public static bool IsInlineImage(string contentType, string fileExtension)
{
if (contentType != null && DefaultHtmlCallbacks.IsInlineImage(contentType))
{
return(true);
}
if (fileExtension != null)
{
contentType = Attachment.CalculateContentType(fileExtension);
return(DefaultHtmlCallbacks.IsInlineImage(contentType));
}
return(false);
}
public override void ProcessTag(HtmlTagContext tagContext, HtmlWriter htmlWriter)
{
if (tagContext.TagId != HtmlTagId.Img)
{
tagContext.WriteTag(true);
return;
}
AttachmentLink attachmentLink = null;
string text = null;
foreach (HtmlTagContextAttribute htmlTagContextAttribute in tagContext.Attributes)
{
if (htmlTagContextAttribute.Id == HtmlAttributeId.Src)
{
text = htmlTagContextAttribute.Value;
break;
}
}
if (!string.IsNullOrEmpty(text))
{
attachmentLink = base.FindAttachmentByBodyReference(text);
}
if (attachmentLink == null)
{
if (!this.clearEmptyLinks || !DefaultHtmlCallbacks.IsEmptyLink(text))
{
tagContext.WriteTag(true);
}
return;
}
string text2;
string text3;
if (attachmentLink.AttachmentType == AttachmentType.Ole)
{
text2 = "image/jpeg";
text3 = "jpg";
attachmentLink.ConvertToImage();
}
else
{
text2 = attachmentLink.ContentType;
text3 = attachmentLink.FileExtension;
}
bool flag = text.StartsWith("cid:Microsoft-Infopath-", StringComparison.OrdinalIgnoreCase) && string.IsNullOrEmpty(text3) && !string.IsNullOrEmpty(text2) && text2.Equals("application/octet-stream");
if (DefaultHtmlCallbacks.IsInlineImage(text2, text3) || flag)
{
tagContext.WriteTag(false);
foreach (HtmlTagContextAttribute htmlTagContextAttribute2 in tagContext.Attributes)
{
if (htmlTagContextAttribute2.Id == HtmlAttributeId.Src)
{
string value = "cid:" + this.GetOrGenerateAttachContentId(attachmentLink);
htmlWriter.WriteAttribute(HtmlAttributeId.Src, value);
}
else
{
htmlTagContextAttribute2.Write();
}
}
attachmentLink.MarkInline(true);
return;
}
if (!this.RemoveLinksToNonImageAttachments)
{
string text4 = attachmentLink.Filename;
if (text4 == null)
{
text4 = ServerStrings.DefaultHtmlAttachmentHrefText;
}
htmlWriter.WriteStartTag(HtmlTagId.A);
htmlWriter.WriteAttribute(HtmlAttributeId.Href, "cid:" + this.GetOrGenerateAttachContentId(attachmentLink));
htmlWriter.WriteText(text4);
htmlWriter.WriteEndTag(HtmlTagId.A);
attachmentLink.MarkInline(false);
}
}