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#!/usr/bin/env php
<?php
/**
* JSON schema validator
*
* @author Christian Weiske <christian.weiske@netresearch.de>
*/
/**
* Dead simple autoloader
*
* @param string $className Name of class to load
*
* @return void
*/
spl_autoload_register(function ($className)
{
$className = ltrim($className, '\\');
$fileName = '';
if ($lastNsPos = strrpos($className, '\\')) {
$namespace = substr($className, 0, $lastNsPos);
$className = substr($className, $lastNsPos + 1);
$fileName = str_replace('\\', DIRECTORY_SEPARATOR, $namespace) . DIRECTORY_SEPARATOR;
}
$fileName .= str_replace('_', DIRECTORY_SEPARATOR, $className) . '.php';
if (stream_resolve_include_path($fileName)) {
require_once $fileName;
}
});
// support running this tool from git checkout
if (is_dir(__DIR__ . '/../src/JsonSchema')) {
set_include_path(__DIR__ . '/../src' . PATH_SEPARATOR . get_include_path());
}
$arOptions = array();
$arArgs = array();
array_shift($argv);//script itself
foreach ($argv as $arg) {
if ($arg[0] == '-') {
$arOptions[$arg] = true;
} else {
$arArgs[] = $arg;
}
}
if (count($arArgs) == 0
|| isset($arOptions['--help']) || isset($arOptions['-h'])
) {
echo <<<HLP
Validate schema
Usage: validate-json data.json
or: validate-json data.json schema.json
Options:
--dump-schema Output full schema and exit
--dump-schema-url Output URL of schema
--verbose Show additional output
--quiet Suppress all output
-h --help Show this help
HLP;
exit(1);
}
if (count($arArgs) == 1) {
$pathData = $arArgs[0];
$pathSchema = null;
} else {
$pathData = $arArgs[0];
$pathSchema = getUrlFromPath($arArgs[1]);
}
/**
* Show the json parse error that happened last
*
* @return void
*/
function showJsonError()
{
$constants = get_defined_constants(true);
$json_errors = array();
foreach ($constants['json'] as $name => $value) {
if (!strncmp($name, 'JSON_ERROR_', 11)) {
$json_errors[$value] = $name;
}
}
output('JSON parse error: ' . $json_errors[json_last_error()] . "\n");
}
function getUrlFromPath($path)
{
if (parse_url($path, PHP_URL_SCHEME) !== null) {
//already an URL
return $path;
}
if ($path[0] == '/') {
//absolute path
return 'file://' . $path;
}
//relative path: make absolute
return 'file://' . getcwd() . '/' . $path;
}
/**
* Take a HTTP header value and split it up into parts.
*
* @param $headerValue
* @return array Key "_value" contains the main value, all others
* as given in the header value
*/
function parseHeaderValue($headerValue)
{
if (strpos($headerValue, ';') === false) {
return array('_value' => $headerValue);
}
$parts = explode(';', $headerValue);
$arData = array('_value' => array_shift($parts));
foreach ($parts as $part) {
list($name, $value) = explode('=', $part);
$arData[$name] = trim($value, ' "\'');
}
return $arData;
}
/**
* Send a string to the output stream, but only if --quiet is not enabled
*
* @param $str string A string output
*/
function output($str) {
global $arOptions;
if (!isset($arOptions['--quiet'])) {
echo $str;
}
}
$urlData = getUrlFromPath($pathData);
$context = stream_context_create(
array(
'http' => array(
'header' => array(
'Accept: */*',
'Connection: Close'
),
'max_redirects' => 5
)
)
);
$dataString = file_get_contents($pathData, false, $context);
if ($dataString == '') {
output("Data file is not readable or empty.\n");
exit(3);
}
$data = json_decode($dataString);
unset($dataString);
if ($data === null) {
output("Error loading JSON data file\n");
showJsonError();
exit(5);
}
if ($pathSchema === null) {
if (isset($http_response_header)) {
array_shift($http_response_header);//HTTP/1.0 line
foreach ($http_response_header as $headerLine) {
list($hName, $hValue) = explode(':', $headerLine, 2);
$hName = strtolower($hName);
if ($hName == 'link') {
//Link: <http://example.org/schema#>; rel="describedBy"
$hParts = parseHeaderValue($hValue);
if (isset($hParts['rel']) && $hParts['rel'] == 'describedBy') {
$pathSchema = trim($hParts['_value'], ' <>');
}
} else if ($hName == 'content-type') {
//Content-Type: application/my-media-type+json;
// profile=http://example.org/schema#
$hParts = parseHeaderValue($hValue);
if (isset($hParts['profile'])) {
$pathSchema = $hParts['profile'];
}
}
}
}
if (is_object($data) && property_exists($data, '$schema')) {
$pathSchema = $data->{'$schema'};
}
//autodetect schema
if ($pathSchema === null) {
output("JSON data must be an object and have a \$schema property.\n");
output("You can pass the schema file on the command line as well.\n");
output("Schema autodetection failed.\n");
exit(6);
}
}
if ($pathSchema[0] == '/') {
$pathSchema = 'file://' . $pathSchema;
}
$resolver = new JsonSchema\Uri\UriResolver();
$retriever = new JsonSchema\Uri\UriRetriever();
try {
$urlSchema = $resolver->resolve($pathSchema, $urlData);
if (isset($arOptions['--dump-schema-url'])) {
echo $urlSchema . "\n";
exit();
}
} catch (Exception $e) {
output("Error loading JSON schema file\n");
output($urlSchema . "\n");
output($e->getMessage() . "\n");
exit(2);
}
$refResolver = new JsonSchema\SchemaStorage($retriever, $resolver);
$schema = $refResolver->resolveRef($urlSchema);
if (isset($arOptions['--dump-schema'])) {
$options = defined('JSON_PRETTY_PRINT') ? JSON_PRETTY_PRINT : 0;
echo json_encode($schema, $options) . "\n";
exit();
}
try {
$validator = new JsonSchema\Validator();
$validator->check($data, $schema);
if ($validator->isValid()) {
if(isset($arOptions['--verbose'])) {
output("OK. The supplied JSON validates against the schema.\n");
}
} else {
output("JSON does not validate. Violations:\n");
foreach ($validator->getErrors() as $error) {
output(sprintf("[%s] %s\n", $error['property'], $error['message']));
}
exit(23);
}
} catch (Exception $e) {
output("JSON does not validate. Error:\n");
output($e->getMessage() . "\n");
output("Error code: " . $e->getCode() . "\n");
exit(24);
}