1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
|
package main
import (
"fmt"
"io/ioutil"
"os"
"path/filepath"
"strings"
"github.com/xeipuuv/gojsonschema"
)
const usage = `Validate is used to check document with specified schema.
You can use validate in following ways:
1.specify document file as an argument
validate <schema.json> <document.json>
2.pass document content through a pipe
cat <document.json> | validate <schema.json>
3.input document content manually, ended with ctrl+d(or your self-defined EOF keys)
validate <schema.json>
[INPUT DOCUMENT CONTENT HERE]
`
func main() {
nargs := len(os.Args[1:])
if nargs == 0 || nargs > 2 {
fmt.Printf("ERROR: invalid arguments number\n\n%s\n", usage)
os.Exit(1)
}
if os.Args[1] == "help" ||
os.Args[1] == "--help" ||
os.Args[1] == "-h" {
fmt.Printf("%s\n", usage)
os.Exit(1)
}
schemaPath := os.Args[1]
if !strings.Contains(schemaPath, "://") {
var err error
schemaPath, err = formatFilePath(schemaPath)
if err != nil {
fmt.Printf("ERROR: invalid schema-file path: %s\n", err)
os.Exit(1)
}
schemaPath = "file://" + schemaPath
}
schemaLoader := gojsonschema.NewReferenceLoader(schemaPath)
var documentLoader gojsonschema.JSONLoader
if nargs > 1 {
documentPath, err := formatFilePath(os.Args[2])
if err != nil {
fmt.Printf("ERROR: invalid document-file path: %s\n", err)
os.Exit(1)
}
documentLoader = gojsonschema.NewReferenceLoader("file://" + documentPath)
} else {
documentBytes, err := ioutil.ReadAll(os.Stdin)
if err != nil {
fmt.Println(err)
os.Exit(1)
}
documentString := string(documentBytes)
documentLoader = gojsonschema.NewStringLoader(documentString)
}
result, err := gojsonschema.Validate(schemaLoader, documentLoader)
if err != nil {
fmt.Println(err)
os.Exit(1)
}
if result.Valid() {
fmt.Printf("The document is valid\n")
} else {
fmt.Printf("The document is not valid. see errors :\n")
for _, desc := range result.Errors() {
fmt.Printf("- %s\n", desc)
}
os.Exit(1)
}
}
func formatFilePath(path string) (string, error) {
if _, err := os.Stat(path); err != nil {
return "", err
}
absPath, err := filepath.Abs(path)
if err != nil {
return "", err
}
return absPath, nil
}
|
