C# ファイル検索(インクリメンタルサーチ)

C# ファイル検索+指定秒数でサムネイル作成(FFmpeg)

以前からときどきfenrir(B@r09u3 Style Op.2)というフリーソフトを利用していたが、更新が止まっているようなので、自分用に同じようなソフトを作成した。もともとファイル検索だけできればいいので、機能も見た目も限定的。

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Windows.Forms;

namespace CreateIndex
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("インデックス作成中 ... ");

            string scanPath =  Application.StartupPath + @"\scan.txt";
            List<string> rawItems = new List<string>();

            foreach (string path in File.ReadAllLines(scanPath))
            {
                if (!Directory.Exists(path)) continue;

                var ln = Directory.EnumerateFiles(path, "*.*", SearchOption.AllDirectories).ToList();
                rawItems.AddRange(ln);
            }

            File.WriteAllLines(Application.StartupPath + @"\index.dat", rawItems);
        }
    }
}

using System;

using System.Collections.Generic;

using System.IO;

using System.Linq;

using System.Windows.Forms;

namespace CreateIndex

{

class Program

{

static void Main(string[] args)

{

Console.WriteLine("インデックス作成中 ... ");

string scanPath = Application.StartupPath + @"\scan.txt";

List<string> rawItems = new List<string>();

foreach (string path in File.ReadAllLines(scanPath))

{

if (!Directory.Exists(path)) continue;

var ln = Directory.EnumerateFiles(path, "*.*", SearchOption.AllDirectories).ToList();

rawItems.AddRange(ln);

}

File.WriteAllLines(Application.StartupPath + @"\index.dat", rawItems);

}

using System;
using System.Collections.Generic;
using System.Data;
using System.IO;
using System.Linq;
using System.Windows.Forms;
using System.Xml.Serialization;
using System.Text;

namespace FileSearch
{
    public partial class Form1 : Form
    {
        string RemoteIndexPath = Application.StartupPath + @"\remote_index_path.txt";
        string IndexPath = Application.StartupPath + @"\index.dat";

        List<string> RawItems = new List<string>();

        int VisibleCount = 100;
        int RawItemCount = 0;
        string WriteTime = "";
 
        public Form1()
        {
            InitializeComponent();

            if (!IndexLoad()) return;

            LoadPosition();

            var delayExecute = new DelayExecute();
            delayExecute.Execute += (s, e) => SetupDatasource();
            textBox1.TextChanged += (s, e) => delayExecute.ReserveExecute();

            listBox1.MouseDoubleClick += (s, e) => OpenFile(s, e);

            this.FormClosing += (s, e) => SavePosition();
        }

        private bool IndexLoad()
        {
            
            if (!File.Exists(RemoteIndexPath)) // リモートインデックスを指定するファイルがない場合
            {
                MessageBox.Show("インデックスファイルが見つかりませんでした。"); 
                return false;
            }
            
            string remoteIndexPath = File.ReadAllText(RemoteIndexPath);

