Class: Prawndown::Parser

Inherits:
Object
  • Object
show all
Defined in:
lib/prawndown/parser.rb

Overview

Markdown to Prawn parser

Constant Summary collapse

MATCHERS = 
{
  /^# (.+)/                  => '<font size="26"><b>\1</b></font>', # Header 1
  /^## (.+)/                 => '<font size="24"><b>\1</b></font>', # Header 2
  /^### (.+)/                => '<font size="22"><b>\1</b></font>', # Header 3
  /^#### (.+)/               => '<font size="20"><b>\1</b></font>', # Header 4
  /^##### (.+)/              => '<font size="18"><b>\1</b></font>', # Header 5
  /^###### (.+)/             => '<font size="16"><b>\1</b></font>', # Header 6
  /\[([^\[]+)\]\(([^\)]+)\)/ => '<link href="\2">\1</link>',        # Link
  /(\*\*|__)(.*?)\1/         => '<b>\2</b>',                        # Bold
  /(\*|_)(.*?)\1/            => '<i>\2</i>',                        # Italic
  /\~\~(.*?)\~\~/            => '<strikethrough>\1</strikethrough>' # Strikethrough
}

Instance Method Summary collapse

Constructor Details

#initialize(text) ⇒ Parser

Initialize a new Prawndown::Parser. text must a a valid Markdown string that only contains supported tags.

Supported tags are: Header 1-6, bold, italic, strikethrough and link.



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# File 'lib/prawndown/parser.rb', line 21

def initialize(text)
  @text = text.to_s
end

Instance Method Details

#to_prawn ⇒ Object

Parses the Markdown text and outputs a Prawn compatible string



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# File 'lib/prawndown/parser.rb', line 26

def to_prawn
  MATCHERS.inject(@text) do |final_string, (markdown_matcher, prawn_tag)|
    final_string.gsub(markdown_matcher, prawn_tag)
  end
end