insert-equations

Parse README.md files and turn LaTeX equations into SVGs.

Installation

$ npm install insert-equations

Usage

var insertEquations = require( 'insert-equations' );

insertEquations( dir, clbk )

Parses the README.md file in the supplied directory and inserts SVG images for all <equation> tags. The label, align, raw and alt attributes of the equation tag will be used. Upon creating the SVG images, the README.md file will be overwritten with the newly generated markup.

insertEquations( 'mydirectory', done )

function done( err ) {
	if ( err ) {
		throw err;
	}
	console.log( 'README.md file successfully processed.' );
} // end FUNCTION done()

Notes

• As a concrete example

  <!-- <equation class="equation" label="eq:gamma_function_positive_integers" align="center" raw="\Gamma ( n ) = (n-1)!" alt="Gamma function for positive integers."> -->
  <!-- </equation> -->

  will be transformed to

  <!-- <equation class="equation" label="eq:gamma_function_positive_integers" align="center" raw="\Gamma ( n ) = (n-1)!" alt="Gamma function for positive integers."> -->
  <div class="equation" align="center" data-raw-text="\Gamma ( n ) = (n-1)!" data-equation="eq:gamma_function_positive_integers">
  	<img src="https://cdn.rawgit.com/Planeshifter/insert-equations-examples/8fd73c14a23a0bcb1d31e7e3246ae411e11a0c70/docs/img/eqn1.svg" alt="Gamma function for positive integers.">
  	<br>
  </div>
  <!-- </equation> -->

• The supplied directory has to be a git project with a remote branch on GitHub. Otherwise, insertEquations will throw an error.

• Beware: insertEquations automatically creates a commit for the newly created files and changes to README.md.

Examples

var child_process = require( 'child_process' );
var fs = require( 'fs-extra' );
var path = require( 'path' );
var insertEquations = require( 'insert-equations' );

var fPath = path.resolve( __dirname, './fixtures' );
var inputPath = path.join( fPath, '_README.md' );
var outputPath = path.join( fPath, 'README.md' );

fs.copySync( inputPath, outputPath );

child_process.execSync( 'rm -rf .git', { cwd: fPath } );
child_process.execSync( 'git init', { cwd: fPath } );
child_process.execSync( 'git remote add origin https://github.com/Planeshifter/insert-equations-examples.git', { cwd: fPath } );

insertEquations( fPath, done );

function done( err ) {
	if ( err ) {
		throw err;
	}
	console.log( 'README.md file successfully processed.' );
} // end FUNCTION done()

To run the example code from the top-level application directory,

$ node ./examples/index.js

---

CLI

Installation

To use the module as a general utility, install the module globally

$ npm install -g insert-equations

Usage

Usage: insert-equations [options] [directory]

Options:

  -h,    --help                Print this message.
  -V,    --version             Print the package version.

Notes

• If no directory is supplied, the current working directory will be used to look for a README.md file.

Examples

$ insert-equations examples/fixtures

---

Tests

Unit

This repository uses tape for unit tests. To run the tests, execute the following command in the top-level application directory:

$ make test

All new feature development should have corresponding unit tests to validate correct functionality.

Test Coverage

This repository uses Istanbul as its code coverage tool. To generate a test coverage report, execute the following command in the top-level application directory:

$ make test-cov

Istanbul creates a ./reports/coverage directory. To access an HTML version of the report,

$ make view-cov

Browser Support

This repository uses Testling for browser testing. To run the tests in a (headless) local web browser, execute the following command in the top-level application directory:

$ make test-browsers

To view the tests in a local web browser,

$ make view-browser-tests

---

License

MIT license.

Copyright

Copyright © 2016. Philipp Burckhardt.