mirror of https://github.com/go-gorm/gorm.git
121 lines
2.4 KiB
Go
121 lines
2.4 KiB
Go
package gorm
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import (
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"bytes"
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"database/sql"
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"reflect"
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"strconv"
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"strings"
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"time"
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)
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var toSnakeMap map[string]string
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var toUpperMap map[string]string
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func init() {
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toSnakeMap = map[string]string{}
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toUpperMap = map[string]string{}
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}
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func toSnake(u string) string {
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if v := toSnakeMap[u]; v != "" {
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return v
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}
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buf := bytes.NewBufferString("")
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for i, v := range u {
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if i > 0 && v >= 'A' && v <= 'Z' {
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buf.WriteRune('_')
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}
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buf.WriteRune(v)
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}
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s := strings.ToLower(buf.String())
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toSnakeMap[u] = s
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return s
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}
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func snakeToUpperCamel(s string) string {
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if v := toUpperMap[s]; v != "" {
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return v
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}
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buf := bytes.NewBufferString("")
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for _, v := range strings.Split(s, "_") {
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if len(v) > 0 {
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buf.WriteString(strings.ToUpper(v[:1]))
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buf.WriteString(v[1:])
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}
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}
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u := buf.String()
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toUpperMap[s] = u
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return u
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}
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func toSearchableMap(attrs ...interface{}) (result interface{}) {
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if len(attrs) > 1 {
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if str, ok := attrs[0].(string); ok {
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result = map[string]interface{}{str: attrs[1]}
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}
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} else if len(attrs) == 1 {
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if attr, ok := attrs[0].(map[string]interface{}); ok {
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result = attr
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}
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if attr, ok := attrs[0].(interface{}); ok {
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result = attr
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}
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}
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return
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}
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func setFieldValue(field reflect.Value, value interface{}) bool {
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if field.IsValid() && field.CanAddr() {
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switch field.Kind() {
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case reflect.Int, reflect.Int32, reflect.Int64:
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if str, ok := value.(string); ok {
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value, _ = strconv.Atoi(str)
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}
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field.SetInt(reflect.ValueOf(value).Int())
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default:
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if scanner, ok := field.Addr().Interface().(sql.Scanner); ok {
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scanner.Scan(value)
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} else {
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field.Set(reflect.ValueOf(value))
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}
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}
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return true
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}
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return false
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}
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func isBlank(value reflect.Value) bool {
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switch value.Kind() {
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case reflect.Int, reflect.Int64, reflect.Int32:
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return value.Int() == 0
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case reflect.String:
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return value.String() == ""
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case reflect.Slice:
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return value.Len() == 0
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case reflect.Struct:
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time_value, is_time := value.Interface().(time.Time)
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if is_time {
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return time_value.IsZero()
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} else {
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_, is_scanner := reflect.New(value.Type()).Interface().(sql.Scanner)
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if is_scanner {
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return !value.FieldByName("Valid").Interface().(bool)
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} else {
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m := &Model{data: value.Interface()}
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fields := m.columnsHasValue("other")
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if len(fields) == 0 {
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return true
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}
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}
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}
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}
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return false
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}
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