Class: Dotsmack::Smacker

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

Overview

Smacker dotfile scanner/enumerator.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(dotignore = nil, additional_ignores = [], dotconfig = nil) ⇒ Smacker

Create a Smacker dotfile scanner/enumerator.



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# File 'lib/dotsmack.rb', line 60

def initialize(dotignore = nil, additional_ignores = [], dotconfig = nil)
  @dotignore = dotignore
  @dotconfig = dotconfig
  @additional_ignores = additional_ignores

  @path2dotignore = {}
  @path2dotconfig = {}

  if !dotignore.nil?
    home_dotignore = "#{HOME}#{File::SEPARATOR}#{dotignore}"

    @path2dotignore[PARENT_OF_HOME] = []

    @path2dotignore[HOME] =
      if File.exist?(home_dotignore)
        open(home_dotignore).read.split("\n")
      else
        []
      end
  end

  if !dotconfig.nil?
    home_dotconfig = "#{HOME}#{File::SEPARATOR}#{dotconfig}"

    @path2dotconfig[PARENT_OF_HOME] = nil

    @path2dotconfig[HOME] =
      if File.exist?(home_dotconfig)
        open(home_dotconfig).read
      else
        nil
      end
  end
end

Instance Attribute Details

#additional_ignores ⇒ Object

Returns the value of attribute additional_ignores.



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# File 'lib/dotsmack.rb', line 52

def additional_ignores
  @additional_ignores
end

#dotconfig ⇒ Object

Returns the value of attribute dotconfig.



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# File 'lib/dotsmack.rb', line 52

def dotconfig
  @dotconfig
end

#dotignore ⇒ Object

Returns the value of attribute dotignore.



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# File 'lib/dotsmack.rb', line 52

def dotignore
  @dotignore
end

#path2config ⇒ Object

Returns the value of attribute path2config.



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# File 'lib/dotsmack.rb', line 52

def path2config
  @path2config
end

#path2ignore ⇒ Object

Returns the value of attribute path2ignore.



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# File 'lib/dotsmack.rb', line 52

def path2ignore
  @path2ignore
end

Instance Method Details

#config(path) ⇒ Object

Returns dotconfig for path.



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# File 'lib/dotsmack.rb', line 187

def config(path)
  path = File.absolute_path(path)

  dir =
    if File.directory?(path)
      path
    else
      File.expand_path('..', path)
    end

  relative_to_home = dir.start_with?(HOME)

  if !relative_to_home
    dir = HOME
  end

  scan_for_dotconfig!(dir)

  @path2dotconfig[dir]
end

#enumerate(paths) ⇒ Object

Recursively enumerate files named or nested in paths array.

Skips dotignored files.

Returns [file, dotconfig] pairs.



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# File 'lib/dotsmack.rb', line 215

def enumerate(paths)
  files = []

  paths.each do |path|
    # STDIN idiom
    if path == '-'
      files << [
        path,
        if @dotconfig.nil?
          nil
        else
          config(Dir.pwd)
        end
      ]
    # Skip symlinks
    elsif File.symlink?(path)
      nil
    elsif File.directory?(path) && (@dotignore.nil? || !ignore?(path))
      files.concat(
        enumerate(
          Find.find(path).reject do |p| File.directory?(p) end
        )
      )
    elsif !ignore?(path)
      files << [
          path,
          if @dotconfig.nil?
            nil
          else
            config(path)
          end
      ]
    end
  end

  files
end

#ignore?(path) ⇒ Boolean

Determines whether path is dotignored.



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# File 'lib/dotsmack.rb', line 161

def ignore?(path)
  path = File.absolute_path(path)

  dir =
    if File.directory?(path)
      path
    else
      File.expand_path('..', path)
    end

  relative_to_home = dir.start_with?(HOME)

  if !relative_to_home
    dir = HOME
  end

  scan_for_dotignore!(dir)

  (@path2dotignore[dir] + @additional_ignores).any? do |pattern|
    Dotsmack::fnmatch?(pattern, path)
  end
end

#scan_for_dotconfig!(dir) ⇒ Object

Scan for dotconfig.

Assumes dir is an absolute path. Assumes dir is not a symlink. Assumes dir is $HOME-relative.



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# File 'lib/dotsmack.rb', line 136

def scan_for_dotconfig!(dir)
  if @path2dotconfig.has_key?(dir)
    @path2dotconfig[dir]
  else
    candidate = "#{dir}#{File::SEPARATOR}#{@dotconfig}"

    parent = File.expand_path('..', dir)

    # Use first dotconfig found.
    dotconfig =
      if File.exist?(candidate)
        open(candidate).read
      else
        scan_for_dotconfig!(parent)
      end

    @path2dotconfig[dir] = dotconfig

    dotconfig
  end
end

#scan_for_dotignore!(dir) ⇒ Object

Scan for dotignore.

Assumes dir is an absolute path. Assumes dir is not a symlink. Assumes dir is $HOME-relative.



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# File 'lib/dotsmack.rb', line 102

def scan_for_dotignore!(dir)
  if @path2dotignore.has_key?(dir)
    @path2dotignore[dir]
  else
    candidate = "#{dir}#{File::SEPARATOR}#{@dotignore}"

    dotignore =
      if File.exist?(candidate)
        open(candidate).read.split("\n")
      else
        []
      end

    parent = File.expand_path('..', dir)

    # Determine parent dotignore
    parents_dotignore = scan_for_dotignore!(parent)

    # Merge candidate and parent information
    dotignore.concat(parents_dotignore)

    @path2dotignore[dir] = dotignore

    dotignore
  end
end