private Company CompanyNames(string input)
{
HTMLSearchResult searcher = new HTMLSearchResult(input); //create a simple searcher object
HTMLSearchResult result; //create a temporary object
result = searcher.GetTagData("tr");
string paperCode = HtmlHelper.CutOffValueFromQuotas(result.TAGAttribute, "id=", '"');
result = searcher.GetTagData("tr").GetTagData("td").GetTagData("a");
string name = result.TAGData;
result = searcher.GetTagData("tr").GetTagData("td", 2);
string id = result.TAGData.Trim();
Company c = new Company(id);
c.Name = name;
c.PaperCode = paperCode;
return c;
}
private HTMLSearchResult Result(string str)
{
HTMLSearchResult ret = new HTMLSearchResult();
ret.sSearchResult = str;
return ret;
}
//This function returns the html between given two search strings
/// <summary>
///Extracts the Nth occurance of specified tag from the current HTML data.
/// <param name="sFileData">The HTML page data, that contains the entire html page</param>
/// <param name="sSearchTag">TAG to search</param>
/// <param name="nOccurance">The Nth occurance to search for</param>
/// <returns>Returns an HTMLSearchResult object containing the tag data.</returns>
/// </summary>
public HTMLSearchResult GetTagData(string sFileData, string sSearchTag, int nOccurance)
{
#region General_Variables_&_Validation
string sTAGData = "";
int nStartPos = -1;
int nEndPos = -1;
TAGStack = new Stack<string>();
int nFoundOccurance = 0; // keep track of the no of instances we found, of the search tag.
int nLen = sFileData.Length;
int nLevel = 0;
bool bFound = false;
TAGStack.Clear();
if (nLen < 1)
{
throw (new ArgumentNullException("File Data cannot be null or blank string"));
}
if (sSearchTag.Length < 1)
{
throw (new ArgumentNullException("Search Tag cannot be null or blank string"));
}
if (nOccurance < 1)
{
throw (new ArgumentOutOfRangeException("The occurance number cannot be less than zero."));
}
//--------------------START THE SEARCH-----------------
#endregion
try
{
nLen = nLen - sSearchTag.Length + 1; //the part where we can compare
for (int i = 0; i < nLen; i++)
{
if (bFound == false)
{
if (sFileData[i] == '<' && sFileData[i + 1] != '/' && sFileData[i + 1] != '!') //found some tag...
{
i++;
int nLastPos = i;
sTAGAttribute = ""; //its class member.
string sTAGName = ReadTillEndOfTag(sFileData, ref i, out sTAGAttribute);
if (string.Compare(sSearchTag, sTAGName, true) == 0)
{
ShowPos(sSearchTag, nLevel, true);
bFound = true;
nStartPos = i + 1;//Need to fix this...
}
}
else if (sFileData[i] == '<' && sFileData[i + 1] == '/') //end tag found
{
string sEndTAG = "";
i += 2;
while (sFileData[i] != '>')
sEndTAG += sFileData[i++];
if (String.Compare(sEndTAG, sSearchTag, true) == 0 && nLevel == 0)
{
throw (new Exception("The Start tag was not found, however its end tag was found"));
}
}
else
{
continue;
}
}//bFound==false
else
{
if (sFileData[i] == '<' && sFileData[i + 1] != '/' && sFileData[i + 1] != '!') //found some tag...
{
i++;
string sTagAttribute = "";
string sTAGName = ReadTillEndOfTag(sFileData, ref i, out sTagAttribute);
if (String.Compare(sTAGName, "script", true) == 0)
{
int k = i + 1;
while (i < sFileData.Length)
{
string substr = sFileData.Substring(k, 9);
if (String.Compare(substr, "</script>", true) == 0)
{
i = k + 9;
break;
}
k++;
}
}
else if (String.Compare(sTAGName, "input", true) != 0 && String.Compare(sTAGName, "link", true) != 0 && String.Compare(sTAGName, "br", true) != 0 && String.Compare(sTAGName, "meta", true) != 0 && String.Compare(sTAGName, "img", true) != 0)
{
TAGStack.Push(sTAGName);
nLevel++;
ShowPos(sTAGName, nLevel, true);
}
}
else if (sFileData[i] == '<' && sFileData[i + 1] == '/') //end tag found
{
int nLastCharPos = i - 1;
string sEndTAG = "";
i += 2;
while (sFileData[i] != '>')
sEndTAG += sFileData[i++];
ShowPos(sEndTAG, nLevel, false);
if (String.Compare(sEndTAG, sSearchTag, true) == 0 && nLevel == 0)
{
nFoundOccurance++;
nEndPos = nLastCharPos;
bFound = false;
if (nFoundOccurance == nOccurance)
{
sTAGData = sFileData.Substring(nStartPos, nEndPos - nStartPos + 1);
//Console.Write("\nSearch String\n======================================" + sTAGData + "\n==============================");
break;
}
//break;
}
else
{
string sPopedTag = TAGStack.Pop();
if (string.Compare(sPopedTag, sEndTAG, true) != 0)
{
//throw (new Exception("Unknown tag end"));
TAGStack.Push(sPopedTag);
nLevel++;
}
nLevel--;
}
}
else
{
continue;
}
}
}
}
catch (Exception e)
{
Console.Write(e.Message);
}
HTMLSearchResult result = new HTMLSearchResult();
result.sSearchResult = sTAGData;
result.sTAGAttribute = sTAGAttribute;
return result;
}
