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Merge pull request #21468 from Piggey/fix-exported-replay-overwrite

Fix `LegacyExporter` classes overwriting existing files
This commit is contained in:
Bartłomiej Dach 2022-12-03 21:51:26 +01:00 committed by GitHub
commit abff9421aa
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3 changed files with 211 additions and 14 deletions

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@ -11,7 +11,7 @@ namespace osu.Game.Tests.Utils
public class NamingUtilsTest
{
[Test]
public void TestEmptySet()
public void TestNextBestNameEmptySet()
{
string nextBestName = NamingUtils.GetNextBestName(Enumerable.Empty<string>(), "New Difficulty");
@ -19,7 +19,7 @@ namespace osu.Game.Tests.Utils
}
[Test]
public void TestNotTaken()
public void TestNextBestNameNotTaken()
{
string[] existingNames =
{
@ -34,7 +34,7 @@ namespace osu.Game.Tests.Utils
}
[Test]
public void TestNotTakenButClose()
public void TestNextBestNameNotTakenButClose()
{
string[] existingNames =
{
@ -49,7 +49,7 @@ namespace osu.Game.Tests.Utils
}
[Test]
public void TestAlreadyTaken()
public void TestNextBestNameAlreadyTaken()
{
string[] existingNames =
{
@ -62,7 +62,7 @@ namespace osu.Game.Tests.Utils
}
[Test]
public void TestAlreadyTakenWithDifferentCase()
public void TestNextBestNameAlreadyTakenWithDifferentCase()
{
string[] existingNames =
{
@ -75,7 +75,7 @@ namespace osu.Game.Tests.Utils
}
[Test]
public void TestAlreadyTakenWithBrackets()
public void TestNextBestNameAlreadyTakenWithBrackets()
{
string[] existingNames =
{
@ -88,7 +88,7 @@ namespace osu.Game.Tests.Utils
}
[Test]
public void TestMultipleAlreadyTaken()
public void TestNextBestNameMultipleAlreadyTaken()
{
string[] existingNames =
{
@ -104,7 +104,7 @@ namespace osu.Game.Tests.Utils
}
[Test]
public void TestEvenMoreAlreadyTaken()
public void TestNextBestNameEvenMoreAlreadyTaken()
{
string[] existingNames = Enumerable.Range(1, 30).Select(i => $"New Difficulty ({i})").Append("New Difficulty").ToArray();
@ -114,7 +114,7 @@ namespace osu.Game.Tests.Utils
}
[Test]
public void TestMultipleAlreadyTakenWithGaps()
public void TestNextBestNameMultipleAlreadyTakenWithGaps()
{
string[] existingNames =
{
@ -128,5 +128,153 @@ namespace osu.Game.Tests.Utils
Assert.AreEqual("New Difficulty (2)", nextBestName);
}
[Test]
public void TestNextBestFilenameEmptySet()
{
string nextBestFilename = NamingUtils.GetNextBestFilename(Enumerable.Empty<string>(), "test_file.osr");
Assert.AreEqual("test_file.osr", nextBestFilename);
}
[Test]
public void TestNextBestFilenameNotTaken()
{
string[] existingFiles =
{
"this file exists.zip",
"that file exists.too",
"three.4",
};
string nextBestFilename = NamingUtils.GetNextBestFilename(existingFiles, "test_file.osr");
Assert.AreEqual("test_file.osr", nextBestFilename);
}
[Test]
public void TestNextBestFilenameNotTakenButClose()
{
string[] existingFiles =
{
"replay_file(1).osr",
"replay_file (not a number).zip",
"replay_file (1 <- now THAT is a number right here).lol",
};
string nextBestFilename = NamingUtils.GetNextBestFilename(existingFiles, "replay_file.osr");
Assert.AreEqual("replay_file.osr", nextBestFilename);
}
[Test]
public void TestNextBestFilenameAlreadyTaken()
{
string[] existingFiles =
{
"replay_file.osr",
};
string nextBestFilename = NamingUtils.GetNextBestFilename(existingFiles, "replay_file.osr");
Assert.AreEqual("replay_file (1).osr", nextBestFilename);
}
[Test]
public void TestNextBestFilenameAlreadyTakenDifferentCase()
{
string[] existingFiles =
{
"replay_file.osr",
"RePlAy_FiLe (1).OsR",
"REPLAY_FILE (2).OSR",
};
string nextBestFilename = NamingUtils.GetNextBestFilename(existingFiles, "replay_file.osr");
Assert.AreEqual("replay_file (3).osr", nextBestFilename);
}
[Test]
public void TestNextBestFilenameAlreadyTakenWithBrackets()
{
string[] existingFiles =
{
"replay_file.osr",
"replay_file (copy).osr",
};
string nextBestFilename = NamingUtils.GetNextBestFilename(existingFiles, "replay_file.osr");
Assert.AreEqual("replay_file (1).osr", nextBestFilename);
nextBestFilename = NamingUtils.GetNextBestFilename(existingFiles, "replay_file (copy).osr");
Assert.AreEqual("replay_file (copy) (1).osr", nextBestFilename);
}
[Test]
public void TestNextBestFilenameMultipleAlreadyTaken()
{
string[] existingFiles =
{
"replay_file.osr",
"replay_file (1).osr",
"replay_file (2).osr",
"replay_file (3).osr",
};
string nextBestFilename = NamingUtils.GetNextBestFilename(existingFiles, "replay_file.osr");
Assert.AreEqual("replay_file (4).osr", nextBestFilename);
}
[Test]
public void TestNextBestFilenameMultipleAlreadyTakenWithGaps()
{
string[] existingFiles =
{
"replay_file.osr",
"replay_file (1).osr",
"replay_file (2).osr",
"replay_file (4).osr",
"replay_file (5).osr",
};
string nextBestFilename = NamingUtils.GetNextBestFilename(existingFiles, "replay_file.osr");
Assert.AreEqual("replay_file (3).osr", nextBestFilename);
}
[Test]
public void TestNextBestFilenameNoExtensions()
{
string[] existingFiles =
{
"those",
"are definitely",
"files",
};
string nextBestFilename = NamingUtils.GetNextBestFilename(existingFiles, "surely");
Assert.AreEqual("surely", nextBestFilename);
nextBestFilename = NamingUtils.GetNextBestFilename(existingFiles, "those");
Assert.AreEqual("those (1)", nextBestFilename);
}
[Test]
public void TestNextBestFilenameDifferentExtensions()
{
string[] existingFiles =
{
"replay_file.osr",
"replay_file (1).osr",
"replay_file.txt",
};
string nextBestFilename = NamingUtils.GetNextBestFilename(existingFiles, "replay_file.osr");
Assert.AreEqual("replay_file (2).osr", nextBestFilename);
nextBestFilename = NamingUtils.GetNextBestFilename(existingFiles, "replay_file.txt");
Assert.AreEqual("replay_file (1).txt", nextBestFilename);
}
}
}

