Class: ImageOptim::BinResolver

Inherits:
Object
  • Object
show all
Defined in:
lib/image_optim/bin_resolver.rb,
lib/image_optim/bin_resolver/bin.rb,
lib/image_optim/bin_resolver/error.rb,
lib/image_optim/bin_resolver/simple_version.rb,
lib/image_optim/bin_resolver/comparable_condition.rb

Overview

Handles resolving binaries and checking versions

If there is an environment variable XXX_BIN when resolving xxx, then a symlink to binary will be created in a temporary directory which will be added to PATH

Defined Under Namespace

Classes: Bin, BinNotFound, ComparableCondition, Error, SimpleVersion

Constant Summary collapse

VENDOR_PATH =

Path to vendor at root of image_optim

File.expand_path('../../../vendor', __FILE__)

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(image_optim) ⇒ BinResolver

Returns a new instance of BinResolver.



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# File 'lib/image_optim/bin_resolver.rb', line 23

def initialize(image_optim)
  @image_optim = image_optim
  @bins = {}
  @lock = Mutex.new
  init_pack
end

Instance Attribute Details

#dir ⇒ Object (readonly)

Directory for symlinks to bins if XXX_BIN was used



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# File 'lib/image_optim/bin_resolver.rb', line 18

def dir
  @dir
end

#pack_path ⇒ Object (readonly)

Path to pack from image_optim_pack if used



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# File 'lib/image_optim/bin_resolver.rb', line 21

def pack_path
  @pack_path
end

Class Method Details

.collect_errors(enumerable) ⇒ Object

Collect resolving errors when running block over items of enumerable



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# File 'lib/image_optim/bin_resolver.rb', line 70

def self.collect_errors(enumerable)
  errors = []
  enumerable.each do |item|
    begin
      yield item
    rescue Error => e
      errors << e
    end
  end
  errors
end

Instance Method Details

#env_path ⇒ Object

Prepand ‘dir` and append `VENDOR_PATH` to `PATH` from environment



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# File 'lib/image_optim/bin_resolver.rb', line 60

def env_path
  [
    dir,
    pack_path,
    ENV.fetch('PATH', nil),
    VENDOR_PATH,
  ].compact.join(File::PATH_SEPARATOR)
end

#resolve!(name) ⇒ Object

Binary resolving: create symlink if there is XXX_BIN environment variable, build Bin with full path, check binary version Return Bin instance



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# File 'lib/image_optim/bin_resolver.rb', line 33

def resolve!(name)
  name = name.to_sym

  resolving(name) do
    path = symlink_custom_bin!(name) || full_path(name)
    bin = Bin.new(name, path) if path

    if bin && @image_optim.verbose
      $stderr << "Resolved #{bin}\n"
    end

    @bins[name] = bin

    bin.check! if bin
  end

  fail BinNotFound, "`#{name}` not found" unless @bins[name]

  @bins[name].check_fail!

  @bins[name]
end