Obsidian Code Emitter

This plugin allows code blocks to be executed interactively like in Jupyter Notebooks. It has no external environment requirements (such as system installations of compilers), because code execution works via local sandboxes using JavaScript or WebAssembly technology, or network requests to online Playgrounds. This means it can support all platforms supported by Obsidian.

Supports all Obsidian supported platforms, including:

• Windows
• macOS
• Linux
• Android
• iOS

Supported languages:

Language	Provider
C/C++	Sololearn
C#	Sololearn
Go	Sololearn
Haskell	https://play.haskell.org
HTML & CSS	Shadow DOM
Java	Sololearn
JavaScript	JS Sandbox (qiankun)
Kotlin	https://play.kotlinlang.org
Python	WebAssembly (Pyodide)
R	Sololearn
Rust	https://play.rust-lang.org
Swift	Sololearn
TypeScript	TypeScript Compiler + JS Sandbox
V	https://play.vosca.dev/
Wenyan	Wenyan Compiler + JS Sandbox

Note

Only Python, TypeScript, and JavaScript are run in a local sandbox (JS/WebAssembly). Others will send code to third-party website to evaluate the results (e.g.: https://play.kotlinlang.org, https://play.rust-lang.org). Please take care to avoid sending your potentially-sensitive source code.

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• Obsidian Enhancing Export

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Installation

1. Search Code Emitter in the Community plugins section of Obsidian, and install it.

Examples

Python

Install numpy through micropip. All available packages are listed here (search for whl).

Using numpy

import micropip
await micropip.install('numpy')  
import numpy as np
a = np.random.rand(3,2)
b = np.random.rand(2,5)

print(a@b)

Using matplotlib

import micropip
await micropip.install('matplotlib')

import matplotlib.pyplot as plt

fig, ax = plt.subplots()             # Create a figure containing a single Axes.
ax.plot([1, 2, 3, 4], [1, 4, 2, 3])  # Plot some data on the Axes.
plt.show()                           # Show the figure.

HTML & CSS

<div><span class="h">Hello</span><span class="w">world</span></div>

<style>
.h {
  color: red;
}
.w {
  color: green;
}
</style>

Any languages that support CORS

Here is the example to support Ruby.

const url = 'https://api2.sololearn.com/v2/codeplayground/v2/compile';

const runCode = async (code: string, lang: 'cpp' | 'go' | 'c' | 'java' | 'cs' | 'swift' | 'rb') => {
  const header = {
    'User-Agent': 'Obsidian Code Emitter/0.1.0 (If this is not allowed, please let me know)',
    'Accept': 'application/json, text/plain, */*',
    'Accept-Language': 'en-US',
    'Content-Type': 'application/json',
  };

  const res = await fetch(url, {
    'headers': header,
    'body': JSON.stringify({
      'code': code,
      'codeId': null,
      'input': '',
      'language': lang
    }),
    'method': 'POST',
  });
  return (await res.json()) as {
    success: boolean,
    errors: string[],
    data: {
      sourceCode: number,
      status: number,
      errorCode: number,
      output: string,
      date: string,
      language: string,
      input: string,
    }
  };
};

const ruby_code = `
puts "Hello World12"
`;


console.log((await runCode(ruby_code, 'rb')).data.output);

License

This plugin sandbox contains codes from https://github.com/umijs/qiankun, which is licensed under

• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

And other codes is licensed under

• GPL-3.0 license (LICENSE-GPL-3.0 or https://opensource.org/licenses/GPL-3.0)