/// <exception cref="JsonLdError"></exception>
public static async Task <JObject> CompactAsync(JToken input,
JToken context,
JsonLdOptions opts)
{
// 1)
// TODO: look into java futures/promises
// 2-6) NOTE: these are all the same steps as in expand
JToken expanded = await ExpandAsync(input, opts);
// 7)
if (context is JObject jObj && jObj.ContainsKey("@context"))
{
context = jObj["@context"];
}
var activeCtx = await Context.ParseAsync(context, opts);
// 8)
var compacted = new JsonLdApi(opts).Compact(activeCtx,
null,
expanded,
opts.GetCompactArrays
());
// final step of Compaction Algorithm
// TODO: SPEC: the result result is a NON EMPTY array,
if (compacted is JArray jArray)
{
compacted = jArray.IsEmpty() ? new JObject() : new JObject {
[activeCtx.CompactIri("@graph", true)] = compacted
}
}
;
if (!compacted.IsNull() && !context.IsNull())
{
if (context is JObject && !((JObject)context).IsEmpty() ||
context is JArray && !((JArray)context).IsEmpty())
{
compacted["@context"] = context;
}
}
// 9)
return((JObject)compacted);
}
/// <exception cref="JsonLD.Core.JsonLdError"></exception>
public static JArray Expand(JToken input, JsonLdOptions opts)
{
// 1)
// TODO: look into java futures/promises
// 2) verification of DOMString IRI
bool isIriString = input.Type == JTokenType.String;
if (isIriString)
{
bool hasColon = false;
foreach (var c in ((string)input))
{
if (c == ':')
{
hasColon = true;
}
if (!hasColon && (c == '{' || c == '['))
{
isIriString = false;
break;
}
}
}
if (isIriString)
{
try
{
RemoteDocument tmp = opts.documentLoader.LoadDocument((string)input);
input = tmp.document;
}
catch (Exception e)
{
// TODO: figure out how to deal with remote context
throw new JsonLdError(JsonLdError.Error.LoadingDocumentFailed, e.Message);
}
// if set the base in options should override the base iri in the
// active context
// thus only set this as the base iri if it's not already set in
// options
if (opts.GetBase() == null)
{
opts.SetBase((string)input);
}
}
// 3)
Context activeCtx = new Context(opts);
// 4)
if (opts.GetExpandContext() != null)
{
JObject exCtx = opts.GetExpandContext();
if (exCtx is JObject && ((IDictionary <string, JToken>)exCtx).ContainsKey("@context"
))
{
exCtx = (JObject)((IDictionary <string, JToken>)exCtx)["@context"];
}
activeCtx = activeCtx.Parse(exCtx);
}
// 5)
// TODO: add support for getting a context from HTTP when content-type
// is set to a jsonld compatable format
// 6)
JToken expanded = new JsonLdApi(opts).Expand(activeCtx, input);
// final step of Expansion Algorithm
if (expanded is JObject && ((IDictionary <string, JToken>)expanded).ContainsKey("@graph") && (
(IDictionary <string, JToken>)expanded).Count == 1)
{
expanded = ((JObject)expanded)["@graph"];
}
else
{
if (expanded.IsNull())
{
expanded = new JArray();
}
}
// normalize to an array
if (!(expanded is JArray))
{
JArray tmp = new JArray();
tmp.Add(expanded);
expanded = tmp;
}
return((JArray)expanded);
}