github.com/printesoi/xml-go

xml

Package github.com/printesoi/xml-go implements a XML 1.0 marshaler that is a drop in encoding/xml replacement maintaining full interface compatibility to it but aims to producing C14N Exclusive XML Canonicalization compatible byte sequences. This includes sorting of all rendered element attributes as per the C14N-XML spec.

Example

A Struct defined in the normal way as known from encoding/xml

type Person struct {
	XMLName xml.Name `xml:"http://example.com/ns1 person"`
	Name    string   `xml:"name"`
	Phone   string   `xml:"http://example.com/ns2 phone,omitempty"`
}

is marshaled to

<ns1:person xmlns:ns1="http://example.com/ns1">
  <ns1:name>Foo</ns1:name>
  <ns2:phone xmlns:ns2="http://example.com/ns2">123</ns2:phone>
</ns1:person>

Example 2

Skip adding xmlns:prefix="url":

type Ambassador struct {
	XMLName xml.Name `xml:"example.com:ns1 ambassador"`
	Name    string   `xml:"name"`
	Origin  string   `xml:"example.com:ns2 origin,omitempty"`
}

var b bytes.Buffer
enc := NewEncoder(&b)

prefix1, url1 := "ns1", "example.com:ns1"
enc.AddNamespaceBinding(url1, prefix1)
enc.AddSkipNamespaceAttrForPrefix(url1, prefix1)

prefix2, url2 := "ns2", "example.com:ns2"
enc.AddNamespaceBinding(url2, prefix2)
enc.AddSkipNamespaceAttrForPrefix(url2, prefix2)

v := &Ambassador{
    Name: "Mahit Dzmare",
    Origin: "Lsel Station",
}

if err := enc.Encode(v); err != nil {
    // error
}
if err := enc.Close(); err != nil {
    // error
}

ambassadorXML := b.Bytes()

is marshaled to

<ns1:ambassador>
  <ns1:name>Mahit Dzmare</ns1:name>
  <ns2:origin>Lsel Station</ns2:origin>
</ns1:ambassador>