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if not modules then modules = { } end modules ['mlib-lmp'] = {
version = 1.001,
comment = "companion to mlib-ctx.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files",
}
-- path relates stuff ... todo: use a stack (or numeric index to list)
local type = type
local aux = mp.aux
local mpnumeric = aux.numeric
local mppair = aux.pair
local registerdirect = metapost.registerdirect
local registerscript = metapost.registerscript
local scan = mp.scan
local get = mp.get
local scannumber = scan.number
local scanstring = scan.string
local scanpath = scan.path
local scanproperty = scan.property
local gethashentry = get.hashentry
local p = nil
local n = 0
registerscript("pathreset", function()
p = nil
n = 0
end)
registerscript("pathlengthof", function()
p = scanpath()
n = p and #p or 1
mpnumeric(n)
end)
registerscript("pathpointof", function()
local i = scannumber()
if i > 0 and i <= n then
local pi = p[i]
mppair(pi[1],pi[2])
end
end)
registerscript("pathleftof", function()
local i = scannumber()
if i > 0 and i <= n then
local pi = p[i]
mppair(pi[5],pi[6])
end
end)
registerscript("pathrightof", function()
local i = scannumber()
if i > 0 and i <= n then
local pn
if i == 1 then
pn = p[2] or p[1]
else
pn = p[i+1] or p[1]
end
mppair(pn[3],pn[4])
end
end)
local report = logs.reporter("metapost", "log")
local codes = metapost.codes
local types = metapost.types
local procodes = mplib.propertycodes
registerscript("showproperty", function()
local k, s, p, d = scanproperty()
if k then
report("name %a, property %a, command %a, detail %a",s,procodes[p] or "-",codes[k] or "-",types[d] or "-")
end
end)
registerscript("showhashentry", function()
local s = scanstring()
if s then
local k, p, d = gethashentry(s)
if k then
report("name %a, property %a, command %a, detail %a",s,procodes[p] or "-",codes[k] or "-",types[d] or "-")
end
end
end)
-- local getmacro = tokens.getters.macro
-- local mpgnamespace = getmacro("??graphicvariable")
-- local scanmpstring = mp.scan.string
-- local injectnumeric = mp.inject.numeric
-- local injectstring = mp.inject.string
-- registerscript("mpv_numeric", function() injectnumeric (getmacro(mpgnamespace .. getmacro("currentmpcategory") .. ":" .. scanmpstring())) end)
-- registerscript("mpv_dimension", function() return getmacro(mpgnamespace .. getmacro("currentmpcategory") .. ":" .. scanmpstring()) end)
-- registerscript("mpv_string", function() injectstring (getmacro(mpgnamespace .. getmacro("currentmpcategory") .. ":" .. scanmpstring())) end)
-- registerscript("mpvar", function() return getmacro(mpgnamespace .. getmacro("currentmpcategory") .. ":" .. scanmpstring(), true) end) -- Isn't it already edef'd?
-- registerscript("mpvar", function() return getmacro(metapost.namespace .. scanmpstring(), true) end) -- Isn't it already edef'd?
local scanstring = mp.scan.string
local expandtex = mp.expandtex
local injectnumeric = mp.inject.numeric
local injectstring = mp.inject.string
local injectboolean = mp.inject.boolean
local tokenvalues = tokens.values
local dimension_value = tokenvalues.dimension
local integer_value = tokenvalues.integer
local boolean_value = tokenvalues.boolean
local string_value = tokenvalues.string
local unknown_value = tokenvalues.none
registerdirect("mpvard", function()
if not expandtex(dimension_value,"mpcategoryparameter",true,scanstring()) then
injectnumeric(0)
end
end)
registerdirect("mpvarn", function()
if not expandtex(integer_value,"mpcategoryparameter",true,scanstring()) then
injectnumeric(0)
end
end)
registerdirect("mpvars", function()
if not expandtex(string_value,"mpcategoryparameter",true,scanstring()) then
injectstring("")
end
end)
registerdirect("mpvarb", function()
if not expandtex(boolean_value,"mpcategoryparameter",true,scanstring()) then
injectboolean(false)
end
end)
registerdirect("mpvar", function()
if not expandtex(unknown_value,"mpcategoryparameter",true,scanstring()) then
injectnumeric(0)
end
end)
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