Class: Roebe::ExtractGemFile

Inherits:
Base show all
Defined in:
lib/roebe/classes/extract_gem_file.rb

Overview

Roebe::ExtractGemFile

Constant Summary collapse

NAMESPACE =
#

NAMESPACE

#
inspect
FILE_DATA_TR_GZ =
#

FILE_DATA_TR_GZ

#
'data.tar.gz'
ARRAY_THESE_FILES_BELONG_TO_A_GEM_ARCHIVE =
#

ARRAY_THESE_FILES_BELONG_TO_A_GEM_ARCHIVE

#
%w(
  metadata.gz
  data.tar.gz
  checksums.yaml.gz
)
SILENCE =
#

SILENCE

#
' 2>&1'

Constants inherited from Base

Base::COLOURS, Base::HOME_DIRECTORY_OF_USER_X, Base::N

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Base

#append_this_onto_that_file, #append_what_into, #be_silent, #be_verbose?, #beautiful_url, #bold_blue, #burlywood, #call_next, #chdir, #cheerful_guy, #cliner, #convert_global_env, #copy_directory, #copy_file, #cornflowerblue, #create_directory, #crimson, #current_month?, #current_time?, #current_year?, #cyan, #darkcyan, #darkgreen, #darkslateblue, #deeppink, #delete_symlink, #disable_colours, #e, #ecomment, #editor_to_use?, #efancy, #eimp, #ensure_main_encoding, #ensure_utf_encoding, #eparse, #erev, #esystem, #esystem_colourized, #ewarn, #firebrick, #get_current_day, #get_current_month, #get_files_from, #get_german_name_for_this_weekday, #gold, #grey, #hh_mm_ss, #home_dir?, #home_directory_of_user_x?, #is_a_file?, #is_an_image_file?, #is_archive?, #is_audio_file?, #is_in_studium_dir?, #is_multimedia_file?, #is_on_roebe?, #is_on_windows?, #is_symlink?, #is_this_a_ruby_file?, #is_video_file?, #iso_encoding?, #left_colour, #lightblue, #lightgreen, #lightseagreen, #lime, #localhost_to_data, #log_directory?, #main_encoding?, #mediumorchid, #mediumpurple, #mediumseagreen, #mediumspringgreen, #mediumturquoise, #mkdir, #mv, #n_days_in_this_month, #no_file_exists_at, #olivedrab, #open_in_browser, #opne, #opnn, #orange, #orchid, #palegoldenrod, #palevioletred, #pink, #powderblue, #programs_dir?, #random_html_colour, #rds, #read_file_in_iso_encoding, #read_file_via_the_default_encoding, #read_lines_via_iso_encoding, #readlines_with_main_encoding, #red, #register_sigint, #remove, #remove_directory, #remove_file, #rename_kde_konsole_tab, #replace_localhost_with_data, #report_pwd, #return_all_directories_from_this_directory, #return_current_directory, #return_dd_mm_yyyy, #return_file_or_directory_of, #return_files_from_pwd, #return_last_part_of_the_current_directory, #return_utc, #rev, #right_arrow?, #right_colour, #rosybrown, #royalblue, #ruby_base_directory?, #run_in_background, #run_rcfiles_then_run_ata_via_qdbus, #sandybrown, #sdir, #seagreen, #set_be_verbose, #set_xorg_buffer, #sfancy, #sfile, #show_help, #silent_redirection?, #simp, #skyblue, #slateblue, #slategray, #springgreen, #steelblue, #swarn, #symlink, #teal, #to_camelcase, #tomato, #touch, #use_colours?, #verbose_truth, #weekday?, #write_what_into, #yellow

Methods included from Base::CommandlineArguments

#clear_commandline_arguments, #commandline_arguments?, #commandline_arguments_as_string?, #commandline_arguments_without_leading_hyphens?, #first_argument?, #first_argument_without_leading_hyphens?, #has_an_argument_been_passed?, #return_commandline_arguments_with_leading_hyphens, #set_commandline_arguments

Constructor Details

#initialize(i = nil, run_already = true) ⇒ ExtractGemFile

#

initialize

#

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# File 'lib/roebe/classes/extract_gem_file.rb', line 52

def initialize(
    i           = nil,
    run_already = true
  )
  reset
  set_input(i)
  run if run_already
end

Class Method Details

.[](i = '') ⇒ Object

#

Roebe::ExtractGemFile[]

#

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# File 'lib/roebe/classes/extract_gem_file.rb', line 171

def self.[](i = '')
  new(i)
end

Instance Method Details

#input?Boolean

#

input?

