public bool ParseFirstLine()
{
_reader.Consume('\r', '\n');
if (!_reader.Contains('\n'))
{
throw new ParseException("Invalid firstline.");
}
var firstLine = _reader.ReadFoldedLine();
if (firstLine.EndsWith(SipConstants.SipTwoZeroString))
{
SipRequestLine requestLine = new SipRequestLineParser().Parse(firstLine);
_listener.OnRequest(requestLine);
}
else if (firstLine.StartsWith(SipConstants.SipTwoZeroString))
{
var message = new SipResponse();
var statusLine = new SipStatusLineParser().Parse(firstLine);
_listener.OnResponse(statusLine);
}
else
{
throw new ParseException(ExceptionMessage.InvalidFirstLineFormat);
}
_parserMethod = GetHeaderName;
return(true);
}
/// <summary>
/// Try to find a header name.
/// </summary>
/// <returns></returns>
private bool GetHeaderName()
{
// empty line. body is begining.
if (_reader.Current == '\r' && _reader.Peek == '\n')
{
// Eat the line break
_reader.Consume('\r', '\n');
// Don't have a body?
if (_bodyBytesLeft == 0)
{
OnComplete();
_parserMethod = ParseFirstLine;
}
else
{
_parserMethod = GetBody;
}
return(true);
}
_headerName = _reader.ReadUntil(':');
if (_headerName == null)
{
return(false);
}
_reader.Consume(); // eat colon
_parserMethod = GetHeaderValue;
return(true);
}
private bool ParseFirstLine()
{
_reader.Consume('\r', '\n');
if (!_reader.Contains('\n'))
{
throw new ParseException("Invalid firstline.");
}
var firstLine = _reader.ReadFoldedLine();
_onFirstLine(firstLine);
_parserMethod = GetHeaderName;
return(true);
}
/// <summary>
/// 解析请求或响应消息的第一行
/// </summary>
/// <returns><c>true</c> if first line is well formatted; otherwise <c>false</c>.</returns>
/// <exception cref="BadRequestException">Invalid request/response line.</exception>
private bool ParseFirstLine()
{
/* HTTP Message Example
* GET /path/file.html HTTP/1.0
* From: [email protected]
* User-Agent: HTTPTool/1.0
* [blank line here]
*
* HTTP/1.0 200 OK
* Date: Fri, 31 Dec 1999 23:59:59 GMT
* Content-Type: text/html
* Content-Length: 1354
*
* <html>
* <body>
* <h1>Happy New Millennium!</h1>
* (more file contents)
* </body>
* </html>
*/
_reader.Consume('\r', '\n');
// Do not contain a complete first line.
if (!_reader.Contains('\n'))
{
return(false);
}
var words = new string[3];
words[0] = _reader.ReadUntil(' ');
_reader.Consume(); // eat delimiter
words[1] = _reader.ReadUntil(' ');
_reader.Consume(); // eat delimiter
words[2] = _reader.ReadLine();
if (string.IsNullOrEmpty(words[0]) ||
string.IsNullOrEmpty(words[1]) ||
string.IsNullOrEmpty(words[2]))
{
throw new BadRequestException("Invalid request/response line.");
}
// 成功找到消息的第一行
OnFirstLine(words);
// 指定下一步解析方式
_parserMethod = GetHeaderName;
return(true);
}
private void TestReadUntilOneHeader()
{
byte[] bytes = _encoding.GetBytes("Welcome : Here\r\n");
_reader.Assign(bytes, 0, bytes.Length);
Assert.Equal("Welcome", _reader.ReadUntil(':'));
_reader.Consume(); // eat delimiter
_reader.Consume('\t', ' ');
Assert.Equal("Here", _reader.ReadLine());
}
private static TypeSpec ParseInternal(ref ReadOnlySpan <char> input)
{
TypeSpec result;
char c;
BufferReader s = default;
s.Input = input;
// Read namespace and class name, including generic arity, which is a part of the class name.
NamedTypeSpec named = null;
while (true)
{
var typeName = ParseTypeName(ref s);
named = new NamedTypeSpec(named, typeName.ToString(), s.TotalGenericArity);
if (s.TryPeek(out c) && c == NestedTypeIndicator)
{
// Consume the nested type indicator, then loop to parse the nested type.
s.ConsumeCharacter(NestedTypeIndicator);
continue;
}
break;
}
// Parse generic type parameters
if (s.TotalGenericArity > 0 && s.TryPeek(out c) && c == ArrayStartIndicator)
{
s.ConsumeCharacter(ArrayStartIndicator);
var arguments = new TypeSpec[s.TotalGenericArity];
for (var i = 0; i < s.TotalGenericArity; i++)
{
if (i > 0)
{
s.ConsumeCharacter(ParameterSeparator);
}
// Parse the argument type
s.ConsumeCharacter(ArrayStartIndicator);
var remaining = s.Remaining;
arguments[i] = ParseInternal(ref remaining);
var consumed = s.Remaining.Length - remaining.Length;
s.Consume(consumed);
s.ConsumeCharacter(ArrayEndIndicator);
}
s.ConsumeCharacter(ArrayEndIndicator);
result = new ConstructedGenericTypeSpec(named, arguments);
}
else
{
// This is not a constructed generic type
result = named;
}
// Parse modifiers
bool hadModifier;
do
{
hadModifier = false;
if (!s.TryPeek(out c))
{
break;
}
switch (c)
{
case ArrayStartIndicator:
var dimensions = ParseArraySpecifier(ref s);
result = new ArrayTypeSpec(result, dimensions);
hadModifier = true;
break;
case PointerIndicator:
result = new PointerTypeSpec(result);
s.ConsumeCharacter(PointerIndicator);
hadModifier = true;
break;
case ReferenceIndicator:
result = new ReferenceTypeSpec(result);
s.ConsumeCharacter(ReferenceIndicator);
hadModifier = true;
break;
}
} while (hadModifier);
// Extract the assembly, if specified.
if (s.TryPeek(out c) && c == AssemblyIndicator)
{
s.ConsumeCharacter(AssemblyIndicator);
var assembly = ExtractAssemblySpec(ref s);
result = new AssemblyQualifiedTypeSpec(result, assembly.ToString());
}
input = s.Remaining;
return(result);
}
public void ReadHannes_ConsumeH_ExpectIndexToBeOne()
{
CreateBufferReader("hannes");
_reader.Consume('h');
_reader.Index.Should().Be(1);
}
