jsonLdParser function
Implementation
Data? jsonLdParser(
Parser parser,
Data parentData,
bool debug,
) {
printLog("----------------------------------", debug, color: LogColor.yellow);
printLog("ID: ${parser.id} Parser: JSON+LD", debug, color: LogColor.cyan);
List<Element>? element = getElementObject(parentData);
if (element == null || element.isEmpty) {
printLog(
"JSON+LD Parser: Element not found!",
debug,
color: LogColor.red,
);
return null;
}
Element document;
if (element.length == 1) {
document = element[0];
} else {
throw UnimplementedError("Multiple elements not supported");
}
List results = [];
List<Element> selector =
document.querySelectorAll('script[type="application/ld+json"]');
if (selector.isNotEmpty) {
for (final s in selector) {
String innerHtml = s.innerHtml.replaceAll("\n", "");
innerHtml = innerHtml.replaceAll("\t", "");
Object json = jsonDecode(innerHtml);
if (json is Map) {
if (json["@graph"] != null) {
results.addAll(json["@graph"]);
} else {
results.add(json);
}
} else if (json is Iterable) {
results.addAll(json);
}
}
return Data(parentData.url, results);
}
printLog(
"JSON+LD Parser: No data found!",
debug,
color: LogColor.orange,
);
return null;
}