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Checkout of Instiki Trunk 1/21/2007.

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Jacques Distler 2007-01-22 07:43:50 -06:00
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vendor/rails/railties/lib/commands/plugin.rb vendored Normal file
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# Rails Plugin Manager.
#
# Listing available plugins:
#
# $ ./script/plugin list
# continuous_builder http://dev.rubyonrails.com/svn/rails/plugins/continuous_builder
# asset_timestamping http://svn.aviditybytes.com/rails/plugins/asset_timestamping
# enumerations_mixin http://svn.protocool.com/rails/plugins/enumerations_mixin/trunk
# calculations http://techno-weenie.net/svn/projects/calculations/
# ...
#
# Installing plugins:
#
# $ ./script/plugin install continuous_builder asset_timestamping
#
# Finding Repositories:
#
# $ ./script/plugin discover
#
# Adding Repositories:
#
# $ ./script/plugin source http://svn.protocool.com/rails/plugins/
#
# How it works:
#
# * Maintains a list of subversion repositories that are assumed to have
# a plugin directory structure. Manage them with the (source, unsource,
# and sources commands)
#
# * The discover command scrapes the following page for things that
# look like subversion repositories with plugins:
# http://wiki.rubyonrails.org/rails/pages/Plugins
#
# * Unless you specify that you want to use svn, script/plugin uses plain old
# HTTP for downloads. The following bullets are true if you specify
# that you want to use svn.
#
# * If `vendor/plugins` is under subversion control, the script will
# modify the svn:externals property and perform an update. You can
# use normal subversion commands to keep the plugins up to date.
#
# * Or, if `vendor/plugins` is not under subversion control, the
# plugin is pulled via `svn checkout` or `svn export` but looks
# exactly the same.
#
# This is Free Software, copyright 2005 by Ryan Tomayko (rtomayko@gmail.com)
# and is licensed MIT: (http://www.opensource.org/licenses/mit-license.php)
$verbose = false
require 'open-uri'
require 'fileutils'
require 'tempfile'
include FileUtils
class RailsEnvironment
attr_reader :root
def initialize(dir)
@root = dir
end
def self.find(dir=nil)
dir ||= pwd
while dir.length > 1
return new(dir) if File.exist?(File.join(dir, 'config', 'environment.rb'))
dir = File.dirname(dir)
end
end
def self.default
@default ||= find
end
def self.default=(rails_env)
@default = rails_env
end
def install(name_uri_or_plugin)
if name_uri_or_plugin.is_a? String
if name_uri_or_plugin =~ /:\/\//
plugin = Plugin.new(name_uri_or_plugin)
else
plugin = Plugins[name_uri_or_plugin]
end
else
plugin = name_uri_or_plugin
end
unless plugin.nil?
plugin.install
else
puts "plugin not found: #{name_uri_or_plugin}"
end
end
def use_svn?
require 'active_support/core_ext/kernel'
silence_stderr {`svn --version` rescue nil}
!$?.nil? && $?.success?
end
def use_externals?
use_svn? && File.directory?("#{root}/vendor/plugins/.svn")
end
def use_checkout?
# this is a bit of a guess. we assume that if the rails environment
# is under subversion then they probably want the plugin checked out
# instead of exported. This can be overridden on the command line
File.directory?("#{root}/.svn")
end
def best_install_method
return :http unless use_svn?
case
when use_externals? then :externals
when use_checkout? then :checkout
else :export
end
end
def externals
return [] unless use_externals?
ext = `svn propget svn:externals "#{root}/vendor/plugins"`
ext.reject{ |line| line.strip == '' }.map do |line|
line.strip.split(/\s+/, 2)
end
end
def externals=(items)
unless items.is_a? String
items = items.map{|name,uri| "#{name.ljust(29)} #{uri.chomp('/')}"}.join("\n")
end
Tempfile.open("svn-set-prop") do |file|
file.write(items)
file.flush
system("svn propset -q svn:externals -F #{file.path} \"#{root}/vendor/plugins\"")
end
end
end
class Plugin
attr_reader :name, :uri
def initialize(uri, name=nil)
@uri = uri
guess_name(uri)
end
def to_s
"#{@name.ljust(30)}#{@uri}"
end
def installed?
