private bool GetStreamsForFile(string filePath, out System.IO.Stream contentStream, out System.IO.Stream caseInsensitiveContentStream, out System.IO.Stream tagStream, out System.IO.Stream caseInsensitiveTagStream)
{
contentStream = null;
caseInsensitiveContentStream = null;
tagStream = null;
caseInsensitiveTagStream = null;
System.IO.Stream[] streams = new System.IO.Stream[4];
for (int i = 0; i < 4; ++i)
{
streams[i] = FileStorageProviders.GetFileStream(filePath);
if (streams[i] == null)
{
for (int j = 0; j < i; ++j)
{
if (streams[j] != null)
{
streams[j].Close();
}
}
return(false);
}
}
contentStream = streams[0];
tagStream = streams[1];
caseInsensitiveContentStream = streams[2];
caseInsensitiveTagStream = streams[3];
return(true);
}
/// <summary>
/// Determines a list of search query matches.
/// </summary>
/// <param name="searchType">Type of search.</param>
/// <param name="filePath">File path of the document, which should be searched.</param>
/// <param name="query">Query, whose matches should be returned.</param>
/// <param name="filesAnalyzer">Files analyzer to be used.</param>
/// <param name="contentsAnalyzer">Contents analyzer to be used.</param>
/// <param name="tagsAnalyzer">Tags analyzer to be used.</param>
/// <returns>Collection of search query match occurrences.</returns>
public static ReadOnlyCollection <IOccurrence> DetermineOccurrences(string searchType, string filePath, Query query, Analyzer filesAnalyzer, Analyzer contentsAnalyzer, Analyzer tagsAnalyzer)
{
try
{
string originalText = null;
bool createFragment = true;
switch (searchType)
{
case SearchType.Files:
{
createFragment = false;
originalText = filePath;
}
break;
default:
{
createFragment = true;
// Use file storage provider registry to get read only access to the original file.
using (var fileStream = FileStorageProviders.GetFileStream(filePath))
{
if (fileStream != null)
{
using (var reader = new System.IO.StreamReader(fileStream, Encoding.Default, true))
{
// Read the whole text.
originalText = reader.ReadToEnd();
reader.Close();
}
}
else
{
return(null);
}
}
}
break;
}
return(DetermineOccurrences(searchType, query, originalText, filesAnalyzer, contentsAnalyzer, tagsAnalyzer, createFragment));
}
catch
{
return(null);
}
}