Go by Example: XML

Go `encoding/xml` paketi orqali XML va XML ga o’xshash formatlar uchun o’rnatilgan qo’llab-quvvatlashni taklif qiladi.
	`package main`
	`import ( "encoding/xml" "fmt" )`
Plant XML ga moslashtiriladi. JSON misollariga o’xshab, maydon teglari enkoder va dekoder uchun ko’rsatmalarni o’z ichiga oladi. Bu yerda XML paketining ba’zi maxsus xususiyatlaridan foydalanamiz: `XMLName` maydon nomi bu struct ni ifodalovchi XML elementining nomini belgilaydi; `id,attr` esa `Id` maydoni ichki element emas, balki XML atributi ekanligini bildiradi.	type Plant struct { XMLName xml.Name `xml:"plant"` Id int `xml:"id,attr"` Name string `xml:"name"` Origin []string `xml:"origin"` }
	`func (p Plant) String() string { return fmt.Sprintf("Plant id=%v, name=%v, origin=%v", p.Id, p.Name, p.Origin) }`
	`func main() { coffee := &Plant{Id: 27, Name: "Coffee"} coffee.Origin = []string{"Ethiopia", "Brazil"}`
O’simligimizni ifodalovchi XML ni chiqaramiz; inson uchun o’qish osonroq bo’lgan natija hosil qilish uchun `MarshalIndent` dan foydalanamiz.	`out, _ := xml.MarshalIndent(coffee, " ", " ") fmt.Println(string(out))`
Natijaga umumiy XML sarlavhasini qo’shish uchun uni aniq tarzda qo’shing.	`fmt.Println(xml.Header + string(out))`
XML li baytlar oqimini ma’lumotlar tuzilmasiga tahlil qilish uchun `Unmarshal` dan foydalaning. Agar XML noto’g’ri shakllangan bo’lsa yoki Plant ga moslashtirib bo’lmasa, tavsiflovchi xato qaytariladi.	`var p Plant if err := xml.Unmarshal(out, &p); err != nil { panic(err) } fmt.Println(p)`
	`tomato := &Plant{Id: 81, Name: "Tomato"} tomato.Origin = []string{"Mexico", "California"}`
`parent>child>plant` maydon tegi enkoderga barcha `plant` larni `<parent><child>...` ostida joylashtirishni aytadi	type Nesting struct { XMLName xml.Name `xml:"nesting"` Plants []*Plant `xml:"parent>child>plant"` }
	`nesting := &Nesting{} nesting.Plants = []*Plant{coffee, tomato}`
	`out, _ = xml.MarshalIndent(nesting, " ", " ") fmt.Println(string(out)) }`

$ go run xml.go
 <plant id="27">
   <name>Coffee</name>
   <origin>Ethiopia</origin>
   <origin>Brazil</origin>
 </plant>
<?xml version="1.0" encoding="UTF-8"?>
 <plant id="27">
   <name>Coffee</name>
   <origin>Ethiopia</origin>
   <origin>Brazil</origin>
 </plant>
Plant id=27, name=Coffee, origin=[Ethiopia Brazil]
 <nesting>
   <parent>
     <child>
       <plant id="27">
         <name>Coffee</name>
         <origin>Ethiopia</origin>
         <origin>Brazil</origin>
       </plant>
       <plant id="81">
         <name>Tomato</name>
         <origin>Mexico</origin>
         <origin>California</origin>
       </plant>
     </child>
   </parent>
 </nesting>

Keyingi misol: Time.