From 0a735ca4b3bd28dc7760b3db816d13ddc6db56a5 Mon Sep 17 00:00:00 2001
From: David Heinemeier Hansson <david@loudthinking.com>
Date: Fri, 28 Oct 2005 21:21:07 +0000
Subject: Added script/plugin to manage plugins (install, remove, list, etc)
 [Ryan Tomayko]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@2793 5ecf4fe2-1ee6-0310-87b1-e25e094e27de
---
 railties/lib/commands/plugin.rb                    | 745 +++++++++++++++++++++
 .../generators/applications/app/app_generator.rb   |   2 +-
 2 files changed, 746 insertions(+), 1 deletion(-)
 create mode 100644 railties/lib/commands/plugin.rb

(limited to 'railties/lib')

diff --git a/railties/lib/commands/plugin.rb b/railties/lib/commands/plugin.rb
new file mode 100644
index 0000000000..3089c56797
--- /dev/null
+++ b/railties/lib/commands/plugin.rb
@@ -0,0 +1,745 @@
+#!/usr/local/bin/ruby
+
+# 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
+# 
+#   * 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
+#     you can use the built in update command.
+# 
+#   * 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 and is licensed
+# MIT: (http://www.opensource.org/licenses/mit-license.php)
+# 
+# Send patches to rtomayko@gmail.com
+
+$verbose = false
+
+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_externals?
+    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 than 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
+    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 2> /dev/null`
+    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 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)
+    method ||= rails_env.best_install_method?
+    unless installed?
+      send("install_using_#{method}")
+    else
+      puts "already installed: #{name} (#{uri})"
+    end
+  end
+  
+  private 
+    def install_using_export
+      root = rails_env.root
+      mkdir_p "#{root}/vendor/plugins"
+      system("svn export #{uri} #{root}/vendor/plugins/#{name}")
+    end
+    
+    def install_using_checkout
+      root = rails_env.root
+      mkdir_p "#{root}/vendor/plugins"
+      system("svn checkout #{uri} #{root}/vendor/plugins/#{name}")
+    end
+    
+    def install_using_externals
+      externals = rails_env.externals
+      externals.push([@name, uri])
+      rails_env.externals = externals
+      install_using_checkout
+    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="~/.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
+  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
+    <<-REPOSITORIES
+    http://dev.rubyonrails.org/svn/rails/plugins/
+    http://lesscode.org/svn/rtomayko/rails/plugins/
+    http://svn.aviditybytes.com/rails/plugins/
+    REPOSITORIES
+  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 << "/" unless uri =~ /\/$/
+    @uri = uri
+    @plugins = nil
+  end
+  
+  def plugins
+    unless @plugins
+      if $verbose
+        puts "Discovering plugins in #{@uri}" 
+        puts index
+      end
+
+      @plugins = index.split(/\n/).reject{ |line| line !~ /\/$/ }
+      @plugins.map! { |name| Plugin.new(File.join(@uri, name), name) }
+    end
+
+    @plugins
+  end
+  
+  def each(&block)
+    plugins.each(&block)
+  end
+  
+  private
+    def index
+      @index ||= `svn ls #{@uri}`
+    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 from a subversion URL:"
+        o.separator "    #{@script_name} install http://dev.rubyonrails.com/svn/rails/plugins/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"
+      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 "Try: #{$0} --help"
+        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
+      @details = false
+    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|}
+        o.on(         "-l", "--long",
+                      "Long listing / details about each plugin.") {|@details|}
+      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
+            system "svn info #{plugin.uri}" if @details
+          end
+        end
+      else
+        cd "#{@base_command.environment.root}/vendor/plugins"
+        Dir["*"].select{|p| File.directory?(p)}.each do |name| 
+          puts name
+          system "svn info #{name}" if @details
+        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=['"]([^'"]*)['"]/
+          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
+      @externals = false
+      @checkout = false
+      @export = 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(         "-e", "--externals", 
+                      "Use svn:externals. This is the default behavior when", 
+                      "vendor/plugins is under subversion control.") { |@externals| }
+        o.on(         "-o", "--checkout",
+                      "Use checkout. This is turns externals off and is the default",
+                      "behavior when vendor/plugins is not under subversion control.") { |@checkout| }
+        o.on(         "-x", "--export",
+                      "Use export. This turns externals support off and is the default",
+                      "behavior when the current project is not under subversion control.") { |@export| }
+        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
+      requested = case 
+        when @export   then method = :export
+        when @checkout then method = :checkout 
+        else method = :externals
+      end
+      best = @base_command.environment.best_install_method
+      if best == :export and requested != :export
+        puts "Cannot install using #{requested} because this project is not under subversion."
+        exit 1
+      end
+      if best == :checkout and @externals
+        puts "Cannot install using externals because vendor/plugins is not under subversion."
+        exit 1
+      end
+      requested
+    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)
+        else
+          plugin = Repositories.instance.find_plugin(name)
+          unless plugin.nil?
+            plugin.install(install_method)
+          else
+            puts "Plugin not found: #{name}"
+            exit 1
+          end
+        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|
+        path = "#{root}/vendor/plugins/#{name}"
+        if File.directory?(path)
+          rm_r path
+        else
+          puts "Plugin doesn't exist: #{path}"
+        end
+        # clean up svn:externals
+        externals = @base_command.environment.externals
+        externals.reject!{|n,u| name == n or name == u}
+        @base_command.environment.externals = externals
+      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.define_head "Update plugins."
+      end
+    end
+    
+    def parse!(args)
+      options.parse!(args)
+      root = @base_command.environment.root
+      args = Dir["#{root}/vendor/plugins/*"].map do |f|
+        File.directory?("#{f}/.svn") ? File.basename(f) : nil
+      end.compact if args.empty?
+      cd "#{root}/vendor/plugins"
+      args.each do |name|
+        if File.directory?(name)
+          puts "Updating plugin: #{name}"
+          system("svn #{$verbose ? '' : '-q'} up #{name}")
+        else
+          puts "Plugin doesn't exist: #{name}"
+        end
+      end
+    end
+  end
+
+end
+
+Commands::Plugin.parse!
\ No newline at end of file
diff --git a/railties/lib/rails_generator/generators/applications/app/app_generator.rb b/railties/lib/rails_generator/generators/applications/app/app_generator.rb
index 65d6afd9ab..71e0382723 100644
--- a/railties/lib/rails_generator/generators/applications/app/app_generator.rb
+++ b/railties/lib/rails_generator/generators/applications/app/app_generator.rb
@@ -49,7 +49,7 @@ class AppGenerator < Rails::Generator::Base
       m.file "environments/test.rb",        "config/environments/test.rb"
 
       # Scripts
-      %w( breakpointer console destroy generate performance/benchmarker performance/profiler process/reaper process/spawner process/spinner runner server lighttpd ).each do |file|
+      %w( breakpointer console destroy generate performance/benchmarker performance/profiler process/reaper process/spawner process/spinner runner server lighttpd plugin ).each do |file|
         m.file "bin/#{file}", "script/#{file}", script_options
       end
 
-- 
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