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if not modules then modules = { } end modules ['node-typ'] = {
version = 1.001,
comment = "companion to node-ini.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
local utfvalues = string.utfvalues
local currentfont = font.current
local fontparameters = fonts.hashes.parameters
local hpack = node.hpack
local vpack = node.vpack
local fast_hpack = nodes.fasthpack
local nodepool = nodes.pool
local newglyph = nodepool.glyph
local newglue = nodepool.glue
typesetters = typesetters or { }
local function tonodes(str,fontid,spacing) -- quick and dirty
local head, prev = nil, nil
if not fontid then
fontid = currentfont()
end
local fp = fontparameters[fontid]
local s, p, m
if spacing then
s, p, m = spacing, 0, 0
else
s, p, m = fp.space, fp.space_stretch, fp,space_shrink
end
local spacedone = false
for c in utfvalues(str) do
local next
if c == 32 then
if not spacedone then
next = newglue(s,p,m)
spacedone = true
end
else
next = newglyph(fontid or 1,c)
spacedone = false
end
if not next then
-- nothing
elseif not head then
head = next
else
prev.next = next
next.prev = prev
end
prev = next
end
return head
end
typesetters.tonodes = tonodes
function typesetters.hpack(str,fontid,spacing)
return hpack(tonodes(str,fontid,spacing),"exactly")
end
function typesetters.fast_hpack(str,fontid,spacing)
return fast_hpack(tonodes(str,fontid,spacing),"exactly")
end
function typesetters.vpack(str,fontid,spacing)
-- vpack is just a hack, and a proper implentation is on the agenda
-- as it needs more info etc than currently available
return vpack(tonodes(str,fontid,spacing))
end
--~ node.write(typesetters.hpack("Hello World!"))
--~ node.write(typesetters.hpack("Hello World!",1,100*1024*10))
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