Math to Itex
Convert strings into a proper itex format.
Installation
Add this line to your application's Gemfile:
gem 'math-to-itex'
And then execute:
$ bundle
Or install it yourself as:
$ gem install math-to-itex
Usage
Due to fancy regexes, this gem only works with Ruby 2.0+.
To use this gem, pass a string to the MathToItex
module, and an optional block:
require 'math-to-itex'
result = MathToItex('\[a \ne 0\]').convert
# result is now `$$a \ne 0$$`
result = MathToItex('\[a \ne 0\]').convert { |string| "<span>#{string}</span>" }
# result is now `<span>$$a \ne 0$$</span>`
Basically, by not passing a block, you do a simple convert. By passing a block, you can modify the resulting math equation.
Behind the scenes, MathToItex
uses gsub
, so all equations in a string are
modified.
If you want, you can determine the type (inline or display), too:
result = MathToItex('$0$ is not equal to $$1 = 0$$').convert do |string, type|
%|<span class="#{type}">#{string}</span>|
end
# result is `<span class="inline">$0$</span> is not equal to <span class="display">$$1 = 0$$</span>`
Matched math notations
Currently, the following formats are supported:
inline formulas | display formulas |
---|---|
$...$ |
$$...$$ |
\(...\) |
\[...\] |
ย | \begin{equation}...\end{equation} |
More math stuff
Check out Mathematical, which quickly converts itex notation equations into beautiful SVGs.