Class: Jsus::Util::FileCache

Inherits:

Object

• Object
• Jsus::Util::FileCache

show all

Defined in:

lib/jsus/util/file_cache.rb

Overview

Instance Method Summary (collapse)

• - (Object) delete(key)

  Deletes cache entry for given key.

• - (String) fetch(key) { ... }

  Path to stored file.

• - (FileCache) initialize(path) constructor

  Initializes filecache to given directory.

• - (String^?) read(key) (also: #exists?)

  Path to cached file or nil.

• - (String) write(key, value)

  Creates a file with given value for given key in cache directory.

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# File 'lib/jsus/util/file_cache.rb', line 11

def initialize(path)
  @path = path
end

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# File 'lib/jsus/util/file_cache.rb', line 48

def delete(key)
  item_path = generate_path(key)
  if File.exists?(item_path)
    FileUtils.rm_f(item_path)
  end
end

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# File 'lib/jsus/util/file_cache.rb', line 41

def fetch(key, &block)
  read(key) || write(key, yield)
end

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# File 'lib/jsus/util/file_cache.rb', line 31

def read(key)
  item_path = generate_path(key)
  File.exists?(item_path) ? item_path : nil
end

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# File 'lib/jsus/util/file_cache.rb', line 21

def write(key, value)
  item_path = generate_path(key)
  FileUtils.mkdir_p(File.dirname(item_path))
  File.open(item_path, 'w+') {|f| f.write(value) }
  item_path
end