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.



21
22
23
24
25
26
 
# File 'lib/image_optim/bin_resolver.rb', line 21

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



16
17
18
 
# File 'lib/image_optim/bin_resolver.rb', line 16

def dir
  @dir
end

#pack_path ⇒ Object (readonly)

Path to pack from image_optim_pack if used



19
20
21
 
# File 'lib/image_optim/bin_resolver.rb', line 19

def pack_path
  @pack_path
end

Class Method Details

.collect_errors(enumerable) ⇒ Object

Collect resolving errors when running block over items of enumerable



68
69
70
71
72
73
74
75
76
77
78
 
# File 'lib/image_optim/bin_resolver.rb', line 68

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



58
59
60
61
62
63
64
65
 
# File 'lib/image_optim/bin_resolver.rb', line 58

def env_path
  [
    dir,
    pack_path,
    ENV['PATH'],
    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



31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
 
# File 'lib/image_optim/bin_resolver.rb', line 31

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