Class: Homeostasis::Asset

Inherits:
Stasis::Plugin
  • Object
show all
Includes:
Helpers
Defined in:
lib/homeostasis.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(stasis) ⇒ Asset

Returns a new instance of Asset.



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# File 'lib/homeostasis.rb', line 65

def initialize(stasis)
  @stasis = stasis
  @@matcher = /\.(jpg|png|gif|css|js)/i
  @@replace_matcher = /\.(html|css|js)/i
  @@mapping = {}
  @@concats = {}
  @@orig_concats = {}
end

Class Method Details

.concat(dest, files) ⇒ Object 



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# File 'lib/homeostasis.rb', line 170

def self.concat(dest, files)
  @@concats[dest] = files
end

.config(options) ⇒ Object 



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# File 'lib/homeostasis.rb', line 165

def self.config(options)
  @@matcher = options[:matcher] if options[:matcher]
  @@replace_matcher = options[:replace_matcher] if options[:replace_matcher]
end

.stamped(path, version) ⇒ Object 



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# File 'lib/homeostasis.rb', line 148

def self.stamped(path, version)
  path = path.split('.')
  path.insert(path.length > 1 ? -2 : -1, version)
  path.join('.')
end

.version(paths) ⇒ Object 



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# File 'lib/homeostasis.rb', line 154

def self.version(paths)
  paths = [paths] if !paths.is_a?(Array)
  versions = paths.map do |path|
    log = `git log -n1 #{path} 2> /dev/null`.split("\n")
    log.length > 1 ? log[0].split(' ').last : '0'
  end
  versions.size == 1 ?
    versions[0] :
    Digest::SHA1.hexdigest(versions.join('.'))
end

Instance Method Details

#after_all ⇒ Object 



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# File 'lib/homeostasis.rb', line 96

def after_all
  assets = {}
  strip_dest = (@stasis.destination.length + 1)..-1

  # concatenate files with stamps
  @@orig_concats.each do |concatted, files|
    full_concatted = self.class.stamped(
      File.join(@stasis.destination, concatted),
      self.class.version(files))
    content = files.map do |full_orig|
      orig = full_orig[(@stasis.root.length+1)..-1]
      full_dest = File.join(@stasis.destination, @@mapping[orig])
      raise "File not found #{full_dest}" if !File.exists?(full_dest)
      contents = Helpers.read(full_dest)
      @@mapping.delete(orig)
      File.delete(full_dest)
      contents
    end.join("\n")
    File.open(full_concatted, 'w') { |f| f.print(content) }
    assets[concatted] = full_concatted[strip_dest]
  end

  # stamp files that don't require concatentation
  @@mapping.each do |orig, dest|
    next if dest !~ @@matcher
    full_orig = File.join(@stasis.root, orig)
    full_dest = File.join(@stasis.destination, dest)
    versioned = self.class.stamped(full_dest, self.class.version(full_orig))
    File.rename(full_dest, versioned)
    assets[full_dest[strip_dest]] = versioned[strip_dest]
  end

  # read contents of each file, search/replace assets with stamps
  front_site = Homeostasis::Front._front_site
  inverted = @@mapping.invert
  Dir.glob("#{@stasis.destination}/**/*").each do |file|
    next if file !~ @@replace_matcher || File.directory?(file)
    contents = Helpers.read(file)
    front = front_site[inverted[file.sub("#{@stasis.destination}/", "")]]
    assets.each do |old, new|
      old = Regexp.escape(old)
      contents.gsub!(/([^a-zA-Z0-9\.\-_])#{old}/, "\\1#{new}")
      contents.gsub!(/^#{old}/, new)
      if front && front[:body] # for RSS feed
        front[:body].gsub!(/([^a-zA-Z0-9\.\-_])#{old}/, "\\1#{new}")
        front[:body].gsub!(/^#{old}/, new)
      end
    end
    File.open(file, 'w') { |f| f.print(contents) }
  end
end

#before_all ⇒ Object 



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# File 'lib/homeostasis.rb', line 74

def before_all
  # build mapping of relative filenames => destination
  @stasis.paths.each do |path|
    next if ignore?(path)
    relative = path[(@stasis.root.length+1)..-1]
    ext = Tilt.mappings.keys.find { |ext| File.extname(path)[1..-1] == ext }
    dest = (ext && File.extname(relative) == ".#{ext}") ?
      relative[0..-1*ext.length-2] :
      relative
    @@mapping[relative] = dest
  end

  # build orig_concats of destination => [original filenames,]
  inverted = @@mapping.invert
  @@concats.each do |dest, files|
    @@orig_concats[dest] = files.map do |file|
      raise "Asset not found #{file}" if !inverted.has_key?(file)
      File.join(@stasis.root, inverted[file])
    end
  end
end