/// <summary>
/// Returns the given line with the search text highlighted.
/// </summary>
/// <param name="line">Line to check</param>
/// <param name="grep">Grep Object containing options</param>
/// <returns>Line with search text highlighted</returns>
/// <history>
/// [Curtis_Beard] 09/05/2006 Created
/// </history>
public static string GetHighlightLine(string line, Grep grep)
{
string newLine;
if (grep.UseRegularExpressions)
newLine = HighlightRegEx(line, grep);
else
newLine = HighlightNormal(line, grep);
return newLine + "<br />";
}
/// <summary>
/// Returns the given line with the search text highlighted.
/// </summary>
/// <param name="line">Line to check</param>
/// <param name="grep">Grep Object containing options</param>
/// <returns>Line with search text highlighted</returns>
/// <history>
/// [Curtis_Beard] 09/05/2006 Created
/// [Curtis_Beard] 05/18/2006 FIX: 1723815, use correct whole word matching regex
/// </history>
private static string HighlightRegEx(string line, Grep grep)
{
string _textToSearch = string.Empty;
string _tempstring = string.Empty;
int _lastPos = 0;
int _counter = 0;
Regex _regEx = new Regex(grep.SearchText);
MatchCollection _col;
Match _item;
string _newLine = string.Empty;
//Retrieve hit text
_textToSearch = line;
// find all reg ex matches in line
if (grep.UseCaseSensitivity && grep.UseWholeWordMatching)
{
_regEx = new Regex("\\b" + grep.SearchText + "\\b");
_col = _regEx.Matches(_textToSearch);
}
else if (grep.UseCaseSensitivity)
{
_regEx = new Regex(grep.SearchText);
_col = _regEx.Matches(_textToSearch);
}
else if (grep.UseWholeWordMatching)
{
_regEx = new Regex("\\b" + grep.SearchText + "\\b", RegexOptions.IgnoreCase);
_col = _regEx.Matches(_textToSearch);
}
else
{
_regEx = new Regex(grep.SearchText, RegexOptions.IgnoreCase);
_col = _regEx.Matches(_textToSearch);
}
// loop through the matches
_lastPos = 0;
for (_counter = 0; _counter < _col.Count; _counter++)
{
_item = _col[_counter];
// check for empty string to prevent assigning nothing to selection text preventing
// a system beep
_tempstring = _textToSearch.Substring(_lastPos, _item.Index - _lastPos);
if (!_tempstring.Equals(string.Empty))
_newLine += _tempstring;
// set the hit text
_newLine += string.Format("<span class=\"searchtext\">{0}</span>", _textToSearch.Substring(_item.Index, _item.Length));
// set the end text
if (_counter + 1 >= _col.Count)
{
// no more hits so just set the rest
_newLine += _textToSearch.Substring(_item.Index + _item.Length);
_lastPos = _item.Index + _item.Length;
}
else
{
// another hit so just set inbetween
_newLine += _textToSearch.Substring(_item.Index + _item.Length, _col[_counter + 1].Index - (_item.Index + _item.Length));
_lastPos = _col[_counter + 1].Index;
}
}
if (_col.Count == 0)
{
// no match, just a context line
_newLine += _textToSearch;
}
return _newLine;
}
/// <summary>
/// Replaces all the search option holders in the given text.
/// </summary>
/// <param name="text">Text containing holders</param>
/// <param name="grep">Grep Object containing options</param>
/// <returns>Text with holders replaced</returns>
/// <history>
/// [Curtis_Beard] 09/05/2006 Created
/// </history>
public static string ReplaceSearchOptions(string text, Grep grep)
{
text = text.Replace("%%filetypes%%", "File Types: " + grep.FileFilter);
text = text.Replace("%%regex%%", "Regular Expressions: " + grep.UseRegularExpressions.ToString());
text = text.Replace("%%casesen%%", "Case Sensitive: " + grep.UseCaseSensitivity.ToString());
text = text.Replace("%%wholeword%%", "Whole Word: " + grep.UseWholeWordMatching.ToString());
text = text.Replace("%%recurse%%", "Recurse: " + grep.UseRecursion.ToString());
text = text.Replace("%%filenameonly%%", "Show File Names Only: " + grep.ReturnOnlyFileNames.ToString());
text = text.Replace("%%negation%%", "Negation: " + grep.UseNegation.ToString());
text = text.Replace("%%linenumbers%%", "Line Numbers: " + grep.IncludeLineNumbers.ToString());
text = text.Replace("%%contextlines%%", "Context Lines: " + grep.ContextLines.ToString());
text = text.Replace("%%totalfiles%%", grep.Greps.Count.ToString());
text = text.Replace("%%searchterm%%", grep.SearchText);
if (grep.UseNegation)
text = text.Replace("%%usenegation%%", "not ");
else
text = text.Replace("%%usenegation%%", string.Empty);
return text;
}
/// <summary>
/// Returns the given line with the search text highlighted.
