76 lines
2.3 KiB
C#
76 lines
2.3 KiB
C#
using System.Collections.Concurrent;
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using SharpIDE.Application.Features.SolutionDiscovery;
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namespace SharpIDE.Application.Features.FilePersistence;
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#pragma warning disable VSTHRD011
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/// Holds the in memory copies of files, and manages saving/loading them to/from disk.
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public class IdeOpenTabsFileManager
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{
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private ConcurrentDictionary<SharpIdeFile, Lazy<Task<string>>> _openFiles = new();
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/// Implicitly 'opens' a file if not already open, and returns the text.
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public async Task<string> GetFileTextAsync(SharpIdeFile file)
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{
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var textTaskLazy = _openFiles.GetOrAdd(file, f =>
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{
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var lazy = new Lazy<Task<string>>(Task<string> () => File.ReadAllTextAsync(f.Path));
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return lazy;
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});
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var textTask = textTaskLazy.Value;
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var text = await textTask;
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return text;
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}
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// Calling this assumes that the file is already open - may need to be revisited for code fixes and refactorings. I think all files involved in a multi-file fix/refactor shall just be saved to disk immediately.
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public async Task UpdateFileTextInMemory(SharpIdeFile file, string newText)
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{
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if (!_openFiles.ContainsKey(file)) throw new InvalidOperationException("File is not open in memory.");
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var newLazyTask = new Lazy<Task<string>>(() => Task.FromResult(newText));
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_openFiles[file] = newLazyTask;
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}
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public async Task SaveFileAsync(SharpIdeFile file)
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{
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if (!_openFiles.ContainsKey(file)) throw new InvalidOperationException("File is not open in memory.");
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if (file.IsDirty.Value is false) return;
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var text = await GetFileTextAsync(file);
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await WriteAllText(file, text);
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file.IsDirty.Value = false;
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}
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public async Task UpdateInMemoryIfOpenAndSaveAsync(SharpIdeFile file, string newText)
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{
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if (_openFiles.ContainsKey(file))
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{
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await UpdateFileTextInMemory(file, newText);
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await SaveFileAsync(file);
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}
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else
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{
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await WriteAllText(file, newText);
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}
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}
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private static async Task WriteAllText(SharpIdeFile file, string text)
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{
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file.SuppressDiskChangeEvents = true;
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await File.WriteAllTextAsync(file.Path, text);
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Console.WriteLine($"Saved file {file.Path}");
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file.LastIdeWriteTime = DateTimeOffset.Now;
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file.SuppressDiskChangeEvents = false;
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}
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public async Task SaveAllOpenFilesAsync()
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{
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foreach (var file in _openFiles.Keys.ToList())
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{
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await SaveFileAsync(file);
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}
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}
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}
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#pragma warning restore VSTHRD011
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