Re: [NTG-context] how to hyphenate SHA512?

8 Jul 2017


      On 7/7/2017 10:28 PM, josephcanedo@gmail.com wrote:
...
A probably quick and dirty « solution », which consists in inserting a 
\discretionary node between each digit using some lua code. There are 
mostly likely better solutions for this.
"better" depends on how often such a trick is needed

\startluacode

     -- local shared = {
     --     start  = 1,
     --     length = 1,
     --     left   = false,
     --     right  = false,
     -- }

     local shared = {
         start  = 1,
         length = 1,
         before = utf.char(0xB7),
         after  = nil,
         left   = false,
         right  = false,
     }

     -- languages.hyphenators.traditional.installmethod("sha",
     --     function(dictionary,word,n)
     --         local t = { }
     --         for i=1,#word do
     --             t[i] = shared
     --         end
     --         return t
     --     end
     -- )

     -- or more efficient when used often:

     -- local all = { }
     -- for i=1,512 do
     --     all[i] = shared
     -- end
     -- languages.hyphenators.traditional.installmethod("sha",
     --     function(dictionary,word,n)
     --         return all
     --     end
     -- )

     -- or more obscure:

     -- local all = table.setmetatableindex({ }, function(t,k)
     --     t[k] = shared
     --     return shared
     -- end)
     --
     -- languages.hyphenators.traditional.installmethod("sha",
     --     function(dictionary,word,n)
     --         return all
     --     end
     -- )

     -- or just (lua is fast enough anyway)

     local all = table.setmetatableindex({ }, function(t,k)
         return shared
     end)

     languages.hyphenators.traditional.installmethod("sha",
         function(dictionary,word,n)
             return all
         end
     )
\stopluacode

\definehyphenationfeatures
   [sha]
   [characters=all,
    alternative=sha]

% \unexpanded\def\sha#1%
%   {\begingroup
%    \sethyphenationfeatures[sha]%
%    #1%
%    \endgroup}
%
% \setuphyphenation[method=traditional]

\unexpanded\def\sha#1%
   {\begingroup
    \sethyphenationfeatures[sha]%
    \setuphyphenation[method=traditional]%
    #1%
    \endgroup}

\showframe

\starttext

\setupalign[tolerant,stretch]

\dorecurse {100} {%
     some sha
     \sha{8b2f3c087046c3943ace0dc4f958ef2138e58a51b40e%
ef6fab6fa1aeb845cc257a410ab1b914bc399b4293f%
31c76fc2c73e5be5ea4d329f9e6820984688efec2} and
}

\stoptext
...
\startluacode
function sha(s)
local out = {}
for i = 1, s:len() do
out[#out + 1] = s:sub(i, i)
end
context(table.concat(out, '\\discretionary{_}{}{}'))
end
\stopluacode
\starttext
% \hsize\zeropoint
\hyphenation
%%8b2f3c087046c3943ace0dc4f958ef2138e58a51b40eef6fab6fa1aeb845cc25%
%%7a410ab1b914bc399b4293f31c76fc2c73e5be5ea4d329f9e6820984688efec2
\ctxlua{sha([[8b2f3c087046c3943ace0dc4f958ef2138e58a51b40eef6fab6fa1aeb845cc257a410ab1b914bc399b4293f31c76fc2c73e5be5ea4d329f9e6820984688efec2]])}
\stoptext
*De : *Pablo Rodriguez mailto:oinos@gmx.es
*Envoyé le :*jeudi 6 juillet 2017 12:00
*À : *mailing list for ConTeXt users mailto:ntg-context@ntg.nl
*Objet :*[NTG-context] how to hyphenate SHA512?
Dear list,
I have the following sample:
\starttext
\hsize\zeropoint
hyphenation
8b2f3c087046c3943ace0dc4f958ef2138e58a51b40eef6fab6fa1aeb845cc25%
7a410ab1b914bc399b4293f31c76fc2c73e5be5ea4d329f9e6820984688efec2
\stoptext
I plan to use underscore hyphenation. How can I get the SHA512 string
hyphenated in any of its points?
Many thanks for your help,
Pablo
--
http://www.ousia.tk
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