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util.rb
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util.rb
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module Utils
def self.wrap_arr(msg, width)
ret = []
len = msg.length
return ret << msg if width <= 0
if (len > width)
last_i = 0
i = 0;
until i >= len
tmp = i
if msg[i].chr.eql? "\n"
ret << msg[last_i .. i - 1]
last_i = i + 1
i += 2
next
end
if (i - last_i >= width)
until msg[i].chr.eql? ' ' or i <= last_i
i -= 1
end
i = tmp if (i <= last_i)
ret << msg[last_i .. i]
last_i = i + 1
next
end
i += 1
end
if (last_i != i and i == len): ret << msg[last_i .. i] end
else
ret << msg
end
ret
end
def self.term_width_height
# FIXME: I don't know how portable it is.
default_width = 80
default_height = 25
fallback = 0
begin
tiocgwinsz = 0x5413
data = [0, 0, 0, 0].pack("SSSS")
if @out.ioctl(tiocgwinsz, data) >= 0 then
rows, cols, xpixels, ypixels = data.unpack("SSSS")
if rows <= 0 or cols <= 0 then fallback = 1 end
else
fallback = 1
end
rescue Exception
fallback = 1
end
if fallback == 1
rows, cols = `stty size`.split.map { |x| x.to_i }
if rows <= 0 or cols <= 0
rows = default_height
cols = default_width
end
end
[cols,rows]
end
end # End of Util module