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@ -3,9 +3,11 @@
#nullable disable
using System.Collections.Generic;
using System.IO;
using osu.Framework.Platform;
using osu.Game.Extensions;
using osu.Game.Utils;
using SharpCompress.Archives.Zip;
namespace osu.Game.Database
@ -37,8 +39,11 @@ namespace osu.Game.Database
/// <param name="item">The item to export.</param>
public void Export(TModel item)
{
string filename = $"{item.GetDisplayString().GetValidFilename()}{FileExtension}";
string itemFilename = item.GetDisplayString().GetValidFilename();
IEnumerable<string> existingExports = exportStorage.GetFiles("", $"{itemFilename}*{FileExtension}");
string filename = NamingUtils.GetNextBestFilename(existingExports, $"{itemFilename}{FileExtension}");
using (var stream = exportStorage.CreateFileSafely(filename))
ExportModelTo(item, stream);

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@ -2,6 +2,7 @@
// See the LICENCE file in the repository root for full licence text.
using System.Collections.Generic;
using System.IO;
using System.Text.RegularExpressions;
namespace osu.Game.Utils
@ -28,8 +29,53 @@ namespace osu.Game.Utils
/// </remarks>
public static string GetNextBestName(IEnumerable<string> existingNames, string desiredName)
{
string pattern = $@"^(?i){Regex.Escape(desiredName)}(?-i)( \((?<copyNumber>[1-9][0-9]*)\))?$";
string pattern = $@"^{getBaselineNameDetectingPattern(desiredName)}$";
var regex = new Regex(pattern, RegexOptions.Compiled);
int bestNumber = findBestNumber(existingNames, regex);
return bestNumber == 0
? desiredName
: $"{desiredName} ({bestNumber.ToString()})";
}
/// <summary>
/// Given a set of <paramref name="existingFilenames"/> and a desired target <paramref name="desiredFilename"/>
/// finds a filename closest to <paramref name="desiredFilename"/> that is not in <paramref name="existingFilenames"/>
/// </summary>
public static string GetNextBestFilename(IEnumerable<string> existingFilenames, string desiredFilename)
{
string name = Path.GetFileNameWithoutExtension(desiredFilename);
string extension = Path.GetExtension(desiredFilename);
string pattern = $@"^{getBaselineNameDetectingPattern(name)}(?i){Regex.Escape(extension)}(?-i)$";
var regex = new Regex(pattern, RegexOptions.Compiled);
int bestNumber = findBestNumber(existingFilenames, regex);
return bestNumber == 0
? desiredFilename
: $"{name} ({bestNumber.ToString()}){extension}";
}
/// <summary>
/// Generates a basic regex pattern that will match all possible conflicting filenames when picking the best available name, given the <paramref name="desiredName"/>.
/// The generated pattern can be composed into more complicated regexes for particular uses, such as picking filenames, which need additional file extension handling.
/// </summary>
/// <remarks>
/// The regex shall detect:
/// <list type="bullet">
/// <item>all strings that are equal to <paramref name="desiredName"/>,</item>
/// <item>all strings of the format <c>desiredName (number)</c>, where <c>number</c> is a number written using Arabic numerals.</item>
/// </list>
/// All comparisons are made in a case-insensitive manner.
/// If a number is detected in the matches, it will be output to the <c>copyNumber</c> named group.
/// </remarks>
private static string getBaselineNameDetectingPattern(string desiredName)
=> $@"(?i){Regex.Escape(desiredName)}(?-i)( \((?<copyNumber>[1-9][0-9]*)\))?";
private static int findBestNumber(IEnumerable<string> existingNames, Regex regex)
{
var takenNumbers = new HashSet<int>();
foreach (string name in existingNames)
@ -53,9 +99,7 @@ namespace osu.Game.Utils
while (takenNumbers.Contains(bestNumber))
bestNumber += 1;
return bestNumber == 0
? desiredName
: $"{desiredName} ({bestNumber})";
return bestNumber;
}
}
}