public static string GetString(Stream stream, string contentType, bool ignorePageEncoding, bool detectHtmlContentType, out Encoding DetectedEncode)
{
bool detectEncoding = true;
string result = string.Empty;
StreamReader reader;
Encoding resultEncoding = null;
if (string.IsNullOrEmpty(contentType) == false)
{
resultEncoding = GetContentTypeEncoding(contentType);
if (resultEncoding != null)
{
// encoding found by Response Content Type
detectEncoding = false;
}
}
// Seek to beginning of the stream
if (stream.CanSeek)
{
stream.Seek(0, SeekOrigin.Begin);
}
if (detectEncoding)
{
// Read the string
if (ignorePageEncoding)
{
reader = new StreamReader(stream, true);
}
else
{
reader = new StreamReader(stream, _DefaultEncoding, true);
}
// Reading data from stream to the string
result = reader.ReadToEnd();
// get the detected encoding
resultEncoding = reader.CurrentEncoding;
}
else
{
// open the reader with found result
// do not detect encoding
reader = new StreamReader(stream, resultEncoding, false);
// Reading data from stream to the string
result = reader.ReadToEnd();
}
try
{
if (detectHtmlContentType)
{
// Get content type from html meta tag content
string htmlContentType = HtmlTags.GetContentType(ref result, null);
// If html content type is present
if (!string.IsNullOrEmpty(htmlContentType))
{
// Getting encoding of content type
Encoding htmlEncoding = Encoding.GetEncoding(htmlContentType);
// if the encoding is different
if (resultEncoding != htmlEncoding)
{
// Seek to fisrt
if (stream.CanSeek)
{
stream.Seek(0, SeekOrigin.Begin);
}
// Read the string
reader = new StreamReader(stream, htmlEncoding, true);
result = reader.ReadToEnd();
// End of string reading
// getting the detected encoding
resultEncoding = reader.CurrentEncoding;
}
}
}
// Ignore encoding
if (ignorePageEncoding)
{
// If encoding isn't UTF-8, we should convert it to Utf-8
if (resultEncoding != Encoding.UTF8)
{
result = ConvertEncoding(result, resultEncoding, Encoding.UTF8);
}
// Now the result is UTF-8
resultEncoding = Encoding.UTF8;
}
}
catch (Exception ex)
{
// Ingoring any error
// Just go away
if (Systems.LogSystem.ErrorLogEnabled)
{
Systems.LogSystem.LogError(ex, "GetString error");
}
}
// Return the detected result
DetectedEncode = resultEncoding;
return(result);
}
/// <summary>
/// For test
/// </summary>
private static string GetString__HARD(Stream stream, bool ignorePageEncoding, out Encoding DetectedEncode)
{
string result = "";
StreamReader reader;
Encoding ResultEncoding;
// Seek to beginning of the stream
if (stream.CanSeek)
{
stream.Seek(0, SeekOrigin.Begin);
}
// Read the string
if (ignorePageEncoding)
{
reader = new StreamReader(stream, true);
}
else
{
reader = new StreamReader(stream, _DefaultEncoding, true);
}
// Reading data from stream to the string
result = reader.ReadToEnd();
// Getting detected encoding
Encoding StreamEncoding = reader.CurrentEncoding;
DetectedEncode = StreamEncoding;
// End of string reading
try
{
// Get content type from html meta tag content
string HtmlContentType = HtmlTags.GetContentType(ref result, "");
// If html content type is present
if (!string.IsNullOrEmpty(HtmlContentType))
{
// Getting encoding of content type
ResultEncoding = Encoding.GetEncoding(HtmlContentType);
if (ResultEncoding != StreamEncoding)
{
// Seek to fisrt
stream.Seek(0, SeekOrigin.Begin);
// Read the string
reader = new StreamReader(stream, ResultEncoding, true);
result = reader.ReadToEnd();
// End of string reading
ResultEncoding = reader.CurrentEncoding;
}
else
{
ResultEncoding = StreamEncoding;
}
}
else
{
ResultEncoding = StreamEncoding;
}
// Ignore encoding
if (ignorePageEncoding)
{
// If encoding isn't UTF-8, we should convert it to Utf-8
if (ResultEncoding != Encoding.UTF8)
{
result = ConvertEncoding(result, ResultEncoding, Encoding.UTF8);
}
// Now the result is UTF-8
ResultEncoding = Encoding.UTF8;
}
// Return the detected result
DetectedEncode = ResultEncoding;
}
catch
{
// Ingoring any error
// Just go away
}
return(result);
}
