golang.org/x/text@v0.14.0/message/pipeline/testdata/test1/test1.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  import "golang.org/x/text/message"
     8  
     9  func main() {
    10  	p := message.NewPrinter(message.MatchLanguage("en"))
    11  
    12  	// NOT EXTRACTED: strings passed to Println are not extracted.
    13  	p.Println("Hello world!")
    14  
    15  	// NOT EXTRACTED: strings passed to Print are not extracted.
    16  	p.Print("Hello world!\n")
    17  
    18  	// Extract and trim whitespace (TODO).
    19  	p.Printf("Hello world!\n")
    20  
    21  	// NOT EXTRACTED: city is not used as a pattern or passed to %m.
    22  	city := "Amsterdam"
    23  	// This comment is extracted.
    24  	p.Printf("Hello %s!\n", city)
    25  
    26  	person := "Sheila"
    27  	place := "Zürich"
    28  
    29  	// Substitutions replaced by variable names.
    30  	p.Printf("%s is visiting %s!\n",
    31  		person, // The person of matter.
    32  		place,  // Place the person is visiting.
    33  	)
    34  
    35  	pp := struct {
    36  		Person string // The person of matter. // TODO: get this comment.
    37  		Place  string
    38  		extra  int
    39  	}{
    40  		person, place, 4,
    41  	}
    42  
    43  	// extract will drop this comment in favor of the one below.
    44  	p.Printf("%[1]s is visiting %[3]s!\n", // Field names are placeholders.
    45  		pp.Person,
    46  		pp.extra,
    47  		pp.Place, // Place the person is visiting.
    48  	)
    49  
    50  	// Numeric literal becomes placeholder.
    51  	p.Printf("%d files remaining!", 2)
    52  
    53  	const n = 2
    54  
    55  	// Constant identifier becomes placeholder.
    56  	p.Printf("%d more files remaining!", n)
    57  
    58  	// Infer better names from type names.
    59  	type referralCode int
    60  
    61  	const c = referralCode(5)
    62  
    63  	// Use type name as placeholder.
    64  	p.Printf("Use the following code for your discount: %d\n", c)
    65  
    66  	// Use constant name as message ID.
    67  	const msgOutOfOrder = "%s is out of order!" // This comment wins.
    68  	const device = "Soda machine"
    69  	// This message has two IDs.
    70  	p.Printf(msgOutOfOrder, device)
    71  
    72  	// Multiple substitutions for same argument.
    73  	miles := 1.2345
    74  	p.Printf("%.2[1]f miles traveled (%[1]f)", miles)
    75  }