Replace CsvIndexer with CsvFieldIndexer.

CsvLib/CsvIndexer.cs

@@ -1,133 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Text;
-
-namespace CsvLib
-{
-    public class CsvIndexer
-    {
-        private bool _insideString;
-
-        private readonly char _separator;
-        private readonly char _quoteChar;
-        private readonly char _escapeChar;
-
-        public CsvIndexer(char separator = ',', char quoteChar = '"', char escapeChar = '\\')
-        {
-            _separator = separator;
-            _quoteChar = quoteChar;
-            _escapeChar = escapeChar;
-        }
-
-        private List<long> _index = new();
-
-        public List<long> Index { get { return _index; } }
-
-        private void DummyParser(string line)
-        {
-            for (int i = 0; i < line.Length; i++)
-            {
-                char c = line[i];
-                if (c == _separator && _insideString == false)
-                {
-                    continue;
-                }
-                if (c == _quoteChar && _insideString == false)
-                {
-                    _insideString = true;
-                    continue;
-                }
-                if (c == _quoteChar && _insideString)
-                {
-                    _insideString = false;
-                    continue;
-                }
-                if (c == _escapeChar && _insideString)
-                {
-                    i++;
-                }
-            }
-        }
-
-        public void GenerateIndex(string file)
-        {
-            _insideString = false;
-            _index.Clear();
-            _index.Add(0);
-            using FileStream stream = new(file, FileMode.Open);
-            using StreamReader streamReader = new(stream, Encoding.Default, true, 4096);
-            using TrackingTextReader reader = new(streamReader);
-            
-            string currentLine;
-            while ((currentLine = reader.ReadLine()) != null)
-            {
-                DummyParser(currentLine);
-                if (_insideString == false)
-                {
-                    _index.Add(reader.Position);
-                }
-            }
-        }
-
-        private void Index_SaveFile(string indexFile)
-        {
-            if (indexFile == null) { return; }
-            if (File.Exists(indexFile))
-            {
-                File.Delete(indexFile);
-            }
-            Stream streamOut = File.Open(indexFile, FileMode.Create);
-            using (BinaryWriter binWriter = new(streamOut))
-            {
-                binWriter.Write(_index.Count);
-                for (int i = 0; i < _index.Count; i++)
-                {
-                    binWriter.Write(_index[i]);
-                }
-            }
-            streamOut.Close();
-        }
-
-        private static List<long> Index_LoadFile(string indexFile)
-        {
-            List<long> tempIndex = new();
-
-            Stream streamIn = File.Open(indexFile, FileMode.Open);
-            using (BinaryReader binReader = new(streamIn))
-            {
-                int numRegs = binReader.ReadInt32();
-                for (int i = 0; i < numRegs; i++)
-                {
-                    long value = binReader.ReadInt64();
-                    tempIndex.Add(value);
-                }
-            }
-            streamIn.Close();
-            return tempIndex;
-        }
-
-        public void LoadIndexOfFile(string file)
-        {
-            DateTime dtFile = File.GetCreationTime(file);
-            string indexFile = $"{file}.idx";
-            if (File.Exists(indexFile) && File.GetCreationTime(indexFile) > dtFile)
-            {
-                _index = Index_LoadFile(indexFile);
-            }
-            else
-            {
-                // Generate index
-                DateTime dtNow = DateTime.UtcNow;
-                GenerateIndex(file);
-                TimeSpan tsGenIndex = DateTime.UtcNow - dtNow;
-
-                // Save Index if expensive generation
-                if (tsGenIndex.TotalSeconds > 2)
-                {
-                    Index_SaveFile(indexFile);
-                }
-            }
-        }
-    }
-}

CsvLib/TrackingTextReader.cs

@@ -1,46 +0,0 @@
-using System.IO;
-using System.Text;
-
-namespace CsvLib
-{
-    public class TrackingTextReader : TextReader
-    {
-        private readonly TextReader _baseReader;
-        private int _position;
-        private readonly Encoding _currentEncoding = Encoding.Default;
-
-        public TrackingTextReader(TextReader baseReader)
-        {
-            _baseReader = baseReader;
-            if (baseReader is StreamReader streamReader)
-            {
-                _currentEncoding = streamReader.CurrentEncoding;
-            }
-        }
-
-        public override int Read()
-        {
-            int read = _baseReader.Read();
-            if (read > 127)
-            {
-                int count = _currentEncoding.GetByteCount(((char)read).ToString());
-                _position += count;
-            }
-            else
-            {
-                _position++;
-            }
-            return read;
-        }
-
-        public override int Peek()
-        {
-            return _baseReader.Peek();
-        }
-
-        public int Position
-        {
-            get { return _position; }
-        }
-    }
-}

CsvView/MainWindow.axaml.cs

@@ -74,7 +74,7 @@ public partial class MainWindow : Window
         _loadedFile = fileName;
         TxtFileName.Text = fileName;
 
-        CsvIndexer csvIndexer = new();
+        CsvFieldIndexer csvIndexer = new();
         csvIndexer.LoadIndexOfFile(_loadedFile);
         _index = csvIndexer.Index;
         _totalRegs = _index.Count - 1;