json2go: cmd/json2go/main.go (e64121e986feae9f6224469c4d0ae8993ed7f22b)

1

package main

2

3

import (

4

	"flag"

5

	"fmt"

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	"io"

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	"os"

8

9

	"olexsmir.xyz/json2go"

10

11

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func main() {

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	typeName := flag.String("type", "AutoGenerated", "a name for generated type")

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	noTags := flag.Bool("no-json-tags", false, "do not include json tags on struct fields")

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	showHelp := flag.Bool("help", false, "show help")

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	flag.Parse()

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	if *showHelp {

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		printHelp()

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		os.Exit(0)

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22

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	// get input

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	args := flag.Args()

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	stat, err := os.Stdin.Stat()

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	if err != nil {

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		fmt.Fprintf(os.Stderr, "Failed to get stdin stat: %v\n", err)

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		os.Exit(1)

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31

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	isPiped := (stat.Mode() & os.ModeCharDevice) == 0

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	var input string

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	switch {

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	case len(args) > 0:

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		input = args[0]

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	case isPiped:

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		data, rerr := io.ReadAll(os.Stdin)

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		if rerr != nil {

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			fmt.Fprintf(os.Stderr, "Failed to read piped input: %v\n", rerr)

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			os.Exit(1)

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		input = string(data)

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	default:

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		printHelp()

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		os.Exit(1)

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49

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	type_, err := json2go.Transform(*typeName, input, !*noTags)

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	if err != nil {

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		fmt.Fprintf(os.Stderr, "Failed to transform json to type annotation: %v\n", err)

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		os.Exit(1)

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	fmt.Println(type_)

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func printHelp() {

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	fmt.Println(`

61

Convert json to Go type annotations.

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63

Usage:

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	echo '{"json": "here"}' | json2go

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	echo '{"json": "here"}' | json2go -type=MyTypeName

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	json2go -type=MyTypeName '{"json": "here"}'

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	json2go -no-json-tags '{"json": "here"}'

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69

Flags:

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	-type=NAME         Type name for root type (default: AutoGenerated)

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	-no-json-tags      Omit json struct tags`[1:])

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1	package main
2
3	import (
4	"flag"
5	"fmt"
6	"io"
7	"os"
8
9	"olexsmir.xyz/json2go"
10	)
11
12	func main() {
13	typeName := flag.String("type", "AutoGenerated", "a name for generated type")
14	noTags := flag.Bool("no-json-tags", false, "do not include json tags on struct fields")
15	showHelp := flag.Bool("help", false, "show help")
16	flag.Parse()
17
18	if *showHelp {
19	printHelp()
20	os.Exit(0)
21	}
22
23	// get input
24	args := flag.Args()
25
26	stat, err := os.Stdin.Stat()
27	if err != nil {
28	fmt.Fprintf(os.Stderr, "Failed to get stdin stat: %v\n", err)
29	os.Exit(1)
30	}
31
32	isPiped := (stat.Mode() & os.ModeCharDevice) == 0
33
34	var input string
35	switch {
36	case len(args) > 0:
37	input = args[0]
38	case isPiped:
39	data, rerr := io.ReadAll(os.Stdin)
40	if rerr != nil {
41	fmt.Fprintf(os.Stderr, "Failed to read piped input: %v\n", rerr)
42	os.Exit(1)
43	}
44	input = string(data)
45	default:
46	printHelp()
47	os.Exit(1)
48	}
49
50	type_, err := json2go.Transform(typeName, input, !noTags)
51	if err != nil {
52	fmt.Fprintf(os.Stderr, "Failed to transform json to type annotation: %v\n", err)
53	os.Exit(1)
54	}
55
56	fmt.Println(type_)
57	}
58
59	func printHelp() {
60	fmt.Println(`
61	Convert json to Go type annotations.
62
63	Usage:
64	echo '{"json": "here"}' \| json2go
65	echo '{"json": "here"}' \| json2go -type=MyTypeName
66	json2go -type=MyTypeName '{"json": "here"}'
67	json2go -no-json-tags '{"json": "here"}'
68
69	Flags:
70	-type=NAME Type name for root type (default: AutoGenerated)
71	-no-json-tags Omit json struct tags`[1:])
72	}