94 lines
2.8 KiB
C#
94 lines
2.8 KiB
C#
using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Diagnostics;
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using System.Threading;
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public static class TextLineRemover
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{
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public static void RemoveTextLines(IList<string> linesToRemove, string filename, string tempFilename)
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{
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// Initial values
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int lineNumber = 0;
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int linesRemoved = 0;
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DateTime startTime = DateTime.Now;
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// Read file
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using (var sr = new StreamReader(filename))
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{
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// Write new file
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using (var sw = new StreamWriter(tempFilename))
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{
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// Read lines
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string line;
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while ((line = sr.ReadLine()) != null)
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{
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lineNumber++;
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// Look for text to remove
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if (!ContainsString(line, linesToRemove))
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{
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// Keep lines that does not match
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sw.WriteLine(line);
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}
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else
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{
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// Ignore lines that DO match
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linesRemoved++;
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InvokeOnRemovedLine(new RemovedLineArgs { RemovedLine = line, RemovedLineNumber = lineNumber});
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}
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}
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}
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}
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// Delete original file
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File.Delete(filename);
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// ... and put the temp file in its place.
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File.Move(tempFilename, filename);
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// Final calculations
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DateTime endTime = DateTime.Now;
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InvokeOnFinished(new FinishedArgs {LinesRemoved = linesRemoved, TotalLines = lineNumber, TotalTime = endTime.Subtract(startTime)});
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}
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private static bool ContainsString(string line, IEnumerable<string> linesToRemove)
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{
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foreach (var lineToRemove in linesToRemove)
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{
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if(line.Contains(lineToRemove))
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return true;
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}
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return false;
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}
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public static event RemovedLine OnRemovedLine;
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public static event Finished OnFinished;
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public static void InvokeOnFinished(FinishedArgs args)
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{
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Finished handler = OnFinished;
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if (handler != null) handler(null, args);
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}
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public static void InvokeOnRemovedLine(RemovedLineArgs args)
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{
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RemovedLine handler = OnRemovedLine;
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if (handler != null) handler(null, args);
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}
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}
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public delegate void Finished(object sender, FinishedArgs args);
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public class FinishedArgs
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{
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public int TotalLines { get; set; }
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public int LinesRemoved { get; set; }
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public TimeSpan TotalTime { get; set; }
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}
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public delegate void RemovedLine(object sender, RemovedLineArgs args);
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public class RemovedLineArgs
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{
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public string RemovedLine { get; set; }
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public int RemovedLineNumber { get; set; }
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} |