ClearScript/ClearScript/Util/UniqueNameManager.cs at master · git-thinh/ClearScript · GitHub

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// Licensed under the MIT license.

using System.Collections.Generic;

using System.IO;

namespace Microsoft.ClearScript.Util

{

internal interface IUniqueNameManager

{

string GetUniqueName(string inputName, string alternate);

}

internal sealed class UniqueNameManager : IUniqueNameManager

{

private readonly object mapLock = new object();

private readonly Dictionary<string, uint> map = new Dictionary<string, uint>();

#region IUniqueNameManager implementation

public string GetUniqueName(string inputName, string alternate)

{

lock (mapLock)

{

var nonBlankName = MiscHelpers.EnsureNonBlank(inputName, alternate);

uint count;

map.TryGetValue(nonBlankName, out count);

map[nonBlankName] = ++count;

return (count < 2) ? nonBlankName : string.Concat(nonBlankName, " [", count, "]");

}

#endregion

}

internal sealed class UniqueFileNameManager : IUniqueNameManager

{

private readonly object mapLock = new object();

private readonly Dictionary<string, uint> map = new Dictionary<string, uint>();

#region IUniqueNameManager implementation

public string GetUniqueName(string inputName, string alternate)

{

lock (mapLock)

{

var nonBlankName = MiscHelpers.EnsureNonBlank(Path.GetFileNameWithoutExtension(inputName), alternate);

var extension = Path.GetExtension(inputName);

uint count;

map.TryGetValue(nonBlankName, out count);

map[nonBlankName] = ++count;

return (count < 2) ? string.Concat(nonBlankName, extension) : string.Concat(nonBlankName, " [", count, "]", extension);

}

#endregion

}

ClearScript/ClearScript/Util/UniqueNameManager.cs at master · git-thinh/ClearScript · GitHub

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