gistfile1.cs

using System;
using System.Collections.Generic;
using System.IO;
using DocSearch.Util;

namespace DocSearch.Query.Impl
{
    public class QueryInterpreter : IQueryInterpreter
    {
        private IEnumerable<string> _terms;

        private readonly List<FileInfo> _textFiles;

        public QueryInterpreter(TextFileManager fileManager)
        {
            if(fileManager == null)
                throw new ArgumentNullException("fileManager");

            _textFiles = fileManager.TextFiles;
        }

        public QueryResponse Query(string query)
        {
            _terms = query.Split(new[] { " and " }, StringSplitOptions.None);

            List<ResultSet> resultSets = new List<ResultSet>();
            QueryResponse response = new QueryResponse(resultSets);

            foreach(var file in _textFiles)
            {
                // Which file is this
                int currentFile = 1;
                // What is the file name
                TextReader reader = new StreamReader(file.FullName);

                // Split the file contents into sentences
                IEnumerable<string> sentences = reader.ReadToEnd().Split(new[]{ ". " }, StringSplitOptions.None);

                // For each term in the _terms need finding
                // First we search apple
                // Then we search banana
                foreach (string term in _terms)
                {
                    ResultSet resultSet = new ResultSet();
                    resultSet.TextFile = file.FullName;
                    resultSet.Term = term;
                    // We are searching each sentence individually for the word apple

                    int currentSentence = 1; // This increments per sentence only
                    int currentPosition = 0; // This always increments from 0 to the last increment of a word in a collection of strings

                    foreach (string sentence in sentences)
                    {
                        foreach(string word in sentence.Split(new string[] { " " }, StringSplitOptions.None))
                        {
                            // if apple == apple found in sentence
                            if (Sanitize(word) == term)
                            {
                                // MATCH 1
                                resultSet.SentencePosition.Add(currentPosition, currentSentence);
                            }
                            currentPosition++;
                        }
                        currentSentence++;
                    }

                    // Add this terms resultSet information
                    response.ResultSets.Add(resultSet);
                }
                // Each term search has been copleted
            }

            // return the response container

            return response;
        }

        private string Sanitize(string s)
        {
            // This function will need tweaking
            return s.Replace(",", "");
        }
    }
}