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-rw-r--r--tex/generic/context/luatex-fonts-merged.lua2
-rw-r--r--tex/generic/context/luatex-mplib.lua491
2 files changed, 492 insertions, 1 deletions
diff --git a/tex/generic/context/luatex-fonts-merged.lua b/tex/generic/context/luatex-fonts-merged.lua
index 890e2bac4..a182687cd 100644
--- a/tex/generic/context/luatex-fonts-merged.lua
+++ b/tex/generic/context/luatex-fonts-merged.lua
@@ -1,6 +1,6 @@
-- merged file : luatex-fonts-merged.lua
-- parent file : luatex-fonts.lua
--- merge date : 12/22/10 20:19:01
+-- merge date : 12/31/10 08:59:52
do -- begin closure to overcome local limits and interference
diff --git a/tex/generic/context/luatex-mplib.lua b/tex/generic/context/luatex-mplib.lua
new file mode 100644
index 000000000..c6628acb3
--- /dev/null
+++ b/tex/generic/context/luatex-mplib.lua
@@ -0,0 +1,491 @@
+if not modules then modules = { } end modules ['luatex-mplib'] = {
+ version = 1.001,
+ comment = "companion to luatex-mplib.tex",
+ author = "Hans Hagen & Taco Hoekwater",
+ copyright = "ConTeXt Development Team",
+ license = "public domain",
+}
+
+--[[ldx--
+<p>This module is a stripped down version of libraries that are used
+by <l n='context'/>. It can be used in other macro packages and/or
+serve as an example. Embedding in a macro package is upto others and
+normally boils down to inputting <t>supp-mpl.tex</t>.</p>
+--ldx]]--
+
+if metapost and metapost.version then
+
+ --[[ldx--
+ <p>Let's silently quit and make sure that no one loads it
+ manually in <l n='context'/>.</p>
+ --ldx]]--
+
+else
+
+ local format, concat, abs, match = string.format, table.concat, math.abs, string.match
+
+ local mplib = require ('mplib')
+ local kpse = require ('kpse')
+
+ --[[ldx--
+ <p>We create a namespace and some variables to it. If a namespace is
+ already defined it wil not be initialized. This permits hooking
+ in code beforehand.</p>
+
+ <p>We don't make a format automatically. After all, distributions
+ might have their own preferences and normally a format (mem) file will
+ have some special place in the <l n='tex'/> tree. Also, there can already
+ be format files, different memort settings and other nasty pitfalls that
+ we don't want to interfere with. If you want, you can define a function
+ <t>metapost.make(name,mem_name) that does the job.</t></p>
+ --ldx]]--
+
+ metapost = metapost or { }
+ metapost.version = 1.00
+ metapost.showlog = metapost.showlog or false
+ metapost.lastlog = ""
+
+ --[[ldx--
+ <p>A few helpers, taken from <t>l-file.lua</t>.</p>
+ --ldx]]--
+
+ local file = file or { }
+
+ function file.replacesuffix(filename, suffix)
+ return (string.gsub(filename,"%.[%a%d]+$","")) .. "." .. suffix
+ end
+
+ function file.stripsuffix(filename)
+ return (string.gsub(filename,"%.[%a%d]+$",""))
+ end
+
+ --[[ldx--
+ <p>We use the <l n='kpse'/> library unless a finder is already
+ defined.</p>
+ --ldx]]--
+
+ local mpkpse = kpse.new("luatex","mpost")
+
+ metapost.finder = metapost.finder or function(name, mode, ftype)
+ if mode == "w" then
+ return name
+ else
+ return mpkpse:find_file(name,ftype)
+ end
+ end
+
+ --[[ldx--
+ <p>You can use your own reported if needed, as long as it handles multiple
+ arguments and formatted strings.</p>
+ --ldx]]--
+
+ metapost.report = metapost.report or function(...)
+ texio.write(format("<mplib: %s>",format(...)))
