restore v 0.2.0

field.go

@@ -0,0 +1,40 @@
+package log
+
+import (
+	"fmt"
+	"strings"
+)
+
+// Fields slice field.
+type Fields []Field
+
+// String implement stringer.
+func (f Fields) String() string {
+	str := make([]string, len(f))
+	for i, field := range f {
+		str[i] = field.String()
+	}
+
+	return strings.Join(str, " ")
+}
+
+// NewField create field.
+func NewField(key string, value interface{}) Field {
+	return Field{Key: key, Value: value}
+}
+
+// Field struct.
+type Field struct {
+	Key   string
+	Value interface{}
+}
+
+// String implent stringer.
+func (f Field) String() string {
+	return fmt.Sprintf("%s=%+v", f.Key, f.Value)
+}
+
+// FieldError new errors field with key error.
+func FieldError(err error) Field {
+	return NewField("error", err)
+}