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module Rails
module Info
mattr_accessor :properties
class << (@@properties = [])
def names
map { |name, value| name }
end
def value_for(property_name)
if property = find { |name, value| name == property_name }
property.last
end
end
end
class << self #:nodoc:
def property(name, value = nil)
value ||= yield
properties << [name, value] if value
rescue Exception
end
def components
%w( active_record action_pack active_resource action_mailer active_support )
end
def component_version(component)
require "#{component}/version"
"#{component.classify}::VERSION::STRING".constantize
end
def edge_rails_revision(info = svn_info)
info[/^Revision: (\d+)/, 1] || freeze_edge_version
end
def freeze_edge_version
if File.exist?(rails_vendor_root)
begin
Dir[File.join(rails_vendor_root, 'REVISION_*')].first.scan(/_(\d+)$/).first.first
rescue
Dir[File.join(rails_vendor_root, 'TAG_*')].first.scan(/_(.+)$/).first.first rescue 'unknown'
end
end
end
def to_s
column_width = properties.names.map {|name| name.length}.max
["About your application's environment", *properties.map do |property|
"%-#{column_width}s %s" % property
end] * "\n"
end
alias inspect to_s
def to_html
returning table = '<table>' do
properties.each do |(name, value)|
table << %(<tr><td class="name">#{CGI.escapeHTML(name.to_s)}</td>)
table << %(<td class="value">#{CGI.escapeHTML(value.to_s)}</td></tr>)
end
table << '</table>'
end
end
protected
def rails_vendor_root
@rails_vendor_root ||= "#{RAILS_ROOT}/vendor/rails"
end
def svn_info
env_lang, ENV['LC_ALL'] = ENV['LC_ALL'], 'C'
Dir.chdir(rails_vendor_root) do
silence_stderr { `svn info` }
end
ensure
ENV['LC_ALL'] = env_lang
end
end
# The Ruby version and platform, e.g. "1.8.2 (powerpc-darwin8.2.0)".
property 'Ruby version', "#{RUBY_VERSION} (#{RUBY_PLATFORM})"
# The RubyGems version, if it's installed.
property 'RubyGems version' do
Gem::RubyGemsVersion
end
# The Rails version.
property 'Rails version' do
Rails::VERSION::STRING
end
# Versions of each Rails component (Active Record, Action Pack,
# Active Resource, Action Mailer, and Active Support).
components.each do |component|
property "#{component.titlecase} version" do
component_version(component)
end
end
# The Rails SVN revision, if it's checked out into vendor/rails.
property 'Edge Rails revision' do
edge_rails_revision
end
# The application's location on the filesystem.
property 'Application root' do
File.expand_path(RAILS_ROOT)
end
# The current Rails environment (development, test, or production).
property 'Environment' do
RAILS_ENV
end
# The name of the database adapter for the current environment.
property 'Database adapter' do
ActiveRecord::Base.configurations[RAILS_ENV]['adapter']
end
property 'Database schema version' do
ActiveRecord::Migrator.current_version rescue nil
end
end
end
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