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// code examples for godoc
package toml_test
import (
"fmt"
"log"
"os"
toml "github.com/pelletier/go-toml"
)
func Example_tree() {
config, err := toml.LoadFile("config.toml")
if err != nil {
fmt.Println("Error ", err.Error())
} else {
// retrieve data directly
directUser := config.Get("postgres.user").(string)
directPassword := config.Get("postgres.password").(string)
fmt.Println("User is", directUser, " and password is", directPassword)
// or using an intermediate object
configTree := config.Get("postgres").(*toml.Tree)
user := configTree.Get("user").(string)
password := configTree.Get("password").(string)
fmt.Println("User is", user, " and password is", password)
// show where elements are in the file
fmt.Printf("User position: %v\n", configTree.GetPosition("user"))
fmt.Printf("Password position: %v\n", configTree.GetPosition("password"))
}
}
func Example_unmarshal() {
type Employer struct {
Name string
Phone string
}
type Person struct {
Name string
Age int64
Employer Employer
}
document := []byte(`
name = "John"
age = 30
[employer]
name = "Company Inc."
phone = "+1 234 567 89012"
`)
person := Person{}
toml.Unmarshal(document, &person)
fmt.Println(person.Name, "is", person.Age, "and works at", person.Employer.Name)
// Output:
// John is 30 and works at Company Inc.
}
func ExampleMarshal() {
type Postgres struct {
User string `toml:"user"`
Password string `toml:"password"`
Database string `toml:"db" commented:"true" comment:"not used anymore"`
}
type Config struct {
Postgres Postgres `toml:"postgres" comment:"Postgres configuration"`
}
config := Config{Postgres{User: "pelletier", Password: "mypassword", Database: "old_database"}}
b, err := toml.Marshal(config)
if err != nil {
log.Fatal(err)
}
fmt.Println(string(b))
// Output:
// # Postgres configuration
// [postgres]
//
// # not used anymore
// # db = "old_database"
// password = "mypassword"
// user = "pelletier"
}
func ExampleUnmarshal() {
type Postgres struct {
User string
Password string
}
type Config struct {
Postgres Postgres
}
doc := []byte(`
[postgres]
user = "pelletier"
password = "mypassword"`)
config := Config{}
toml.Unmarshal(doc, &config)
fmt.Println("user=", config.Postgres.User)
// Output:
// user= pelletier
}
func ExampleEncoder_anonymous() {
type Credentials struct {
User string `toml:"user"`
Password string `toml:"password"`
}
type Protocol struct {
Name string `toml:"name"`
}
type Config struct {
Version int `toml:"version"`
Credentials
Protocol `toml:"Protocol"`
}
config := Config{
Version: 2,
Credentials: Credentials{
User: "pelletier",
Password: "mypassword",
},
Protocol: Protocol{
Name: "tcp",
},
}
fmt.Println("Default:")
fmt.Println("---------------")
def := toml.NewEncoder(os.Stdout)
if err := def.Encode(config); err != nil {
log.Fatal(err)
}
fmt.Println("---------------")
fmt.Println("With promotion:")
fmt.Println("---------------")
prom := toml.NewEncoder(os.Stdout).PromoteAnonymous(true)
if err := prom.Encode(config); err != nil {
log.Fatal(err)
}
// Output:
// Default:
// ---------------
// password = "mypassword"
// user = "pelletier"
// version = 2
//
// [Protocol]
// name = "tcp"
// ---------------
// With promotion:
// ---------------
// version = 2
//
// [Credentials]
// password = "mypassword"
// user = "pelletier"
//
// [Protocol]
// name = "tcp"
}
|
