gogocurtis · February 28, 2017 07:14
diff --git a/html5_elements.rb b/html5_elements.rb
 def html5elements
  html5 = %%
 <!--...-->	Defines a comment
 <!DOCTYPE> 	Defines the document type
 <a>	Defines a hyperlink
 <abbr>	Defines an abbreviation or an acronym
 <acronym>	Not supported in HTML5. Use <abbr> instead.
 Defines an acronym
 <address>	Defines contact information for the author/owner of a document
 <applet>	Not supported in HTML5. Use <embed> or <object> instead.
 Defines an embedded applet
 <area>	Defines an area inside an image-map
 <article>	Defines an article
 <aside>	Defines content aside from the page content
 <audio>	Defines sound content
 <b>	Defines bold text
 <base>	Specifies the base URL/target for all relative URLs in a document
 <basefont>	Not supported in HTML5. Use CSS instead.
 Specifies a default color, size, and font for all text in a document
 <bdi>	Isolates a part of text that might be formatted in a different direction from other text outside it
 <bdo>	Overrides the current text direction
 <big>	Not supported in HTML5. Use CSS instead.
 Defines big text
 <blockquote>	Defines a section that is quoted from another source
 <body>	Defines the document's body
 <br>	Defines a single line break
 <button>	Defines a clickable button
 <canvas>	Used to draw graphics, on the fly, via scripting (usually JavaScript)
 <caption>	Defines a table caption
 <center>	Not supported in HTML5. Use CSS instead.
 Defines centered text
 <cite>	Defines the title of a work
 <code>	Defines a piece of computer code
 <col>	Specifies column properties for each column within a <colgroup> element 
 <colgroup>	Specifies a group of one or more columns in a table for formatting
 <datalist>	Specifies a list of pre-defined options for input controls
 <dd>	Defines a description/value of a term in a description list
 <del>	Defines text that has been deleted from a document
 <details>	Defines additional details that the user can view or hide
 <dfn>	Represents the defining instance of a term
 <dialog>	Defines a dialog box or window
 <dir>	Not supported in HTML5. Use <ul> instead.
 Defines a directory list
 <div>	Defines a section in a document
 <dl>	Defines a description list
 <dt>	Defines a term/name in a description list
 <em>	Defines emphasized text 
 <embed>	Defines a container for an external (non-HTML) application
 <fieldset>	Groups related elements in a form
 <figcaption>	Defines a caption for a <figure> element
 <figure>	Specifies self-contained content
 <font>	Not supported in HTML5. Use CSS instead.
 Defines font, color, and size for text
 <footer>	Defines a footer for a document or section
 <form>	Defines an HTML form for user input
 <frame>	Not supported in HTML5.
 Defines a window (a frame) in a frameset
 <frameset>	Not supported in HTML5.
 Defines a set of frames
 <h1> to <h6>	Defines HTML headings
 <head>	Defines information about the document
 <header>	Defines a header for a document or section
 <hr>	Defines a thematic change in the content
 <html>	Defines the root of an HTML document
 <i>	Defines a part of text in an alternate voice or mood
 <iframe>	Defines an inline frame
 <img>	Defines an image
 <input>	Defines an input control
 <ins>	Defines a text that has been inserted into a document
 <kbd>	Defines keyboard input
 <keygen>	Defines a key-pair generator field (for forms)
 <label>	Defines a label for an <input> element
 <legend>	Defines a caption for a <fieldset> element
 <li>	Defines a list item
 <link>	Defines the relationship between a document and an external resource (most used to link to style sheets)
 <main>	Specifies the main content of a document
 <map>	Defines a client-side image-map
 <mark>	Defines marked/highlighted text
 <menu>	Defines a list/menu of commands
 <menuitem>	Defines a command/menu item that the user can invoke from a popup menu
 <meta>	Defines metadata about an HTML document
 <meter>	Defines a scalar measurement within a known range (a gauge)
 <nav>	Defines navigation links
 <noframes>	Not supported in HTML5.
