private static ParsedTable parseHtmlAsTable(string mainString)
{
//At this point, we know that the entire "mainString" occurred immediately within
//"<table> and "</endtable>"
//therefore, we have to parse it into rows and columns.
//this function will parse it into rows
ParsedTable table = new ParsedTable();
int searchStartIndex = 0;
while (true)
{
int trsi = -1;
int trei = -1;
int i1 = mainString.IndexOf("<tr>", searchStartIndex, StringComparison.OrdinalIgnoreCase);
int i2 = mainString.IndexOf("<tr ", searchStartIndex, StringComparison.OrdinalIgnoreCase);
if (i1 == -1 && i2 == -1)
{
break;
}
if (i1 == -1)
{
trsi = i2;
}
else if (i2 == -1)
{
trsi = i1;
}
else
{
trsi = Math.Min(i1, i2);
}
int openingTableTagEnd = mainString.IndexOf(">", trsi);
trei = findMatchingEndTag(mainString, "tr", trsi);
int rowIndex = table.addRow();
string subString = mainString.Substring(openingTableTagEnd + 1, trei - openingTableTagEnd - 1).Trim(' ', '\t', '\r', '\n');
List <object> objectsInRow = parseHtmlAsTableRow(subString);
foreach (object o in objectsInRow)
{
table.addColumn(rowIndex, o);
}
searchStartIndex = trei + "</tr>".Length;
}
return(table);
}
public static Object ParseHtmlIntoTables(string mainString, bool encapsulateInTable)
{
List<object> objectsOnPage = new List<object>();
if (string.IsNullOrEmpty(mainString))
return null;
mainString = mainString.Trim(' ', '\t', '\r', '\n');
int searchStartIndex = 0;
ParsedTable table = null;
while (true)
{
int tsi = -1, tei = -1;
if (string.IsNullOrEmpty(mainString))
break;
int i1 = mainString.IndexOf("<table>", searchStartIndex, StringComparison.OrdinalIgnoreCase);
int i2 = mainString.IndexOf("<table ", searchStartIndex, StringComparison.OrdinalIgnoreCase);
if (i1 == -1 && i2 == -1)
{
break;
}
if (i1 == -1)
tsi = i2;
else if (i2 == -1)
tsi = i1;
else
tsi = Math.Min(i1, i2);
int openingTableTagEnd = mainString.IndexOf(">", tsi);
tei = findMatchingEndTag(mainString, "table", tsi);
if (tsi > searchStartIndex)
{
string subTextString = mainString.Substring(searchStartIndex, tsi - searchStartIndex).Trim(' ', '\t', '\r', '\n');
objectsOnPage.Add(subTextString);
Debug.Assert(subTextString.IndexOf("</td>", StringComparison.OrdinalIgnoreCase) == -1);
Debug.Assert(subTextString.IndexOf("</tr>", StringComparison.OrdinalIgnoreCase) == -1);
Debug.Assert(subTextString.IndexOf("</table>", StringComparison.OrdinalIgnoreCase) == -1);
}
string subString = mainString.Substring(openingTableTagEnd + 1, tei - openingTableTagEnd - 1).Trim(' ', '\t', '\r', '\n');
table = parseHtmlAsTable(subString);
objectsOnPage.Add(table);
table = null;
searchStartIndex = tei + "</table>".Length;
}
string endString = mainString.Substring(searchStartIndex).Trim(' ', '\t', '\r', '\n');
if (!string.IsNullOrEmpty(endString))
{
objectsOnPage.Add(endString);
Debug.Assert(endString.IndexOf("</td>", StringComparison.OrdinalIgnoreCase) == -1);
Debug.Assert(endString.IndexOf("</tr>", StringComparison.OrdinalIgnoreCase) == -1);
Debug.Assert(endString.IndexOf("</table>", StringComparison.OrdinalIgnoreCase) == -1);
}
if (objectsOnPage.Count == 0)
return null;
if (objectsOnPage.Count == 1)
{
object o = objectsOnPage[0];
if (o is ParsedTable)
return o;
if (!encapsulateInTable)
return o;
table = new ParsedTable();
table.addRow();
table.addColumn(0, o);
return table;
}
else
{
table = new ParsedTable();
table.addRow();
foreach (object o in objectsOnPage)
{
table.addColumn(0, o);
}
return table;
}
}