Class: Bwrap::Args::Environment

Inherits:
Hash
  • Object
show all
Includes:
Execution, Output
Defined in:
lib/bwrap/args/environment.rb

Overview

Environment variable calculation for bwrap.

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Output

debug?, debug_output, error_output, handle_output_options, info_output, quiet?, trace?, trace_output, verb_output, verbose?, warn_output

Methods included from Execution

do_execute, last_status, popen2e

Constructor Details

#initialize ⇒ Environment

Returns a new instance of Environment.



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# File 'lib/bwrap/args/environment.rb', line 15

def initialize
  super

  self["PATH"] ||= []
end

Instance Attribute Details

#config=(value) ⇒ Object (writeonly)

Instance of Config.



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# File 'lib/bwrap/args/environment.rb', line 13

def config=(value)
  @config = value
end

Instance Method Details

#add_to_path(elements) ⇒ Object

Adds given paths to PATH environment variable defined in the sandbox.

Parameters:

  • elements (String, Array) —

    Path(s) to be added added to PATH environment variable



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# File 'lib/bwrap/args/environment.rb', line 56

def add_to_path elements
  if elements.respond_to? :each
    self["PATH"] += elements
  else
    # Expecting elements to be single path element as a string.
    self["PATH"] << elements
  end
end

#env_paths ⇒ Array

Returns All environment paths added via Config#add_env_path and other parsing logic.

Returns:



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# File 'lib/bwrap/args/environment.rb', line 43

def env_paths
  if @config and @config.env_paths.respond_to? :each
    self["PATH"] |= @config.env_paths
  end

  features_env_paths

  self["PATH"]
end

#environment_variables ⇒ Object

Returns used environment variables wrapped as bwrap arguments.



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# File 'lib/bwrap/args/environment.rb', line 22

def environment_variables
  if debug?
    debug "Passing following environment variables to bwrap:\n" \
          "#{self}"
  end

  env_paths

  # If nothing has been added to path, the map would result to empty --setenv.
  return self if empty?

  map do |key, value|
    if key == "PATH" and value.respond_to? :join
      value = value.join ":"
    end

    [ "--setenv", key, value ]
  end
end