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package main
import (
"fmt"
"io/ioutil"
"os"
"path/filepath"
"github.com/xeipuuv/gojsonschema"
)
func main() {
nargs := len(os.Args[1:])
if nargs == 0 || nargs > 2 {
fmt.Printf("ERROR: usage is: %s <schema.json> [<document.json>]\n", os.Args[0])
os.Exit(1)
}
schemaPath, err := filepath.Abs(os.Args[1])
if err != nil {
fmt.Println(err)
os.Exit(1)
}
schemaLoader := gojsonschema.NewReferenceLoader("file://" + schemaPath)
var documentLoader gojsonschema.JSONLoader
if nargs > 1 {
documentPath, err := filepath.Abs(os.Args[2])
if err != nil {
fmt.Println(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 {
panic(err.Error())
}
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)
}
}
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