Module: MdToBbcode

Defined in:
lib/md_to_bbcode.rb,
lib/md_to_bbcode/version.rb,
lib/md_to_bbcode/core_extensions/string/md_to_bbcode.rb

Defined Under Namespace

Modules: CoreExtensions

Constant Summary collapse

VERSION = 
'1.0.0'

Class Method Summary collapse

Class Method Details

.md_to_bbcode(markdown) ⇒ Object

Convert a Markdown string to Bbcode

Parameters

  • markdown (String): The Markdown string

Result

  • String: BBCode converted string



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# File 'lib/md_to_bbcode.rb', line 11

def self.md_to_bbcode(markdown)
  bbcode_lines = []
  already_in_list = false
  markdown.
    # Images (do this gsub before links and any single tags, like bold, headings...)
    gsub(/!\[(.*?)\]\((.*?)\)/, '[img]\2[/img]').
    # Links
    gsub(/\[(.*?)\]\((.*?)\)/, '[url=\2]\1[/url]').
    # Bold
    gsub(/\*\*(.*?)\*\*/m, '[b]\1[/b]').
    # Heading 1
    gsub(/^# (.*?)$/, '[size=6][b]\1[/b][/size]').
    # Heading 2
    gsub(/^## (.*?)$/, '[size=6]\1[/size]').
    # Heading 3
    gsub(/^### (.*?)$/, '[size=5][b]\1[/b][/size]').
    # Heading 4
    gsub(/^#### (.*?)$/, '[size=5]\1[/size]').
    # Code blocks (do this before in-line code)
    gsub(/```(.*?)\n(.*?)```/m, "[code]\\2[/code]").
    # In-line code
    gsub(/`(.*?)`/, '[b][font=Courier New]\1[/font][/b]').
    # Perform lists transformations
    split("\n").each do |line|
      if line =~ /^\* (.+)$/
        # Single bullet line
        bbcode_lines << '[list]' unless already_in_list
        bbcode_lines << "[*]#{$1}"
        already_in_list = true
      elsif line =~ /^\d\. (.+)$/
        # Single numbered line
        bbcode_lines << '[list=1]' unless already_in_list
        bbcode_lines << "[*]#{$1}"
        already_in_list = true
      else
        if already_in_list && !(line =~ /^  (.*)$/)
          bbcode_lines << '[/list]'
          already_in_list = false
        end
        bbcode_lines << line
      end
    end
  bbcode_lines << '[/list]' if already_in_list
  bbcode_lines << '' if markdown.end_with?("\n")
  bbcode_lines.join("\n")
end