public void Optimize()
{
int num = 0;
int num2 = 0;
if (this.fieldList != null)
{
DATAFIELD datafield;
for (num = 0; num < this.fieldList.Count; num++)
{
datafield = (DATAFIELD)this.fieldList[num];
if (datafield.type == DataType.Link_Follow)
{
num2++;
}
if (datafield.type == DataType.Link_Back)
{
num2--;
}
}
for (num = 0; num < num2; num++)
{
this.AddDataField(DataType.Link_Back, null, null, false, null, "");
}
for (num = 0; num < this.fieldList.Count; num++)
{
datafield = (DATAFIELD)this.fieldList[num];
if ((datafield.type == DataType.Link_NextPage) && (num != (this.fieldList.Count - 1)))
{
this.fieldList.Add(datafield);
this.fieldList.Remove(datafield);
break;
}
}
num = 0;
while (num < this.fieldList.Count)
{
datafield = (DATAFIELD)this.fieldList[num];
if ((datafield.type == DataType.Link_Follow) && ((num + 1) < this.fieldList.Count))
{
DATAFIELD datafield2 = (DATAFIELD)this.fieldList[num + 1];
if (datafield2.type == DataType.Link_Back)
{
this.fieldList.Remove(datafield);
this.fieldList.Remove(datafield2);
continue;
}
}
num++;
}
}
}
public void DeleteDataField(string fieldName)
{
for (int i = 0; i < this.fieldList.Count; i++)
{
DATAFIELD datafield = (DATAFIELD)this.fieldList[i];
if (datafield.name == fieldName)
{
this.fieldList.Remove(datafield);
if (this.insertMode && (this.insertIndex >= i))
{
this.insertIndex--;
return;
}
break;
}
}
}
public bool AddDataField(DataType type, string fieldName, string xpath, bool isPattern, string heading, string regex = "")
{
bool flag = true;
bool flag2 = false;
if (this.fieldList == null)
{
this.fieldList = new ArrayList();
}
if (((((type == DataType.Text) || (type == DataType.Text_Near_Heading)) || ((type == DataType.Image) || (type == DataType.HTML))) || ((type == DataType.File) || (type == DataType.Url))) && (fieldName != null))
{
foreach (DATAFIELD datafield in this.fieldList)
{
if (datafield.name == fieldName)
{
flag = false;
break;
}
}
if (!flag)
{
return(flag);
}
}
if (type == DataType.Link_NextPage)
{
for (int i = 0; i < this.fieldList.Count; i++)
{
DATAFIELD datafield2 = (DATAFIELD)this.fieldList[i];
if (datafield2.type == DataType.Link_NextPage)
{
datafield2.xpath = xpath;
datafield2.name = fieldName;
this.fieldList[i] = datafield2;
flag2 = true;
}
}
}
if (type == DataType.Link_Follow)
{
bool flag3 = false;
for (int j = 0; j < this.fieldList.Count; j++)
{
DATAFIELD datafield3 = (DATAFIELD)this.fieldList[j];
if ((datafield3.type == DataType.Link_Follow) && (datafield3.xpath == xpath))
{
flag3 = true;
}
if (flag3 && (datafield3.type == DataType.Link_Back))
{
this.insertMode = true;
this.insertIndex = j;
flag2 = true;
break;
}
}
}
if (this.insertMode && (type == DataType.Link_Back))
{
this.insertMode = false;
flag2 = true;
}
if (flag && !flag2)
{
DATAFIELD datafield4;
datafield4.type = type;
datafield4.name = fieldName;
datafield4.xpath = xpath;
datafield4.pattern = isPattern;
datafield4.heading = heading;
datafield4.regex = regex;
if (this.insertMode)
{
this.fieldList.Insert(this.insertIndex, datafield4);
return(flag);
}
this.fieldList.Add(datafield4);
}
return(flag);
}