Module: MarkupExtensionMethods

Included in:
MarkupExtensions::MString
Defined in:
lib/markup_methods/logo.rb,
lib/markup_methods/ahttp.rb,
lib/markup_methods/checklist.rb

Instance Method Summary collapse

Instance Method Details

#ahttp ⇒ Object

This sample extension replaces URL strings in the form:

"http://..."

with links:

"<a href="http://..."

Strings that are already part of 

<a href= ...> or <img src= ...>

or inside 

<code> or <pre>

tags will remain unchanged

(This extension can be used for any markup language.)



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# File 'lib/markup_methods/ahttp.rb', line 16

def ahttp
  gsub( /http:\/\/[^\s><"']+/ ) {
    match = $&; before = $`; after = $'     
    before !~ /\s+(href|src|)\s*=\s*['"]*$/  && 
    after  !~ /^[^<]*<\/a>/  && 
    before !~ /(<code>|<pre>).*$/         ?
      %Q~<a href="#{match}">#{match}</a>~ :
      match
  }
end

#checklist ⇒ Object

This sample extension allows list elements to act as a checklist. If the markup list indicator is followed by a disposition character and a space, this method will make checklist substitutions.

For example, when this method sees this in a Markdown list:

'- x item one'

or this in a Textile list:

'* x item one"

it will substitute: 

'<li <strong>(x)</strong> item one'.

This method recognizes these disposition characters.

x - item completed
0 - item dropped
d - item deferred
@ - item in progress

(this extension can be used for any markup language.)



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# File 'lib/markup_methods/checklist.rb', line 22

def checklist
  gsub(/<li>([x0d@]) (\S)/)  {
    m1 = $1;m2 = $2
    m1 = ">" if m1 == "d"
    "<li><strong>(#{m1.upcase}) </strong>#{m2}"
  }
end

#logo ⇒ Object

This sample extension inserts a company logo. If Markdown contains:

"[logo](home)"

or Textile contains:

"logo":home

The generated HTML contains the company logo and links to the home page.

(This extension can be used for any markup language)



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# File 'lib/markup_methods/logo.rb', line 12

def 
  gsub( /<a href="home">logo<\/a>/ ) { 
    match = $&; before = $`
    if before !~ /(<code>|<pre>).*$/
      %Q~<a href="http://www.google.com">\n~ +
      %Q~<img id="logo" alt="Google"~ +
      %Q~ src="http://www.google.com/images/logos/google_logo.gif"~ + 
      %Q~ style="border: 0 none;">\n~ +
      %Q~</a>\n~
    else
      match
    end
  }
end