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FileFinderForm.cs
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FileFinderForm.cs
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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;
using System.Threading;
using System.Threading.Tasks;
namespace FileFinder
{
public partial class FileFinderForm : Form
{
private bool _canceled;
private int _count = 0;
public FileFinderForm()
{
InitializeComponent();
}
private void btnSearch_Click(object sender, EventArgs e)
{
String fldr = txtFolder.Text;
if (String.IsNullOrWhiteSpace(fldr) || !Directory.Exists(fldr))
{
MessageBox.Show("Please indicate a valid base folder");
return;
}
String patt = txtPattern.Text;
if (String.IsNullOrWhiteSpace(patt))
{
MessageBox.Show("Please indicate a valid pattern");
return;
}
String word = txtWord.Text;
if (String.IsNullOrWhiteSpace(word))
{
MessageBox.Show("Please indicate a word");
return;
}
btnSearch.Enabled = false;
btnCancel.Enabled = true;
txtResults.Text = "";
_canceled = false;
/* Thread t = new Thread(new ThreadStart(() =>
{
foreach (var fname in Directory.EnumerateFiles(fldr, patt, SearchOption.AllDirectories))
{
if (_canceled)
{
break;
}
else
{
String name = fname;
String content = File.ReadAllText(name);
if (content.Contains(word))
txtResults.AddLine(name);
}
}
}));
t.Start();*/
/* ThreadPool.QueueUserWorkItem( new WaitCallback( (o)=>
{
foreach (var fname in Directory.EnumerateFiles(fldr, patt, SearchOption.AllDirectories))
{
if (_canceled)
{
break;
}
else
{
String name = fname;
ThreadPool.QueueUserWorkItem(new WaitCallback((o2) =>
{
if (!_canceled)
{
String content = File.ReadAllText(name);
if (content.Contains(word))
txtResults.AddLine(name);
}
}));
}
}
}));*/
/* _count = 0;
int count_active_work_items = 1;
ThreadPool.QueueUserWorkItem( (o1)=>
{
foreach (var dname in Directory.EnumerateDirectories(fldr, "*", SearchOption.AllDirectories))
{
if (!_canceled)
{
Interlocked.Increment(ref count_active_work_items);
ThreadPool.QueueUserWorkItem((o2) =>
{
if (!_canceled)
{
foreach (var fname in Directory.EnumerateFiles(dname, patt))
{
if (_canceled)
{
break;
}
String name = fname;
Interlocked.Increment(ref _count);
String content = File.ReadAllText(name);
if (content.Contains(word))
txtResults.AddLine(name);
}
if (Interlocked.Decrement(ref count_active_work_items) == 0)
{
this.BeginInvoke(new Action(() =>
{
btnCancel.Enabled = false;
btnSearch.Enabled = true;
MessageBox.Show(string.Format("Finished", _count));
}));
}
}
});
}
}
if (Interlocked.Decrement(ref count_active_work_items) == 0)
{
this.BeginInvoke(new Action(() =>
{
btnCancel.Enabled = false;
btnSearch.Enabled = true;
MessageBox.Show(string.Format("Finished", _count));
}));
}
});*/
/* _count = 0;
var itemsCounter = new ActiveWorkItemCounter(new Action(() =>
{
this.BeginInvoke(new Action(() =>
{
btnCancel.Enabled = false;
btnSearch.Enabled = true;
MessageBox.Show(string.Format("Finished", _count));
}));
}));
ThreadPool.QueueUserWorkItem( (o1)=>
{
foreach (var dname in Directory.EnumerateDirectories(fldr, "*", SearchOption.AllDirectories))
{
if (!_canceled)
{
itemsCounter.Increment();
ThreadPool.QueueUserWorkItem((o2) =>
{
if (!_canceled)
{
foreach (var fname in Directory.EnumerateFiles(dname, patt))
{
if (_canceled)
{
break;
}
String name = fname;
Interlocked.Increment(ref _count);
String content = File.ReadAllText(name);
if (content.Contains(word))
txtResults.AddLine(name);
}
itemsCounter.Decrement();
}
});
}
}
itemsCounter.Decrement();
});*/
int nFiles = 0;
//var sch = TaskScheduler.FromCurrentSynchronizationContext();
var ctx = SynchronizationContext.Current;
Task mainTask = null;
mainTask = new Task(() =>
{
// Parallel.ForEach(Directory.EnumerateDirectories(fldr, "*", SearchOption.AllDirectories),
// (dir) =>
// foreach (var dir in Directory.EnumerateDirectories(fldr, "*", SearchOption.AllDirectories))
// {
// if (!_canceled)
// {
Parallel.ForEach(Directory.EnumerateFiles(fldr, patt, SearchOption.AllDirectories),
/*new ParallelOptions() { MaxDegreeOfParallelism = 16 * Environment.ProcessorCount },*/
() => 0,
(fname, s, curr) =>
{
if (!_canceled)
{
string content = File.ReadAllText(fname);
if (content.Contains(word))
{
ctx.Post((o) =>
{
txtResults.AddLine(fname);
}, null);
//Interlocked.Increment(ref nFiles);
return ++curr;
}
else
{
return curr;
}
}
else
{
return curr;
}
},
(curr) => { Interlocked.Add(ref nFiles, curr); });
// }
// });
// }
});
mainTask.ContinueWith((t) =>
{
ctx.Post((o) =>
{
txtResults.AddLine(string.Format("Number of files: {0}", nFiles));
btnCancel.Enabled = false;
btnSearch.Enabled = true;
}, null);
}/*, sch*/);
mainTask.Start();
}
private void btnFolder_Click(object sender, EventArgs e)
{
FolderBrowserDialog folderDialog = new FolderBrowserDialog();
folderDialog.Description = "Select Folder";
if (folderDialog.ShowDialog() == DialogResult.OK)
{
txtFolder.Text = folderDialog.SelectedPath;
}
}
private void btnCancel_Click(object sender, EventArgs e)
{
_canceled = true;
btnCancel.Enabled = false;
btnSearch.Enabled = true;
MessageBox.Show(string.Format("Processed {0} files", _count));
}
}
static class TextBoxExtensions
{
public static TextBox AddLine(this TextBox textBox, String text)
{
/* textBox.BeginInvoke(new Action(() =>
{
textBox.AppendText(text);
textBox.AppendText("\r\n");
}));
*/
textBox.AppendText(text);
textBox.AppendText("\r\n");
return textBox;
}
}
}