Class: Flott::Cache

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

Defined Under Namespace

Classes: Page

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(rootdir, reload_time = nil) ⇒ Cache

Creates a Cache that compiles and caches the template files under rootdir. If reload_time in seconds is given, the template files are only reloaded after reload_time seconds even if changed. Negative reload_time means, reload the file always, even if unchanged. (This is good for development, think of changed included templates.)



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# File 'lib/flott/cache.rb', line 54

def initialize(rootdir, reload_time = nil)
  @rootdir      = rootdir
  @reload_time  = reload_time
  @pages        = {}
end

Instance Attribute Details

#reload_time ⇒ Object

Reload time in seconds for the template files of this Cache.



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# File 'lib/flott/cache.rb', line 61

def reload_time
  @reload_time
end

#rootdir ⇒ Object (readonly)

Returns the value of attribute rootdir.



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# File 'lib/flott/cache.rb', line 63

def rootdir
  @rootdir
end

Instance Method Details

#evaluate(name, env = Environment.new) ⇒ Object

Return the cached page name, evaluated in the Environment env.



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# File 'lib/flott/cache.rb', line 88

def evaluate(name, env = Environment.new)
  get(name) { |template| template.evaluate(env) } or return
  self
end

#get(name) ⇒ Object

Return the page that was compiled and/or cached with the name name. If block is given the page is yielded to instead.



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# File 'lib/flott/cache.rb', line 67

def get(name)
  page = @pages[name]
  if page
    if page.changed?
      page.compile
    end
  else
    page = Page.new(self, name)
    page.compile
    put(name, page)
  end
  if block_given?
    yield page.template
    self
  else
    return page.template
  end
rescue Errno::ENOENT, Errno::EISDIR
end