private static void CheckValidGetRangeItemListLength(string input, int startIndex, int expectedLength,
params Tuple <long?, long?>[] expectedRanges)
{
List <RangeItemHeaderValue> ranges = new List <RangeItemHeaderValue>();
Assert.Equal(expectedLength, RangeItemHeaderValue.GetRangeItemListLength(input, startIndex, ranges));
Assert.Equal <int>(expectedRanges.Length, ranges.Count);
for (int i = 0; i < expectedRanges.Length; i++)
{
Assert.Equal(expectedRanges[i].Item1, ranges[i].From);
Assert.Equal(expectedRanges[i].Item2, ranges[i].To);
}
}
private static int GetRangeLength(StringSegment input, int startIndex, out RangeHeaderValue?parsedValue)
{
Contract.Requires(startIndex >= 0);
parsedValue = null;
if (StringSegment.IsNullOrEmpty(input) || (startIndex >= input.Length))
{
return(0);
}
// Parse the unit string: <unit> in '<unit>=<from1>-<to1>, <from2>-<to2>'
var unitLength = HttpRuleParser.GetTokenLength(input, startIndex);
if (unitLength == 0)
{
return(0);
}
RangeHeaderValue result = new RangeHeaderValue();
result._unit = input.Subsegment(startIndex, unitLength);
var current = startIndex + unitLength;
current = current + HttpRuleParser.GetWhitespaceLength(input, current);
if ((current == input.Length) || (input[current] != '='))
{
return(0);
}
current++; // skip '=' separator
current = current + HttpRuleParser.GetWhitespaceLength(input, current);
var rangesLength = RangeItemHeaderValue.GetRangeItemListLength(input, current, result.Ranges);
if (rangesLength == 0)
{
return(0);
}
current = current + rangesLength;
Contract.Assert(current == input.Length, "GetRangeItemListLength() should consume the whole string or fail.");
parsedValue = result;
return(current - startIndex);
}
private static void CheckInvalidGetRangeItemListLength(string input, int startIndex)
{
List <RangeItemHeaderValue> ranges = new List <RangeItemHeaderValue>();
Assert.Equal(0, RangeItemHeaderValue.GetRangeItemListLength(input, startIndex, ranges));
}