dejan/auto_html: Collection of filters that transform plain text into HTML code.

AutoHtml uses concepts found in "Pipes and Filters" processing design pattern: Filter - transforms an input. In AutoHtml context, this is any object that does the transformation through #call(String) method. Filter options should be passed in initializer. AutoHtml provides some filters already, ie Link, Image, Markdown, etc. Pipeline - a composition of filters that transforms input by passing the output of one filter as input for the next filter in line. In AutoHtml context, this is the AutoHtml::Pipeline class. Since the same interface (method #call) is used to pass input, we can say that Pipeline is just another Filter, which means it can be used as a building block for other Pipelines, in a mix with other filters.