private static async Task <WikiLink> ParseInternalAsync(WikiSite site, IWikiFamily family, string text, int defaultNamespaceId, bool exceptionOnFailure)
{
if (site == null)
{
throw new ArgumentNullException(nameof(site));
}
if (text == null)
{
throw new ArgumentNullException(nameof(text));
}
var link = new WikiLink(site, text);
//preprocess text (these changes aren't site-dependent)
//First remove anchor, which is stored unchanged, if there is one
var parts = text.Split(new[] { '|' }, 2);
var title = parts[0];
link.Anchor = parts.Length > 1 ? parts[1] : null;
//This code was adapted from Title.php : secureAndSplit()
if (title.IndexOf('\ufffd') >= 0)
{
if (exceptionOnFailure)
{
throw new ArgumentException("Title contains illegal char (\\uFFFD 'REPLACEMENT CHARACTER')",
nameof(text));
}
return(null);
}
parts = title.Split(new[] { '#' }, 2);
title = parts[0];
link.Section = parts.Length > 1 ? parts[1] : null;
var match = IllegalTitlesPattern.Match(title);
if (match.Success)
{
if (exceptionOnFailure)
{
throw new ArgumentException($"Title contains illegal char sequence: {match.Value} .");
}
return(null);
}
//Parse title parts.
var parsedTitle = await TitlePartitionAsync(site, family, title, defaultNamespaceId);
link.InterwikiPrefix = parsedTitle.Item1;
link.NamespaceName = parsedTitle.Item2;
link.Title = parsedTitle.Item3;
link.FullTitle = link.Title;
if (link.InterwikiPrefix == null)
{
link.TargetSite = link.Site;
}
else if (family != null)
{
link.TargetSite = await family.GetSiteAsync(link.InterwikiPrefix);
Debug.Assert(link.TargetSite != null);
}
else
{
// If we do not have wiki family information, and there IS an interwiki prefix,
// subsequent namespace will not be parsed and will be left as a part of Name
Debug.Assert(parsedTitle.Item2 == null);
}
link.Namespace = parsedTitle.Item2 == null ? null : link.TargetSite.Namespaces[parsedTitle.Item2];
//Format expression.
var sb = new StringBuilder();
if (link.InterwikiPrefix != null)
{
sb.Append(link.InterwikiPrefix);
sb.Append(':');
}
if (!string.IsNullOrEmpty(link.NamespaceName))
{
sb.Append(link.NamespaceName);
sb.Append(':');
link.FullTitle = link.NamespaceName + ":" + link.Title;
}
sb.Append(link.Title);
if (link.Section != null)
{
sb.Append('#');
sb.Append(link.Section);
}
if (link.Anchor != null)
{
sb.Append('|');
sb.Append(link.Anchor);
}
link._FormattedText = sb.ToString();
return(link);
}
private static async Task <WikiLink> ParseInternalAsync(WikiSite site, IWikiFamily family, string text, int defaultNamespaceId, bool exceptionOnFailure)
{
if (site == null && family == null)
{
throw new ArgumentNullException(nameof(site) + "/" + nameof(family));
}
if (text == null)
{
throw new ArgumentNullException(nameof(text));
}
//preprocess text (these changes aren't site-dependent)
//First remove anchor, which is stored unchanged, if there is one
var pipePos = text.IndexOf('|');
var title = pipePos >= 0 ? text.Substring(0, pipePos) : text;
var anchor = pipePos >= 0 ? text.Substring(pipePos + 1) : null;
//This code was adapted from Title.php : secureAndSplit()
if (title.IndexOf('\ufffd') >= 0)
{
if (exceptionOnFailure)
{
throw new ArgumentException(string.Format(Prompts.ExceptionTitleIllegalCharacter1, "\uFFFD 'REPLACEMENT CHARACTER'"), nameof(text));
}
return(null);
}
var hashPos = title.IndexOf('#');
var section = hashPos >= 0 ? title.Substring(hashPos + 1) : null;
title = hashPos >= 0 ? title.Substring(0, hashPos) : title;
var match = IllegalTitlesPattern.Match(title);
if (match.Success)
{
if (exceptionOnFailure)
{
throw new ArgumentException(string.Format(Prompts.ExceptionTitleIllegalCharacterSequence1, match.Value));
}
return(null);
}
//Parse title parts.
var parsedTitle = await TitlePartitionAsync(site, family, title, defaultNamespaceId);
if (parsedTitle == null)
{
if (exceptionOnFailure)
{
throw new ArgumentException(string.Format(Prompts.ExceptionTitleIsEmpty1, title));
}
return(null);
}
var targetSite = parsedTitle.Item1;
var interwikiPrefix = parsedTitle.Item2;
var nsPrefix = parsedTitle.Item3;
var localTitle = parsedTitle.Item4;
if (targetSite == null)
{
if (interwikiPrefix == null)
{
// No interwiki prefix
// This means we are parsing WikiLink without originating WikiSite.
Debug.Assert(site == null);
if (exceptionOnFailure)
{
throw new ArgumentException(Prompts.ExceptionWikiLinkRequireInterwikiPrefix, nameof(text));
}
return(null);
}
// If we do not have wiki family information, and there IS an interwiki prefix,
// subsequent namespace will not be parsed and will be left as a part of Name
Debug.Assert(nsPrefix == null);
Debug.Assert(localTitle != null);
}
var link = new WikiLink(site, text)
{
Anchor = anchor,
Section = section,
InterwikiPrefix = interwikiPrefix,
NamespaceName = nsPrefix,
Title = localTitle,
FullTitle = localTitle,
TargetSite = targetSite
};
link.Namespace = nsPrefix != null && link.TargetSite != null
? link.TargetSite.Namespaces[nsPrefix]
: null;
//Format expression.
var sb = new StringBuilder();
if (link.InterwikiPrefix != null)
{
sb.Append(link.InterwikiPrefix);
sb.Append(':');
}
var fullTitleStartsAt = sb.Length;
if (!string.IsNullOrEmpty(link.NamespaceName))
{
sb.Append(link.NamespaceName);
sb.Append(':');
link.FullTitle = link.NamespaceName + ":" + link.Title;
}
sb.Append(link.Title);
if (link.Section != null)
{
sb.Append('#');
sb.Append(link.Section);
}
link.Target = sb.ToString();
link.FullTitleAndSection = fullTitleStartsAt == 0 ? link.Target : sb.ToString(fullTitleStartsAt, sb.Length - fullTitleStartsAt);
if (link.Anchor != null)
{
sb.Append('|');
sb.Append(link.Anchor);
}
link._FormattedText = sb.ToString();
return(link);
}