public async Task ProcessAsync(FileProcessContext fileProcessContext, PreProcessorDelegate next)
{
var result = await _nodeServices.InvokeAsync <string>(
_nodeScript.Value.FileName, fileProcessContext.FileContent);
fileProcessContext.Update(result);
await next(fileProcessContext);
}
public Task ProcessAsync(FileProcessContext fileProcessContext, PreProcessorDelegate next)
{
if (fileProcessContext.WebFile.DependencyType == WebFileType.Js)
{
throw new InvalidOperationException("Cannot use " + nameof(NuglifyCss) + " with a js file source");
}
var result = Uglify.Css(fileProcessContext.FileContent, fileProcessContext.WebFile.FilePath, _settings.CssCodeSettings);
if (result.HasErrors)
{
//TODO: need to format this exception message nicely
throw new InvalidOperationException(
string.Join(",", result.Errors.Select(x => x.Message)));
}
fileProcessContext.Update(result.Code);
return(next(fileProcessContext));
}
public Task ProcessAsync(FileProcessContext fileProcessContext, PreProcessorDelegate next)
{
//Info for source mapping, see http://ajaxmin.codeplex.com/wikipage?title=SourceMaps
// as an example, see http://ajaxmin.codeplex.com/SourceControl/latest#AjaxMinTask/AjaxMinManifestTask.cs under ProcessJavaScript
// When a source map provider is specified, the process is:
// * Create a string builder/writer to capture the output of the source map
// * Create a sourcemap from the SourceMapFactory based on the provider name
// * Set some V3 source map provider (the default) properties
// * Call StartPackage, passing in the file path of the original file and the file path of the map (which will be appended to the end of the minified output)
// * Do the minification
// * Call EndPackage, and close/dispose of writers
// * Get the source map result from the string builder
if (fileProcessContext.WebFile.DependencyType == WebFileType.Css)
{
throw new InvalidOperationException("Cannot use " + nameof(NuglifyJs) + " with a css file source");
}
var nuglifyJsCodeSettings = _settings.JsCodeSettings;
//Its very important that we clone here because the code settings is a singleton and we are changing it (i.e. the CodeSettings class is mutable)
var codeSettings = nuglifyJsCodeSettings.CodeSettings.Clone();
if (nuglifyJsCodeSettings.SourceMapType != SourceMapType.None)
{
var sourceMap = fileProcessContext.BundleContext.GetSourceMapFromContext(nuglifyJsCodeSettings.SourceMapType);
codeSettings.SymbolsMap = sourceMap;
//These are a couple of options that could be needed for V3 source maps
//sourceRoot is explained here:
// http://blog.teamtreehouse.com/introduction-source-maps
// https://www.html5rocks.com/en/tutorials/developertools/sourcemaps/
//sourceMap.SourceRoot =
//SafeHeader is used to avoid XSS and adds some custom json to the top of the file , here's what the source code says:
// "if we want to add the cross-site script injection protection string" it adds this to the top ")]}'"
// explained here: https://www.html5rocks.com/en/tutorials/developertools/sourcemaps/ under "Potential XSSI issues"
// ** not needed for inline
//sourceMap.SafeHeader =
//generate a minified file path - this is really not used but is used in our inline source map like test.js --> test.min.js
//var extension = Path.GetExtension(fileProcessContext.WebFile.FilePath);
//var minPath = fileProcessContext.WebFile.FilePath.Substring(
// 0,
// fileProcessContext.WebFile.FilePath.LastIndexOf('.')) + ".min" + extension;
//we then need to 'StartPackage', this will be called once per file for the same source map instance but that is ok it doesn't cause any harm
var fileName = fileProcessContext.BundleContext.BundleName + fileProcessContext.BundleContext.FileExtension;
sourceMap.StartPackage(fileName, fileName + ".map");
}
//now do the processing
var result = Uglify.Js(fileProcessContext.FileContent, fileProcessContext.WebFile.FilePath, codeSettings);
if (result.HasErrors)
{
throw new InvalidOperationException(
string.Join(",", result.Errors.Select(x => x.ToString())));
}
fileProcessContext.Update(result.Code);
if (nuglifyJsCodeSettings.SourceMapType != SourceMapType.None)
{
AddSourceMapAppenderToContext(fileProcessContext.BundleContext, nuglifyJsCodeSettings.SourceMapType);
}
return(next(fileProcessContext));
}
public async Task ProcessAsync(FileProcessContext fileProcessContext, PreProcessorDelegate next)
{
await next(fileProcessContext);
fileProcessContext.Update(fileProcessContext.FileContent + "\nFooter");
}
public async Task ProcessAsync(FileProcessContext fileProcessContext, PreProcessorDelegate next)
{
await next(fileProcessContext);
fileProcessContext.Update("Header\n" + fileProcessContext.FileContent);
}
public async Task ProcessAsync(FileProcessContext fileProcessContext, PreProcessorDelegate next)
{
await next(fileProcessContext);
fileProcessContext.Update("WrappedHeader\n" + fileProcessContext.FileContent + "\nWrappedFooter");
}