/
xml.go
72 lines (63 loc) · 1.75 KB
/
xml.go
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package tvdb
import "encoding/xml"
import "reflect"
import "io"
import "errors"
import "strings"
func GetXml(reader io.Reader, result interface{}) (err error) {
decoder := xml.NewDecoder(reader)
return decoder.Decode(result)
}
func GetXmlList(reader io.Reader, elementName string, result interface{}) (err error) {
// Get []<type> (dereference *[]<type>)
slice := reflect.ValueOf(result).Elem()
elementType := slice.Type().Elem()
// Skip to the first start tag (the actual element)
decoder := xml.NewDecoder(reader)
var start xml.StartElement
start, err = xmlSkipUntilStart(decoder)
if err != nil {
return
}
// Read subsequent elements, constructing and decoding an ElementType for each
for {
start, err = xmlSkipUntilStart(decoder)
if err == io.EOF {
return nil
}
if err != nil {
return
}
if start.Name.Local != elementName {
return errors.New("Found XML element " + start.Name.Local + ", expected only " + elementName)
}
// New returns a pointer to the value, so we need to get the value itself
newValuePtr := reflect.New(elementType)
decoder.DecodeElement(newValuePtr.Interface(), &start)
slice.Set(reflect.Append(slice, newValuePtr.Elem()))
}
}
func xmlSkipUntilStart(decoder *xml.Decoder) (start xml.StartElement, err error) {
for {
// Read tokens from the XML document in a stream.
var token xml.Token
token, err = decoder.Token()
if err != nil {
return
}
var ok bool
start, ok = token.(xml.StartElement)
if ok {
return
}
}
}
type PipeDelimitedString []string
func (array *PipeDelimitedString) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
var content string
if err := d.DecodeElement(&content, &start); err != nil {
return err
}
*array = strings.Split(content, "|")
return nil
}