golang.org/x/text@v0.14.0/cmd/gotext/examples/extract/main.go (about)

     1  // Copyright 2017 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package main
     6  
     7  //go:generate gotext update -out catalog.go
     8  
     9  import (
    10  	"golang.org/x/text/language"
    11  	"golang.org/x/text/message"
    12  )
    13  
    14  func main() {
    15  	p := message.NewPrinter(language.English)
    16  
    17  	p.Print("Hello world!\n")
    18  
    19  	p.Println("Hello", "world!")
    20  
    21  	person := "Sheila"
    22  	place := "Zürich"
    23  
    24  	p.Print("Hello ", person, " in ", place, "!\n")
    25  
    26  	// Greet everyone.
    27  	p.Printf("Hello world!\n")
    28  
    29  	city := "Amsterdam"
    30  	// Greet a city.
    31  	p.Printf("Hello %s!\n", city)
    32  
    33  	town := "Amsterdam"
    34  	// Greet a town.
    35  	p.Printf("Hello %s!\n",
    36  		town, // Town
    37  	)
    38  
    39  	// Person visiting a place.
    40  	p.Printf("%s is visiting %s!\n",
    41  		person, // The person of matter.
    42  		place,  // Place the person is visiting.
    43  	)
    44  
    45  	pp := struct {
    46  		Person string // The person of matter. // TODO: get this comment.
    47  		Place  string
    48  		extra  int
    49  	}{
    50  		person, place, 4,
    51  	}
    52  
    53  	// extract will drop this comment in favor of the one below.
    54  	// argument is added as a placeholder.
    55  	p.Printf("%[1]s is visiting %[3]s!\n", // Person visiting a place.
    56  		pp.Person,
    57  		pp.extra,
    58  		pp.Place, // Place the person is visiting.
    59  	)
    60  
    61  	// Numeric literal
    62  	p.Printf("%d files remaining!", 2)
    63  
    64  	const n = 2
    65  
    66  	// Numeric var
    67  	p.Printf("%d more files remaining!", n)
    68  
    69  	// Infer better names from type names.
    70  	type referralCode int
    71  
    72  	const c = referralCode(5)
    73  	p.Printf("Use the following code for your discount: %d\n", c)
    74  
    75  	// Using a constant for a message will cause the constant name to be
    76  	// added as an identifier, allowing for stable message identifiers.
    77  
    78  	// Explain that a device is out of order.
    79  	const msgOutOfOrder = "%s is out of order!" // FOO
    80  	const device = "Soda machine"
    81  	p.Printf(msgOutOfOrder, device)
    82  
    83  	// Double arguments.
    84  	miles := 1.2345
    85  	p.Printf("%.2[1]f miles traveled (%[1]f)", miles)
    86  }