Initial import

This commit is contained in:
2008-03-02 16:04:34 -03:00
commit 5e4951fa47
798 changed files with 59730 additions and 0 deletions

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module Synthesis
class AssetPackage
# class variables
@@asset_packages_yml = $asset_packages_yml ||
(File.exists?("#{RAILS_ROOT}/config/asset_packages.yml") ? YAML.load_file("#{RAILS_ROOT}/config/asset_packages.yml") : nil)
# singleton methods
class << self
def merge_environments=(environments)
@@merge_environments = environments
end
def merge_environments
@@merge_environments ||= ["production"]
end
def parse_path(path)
/^(?:(.*)\/)?([^\/]+)$/.match(path).to_a
end
def find_by_type(asset_type)
@@asset_packages_yml[asset_type].map { |p| self.new(asset_type, p) }
end
def find_by_target(asset_type, target)
package_hash = @@asset_packages_yml[asset_type].find {|p| p.keys.first == target }
package_hash ? self.new(asset_type, package_hash) : nil
end
def find_by_source(asset_type, source)
path_parts = parse_path(source)
package_hash = @@asset_packages_yml[asset_type].find do |p|
key = p.keys.first
p[key].include?(path_parts[2]) && (parse_path(key)[1] == path_parts[1])
end
package_hash ? self.new(asset_type, package_hash) : nil
end
def targets_from_sources(asset_type, sources)
package_names = Array.new
sources.each do |source|
package = find_by_target(asset_type, source) || find_by_source(asset_type, source)
package_names << (package ? package.current_file : source)
end
package_names.uniq
end
def sources_from_targets(asset_type, targets)
source_names = Array.new
targets.each do |target|
package = find_by_target(asset_type, target)
source_names += (package ? package.sources.collect do |src|
package.target_dir.gsub(/^(.+)$/, '\1/') + src
end : target.to_a)
end
source_names.uniq
end
def build_all
@@asset_packages_yml.keys.each do |asset_type|
@@asset_packages_yml[asset_type].each { |p| self.new(asset_type, p).build }
end
end
def delete_all
@@asset_packages_yml.keys.each do |asset_type|
@@asset_packages_yml[asset_type].each { |p| self.new(asset_type, p).delete_all_builds }
end
end
def create_yml
unless File.exists?("#{RAILS_ROOT}/config/asset_packages.yml")
asset_yml = Hash.new
asset_yml['javascripts'] = [{"base" => build_file_list("#{RAILS_ROOT}/public/javascripts", "js")}]
asset_yml['stylesheets'] = [{"base" => build_file_list("#{RAILS_ROOT}/public/stylesheets", "css")}]
File.open("#{RAILS_ROOT}/config/asset_packages.yml", "w") do |out|
YAML.dump(asset_yml, out)
end
log "config/asset_packages.yml example file created!"
log "Please reorder files under 'base' so dependencies are loaded in correct order."
else
log "config/asset_packages.yml already exists. Aborting task..."
end
end
end
# instance methods
attr_accessor :asset_type, :target, :target_dir, :sources
def initialize(asset_type, package_hash)
target_parts = self.class.parse_path(package_hash.keys.first)
@target_dir = target_parts[1].to_s
@target = target_parts[2].to_s
@sources = package_hash[package_hash.keys.first]
@asset_type = asset_type
@asset_path = ($asset_base_path ? "#{$asset_base_path}/" : "#{RAILS_ROOT}/public/") +
"#{@asset_type}#{@target_dir.gsub(/^(.+)$/, '/\1')}"
@extension = get_extension
@match_regex = Regexp.new("\\A#{@target}_\\d+.#{@extension}\\z")
end
def current_file
@target_dir.gsub(/^(.+)$/, '\1/') +
Dir.new(@asset_path).entries.delete_if { |x| ! (x =~ @match_regex) }.sort.reverse[0].chomp(".#{@extension}")
end
def build
delete_old_builds
create_new_build
end
def delete_old_builds
Dir.new(@asset_path).entries.delete_if { |x| ! (x =~ @match_regex) }.each do |x|
File.delete("#{@asset_path}/#{x}") unless x.index(revision.to_s)
end
end
def delete_all_builds
Dir.new(@asset_path).entries.delete_if { |x| ! (x =~ @match_regex) }.each do |x|
File.delete("#{@asset_path}/#{x}")
end
end
private
def revision
unless @revision
revisions = [1]
@sources.each do |source|
revisions << get_file_revision("#{@asset_path}/#{source}.#{@extension}")
end
@revision = revisions.max
end
@revision
end
def get_file_revision(path)
if File.exists?(path)
begin
`svn info #{path}`[/Last Changed Rev: (.*?)\n/][/(\d+)/].to_i
rescue # use filename timestamp if not in subversion
File.mtime(path).to_i
end
else
0
end
end
def create_new_build
if File.exists?("#{@asset_path}/#{@target}_#{revision}.#{@extension}")
log "Latest version already exists: #{@asset_path}/#{@target}_#{revision}.#{@extension}"
else
File.open("#{@asset_path}/#{@target}_#{revision}.#{@extension}", "w") {|f| f.write(compressed_file) }
log "Created #{@asset_path}/#{@target}_#{revision}.#{@extension}"
end
end
def merged_file
merged_file = ""
@sources.each {|s|
File.open("#{@asset_path}/#{s}.#{@extension}", "r") { |f|
merged_file += f.read + "\n"
}
}
merged_file
end
def compressed_file
case @asset_type
when "javascripts" then compress_js(merged_file)
when "stylesheets" then compress_css(merged_file)
end
end
def compress_js(source)
jsmin_path = "#{RAILS_ROOT}/vendor/plugins/asset_packager/lib"
tmp_path = "#{RAILS_ROOT}/tmp/#{@target}_#{revision}"
# write out to a temp file
File.open("#{tmp_path}_uncompressed.js", "w") {|f| f.write(source) }
# compress file with JSMin library
`ruby #{jsmin_path}/jsmin.rb <#{tmp_path}_uncompressed.js >#{tmp_path}_compressed.js \n`
# read it back in and trim it
result = ""
File.open("#{tmp_path}_compressed.js", "r") { |f| result += f.read.strip }
# delete temp files if they exist
File.delete("#{tmp_path}_uncompressed.js") if File.exists?("#{tmp_path}_uncompressed.js")
File.delete("#{tmp_path}_compressed.js") if File.exists?("#{tmp_path}_compressed.js")
result
end
def compress_css(source)
source.gsub!(/\s+/, " ") # collapse space
source.gsub!(/\/\*(.*?)\*\/ /, "") # remove comments - caution, might want to remove this if using css hacks
source.gsub!(/\} /, "}\n") # add line breaks
source.gsub!(/\n$/, "") # remove last break
source.gsub!(/ \{ /, " {") # trim inside brackets
source.gsub!(/; \}/, "}") # trim inside brackets
source
end
def get_extension
case @asset_type
when "javascripts" then "js"
when "stylesheets" then "css"
end
end
def log(message)
self.class.log(message)
end
def self.log(message)
puts message
end
def self.build_file_list(path, extension)
re = Regexp.new(".#{extension}\\z")
file_list = Dir.new(path).entries.delete_if { |x| ! (x =~ re) }.map {|x| x.chomp(".#{extension}")}
# reverse javascript entries so prototype comes first on a base rails app
file_list.reverse! if extension == "js"
file_list
end
end
end

