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-rw-r--r--library/Director/Data/Json.php69
1 files changed, 69 insertions, 0 deletions
diff --git a/library/Director/Data/Json.php b/library/Director/Data/Json.php
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+++ b/library/Director/Data/Json.php
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+<?php
+
+namespace Icinga\Module\Director\Data;
+
+use Icinga\Module\Director\Exception\JsonEncodeException;
+use function json_decode;
+use function json_encode;
+use function json_last_error;
+
+class Json
+{
+ const DEFAULT_FLAGS = JSON_PRESERVE_ZERO_FRACTION | JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE;
+
+ /**
+ * Encode with well-known flags, as we require the result to be reproducible
+ *
+ * @param $mixed
+ * @param int|null $flags
+ * @return string
+ * @throws JsonEncodeException
+ */
+ public static function encode($mixed, $flags = null)
+ {
+ if ($flags === null) {
+ $flags = self::DEFAULT_FLAGS;
+ } else {
+ $flags = self::DEFAULT_FLAGS | $flags;
+ }
+ $result = json_encode($mixed, $flags);
+
+ if ($result === false && json_last_error() !== JSON_ERROR_NONE) {
+ throw JsonEncodeException::forLastJsonError();
+ }
+
+ return $result;
+ }
+
+ /**
+ * Decode the given JSON string and make sure we get a meaningful Exception
+ *
+ * @param string $string
+ * @return mixed
+ * @throws JsonEncodeException
+ */
+ public static function decode($string)
+ {
+ $result = json_decode($string);
+
+ if ($result === null && json_last_error() !== JSON_ERROR_NONE) {
+ throw JsonEncodeException::forLastJsonError();
+ }
+
+ return $result;
+ }
+
+ /**
+ * @param $string
+ * @return ?string
+ * @throws JsonEncodeException
+ */
+ public static function decodeOptional($string)
+ {
+ if ($string === null) {
+ return null;
+ }
+
+ return static::decode($string);
+ }
+}