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if not modules then modules = { } end modules ['font-imp-tweaks'] = {
version = 1.001,
comment = "companion to font-ini.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
if not context then return end
local addfeature = fonts.handlers.otf.addfeature
-- The mapping directives avoids a check and copying of the (kind of special code
-- mapping tables.
addfeature {
name = "uppercasing",
type = "substitution",
prepend = true,
mapping = true,
-- valid = function() return true end,
data = characters.uccodes
}
addfeature {
name = "lowercasing",
type = "substitution",
prepend = true,
mapping = true,
-- valid = function() return true end,
data = characters.lccodes
}
if CONTEXTLMTXMODE > 0 then
local nuts = nodes.nuts
local isnextchar = nuts.isnextchar
local getdisc = nuts.getdisc
local setchar = nuts.setchar
local disc_code = nodes.nodecodes.disc
local lccodes = characters.lccodes
local uccodes = characters.uccodes
function fonts.handlers.otf.handlers.ctx_camelcasing(head,dataset,sequence,initialrl,font,dynamic)
local first = false
local current = head
-- local scale = 1000
-- local xscale = 1000
-- local yscale = 1000
local function check(current)
while current do
-- scale, xscale, yscale = getscales(current)
local nxt, char, id = isnextchar(current,font,dynamic) -- ,scale,xscale,yscale)
if char then
if first then
local lower = lccodes[char]
if lower ~= char then
setchar(current,lower)
end
else
local upper = uccodes[char]
if upper ~= char then
setchar(current,upper)
end
first = true
end
elseif id == disc_code then
local pre, post, replace = getdisc(current)
if pre then
check(pre)
end
if post then
check(post)
end
if replace then
check(replace)
end
else
first = false
end
current = nxt
end
end
check(current)
return head
end
addfeature {
nocheck = true,
name = "camelcasing",
type = "ctx_camelcasing",
prepend = true,
data = "action",
}
end
do -- for the moment this is mostly a demo feature
local digit = { "0", "1", "2", "3", "4", "5", "6", "7", "8", "9" }
local single = { "'" }
local double = { '"' }
local singleprime = 0x2032 -- "′"
local doubleprime = 0x2033 -- "″"
addfeature {
-- nocheck = true,
name = "primes",
type = "chainsubstitution",
lookups = {
{
type = "substitution",
data = { ["'"] = singleprime },
},
{
type = "substitution",
data = { ["'"] = doubleprime },
},
},
data = {
rules = {
{
before = { digit },
current = { single },
after = { digit },
lookups = { 1 },
},
{
before = { digit },
current = { single, single },
lookups = { 2, 0 }, -- zero: gsub_remove
},
},
},
}
end
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