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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",
}
local aux = mp.aux
local mpnumeric = aux.numeric
local mppair = aux.pair
local mpquoted = aux.quoted
local mpdirect = aux.direct
-- todo: use a stack?
do
local p = nil
local n = 0
local function mf_path_reset()
p = nil
n = 0
end
if CONTEXTLMTXMODE > 0 then
local scan = mp.scan
local scannumber = scan.number
local scanpath = scan.path
local function mf_path_length()
p = scanpath()
n = p and #p or 1
mpnumeric(n)
end
local function mf_path_point()
local i = scannumber()
if i > 0 and i <= n then
local pi = p[i]
mppair(pi[1],pi[2])
end
end
local function mf_path_left()
local i = scannumber()
if i > 0 and i <= n then
local pi = p[i]
mppair(pi[5],pi[6])
end
end
local function mf_path_right()
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 registerscript = metapost.registerscript
registerscript("pathreset", mf_path_reset)
registerscript("pathlengthof", mf_path_length)
registerscript("pathpointof", mf_path_point)
registerscript("pathleftof", mf_path_left)
registerscript("pathrightof", mf_path_right)
else
local get = mp.get
local mpgetpath = get.path
local function mf_path_length(name)
p = mpgetpath(name)
n = p and #p or 0
mpnumeric(n)
end
local function mf_path_point(i)
if i > 0 and i <= n then
local pi = p[i]
mppair(pi[1],pi[2])
end
end
local function mf_path_left(i)
if i > 0 and i <= n then
local pi = p[i]
mppair(pi[5],pi[6])
end
end
local function mf_path_right(i)
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
mp.mf_path_length = mf_path_length mp.pathlength = mf_path_length
mp.mf_path_point = mf_path_point mp.pathpoint = mf_path_point
mp.mf_path_left = mf_path_left mp.pathleft = mf_path_left
mp.mf_path_right = mf_path_right mp.pathright = mf_path_right
mp.mf_path_reset = mf_path_reset mp.pathreset = mf_path_reset
end
end
do
-- if needed we can optimize the sub (cache last split)
local utflen, utfsub = utf.len, utf.sub
function mp.utflen(s)
mpnumeric(utflen(s))
end
function mp.utfsub(s,f,t)
mpquoted(utfsub(s,f,t or f))
end
end
function mp.lmt_svg_include()
local filename = metapost.getparameter { "filename" }
local fontname = metapost.getparameter { "fontname" }
local metacode = nil
if fontname and fontname ~= "" then
local unicode = metapost.getparameter { "unicode" }
if unicode then
metacode = metapost.svgglyphtomp(fontname,math.round(unicode))
end
elseif filename and filename ~= "" then
metacode = metapost.svgtomp {
data = io.loaddata(filename)
}
end
if metacode then
mpdirect(metacode)
end
end
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