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libphutil/src/parser/PhutilJSONParser.php
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PhutilJSONParser.php
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<?php
/**
* A JSON parser.
*
* @phutil-external-symbol class JsonLintJsonParser
* @phutil-external-symbol class JsonLintParsingException
*/
final class PhutilJSONParser {
private $allowDuplicateKeys = false;
public function setAllowDuplicateKeys($allow_duplicate_keys) {
$this->allowDuplicateKeys = $allow_duplicate_keys;
return $this;
}
public function parse($json) {
$jsonlint_root = phutil_get_library_root('phutil').'/../externals/jsonlint';
require_once $jsonlint_root.'/src/Seld/JsonLint/JsonParser.php';
require_once $jsonlint_root.'/src/Seld/JsonLint/Lexer.php';
require_once $jsonlint_root.'/src/Seld/JsonLint/ParsingException.php';
require_once $jsonlint_root.'/src/Seld/JsonLint/Undefined.php';
$parser = new JsonLintJsonParser();
try {
$output = $parser->parse($json, $this->getFlags());
} catch (JsonLintParsingException $ex) {
$details = $ex->getDetails();
$message = preg_replace("/^Parse error .*\\^\n/s", '', $ex->getMessage());
throw new PhutilJSONParserException(
$message,
idx(idx($details, 'loc', array()), 'last_line'),
idx(idx($details, 'loc', array()), 'last_column'),
idx($details, 'token'),
idx($details, 'expected'));
}
if (!is_array($output)) {
throw new PhutilJSONParserException(
pht(
'%s is not a valid JSON object.',
PhutilReadableSerializer::printShort($json)));
}
return $output;
}
private function getFlags() {
$flags = JsonLintJsonParser::PARSE_TO_ASSOC;
if ($this->allowDuplicateKeys) {
$flags |= JsonLintJsonParser::ALLOW_DUPLICATE_KEYS;
} else {
$flags |= JsonLintJsonParser::DETECT_KEY_CONFLICTS;
}
return $flags;
}
}
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