Sha256: 9bf7701f57a67e963e887973d759299c2363ddf7f85fd82d02fb00a671d9d49c
Contents?: true
Size: 1.38 KB
Versions: 6
Compression:
Stored size: 1.38 KB
Contents
# coding: utf-8
module TTY
class Pager
# A basic pager is used to work on systems where
# system pager is not supported.
#
# @api public
class BasicPager < Pager
# Page text
#
# @api public
def page(text, &callback)
page_num = 1
leftover = []
lines_left = @height
text.lines.each do |line|
chunk = []
if !leftover.empty?
chunk = leftover
leftover = []
end
wrapped_line = Verse.wrap(line, @width)
wrapped_line.lines.each do |line_part|
if lines_left > 0
chunk << line_part
lines_left -= 1
else
leftover << line_part
end
end
output.print(chunk.join)
if lines_left == 0
break unless continue_paging?(page_num)
lines_left = @height
if leftover.size > 0
lines_left -= leftover.size
end
page_num += 1
return !callback.call(page_num) unless callback.nil?
end
end
if leftover.size > 0
output.print(leftover.join)
end
end
private
# @api private
def continue_paging?(page_num)
instance_exec(page_num, &@prompt)
!@input.gets.chomp[/q/i]
end
end # BasicPager
end # Pager
end # TTY
Version data entries
6 entries across 6 versions & 1 rubygems