internal IString LTRReplace(Regex regex, IString input, MatchAppendEvaluator evaluator, int count, int startat, bool needs_groups_or_captures)
{
this.needs_groups_or_captures = needs_groups_or_captures;
Match m = Scan(regex, input, startat, input.Length);
if (!m.Success)
{
return(input);
}
StringBuilder result = new StringBuilder(input.Length * 2);
int ptr = startat;
int counter = count;
input.AppendTo(result, 0, ptr);
do
{
if (count != -1)
{
if (counter-- <= 0)
{
break;
}
}
if (m.Index < ptr)
{
throw new SystemException("how");
}
int appendLen = m.Index - ptr;
input.AppendTo(result, ptr, appendLen);
evaluator(m, result);
ptr = m.Index + m.Length;
m = m.NextMatch();
} while (m.Success);
input.AppendTo(result, ptr, input.Length - ptr);
return(new WrappedStringBuilder(result));
}
internal IString RTLReplace(Regex regex, IString input, MatchEvaluator evaluator, int count, int startat)
{
Match m = Scan(regex, input, startat, input.Length);
if (!m.Success)
{
return(input);
}
int ptr = startat;
int counter = count;
#if NET_2_1
var pieces = new System.Collections.Generic.List <string> ();
#else
StringCollection pieces = new StringCollection();
#endif
pieces.Add(input.Substring(ptr));
do
{
if (count != -1)
{
if (counter-- <= 0)
{
break;
}
}
if (m.Index + m.Length > ptr)
{
throw new SystemException("how");
}
pieces.Add(input.Substring(m.Index + m.Length, ptr - m.Index - m.Length));
pieces.Add(evaluator(m).ToString());
ptr = m.Index;
m = m.NextMatch();
} while (m.Success);
StringBuilder result = new StringBuilder();
input.AppendTo(result, 0, ptr);
for (int i = pieces.Count; i > 0;)
{
result.Append(pieces [--i]);
}
pieces.Clear();
return(new WrappedStringBuilder(result));
}
