From: Justin Collins <justincollins@...>
Date: 2009-09-24T11:29:19+09:00
Subject: Re: How do you limit the line length of the output commands? Where is 	pqueue library documented?

Caleb Clausen wrote:
> On 9/23/09, Patrick Okui <pokui@psg.com> wrote:
>   
>> On 9/24/09 12:59 AM, Mason Kelsey wrote:
>>     
>>> First Question: What is an easy way to modify the below puts code to
>>> control
>>> line length without truncation?
>>>       
> [snip]
>   
>> If that doesn't satisfy you I'd guess you're stuck with stuffing the
>> methods into the end of a buffer yourself. (sorry this feels more like C
>> than ruby to this ruby newbie but I can't think of a simpler way)
>>
>> buffer = ''
>> pq.methods.each do |m|
>>    if buffer.split("\n")[-1].to_s.length + m.length < 60
>>      buffer << ((buffer.length > 0)? ", #{m}": "#{m}")
>>    else
>>      buffer << "\n#{m}"
>>    end
>> end
>>
>> puts buffer
>>     
>
> There's a way to do this using Regexp and gsub, but I almost always
> mess it up when I try to code it off the top of my head. It seems to
> be difficult enough that its actually better to do it like you have
> above, even tho the regexp version is only like 2 lines

This is a pretty decent one I've been using:

class String
        def word_wrap length
                self.gsub(/([^\r\n\n\s\Z]{#{length}})/, "\\1 
").gsub(/(.{1,#{length}})(\r\n|\n|\s+|\Z)/, "\\1\n")
        end
end

puts pq.methods.join(", ").word_wrap


-Justin