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if not modules then modules = { } end modules ['scrp-eth'] = {
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"
}
-- at some point I will review the script code but for the moment we
-- do it this way; so space settings like with cjk yet
local nuts = nodes.nuts
local getnext = nuts.getnext
local ischar = nuts.ischar
local getattr = nuts.getattr
local nodecodes = nodes.nodecodes
local glyph_code = nodecodes.glyph
local a_scriptstatus = attributes.private('scriptstatus')
local numbertocategory = scripts.numbertocategory
local inserters = scripts.inserters
-- syllable [zerowidthspace] syllable
-- syllable [zerowidthspace] word
-- syllable [zerowidthspace] sentence
-- word [nobreakspace] syllable
-- word [space] word
-- word [space] sentence
-- sentence [nobreakspace] syllable
-- sentence [space] word
-- sentence [space] sentence
local injectors = { -- [previous] [current]
ethiopic_syllable = {
ethiopic_syllable = inserters.zerowidthspace_before,
ethiopic_word = inserters.nobreakspace_before,
ethiopic_sentence = inserters.nobreakspace_before,
},
ethiopic_word = {
ethiopic_syllable = inserters.space_before,
ethiopic_word = inserters.space_before,
ethiopic_sentence = inserters.space_before,
},
ethiopic_sentence = {
ethiopic_syllable = inserters.space_before,
ethiopic_word = inserters.space_before,
ethiopic_sentence = inserters.space_before,
},
}
local function process(head,first,last)
if first ~= last then
local injector = false
local current = first
while current do
local char, id = ischar(current)
if char then
local scriptstatus = getattr(current,a_scriptstatus)
local category = numbertocategory[scriptstatus]
if injector then
local action = injector[category]
if action then
action(head,current)
end
end
injector = injectors[category]
end
if current == last then
break
else
current = getnext(current)
end
end
end
end
scripts.installmethod {
name = "ethiopic",
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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