// non-javadoc, see interface LineParser
public virtual bool HasProtocolVersion(CharArrayBuffer buffer, ParserCursor cursor
)
{
Args.NotNull(buffer, "Char array buffer");
Args.NotNull(cursor, "Parser cursor");
int index = cursor.GetPos();
string protoname = this.protocol.GetProtocol();
int protolength = protoname.Length;
if (buffer.Length() < protolength + 4)
{
return(false);
}
// not long enough for "HTTP/1.1"
if (index < 0)
{
// end of line, no tolerance for trailing whitespace
// this works only for single-digit major and minor version
index = buffer.Length() - 4 - protolength;
}
else
{
if (index == 0)
{
// beginning of line, tolerate leading whitespace
while ((index < buffer.Length()) && HTTP.IsWhitespace(buffer.CharAt(index)))
{
index++;
}
}
}
// else within line, don't tolerate whitespace
if (index + protolength + 4 > buffer.Length())
{
return(false);
}
// just check protocol name and slash, no need to analyse the version
bool ok = true;
for (int j = 0; ok && (j < protolength); j++)
{
ok = (buffer.CharAt(index + j) == protoname[j]);
}
if (ok)
{
ok = (buffer.CharAt(index + protolength) == '/');
}
return(ok);
}
/// <summary>Helper to skip whitespace.</summary>
/// <remarks>Helper to skip whitespace.</remarks>
protected internal virtual void SkipWhitespace(CharArrayBuffer buffer, ParserCursor
cursor)
{
int pos = cursor.GetPos();
int indexTo = cursor.GetUpperBound();
while ((pos < indexTo) && HTTP.IsWhitespace(buffer.CharAt(pos)))
{
pos++;
}
cursor.UpdatePos(pos);
}
// non-javadoc, see interface HeaderValueParser
public virtual NameValuePair[] ParseParameters(CharArrayBuffer buffer, ParserCursor
cursor)
{
Args.NotNull(buffer, "Char array buffer");
Args.NotNull(cursor, "Parser cursor");
int pos = cursor.GetPos();
int indexTo = cursor.GetUpperBound();
while (pos < indexTo)
{
char ch = buffer.CharAt(pos);
if (HTTP.IsWhitespace(ch))
{
pos++;
}
else
{
break;
}
}
cursor.UpdatePos(pos);
if (cursor.AtEnd())
{
return(new NameValuePair[] { });
}
IList <NameValuePair> @params = new AList <NameValuePair>();
while (!cursor.AtEnd())
{
NameValuePair param = ParseNameValuePair(buffer, cursor);
@params.AddItem(param);
char ch = buffer.CharAt(cursor.GetPos() - 1);
if (ch == ElemDelimiter)
{
break;
}
}
return(Sharpen.Collections.ToArray(@params, new NameValuePair[@params.Count]));
}
// non-javadoc, see interface HeaderValueParser
public virtual HeaderElement ParseHeaderElement(CharArrayBuffer buffer, ParserCursor
cursor)
{
Args.NotNull(buffer, "Char array buffer");
Args.NotNull(cursor, "Parser cursor");
NameValuePair nvp = ParseNameValuePair(buffer, cursor);
NameValuePair[] @params = null;
if (!cursor.AtEnd())
{
char ch = buffer.CharAt(cursor.GetPos() - 1);
if (ch != ElemDelimiter)
{
@params = ParseParameters(buffer, cursor);
}
}
return(CreateHeaderElement(nvp.GetName(), nvp.GetValue(), @params));
}
public virtual NameValuePair ParseNameValuePair(CharArrayBuffer buffer, ParserCursor
cursor, char[] delimiters)
{
Args.NotNull(buffer, "Char array buffer");
Args.NotNull(cursor, "Parser cursor");
bool terminated = false;
int pos = cursor.GetPos();
int indexFrom = cursor.GetPos();
int indexTo = cursor.GetUpperBound();
// Find name
string name;
while (pos < indexTo)
{
char ch = buffer.CharAt(pos);
if (ch == '=')
{
break;
}
if (IsOneOf(ch, delimiters))
{
terminated = true;
break;
}
pos++;
}
if (pos == indexTo)
{
terminated = true;
name = buffer.SubstringTrimmed(indexFrom, indexTo);
}
else
{
name = buffer.SubstringTrimmed(indexFrom, pos);
pos++;
}
if (terminated)
{
cursor.UpdatePos(pos);
return(CreateNameValuePair(name, null));
}
// Find value
string value;
int i1 = pos;
bool qouted = false;
bool escaped = false;
