public void TestGetLatexPositionsBasicNoSpaceBeforeOrAfterDelimiter()
{
string markdown =
@"
This is some markdown
## Hello World
$this is some inline latex$
$$This is
some multiline latex$$
";
var markdownLatexPreprocessor = new MarkdownLatexPreprocessor(new KatexJsLatexProcessor());
var latexPositions = markdownLatexPreprocessor.GetLatexPositions(markdown);
Assert.True(latexPositions.Count == 2);
Assert.True(latexPositions[0].LatexString == "this is some inline latex");
var multilineLatex =
@"This is
some multiline latex";
Assert.True(latexPositions[1].LatexString == multilineLatex);
}
public void TestProcessLatexBasic()
{
string markdown =
@"
This is some markdown
## Hello World
$ c = \\pm\\sqrt{a^2 + b^2} $
$$
c = \\pm\\sqrt{a^2 + b^2}
$$
## Bye bye world ...
";
var markdownLatexPreprocessor = new MarkdownLatexPreprocessor(new KatexJsLatexProcessor());
var latexProcessed = markdownLatexPreprocessor.ProcessLatex(markdown);
Assert.NotNull(latexProcessed);
}
public void TestEscapeAllDelimiters()
{
string markdown =
@"
This is some markdown
## Hello World
\$this is some inline latex\$
\$\$This is
some multiline latex\$\$
";
var markdownLatexPreprocessor = new MarkdownLatexPreprocessor(new KatexJsLatexProcessor());
var latexPositions = markdownLatexPreprocessor.GetLatexPositions(markdown);
Assert.True(latexPositions.Count == 0);
}
public void FullMarkdownLatexRenderTest()
{
string markdown =
@"
This is some markdown ...
## Hello world!
$ c = \\pm\\sqrt{a^2 + b^2} $
$$
c = \\pm\\sqrt{a^2 + b^2}
$$
$$E = mc^2$$
### Bye world!
Test empty delimiters 1
$ $
Test empty delimiters 2
$$
$$
";
var markdownLatexPreprocessor = new MarkdownLatexPreprocessor(new KatexJsLatexProcessor());
string fullyRenderedMarkdown = new MarkdownParser(markdownLatexPreprocessor).ParseMarkdownToHtml(markdown, true);
Assert.True(fullyRenderedMarkdown != null);
}
public void TestGetLatexPositionsTextError()
{
string markdown =
@"
This is some markdown
## Hello World
Missing opening delimiter ...
this is some inline latex $
Missing part of closing delimiter ...
$$ This is
some multiline latex
$$ This is
some multiline latex with no terminator
";
var markdownLatexPreprocessor = new MarkdownLatexPreprocessor(new KatexJsLatexProcessor());
var latexPositions = markdownLatexPreprocessor.GetLatexPositions(markdown);
Assert.True(latexPositions.Count == 1);
var multilineLatex =
@"This is
some multiline latex";
Assert.True(latexPositions[0].LatexString == multilineLatex);
}
// Docs: Note processing timings
// Note required package refs
// Note js equivalent library
static void Main(string[] args)
{
// Instantiate KatexJsLatexProcessor. ILatexProcessor provides parsing for raw LaTeX strings.
// ILatexProcessor can be used standalone or within IMarkdownLatexPreprocessor
// The argument jintEngineCount causes KatexJsLatexProcessor
// to create 4 Jint JavaScript Interpreter engine instances and load the KaTeX JS library into
// each. This is because Jint is not thread safe so KatexJsLatexProcessor manages thread safety
// locking during function calls. Multiple instances allows for concurrent processing using a
// round robin algorithm to distribute requests to each Jint engine.
// Argument jintEngineLockTimeout specifies a timeout in milliseconds after which an exception will be thrown
// if a lock cannot be obtained on an instance of the underlying Jint engine if the load on KatexJsLatexProcessor
// is too high. You can set this value as high as needed.
var latexProcessor = new KatexJsLatexProcessor(jintEngineCount: 4, jintEngineLockTimeout: 2000);
// Instantiate MarkdownLatexPreprocessor. IMarkdownLatexPreprocessor provides parsing for LaTeX strings in markdown text.
var markdownLatexPreprocessor = new MarkdownLatexPreprocessor(latexProcessor);
// Services can be instantiated via DI as follows
// services.AddSingleton<ILatexProcessor>(new KatexJsLatexProcessor(4, 2000));
// services.AddSingleton<IMarkdownLatexPreprocessor, MarkdownLatexPreprocessor>();
// Render a raw LaTeX expression.
string latexHtml = latexProcessor.RenderToStringAsync("f(a,b,c) = (a^2+b^2+c^2)^3").Result;
Console.WriteLine("Latex expression output:");
Console.WriteLine(latexHtml);
string markdown = @"
## Example Markdown
This is an example markdown document
This is an expression in inline delmiters ...
$f(a,b,c) = (a^2+b^2+c^2)^3$
... and this one with block delimiters
$$
\sum_{i=1}^\infty\frac{1}{n^2}=\frac{\pi^2}{6}
$$
";
// ... or use MarkdownLatexPreprocessor to process LaTeX expressions within
// markdown text.
var markdownHtml = markdownLatexPreprocessor.ProcessLatex(markdown);
Console.WriteLine("Markdown output:");
Console.WriteLine(markdownHtml);
Console.ReadLine();
}
