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if not modules then modules = { } end modules ['mlib-ctx'] = {
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",
}
-- todo
local format, concat = string.format, table.concat
local report_metapost = logs.reporter("metapost")
local starttiming, stoptiming = statistics.starttiming, statistics.stoptiming
local mplib = mplib
metapost = metapost or {}
local metapost = metapost
metapost.defaultformat = "metafun"
function metapost.graphic(instance,mpsformat,str,initializations,preamble,askedfig)
local mpx = metapost.format(instance,mpsformat or metapost.defaultformat)
metapost.graphic_base_pass(mpx,str,initializations,preamble,askedfig)
end
function metapost.getclippath(instance,mpsformat,data,initializations,preamble)
local mpx = metapost.format(instance,mpsformat or metapost.defaultformat)
if mpx and data then
starttiming(metapost)
starttiming(metapost.exectime)
local result = mpx:execute(format("%s;beginfig(1);%s;%s;endfig;",preamble or "",initializations or "",data))
stoptiming(metapost.exectime)
if result.status > 0 then
report_metapost("%s: %s", result.status, result.error or result.term or result.log)
result = nil
else
result = metapost.filterclippath(result)
end
stoptiming(metapost)
return result
end
end
function metapost.filterclippath(result)
if result then
local figures = result.fig
if figures and #figures > 0 then
local figure = figures[1]
local objects = figure:objects()
if objects then
local lastclippath
for o=1,#objects do
local object = objects[o]
if object.type == "start_clip" then
lastclippath = object.path
end
end
return lastclippath
end
end
end
end
function metapost.theclippath(...)
local result = metapost.getclippath(...)
if result then -- we could just print the table
result = concat(metapost.flushnormalpath(result),"\n")
context(result)
end
end
statistics.register("metapost processing time", function()
local n = metapost.n
if n and n > 0 then
local e, t = metapost.makempy.nofconverted, statistics.elapsedtime
local str = format("%s seconds, loading: %s seconds, execution: %s seconds, n: %s",
t(metapost), t(mplib), t(metapost.exectime), n)
if e > 0 then
return format("%s, external: %s seconds (%s calls)", str, t(metapost.makempy), e)
else
return str
end
else
return nil
end
end)
-- only used in graphictexts
metapost.tex = metapost.tex or { }
local environments = { }
function metapost.tex.set(str)
environments[#environments+1] = str
end
function metapost.tex.reset()
environments = { }
end
function metapost.tex.get()
return concat(environments,"\n")
end
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