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module Synthesis
module AssetPackageHelper
def should_merge?
AssetPackage.merge_environments.include?(RAILS_ENV)
end
def javascript_include_merged(*sources)
options = sources.last.is_a?(Hash) ? sources.pop.stringify_keys : { }
if sources.include?(:defaults)
sources = sources[0..(sources.index(:defaults))] +
['prototype', 'effects', 'dragdrop', 'controls'] +
(File.exists?("#{RAILS_ROOT}/public/javascripts/application.js") ? ['application'] : []) +
sources[(sources.index(:defaults) + 1)..sources.length]
sources.delete(:defaults)
end
sources.collect!{|s| s.to_s}
sources = (should_merge? ?
AssetPackage.targets_from_sources("javascripts", sources) :
AssetPackage.sources_from_targets("javascripts", sources))
sources.collect {|source| javascript_include_tag(source, options) }.join("\n")
end
def stylesheet_link_merged(*sources)
options = sources.last.is_a?(Hash) ? sources.pop.stringify_keys : { }
sources.collect!{|s| s.to_s}
sources = (should_merge? ?
AssetPackage.targets_from_sources("stylesheets", sources) :
AssetPackage.sources_from_targets("stylesheets", sources))
sources.collect { |source|
source = stylesheet_path(source)
tag("link", { "rel" => "Stylesheet", "type" => "text/css", "media" => "screen", "href" => source }.merge(options))
}.join("\n")
end
private
# rewrite compute_public_path to allow us to not include the query string timestamp
# used by ActionView::Helpers::AssetTagHelper
def compute_public_path(source, dir, ext=nil, add_asset_id=true)
source = source.dup
source << ".#{ext}" if File.extname(source).blank? && ext
unless source =~ %r{^[-a-z]+://}
source = "/#{dir}/#{source}" unless source[0] == ?/
asset_id = rails_asset_id(source)
source << '?' + asset_id if defined?(RAILS_ROOT) and add_asset_id and not asset_id.blank?
source = "#{ActionController::Base.asset_host}#{@controller.request.relative_url_root}#{source}"
end
source
end
# rewrite javascript path function to not include query string timestamp
def javascript_path(source)
compute_public_path(source, 'javascripts', 'js', false)
end
# rewrite stylesheet path function to not include query string timestamp
def stylesheet_path(source)
compute_public_path(source, 'stylesheets', 'css', false)
end
end
end