Class: Mktemp

Inherits:
Object show all
Includes:
FileUtils
Defined in:
mktemp.rb

Overview

Performs Formula#mktemp’s functionality, and tracks the results. Each instance is only intended to be used once.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(prefix, opts = {}) ⇒ Mktemp

Returns a new instance of Mktemp.



12
13
14
15
16
17
# File 'mktemp.rb', line 12

def initialize(prefix, opts = {})
  @prefix = prefix
  @retain_in_cache = opts[:retain_in_cache]
  @retain = opts[:retain] || @retain_in_cache
  @quiet = false
end

Instance Attribute Details

#tmpdirObject (readonly)

Path to the tmpdir used in this run, as a Pathname.



10
11
12
# File 'mktemp.rb', line 10

def tmpdir
  @tmpdir
end

Instance Method Details

#quiet!void

This method returns an undefined value.

Instructs this Mktemp to not emit messages when retention is triggered.



37
38
39
# File 'mktemp.rb', line 37

def quiet!
  @quiet = true
end

#retain!void

This method returns an undefined value.

Instructs this Mktemp to retain the staged files.



21
22
23
# File 'mktemp.rb', line 21

def retain!
  @retain = true
end

#retain?Boolean

True if the staged temporary files should be retained.

Returns:

  • (Boolean)


26
27
28
# File 'mktemp.rb', line 26

def retain?
  @retain
end

#retain_in_cache?Boolean

True if the source files should be retained.

Returns:

  • (Boolean)


31
32
33
# File 'mktemp.rb', line 31

def retain_in_cache?
  @retain_in_cache
end

#runObject



46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
# File 'mktemp.rb', line 46

def run
  prefix_name = @prefix.tr "@", "AT"
  @tmpdir = if retain_in_cache?
    tmp_dir = HOMEBREW_CACHE/"Sources/#{prefix_name}"
    chmod_rm_rf(tmp_dir) # clear out previous staging directory
    tmp_dir.mkpath
    tmp_dir
  else
    Pathname.new(Dir.mktmpdir("#{prefix_name}-", HOMEBREW_TEMP))
  end

  # Make sure files inside the temporary directory have the same group as the
  # brew instance.
  #
  # Reference from `man 2 open`
  # > When a new file is created, it is given the group of the directory which
  # contains it.
  group_id = if HOMEBREW_BREW_FILE.grpowned?
    HOMEBREW_BREW_FILE.stat.gid
  else
    Process.gid
  end
  begin
    chown(nil, group_id, @tmpdir)
  rescue Errno::EPERM
    opoo "Failed setting group \"#{T.must(Etc.getgrgid(group_id)).name}\" on #{@tmpdir}"
  end

  begin
    Dir.chdir(tmpdir) { yield self }
  ensure
    ignore_interrupts { chmod_rm_rf(@tmpdir) } unless retain?
  end
ensure
  if retain? && @tmpdir.present? && !@quiet
    message = retain_in_cache? ? "Source files for debugging available at:" : "Temporary files retained at:"
    ohai message, @tmpdir.to_s
  end
end

#to_sString

Returns:



42
43
44
# File 'mktemp.rb', line 42

def to_s
  "[Mktemp: #{tmpdir} retain=#{@retain} quiet=#{@quiet}]"
end