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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"
}
-- code has been moved to blob-ini.lua
local typesetters = nodes.typesetters or { }
nodes.typesetters = typesetters
local nuts = nodes.nuts
local tonode = nuts.tonode
local tonut = nuts.tonut
local setfield = nuts.setfield
local getfont = nuts.getfont
local hpack_node_list = nuts.hpack
local vpack_node_list = nuts.vpack
local fast_hpack_list = nuts.fasthpack
local copy_node = nuts.copy
local nodepool = nuts.pool
local new_glyph = nodepool.glyph
local new_glue = nodepool.glue
local utfvalues = utf.values
local currentfont = font.current
local fontparameters = fonts.hashes.parameters
local function tonodes(str,fontid,spacing,templateglyph) -- quick and dirty
local head, prev = nil, nil
if not fontid then
if templateglyph then
fontid = getfont(templateglyph)
else
fontid = currentfont()
end
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 = new_glue(s,p,m)
spacedone = true
end
elseif templateglyph then
next = copy_glyph(templateglyph)
setfield(next,"char",c)
spacedone = false
else
next = new_glyph(fontid or 1,c)
spacedone = false
end
if not next then
-- nothing
elseif not head then
head = next
else
setfield(prev,"next",next)
setfield(next,"prev",prev)
end
prev = next
end
return head
end
local function tohpack(str,fontid,spacing)
return hpack_node_list(tonodes(str,fontid,spacing),"exactly")
end
local function tohpackfast(str,fontid,spacing)
return fast_hpack_list(tonodes(str,fontid,spacing),"exactly")
end
local function tovpack(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_node_list(tonodes(str,fontid,spacing))
end
local tovpackfast = tovpack
local tnuts = { }
nuts.typesetters = tnuts
tnuts.tonodes = tonodes
tnuts.tohpack = tohpack
tnuts.tohpackfast = tohpackfast
tnuts.tovpack = tovpack
tnuts.tovpackfast = tovpackfast
tnuts.hpack = tohpack -- obsolete
tnuts.fast_hpack = tohpackfast -- obsolete
tnuts.vpack = tovpack -- obsolete
typesetters.tonodes = function(...) local h, b = tonodes (...) return tonode(h), b end
typesetters.tohpack = function(...) local h, b = tohpack (...) return tonode(h), b end
typesetters.tohpackfast = function(...) local h, b = tohpackfast(...) return tonode(h), b end
typesetters.tovpack = function(...) local h, b = tovpack (...) return tonode(h), b end
typesetters.tovpackfast = function(...) local h, b = tovpackfast(...) return tonode(h), b end
typesetters.hpack = typesetters.tohpack -- obsolete
typesetters.fast_hpack = typesetters.tofasthpack -- obsolete
typesetters.vpack = typesetters.tovpack -- obsolete
-- node.write(nodes.typestters.hpack("Hello World!"))
-- node.write(nodes.typestters.hpack("Hello World!",1,100*1024*10))
string.tonodes = function(...) return tonode(tonodes(...)) end -- quite convenient
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