            if (!File.Exists(IndexPath) && !File.Exists(remoteIndexPath)) // ローカル、リモートにない場合
            {
                MessageBox.Show("インデックスファイルが見つかりませんでした。");
                return false;
            }
            else if (File.Exists(IndexPath) && !File.Exists(remoteIndexPath)) // ローカルにあって、リモートにない場合
            {
                RawItems = File.ReadAllLines(IndexPath).ToList();
                RawItemCount = RawItems.Count();
                WriteTime = File.GetLastWriteTime(IndexPath).ToString("yyyy/MM/dd HH:mm:ss");
            }
            else if (!File.Exists(IndexPath) && File.Exists(remoteIndexPath)) // ローカルになくて、リモートにある場合
            {
                File.Copy(remoteIndexPath, IndexPath);
                RawItems = File.ReadAllLines(IndexPath).ToList();
                RawItemCount = RawItems.Count();
                WriteTime = File.GetLastWriteTime(IndexPath).ToString("yyyy/MM/dd HH:mm:ss");
            }
            else if (File.Exists(IndexPath) && File.Exists(remoteIndexPath)) // ローカル、リモートにある場合
            {
                if (File.GetLastWriteTime(IndexPath) < File.GetLastWriteTime(remoteIndexPath)) // リモートの方が最新の場合
                { 
                    if (DialogResult.Yes == MessageBox.Show("最新のインデックスファイルが存在します。更新しますか？","", MessageBoxButtons.YesNo))
                    {
                        File.Copy(remoteIndexPath, IndexPath, true);
                    }
                    RawItems = File.ReadAllLines(IndexPath).ToList();
                    RawItemCount = RawItems.Count();
                    WriteTime = File.GetLastWriteTime(IndexPath).ToString("yyyy/MM/dd HH:mm:ss");
                }
                else // ローカルの方が最新の場合
                {
                    RawItems = File.ReadAllLines(IndexPath).ToList();
                    RawItemCount = RawItems.Count();
                    WriteTime = File.GetLastWriteTime(IndexPath).ToString("yyyy/MM/dd HH:mm:ss");
                }
            }
            return true;
        }

        private void SetupDatasource()
        {
            System.Diagnostics.Stopwatch stopwatch = new System.Diagnostics.Stopwatch();
            stopwatch.Start();

            string needle = "";

            Invoke((MethodInvoker)(() => {
                needle = textBox1.Text;
            }));

            IEnumerable<string> items = new List<string>(VisibleCount);
            
            if (needle == "")
            {
                items = RawItems.Take(VisibleCount);
            }
            else
            {
                List<string> tmpList = new List<string>(RawItems);
                tmpList.Capacity = RawItemCount;

                foreach (string tmpString in needle.Split('|'))
                {
                    tmpList = tmpList.AsParallel().Where(x => x.ToLower().Contains(tmpString.ToLower())).ToList();
                }
                items = tmpList.Take(VisibleCount);
            }

            var itemClassList = new System.Collections.Concurrent.ConcurrentBag<ItemClass>();

            System.Threading.Tasks.Parallel.ForEach(items, item =>
            {
                itemClassList.Add(new ItemClass()
                {
                    DisplayItemPath = Path.GetFileName(item) + " . . . ■" + Path.GetDirectoryName(item),
                    ItemPath = item
                });
            });

            stopwatch.Stop();

            Invoke((MethodInvoker)(() => {
                listBox1.DataSource = itemClassList.ToList();
                listBox1.DisplayMember = "DisplayItemPath";
                Text = items.Count() + "/" + RawItemCount + "件表示 (" + stopwatch.ElapsedMilliseconds.ToString() + "ms)：" + WriteTime + "インデックス";
            }));
        }

        private void OpenFile(object sender, MouseEventArgs e)
        {
            var itemPath = ((ItemClass)listBox1.SelectedItem).ItemPath;

            if (!File.Exists(itemPath))
            {
                MessageBox.Show("ファイルを開くことができませんでした。");
                return;
            } 

            if (ModifierKeys == Keys.Control)
            {
                System.Diagnostics.Process.Start(Path.GetDirectoryName(itemPath));
            }
            else
            {
                System.Diagnostics.Process.Start(itemPath);
            }
        }
        private void LoadPosition()
        {
            if (!File.Exists(Application.StartupPath + @"\dat.xml")) return;

            this.StartPosition = FormStartPosition.Manual;

            XmlSerializer xs = new XmlSerializer(typeof(List<int>));
            using (StreamReader sr = new StreamReader(Application.StartupPath + @"\dat.xml", Encoding.UTF8))
            {
                try
                {
                    List<int> items = (List<int>)xs.Deserialize(sr);

                    this.Width = (int)items[0];
                    this.Height = (int)items[1];
                    this.Top = (int)items[2];
                    this.Left = (int)items[3];
                }
                catch
                {
                    this.StartPosition = FormStartPosition.WindowsDefaultLocation;
                }
            }
        }

        private void SavePosition()
        {
            if (this.WindowState == FormWindowState.Maximized) return;