/// </summary>
/// <param name="line">Line to check</param>
/// <param name="grep">Grep Object containing options</param>
/// <returns>Line with search text highlighted</returns>
/// <history>
/// [Curtis_Beard] 09/05/2006 Created
/// </history>
private static string HighlightNormal(string line, Grep grep)
{
string _textToSearch = string.Empty;
string _searchText = grep.SearchText;
string _tempLine = string.Empty;
string _begin = string.Empty;
string _text = string.Empty;
string _end = string.Empty;
int _pos = 0;
bool _highlight = false;
string _newLine = string.Empty;
// Retrieve hit text
_textToSearch = line;
_tempLine = _textToSearch;
// attempt to locate the text in the line
if (grep.UseCaseSensitivity)
_pos = _tempLine.IndexOf(_searchText);
else
_pos = _tempLine.ToLower().IndexOf(_searchText.ToLower());
if (_pos > -1)
{
while (_pos > -1)
{
_highlight = false;
//retrieve parts of text
_begin = _tempLine.Substring(0, _pos);
_text = _tempLine.Substring(_pos, _searchText.Length);
_end = _tempLine.Substring(_pos + _searchText.Length);
_newLine += _begin;
// do a check to see if begin and end are valid for wholeword searches
if (grep.UseWholeWordMatching)
_highlight = Grep.WholeWordOnly(_begin, _end);
else
_highlight = true;
// set highlight color for searched text
if (_highlight)
_newLine += string.Format("<span class=\"searchtext\">{0}</span>", _text);
else
_newLine += _text;
// Check remaining string for other hits in same line
if (grep.UseCaseSensitivity)
_pos = _end.IndexOf(_searchText);
else
_pos = _end.ToLower().IndexOf(_searchText.ToLower());
// set default color for end, if no more hits in line
_tempLine = _end;
if (_pos < 0)
_newLine += _end;
}
}
else
_newLine += _textToSearch;
return _newLine;
}
/// <summary>
/// Start the searching
/// </summary>
/// <history>
/// [Curtis_Beard] 10/17/2005 Created
/// [Curtis_Beard] 07/03/2006 FIX: 1516775, Remove trim on the search expression
/// [Curtis_Beard] 07/12/2006 CHG: moved thread actions to grep class
/// [Curtis_Beard] 11/22/2006 CHG: Remove use of browse in combobox
/// [Curtis_Beard] 08/07/2007 ADD: 1741735, better search error handling
/// [Curtis_Beard] 08/21/2007 FIX: 1778467, make sure file pattern is correct if a '\' is present
/// </history>
private void StartSearch()
{
string _path;
string _fileName;
int _index;
string _expression;
try
{
_fileName = cboFileName.Text;
_path = cboFilePath.Text.Trim();
_expression = cboSearchForText.Text;
// update combo selections
AddComboSelection(cboSearchForText, _expression);
AddComboSelection(cboFileName, _fileName);
AddComboSelection(cboFilePath, _path);
// Ensure that there is a backslash.
if (!_path.EndsWith(System.IO.Path.DirectorySeparatorChar.ToString()))
_path += System.IO.Path.DirectorySeparatorChar.ToString();
// update path and fileName if fileName has a path in it
int slashPos = _fileName.LastIndexOf(System.IO.Path.DirectorySeparatorChar.ToString());
if (slashPos > -1)
{
// fileName has a slash, so append the directory and get the file filter
_path += _fileName.Substring(0, slashPos);
_fileName = _fileName.Substring(slashPos + 1);
}
// disable gui
SetSearchState(false);
// reset display
SetStatusBarMessage(string.Empty);
ClearItems();
txtHits.Clear();
// Clear search errors
__ErrorCollection.Clear();
// begin searching
__Grep = new Grep();
SetGrepOptions();
__Grep.StartDirectory = _path;
__Grep.FileFilter = _fileName;
__Grep.SearchText = _expression;
// attach events
__Grep.FileHit += new libFileSearch.Grep.FileHitHandler(ReceiveFileHit);
__Grep.LineHit += new libFileSearch.Grep.LineHitHandler(ReceiveLineHit);
__Grep.SearchCancel += new libFileSearch.Grep.SearchCancelHandler(ReceiveSearchCancel);
__Grep.SearchComplete += new libFileSearch.Grep.SearchCompleteHandler(ReceiveSearchComplete);
__Grep.SearchError += new libFileSearch.Grep.SearchErrorHandler(ReceiveSearchError);
__Grep.SearchingFile += new libFileSearch.Grep.SearchingFileHandler(ReceiveSearchingFile);
__Grep.BeginExecute();
}
catch (Exception ex)
{
__ErrorCollection.Add(ex.Message);
DisplaySearchErrors();
}
}
