Re: how to hyphenate SHA512?

[Pablo Rodriguez <oinos@gmx.es>]

On 07/08/2017 01:32 PM, Hans Hagen wrote:
> 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

Many thanks for your help, Hans and Joseph.

I will play with your sample bellow to adapt it to the underscore
hyphenation to the code provided here.

Pablo


> \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

-- 
http://www.ousia.tk
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