private void LoadSaveFile(string strFile)
{
StreamReader sr = new StreamReader(strFile);
string textFile = LZString.DecompressFromBase64(sr.ReadToEnd());
textBoxSaveFileContent.Text = textFile;
sr.Close();
}
private static bool TryPrepareSharplabPreview(string url, int markdownLength, out string?preview)
{
if (!url.Contains("#v2:"))
{
preview = null;
return(false);
}
try
{
// Decode the compressed code from the URL payload
var base64Text = url.Substring(url.IndexOf("#v2:") + "#v2:".Length);
var plainText = LZString.DecompressFromBase64(base64Text);
// Extract the option and get the target language
var textParts = Regex.Match(plainText, @"([^|]*)\|([\s\S]*)$");
var languageOption = Regex.Match(textParts.Groups[1].Value, @"l:(\w+)");
var language = languageOption.Success ? languageOption.Groups[1].Value : "cs";
var sourceCode = textParts.Groups[2].Value;
// Replace the compression tokens
if (language is "cs")
{
sourceCode = ReplaceTokens(sourceCode, _sharplabCSTokens);
// Strip using directives
sourceCode = Regex.Replace(sourceCode, @"using \w+(?:\.\w+)*;", string.Empty);
}
else if (language is "il")
{
sourceCode = ReplaceTokens(sourceCode, _sharplabILTokens);
}
else
{
sourceCode = sourceCode.Replace("@@", "@");
}
var maxPreviewLength = EmbedBuilder.MaxDescriptionLength - (markdownLength + language.Length + "```\n\n```".Length);
preview = FormatUtilities.FormatCodeForEmbed(language, sourceCode, maxPreviewLength);
return(!string.IsNullOrWhiteSpace(preview));
}
catch
{
preview = null;
return(false);
}
}
public void CompatibilityDecompressBase64FromNode(LZStringTestCase test)
{
var compress = RunNodeLzString("compressToBase64", test.Uncompressed);
var uncompress = "";
try
{
uncompress = LZString.DecompressFromBase64(compress);
}
catch (FormatException exc)
{
Assert.Fail($"Invalid Base64 string: '{compress}'{Environment.NewLine}{exc.Message}");
}
Console.WriteLine("lz-string compression result:");
Console.WriteLine(compress);
Assert.That(uncompress, Is.EqualTo(test.Uncompressed));
}
public void DecompressFromBase64Performance()
{
var value = new string('x', 65536);
value = LZString.CompressToBase64(value);
LZString.DecompressFromBase64(value); // Warmup
var timer = new Stopwatch();
timer.Start();
const int times = 1024;
for (var i = 0; i < times; i++)
{
LZString.DecompressFromBase64(value);
}
timer.Stop();
Assert.Pass($"Did {times} decompressions in {timer.Elapsed.TotalSeconds}s. Average: {timer.ElapsedMilliseconds / times}ms");
}
public void DecompressFromBase64(LZStringTestCase test)
{
Assert.That(LZString.DecompressFromBase64(test.CompressedBase64), Is.EqualTo(test.Uncompressed));
}
private static bool TryPrepareSharplabPreview(string url, out string preview)
{
if (!url.Contains("#v2:"))
{
preview = null;
return(false);
}
try
{
// Decode the compressed code from the URL payload
string base64Text = url.Substring(url.IndexOf("#v2:") + "#v2:".Length);
string plainText = LZString.DecompressFromBase64(base64Text);
// Extract the option and get the target language
var textParts = Regex.Match(plainText, @"([^|]*)\|([\s\S]*)$");
var languageOption = Regex.Match(textParts.Groups[1].Value, @"l:(\w+)");
string language = languageOption.Success ? languageOption.Groups[1].Value : "cs";
string sourceCode = textParts.Groups[2].Value;
// Replace the compression tokens
if (language is "cs")
{
sourceCode = Regex.Replace(sourceCode, @"@(\d+|@)", match =>
{
if (match.Value is "@@")
{
return("@");
}
return(_sharplabCSTokens[int.Parse(match.Groups[1].Value)]);
});
// Strip using directives
sourceCode = Regex.Replace(sourceCode, @"using \w+(?:\.\w+)*;", string.Empty);
}
else
{
sourceCode = sourceCode.Replace("@@", "@");
}
// Trim, for good measure
sourceCode = sourceCode.Trim();
// Clip to avoid Discord errors.
// - 2048 is the maximum length
// - 20 is the approximate length of the markdown URL and message
// - 10 is the approximate length of the code highlight markdown
int maximumLength = 2048 - (url.Length + 20 + 10);
if (sourceCode.Length > maximumLength)
{
// Clip at the maximum length
sourceCode = sourceCode.Substring(0, maximumLength);
int lastCarriageIndex = sourceCode.LastIndexOf('\r');
// Remove the last line to avoid having code cut mid-statements
if (lastCarriageIndex > 0)
{
sourceCode = sourceCode.Substring(0, lastCarriageIndex).Trim();
}
}
preview = $"```{language}\r{sourceCode}\r```";
return(true);
}
catch
{
preview = null;
return(false);
}
}