File.directory?("#{rails_env.root}/vendor/plugins/#{name}") \
or rails_env.externals.detect{ |name, repo| self.uri == repo }
end
def install(method=nil, options = {})
method ||= rails_env.best_install_method?
method = :export if method == :http and @uri =~ /svn:\/\/*/
uninstall if installed? and options[:force]
unless installed?
send("install_using_#{method}", options)
run_install_hook
else
puts "already installed: #{name} (#{uri}). pass --force to reinstall"
end
end
def uninstall
path = "#{rails_env.root}/vendor/plugins/#{name}"
if File.directory?(path)
puts "Removing 'vendor/plugins/#{name}'" if $verbose
rm_r path
else
puts "Plugin doesn't exist: #{path}"
end
# clean up svn:externals
externals = rails_env.externals
externals.reject!{|n,u| name == n or name == u}
rails_env.externals = externals
end
private
def run_install_hook
install_hook_file = "#{rails_env.root}/vendor/plugins/#{name}/install.rb"
load install_hook_file if File.exists? install_hook_file
end
def install_using_export(options = {})
svn_command :export, options
end
def install_using_checkout(options = {})
svn_command :checkout, options
end
def install_using_externals(options = {})
externals = rails_env.externals
externals.push([@name, uri])
rails_env.externals = externals
install_using_checkout(options)
end
def install_using_http(options = {})
root = rails_env.root
mkdir_p "#{root}/vendor/plugins"
Dir.chdir "#{root}/vendor/plugins"
puts "fetching from '#{uri}'" if $verbose
fetcher = RecursiveHTTPFetcher.new(uri)
fetcher.quiet = true if options[:quiet]
fetcher.fetch
end
def svn_command(cmd, options = {})
root = rails_env.root
mkdir_p "#{root}/vendor/plugins"
base_cmd = "svn #{cmd} #{uri} \"#{root}/vendor/plugins/#{name}\""
base_cmd += ' -q' if options[:quiet] and not $verbose
base_cmd += " -r #{options[:revision]}" if options[:revision]
puts base_cmd if $verbose
system(base_cmd)
end
def guess_name(url)
@name = File.basename(url)
if @name == 'trunk' || @name.empty?
@name = File.basename(File.dirname(url))
end
end
def rails_env
@rails_env || RailsEnvironment.default
end
end
class Repositories
include Enumerable
def initialize(cache_file = File.join(find_home, ".rails-plugin-sources"))
@cache_file = File.expand_path(cache_file)
load!
end
def each(&block)
@repositories.each(&block)
end
def add(uri)
unless find{|repo| repo.uri == uri }
@repositories.push(Repository.new(uri)).last
end
end
def remove(uri)
@repositories.reject!{|repo| repo.uri == uri}
end
def exist?(uri)
@repositories.detect{|repo| repo.uri == uri }
end
def all
@repositories
end
def find_plugin(name)
@repositories.each do |repo|
repo.each do |plugin|
return plugin if plugin.name == name
end
end
return nil
end
def load!
contents = File.exist?(@cache_file) ? File.read(@cache_file) : defaults
contents = defaults if contents.empty?
@repositories = contents.split(/\n/).reject do |line|
line =~ /^\s*#/ or line =~ /^\s*$/
end.map { |source| Repository.new(source.strip) }
end
def save
File.open(@cache_file, 'w') do |f|
each do |repo|
f.write(repo.uri)
f.write("\n")
end
end
end
def defaults
<<-DEFAULTS
http://dev.rubyonrails.com/svn/rails/plugins/
DEFAULTS
end
def find_home
['HOME', 'USERPROFILE'].each do |homekey|
return ENV[homekey] if ENV[homekey]
end
if ENV['HOMEDRIVE'] && ENV['HOMEPATH']
return "#{ENV['HOMEDRIVE']}:#{ENV['HOMEPATH']}"
end
begin
File.expand_path("~")
rescue StandardError => ex
if File::ALT_SEPARATOR
"C:/"
else
"/"
end
end
end
def self.instance
@instance ||= Repositories.new
end
def self.each(&block)
self.instance.each(&block)
end
end
class Repository
include Enumerable
attr_reader :uri, :plugins
def initialize(uri)
@uri = uri.chomp('/') << "/"
@plugins = nil
end
def plugins
unless @plugins
if $verbose
puts "Discovering plugins in #{@uri}"
puts index
end
@plugins = index.reject{ |line| line !~ /\/$/ }
@plugins.map! { |name| Plugin.new(File.join(@uri, name), name) }
end
@plugins
end
def each(&block)
plugins.each(&block)
end
private
def index
@index ||= RecursiveHTTPFetcher.new(@uri).ls
end
end
# load default environment and parse arguments
require 'optparse'
module Commands
class Plugin
attr_reader :environment, :script_name, :sources
def initialize
@environment = RailsEnvironment.default
@rails_root = RailsEnvironment.default.root
@script_name = File.basename($0)
@sources = []
end
def environment=(value)
@environment = value
RailsEnvironment.default = value
end
def options
OptionParser.new do |o|
o.set_summary_indent(' ')
o.banner = "Usage: #{@script_name} [OPTIONS] command"
o.define_head "Rails plugin manager."
