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James Robertson http://www.r0bertson.co.uk

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Reference of keyCodes 

    switch (oEvent.keyCode) {
       case 38: //up arrow  
       case 40: //down arrow
       case 37: //left arrow
       case 39: //right arrow
       case 33: //page up  
       case 34: //page down  
       case 36: //home  
       case 35: //end                  
       case 13: //enter  
       case 9: //tab  
       case 27: //esc  
       case 16: //shift  
       case 17: //ctrl  
       case 18: //alt  
       case 20: //caps lock
       case 8: //backspace  
       case 46: //delete
           return true;
           break;

       default:

Note: When capturing combination keys there is dedicated boolean attributes for each of the special keys (CTRL, SHIFT, ALT).
Reference: Make Life Easy With Autocomplete Textboxes [JavaScript & AJAX Tutorials] [sitepoint.com]
to javascript dom key capture code event keyCode by jrobertson on Apr 02, 2008

Adding new files to your github repository

Here is a set of instructions to apply new files to my github repository which is called projectx.

Before you start make sure you don't already have the repository name listed as a directory in the local current directory.

1) copy the remote repository to your local machine
syntax: git clone [uri] # eg. 
git clone git@github.com:jrobertson/projectx.git

1.5) cd into the newly created local repository eg.
cd projectx

2) copy the local file to the local repository directory
eg. 
cp ../projectx2/feed.rb .

3) add the local files to the local repository
syntax: git add [file] # eg. 
git add feed.rb

4) Inform the git system that you have completed the required changes for this session.
git commit -a # add a message associated with this file revision

5) copy the new local repository files back to the remote repository.
git push # updates the changes back to the server

Note: The text with the square-brackets should be replaced with your own values.

Reference: A tour of git: the basics [cworth.org]
to shell code git projectx github instructions by jrobertson on Mar 25, 2008

Format Ruby code in HTML

This code uses the Ruby gem 'syntax' to create an XML file containing the HTML tags around the code, which is then transformed into an HTML file. The working example was first built using coding examples from Howto format ruby code for blogs [wolfman.com] and Formatting Ruby and HTML code for blog posting [blogspot.com]

#!/usr/bin/ruby

#file: ruby2html.rb 

require 'rubygems'
require 'syntax/convertors/html'
require 'projxslt' # <- this is my own class to do an XSLT transform 
require 'rexml/document'
include REXML

class Ruby2Html
  def initialize(rubyfile, htmlfile)
    code = File.read(rubyfile)
    convertor = Syntax::Convertors::HTML.for_syntax "ruby"
    code_html = convertor.convert(code)
    
    tempfile = '../temp/ruby2html.xml'
    xslfile = '../ruby2html/ruby2html.xsl'
    save_file(tempfile, code_html)
    
    px = Projxslt.new(tempfile, xslfile)
    buffer = px.transform()
    save_file(htmlfile, buffer)
    
  end
  
  def save_file(filename, buffer)
    file = File.new(filename, 'w')
    file.puts buffer
    file.close
  end
end

if __FILE__ == $0
  r2h = Ruby2Html.new('ruby2html.rb', '../temp/ruby2html.html')
  puts 'completed'
end

file: ruby2html.xsl
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
                xmlns="http://www.w3.org/1999/xhtml"
                version="1.0">

  <xsl:output method="html" doctype-public="-//W3C//DTD XHTML 1.0 Transitional//EN"
          doctype-system="http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"
          encoding="ISO-8859-1"/> 

	<xsl:template match="/">
	<xsl:element name="html">

        <head>
          <title>Sample code</title>
          <link rel="stylesheet" type="text/css" href="ruby2html.css" />
	</head>

	<body>
          <div id="wrap">
          <xsl:apply-templates />
          </div>
	</body> 

	</xsl:element>
	</xsl:template>

	<xsl:template match="pre">
	  <xsl:copy-of select="."/>
	</xsl:template>

</xsl:stylesheet>

Here's the output from the formatted Ruby HTML code [twitxr.com]

Referemce: Syntax Manual [rubyforge.org]
to ruby html xml xslt format syntax code by jrobertson on Feb 26, 2008

Generate Ruby code using XML and XSL

This XSL code transforms an XML file into a basic Ruby file. See the previous post ('Transforming an XML file into an XSL file' http://snipr.com/1usrh [dzone.com]) for an example of the XML used.

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
<xsl:output method="text"/>

  <xsl:template match="recordx">
  <xsl:variable name="project" select="summary/project" />
  <xsl:variable name="parent_element" select="summary/parent_element" />
  <xsl:text>#!/usr/bin/ruby
#file: </xsl:text><xsl:value-of select="$project"/><xsl:text>.rb

require 'recordx'

class </xsl:text><xsl:value-of select="$project"/><xsl:text> &lt; RecordX

  def initialize()
    @project = "</xsl:text><xsl:value-of select="$project"/><xsl:text>"
    @parent_element = '</xsl:text><xsl:value-of select="$parent_element"/><xsl:text>fields'
    @proj = Projxml.new
    @doc_vrecord = initialize_xml_class(SERVER_URL + '/' + @project + '/class_template.xml')
    @doc_file = get_doc()
  end
  
end

if __FILE__ == $0
    r = </xsl:text><xsl:value-of select="$project"/><xsl:text>.new()
end
  </xsl:text>
  </xsl:template>
  
</xsl:stylesheet>
to ruby xml xslt generator code by jrobertson on Dec 05, 2007

Translates Morse code from a mobile phone style keypad into plain English

// Translates Morse code specially input from a Nokia 3510i or Nokia 6600 to plain English. I primarily used the button 1 for a dot, 2 for a dash and 5 for the terminator. I later extended the flexibility of the inputs by allowing 4 to be a dot, 7 a dash and 9 as the terminator. eg. ghi = dots pqrs = dashes wxyz = terminators and spaces. 

#!/usr/bin/ruby
#filename: morsecode.rb

require 'net/http'
require 'rexml/document'

include REXML

class Morsecode
  def initialize
    @doc_mlookup = load_lookup('http://jamesrobertson.eu/p/xml/', 'morsecode.xml')
    @doc_charmcode = load_lookup('http://jamesrobertson.eu/p/xml/', 'charmcode.xml')
  end

  def load_lookup(url, filename)
    xml_data = Net::HTTP.get_response(URI.parse(url + filename)).body
    Document.new(xml_data)
  end

  def decode_string(doc, a_buffer)
    pstring = ''
    a_buffer.each do |word|
      pstring += doc.root.elements["code[@encode='" + word + "']"].text
    end
    pstring
  end

  def decode_kstring(buffer)
    decode_string(@doc_charmcode, buffer.scan(/./))
  end

  def decode_mstring(buffer)
    decode_string(@doc_mlookup, buffer.split('4'))
  end

  def decode(buffer)
    decode_mstring(decode_kstring(buffer)) if buffer.length > 0
  end
end

#test
a = Morsecode.new
puts a.decode('gwpwrwgw')
to ruby translate code morse by jrobertson on Oct 03, 2007
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