public static Uri TryParseUrl(TraceContext trace, Uri documentRoot, JToken token)
{
Guard.NotNull(trace, "trace");
using (trace.EnterExit())
{
if (token.Type == JTokenType.String)
{
string val = token.Value<string>();
if (!String.IsNullOrEmpty(val))
{
Uri url;
if (Uri.TryCreate(val, UriKind.RelativeOrAbsolute, out url))
{
// Resolve the url if possible
if (documentRoot != null && !url.IsAbsoluteUri)
{
url = new Uri(documentRoot, url);
}
return url;
}
}
}
return null;
}
}
public static IEnumerable<Uri> ParseUrlArray(IEnumerable<JToken> array, TraceContext trace, Uri documentRoot, string invalidUrlErrorFormat)
{
Guard.NotNull(trace, "trace");
using (trace.EnterExit())
{
return array == null ?
Enumerable.Empty<Uri>() :
array.Select(token => {
var url = TryParseUrl(trace, documentRoot, token);
if (url == null)
{
trace.JsonParseWarning(token, String.Format(CultureInfo.CurrentCulture, invalidUrlErrorFormat, token.ToDisplayString()));
}
return url;
})
.Where(url => url != null);
}
}
public static IEnumerable<KeyValuePair<string, Uri>> ParseUrlDictionary(JObject obj, TraceContext trace, Uri documentRoot, string invalidUrlErrorFormat)
{
Guard.NotNull(trace, "trace");
using (trace.EnterExit())
{
return obj == null ?
Enumerable.Empty<KeyValuePair<string, Uri>>() :
obj
.Properties()
.Select(prop =>
{
var url = TryParseUrl(trace, documentRoot, prop.Value);
if (url == null)
{
trace.JsonParseWarning(prop.Value, String.Format(CultureInfo.CurrentCulture, invalidUrlErrorFormat, prop.Value.ToDisplayString(), prop.Name));
}
return new KeyValuePair<string, Uri>(prop.Name, url);
})
.Where(pair => pair.Value != null);
}
}