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renderer.go
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/
renderer.go
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package svgparser
import (
"encoding/xml"
"fmt"
"io"
)
// Render renders element to SVG
func Render(e *Element, w io.Writer) error {
encoder := xml.NewEncoder(w)
if err := e.Encode(encoder); err != nil {
return fmt.Errorf("Could not render element: %s", err)
}
return encoder.Flush()
}
// Serialize serializes element
func (e *Element) Serialize() xml.StartElement {
var attributes []xml.Attr
for name, value := range e.Attributes {
attr := xml.Attr{
Name: xml.Name{Local: name},
Value: value,
}
attributes = append(attributes, attr)
}
return xml.StartElement{
Name: xml.Name{Local: e.Name},
Attr: attributes,
}
}
// Encode encodes the element
func (e *Element) Encode(encoder *xml.Encoder) error {
start := e.Serialize()
if err := encoder.EncodeToken(start); err != nil {
return err
}
end := start.End()
var content xml.Token
content = xml.CharData(e.Content)
encoder.EncodeToken(content)
for _, child := range e.Children {
if err := child.Encode(encoder); err != nil {
return err
}
}
return encoder.EncodeToken(end)
}