57 lines
1.5 KiB
C#
57 lines
1.5 KiB
C#
namespace SimpleTGBot;
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internal class TempStorage : IDisposable
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{
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private string directory;
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private Dictionary<FileStream, string> createdTempFiles;
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private Random rng;
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public TempStorage()
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{
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rng = new Random();
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do
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{
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directory = Path.GetTempPath() + "/demotivatorBot-" + RandomHexString(4);
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} while (Directory.Exists(directory));
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Directory.CreateDirectory(directory);
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createdTempFiles = new Dictionary<FileStream, string>();
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}
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public void Dispose()
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{
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foreach (var kv in createdTempFiles)
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{
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kv.Key.Dispose();
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if (File.Exists(kv.Value))
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{
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File.Delete(kv.Value);
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}
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}
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Directory.Delete(directory);
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}
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public (string, FileStream) newTemporaryFile(string? prefix, string? extension)
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{
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string filename = directory + "/" + (prefix != null ? prefix + "-" : "") + RandomHexString(8) + (extension != null ? "." + extension : "");
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FileStream file = File.Open(filename, FileMode.Create, FileAccess.ReadWrite, FileShare.None);
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createdTempFiles.Add(file, filename);
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return (filename, file);
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}
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public void deleteTemporaryFile(FileStream file)
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{
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if (createdTempFiles.ContainsKey(file))
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{
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File.Delete(createdTempFiles[file]);
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}
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file.Dispose();
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}
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private string RandomHexString(int n)
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{
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return rng.NextInt64(1L << (n << 2)).ToString("X" + n);
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}
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}
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