/// <summary>
/// Appends <code>len</code> chars to this buffer from the given source
/// char array buffer starting at index <code>off</code>.
/// </summary>
/// <remarks>
/// Appends <code>len</code> chars to this buffer from the given source
/// char array buffer starting at index <code>off</code>. The capacity
/// of the buffer is increased if necessary to accommodate all
/// <code>len</code> chars.
/// <p>
/// The chars are converted to bytes using simple cast.
/// </remarks>
/// <param name="b">the chars to be appended.</param>
/// <param name="off">the index of the first char to append.</param>
/// <param name="len">the number of bytes to append.</param>
/// <exception cref="System.IndexOutOfRangeException">
/// if <code>off</code> if out of
/// range, <code>len</code> is negative, or
/// <code>off</code> + <code>len</code> is out of range.
/// </exception>
public void Append(CharArrayBuffer b, int off, int len)
{
if (b == null)
{
return;
}
Append(b.Buffer(), off, len);
}
/// <summary>
/// Appends all chars to this buffer from the given source buffer starting
/// at index <code>0</code>.
/// </summary>
/// <remarks>
/// Appends all chars to this buffer from the given source buffer starting
/// at index <code>0</code>. The capacity of the destination buffer is
/// increased, if necessary, to accommodate all
/// <see cref="Length()">Length()</see>
/// chars.
/// </remarks>
/// <param name="b">the source buffer to be appended.</param>
public void Append(Org.Apache.Http.Util.CharArrayBuffer b)
{
if (b == null)
{
return;
}
Append(b.buffer, 0, b.len);
}
/// <summary>
/// Appends <code>len</code> chars to this buffer from the given source
/// buffer starting at index <code>off</code>.
/// </summary>
/// <remarks>
/// Appends <code>len</code> chars to this buffer from the given source
/// buffer starting at index <code>off</code>. The capacity of the
/// destination buffer is increased, if necessary, to accommodate all
/// <code>len</code> chars.
/// </remarks>
/// <param name="b">the source buffer to be appended.</param>
/// <param name="off">the index of the first char to append.</param>
/// <param name="len">the number of chars to append.</param>
/// <exception cref="System.IndexOutOfRangeException">
/// if <code>off</code> is out of
/// range, <code>len</code> is negative, or
/// <code>off</code> + <code>len</code> is out of range.
/// </exception>
public void Append(Org.Apache.Http.Util.CharArrayBuffer b, int off, int len)
{
if (b == null)
{
return;
}
Append(b.buffer, off, len);
}
/// <summary>
/// Get the entity content as a String, using the provided default character set
/// if none is found in the entity.
/// </summary>
/// <remarks>
/// Get the entity content as a String, using the provided default character set
/// if none is found in the entity.
/// If defaultCharset is null, the default "ISO-8859-1" is used.
/// </remarks>
/// <param name="entity">must not be null</param>
/// <param name="defaultCharset">character set to be applied if none found in the entity
/// </param>
/// <returns>
/// the entity content as a String. May be null if
/// <see cref="Org.Apache.Http.HttpEntity.GetContent()">Org.Apache.Http.HttpEntity.GetContent()
/// </see>
/// is null.
/// </returns>
/// <exception cref="Org.Apache.Http.ParseException">if header elements cannot be parsed
/// </exception>
/// <exception cref="System.ArgumentException">if entity is null or if content length > Integer.MAX_VALUE
/// </exception>
/// <exception cref="System.IO.IOException">if an error occurs reading the input stream
/// </exception>
/// <exception cref="Sharpen.UnsupportedCharsetException">
/// Thrown when the named charset is not available in
/// this instance of the Java virtual machine
/// </exception>
public static string ToString(HttpEntity entity, Encoding defaultCharset)
{
Args.NotNull(entity, "Entity");
InputStream instream = entity.GetContent();
if (instream == null)
{
return(null);
}
try
{
Args.Check(entity.GetContentLength() <= int.MaxValue, "HTTP entity too large to be buffered in memory"
);
int i = (int)entity.GetContentLength();
if (i < 0)
{
i = 4096;
}
Encoding charset = null;
try
{
ContentType contentType = ContentType.Get(entity);
if (contentType != null)
{
charset = contentType.GetCharset();
}
}
catch (UnsupportedCharsetException ex)
{
throw new UnsupportedEncodingException(ex.Message);
}
if (charset == null)
{
charset = defaultCharset;
}
if (charset == null)
{
charset = HTTP.DefContentCharset;
}
StreamReader reader = new InputStreamReader(instream, charset);
CharArrayBuffer buffer = new CharArrayBuffer(i);
char[] tmp = new char[1024];
int l;
while ((l = reader.Read(tmp)) != -1)
{
buffer.Append(tmp, 0, l);
}
return(buffer.ToString());
}
finally
{
instream.Close();
}
}
