public async Task <JObject> GetMarkdownIt(string text)
{
_jsengine = _jsengine ?? JsEngineSwitcher.Instance.CreateDefaultEngine();
var version = "8.4.0";
if (_mardownit == null)
{
_mardownit = await _httpClient.GetStringAsync($"https://raw.githubusercontent.com/markdown-it/markdown-it/{version}/dist/markdown-it.min.js");
_jsengine.Execute(_mardownit);
_jsengine.Evaluate("var MarkdownIt = markdownit();");
}
var inputval = "input_" + Guid.NewGuid().ToString().Replace("-", "_");
_jsengine.SetVariableValue(inputval, text);
var script = $"MarkdownIt.render({inputval});";
var result = _jsengine.Evaluate(script)?.ToString();
_jsengine.RemoveVariable(inputval);
var jsonResult = new JObject
{
["name"] = "markdown-it",
["version"] = version,
["html"] = result
};
return(jsonResult);
}
public override IRow Operate(IRow row)
{
foreach (var field in _input)
{
_engine.SetVariableValue(field.Alias, row[field]);
}
try {
var value = Context.Field.Convert(_engine.Evaluate(Context.Operation.Script));
if (value == null && !_errors.ContainsKey(0))
{
Context.Error($"{_engine.Name} transform in {Context.Field.Alias} returns null!");
_errors[0] = $"{_engine.Name} transform in {Context.Field.Alias} returns null!";
}
else
{
row[Context.Field] = value;
}
} catch (JsRuntimeException jse) {
if (!_errors.ContainsKey(jse.LineNumber))
{
Context.Error("Script: " + Context.Operation.Script.Replace("{", "{{").Replace("}", "}}"));
Context.Error(jse, "Error Message: " + jse.Message);
Context.Error("Variables:");
foreach (var field in _input)
{
Context.Error($"{field.Alias}:{row[field]}");
}
_errors[jse.LineNumber] = jse.Message;
}
}
return(row);
}
public async Task <JObject> GetCommonMarkJs(string text)
{
_jsengine = _jsengine ?? JsEngineSwitcher.Instance.CreateDefaultEngine();
var version = "0.28.1";
if (_commonmarkjs == null)
{
_commonmarkjs = await _httpClient.GetStringAsync($"https://raw.githubusercontent.com/commonmark/commonmark.js/{version}/dist/commonmark.min.js");
_jsengine.Execute(_commonmarkjs);
}
var inputval = "input_" + Guid.NewGuid().ToString().Replace("-", "_");
_jsengine.SetVariableValue(inputval, text);
var script = $"(new commonmark.HtmlRenderer()).render((new commonmark.Parser()).parse({inputval}));";
var result = _jsengine.Evaluate(script)?.ToString();
_jsengine.RemoveVariable(inputval);
var jsonResult = new JObject
{
["name"] = "commonmark.js",
["version"] = version,
["html"] = result
};
return(jsonResult);
}
public static string GetCondition(List <string> constants, List <int> useConstants, string condition, string className)
{
GetJsEngineSwitcher();
return(antiDupCache.GetOrAdd(condition, () =>
{
var js = @"var antlr4={};
antlr4.Token={};
antlr4.Token.EOF=-1;
var {3}={};
{3}.EOF = antlr4.Token.EOF;
{0}
var testNums=[{1}];
var result=[];
for(var i=0;i<testNums.length;i++){
var _la=testNums[i];
if({2}){
result.push(_la)
}
}
outResult=result.join(',');
";
js = js.Replace("{0}", string.Join("\r\n", constants));
js = js.Replace("{1}", string.Join(",", useConstants));
js = js.Replace("{2}", condition);
js = js.Replace("{3}", className);
IJsEngine engine = JsEngineSwitcher.Current.CreateEngine(JintJsEngine.EngineName);
engine.SetVariableValue("outResult", "");
engine.Evaluate(js);
var result = engine.GetVariableValue <string>("outResult");
engine.Dispose();
return result;
}));
}
public string Transform(string markdown)
{
string result;
lock (_compilationSynchronizer)
{
Initialize();
_jsEngine.SetVariableValue("_markdownString", markdown);
result = _jsEngine.Evaluate <string>("markedHelper.compile(_markdownString)");
}
return(HtmlUtility.SanitizeHtml(result));
}
/// <summary>
/// Initializes a Sass compiler
/// </summary>
private void InitializeCompiler()
{
if (_initialized)
{
return;
}
lock (_initializationSynchronizer)
{
if (_initialized)
{
return;
}
string serializedOptions = _jsonSerializer.SerializeObject(_options);
try
{
_jsEngine = _createJsEngineInstance();
_jsEngine.EmbedHostObject(FILE_MANAGER_VARIABLE_NAME, _fileManager);
_jsEngine.SetVariableValue(CURRENT_OS_PLATFORM_NAME, GetCurrentOSPlatformName());
Assembly assembly = this.GetType()
#if !NET40
.GetTypeInfo()
#endif
.Assembly
;
_jsEngine.ExecuteResource(ResourceHelpers.GetResourceName(ES6_POLYFILLS_FILE_NAME), assembly, true);
_jsEngine.ExecuteResource(ResourceHelpers.GetResourceName(SASS_LIBRARY_FILE_NAME), assembly, true);