 Defines an alternate content for users that do not support frames
 <noscript>	Defines an alternate content for users that do not support client-side scripts
 <object>	Defines an embedded object
 <ol>	Defines an ordered list
 <optgroup>	Defines a group of related options in a drop-down list
 <option>	Defines an option in a drop-down list
 <output>	Defines the result of a calculation
 <p>	Defines a paragraph
 <param>	Defines a parameter for an object
 <picture>	Defines a container for multiple image resources
 <pre>	Defines preformatted text
 <progress>	Represents the progress of a task
 <q>	Defines a short quotation
 <rp>	Defines what to show in browsers that do not support ruby annotations
 <rt>	Defines an explanation/pronunciation of characters (for East Asian typography)
 <ruby>	Defines a ruby annotation (for East Asian typography)
 <s>	Defines text that is no longer correct
 <samp>	Defines sample output from a computer program
 <script>	Defines a client-side script
 <section>	Defines a section in a document
 <select>	Defines a drop-down list
 <small>	Defines smaller text
 <source>	Defines multiple media resources for media elements (<video> and <audio>)
 <span>	Defines a section in a document
 <strike>	Not supported in HTML5. Use <del> or <s> instead.
 Defines strikethrough text
 <strong>	Defines important text
 <style>	Defines style information for a document
 <sub>	Defines subscripted text
 <summary>	Defines a visible heading for a <details> element
 <sup>	Defines superscripted text
 <table>	Defines a table
 <tbody>	Groups the body content in a table
 <td>	Defines a cell in a table
 <textarea>	Defines a multiline input control (text area)
 <tfoot>	Groups the footer content in a table
 <th>	Defines a header cell in a table
 <thead>	Groups the header content in a table
 <time>	Defines a date/time
 <title>	Defines a title for the document
 <tr>	Defines a row in a table
 <track>	Defines text tracks for media elements (<video> and <audio>)
 <tt>	Not supported in HTML5. Use CSS instead.
 Defines teletype text
 <u>	Defines text that should be stylistically different from normal text
 <ul>	Defines an unordered list
 <var>	Defines a variable
 <video>	Defines a video or movie
 <wbr>	Defines a possible line-break
  %

  extract_elements_expression = /
  (?:   # non-match pattern group begin 
  <      # match < start html element
  (       # begin match group one 
  [!-]?    # character class one of ! or -  0 or 1 time
  .+?      # any characters non-greedy 1 or more times
  )       # end match group one
  >      # match > end of html element
  )+    # non-match pattern group end 1 or more times
  .*?   # match any other possible characters
  \n    # match the end of the line
  /mx
  p elements = html5.scan(extract_elements_expression).flatten
  duplicates = elements.group_by{ |e| e }.select { |k, v| v.size > 1 }.map(&:first)
  if duplicates.size > 0
    puts %%text contains #{elements.size} elements%,
      %%#{elements.size - elements.uniq.size} are duplicates%,
      %%Your regular expression is not correct for the text format%
    %%The duplicates are #{duplicates}%
    elements.uniq!
  end
  return elements
 end ; html5elements()
	def html5elements
	html5 = %%
	<!--...--> Defines a comment
	<!DOCTYPE> Defines the document type
	<a> Defines a hyperlink
	<abbr> Defines an abbreviation or an acronym
	<acronym> Not supported in HTML5. Use <abbr> instead.
	Defines an acronym
	<address> Defines contact information for the author/owner of a document
	<applet> Not supported in HTML5. Use <embed> or <object> instead.
	Defines an embedded applet
	<area> Defines an area inside an image-map
	<article> Defines an article
	<aside> Defines content aside from the page content
	<audio> Defines sound content
	<b> Defines bold text
	<base> Specifies the base URL/target for all relative URLs in a document
	<basefont> Not supported in HTML5. Use CSS instead.
	Specifies a default color, size, and font for all text in a document
	<bdi> Isolates a part of text that might be formatted in a different direction from other text outside it
	<bdo> Overrides the current text direction
	<big> Not supported in HTML5. Use CSS instead.
	Defines big text
	<blockquote> Defines a section that is quoted from another source
	<body> Defines the document's body
	<br> Defines a single line break
	<button> Defines a clickable button
	<canvas> Used to draw graphics, on the fly, via scripting (usually JavaScript)
	<caption> Defines a table caption
	<center> Not supported in HTML5. Use CSS instead.
	Defines centered text
	<cite> Defines the title of a work
	<code> Defines a piece of computer code
	<col> Specifies column properties for each column within a <colgroup> element
	<colgroup> Specifies a group of one or more columns in a table for formatting
	<datalist> Specifies a list of pre-defined options for input controls
	<dd> Defines a description/value of a term in a description list
	<del> Defines text that has been deleted from a document
	<details> Defines additional details that the user can view or hide
	<dfn> Represents the defining instance of a term
	<dialog> Defines a dialog box or window
	<dir> Not supported in HTML5. Use <ul> instead.
