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|
--
-- This is file `luamplib.lua',
-- generated with the docstrip utility.
--
-- The original source files were:
--
-- luamplib.dtx (with options: `lua')
--
-- See source file 'luamplib.dtx' for licencing and contact information.
--
luamplib = luamplib or { }
local luamplib = luamplib
luamplib.showlog = luamplib.showlog or false
luamplib.lastlog = ""
local err, warn, info, log = luatexbase.provides_module({
name = "luamplib",
version = 2.11,
date = "2013/12/23",
description = "Lua package to typeset Metapost with LuaTeX's MPLib.",
})
local format, abs = string.format, math.abs
local stringgsub = string.gsub
local stringfind = string.find
local stringmatch = string.match
local stringgmatch = string.gmatch
local tableconcat = table.concat
local texsprint = tex.sprint
local mplib = require ('mplib')
local kpse = require ('kpse')
local file = file
if not file then
file = { }
function file.replacesuffix(filename, suffix)
return (stringgsub(filename,"%.[%a%d]+$","")) .. "." .. suffix
end
function file.stripsuffix(filename)
return (stringgsub(filename,"%.[%a%d]+$",""))
end
end
local mpkpse = kpse.new("luatex", "mpost")
local function finder(name, mode, ftype)
if mode == "w" then
return name
else
return mpkpse:find_file(name,ftype)
end
end
luamplib.finder = finder
function luamplib.resetlastlog()
luamplib.lastlog = ""
end
local mplibone = tonumber(mplib.version()) <= 1.50
if mplibone then
luamplib.make = luamplib.make or function(name,mem_name,dump)
local t = os.clock()
local mpx = mplib.new {
ini_version = true,
find_file = luamplib.finder,
job_name = file.stripsuffix(name)
}
mpx:execute(format("input %s ;",name))
if dump then
mpx:execute("dump ;")
info("format %s made and dumped for %s in %0.3f seconds",mem_name,name,os.clock()-t)
else
info("%s read in %0.3f seconds",name,os.clock()-t)
end
return mpx
end
function luamplib.load(name)
local mem_name = file.replacesuffix(name,"mem")
local mpx = mplib.new {
ini_version = false,
mem_name = mem_name,
find_file = luamplib.finder
}
if not mpx and type(luamplib.make) == "function" then
-- when i have time i'll locate the format and dump
mpx = luamplib.make(name,mem_name)
end
if mpx then
info("using format %s",mem_name,false)
return mpx, nil
else
return nil, { status = 99, error = "out of memory or invalid format" }
end
end
else
local preamble = [[
boolean mplib ; mplib := true ;
let dump = endinput ;
let normalfontsize = fontsize;
input %s ;
]]
luamplib.make = luamplib.make or function()
end
function luamplib.load(name)
local mpx = mplib.new {
ini_version = true,
find_file = luamplib.finder,
}
local result
if not mpx then
result = { status = 99, error = "out of memory"}
else
result = mpx:execute(format(preamble, file.replacesuffix(name,"mp")))
end
luamplib.reporterror(result)
return mpx, result
end
end
local currentformat = "plain"
local function setformat (name) --- used in .sty
currentformat = name
end
luamplib.setformat = setformat
luamplib.reporterror = function (result)
if not result then
err("no result object returned")
elseif result.status > 0 then
local t, e, l = result.term, result.error, result.log
if t then
info(t)
end
if e then
err(e)
end
if not t and not e and l then
luamplib.lastlog = luamplib.lastlog .. "\n " .. l
log(l)
else
err("unknown, no error, terminal or log messages")
end
else
return false
end
return true
end
local function process_indeed (mpx, data)
local converted, result = false, {}
local mpx = luamplib.load(mpx)
if mpx and data then
local result = mpx:execute(data)
if not result then
err("no result object returned")
elseif result.status > 0 then
err("%s",(result.term or "no-term") .. "\n" .. (result.error or "no-error"))
elseif luamplib.showlog then
luamplib.lastlog = luamplib.lastlog .. "\n" .. result.term
info("%s",result.term or "no-term")
elseif result.fig then
converted = luamplib.convert(result)
else
err("unknown error, maybe no beginfig/endfig")
end
else
err("Mem file unloadable. Maybe generated with a different version of mplib?")
end
return converted, result
end
local process = function (data)
return process_indeed(currentformat, data)
end
luamplib.process = process
local function getobjects(result,figure,f)
return figure:objects()
end
local function convert(result, flusher)
luamplib.flush(result, flusher)
return true -- done
end
luamplib.convert = convert
local function pdf_startfigure(n,llx,lly,urx,ury)
texsprint(format("\\mplibstarttoPDF{%f}{%f}{%f}{%f}",llx,lly,urx,ury))
end
local function pdf_stopfigure()
texsprint("\\mplibstoptoPDF")
end
local function pdf_literalcode(fmt,...) -- table
texsprint(format("\\mplibtoPDF{%s}",format(fmt,...)))
