102 lines
2.8 KiB
C#
102 lines
2.8 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Text;
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using System.IO;
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using System.Net;
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using System.Net.Http;
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using System.Threading.Tasks;
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namespace SharedLibraryCore
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{
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public class RemoteFile : IFile
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{
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string Location;
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string[] FileCache = new string[0];
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public RemoteFile(string location) : base(string.Empty)
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{
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Location = location;
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}
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private void Retrieve()
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{
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using (var cl = new HttpClient())
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FileCache = cl.GetStringAsync(Location).Result.Split(Environment.NewLine.ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
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}
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public override long Length()
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{
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Retrieve();
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return FileCache[0].Length;
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}
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}
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public class IFile
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{
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public IFile(String fileName)
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{
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if (fileName != string.Empty)
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{
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Name = fileName;
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Handle = new StreamReader(new FileStream(fileName, FileMode.Open, FileAccess.Read, FileShare.ReadWrite, 4096, true), Utilities.EncodingType);
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sze = Handle.BaseStream.Length;
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}
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}
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public virtual long Length()
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{
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sze = Handle.BaseStream.Length;
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return sze;
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}
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public void Close()
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{
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Handle?.Close();
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}
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public String[] ReadAllLines()
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{
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return Handle?.ReadToEnd().Split(new char[] { '\n' }, StringSplitOptions.RemoveEmptyEntries);
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}
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public String GetText()
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{
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return Handle?.ReadToEnd();
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}
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public virtual async Task<String[]> Tail(int lineCount)
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{
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var buffer = new List<string>(lineCount);
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string line;
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for (int i = 0; i < lineCount; i++)
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{
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line = await Handle.ReadLineAsync();
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if (line == null) return buffer.ToArray();
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buffer.Add(line);
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}
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int lastLine = lineCount - 1; //The index of the last line read from the buffer. Everything > this index was read earlier than everything <= this indes
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while (null != (line = await Handle.ReadLineAsync()))
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{
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lastLine++;
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if (lastLine == lineCount) lastLine = 0;
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buffer[lastLine] = line;
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}
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if (lastLine == lineCount - 1) return buffer.ToArray();
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var retVal = new string[lineCount];
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buffer.CopyTo(lastLine + 1, retVal, 0, lineCount - lastLine - 1);
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buffer.CopyTo(0, retVal, lineCount - lastLine - 1, lastLine + 1);
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return retVal;
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}
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//END
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private long sze;
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private String Name;
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private StreamReader Handle;
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}
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}
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