o.separator ""
o.separator "GENERAL OPTIONS"
o.on("-r", "--root=DIR", String,
"Set an explicit rails app directory.",
"Default: #{@rails_root}") { |@rails_root| self.environment = RailsEnvironment.new(@rails_root) }
o.on("-s", "--source=URL1,URL2", Array,
"Use the specified plugin repositories instead of the defaults.") { |@sources|}
o.on("-v", "--verbose", "Turn on verbose output.") { |$verbose| }
o.on("-h", "--help", "Show this help message.") { puts o; exit }
o.separator ""
o.separator "COMMANDS"
o.separator " discover Discover plugin repositories."
o.separator " list List available plugins."
o.separator " install Install plugin(s) from known repositories or URLs."
o.separator " update Update installed plugins."
o.separator " remove Uninstall plugins."
o.separator " source Add a plugin source repository."
o.separator " unsource Remove a plugin repository."
o.separator " sources List currently configured plugin repositories."
o.separator ""
o.separator "EXAMPLES"
o.separator " Install a plugin:"
o.separator " #{@script_name} install continuous_builder\n"
o.separator " Install a plugin from a subversion URL:"
o.separator " #{@script_name} install http://dev.rubyonrails.com/svn/rails/plugins/continuous_builder\n"
o.separator " Install a plugin and add a svn:externals entry to vendor/plugins"
o.separator " #{@script_name} install -x continuous_builder\n"
o.separator " List all available plugins:"
o.separator " #{@script_name} list\n"
o.separator " List plugins in the specified repository:"
o.separator " #{@script_name} list --source=http://dev.rubyonrails.com/svn/rails/plugins/\n"
o.separator " Discover and prompt to add new repositories:"
o.separator " #{@script_name} discover\n"
o.separator " Discover new repositories but just list them, don't add anything:"
o.separator " #{@script_name} discover -l\n"
o.separator " Add a new repository to the source list:"
o.separator " #{@script_name} source http://dev.rubyonrails.com/svn/rails/plugins/\n"
o.separator " Remove a repository from the source list:"
o.separator " #{@script_name} unsource http://dev.rubyonrails.com/svn/rails/plugins/\n"
o.separator " Show currently configured repositories:"
o.separator " #{@script_name} sources\n"
end
end
def parse!(args=ARGV)
general, sub = split_args(args)
options.parse!(general)
command = general.shift
if command =~ /^(list|discover|install|source|unsource|sources|remove|update)$/
command = Commands.const_get(command.capitalize).new(self)
command.parse!(sub)
else
puts "Unknown command: #{command}"
puts options
exit 1
end
end
def split_args(args)
left = []
left << args.shift while args[0] and args[0] =~ /^-/
left << args.shift if args[0]
return [left, args]
end
def self.parse!(args=ARGV)
Plugin.new.parse!(args)
end
end
class List
def initialize(base_command)
@base_command = base_command
@sources = []
@local = false
@remote = true
end
def options
OptionParser.new do |o|
o.set_summary_indent(' ')
o.banner = "Usage: #{@base_command.script_name} list [OPTIONS] [PATTERN]"
o.define_head "List available plugins."
o.separator ""
o.separator "Options:"
o.separator ""
o.on( "-s", "--source=URL1,URL2", Array,
"Use the specified plugin repositories.") {|@sources|}
o.on( "--local",
"List locally installed plugins.") {|@local| @remote = false}
o.on( "--remote",
"List remotely availabled plugins. This is the default behavior",
"unless --local is provided.") {|@remote|}
end
end
def parse!(args)
options.order!(args)
unless @sources.empty?
