//adds scanned words to list
private static List <string> AddTextToList(string myTextInput)
{
List <string> fileWords = new List <string>();
string myText = myTextInput;
myText.Replace(Environment.NewLine, " ");
myText = StopWords.RemoveStopwords(myText); //removes stopwords
// remove numbers, punctuation & special characters from each line and make lower case
String aText = Regex.Replace(myText, "[^a-zA-Z\\s+]", ""); //replace punctuations and numbers with blank space
aText = aText.ToLower();
String[] words = aText.Split(' '); //Splitting a line into an array of words
foreach (string word in words)
{
if (word != "")
{
fileWords.Add(word);
}
}
return(fileWords);
}
private void searchButton_Click(object sender, EventArgs e)
{
PorterStemmer stemmer = new PorterStemmer(); // instantiate a PorterStemmer object to stem words from files
string stemmedWord = stemmer.StemWord(searchWord.Text); //stems the word before searching
fileList.Text = " ";
filesFound.Text = " ";
List <string> files = new List <string>();
bool found = false;
if (thread.IsAlive)
{
MessageBox.Show("The index is currently busy. Please try again later"); //message shown if index building is in progress
}
else
{
foreach (var item in index.internalIndex)
{
string newItem = StopWords.RemoveStopwords(item.Key);
if (newItem == stemmedWord)
{
found = true;
filesFound.Text = item.Value.Count.ToString();
foreach (var folderName in item.Value.Keys)
{
files.Add(folderName);
}
}
}
foreach (var file in files)
{
fileList.Text += file + "\r\n";
}
if (!found)
{
filesFound.Text = "0";
fileList.Text = "No results found";
}
}
}