while (pos < indexTo)
{
char ch = buffer.CharAt(pos);
if (ch == '"' && !escaped)
{
qouted = !qouted;
}
if (!qouted && !escaped && IsOneOf(ch, delimiters))
{
terminated = true;
break;
}
if (escaped)
{
escaped = false;
}
else
{
escaped = qouted && ch == '\\';
}
pos++;
}
int i2 = pos;
// Trim leading white spaces
while (i1 < i2 && (HTTP.IsWhitespace(buffer.CharAt(i1))))
{
i1++;
}
// Trim trailing white spaces
while ((i2 > i1) && (HTTP.IsWhitespace(buffer.CharAt(i2 - 1))))
{
i2--;
}
// Strip away quotes if necessary
if (((i2 - i1) >= 2) && (buffer.CharAt(i1) == '"') && (buffer.CharAt(i2 - 1) == '"'
))
{
i1++;
i2--;
}
value = buffer.Substring(i1, i2);
if (terminated)
{
pos++;
}
cursor.UpdatePos(pos);
return(CreateNameValuePair(name, value));
}
// non-javadoc, see interface LineParser
/// <exception cref="Org.Apache.Http.ParseException"></exception>
public virtual ProtocolVersion ParseProtocolVersion(CharArrayBuffer buffer, ParserCursor
cursor)
{
Args.NotNull(buffer, "Char array buffer");
Args.NotNull(cursor, "Parser cursor");
string protoname = this.protocol.GetProtocol();
int protolength = protoname.Length;
int indexFrom = cursor.GetPos();
int indexTo = cursor.GetUpperBound();
SkipWhitespace(buffer, cursor);
int i = cursor.GetPos();
// long enough for "HTTP/1.1"?
if (i + protolength + 4 > indexTo)
{
throw new ParseException("Not a valid protocol version: " + buffer.Substring(indexFrom
, indexTo));
}
// check the protocol name and slash
bool ok = true;
for (int j = 0; ok && (j < protolength); j++)
{
ok = (buffer.CharAt(i + j) == protoname[j]);
}
if (ok)
{
ok = (buffer.CharAt(i + protolength) == '/');
}
if (!ok)
{
throw new ParseException("Not a valid protocol version: " + buffer.Substring(indexFrom
, indexTo));
}
i += protolength + 1;
int period = buffer.IndexOf('.', i, indexTo);
if (period == -1)
{
throw new ParseException("Invalid protocol version number: " + buffer.Substring(indexFrom
, indexTo));
}
int major;
try
{
major = System.Convert.ToInt32(buffer.SubstringTrimmed(i, period));
}
catch (FormatException)
{
throw new ParseException("Invalid protocol major version number: " + buffer.Substring
(indexFrom, indexTo));
}
i = period + 1;
int blank = buffer.IndexOf(' ', i, indexTo);
if (blank == -1)
{
blank = indexTo;
}
int minor;
try
{
minor = System.Convert.ToInt32(buffer.SubstringTrimmed(i, blank));
}
catch (FormatException)
{
throw new ParseException("Invalid protocol minor version number: " + buffer.Substring
(indexFrom, indexTo));
}
cursor.UpdatePos(blank);
return(CreateProtocolVersion(major, minor));
}
private NameValuePair ParseNameValuePair(CharArrayBuffer buffer, ParserCursor cursor
)
{
bool terminated = false;
int pos = cursor.GetPos();
int indexFrom = cursor.GetPos();
int indexTo = cursor.GetUpperBound();
// Find name
string name = null;
while (pos < indexTo)
{
char ch = buffer.CharAt(pos);
if (ch == '=')
{
break;
}
if (ch == ';')
{
terminated = true;
break;
}
pos++;
}
if (pos == indexTo)
{
terminated = true;
name = buffer.SubstringTrimmed(indexFrom, indexTo);
}
else
{
name = buffer.SubstringTrimmed(indexFrom, pos);
pos++;
}
if (terminated)
{
cursor.UpdatePos(pos);
return(new BasicNameValuePair(name, null));
}
// Find value
string value = null;
int i1 = pos;
while (pos < indexTo)
{
char ch = buffer.CharAt(pos);
if (ch == ';')
{
terminated = true;
break;
}
pos++;
}
int i2 = pos;
// Trim leading white spaces
while (i1 < i2 && (HTTP.IsWhitespace(buffer.CharAt(i1))))
{
i1++;
}
// Trim trailing white spaces
while ((i2 > i1) && (HTTP.IsWhitespace(buffer.CharAt(i2 - 1))))
{
i2--;
}
value = buffer.Substring(i1, i2);
if (terminated)
{
pos++;
}
cursor.UpdatePos(pos);
return(new BasicNameValuePair(name, value));
}