/// <summary>
/// Append bucket to brigade.
/// </summary>
public static void stream_bucket_append(UserFilterBucketBrigade brigade, UserFilterBucket bucket)
{
if (!bucket.data.IsEmpty)
{
brigade.bucket.EnsureWritable().Append(bucket.data);
}
}
/// <summary>
/// Prepend bucket to brigade.
/// </summary>
public static void stream_bucket_prepend(UserFilterBucketBrigade brigade, UserFilterBucket bucket)
{
if (!bucket.data.IsEmpty)
{
var blob = bucket.data.DeepCopy().EnsureWritable();
blob.Append(brigade.bucket);
brigade.bucket = new PhpString(blob);
}
}
/// <summary>
/// Return a bucket object from the brigade for operating on.
/// </summary>
/// <returns>Object or <c>NULL</c>.</returns>
public static UserFilterBucket stream_bucket_make_writeable(UserFilterBucketBrigade brigade)
{
if (brigade == null || brigade.consumed >= brigade.bucket.Length)
{
return(null);
}
brigade.consumed = brigade.bucket.Length;
return(new UserFilterBucket
{
data = brigade.bucket,
datalen = brigade.bucket.Length,
});
}
public sealed override TextElement /*PhpFilter.*/ Filter(IEncodingProvider enc, TextElement input, bool closing)
{
var @in = new UserFilterBucketBrigade()
{
bucket = input.ToPhpString()
};
var @out = new UserFilterBucketBrigade();
var consumed = new PhpAlias(0L);
switch ((PhpFilters.FilterStatus)filter(@in, @out, consumed, closing))
{
case PhpFilters.FilterStatus.OK:
return(new TextElement(@out.bucket, enc.StringEncoding));
case PhpFilters.FilterStatus.MoreData:
return(TextElement.Empty);
case PhpFilters.FilterStatus.FatalError:
default:
// silently stop feeding this filter
return(TextElement.Null);
}
}