@sources.map!{ |uri| Repository.new(uri) }
else
@sources = Repositories.instance.all
end
if @remote
@sources.map{|r| r.plugins}.flatten.each do |plugin|
if @local or !plugin.installed?
puts plugin.to_s
end
end
else
cd "#{@base_command.environment.root}/vendor/plugins"
Dir["*"].select{|p| File.directory?(p)}.each do |name|
puts name
end
end
end
end
class Sources
def initialize(base_command)
@base_command = base_command
end
def options
OptionParser.new do |o|
o.set_summary_indent(' ')
o.banner = "Usage: #{@base_command.script_name} sources [OPTIONS] [PATTERN]"
o.define_head "List configured plugin repositories."
o.separator ""
o.separator "Options:"
o.separator ""
o.on( "-c", "--check",
"Report status of repository.") { |@sources|}
end
end
def parse!(args)
options.parse!(args)
Repositories.each do |repo|
puts repo.uri
end
end
end
class Source
def initialize(base_command)
@base_command = base_command
end
def options
OptionParser.new do |o|
o.set_summary_indent(' ')
o.banner = "Usage: #{@base_command.script_name} source REPOSITORY"
o.define_head "Add a new repository."
end
end
def parse!(args)
options.parse!(args)
count = 0
args.each do |uri|
if Repositories.instance.add(uri)
puts "added: #{uri.ljust(50)}" if $verbose
count += 1
else
puts "failed: #{uri.ljust(50)}"
end
end
Repositories.instance.save
puts "Added #{count} repositories."
end
end
class Unsource
def initialize(base_command)
@base_command = base_command
end
def options
OptionParser.new do |o|
o.set_summary_indent(' ')
o.banner = "Usage: #{@base_command.script_name} source URI [URI [URI]...]"
o.define_head "Remove repositories from the default search list."
o.separator ""
o.on_tail("-h", "--help", "Show this help message.") { puts o; exit }
end
end
def parse!(args)
options.parse!(args)
count = 0
args.each do |uri|
if Repositories.instance.remove(uri)
count += 1
puts "removed: #{uri.ljust(50)}"
else
puts "failed: #{uri.ljust(50)}"
end
end
Repositories.instance.save
puts "Removed #{count} repositories."
end
end
class Discover
def initialize(base_command)
@base_command = base_command
@list = false
@prompt = true
end
def options
OptionParser.new do |o|
o.set_summary_indent(' ')
o.banner = "Usage: #{@base_command.script_name} discover URI [URI [URI]...]"
o.define_head "Discover repositories referenced on a page."
o.separator ""
o.separator "Options:"
o.separator ""
o.on( "-l", "--list",
"List but don't prompt or add discovered repositories.") { |@list| @prompt = !@list }
o.on( "-n", "--no-prompt",
"Add all new repositories without prompting.") { |v| @prompt = !v }
end
end
def parse!(args)
options.parse!(args)
args = ['http://wiki.rubyonrails.org/rails/pages/Plugins'] if args.empty?
args.each do |uri|
scrape(uri) do |repo_uri|
catch(:next_uri) do
if @prompt
begin
$stdout.print "Add #{repo_uri}? [Y/n] "
throw :next_uri if $stdin.gets !~ /^y?$/i
rescue Interrupt
$stdout.puts
exit 1
end
elsif @list
puts repo_uri
throw :next_uri
end
Repositories.instance.add(repo_uri)
puts "discovered: #{repo_uri}" if $verbose or !@prompt
end
end
end
Repositories.instance.save
end
def scrape(uri)
require 'open-uri'
puts "Scraping #{uri}" if $verbose
dupes = []
content = open(uri).each do |line|
if line =~ /<a[^>]*href=['"]([^'"]*)['"]/ or line =~ /(svn:\/\/[^<|\n]*)/
uri = $1
if uri =~ /\/plugins\// and uri !~ /\/browser\//
uri = extract_repository_uri(uri)
yield uri unless dupes.include?(uri) or Repositories.instance.exist?(uri)
dupes << uri
end
end
end
end
def extract_repository_uri(uri)
uri.match(/(svn|https?):.*\/plugins\//i)[0]
end
end
class Install
def initialize(base_command)
@base_command = base_command
@method = :http
@options = { :quiet => false, :revision => nil, :force => false }
end
def options
OptionParser.new do |o|
o.set_summary_indent(' ')
o.banner = "Usage: #{@base_command.script_name} install PLUGIN [PLUGIN [PLUGIN] ...]"
o.define_head "Install one or more plugins."
