1 files changed, 100 insertions, 0 deletions
diff --git a/vendor/github.com/tkrajina/gpxgo/gpx/nullable_int.go b/vendor/github.com/tkrajina/gpxgo/gpx/nullable_int.go
new file mode 100644
index 0000000..1c51f3e
--- /dev/null
+++ b/vendor/github.com/tkrajina/gpxgo/gpx/nullable_int.go
@@ -0,0 +1,100 @@
+// Copyright 2013, 2014 Peter Vasil, Tomo Krajina. All
+// rights reserved. Use of this source code is governed
+// by a BSD-style license that can be found in the
+// LICENSE file.
+
+package gpx
+
+import (
+	"encoding/xml"
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+type NullableInt struct {
+	data    int
+	notNull bool
+}
+
+func (n *NullableInt) Null() bool {
+	return !n.notNull
+}
+
+func (n *NullableInt) NotNull() bool {
+	return n.notNull
+}
+
+func (n *NullableInt) Value() int {
+	return n.data
+}
+
+func (n *NullableInt) SetValue(data int) {
+	n.data = data
+	n.notNull = true
+}
+
+func (n *NullableInt) SetNull() {
+	var defaultValue int
+	n.data = defaultValue
+	n.notNull = false
+}
+
+func NewNullableInt(data int) *NullableInt {
+	result := new(NullableInt)
+	result.data = data
+	result.notNull = true
+	return result
+}
+
+func (n *NullableInt) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
+	t, err := d.Token()
+	if err != nil {
+		n.SetNull()
+		return nil
+	}
+	if charData, ok := t.(xml.CharData); ok {
+		strData := strings.Trim(string(charData), " ")
+		value, err := strconv.ParseFloat(strData, 64)
+		if err != nil {
+			n.SetNull()
+			return nil
+		}
+		n.SetValue(int(value))
+	}
+	d.Skip()
+	return nil
+}
+
+func (n *NullableInt) UnmarshalXMLAttr(attr xml.Attr) error {
+	strData := strings.Trim(string(attr.Value), " ")
+	value, err := strconv.ParseFloat(strData, 64)
+	if err != nil {
+		n.SetNull()
+		return nil
+	}
+	n.SetValue(int(value))
+	return nil
+}
+
+func (n NullableInt) MarshalXML(e *xml.Encoder, start xml.StartElement) error {
+	if n.Null() {
+		return nil
+	}
+	xmlName := xml.Name{Local: start.Name.Local}
+	e.EncodeToken(xml.StartElement{Name: xmlName})
+	e.EncodeToken(xml.CharData([]byte(fmt.Sprintf("%d", n.Value()))))
+	e.EncodeToken(xml.EndElement{Name: xmlName})
+	return nil
+}
+
+func (n NullableInt) MarshalXMLAttr(name xml.Name) (xml.Attr, error) {
+	var result xml.Attr
+	if n.Null() {
+		return result, nil
+	}
+	return xml.Attr{
+			Name:  xml.Name{Local: name.Local},
+			Value: fmt.Sprintf("%d", n.Value())},
+		nil
+}