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ruby--ruby/lib/rss/0.9.rb
matz 8640f16308 * lib/rss: rss library imported. [ruby-dev:22726]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@5566 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2004-01-28 03:46:13 +00:00

438 lines
8 KiB
Ruby

require "rss/rss"
module RSS
module RSS09
NSPOOL = {}
ELEMENTS = []
end
class Rss < Element
include RSS09
[
["channel", nil],
].each do |tag, occurs|
install_model(tag, occurs)
end
%w(channel).each do |x|
install_have_child_element(x)
end
attr_accessor :rss_version, :version, :encoding, :standalone
def initialize(rss_version, version=nil, encoding=nil, standalone=nil)
super()
@rss_version = rss_version
@version = version || '1.0'
@encoding = encoding
@standalone = standalone
end
def output_encoding=(enc)
@output_encoding = enc
self.converter = Converter.new(@output_encoding, @encoding)
end
def items
if @channel
@channel.items
else
[]
end
end
def image
if @channel
@channel.image
else
nil
end
end
def to_s(convert=true)
rv = <<-EOR
#{xmldecl}
<rss version="#{@rss_version}"#{ns_declaration}>
#{channel_element(false)}
#{other_element(false, "\t")}
</rss>
EOR
rv = @converter.convert(rv) if convert and @converter
rv
end
private
def xmldecl
rv = "<?xml version='#{@version}'"
if @output_encoding or @encoding
rv << " encoding='#{@output_encoding or @encoding}'"
end
rv << " standalone='#{@standalone}'" if @standalone
rv << '?>'
rv
end
def ns_declaration
rv = ''
NSPOOL.each do |prefix, uri|
prefix = ":#{prefix}" unless prefix.empty?
rv << %Q|\n\txmlns#{prefix}="#{uri}"|
end
rv
end
def children
[@channel]
end
class Channel < Element
include RSS09
[
["title", nil],
["link", nil],
["description", nil],
["language", nil],
["copyright", "?"],
["managingEditor", "?"],
["webMaster", "?"],
["rating", "?"],
["docs", "?"],
["skipDays", "?"],
["skipHours", "?"],
].each do |x, occurs|
install_text_element(x)
install_model(x, occurs)
end
[
["pubDate", "?"],
["lastBuildDate", "?"],
].each do |x, occurs|
install_date_element(x, 'rfc822')
install_model(x, occurs)
end
[
["image", nil],
["textInput", "?"],
["cloud", "?"]
].each do |x, occurs|
install_have_child_element(x)
install_model(x, occurs)
end
[
["item", "*"]
].each do |x, occurs|
install_have_children_element(x)
install_model(x, occurs)
end
def initialize()
super()
end
def to_s(convert=true)
rv = <<-EOT
<channel>
#{title_element(false)}
#{link_element(false)}
#{description_element(false)}
#{language_element(false)}
#{copyright_element(false)}
#{managingEditor_element(false)}
#{webMaster_element(false)}
#{rating_element(false)}
#{pubDate_element(false)}
#{lastBuildDate_element(false)}
#{docs_element(false)}
#{skipDays_element(false)}
#{skipHours_element(false)}
#{image_element(false)}
#{item_elements(false)}
#{textInput_element(false)}
#{other_element(false, "\t\t")}
</channel>
EOT
rv = @converter.convert(rv) if convert and @converter
rv
end
private
def children
[@image, @textInput, @cloud, *@item]
end
class Image < Element
include RSS09
%w(url title link width height description).each do |x|
install_text_element(x)
end
def to_s(convert=true)
rv = <<-EOT
<image>
#{url_element(false)}
#{title_element(false)}
#{link_element(false)}
#{width_element(false)}
#{height_element(false)}
#{description_element(false)}
#{other_element(false, "\t\t\t\t")}
</image>
EOT
rv = @converter.convert(rv) if convert and @converter
rv
end
end
class Cloud < Element
include RSS09
[
["domain", nil, false],
["port", nil, false],
