Class: Roebe::IsoToUsb
- Inherits:
-
Base
show all
- Defined in:
- lib/roebe/classes/iso_to_usb.rb
Overview
Constant Summary
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- USE_THIS_AS_THE_DEVICE_POINT =
#
USE_THIS_AS_THE_DEVICE_POINT
This is currently a static default.
#
'/dev/sdc'
Constants inherited
from Base
Base::COLOURS, Base::HOME_DIRECTORY_OF_USER_X, Base::N, Base::NAMESPACE
Class Method Summary
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-
.[](i = '') ⇒ Object
# === Roebe::IsoToUsb[] ========================================================================= #.
Instance Method Summary
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Methods inherited from Base
#actions, #append_this_onto_that_file, #append_what_into, #be_silent, #be_verbose?, #beautiful_url, #burlywood, #call_next, #chdir, #cheerful_guy, #cliner, #complex_esystem, #convert_global_env, #copy_directory, #copy_file, #cornflowerblue, #create_directory, #crimson, #current_month?, #current_time?, #current_year?, #cyan, #darkcyan, #darkgreen, #darkkhaki, #darkslateblue, #deeppink, #delete_symlink, #do_not_use_the_base_colours, #do_use_the_base_colours, #e, #ecomment, #editor_to_use?, #efancy, #eimp, #emphasis, #ensure_main_encoding, #ensure_utf_encoding, #eparse, #erev, #esteelblue, #etomato, #ewarn, #firebrick, #get_current_day, #get_current_month, #get_files_and_directories, #get_files_from, #get_german_name_for_this_weekday, #gold, #green, #grey, #hh_mm_ss, #hh_mm_ss_day_month_year, #home_dir?, #home_directory_of_user_x?, #infer_the_namespace, #internal_hash?, #is_a_directory?, #is_a_file?, #is_a_jpg_file?, #is_an_image_file?, #is_archive?, #is_audio_file?, #is_in_studium_dir?, #is_multimedia_file?, #is_on_roebe?, #is_on_windows?, #is_studium_available?, #is_symlink?, #is_this_a_ruby_file?, #is_video_file?, #iso_encoding?, #le, #left_colour, #lightblue, #lightgreen, #lightseagreen, #lightsteelblue, #lime, #limegreen, #localhost_to_data, #log_directory?, #main_encoding?, #mediumorchid, #mediumpurple, #mediumseagreen, #mediumslateblue, #mediumspringgreen, #mediumturquoise, #mkdir_p, #mv, #n_days_in_this_month, #n_pages_in_this_pdf_file?, #namespace?, #no_file_exists_at, #olivedrab, #open_in_browser, #opne, #opnesystem, #opnn, #orange, #orchid, #palegoldenrod, #palevioletred, #pink, #powderblue, #programs_dir?, #project_base_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, #require_rescue, #reset_the_internal_hash, #return_all_directories_from_this_directory, #return_all_files_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, #roebe_log_directory?, #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, #silent_redirection?, #simp, #simple_esystem, #skyblue, #slateblue, #slategray, #springgreen, #steelblue, #swarn, #symlink, #teal, #temp_dir?, #to_camelcase, #to_counted_hash, #tomato, #touch, #try_to_require_the_beautiful_url_gem, #try_to_require_the_html_template, #try_to_require_the_open_gem, #try_to_require_the_program_information_gem, #try_to_require_the_xorg_buffer, #use_colours?, #verbose_truth, #weekday?, #word_wrap, #write_what_into, #yellow
#append_onto_the_commandline_arguments, #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?, #remove_hyphened_arguments_from_the_commandline_arguments, #return_commandline_arguments_with_leading_hyphens, #second_argument?
Constructor Details
#initialize(use_this_iso_file = nil, run_already = true) ⇒ IsoToUsb
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# File 'lib/roebe/classes/iso_to_usb.rb', line 36
def initialize(
use_this_iso_file = nil,
run_already = true
)
reset
set_commandline_arguments(
use_this_iso_file
)
set_use_this_iso_file(
use_this_iso_file
)
run if run_already
end
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Class Method Details
.[](i = '') ⇒ Object
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# File 'lib/roebe/classes/iso_to_usb.rb', line 232
def self.[](i = '')
new(i)
end
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Instance Method Details
#ask_the_user_whether_it_is_ok_to_run_this_cmd_before_proceeding(i) ⇒ Object
#
ask_the_user_whether_it_is_ok_to_run_this_cmd_before_proceeding
We require the user to specifically say whether it is fine to continue or whether it is not.
