[ragel-users] string representation of entities in dot files

[Gaspard Bucher]

Great !

I tried "man ragel" but forgot the "ragel -h".

Thanks.

On Wed, Dec 3, 2008 at 3:57 PM, Adrian Thurston <thurston at complang.org> wrote:
> Yes there is, ragel -h will show you the -p option for writing printable
> label on transitions.
>
> Cheers,
>  Adrian
>
> Gaspard Bucher wrote:
>> Hi list !
>>
>> Anyone knows if there is an option to "ragel -V" to show litteral
>> values instead of numerical ones in the "dot" generated file ?
>>
>> A --- 34 ---> B
>>
>> is less readable then
>>
>> A --- " ---> B
>>
>> If there is no such option and such a filter could help others, here's
>> a simple ruby script that does the job.
>>
>> ====== filter.rb =======
>> #!/usr/bin/env ruby
>> STDIN.read.split("\n").each do |l|
>>   new_l = l.sub(/([^\"]*)\"([^\"]*)\"/) do
>>     pre = $1
>>     str = $2
>>     str.gsub!(/([0-9]+)/) do
>>       val = $1.to_i
>>       if val <= 31
>>         val.to_s
>>       elsif val == 32
>>         "' '"
>>       elsif val == 47
>>         "'/'"
>>       elsif val == 34
>>         "\\\""
>>       elsif val == 92
>>         "'\\\\'"
>>       elsif val < 126
>>         val.chr
>>       else
>>         val.to_s
>>       end
>>     end
>>     "#{pre}\"#{str}\""
>>   end
>>   puts new_l
>> end
>> ===================
>>
>>
>> Gaspard
>>
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>
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