Quoth Gary Kline on Sunday, 20 February 2011: > THis is to the entire list, mostly to Chip. It is o8.rb, my > very slightly tweaked version of what you ma/// rather, what i > found and began messing with a couple, three hours ago. > > I searched++ and could not find the C equivalent of > "if counter % N == 0" in ruby. For some reason, use of parens > in ruby seems to be discouraged. Anyway, I would have coded that > ruby line as > > if ( counter % 15) == 0 > > but didn't want to risk it since i don't know ruby. > > Anyway, o8.rb included. This version, using the "[][][][][]" to > emulate a bar, makes reading a reasonably-sized bunch of text > much easier. > > Thanks again for your help. > > -- > Gary Kline kl...@thought.org http://www.thought.org Public Service Unix >
Try this version instead. There's no need to find the % 15, we're
already paging on the specified number.
#!/usr/bin/env ruby
require 'optparse'
def banner
print "\n[][][][][][][][][][][][][][][][][][][][]\n\n"
end
pagesize = 15
optparse = OptionParser.new do |opts|
opts.banner = 'usage: npg [-n pagesize] file...'
opts.on('-n', '--numlines pagesize', 'Specify page size in number of lines')
do |n|
pagesize = n.to_i
end
end
begin
optparse.parse!
rescue OptionParser::InvalidOption, OptionParser::MissingArgument => e
puts e
puts optparse
exit 1
end
banner
loop do
pagesize.times do
if line = gets
puts line
else
banner
exit
end
end
banner
print "More..."
system "stty raw"
STDIN.getc
system "stty -raw"
banner
end
--
Sterling (Chip) Camden | sterl...@camdensoftware.com | 2048D/3A978E4F
http://chipsquips.com | http://camdensoftware.com | http://chipstips.com
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