            XmlSerializer xs = new XmlSerializer(typeof(List<int>));
            using (StreamWriter sw = new StreamWriter(Application.StartupPath + @"\dat.xml", false, Encoding.UTF8))
            {
                List<int> items = new List<int>();

                items.Add(this.Width);
                items.Add(this.Height);
                items.Add(this.Top);
                items.Add(this.Left);

                xs.Serialize(sw, items);
            }
        }
    }

    struct ItemClass
    {
        public string DisplayItemPath { set; get; }
        public string ItemPath { set; get; }
    }

    class DelayExecute
    {
        public event EventHandler Execute;
        private int DelayTime = 500;

        System.Threading.Timer Timer;

        public DelayExecute()
        {
            Timer = new System.Threading.Timer(x => {
                Execute(this, EventArgs.Empty);
            });
        }

        public void ReserveExecute()
        {
            Timer.Change(DelayTime, System.Threading.Timeout.Infinite);
        }
    }
}

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using System;

using System.Collections.Generic;

using System.Data;

using System.IO;

using System.Linq;

using System.Windows.Forms;

using System.Xml.Serialization;

using System.Text;

namespace FileSearch

{

public partial class Form1 : Form

{

string RemoteIndexPath = Application.StartupPath + @"\remote_index_path.txt";

string IndexPath = Application.StartupPath + @"\index.dat";

List<string> RawItems = new List<string>();

int VisibleCount = 100;

int RawItemCount = 0;

string WriteTime = "";

public Form1()

{

InitializeComponent();

if (!IndexLoad()) return;

LoadPosition();

var delayExecute = new DelayExecute();

delayExecute.Execute += (s, e) => SetupDatasource();

textBox1.TextChanged += (s, e) => delayExecute.ReserveExecute();

listBox1.MouseDoubleClick += (s, e) => OpenFile(s, e);

this.FormClosing += (s, e) => SavePosition();

}

private bool IndexLoad()

{

if (!File.Exists(RemoteIndexPath)) // リモートインデックスを指定するファイルがない場合

{

MessageBox.Show("インデックスファイルが見つかりませんでした。");

return false;

}

string remoteIndexPath = File.ReadAllText(RemoteIndexPath);

if (!File.Exists(IndexPath) && !File.Exists(remoteIndexPath)) // ローカル、リモートにない場合

{

MessageBox.Show("インデックスファイルが見つかりませんでした。");

return false;

}

else if (File.Exists(IndexPath) && !File.Exists(remoteIndexPath)) // ローカルにあって、リモートにない場合

{

RawItems = File.ReadAllLines(IndexPath).ToList();

RawItemCount = RawItems.Count();

WriteTime = File.GetLastWriteTime(IndexPath).ToString("yyyy/MM/dd HH:mm:ss");

}

else if (!File.Exists(IndexPath) && File.Exists(remoteIndexPath)) // ローカルになくて、リモートにある場合

{

File.Copy(remoteIndexPath, IndexPath);

RawItems = File.ReadAllLines(IndexPath).ToList();

RawItemCount = RawItems.Count();

WriteTime = File.GetLastWriteTime(IndexPath).ToString("yyyy/MM/dd HH:mm:ss");

}

else if (File.Exists(IndexPath) && File.Exists(remoteIndexPath)) // ローカル、リモートにある場合

{

if (File.GetLastWriteTime(IndexPath) < File.GetLastWriteTime(remoteIndexPath)) // リモートの方が最新の場合

{

if (DialogResult.Yes == MessageBox.Show("最新のインデックスファイルが存在します。更新しますか？","", MessageBoxButtons.YesNo))

{

File.Copy(remoteIndexPath, IndexPath, true);

}

RawItems = File.ReadAllLines(IndexPath).ToList();

RawItemCount = RawItems.Count();

