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if not modules then modules = { } end modules ['scrp-tib'] = {
version = 1.001,
comment = "companion to scrp-ini.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
local nuts = nodes.nuts
local getnext = nuts.getnext
local getattr = nuts.getattr
local ischar = nuts.ischar
local a_scriptstatus = attributes.private('scriptstatus')
local numbertocategory = scripts.numbertocategory
local inserters = scripts.inserters
local injectors = {
breaking_tsheg = inserters.space_after,
}
-- more efficient is to check directly
--
-- local b_tsheg = 0x0F0B -- breaking
-- local n_tsheg = 0x0F0C -- nonbreaking
--
-- if char == b_tsheg then
-- head, current = insert_space_after(head,current)
-- end
--
-- but this is more general
local function process(head,first,last)
if first ~= last then
local current = first
while current do
local char, id = ischar(current)
if char then
local scriptstatus = getattr(current,a_scriptstatus)
if scriptstatus and scriptstatus > 0 then
local category = numbertocategory[scriptstatus]
if category then
local injector = injectors[category]
if injector then
head, current = injector(head,current)
end
end
end
end
if current == last then
break
else
current = getnext(current)
end
end
end
end
scripts.installmethod {
name = "tibetan",
injector = process,
datasets = {
default = {
inter_character_space_factor = 1,
inter_character_stretch_factor = 1,
inter_character_shrink_factor = 1,
},
half = {
inter_character_space_factor = 0.5,
inter_character_stretch_factor = 0.5,
inter_character_shrink_factor = 0.5,
},
quarter = {
inter_character_space_factor = 0.25,
inter_character_stretch_factor = 0.25,
inter_character_shrink_factor = 0.25,
},
},
}
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