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Index: src/utils/__tests__/PhutilUtilsTestCase.php
===================================================================
--- src/utils/__tests__/PhutilUtilsTestCase.php
+++ src/utils/__tests__/PhutilUtilsTestCase.php
@@ -504,4 +504,26 @@
}
}
+ public function testPhutilJSONDecode() {
+ $default = (object)array();
+
+ $cases = array(
+ '{}' => array(),
+ '[]' => array(),
+ '' => $default,
+ '"a"' => $default,
+ '{,}' => $default,
+ 'null' => $default,
+ '"null"' => $default,
+ '[1, 2]' => array(1, 2),
+ '{"a":"b"}' => array('a' => 'b'),
+ );
+
+ foreach ($cases as $input => $expect) {
+ $result = phutil_json_decode($input, $default);
+ $this->assertEqual($expect, $result, 'phutil_json_decode('.$input.')');
+ }
+ }
+
+
}
Index: src/utils/utils.php
===================================================================
--- src/utils/utils.php
+++ src/utils/utils.php
@@ -1056,3 +1056,23 @@
return $quantity * $factor;
}
+
+
+/**
+ * Decode a JSON dictionary, or return a default value if the input does not
+ * decode or does not decode into a dictionary.
+ *
+ * @param string A string which ostensibly contains a JSON-encoded list or
+ * dictionary.
+ * @param default? Optional default value to return if the string does not
+ * decode, or does not decode into a list or dictionary.
+ * @return mixed Decoded list/dictionary, or default value if string
+ * failed to decode.
+ */
+function phutil_json_decode($string, $default = array()) {
+ $result = @json_decode($string, true);
+ if (!is_array($result)) {
+ return $default;
+ }
+ return $result;
+}

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