#

Returns:

  • (Boolean)

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# File 'lib/roebe/classes/extract_gem_file.rb', line 84

def input?
  @input
end

#main_array_files?Boolean

#

main_array_files?

#

Returns:

  • (Boolean)

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# File 'lib/roebe/classes/extract_gem_file.rb', line 91

def main_array_files?
  ARRAY_THESE_FILES_BELONG_TO_A_GEM_ARCHIVE
end

#name_of_the_gem_itself?Boolean

#

name_of_the_gem_itself?

This method will simply retun the name, without the trailing .gem variant, and also without any '/' as part of the gem-name itself.

#

Returns:

  • (Boolean)

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# File 'lib/roebe/classes/extract_gem_file.rb', line 101

def name_of_the_gem_itself?
  File.basename(input?).sub(/\.gem$/,'')
end

#resetObject

#

reset (reset tag)

#

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# File 'lib/roebe/classes/extract_gem_file.rb', line 64

def reset
  super()
  # ======================================================================= #
  # === @namespace
  # ======================================================================= #
  @namespace = NAMESPACE
end

#runObject

#

run (run tag)

#

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# File 'lib/roebe/classes/extract_gem_file.rb', line 108

def run
  _ = input?
  if File.exist? _
    # ===================================================================== #
    # To extract a .gem file without the .gem utility, we can use this
    # command:
    #
    #   tar -xvf *.gem
    #
    # ===================================================================== #
    opnn; e "Now extracting the .gem file `#{sfancy(_)}`."
    # ===================================================================== #
    # Delegate to "tar" again.
    # ===================================================================== #
    sys_command_to_use = "tar -xvf #{_} --directory=#{Dir.pwd}"
    # ===================================================================== #
    # Just delegate into the backticks (system) - but we should be
    # silent about it.
    # ===================================================================== #
    e sys_command_to_use
    `#{sys_command_to_use}`
    this_dir = name_of_the_gem_itself?.dup+'/' # We require a trailing '/' token.
    opnn; e "Next creating the directory `#{sdir(this_dir)}`."
    mkdir this_dir
    opnn; e 'Next moving three files into that directory.'
    ARRAY_THESE_FILES_BELONG_TO_A_GEM_ARCHIVE.each {|this_file|
      target = this_dir+File.basename(this_file)
      if File.exist? this_file
        opnn; e "Moving into target `#{sfancy(target)}`."
        mv(this_file, target)
      end
    }
    cd this_dir
    if File.exist? FILE_DATA_TR_GZ
      opnn; e 'A file called '+sfile(FILE_DATA_TR_GZ)+
              ' exists (in '+sdir(Dir.pwd)+').'
      opnn; e 'We will next extract that file.'
      # =================================================================== #
      # Next, delegate to "tar" again.
      # =================================================================== #
      sys_command_to_use = 'tar -xvzf '+FILE_DATA_TR_GZ+SILENCE
      e sys_command_to_use
      success_or_file = `#{sys_command_to_use}`
      if success_or_file
        # ================================================================= #
        # In this case, we will also clean up.
        # ================================================================= #
        main_array_files?.each {|this_file|
          delete(this_file) if File.exist? this_file
        }
      end
      opnn; e "Ok - all seems ok. Have a look at the extracted "\
              "directory `#{sdir(this_dir)}`."
      # r2 # Here we could intstall it as well.
    end
  else
    opnn; e "No file called #{sfile(_)} exists."
  end 
end

#set_input(i = '') ⇒ Object

#

set_input

#

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# File 'lib/roebe/classes/extract_gem_file.rb', line 75

def set_input(i = '')
  i = i.first if i.is_a? Array
  i = i.to_s.dup
  @input = i
end