public Entity(string name, string pubid, string uri, string proxy)
{
Name = name;
PublicId = pubid;
Uri = uri;
Proxy = proxy;
Html = (name != null && StringUtilities.EqualsIgnoreCase(name, "html"));
}
public void Open(Entity parent, Uri baseUri)
{
Parent = parent;
if (parent != null)
{
this.Html = parent.Html;
}
this.Line = 1;
if (Internal)
{
if (this.Literal != null)
{
this.stm = new StringReader(this.Literal);
}
}
else if (this.Uri == null)
{
this.Error("Unresolvable entity '{0}'", this.Name);
}
else
{
if (baseUri != null)
{
this.resolvedUri = new Uri(baseUri, this.Uri);
}
else
{
this.resolvedUri = new Uri(this.Uri);
}
Stream stream = null;
Encoding e = Encoding.Default;
switch (this.resolvedUri.Scheme)
{
case "file":
{
string path = this.resolvedUri.LocalPath;
stream = new FileStream(path, FileMode.Open, FileAccess.Read);
}
break;
default:
HttpWebRequest wr = (HttpWebRequest)WebRequest.Create(ResolvedUri);
wr.UserAgent = "Mozilla/4.0 (compatible;);";
wr.Timeout = 10000;
if (Proxy != null)
{
wr.Proxy = new WebProxy(Proxy);
}
wr.PreAuthenticate = false;
wr.Credentials = CredentialCache.DefaultCredentials;
WebResponse resp = wr.GetResponse();
Uri actual = resp.ResponseUri;
if (actual.AbsoluteUri != this.resolvedUri.AbsoluteUri)
{
this.resolvedUri = actual;
}
string contentType = resp.ContentType.ToLower();
string mimeType = contentType;
int i = contentType.IndexOf(';');
if (i >= 0)
{
mimeType = contentType.Substring(0, i);
}
if (StringUtilities.EqualsIgnoreCase(mimeType, "text/html"))
{
this.Html = true;
}
i = contentType.IndexOf("charset");
e = Encoding.Default;
if (i >= 0)
{
int j = contentType.IndexOf("=", i);
int k = contentType.IndexOf(";", j);
if (k < 0)
{
k = contentType.Length;
}
if (j > 0)
{
j++;
string charset = contentType.Substring(j, k - j).Trim();
try
{
e = Encoding.GetEncoding(charset);
}
catch (Exception)
{
}
}
}
stream = resp.GetResponseStream();
break;
}
this.weOwnTheStream = true;
HtmlStream html = new HtmlStream(stream, e);
this.encoding = html.Encoding;
this.stm = html;
}
}
internal Decoder SniffMeta()
{
int i = ReadChar();
while (i != EOF)
{
char ch = (char)i;
if (ch == '<')
{
string name = SniffName();
if (name != null && StringUtilities.EqualsIgnoreCase(name, "meta"))
{
string httpequiv = null;
string content = null;
while (true)
{
string value = SniffAttribute(out name);
if (name == null)
{
break;
}
if (StringUtilities.EqualsIgnoreCase(name, "http-equiv"))
{
httpequiv = value;
}
else if (StringUtilities.EqualsIgnoreCase(name, "content"))
{
content = value;
}
}
if (httpequiv != null && StringUtilities.EqualsIgnoreCase(httpequiv, "content-type") && content != null)
{
int j = content.IndexOf("charset");
if (j >= 0)
{
j = content.IndexOf("=", j);
if (j >= 0)
{
j++;
int k = content.IndexOf(";", j);
if (k < 0)
{
k = content.Length;
}
string charset = content.Substring(j, k - j).Trim();
try
{
Encoding e = Encoding.GetEncoding(charset);
this.encoding = e;
return(e.GetDecoder());
}
catch
{
}
}
}
}
}
}
i = ReadChar();
}
return(null);
}
