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osu-lazer/osu.Game/Utils/ZipUtils.cs

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// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
// See the LICENCE file in the repository root for full licence text.
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using System;
using System.IO;
using SharpCompress.Archives.Zip;
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namespace osu.Game.Utils
{
public static class ZipUtils
{
public static bool IsZipArchive(MemoryStream stream)
{
try
{
stream.Seek(0, SeekOrigin.Begin);
using (var arc = ZipArchive.Open(stream))
{
foreach (var entry in arc.Entries)
{
using (entry.OpenEntryStream())
{
}
}
}
return true;
}
catch (Exception)
{
return false;
}
finally
{
stream.Seek(0, SeekOrigin.Begin);
}
}
public static bool IsZipArchive(string path)
{
if (!File.Exists(path))
return false;
try
{
using (var arc = ZipArchive.Open(path))
{
foreach (var entry in arc.Entries)
{
using (entry.OpenEntryStream())
{
}
}
}
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return true;
}
catch (Exception)
{
return false;
}
}
}
}