end
luamplib.pdf_literalcode = pdf_literalcode
local function pdf_textfigure(font,size,text,width,height,depth)
-- if text == "" then text = "\0" end -- char(0) has gone
text = text:gsub(".",function(c)
return format("\\hbox{\\char%i}",string.byte(c)) -- kerning happens in metapost
end)
texsprint(format("\\mplibtextext{%s}{%f}{%s}{%s}{%f}",font,size,text,0,-( 7200/ 7227)/65536*depth))
end
luamplib.pdf_textfigure = pdf_textfigure
local bend_tolerance = 131/65536
local rx, sx, sy, ry, tx, ty, divider = 1, 0, 0, 1, 0, 0, 1
local function pen_characteristics(object)
local t = mplib.pen_info(object)
rx, ry, sx, sy, tx, ty = t.rx, t.ry, t.sx, t.sy, t.tx, t.ty
divider = sx*sy - rx*ry
return not (sx==1 and rx==0 and ry==0 and sy==1 and tx==0 and ty==0), t.width
end
local function concat(px, py) -- no tx, ty here
return (sy*px-ry*py)/divider,(sx*py-rx*px)/divider
end
local function curved(ith,pth)
local d = pth.left_x - ith.right_x
if abs(ith.right_x - ith.x_coord - d) <= bend_tolerance and abs(pth.x_coord - pth.left_x - d) <= bend_tolerance then
d = pth.left_y - ith.right_y
if abs(ith.right_y - ith.y_coord - d) <= bend_tolerance and abs(pth.y_coord - pth.left_y - d) <= bend_tolerance then
return false
end
end
return true
end
local function flushnormalpath(path,open)
local pth, ith
for i=1,#path do
pth = path[i]
if not ith then
pdf_literalcode("%f %f m",pth.x_coord,pth.y_coord)
elseif curved(ith,pth) then
pdf_literalcode("%f %f %f %f %f %f c",ith.right_x,ith.right_y,pth.left_x,pth.left_y,pth.x_coord,pth.y_coord)
else
pdf_literalcode("%f %f l",pth.x_coord,pth.y_coord)
end
ith = pth
end
if not open then
local one = path[1]
if curved(pth,one) then
pdf_literalcode("%f %f %f %f %f %f c",pth.right_x,pth.right_y,one.left_x,one.left_y,one.x_coord,one.y_coord )
else
pdf_literalcode("%f %f l",one.x_coord,one.y_coord)
end
elseif #path == 1 then
-- special case .. draw point
local one = path[1]
pdf_literalcode("%f %f l",one.x_coord,one.y_coord)
end
return t
end
local function flushconcatpath(path,open)
pdf_literalcode("%f %f %f %f %f %f cm", sx, rx, ry, sy, tx ,ty)
local pth, ith
for i=1,#path do
pth = path[i]
if not ith then
pdf_literalcode("%f %f m",concat(pth.x_coord,pth.y_coord))
elseif curved(ith,pth) then
local a, b = concat(ith.right_x,ith.right_y)
local c, d = concat(pth.left_x,pth.left_y)
pdf_literalcode("%f %f %f %f %f %f c",a,b,c,d,concat(pth.x_coord, pth.y_coord))
else
pdf_literalcode("%f %f l",concat(pth.x_coord, pth.y_coord))
end
ith = pth
end
if not open then
local one = path[1]
if curved(pth,one) then
local a, b = concat(pth.right_x,pth.right_y)
local c, d = concat(one.left_x,one.left_y)
pdf_literalcode("%f %f %f %f %f %f c",a,b,c,d,concat(one.x_coord, one.y_coord))
else
pdf_literalcode("%f %f l",concat(one.x_coord,one.y_coord))
end
elseif #path == 1 then
-- special case .. draw point
local one = path[1]
pdf_literalcode("%f %f l",concat(one.x_coord,one.y_coord))
end
return t
end
local mplibcodepreamble = [[
vardef rawtextext (expr t) =
if unknown TEXBOX_:
image( special "%%mkTEXbox:"&t; )
else:
TEXBOX_ := TEXBOX_ + 1;
image (
addto currentpicture doublepath unitsquare
xscaled TEXBOX_wd[TEXBOX_]
