/// <summary>
/// Highlight the searched text in the results when using regular expressions
/// </summary>
/// <param name="hit">Hit Object containing results</param>
/// <history>
/// [Curtis_Beard] 04/21/2006 Created
/// [Curtis_Beard] 05/11/2006 FIX: Include context lines if present and prevent system beep
/// [Curtis_Beard] 07/07/2006 FIX: 1512029, highlight whole word and case sensitive matches
/// [Curtis_Beard] 09/28/2006 FIX: use grep object for settings instead of gui items, remove searchText parameter
/// [Curtis_Beard] 05/18/2006 FIX: 1723815, use correct whole word matching regex
/// </history>
private void HighlightTextRegEx(HitObject hit)
{
string _textToSearch = string.Empty;
string _tempString = string.Empty;
int _index = 0;
int _lastPos = 0;
int _counter = 0;
Regex _regEx = new Regex(__Grep.SearchText);
MatchCollection _col;
Match _item;
// Loop through hits and highlight search for text
for (_index = 0; _index < hit.LineCount; _index++)
{
// Retrieve hit text
_textToSearch = hit.RetrieveLine(_index);
// Set default font
txtHits.SelectionFont = new Font("Courier New", 9.75F, FontStyle.Regular);
// 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];
// set the start text
txtHits.SelectionColor = Common.ConvertStringToColor(FileSearch.Core.GeneralSettings.ResultsForeColor);
// txtHits.SelectionBackColor = Common.ConvertStringToColor(FileSearch.Core.GeneralSettings.ResultsBackColor);
// 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))
txtHits.SelectedText = _tempString;
// set the hit text
txtHits.SelectionColor = Common.ConvertStringToColor(FileSearch.Core.GeneralSettings.HighlightForeColor);
// txtHits.SelectionBackColor = Common.ConvertStringToColor(FileSearch.Core.GeneralSettings.HighlightBackColor);
txtHits.SelectedText = _textToSearch.Substring(_item.Index, _item.Length);
// set the end text
txtHits.SelectionColor = Common.ConvertStringToColor(FileSearch.Core.GeneralSettings.ResultsForeColor);
// txtHits.SelectionBackColor = Common.ConvertStringToColor(FileSearch.Core.GeneralSettings.ResultsBackColor);
if (_counter + 1 >= _col.Count)
{
// no more hits so just set the rest
txtHits.SelectedText = _textToSearch.Substring(_item.Index + _item.Length);
_lastPos = _item.Index + _item.Length;
}
else
{
// another hit so just set inbetween
txtHits.SelectedText = _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
txtHits.SelectionColor = Common.ConvertStringToColor(FileSearch.Core.GeneralSettings.ResultsForeColor);
// txtHits.SelectionBackColor = Common.ConvertStringToColor(FileSearch.Core.GeneralSettings.ResultsBackColor);
txtHits.SelectedText = _textToSearch;
}
}
}
/// <summary>
/// Checks to see if the given line is already recognized as a hit.
/// </summary>
/// <param name="line">line to check</param>
/// <param name="hit">HitObject containing all previous hits</param>
/// <returns>True if found, False otherwise</returns>
/// <history>
/// [Curtis_Beard] 07/28/2006 Created
/// </history>
private bool HitExists(string line, HitObject hit)
{
for (int i = 0; i < hit.LineCount; i++)
{
if (hit.RetrieveLine(i).IndexOf(line) > -1)
return true;
}
return false;
}
/// <summary>
/// Highlight the searched text in the results
/// </summary>
/// <param name="hit">Hit Object containing results</param>
/// <history>
/// [Curtis_Beard] 01/27/2005 Created
/// [Curtis_Beard] 04/12/2005 FIX: 1180741, Don't capitalize hit line
/// [Curtis_Beard] 11/18/2005 ADD: custom highlight colors
/// [Curtis_Beard] 12/06/2005 CHG: call WholeWordOnly from Grep class
/// [Curtis_Beard] 04/21/2006 CHG: highlight regular expression searches
/// [Curtis_Beard] 09/28/2006 FIX: use grep object for settings instead of gui items
/// </history>
private void HighlightText(HitObject hit)
{
string _textToSearch = string.Empty;
string _searchText = __Grep.SearchText;
int _index = 0;
string _tempLine = string.Empty;
string _begin = string.Empty;
string _text = string.Empty;
string _end = string.Empty;
int _pos = 0;
bool _highlight = false;
// Clear the contents
txtHits.Text = string.Empty;
txtHits.ForeColor = Common.ConvertStringToColor(FileSearch.Core.GeneralSettings.ResultsForeColor);
txtHits.BackColor = Common.ConvertStringToColor(FileSearch.Core.GeneralSettings.ResultsBackColor);
if (__Grep.UseRegularExpressions)
HighlightTextRegEx(hit);
else
{
// Loop through hits and highlight search for text
for (_index = 0; _index < hit.LineCount; _index++)
{
// Retrieve hit text
_textToSearch = hit.RetrieveLine(_index);
// Set default font
txtHits.SelectionFont = new Font("Courier New", 9.75F, FontStyle.Regular);
_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)
{
do
{
_highlight = false;
//
// retrieve parts of text
_begin = _tempLine.Substring(0, _pos);
_text = _tempLine.Substring(_pos, _searchText.Length);
_end = _tempLine.Substring(_pos + _searchText.Length);
// set default color for starting text
txtHits.SelectionColor = Common.ConvertStringToColor(FileSearch.Core.GeneralSettings.ResultsForeColor);
// txtHits.SelectionBackColor = Common.ConvertStringToColor(FileSearch.Core.GeneralSettings.ResultsBackColor);
txtHits.SelectedText = _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)
{
txtHits.SelectionColor = Common.ConvertStringToColor(FileSearch.Core.GeneralSettings.HighlightForeColor);
// txtHits.SelectionBackColor = Common.ConvertStringToColor(FileSearch.Core.GeneralSettings.HighlightBackColor);
}
txtHits.SelectedText = _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)
{
txtHits.SelectionColor = Common.ConvertStringToColor(FileSearch.Core.GeneralSettings.ResultsForeColor);
// txtHits.SelectionBackColor = Common.ConvertStringToColor(FileSearch.Core.GeneralSettings.ResultsBackColor);
txtHits.SelectedText = _end;
}
}while (_pos > -1);
}
else
{
// set default color, no search text found
txtHits.SelectionColor = Common.ConvertStringToColor(FileSearch.Core.GeneralSettings.ResultsForeColor);
// txtHits.SelectionBackColor = Common.ConvertStringToColor(FileSearch.Core.GeneralSettings.ResultsBackColor);
txtHits.SelectedText = _textToSearch;
}
}
}
}