	Defines a directory list
	<div> Defines a section in a document
	<dl> Defines a description list
	<dt> Defines a term/name in a description list
	<em> Defines emphasized text
	<embed> Defines a container for an external (non-HTML) application
	<fieldset> Groups related elements in a form
	<figcaption> Defines a caption for a <figure> element
	<figure> Specifies self-contained content
	<font> Not supported in HTML5. Use CSS instead.
	Defines font, color, and size for text
	<footer> Defines a footer for a document or section
	<form> Defines an HTML form for user input
	<frame> Not supported in HTML5.
	Defines a window (a frame) in a frameset
	<frameset> Not supported in HTML5.
	Defines a set of frames
	<h1> to <h6> Defines HTML headings
	<head> Defines information about the document
	<header> Defines a header for a document or section
	<hr> Defines a thematic change in the content
	<html> Defines the root of an HTML document
	<i> Defines a part of text in an alternate voice or mood
	<iframe> Defines an inline frame
	<img> Defines an image
	<input> Defines an input control
	<ins> Defines a text that has been inserted into a document
	<kbd> Defines keyboard input
	<keygen> Defines a key-pair generator field (for forms)
	<label> Defines a label for an <input> element
	<legend> Defines a caption for a <fieldset> element
	<li> Defines a list item
	<link> Defines the relationship between a document and an external resource (most used to link to style sheets)
	<main> Specifies the main content of a document
	<map> Defines a client-side image-map
	<mark> Defines marked/highlighted text
	<menu> Defines a list/menu of commands
	<menuitem> Defines a command/menu item that the user can invoke from a popup menu
	<meta> Defines metadata about an HTML document
	<meter> Defines a scalar measurement within a known range (a gauge)
	<nav> Defines navigation links
	<noframes> Not supported in HTML5.
	Defines an alternate content for users that do not support frames
	<noscript> Defines an alternate content for users that do not support client-side scripts
	<object> Defines an embedded object
	<ol> Defines an ordered list
	<optgroup> Defines a group of related options in a drop-down list
	<option> Defines an option in a drop-down list
	<output> Defines the result of a calculation
	<p> Defines a paragraph
	<param> Defines a parameter for an object
	<picture> Defines a container for multiple image resources
	<pre> Defines preformatted text
	<progress> Represents the progress of a task
	<q> Defines a short quotation
	<rp> Defines what to show in browsers that do not support ruby annotations
	<rt> Defines an explanation/pronunciation of characters (for East Asian typography)
	<ruby> Defines a ruby annotation (for East Asian typography)
	<s> Defines text that is no longer correct
	<samp> Defines sample output from a computer program
	<script> Defines a client-side script
	<section> Defines a section in a document
	<select> Defines a drop-down list
	<small> Defines smaller text
	<source> Defines multiple media resources for media elements (<video> and <audio>)
	<span> Defines a section in a document
	<strike> Not supported in HTML5. Use <del> or <s> instead.
	Defines strikethrough text
	<strong> Defines important text
	<style> Defines style information for a document
	<sub> Defines subscripted text
	<summary> Defines a visible heading for a <details> element
	<sup> Defines superscripted text
	<table> Defines a table
	<tbody> Groups the body content in a table
	<td> Defines a cell in a table
	<textarea> Defines a multiline input control (text area)
	<tfoot> Groups the footer content in a table
	<th> Defines a header cell in a table
	<thead> Groups the header content in a table
	<time> Defines a date/time
	<title> Defines a title for the document
	<tr> Defines a row in a table
	<track> Defines text tracks for media elements (<video> and <audio>)
	<tt> Not supported in HTML5. Use CSS instead.
	Defines teletype text
	<u> Defines text that should be stylistically different from normal text
	<ul> Defines an unordered list
	<var> Defines a variable
	<video> Defines a video or movie
	<wbr> Defines a possible line-break
	%

	extract_elements_expression = /
	(?: # non-match pattern group begin
	< # match < start html element
	( # begin match group one
	[!-]? # character class one of ! or - 0 or 1 time
	.+? # any characters non-greedy 1 or more times
	) # end match group one
	> # match > end of html element
	)+ # non-match pattern group end 1 or more times
	.*? # match any other possible characters
	\n # match the end of the line
	/mx
	p elements = html5.scan(extract_elements_expression).flatten
	duplicates = elements.group_by{ \|e\| e }.select { \|k, v\| v.size > 1 }.map(&:first)
	if duplicates.size > 0
	puts %%text contains #{elements.size} elements%,
	%%#{elements.size - elements.uniq.size} are duplicates%,
	%%Your regular expression is not correct for the text format%
	%%The duplicates are #{duplicates}%
	elements.uniq!
	end
	return elements
	end ; html5elements()