GetRangeItemListLength() static private method

static private GetRangeItemListLength ( string? input, int startIndex, ICollection rangeCollection ) : int
input string?
startIndex int
rangeCollection ICollection
return int
RangeItemHeaderValue Class Documentation
Esempio n. 1
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        internal static int GetRangeLength(string input, int startIndex, out object parsedValue)
        {
            Contract.Requires(startIndex >= 0);

            parsedValue = null;

            if (string.IsNullOrEmpty(input) || (startIndex >= input.Length))
            {
                return(0);
            }

            // Parse the unit string: <unit> in '<unit>=<from1>-<to1>, <from2>-<to2>'
            int unitLength = HttpRuleParser.GetTokenLength(input, startIndex);

            if (unitLength == 0)
            {
                return(0);
            }

            RangeHeaderValue result = new RangeHeaderValue();

            result._unit = input.Substring(startIndex, unitLength);
            int 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);

            int rangesLength = RangeItemHeaderValue.GetRangeItemListLength(input, current, result.Ranges);

            if (rangesLength == 0)
            {
                return(0);
            }

            current = current + rangesLength;
            Debug.Assert(current == input.Length, "GetRangeItemListLength() should consume the whole string or fail.");

            parsedValue = result;
            return(current - startIndex);
        }