reflect.Struct {
appendFromStruct(data, key, pv)
}
default:
data[key] = ""
}
return data
}
func appendFromMap(data map[string]string, keyPrefix string, m reflect.Value) map[string]string {
for _, key := range m.MapKeys() {
v := m.MapIndex(key)
newKey := keyPrefix + "[" + key.String() + "]"
appendKeyValue(data, newKey, v)
}
return data
}
func appendFromArray(data map[string]string, keyPrefix string, arr reflect.Value) map[string]string {
l := arr.Len()
for i := 0; i < l; i++ {
v := arr.Index(i)
newKey := keyPrefix + "[" + strconv.Itoa(i) + "]"
appendKeyValue(data, newKey, v)
}
return data
}
func appendFromStruct(data map[string]string, keyPrefix string, s reflect.Value) map[string]string {
// attrNum := s.NumField()
t := s.Type()
attrNum := t.NumField()
for i := 0; i < attrNum; i++ {
field := t.Field(i)
tagValue := field.Tag.Get("urlencode")
name := field.Name
if tagValue != "" {
name = tagValue
}
newKey := keyPrefix + "[" + name + "]"
appendKeyValue(data, newKey, s.Field(i))
}
return data
}