public interface IFieldExtractor

Public Interface IFieldExtractor

public interface class IFieldExtractor

type IFieldExtractor =  interface end

public class LogExtractor : IFieldExtractor
{
    private readonly string[] extensions = new string[] { ".log" };

    public string[] Extensions
    {
        get { return extensions; }
    }

    public DocumentField[] GetFields(string filePath)
    {
        FileInfo fileInfo = new FileInfo(filePath);
        DocumentField[] fields = new DocumentField[]
        {
            new DocumentField("FileName", fileInfo.FullName),
            new DocumentField("CreationDate", fileInfo.CreationTime.ToString(CultureInfo.InvariantCulture)),
            new DocumentField("Content", ExtractContent(filePath)),
        };
        return fields;
    }

    private string ExtractContent(string filePath)
    {
        StringBuilder result = new StringBuilder();
        using (StreamReader streamReader = File.OpenText(filePath))
        {
            string line = streamReader.ReadLine();
            string processedLine = line.Remove(0, 12);
            result.AppendLine(processedLine);
        }
        return result.ToString();
    }
}

string indexFolder = @"c:\MyIndex\"; // Specify path to the index folder
string documentsFolder = @"c:\MyDocuments\"; // Specify path to a folder containing documents to search

Index index = new Index(indexFolder); // Creating or loading an index

index.IndexSettings.CustomExtractors.Add(new LogExtractor()); // Adding custom text extractor to index settings

index.Add(documentsFolder); // Indexing documents from the specified folder