public RString SubAt(params object[] args)
{
bool iter = false;
RString repl = null;
bool tainted = false;
/*
* if (args != null && args.Length == 1 && ruby.IsBlockGiven)
* {
* iter = true;
* }
* else
*/
if (args != null && args.Length == 2)
{
repl = StringToRString(ruby, args[1]);
tainted = repl.IsTainted;
}
else
{
throw new eArgError(String.Format("wrong # of arguments({0} for 2)",
(args == null) ? 0 : args.Length));
}
RRegexp pat = GetPat(args[0]);
if (pat.Search(ptr, 0, false, IsTainted) >= 0)
{
RThread th = ruby.GetCurrentContext();
RMatchData match = (RMatchData)th.BackRef;
int beg = match.Begin(0);
int len = match.End(0) - beg;
if (iter)
{
/*
* RRegexpClass.matchBusy(match);
* repl = RString.AsRString(ruby, ruby.Yield(match[0]));
* th.BackRef = match; // rescue from yield.
*/
}
else
{
repl = new RString(ruby, match.Sub(repl.ToString(), ptr));
}
if (repl.IsTainted)
{
tainted = true;
}
StringBuilder sb = new StringBuilder(ptr);
sb.Remove(beg, len);
sb.Insert(beg, repl.ptr, 1);
ptr = sb.ToString();
if (tainted)
{
Taint();
}
return(this);
}
return(null);
}
public RString GsubAt(params object[] args)
{
bool iter = false;
RString repl = null;
bool tainted = false;
/*
* if (args != null && args.Length == 1 && ruby.IsBlockGiven)
* {
* iter = true;
* }
* else
*/
if (args != null && args.Length == 2)
{
repl = StringToRString(ruby, args[1]);
tainted = repl.IsTainted;
}
else
{
throw new eArgError(String.Format("wrong # of arguments({0} for 2)",
(args == null) ? 0 : args.Length));
}
RRegexp pat = GetPat(args[0]);
int beg = pat.Search(ptr, 0, false, IsTainted);
if (beg < 0)
{
return(null);
}
StringBuilder sb = new StringBuilder();
RThread th = ruby.GetCurrentContext();
int offset = 0;
RMatchData match = null;
while (beg >= 0)
{
string val;
match = (RMatchData)th.BackRef;
beg = match.Begin(0);
int len = match.End(0) - beg;
/*
* if (iter)
* {
*
* RRegexpClass.matchBusy(match);
* repl = RString.AsRString(ruby, ruby.Yield(match[0]));
* th.BackRef = match; // rescue from yield.
* if (repl.IsTainted) tainted = true;
* val = repl.ToString();
*
* }
* else
*/
{
val = match.Sub(repl.ToString(), ptr);
}
if (beg > offset)
{
sb.Append(ptr, offset, beg - offset);
}
sb.Append(val);
if (len == 0)
{
if (ptr.Length > match.End(0))
{
sb.Append(ptr, match.End(0), 1);
}
offset = beg + 1;
}
else
{
offset = beg + len;
}
if (offset > ptr.Length)
{
break;
}
beg = pat.Search(ptr, offset, false, IsTainted);
}
if (ptr.Length > offset)
{
sb.Append(ptr, offset, ptr.Length - offset);
}
th.BackRef = match; // rescue from yield.
ptr = sb.ToString();
if (tainted)
{
Taint();
}
return(this);
}