public static IEnumerable <TextEntityDescription> ParseText(
string text, IEnumerable <TwitterEntity> entities)
{
if (entities == null)
{
throw new ArgumentNullException("entities");
}
var escaped = ParsingExtension.EscapeEntity(text);
var endIndex = 0;
// distinct by startindex ignores extended_entities.
foreach (var entity in entities.Distinct(e => e.StartIndex).OrderBy(e => e.StartIndex))
{
if (endIndex < entity.StartIndex)
{
// return raw string
yield return(new TextEntityDescription(ParsingExtension.ResolveEntity(
escaped.SurrogatedSubstring(endIndex, entity.StartIndex - endIndex))));
}
if (escaped.Length <= entity.StartIndex || escaped.Length < entity.EndIndex)
{
// Twitter rarely gives entities of extended_tweet for text of compatibility mode.
// We need paranoiac test here.
continue;
}
// get entitied text
var body = ParsingExtension.ResolveEntity(escaped.SurrogatedSubstring(
entity.StartIndex, entity.EndIndex - entity.StartIndex));
yield return(new TextEntityDescription(body, entity));
endIndex = entity.EndIndex;
}
if (endIndex == 0)
{
// entity is empty.
yield return(new TextEntityDescription(text));
}
else if (endIndex < escaped.Length)
{
// return remain text
yield return(new TextEntityDescription(ParsingExtension.ResolveEntity(
escaped.SurrogatedSubstring(endIndex))));
}
}
public static IEnumerable <TextEntityDescription> ParseText(
string text, IEnumerable <TwitterEntity> entities)
{
if (entities == null)
{
throw new ArgumentNullException("entities");
}
var escaped = ParsingExtension.EscapeEntity(text);
var endIndex = 0;
foreach (var entity in entities.OrderBy(e => e.StartIndex))
{
if (endIndex < entity.StartIndex)
{
// return raw string
yield return(new TextEntityDescription(ParsingExtension.ResolveEntity(
escaped.SubstringForSurrogatePaire(endIndex, entity.StartIndex - endIndex))));
}
// get entitied text
var body = ParsingExtension.ResolveEntity(escaped.SubstringForSurrogatePaire(
entity.StartIndex, entity.EndIndex - entity.StartIndex));
yield return(new TextEntityDescription(body, entity));
endIndex = entity.EndIndex;
}
if (endIndex == 0)
{
// entity is empty.
yield return(new TextEntityDescription(text));
}
else if (endIndex < escaped.Length)
{
// return remain text
yield return(new TextEntityDescription(ParsingExtension.ResolveEntity(
escaped.SubstringForSurrogatePaire(endIndex))));
}
}