yscaled (TEXBOX_ht[TEXBOX_] + TEXBOX_dp[TEXBOX_])
shifted (0, -TEXBOX_dp[TEXBOX_])
withprescript "%%TEXtxtbox:" &
decimal TEXBOX_ & ":" &
decimal TEXBOX_wd[TEXBOX_] & ":" &
decimal(TEXBOX_ht[TEXBOX_]+TEXBOX_dp[TEXBOX_]);
)
fi
enddef;
if known context_mlib:
defaultfont := "cmtt10";
let infont = normalinfont;
let fontsize = normalfontsize;
vardef thelabel@#(expr p,z) =
if string p :
thelabel@#(p infont defaultfont scaled defaultscale,z)
else :
p shifted (z + labeloffset*mfun_laboff@# -
(mfun_labxf@#*lrcorner p + mfun_labyf@#*ulcorner p +
(1-mfun_labxf@#-mfun_labyf@#)*llcorner p))
fi
enddef;
else:
vardef textext@# (text t) = rawtextext (t) enddef;
fi
def externalfigure primary filename =
draw rawtextext("\includegraphics{"& filename &"}")
enddef;
def TEX = textext enddef;
def VerbatimTeX (text t) =
if known TEXBOX_: message "verbatimtex '"& t &"' is ignored"; fi
enddef;
def fontmapfile primary filename = enddef;
]]
local factor = 65536*(7227/7200)
local function putTEXboxes (object)
local n,tw,th = stringmatch(object.prescript,
"%%%%TEXtxtbox:(%d+):([%d%.%+%-]+):([%d%.%+%-]+)")
if n and tw and th then
local op = object.path
local first, second, fourth = op[1], op[2], op[4]
local tx, ty = first.x_coord, first.y_coord
local sx, sy = (second.x_coord - tx)/tw, (fourth.y_coord - ty)/th
local rx, ry = (second.y_coord - ty)/tw, (fourth.x_coord - tx)/th
if sx == 0 then sx = 0.00001 end
if sy == 0 then sy = 0.00001 end
local cs = object.color
if cs and #cs > 0 then
pdf_literalcode(luamplib.colorconverter(cs))
end
pdf_literalcode("q %f %f %f %f %f %f cm",sx,rx,ry,sy,tx,ty)
texsprint(format("\\mplibputtextbox{%i}",n))
pdf_literalcode("Q")
end
end
local function domakeTEXboxes (data)
local num = tex.count[14] -- newbox register
if data and data.fig then
local figures = data.fig
for f=1, #figures do
local figure = figures[f]
local objects = getobjects(data,figure,f)
if objects then
for o=1,#objects do
local object = objects[o]
local prescript = object.prescript
local str = prescript and stringmatch(prescript, "%%%%mkTEXbox:(.*)")
if str then
num = num + 1
texsprint(format("\\setbox%i\\hbox{%s}",num,str))
end
end
end
end
end
end
local function makeTEXboxes (data)
data = stringgsub(data, "([^A-Z_a-z])btex([^A-Z_a-z])",
function(pre,post)
post = stringgsub(post,"%s","")
return pre .. 'textext("' .. post
end)
data = stringgsub(data, "([^A-Z_a-z])verbatimtex([^A-Z_a-z])",
function(pre,post)
post = stringgsub(post,"%s","")
return pre .. 'VerbatimTeX("' .. post
end)
data = stringgsub(data, "([^A-Z_a-z])etex([^A-Z_a-z])",
function(pre,post)
pre = stringgsub(pre,"%s","")
return pre .. '")' .. post
end)
local mpx = luamplib.load(currentformat)
if mpx and data then
local result = mpx:execute(mplibcodepreamble .. data)
domakeTEXboxes(result)
end
return data
end
luamplib.makeTEXboxes = makeTEXboxes
local function processwithTEXboxes (data)
local num = tex.count[14] -- the same newbox register
local prepreamble = "TEXBOX_ := "..num..";\n"
while true do
num = num + 1
local box = tex.box[num]
if not box then break end
prepreamble = prepreamble ..
"TEXBOX_wd["..num.."] := "..box.width /factor..";\n"..
"TEXBOX_ht["..num.."] := "..box.height/factor..";\n"..
