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Contents
module Vedeu
# Provides escape sequence strings for setting the cursor position and various
# display related functions.
#
module Esc
include Vedeu::EscapeSequences
extend self
# Return the stream with the escape sequences escaped so that they can be
# printed to the terminal instead of being interpreted by the terminal which
# will render them. This way we can see what escape sequences are being sent
# along with the content.
#
# @param stream [String]
# @return [String]
def escape(stream = '')
return stream if stream.nil? || stream.empty?
stream.gsub(/\e/, '\\e')
end
# Return the escape sequence string from the list of recognised sequence
# 'commands', or an empty string when the 'command' cannot be found.
#
# @param value [String|Symbol]
# @return [String]
def string(value = '')
return '' if value.empty?
send(value.to_sym)
rescue NoMethodError
''
end
# Return the escape sequence to render a border character.
#
# @return [String]
# @yieldreturn [void] The border character to wrap with border on and off
# escape sequences.
def border
return '' unless block_given?
"#{border_on}#{yield}#{border_off}"
end
private
# @return [String]
def clear
"#{colour_reset}\e[2J"
end
# @return [String]
def clear_line
"#{colour_reset}\e[2K"
end
# @return [String]
def colour_reset
"#{fg_reset}#{bg_reset}"
end
# @return [String]
def normal
"#{underline_off}#{bold_off}#{positive}"
end
# @return [String]
def screen_init
"#{reset}#{clear}#{hide_cursor}"
end
# @return [String]
def screen_exit
"#{show_cursor}#{colour_reset}#{reset}#{last_character_position}\n"
end
# @return [String]
def last_character_position
Vedeu::Position[Vedeu.height, Vedeu.width].to_s
end
end # Esc
end # Vedeu
Version data entries
6 entries across 6 versions & 1 rubygems