// man what a friggin mess just to deal with ANY
// kind of mangled input and spit out some kinda lines
// uhmm...
static XString FilterLines(ref object scratch, XString buffer)
{
//*data = (struct my_scratch_data*)scratch[0];
my_scratch_data data = scratch as my_scratch_data;
int total_length;
int n;
int thisskip;
if (data == null)
{
data = new my_scratch_data();
data.skip = 0;
data.linebuf = null;
data.lastread = false;
scratch = data;
}
thisskip = data.skip; // skip N characters in first buffer.
if (buffer != null)
{
data.lastread = false;
data.linebuf.Add(buffer);
}
else if (buffer == null)
{
if (data.lastread)
{
XString final = null;
if (data.linebuf != null)
{
final = new XString(data.linebuf.firstseg.Text.Substring(data.skip));
}
data.linebuf = null;
scratch = null;
#if LOG_LINES_READ
Log.log("Returning buffer [%s]", GetText(final));
#endif
return(final);
}
}
buffer = data.linebuf;
total_length = 0;
while (buffer != null)
{
// full new buffer, which may or may not add to prior segments...
int end = 0;
int length = buffer.firstseg.Text.Length;
String chardata = buffer.firstseg.Text;
//Log.log( "Considering buffer %s" , GetText( buffer ) + data.skip );
if ((length - thisskip) == 0)
{
//buffer
buffer.Remove(buffer.firstseg);
}
else
{
for (n = thisskip; n < length; n++)
{
if (chardata[n] == '\n' ||
chardata[n] == '\r')
{
if (chardata[n] == '\n')
{
end = 1;
n++; // include this character.
//Log.log( "BLANK LINE - CONSUMED" );
break;
}
if (end > 0) // \r\r is two lines too
{
break;
}
end = 1;
}
else if (end > 0)
{
// any other character... after a \r.. don't include the character.
break;
}
}
}
total_length += n - thisskip;
if (end > 0)
{
// new character, trim at -1 from here...
result = SegCreate(total_length);
int ofs;
buffer = data.linebuf;
thisskip = data.skip;
n = thisskip;
ofs = 0;
while (ofs < total_length)
{
int len = GetTextSize(buffer);
if (len > (len - thisskip))
{
len = len - thisskip;
}
if (len > (total_length - ofs))
{
len = total_length - ofs;
}
MemCpy(GetText(result) + ofs
, GetText(buffer) + thisskip
, sizeof(TEXTCHAR) * len);
ofs += len;
n += len;
if (ofs < total_length)
{
n = 0;
thisskip = 0;
buffer = NEXTLINE(buffer);
}
}
if (buffer)
{
data.skip = n;
LineRelease(SegBreak(buffer));
data.linebuf = buffer;
}
else
{
data.skip = 0;
}
GetText(result)[total_length] = 0;
//Log.log( "Considering buffer %s", GetText( result ) );
#ifdef LOG_LINES_READ
Log.log("Returning buffer [%s]", GetText(result));
#endif
return(result);
}
else
{
//Log.log( "Had no end within the buffer, waiting for another..." );
}
thisskip = 0; // no more skips.
buffer = NEXTLINE(buffer);
}
data.lastread = TRUE;
return(NULL);
}