A DSL that provides the means to dynamically load libraries and build modules around them including calling extern functions within the C library that has been loaded.

Example

require 'fiddle'
require 'fiddle/import'

module LibSum
  extend Fiddle::Importer
  dlload './libsum.so'
  extern 'double sum(double*, int)'
  extern 'double split(double)'
end

Used to construct C classes (CUnion, CStruct, etc)

Fiddle::Importer#struct and Fiddle::Importer#union wrap this functionality in an easy-to-use manner.

OpenSSL IO buffering mix-in module.

This module allows an OpenSSL::SSL::SSLSocket to behave like an IO.

You typically won’t use this module directly, you can see it implemented in OpenSSL::SSL::SSLSocket.

This module contains configuration information about the SSL extension, for example if socket support is enabled, or the host name TLS extension is enabled. Constants in this module will always be defined, but contain true or false values depending on the configuration of your OpenSSL installation.

Socket::Constants provides socket-related constants. All possible socket constants are listed in the documentation but they may not all be present on your platform.

If the underlying platform doesn’t define a constant the corresponding Ruby constant is not defined.

The WIN32OLE::VARIANT module includes constants of VARIANT type constants. The constants is used when creating WIN32OLE_VARIANT object.

obj = WIN32OLE_VARIANT.new("2e3", WIN32OLE::VARIANT::VT_R4)
obj.value # => 2000.0

The GC profiler provides access to information on GC runs including time, length and object space size.

Example:

GC::Profiler.enable

require 'rdoc/rdoc'

GC::Profiler.report

GC::Profiler.disable

See also GC.count, GC.malloc_allocated_size and GC.malloc_allocations

A utility module for conversion routines, often handy in HTML generation.

The HTTPHeader module defines methods for reading and writing HTTP headers.

It is used as a mixin by other classes, to provide hash-like access to HTTP header values. Unlike raw hash access, HTTPHeader provides access via case-insensitive keys. It also provides methods for accessing commonly-used HTTP header values in more convenient formats.

Module mixed in to all SMTP error classes

Mixin for HTTP and FTP URIs.

Adds named attributes to an object.

A template for stream parser listeners. Note that the declarations (attlistdecl, elementdecl, etc) are trivially processed; REXML doesn’t yet handle doctype entity declarations, so you have to parse them out yourself.

Missing methods from SAX2

ignorable_whitespace

Methods extending SAX2

WARNING These methods are certainly going to change, until DTDs are fully supported. Be aware of this.

start_document
end_document
doctype
elementdecl
attlistdecl
entitydecl
notationdecl
cdata
xmldecl
comment

A template for stream parser listeners. Note that the declarations (attlistdecl, elementdecl, etc) are trivially processed; REXML doesn’t yet handle doctype entity declarations, so you have to parse them out yourself.

RSS 0.9 support

RSS has three different versions. This module contains support for version 0.9.1.

Producing RSS 0.9

Producing our own RSS feeds is easy as well. Let’s make a very basic feed:

require "rss"

rss = RSS::Maker.make("0.91") do |maker|
  maker.channel.language = "en"
  maker.channel.author = "matz"
  maker.channel.updated = Time.now.to_s
  maker.channel.link = "http://www.ruby-lang.org/en/feeds/news.rss"
  maker.channel.title = "Example Feed"
  maker.channel.description = "A longer description of my feed."
  maker.image.url = "http://www.ruby-lang.org/images/logo.gif"
  maker.image.title = "An image"
  maker.items.new_item do |item|
    item.link = "http://www.ruby-lang.org/en/news/2010/12/25/ruby-1-9-2-p136-is-released/"
    item.title = "Ruby 1.9.2-p136 is released"
    item.updated = Time.now.to_s
  end
end

puts rss

As you can see, this is a very Builder-like DSL. This code will spit out an RSS 0.9 feed with one item. If we needed a second item, we’d make another block with maker.items.new_item and build a second one.

RSS 1.0 support

RSS has three different versions. This module contains support for version 1.0

Producing RSS 1.0

Producing our own RSS feeds is easy as well. Let’s make a very basic feed:

require "rss"

rss = RSS::Maker.make("1.0") do |maker|
  maker.channel.language = "en"
  maker.channel.author = "matz"
  maker.channel.about = "About my feed."
  maker.channel.updated = Time.now.to_s
  maker.channel.link = "http://www.ruby-lang.org/en/feeds/news.rss"
  maker.channel.title = "Example Feed"
  maker.channel.description = "A longer description of my feed."
  maker.items.new_item do |item|
    item.link = "http://www.ruby-lang.org/en/news/2010/12/25/ruby-1-9-2-p136-is-released/"
    item.title = "Ruby 1.9.2-p136 is released"
    item.updated = Time.now.to_s
  end
end

puts rss

As you can see, this is a very Builder-like DSL. This code will spit out an RSS 1.0 feed with one item. If we needed a second item, we’d make another block with maker.items.new_item and build a second one.