class RuboCop::Cop::Style::FileRead


File.binread(filename)
# good
end
f.read
File.open(filename, ‘rb’) do |f|
File.open(filename, ‘rb’, &:read)
File.open(filename, ‘rb’).read
# bad - binary mode
File.read(filename)
# good
end
f.read
File.open(filename, ‘r’) do |f|
File.open(filename, ‘r’, &:read)
File.open(filename, ‘r’).read
end
f.read
File.open(filename) do |f|
File.open(filename) { |f| f.read }
File.open(filename, &:read)
File.open(filename).read
# bad - text mode
@example
Favor ‘File.(bin)read` convenience methods.

def evidence(node) 

def evidence(node)
  file_open?(node) do |filename, mode_array, block_pass|
    read_node?(node, block_pass) do |read_node|
      yield(filename, mode_array.first || 'r', read_node)
    end
  end
end

def file_open_read?(node) 

def file_open_read?(node)
  return true if send_read?(node)
  block_read?(node)
end

def on_send(node) 

def on_send(node)
  evidence(node) do |filename, mode, read_node|
    message = format(MSG, read_method: read_method(mode))
    add_offense(read_node, message: message) do |corrector|
      range = range_between(node.loc.selector.begin_pos, read_node.source_range.end_pos)
      replacement = "#{read_method(mode)}(#{filename.source})"
      corrector.replace(range, replacement)
    end
  end
end

def read_method(mode) 

def read_method(mode)
  mode.end_with?('b') ? :binread : :read
end

def read_node?(node, block_pass) 

def read_node?(node, block_pass)
  if block_pass.any?
    yield(node)
  elsif file_open_read?(node.parent)
    yield(node.parent)
  end
end