Class: Sass::CacheStores::Filesystem

Inherits:
Base
  • Object
show all
Defined in:
/home/nweiz/code/sass-site/.sass/lib/sass/cache_stores/filesystem.rb

Overview

A backend for the Sass cache using the filesystem.

Instance Attribute Summary (collapse)

Instance Method Summary (collapse)

Methods inherited from Base

#key, #retrieve, #store

Constructor Details

- (Filesystem) initialize(cache_location)

Returns a new instance of Filesystem

Parameters:



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# File '/home/nweiz/code/sass-site/.sass/lib/sass/cache_stores/filesystem.rb', line 13

def initialize(cache_location)
  @cache_location = cache_location
end

Instance Attribute Details

- (String) cache_location

The directory where the cached files will be stored.

Returns:

  • (String)


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# File '/home/nweiz/code/sass-site/.sass/lib/sass/cache_stores/filesystem.rb', line 10

def cache_location
  @cache_location
end

Instance Method Details

- _retrieve(key, version, sha)

See Also:

  • Base#\_retrieve


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# File '/home/nweiz/code/sass-site/.sass/lib/sass/cache_stores/filesystem.rb', line 18

def _retrieve(key, version, sha)
  return unless File.readable?(path_to(key))
  begin
    File.open(path_to(key), "rb") do |f|
      if f.readline("\n").strip == version && f.readline("\n").strip == sha
        return f.read
      end
    end
    File.unlink path_to(key)
  rescue Errno::ENOENT
    # Already deleted. Race condition?
  end
  nil
rescue EOFError, TypeError, ArgumentError => e
  Sass::Util.sass_warn "Warning. Error encountered while reading cache #{path_to(key)}: #{e}"
end

- _store(key, version, sha, contents)

See Also:

  • Base#\_store


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# File '/home/nweiz/code/sass-site/.sass/lib/sass/cache_stores/filesystem.rb', line 36

def _store(key, version, sha, contents)
  compiled_filename = path_to(key)
  FileUtils.mkdir_p(File.dirname(compiled_filename))
  Sass::Util.atomic_create_and_write_file(compiled_filename) do |f|
    f.puts(version)
    f.puts(sha)
    f.write(contents)
  end
rescue Errno::EACCES
  # pass
end