WriteTime = File.GetLastWriteTime(IndexPath).ToString("yyyy/MM/dd HH:mm:ss");

}

else // ローカルの方が最新の場合

{

RawItems = File.ReadAllLines(IndexPath).ToList();

RawItemCount = RawItems.Count();

WriteTime = File.GetLastWriteTime(IndexPath).ToString("yyyy/MM/dd HH:mm:ss");

}

return true;

}

private void SetupDatasource()

{

System.Diagnostics.Stopwatch stopwatch = new System.Diagnostics.Stopwatch();

stopwatch.Start();

string needle = "";

Invoke((MethodInvoker)(() => {

needle = textBox1.Text;

}));

IEnumerable<string> items = new List<string>(VisibleCount);

if (needle == "")

{

items = RawItems.Take(VisibleCount);

}

else

{

List<string> tmpList = new List<string>(RawItems);

tmpList.Capacity = RawItemCount;

foreach (string tmpString in needle.Split('|'))

{

tmpList = tmpList.AsParallel().Where(x => x.ToLower().Contains(tmpString.ToLower())).ToList();

}

items = tmpList.Take(VisibleCount);

}

var itemClassList = new System.Collections.Concurrent.ConcurrentBag<ItemClass>();

System.Threading.Tasks.Parallel.ForEach(items, item =>

{

itemClassList.Add(new ItemClass()

{

DisplayItemPath = Path.GetFileName(item) + " . . . ■" + Path.GetDirectoryName(item),

ItemPath = item

});

stopwatch.Stop();

Invoke((MethodInvoker)(() => {

listBox1.DataSource = itemClassList.ToList();

listBox1.DisplayMember = "DisplayItemPath";

Text = items.Count() + "/" + RawItemCount + "件表示 (" + stopwatch.ElapsedMilliseconds.ToString() + "ms)：" + WriteTime + "インデックス";

}));

}

private void OpenFile(object sender, MouseEventArgs e)

{

var itemPath = ((ItemClass)listBox1.SelectedItem).ItemPath;

if (!File.Exists(itemPath))

{

MessageBox.Show("ファイルを開くことができませんでした。");

return;

}

if (ModifierKeys == Keys.Control)

{

System.Diagnostics.Process.Start(Path.GetDirectoryName(itemPath));

}

else

{

System.Diagnostics.Process.Start(itemPath);

}

private void LoadPosition()

{

if (!File.Exists(Application.StartupPath + @"\dat.xml")) return;

this.StartPosition = FormStartPosition.Manual;

XmlSerializer xs = new XmlSerializer(typeof(List<int>));

using (StreamReader sr = new StreamReader(Application.StartupPath + @"\dat.xml", Encoding.UTF8))

{

try

{

List<int> items = (List<int>)xs.Deserialize(sr);

this.Width = (int)items[0];

this.Height = (int)items[1];

this.Top = (int)items[2];

this.Left = (int)items[3];

}

catch

{

this.StartPosition = FormStartPosition.WindowsDefaultLocation;

}

private void SavePosition()

{

if (this.WindowState == FormWindowState.Maximized) return;

XmlSerializer xs = new XmlSerializer(typeof(List<int>));

using (StreamWriter sw = new StreamWriter(Application.StartupPath + @"\dat.xml", false, Encoding.UTF8))

{

List<int> items = new List<int>();

items.Add(this.Width);

items.Add(this.Height);

items.Add(this.Top);

items.Add(this.Left);

xs.Serialize(sw, items);

}

struct ItemClass

{

public string DisplayItemPath { set; get; }

public string ItemPath { set; get; }

}

class DelayExecute

{

public event EventHandler Execute;

private int DelayTime = 500;

System.Threading.Timer Timer;

public DelayExecute()

{

Timer = new System.Threading.Timer(x => {

Execute(this, EventArgs.Empty);

});

}

public void ReserveExecute()

{

Timer.Change(DelayTime, System.Threading.Timeout.Infinite);

}