"TEXBOX_dp["..num.."] := "..box.depth /factor..";\n"
end
process(prepreamble .. mplibcodepreamble .. data)
end
luamplib.processwithTEXboxes = processwithTEXboxes
local function flush(result,flusher)
if result then
local figures = result.fig
if figures then
for f=1, #figures do
info("flushing figure %s",f)
local figure = figures[f]
local objects = getobjects(result,figure,f)
local fignum = tonumber(stringmatch(figure:filename(),"([%d]+)$") or figure:charcode() or 0)
local miterlimit, linecap, linejoin, dashed = -1, -1, -1, false
local bbox = figure:boundingbox()
local llx, lly, urx, ury = bbox[1], bbox[2], bbox[3], bbox[4] -- faster than unpack
if urx < llx then
-- invalid
pdf_startfigure(fignum,0,0,0,0)
pdf_stopfigure()
else
pdf_startfigure(fignum,llx,lly,urx,ury)
pdf_literalcode("q")
if objects then
for o=1,#objects do
local object = objects[o]
local objecttype = object.type
local prescript = object.prescript --- [be]tex patch
if prescript and stringfind(prescript,"%%%%TEXtxtbox:") then
putTEXboxes(object)
elseif objecttype == "start_bounds" or objecttype == "stop_bounds" then
-- skip
elseif objecttype == "start_clip" then
pdf_literalcode("q")
flushnormalpath(object.path,t,false)
pdf_literalcode("W n")
elseif objecttype == "stop_clip" then
pdf_literalcode("Q")
miterlimit, linecap, linejoin, dashed = -1, -1, -1, false
elseif objecttype == "special" then
-- not supported
elseif objecttype == "text" then
local ot = object.transform -- 3,4,5,6,1,2
local cs = object.color
if cs and #cs > 0 then
pdf_literalcode(luamplib.colorconverter(cs))
end
pdf_literalcode("q %f %f %f %f %f %f cm",ot[3],ot[4],ot[5],ot[6],ot[1],ot[2])
pdf_textfigure(object.font,object.dsize,object.text,object.width,object.height,object.depth)
pdf_literalcode("Q")
else
local cs = object.color
if cs and #cs > 0 then
pdf_literalcode(luamplib.colorconverter(cs))
end
local ml = object.miterlimit
if ml and ml ~= miterlimit then
miterlimit = ml
pdf_literalcode("%f M",ml)
end
local lj = object.linejoin
if lj and lj ~= linejoin then
linejoin = lj
pdf_literalcode("%i j",lj)
end
local lc = object.linecap
if lc and lc ~= linecap then
linecap = lc
pdf_literalcode("%i J",lc)
end
local dl = object.dash
if dl then
local d = format("[%s] %i d",tableconcat(dl.dashes or {}," "),dl.offset)
if d ~= dashed then
dashed = d
pdf_literalcode(dashed)
end
elseif dashed then
pdf_literalcode("[] 0 d")
dashed = false
end
local path = object.path
local transformed, penwidth = false, 1
local open = path and path[1].left_type and path[#path].right_type
local pen = object.pen
if pen then
if pen.type == 'elliptical' then
transformed, penwidth = pen_characteristics(object) -- boolean, value
pdf_literalcode("%f w",penwidth)
if objecttype == 'fill' then
objecttype = 'both'
end
else -- calculated by mplib itself
objecttype = 'fill'
end
end
if transformed then
pdf_literalcode("q")
end
if path then
if transformed then
flushconcatpath(path,open)
else
flushnormalpath(path,open)
end
if objecttype == "fill" then
pdf_literalcode("h f")
elseif objecttype == "outline" then
pdf_literalcode((open and "S") or "h S")
elseif objecttype == "both" then
pdf_literalcode("h B")
end
end
if transformed then
pdf_literalcode("Q")
end
local path = object.htap
if path then
if transformed then
pdf_literalcode("q")
end
if transformed then
flushconcatpath(path,open)
else
flushnormalpath(path,open)
end
if objecttype == "fill" then
pdf_literalcode("h f")
elseif objecttype == "outline" then
pdf_literalcode((open and "S") or "h S")
elseif objecttype == "both" then
pdf_literalcode("h B")
end
if transformed then
pdf_literalcode("Q")
end
end
-- if cr then
-- pdf_literalcode(cr)
-- end
end
end
end
pdf_literalcode("Q")
pdf_stopfigure()
end
end
end
end
end
luamplib.flush = flush
local function colorconverter(cr)
local n = #cr
if n == 4 then
local c, m, y, k = cr[1], cr[2], cr[3], cr[4]
return format("%.3f %.3f %.3f %.3f k %.3f %.3f %.3f %.3f K",c,m,y,k,c,m,y,k), "0 g 0 G"
elseif n == 3 then
local r, g, b = cr[1], cr[2], cr[3]
return format("%.3f %.3f %.3f rg %.3f %.3f %.3f RG",r,g,b,r,g,b), "0 g 0 G"
else
local s = cr[1]
return format("%.3f g %.3f G",s,s), "0 g 0 G"
end
end
luamplib.colorconverter = colorconverter
--
-- End of File `luamplib.lua'.
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