public PathMatchResult Match(string path)
{
var result = new PathMatchResult
{
Parameters = new string[ArgumentCount],
Success = false
};
if (MatchSingleLiteral(path, _literal0))
{
result.Success = MatchRemainder(result, 0, path.Substring(_literal0.Length));
}
return result;
}
private bool MatchRemainder(PathMatchResult result, int argNumber, string remainder)
{
if (argNumber == ArgumentCount)
return remainder.Length == 0;
var literal = _literals[argNumber];
if (literal.Length == 0) // no trailing literal, all is argument; only allowed at end
{
if (remainder.Length == 0) // no arg is not allowed
return false;
result.Parameters[argNumber] = remainder;
return true;
}
// Start at pos 1, not 0, because the arg should always match at least one char
for (int p = 0; p < remainder.Length;)
{
var literalPos = remainder.IndexOf(literal, p);
if (literalPos < 0)
return false;
else if (literalPos == 0 && p < remainder.Length) // found immediately, so try stepping forward just one char
literalPos = remainder.IndexOf(literal, p + 1);
result.Parameters[argNumber] = remainder.Substring(p, literalPos - p);
p = literalPos + literal.Length;
if (MatchRemainder(result, argNumber + 1, remainder.Substring(p)))
return true;
}
return false;
}
