/// <summary>
/// Initializes an instance of <see cref="EnvelopedSignatureWriter"/>. The returned writer can be directly used
/// to write the envelope. The signature will be automatically generated when
/// the envelope is completed.
/// </summary>
/// <param name="writer">Writer to wrap/</param>
/// <param name="signingCredentials">SigningCredentials to be used to generate the signature.</param>
/// <param name="referenceId">The reference Id of the envelope.</param>
/// <param name="inclusivePrefixList">inclusive prefix list to use for exclusive canonicalization.</param>
/// <exception cref="ArgumentNullException">if <paramref name="writer"/> is null.</exception>
/// <exception cref="ArgumentNullException">if <paramref name="signingCredentials"/> is null.</exception>
/// <exception cref="ArgumentNullException">if <paramref name="referenceId"/> is null or Empty.</exception>
public EnvelopedSignatureWriter(XmlWriter writer, SigningCredentials signingCredentials, string referenceId, string inclusivePrefixList)
{
_originalWriter = writer ?? throw LogArgumentNullException(nameof(writer));
_signingCredentials = signingCredentials ?? throw LogArgumentNullException(nameof(signingCredentials));
if (string.IsNullOrEmpty(referenceId))
{
throw LogArgumentNullException(nameof(referenceId));
}
_inclusiveNamespacesPrefixList = inclusivePrefixList;
_referenceUri = referenceId;
_writerStream = new MemoryStream();
_canonicalStream = new MemoryStream();
InnerWriter = CreateTextWriter(_writerStream, Encoding.UTF8, false);
InnerWriter.StartCanonicalization(_canonicalStream, false, XmlUtil.TokenizeInclusiveNamespacesPrefixList(_inclusiveNamespacesPrefixList));
_signaturePosition = -1;
}
