rainmeter-studio/RainmeterStudio/Documents/Text/TextStorage.cs

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1.7 KiB
C#
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using System;
using System.IO;
using RainmeterStudio.Model;
namespace RainmeterStudio.Documents.Text
{
/// <summary>
/// Storage for text files
/// </summary>
public class TextStorage : IDocumentStorage
{
/// <inheritdoc />
IDocument IDocumentStorage.Read(string path)
{
TextDocument document = new TextDocument();
document.FilePath = path;
document.Text = File.ReadAllText(path);
return document;
}
/// <inheritdoc />
public void Write(string path, IDocument document)
{
TextDocument textDocument = document as TextDocument;
if (textDocument == null)
throw new ArgumentException("Provided document is not supported by this storage.");
File.WriteAllText(path, textDocument.Text);
}
/// <inheritdoc />
public bool CanRead(string path)
{
// Open the file
FileStream file = File.OpenRead(path);
// Read a small chunk (1kb should be enough)
byte[] buffer = new byte[1024];
int read = file.Read(buffer, 0, buffer.Length);
// Close file
file.Close();
// Find 4 consecutive zero bytes
int cnt = 0;
for (int i = 0; i < read; i++)
{
// Count zero bytes
if (buffer[i] == 0)
++cnt;
else cnt = 0;
// Found > 4? Most likely binary file
if (cnt >= 4)
return false;
}
// Not found, probably text file
return true;
}
}
}