private static int GetParameterLength(string input, int startIndex, out MediaTypeParameter parsedValue)
{
if (OffsetIsOutOfRange(startIndex, input.Length) || input[startIndex] != ';')
{
parsedValue = default(MediaTypeParameter);
return(0);
}
var nameLength = GetNameLength(input, startIndex, out var name);
var current = startIndex + nameLength;
if (nameLength == 0 || OffsetIsOutOfRange(current, input.Length) || input[current] != '=')
{
if (current == input.Length && name.Equals("*", StringComparison.OrdinalIgnoreCase))
{
var asterisk = new StringSegment("*");
parsedValue = new MediaTypeParameter(asterisk, asterisk);
return(current - startIndex);
}
else
{
parsedValue = default(MediaTypeParameter);
return(0);
}
}
var valueLength = GetValueLength(input, current, out var value);
parsedValue = new MediaTypeParameter(name, value);
current += valueLength;
return(current - startIndex);
}
private static int GetParameterLength(string input, int startIndex, out MediaTypeParameter parsedValue)
{
if (OffsetIsOutOfRange(startIndex, input.Length) ||
input[startIndex] != ';')
{
parsedValue = default(MediaTypeParameter);
return(0);
}
StringSegment name;
var nameLength = GetNameLength(input, startIndex, out name);
var current = startIndex + nameLength;
if (nameLength == 0 || OffsetIsOutOfRange(current, input.Length) || input[current] != '=')
{
parsedValue = default(MediaTypeParameter);
return(0);
}
StringSegment value;
var valueLength = GetValueLength(input, current, out value);
parsedValue = new MediaTypeParameter(name, value);
current = current + valueLength;
return(current - startIndex);
}
public bool ParseNextParameter(out MediaTypeParameter result)
{
if (_mediaTypeBuffer == null)
{
result = default(MediaTypeParameter);
return(false);
}
var parameterLength = GetParameterLength(_mediaTypeBuffer, CurrentOffset, out result);
CurrentOffset = CurrentOffset + parameterLength;
if (parameterLength == 0)
{
ParsingFailed = _length != null && CurrentOffset < _length;
return(false);
}
return(true);
}
public bool ParseNextParameter(out MediaTypeParameter result)
{
if (this._mediaTypeBuffer == null)
{
this.ParsingFailed = true;
result = default;
return(false);
}
var parameterLength = GetParameterLength(this._mediaTypeBuffer, this.CurrentOffset, out result);
this.CurrentOffset += parameterLength;
if (parameterLength == 0)
{
this.ParsingFailed = this._length != null && this.CurrentOffset < this._length;
return(false);
}
return(true);
}
private static int GetParameterLength(string input, int startIndex, out MediaTypeParameter parsedValue)
{
if (OffsetIsOutOfRange(startIndex, input.Length) || input[startIndex] != ';')
{
parsedValue = default(MediaTypeParameter);
return(0);
}
var nameLength = GetNameLength(input, startIndex, out var name);
var current = startIndex + nameLength;
if (nameLength == 0 || OffsetIsOutOfRange(current, input.Length) || input[current] != '=')
{
if (current == input.Length && name.Equals("*", StringComparison.OrdinalIgnoreCase))
{
// As a special case, we allow a trailing ";*" to indicate a wildcard
// string allowing any other parameters. It's the same as ";*=*".
var asterisk = new StringSegment("*");
parsedValue = new MediaTypeParameter(asterisk, asterisk);
return(current - startIndex);
}
else
{
parsedValue = default(MediaTypeParameter);
return(0);
}
}
var valueLength = GetValueLength(input, current, out var value);
parsedValue = new MediaTypeParameter(name, value);
current += valueLength;
return(current - startIndex);
}