#
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# File 'lib/roebe/classes/iso_to_usb.rb', line 196
def ask_the_user_whether_it_is_ok_to_run_this_cmd_before_proceeding(i)
opne 'User confirmation is necessary before we can continue,'
opne 'in order to avoid any damage. Thus, please read the next'
opne 'question carefully before hitting any key.'
e
opne tomato('Is it ok to proceed with the following command? [')+
steelblue('y/n')+
tomato(']')
e
e " #{steelblue(i)}"
e
require 'io/console'
user_input = STDIN.getch
if user_input == 'y'
opne 'Proceeding with the '+steelblue('dd')+
' command ... this may take a while.'
system i
opne 'Done!'
else
opne 'Operation was cancelled.'
end
end
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#
This method will perform the actual step through “dd”, such as in:
'dd if=/path/to/ubuntu.iso of=/dev/sdX bs=4M'
The value bs= defines the block size that is to be used. Using a very small block size means that you will get a lot of “CPU overhead”.
#
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# File 'lib/roebe/classes/iso_to_usb.rb', line 174
def do_perform_the_dd_step(
bs = ' bs=4M'
)
_ = 'dd if='+iso_file?+' of='+target_device?+bs _ = _.dup if _.frozen?
_ << ' conv=fdatasync'
_ << ' status=progress'
e
ask_the_user_whether_it_is_ok_to_run_this_cmd_before_proceeding _
e
end
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#do_sync_step ⇒ Object
#
do_sync_step
The sync bit is important as “dd” can return before the write operation finishes.
#
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# File 'lib/roebe/classes/iso_to_usb.rb', line 107
def do_sync_step
esystem 'sync'
end
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#do_umount_step ⇒ Object
#
do_umount_step (umount tag)
#
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# File 'lib/roebe/classes/iso_to_usb.rb', line 95
def do_umount_step
_ = 'umount '+@target_device
opne 'Performing an umount (un-mount) step next.'
opnesystem _
end
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# File 'lib/roebe/classes/iso_to_usb.rb', line 124
def (
i = commandline_arguments?
)
if i.is_a? Array
i.each {|entry|
(entry)
}
else
case i
when /^-?-?help$/
show_help
exit
when /^-?-?target(-|_)?dev=(.+)$/i set_target_dev($2.to_s.dup)
end
end
end
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# File 'lib/roebe/classes/iso_to_usb.rb', line 53
def reset
super()
infer_the_namespace
@target_device = USE_THIS_AS_THE_DEVICE_POINT
end
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# File 'lib/roebe/classes/iso_to_usb.rb', line 222
def run
do_umount_step
do_perform_the_dd_step
do_sync_step
end
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#set_commandline_arguments(i) ⇒ Object
#
set_commandline_arguments
Note that the commandline arguments are only those that start with a ‘–’.
#
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# File 'lib/roebe/classes/iso_to_usb.rb', line 117
def set_commandline_arguments(i)
@commandline_arguments = i.select {|line| line.start_with? '--' }
end
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#set_target_device(i) ⇒ Object
Also known as:
set_target_dev
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# File 'lib/roebe/classes/iso_to_usb.rb', line 65
def set_target_device(i)
@target_device = i
end
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#set_use_this_iso_file(i = '') ⇒ Object
#
set_use_this_iso_file
#
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# File 'lib/roebe/classes/iso_to_usb.rb', line 79
def set_use_this_iso_file(i = '')
i = i.first if i.is_a? Array
i = i.to_s.dup
@use_this_iso_file = i
end
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#show_help ⇒ Object
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# File 'lib/roebe/classes/iso_to_usb.rb', line 156
def show_help
e
e ' --target-dev= # designate the target device, such as /dev/sdb'
e
e 'The current hardcoded target device entry is '+slateblue(target_device?)
e
end
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#target_device? ⇒ Boolean
Also known as:
device?
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# File 'lib/roebe/classes/iso_to_usb.rb', line 72
def target_device?
@target_device
end
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#use_this_iso_file? ⇒ Boolean
Also known as:
iso_file?
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# File 'lib/roebe/classes/iso_to_usb.rb', line 88
def use_this_iso_file?
@use_this_iso_file
end
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