+ end
+
+ --[[ldx--
+ <p>The rest of this module is not documented. More info can be found in the
+ <l n='luatex'/> manual, articles in user group journals and the files that
+ ship with <l n='context'/>.</p>
+ --ldx]]--
+
+ function metapost.resetlastlog()
+ metapost.lastlog = ""
+ end
+
+ local mplibone = tonumber(mplib.version()) <= 1.50
+
+ if mplibone then
+
+ metapost.make = metapost.make or function(name,mem_name,dump)
+ local t = os.clock()
+ local mpx = mplib.new {
+ ini_version = true,
+ find_file = metapost.finder,
+ job_name = file.stripsuffix(name)
+ }
+ mpx:execute(string.format("input %s ;",name))
+ if dump then
+ mpx:execute("dump ;")
+ metapost.report("format %s made and dumped for %s in %0.3f seconds",mem_name,name,os.clock()-t)
+ else
+ metapost.report("%s read in %0.3f seconds",name,os.clock()-t)
+ end
+ return mpx
+ end
+
+ function metapost.load(name)
+ local mem_name = file.replacesuffix(name,"mem")
+ local mpx = mplib.new {
+ ini_version = false,
+ mem_name = mem_name,
+ find_file = metapost.finder
+ }
+ if not mpx and type(metapost.make) == "function" then
+ -- when i have time i'll locate the format and dump
+ mpx = metapost.make(name,mem_name)
+ end
+ if mpx then
+ metapost.report("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 ;
+ input %s ;
+ ]]
+
+ metapost.make = metapost.make or function()
+ end
+
+ function metapost.load(name)
+ local mpx = mplib.new {
+ ini_version = true,
+ find_file = metapost.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
+ metapost.reporterror(result)
+ return mpx, result
+ end
+
+ end
+
+ function metapost.unload(mpx)
+ if mpx then
+ mpx:finish()
+ end
+ end
+
+ function metapost.reporterror(result)
+ if not result then
+ metapost.report("mp error: no result object returned")
+ elseif result.status > 0 then
+ local t, e, l = result.term, result.error, result.log
+ if t then
+ metapost.report("mp terminal: %s",t)
+ end
+ if e then
+ metapost.report("mp error: %s", e)
+ end
+ if not t and not e and l then
+ metapost.lastlog = metapost.lastlog .. "\n " .. l
+ metapost.report("mp log: %s",l)
+ else
+ metapost.report("mp error: unknown, no error, terminal or log messages")
+ end
+ else
+ return false
+ end
+ return true
+ end
+
+ function metapost.process(mpx, data)
+ local converted, result = false, {}
+ mpx = metapost.load(mpx)
+ if mpx and data then
+ local result = mpx:execute(data)
+ if not result then
+ metapost.report("mp error: no result object returned")
+ elseif result.status > 0 then
+ metapost.report("mp error: %s",(result.term or "no-term") .. "\n" .. (result.error or "no-error"))
+ elseif metapost.showlog then
+ metapost.lastlog = metapost.lastlog .. "\n" .. result.term
+ metapost.report("mp info: %s",result.term or "no-term")
+ elseif result.fig then
+ converted = metapost.convert(result)
+ else
+ metapost.report("mp error: unknown error, maybe no beginfig/endfig")
+ end
+ else
+ metapost.report("mp error: mem file not found")
+ end
+ return converted, result
+ end
+
+ local function getobjects(result,figure,f)
+ return figure:objects()
+ end
+
+ function metapost.convert(result, flusher)
+ metapost.flush(result, flusher)
+ return true -- done
+ end
+
+ --[[ldx--
+ <p>We removed some message and tracing code. We might even remove the flusher</p>
+ --ldx]]--
+
+ local function pdf_startfigure(n,llx,lly,urx,ury)
+ tex.sprint(format("\\startMPLIBtoPDF{%s}{%s}{%s}{%s}",llx,lly,urx,ury))
+ end
+
+ local function pdf_stopfigure()
+ tex.sprint("\\stopMPLIBtoPDF")
+ end
+
+ function pdf_literalcode(fmt,...) -- table
+ tex.sprint(format("\\MPLIBtoPDF{%s}",format(fmt,...)))
+ end
+
+ function pdf_textfigure(font,size,text,width,height,depth)
+ text = text:gsub(".","\\hbox{%1}") -- kerning happens in metapost
+ tex.sprint(format("\\MPLIBtextext{%s}{%s}{%s}{%s}{%s}",font,size,text,0,-( 7200/ 7227)/65536*depth))
+ end
+
+ 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
+
+ --[[ldx--
+ <p>Support for specials has been removed.</p>
+ --ldx]]--
+
+ function metapost.flush(result,flusher)
+ if result then
+ local figures = result.fig
+ if figures then
+ for f=1, #figures do
+ metapost.report("flushing figure %s",f)
+ local figure = figures[f]
+ local objects = getobjects(result,figure,f)
+ local fignum = tonumber(match(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
+ if 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
+ 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(metapost.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",concat(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
+
+ function metapost.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
+
+end