_jsEngine.ExecuteResource(ResourceHelpers.GetResourceName(SASS_HELPER_FILE_NAME), assembly, true);
_jsEngine.Execute($"var sassHelper = new SassHelper({serializedOptions});");
_version = _jsEngine.Evaluate <string>("SassHelper.getVersion();");
}
catch (JsEngineLoadException e)
{
throw SassErrorHelpers.WrapCompilerLoadException(e);
}
catch (JsException e)
{
throw SassErrorHelpers.WrapCompilerLoadException(e, true);
}
_initialized = true;
}
}
public override object Evaluate(string script, params KeyValuePair <string, object>[] kvp)
{
object result = null;
if (kvp != null)
{
foreach (var obj in kvp)
{
//判定是否为值类型
if (obj.Value.GetType().IsValueType || obj.Value is string)
{
js.SetVariableValue(obj.Key, obj.Value);
}
else
{
js.EmbedHostObject(obj.Key, obj.Value);
}
}
}
try
{
result = js.Evaluate(script);
}
catch (JavaScriptEngineSwitcher.Core.JsException jse)
{
if (jse.InnerException != null)
{
if (jse.InnerException is VroomJs.JsException)
{
var vjse = (VroomJs.JsException)jse.InnerException;
throw new HostJsException(jse.Message, script, vjse.Line, vjse.Column);
}
}
else
{
throw new HostJsException(jse.Message, script, 0, 0);
}
}
return(result);
}
public virtual void SettingAndGettingVariableWithUndefinedValueIsCorrect()
{
// Arrange
const string variableName = "myVar1";
object input = Undefined.Value;
// Act
_jsEngine.SetVariableValue(variableName, input);
bool variableExists = _jsEngine.HasVariable(variableName);
var output = _jsEngine.GetVariableValue(variableName);
// Assert
Assert.IsFalse(variableExists);
Assert.AreEqual(input, output);
}
public void SetVariableValue(string variableName, object value)
{
CheckDisposed();
_engine.SetVariableValue(variableName, value);
}
/// <inheritdoc />
public IEnumerable <IDocument> Execute(IReadOnlyList <IDocument> inputs, IExecutionContext context)
{
HtmlParser parser = new HtmlParser();
using (IJsEnginePool enginePool = context.GetJsEnginePool(x =>
{
if (string.IsNullOrWhiteSpace(_highlightJsFile))
{
x.ExecuteResource("highlight-all.js", typeof(Highlight));
}
else
{
x.ExecuteFile(_highlightJsFile);
}
}))
{
return(inputs.AsParallel().Select(context, input =>
{
// We materialize the list before exiting the using statement, so safe to access enginePool
// ReSharper disable once AccessToDisposedClosure
using (IJsEngine engine = enginePool.GetEngine())
{
try
{
using (Stream stream = input.GetStream())
using (IHtmlDocument htmlDocument = parser.Parse(stream))
{
foreach (AngleSharp.Dom.IElement element in htmlDocument.QuerySelectorAll(_codeQuerySelector))
{
// Don't highlight anything that potentially is already highlighted
if (element.ClassList.Contains("hljs"))
{
continue;
}
// Make sure to use TextContent, otherwise you'll get escaped html which highlight.js won't parse
engine.SetVariableValue("input", element.TextContent);
// Check if they specified a language in their code block
string language = element.ClassList.FirstOrDefault(i => i.StartsWith("language"));
try
{
if (language != null)
{
engine.SetVariableValue("language", language.Replace("language-", ""));
engine.Execute("result = hljs.highlight(language, input)");
}
else
{
language = "(auto)"; // set this to auto in case there is an exception below
engine.Execute("result = hljs.highlightAuto(input)");
string detectedLanguage = engine.Evaluate <string>("result.language");
if (string.IsNullOrWhiteSpace(detectedLanguage) == false)
{
element.ClassList.Add("language-" + detectedLanguage);
}
}
element.ClassList.Add("hljs");
string formatted = engine.Evaluate <string>("result.value");
element.InnerHtml = formatted;
}
catch (Exception innerEx)
{
if (innerEx.Message.Contains("Unknown language: ") && _warnOnMissingLanguage)
{
Trace.Warning("Exception while highlighting source code for {0} using language {1}: {2}", input.SourceString(), language, innerEx.Message);
}
else
{
Trace.Information("Exception while highlighting source code for {0} using language {1}: {2}", input.SourceString(), language, innerEx.Message);
}
}
}
string content = htmlDocument.ToHtml();
return context.GetDocument(input, content);
}
}
catch (Exception ex)
{
Trace.Warning("Exception while highlighting source code for {0}: {1}", input.SourceString(), ex.Message);
return input;
}
}
}).ToList());
}
}
public void SetVariableValue(string variableName, object value)
{
jsEngine.SetVariableValue(variableName, value);
}