o.separator ""
o.separator "Options:"
o.on( "-x", "--externals",
"Use svn:externals to grab the plugin.",
"Enables plugin updates and plugin versioning.") { |v| @method = :externals }
o.on( "-o", "--checkout",
"Use svn checkout to grab the plugin.",
"Enables updating but does not add a svn:externals entry.") { |v| @method = :checkout }
o.on( "-q", "--quiet",
"Suppresses the output from installation.",
"Ignored if -v is passed (./script/plugin -v install ...)") { |v| @options[:quiet] = true }
o.on( "-r REVISION", "--revision REVISION",
"Checks out the given revision from subversion.",
"Ignored if subversion is not used.") { |v| @options[:revision] = v }
o.on( "-f", "--force",
"Reinstalls a plugin if it's already installed.") { |v| @options[:force] = true }
o.separator ""
o.separator "You can specify plugin names as given in 'plugin list' output or absolute URLs to "
o.separator "a plugin repository."
end
end
def determine_install_method
best = @base_command.environment.best_install_method
@method = :http if best == :http and @method == :export
case
when (best == :http and @method != :http)
msg = "Cannot install using subversion because `svn' cannot be found in your PATH"
when (best == :export and (@method != :export and @method != :http))
msg = "Cannot install using #{@method} because this project is not under subversion."
when (best != :externals and @method == :externals)
msg = "Cannot install using externals because vendor/plugins is not under subversion."
end
if msg
puts msg
exit 1
end
@method
end
def parse!(args)
options.parse!(args)
environment = @base_command.environment
install_method = determine_install_method
puts "Plugins will be installed using #{install_method}" if $verbose
args.each do |name|
if name =~ /\// then
::Plugin.new(name).install(install_method, @options)
else
plugin = Repositories.instance.find_plugin(name)
unless plugin.nil?
plugin.install(install_method, @options)
else
puts "Plugin not found: #{name}"
exit 1
end
end
end
end
end
class Update
def initialize(base_command)
@base_command = base_command
end
def options
OptionParser.new do |o|
o.set_summary_indent(' ')
o.banner = "Usage: #{@base_command.script_name} update [name [name]...]"
o.on( "-r REVISION", "--revision REVISION",
"Checks out the given revision from subversion.",
"Ignored if subversion is not used.") { |v| @revision = v }
o.define_head "Update plugins."
end
end
def parse!(args)
options.parse!(args)
root = @base_command.environment.root
cd root
args = Dir["vendor/plugins/*"].map do |f|
File.directory?("#{f}/.svn") ? File.basename(f) : nil
end.compact if args.empty?
cd "vendor/plugins"
args.each do |name|
if File.directory?(name)
puts "Updating plugin: #{name}"
system("svn #{$verbose ? '' : '-q'} up \"#{name}\" #{@revision ? "-r #{@revision}" : ''}")
else
puts "Plugin doesn't exist: #{name}"
end
end
end
end
class Remove
def initialize(base_command)
@base_command = base_command
end
def options
OptionParser.new do |o|
o.set_summary_indent(' ')
o.banner = "Usage: #{@base_command.script_name} remove name [name]..."
o.define_head "Remove plugins."
end
end
def parse!(args)
options.parse!(args)
root = @base_command.environment.root
args.each do |name|
::Plugin.new(name).uninstall
end
end
end
end
class RecursiveHTTPFetcher
attr_accessor :quiet
def initialize(urls_to_fetch, cwd = ".")
@cwd = cwd
@urls_to_fetch = urls_to_fetch.to_a
@quiet = false
end
def ls
@urls_to_fetch.collect do |url|
if url =~ /^svn:\/\/.*/
`svn ls #{url}`.split("\n").map {|entry| "/#{entry}"} rescue nil
else
open(url) do |stream|
links("", stream.read)
end rescue nil
end
end.flatten
end
def push_d(dir)
@cwd = File.join(@cwd, dir)
FileUtils.mkdir_p(@cwd)
end
def pop_d
@cwd = File.dirname(@cwd)
end
def links(base_url, contents)
links = []
contents.scan(/href\s*=\s*\"*[^\">]*/i) do |link|
link = link.sub(/href="/i, "")
next if link =~ /^http/i || link =~ /^\./
links << File.join(base_url, link)
end
links
end
def download(link)
puts "+ #{File.join(@cwd, File.basename(link))}" unless @quiet
open(link) do |stream|
File.open(File.join(@cwd, File.basename(link)), "wb") do |file|
file.write(stream.read)
end
end
end
def fetch(links = @urls_to_fetch)
links.each do |l|
(l =~ /\/$/ || links == @urls_to_fetch) ? fetch_dir(l) : download(l)
end
end
def fetch_dir(url)
push_d(File.basename(url))
open(url) do |stream|
contents = stream.read
fetch(links(url, contents))
end
pop_d
end
end
Commands::Plugin.parse!