Class: Bake::CacheAccess

Inherits:
Object
  • Object
show all
Defined in:
lib/bake/cache.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ CacheAccess

Returns a new instance of CacheAccess.



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# File 'lib/bake/cache.rb', line 23

def initialize()
  if Bake.options.build_config == ""
    @cacheFilename = Bake.options.main_dir+"/.bake/Default.Project.meta.cache"
  else
    @cacheFilename = Bake.options.main_dir+"/.bake/Project.meta." + sanitize_filename(Bake.options.build_config) + ".cache"
  end
  
  FileUtils.mkdir_p(File.dirname(@cacheFilename))
end

Instance Attribute Details

#cacheFilename ⇒ Object (readonly)

Returns the value of attribute cacheFilename.



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# File 'lib/bake/cache.rb', line 21

def cacheFilename
  @cacheFilename
end

Instance Method Details

#load_cache ⇒ Object 



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# File 'lib/bake/cache.rb', line 33

def load_cache
  cache = nil
  begin
    allFiles = Dir.glob(File.dirname(@cacheFilename)+"/*.cache")
    if allFiles.include?(@cacheFilename)
      cacheTime = File.mtime(@cacheFilename)
      contents = File.open(@cacheFilename, "rb") {|io| io.read }
      cache = Marshal.load(contents)
      
      if cache.version != Version.number
        Bake.formatter.printInfo("Info: cache version ("+cache.version+") does not match to bake version ("+Version.number+"), reloading meta information")
        cache = nil
      end
        
      if cache != nil
        if cache.cache_file != @cacheFilename
          Bake.formatter.printInfo("Info: cache filename changed, reloading meta information")
          cache = nil
        end
      end
      
      if cache != nil
        cache.files.each do |c|
          if (not File.exists?(c))
            Bake.options.nocache = true
            Bake.formatter.printInfo("Info: cached meta file #{c} renamed or deleted, reloading meta information")
            cache = nil
            break
          end
        end
      end
      
      if cache != nil
        cache.referencedConfigs.each do |pname,configs|
          configs.each do |config|
            if not File.exists?(config.file_name)
              Bake.options.nocache = true
              Bake.formatter.printInfo("Info: cached meta file #{config.file_name} renamed or deleted, reloading meta information")
              cache = nil
            end
          end
        end  
      end
        
      if cache != nil
        cache.files.each do |c|
          if File.mtime(c) > cacheTime + 1
            Bake.formatter.printInfo("Info: #{c} has been changed, reloading meta information")
            cache = nil
            break
          end
        end
      end

      if cache != nil
        if cache.workspace_roots.length == Bake.options.roots.length
          cache.workspace_roots.each do |r|
            if not Bake.options.roots.include?r
              cache = nil
              break
            end
          end  
        else
          cache = nil
        end
        Bake.formatter.printInfo("Info: specified roots differ from cached roots, reloading meta information") if cache.nil?
      end
      
      if cache != nil
        if (not Bake.options.include_filter.eql?(cache.include_filter)) or (not Bake.options.exclude_filter.eql?(cache.exclude_filter))
          cache = nil
          Bake.formatter.printInfo("Info: specified filters differ from cached filters, reloading meta information")
        end
      end 
      
      if cache != nil
        if (not Bake.options.no_autodir.eql?(cache.no_autodir))
          cache = nil
          Bake.formatter.printInfo("Info: no_autodir option differs in cache, reloading meta information")
        end
      end
      
    else
      Bake.formatter.printInfo("Info: cache not found, reloading meta information")
    end
  rescue Exception
    Bake.formatter.printWarning("Warning: cache file corrupt, reloading meta information (cache might be written by an older bake version)")
    cache = nil
  end      
  
  if cache != nil
    Bake.formatter.printInfo("Info: cache is up-to-date, loading cached meta information") if Bake.options.verbose >= 3
    Bake.options.build_config = cache.build_config if Bake.options.build_config == ""
    return cache.referencedConfigs
  end

  return nil
end

#write_cache(project_files, referencedConfigs) ⇒ Object 



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# File 'lib/bake/cache.rb', line 132

def write_cache(project_files, referencedConfigs)
  cache = Cache.new
  cache.referencedConfigs = referencedConfigs
  cache.files = project_files
  cache.cache_file = @cacheFilename
  cache.version = Version.number
  cache.include_filter = Bake.options.include_filter
  cache.no_autodir = Bake.options.no_autodir
  cache.exclude_filter = Bake.options.exclude_filter
  cache.workspace_roots = Bake.options.roots
  cache.build_config = Bake.options.build_config
  bbdump = Marshal.dump(cache)
  begin
    File.delete(@cacheFilename)
  rescue
  end
  File.open(@cacheFilename, 'wb') {|file| file.write(bbdump) }
  Bake.options.nocache = false
end