module Byebug::FileFunctions
Utilities for interaction with files
Public Instance Methods
get_line(filename, lineno)
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Reads line number lineno
from file named filename
# File lib/byebug/helper.rb, line 16 def get_line(filename, lineno) File.open(filename) do |f| f.gets until f.lineno == lineno - 1 f.gets end end
get_lines(filename)
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Reads lines of source file filename
into an array
# File lib/byebug/helper.rb, line 9 def get_lines(filename) File.foreach(filename).reduce([]) { |a, e| a << e.chomp } end
n_lines(filename)
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Returns the number of lines in file filename
in a portable,
one-line-at-a-time way.
# File lib/byebug/helper.rb, line 27 def n_lines(filename) File.foreach(filename).reduce(0) { |a, _e| a + 1 } end
normalize(filename)
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Regularize file name.
# File lib/byebug/helper.rb, line 34 def normalize(filename) return filename if ['(irb)', '-e'].include?(filename) return File.basename(filename) if Setting[:basename] path = File.expand_path(filename) File.exist?(path) ? File.realpath(path) : filename end