["path", nil, false],
["registerProcedure", nil, false],
["protocol", nil ,false],
].each do |name, uri, required|
install_get_attribute(name, uri, required)
end
def to_s(convert=true)
rv = <<-EOT
<cloud
domain="#{h @domain}"
port="#{h @port}"
path="#{h @path}"
registerProcedure="#{h @registerProcedure}"
protocol="#{h @protocol}"/>
EOT
rv = @converter.convert(rv) if convert and @converter
rv
end
end
class Item < Element
include RSS09
%w(title link description author comments).each do |x|
install_text_element(x)
end
%w(category source enclosure).each do |x|
install_have_child_element(x)
end
[
["title", '?'],
["link", '?'],
["description", '?'],
["author", '?'],
["comments", '?'],
["category", '?'],
["source", '?'],
["enclosure", '?'],
].each do |tag, occurs|
install_model(tag, occurs)
end
def to_s(convert=true)
rv = <<-EOT
<item>
#{title_element(false)}
#{link_element(false)}
#{description_element(false)}
#{author_element(false)}
#{category_element(false)}
#{comments_element(false)}
#{enclosure_element(false)}
#{source_element(false)}
#{other_element(false, "\t\t\t\t")}
</item>
EOT
rv = @converter.convert(rv) if convert and @converter
rv
end
class Source < Element
include RSS09
[
["url", nil, true]
].each do |name, uri, required|
install_get_attribute(name, uri, required)
end
content_setup
def initialize(url=nil, content=nil)
super()
@url = url
@content = content
end
def to_s(convert=true)
if @url
rv = %Q! <source url="#{@url}">!
rv << %Q!#{@content}</source>!
rv = @converter.convert(rv) if convert and @converter
rv
else
''
end
end
private
def _attrs
[
["url", true]
]
end
end
class Enclosure < Element
include RSS09
[
["url", nil, true],
["length", nil, true],
["type", nil, true],
].each do |name, uri, required|
install_get_attribute(name, uri, required)
end
def initialize(url=nil, length=nil, type=nil)
super()
@url = url
@length = length
@type = type
end
def to_s(convert=true)
if @url and @length and @type
rv = %Q!<enclosure url="#{h @url}" !
rv << %Q!length="#{h @length}" type="#{h @type}"/>!
rv = @converter.convert(rv) if convert and @converter
rv
else
''
end
end
private
def _attrs
[
["url", true],
["length", true],
["type", true],
]
end
end
class Category < Element
include RSS09
[
["domain", nil, true]
].each do |name, uri, required|
install_get_attribute(name, uri, required)
end
content_setup
def initialize(domain=nil, content=nil)
super()
@domain = domain
@content = content
end
def to_s(convert=true)
if @domain
rv = %Q!<category domain="#{h @domain}">!
rv << %Q!#{h @content}</category>!
rv = @converter.convert(rv) if convert and @converter
rv
else
''
end
end
private
def _attrs
[
["domain", true]
]
end
end
end
class TextInput < Element
include RSS09
%w(title description name link).each do |x|
install_text_element(x)
end
def to_s(convert=true)
rv = <<-EOT
<textInput>
#{title_element(false)}
#{description_element(false)}
#{name_element(false)}
#{link_element(false)}
#{other_element(false, "\t\t\t\t")}
</textInput>
EOT
rv = @converter.convert(rv) if convert and @converter
rv
end
end
end
end
if const_defined?(:BaseListener)
RSS09::ELEMENTS.each do |x|
BaseListener.install_get_text_element(x, nil, "#{x}=")
end
end
if const_defined?(:ListenerMixin)
module ListenerMixin
private
def start_rss(tag_name, prefix, attrs, ns)
check_ns(tag_name, prefix, ns, nil)
@rss = Rss.new(attrs['version'], @version, @encoding, @standalone)
@last_element = @rss
@proc_stack.push Proc.new { |text, tags|
@rss.validate_for_stream(tags) if @do_validate
}
end
end
end
end