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// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package xml_test
import (
"encoding/xml"
"fmt"
"os"
)
func ExampleMarshalIndent() {
type Address struct {
City, State string
}
type Person struct {
XMLName xml.Name `xml:"person"`
Id int `xml:"id,attr"`
FirstName string `xml:"name>first"`
LastName string `xml:"name>last"`
Age int `xml:"age"`
Height float32 `xml:"height,omitempty"`
Married bool
Address
Comment string `xml:",comment"`
}
v := &Person{Id: 13, FirstName: "John", LastName: "Doe", Age: 42}
v.Comment = " Need more details. "
v.Address = Address{"Hanga Roa", "Easter Island"}
output, err := xml.MarshalIndent(v, " ", " ")
if err != nil {
fmt.Printf("error: %v\n", err)
}
os.Stdout.Write(output)
// Output:
// <person id="13">
// <name>
// <first>John</first>
// <last>Doe</last>
// </name>
// <age>42</age>
// <Married>false</Married>
// <City>Hanga Roa</City>
// <State>Easter Island</State>
// <!-- Need more details. -->
// </person>
}
func ExampleEncoder() {
type Address struct {
City, State string
}
type Person struct {
XMLName xml.Name `xml:"person"`
Id int `xml:"id,attr"`
FirstName string `xml:"name>first"`
LastName string `xml:"name>last"`
Age int `xml:"age"`
Height float32 `xml:"height,omitempty"`
Married bool
Address
Comment string `xml:",comment"`
}
v := &Person{Id: 13, FirstName: "John", LastName: "Doe", Age: 42}
v.Comment = " Need more details. "
v.Address = Address{"Hanga Roa", "Easter Island"}
enc := xml.NewEncoder(os.Stdout)
enc.Indent(" ", " ")
if err := enc.Encode(v); err != nil {
fmt.Printf("error: %v\n", err)
}
// Output:
// <person id="13">
// <name>
// <first>John</first>
// <last>Doe</last>
// </name>
// <age>42</age>
// <Married>false</Married>
// <City>Hanga Roa</City>
// <State>Easter Island</State>
// <!-- Need more details. -->
// </person>
}
// This example demonstrates unmarshaling an XML excerpt into a value with
// some preset fields. Note that the Phone field isn't modified and that
// the XML <Company> element is ignored. Also, the Groups field is assigned
// considering the element path provided in its tag.
func ExampleUnmarshal() {
type Email struct {
Where string `xml:"where,attr"`
Addr string
}
type Address struct {
City, State string
}
type Result struct {
XMLName xml.Name `xml:"Person"`
Name string `xml:"FullName"`
Phone string
Email []Email
Groups []string `xml:"Group>Value"`
Address
}
v := Result{Name: "none", Phone: "none"}
data := `
<Person>
<FullName>Grace R. Emlin</FullName>
<Company>Example Inc.</Company>
<Email where="home">
<Addr>gre@example.com</Addr>
</Email>
<Email where='work'>
<Addr>gre@work.com</Addr>
</Email>
<Group>
<Value>Friends</Value>
<Value>Squash</Value>
</Group>
<City>Hanga Roa</City>
<State>Easter Island</State>
</Person>
`
err := xml.Unmarshal([]byte(data), &v)
if err != nil {
fmt.Printf("error: %v", err)
return
}
fmt.Printf("XMLName: %#v\n", v.XMLName)
fmt.Printf("Name: %q\n", v.Name)
fmt.Printf("Phone: %q\n", v.Phone)
fmt.Printf("Email: %v\n", v.Email)
fmt.Printf("Groups: %v\n", v.Groups)
fmt.Printf("Address: %v\n", v.Address)
// Output:
// XMLName: xml.Name{Space:"", Local:"Person"}
// Name: "Grace R. Emlin"
// Phone: "none"
// Email: [{home gre@example.com} {work gre@work.com}]
// Groups: [Friends Squash]
// Address: {Hanga Roa Easter Island}
}