photoprism/internal/entity/values.go
2021-11-21 14:05:07 +01:00

82 lines
1.5 KiB
Go

package entity
import (
"reflect"
"strings"
)
const (
TrimTypeString = 32
)
// Values is a shortcut for map[string]interface{}
type Values map[string]interface{}
// GetValues extracts entity Values.
func GetValues(m interface{}, omit ...string) (result Values) {
skip := func(name string) bool {
for _, s := range omit {
if name == s {
return true
}
}
return false
}
result = make(map[string]interface{})
elem := reflect.ValueOf(m).Elem()
relType := elem.Type()
for i := 0; i < relType.NumField(); i++ {
name := relType.Field(i).Name
if skip(name) {
continue
}
result[name] = elem.Field(i).Interface()
}
return result
}
// ToASCII removes all non-ascii characters from a string and returns it.
func ToASCII(s string) string {
result := make([]rune, 0, len(s))
for _, r := range s {
if r <= 127 {
result = append(result, r)
}
}
return string(result)
}
// Trim shortens a string to the given number of characters, and removes all leading and trailing white space.
func Trim(s string, maxLen int) string {
s = strings.TrimSpace(s)
l := len(s)
if l <= maxLen {
return s
} else {
return s[:l-1]
}
}
// SanitizeTypeString converts a type string to lowercase, omits invalid runes, and shortens it if needed.
func SanitizeTypeString(s string) string {
return Trim(ToASCII(strings.ToLower(s)), TrimTypeString)
}
// TypeString returns an entity type string for logging.
func TypeString(entityType string) string {
if entityType == "" {
return "unknown"
}
return entityType
}