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Only use 0-9A-Za-z-_()[] characters in filenames

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This commit is contained in:
nullium21 2022-10-26 13:31:32 +03:00
parent 72b594d72e
commit dffebdf7ed
1 changed files with 22 additions and 9 deletions
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31
osu.Game/Extensions/ModelExtensions.cs
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@ -2,7 +2,6 @@
// See the LICENCE file in the repository root for full licence text.
using System.IO;
using System.Linq;
using osu.Game.Beatmaps;
using osu.Game.Database;
using osu.Game.IO;
@ -137,20 +136,34 @@ namespace osu.Game.Extensions
return instance.OnlineID.Equals(other.OnlineID);
}
private static readonly char[] invalid_filename_characters = Path.GetInvalidFileNameChars()
// Backslash is added to avoid issues when exporting to zip.
// See SharpCompress filename normalisation https://github.com/adamhathcock/sharpcompress/blob/a1e7c0068db814c9aa78d86a94ccd1c761af74bd/src/SharpCompress/Writers/Zip/ZipWriter.cs#L143.
.Append('\\')
.ToArray();
private static bool isValidFilenameChar(this char ch)
{
if (ch >= '0' && ch <= '9')
return true;
if (ch >= 'A' && ch <= 'Z')
return true;
if (ch >= 'a' && ch <= 'z')
return true;
return "-_()[]".Contains(ch);
}
/// <summary>
/// Get a valid filename for use inside a zip file. Avoids backslashes being incorrectly converted to directories.
/// </summary>
public static string GetValidArchiveContentFilename(this string filename)
{
foreach (char c in invalid_filename_characters)
filename = filename.Replace(c, '_');
return filename;
char[] resultData = filename.ToCharArray();
for (int i = 0; i < resultData.Length; i++)
{
if (!isValidFilenameChar(resultData[i]))
resultData[i] = '_';
}
return new string(resultData);
}
}
}