cuelang.org/go@v0.10.1/encoding/protobuf/examples_test.go (about)

     1  // Copyright 2019 CUE Authors
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package protobuf_test
    16  
    17  import (
    18  	"fmt"
    19  	"log"
    20  	"os"
    21  	"path/filepath"
    22  
    23  	"cuelang.org/go/cue/format"
    24  	"cuelang.org/go/encoding/protobuf"
    25  )
    26  
    27  func ExampleExtract() {
    28  	cwd, _ := os.Getwd()
    29  	var paths = []string{}
    30  	paths = append(paths, cwd)
    31  	paths = append(paths, filepath.Join(cwd, "testdata"))
    32  
    33  	f, err := protobuf.Extract("examples/basic/basic.proto", nil, &protobuf.Config{
    34  		Paths: paths,
    35  	})
    36  
    37  	if err != nil {
    38  		log.Fatal(err, "")
    39  	}
    40  
    41  	b, _ := format.Node(f)
    42  	fmt.Println(string(b))
    43  
    44  	// Output:
    45  	// // Package basic is just that: basic.
    46  	// package basic
    47  	//
    48  	// // This is my type.
    49  	// #MyType: {
    50  	// 	stringValue?: string @protobuf(1,string,name=string_value) // just any 'ole string
    51  	//
    52  	// 	// A method must start with a capital letter.
    53  	// 	method?: [...string] @protobuf(2,string)
    54  	// 	method?: [...=~"^[A-Z]"]
    55  	// 	exampleMap?: {
    56  	// 		[string]: string
    57  	// 	} @protobuf(3,map[string]string,example_map)
    58  	// }
    59  }