/// <summary>
/// Initializes a new instance of the Grep class.
/// </summary>
/// <history>
/// [Curtis_Beard] 07/12/2006 Created
/// [Andrew_Radford] 13/08/2009 Added Const. dependency on ISearchSpec, IFileFilterSpec
/// [Curtis_Beard] 05/28/2015 FIX: 69, Created for speed improvements for encoding detection
/// </history>
public Grep(ISearchSpec searchSpec, IFileFilterSpec filterSpec)
{
if (searchSpec.EncodingDetectionOptions == null)
{
throw new ArgumentNullException("ISearchSpec.EncodingDetectionOptions", "EncodingDetectionOptions must not be null");
}
SearchSpec = searchSpec;
FileFilterSpec = filterSpec;
MatchResults = new List<MatchResult>();
if (FileFilterSpec.FilterItems != null)
{
// get first file->minimum hit count filter (should only be 1)
var fileCountFilter = (from f in FileFilterSpec.FilterItems where f.FilterType.Category == FilterType.Categories.File && f.FilterType.SubCategory == FilterType.SubCategories.MinimumHitCount select f).FirstOrDefault();
if (fileCountFilter != null)
{
int.TryParse(fileCountFilter.Value, out userFilterCount);
}
}
if (SearchSpec.EncodingDetectionOptions.DetectFileEncoding && SearchSpec.EncodingDetectionOptions.UseEncodingCache)
{
EncodingCache.Instance.Load(SearchSpec.EncodingDetectionOptions.PerformanceSetting);
}
}
/// <summary>
/// Return true if the file does not pass the fileFilterSpec, i.e should be skipped
/// </summary>
/// <param name="file">FileInfo object of current file</param>
/// <param name="fileFilterSpec">Current file filter settings</param>
/// <param name="filterItem">Item causing filtering, null if none</param>
/// <param name="filterValue">Output of actual filter value</param>
/// <returns>true if file does not pass file filter settings, false otherwise</returns>
/// <history>
/// [Andrew_Radford] 13/08/2009 Created
/// [Curtis_Beard] 03/07/2012 ADD: 3131609, exclusions
/// </history>
private static bool ShouldFilterOut(FileInfo file, IFileFilterSpec fileFilterSpec, out FilterItem filterItem, out string filterValue)
{
filterItem = null;
filterValue = string.Empty;
if (fileFilterSpec.FilterItems != null && fileFilterSpec.FilterItems.Count > 0)
{
var fileFilterItems = from f in fileFilterSpec.FilterItems where f.FilterType.Category == FilterType.Categories.File select f;
foreach (FilterItem item in fileFilterItems)
{
filterValue = string.Empty;
if (item.ShouldExcludeFile(file, out filterValue))
{
filterItem = item;
return true;
}
}
}
return false;
}
/// <summary>
/// Logs a start search message to log file.
/// </summary>
/// <param name="searchSpec">Current search specification</param>
/// <param name="fileFilterSpec">Current file filter specification</param>
/// <history>
/// [Curtis_Beard] 05/15/2015 Initial
/// [Curtis_Beard] 05/26/2015 FIX: 69, add performance setting, cache for file encoding detection
/// </history>
private void LogStartSearchMessage(ISearchSpec searchSpec, IFileFilterSpec fileFilterSpec)
{
StringBuilder searchTextOptions = new StringBuilder();
LogSearchOptionHelper(searchTextOptions, searchSpec.UseRegularExpressions, "regex");
LogSearchOptionHelper(searchTextOptions, searchSpec.UseCaseSensitivity, "case sensitive");
LogSearchOptionHelper(searchTextOptions, searchSpec.UseWholeWordMatching, "whole word");
LogSearchOptionHelper(searchTextOptions, searchSpec.UseNegation, "negation");
LogSearchOptionHelper(searchTextOptions, searchSpec.ReturnOnlyFileNames, "only file names");
LogSearchOptionHelper(searchTextOptions, searchSpec.ContextLines > 0, string.Format("{0} context lines", searchSpec.ContextLines));
if (searchTextOptions.Length > 0)
{
searchTextOptions.Insert(0, "[");
searchTextOptions.Append("]");
}
StringBuilder fileEncoding = new StringBuilder();
if (searchSpec.EncodingDetectionOptions.DetectFileEncoding)
{
fileEncoding.Append("[");
fileEncoding.Append("detect encoding");
fileEncoding.AppendFormat(", performance set at {0}", Enum.GetName(typeof(EncodingOptions.Performance), GeneralSettings.EncodingPerformance).ToLower());
if (searchSpec.EncodingDetectionOptions.UseEncodingCache)
{
fileEncoding.Append(", cache enabled");
}
fileEncoding.Append("]");
}
LogClient.Instance.Logger.Info("Search started in '{0}'{1} against {2}{3} for {4}{5}",
searchSpec.StartFilePaths != null && searchSpec.StartFilePaths.Length > 0 ? string.Join(", ", searchSpec.StartFilePaths) : string.Join(", ", searchSpec.StartDirectories),
searchSpec.SearchInSubfolders ? "[include sub folders]" : "",
fileFilterSpec.FileFilter,
fileEncoding.ToString(),
searchSpec.SearchText,
searchTextOptions.ToString());
}
