DateTimeOffset?GetDateValue(string name)
{
var value = FindParameter(name);
if (value == null || value == null)
{
return(null);
}
if (value.Length < 3)
{
return(null);
}
if (value[0] == '\"')
{
value = value.Substring(1, value.Length - 2);
}
DateTimeOffset offset;
if (Lexer.TryGetDateValue(value, out offset))
{
return(offset);
}
return(null);
}
public static bool TryParse(string input, out RangeConditionHeaderValue parsedValue)
{
parsedValue = null;
var lexer = new Lexer(input);
var t = lexer.Scan();
bool is_weak;
if (t == Token.Type.Token)
{
if (lexer.GetStringValue(t) != "W")
{
DateTimeOffset date;
if (!Lexer.TryGetDateValue(input, out date))
{
return(false);
}
parsedValue = new RangeConditionHeaderValue(date);
return(true);
}
if (lexer.PeekChar() != '/')
{
return(false);
}
is_weak = true;
lexer.EatChar();
t = lexer.Scan();
}
else
{
is_weak = false;
}
if (t != Token.Type.QuotedString)
{
return(false);
}
if (lexer.Scan() != Token.Type.End)
{
return(false);
}
parsedValue = new RangeConditionHeaderValue(
new EntityTagHeaderValue()
{
Tag = lexer.GetStringValue(t),
IsWeak = is_weak
});
return(true);
}
public static bool TryParse(string input, out RetryConditionHeaderValue parsedValue)
{
parsedValue = null;
var lexer = new Lexer(input);
var t = lexer.Scan();
if (t != Token.Type.Token)
{
return(false);
}
var ts = lexer.TryGetTimeSpanValue(t);
if (ts != null)
{
if (lexer.Scan() != Token.Type.End)
{
return(false);
}
parsedValue = new RetryConditionHeaderValue(ts.Value);
}
else
{
DateTimeOffset date;
if (!Lexer.TryGetDateValue(input, out date))
{
return(false);
}
parsedValue = new RetryConditionHeaderValue(date);
}
return(true);
}
static bool TryParseElement(Lexer lexer, out WarningHeaderValue parsedValue, out Token t)
{
parsedValue = null;
t = lexer.Scan();
if (t != Token.Type.Token)
{
return(false);
}
int code;
if (!lexer.TryGetNumericValue(t, out code) || !IsCodeValid(code))
{
return(false);
}
t = lexer.Scan();
if (t != Token.Type.Token)
{
return(false);
}
var next = t;
if (lexer.PeekChar() == ':')
{
lexer.EatChar();
next = lexer.Scan();
if (next != Token.Type.Token)
{
return(false);
}
}
var value = new WarningHeaderValue();
value.Code = code;
value.Agent = lexer.GetStringValue(t, next);
t = lexer.Scan();
if (t != Token.Type.QuotedString)
{
return(false);
}
value.Text = lexer.GetStringValue(t);
t = lexer.Scan();
if (t == Token.Type.QuotedString)
{
DateTimeOffset date;
if (!lexer.TryGetDateValue(t, out date))
{
return(false);
}
value.Date = date;
t = lexer.Scan();
}
parsedValue = value;
return(true);
}
public static bool TryParse(string input, out DateTimeOffset result)
{
return(Lexer.TryGetDateValue(input, out result));
}