private static bool FormatString(string format, object[] args, out List<string> segments)
{
segments = null;
MatchCollection matches = _formatRegex.Matches(format);
if (matches.Count == 0) return false;
int lastEnd = 0;
int argPos = 0;
segments = new List<string>();
foreach (Match m in matches) {
if (lastEnd < m.Index) {
segments.Add(format.Substring(lastEnd, m.Index - lastEnd));
}
FormatSpecification fs = new FormatSpecification(m);
if (fs.Width == int.MinValue) {
if (!(argPos < args.Length) || !(args[argPos] is int)) throw new Exception("printf width parameter was not provided");
fs.Width = (int)args[argPos];
argPos = argPos + 1;
}
if (fs.Precision == int.MinValue) {
if (!(argPos < args.Length) || !(args[argPos] is int)) throw new Exception("printf precision parameter was not provided");
fs.Precision = (int)args[argPos];
argPos = argPos + 1;
}
segments.Add(fs.Format(args[argPos]));
argPos++;
lastEnd = m.Index + m.Value.Length;
}
if (lastEnd < format.Length) {
segments.Add(format.Substring(lastEnd));
}
return true;
}
