diff options
Diffstat (limited to 'Master/texmf-dist/tex/context/base/mkiv/meta-ini.lua')
-rw-r--r-- | Master/texmf-dist/tex/context/base/mkiv/meta-ini.lua | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/Master/texmf-dist/tex/context/base/mkiv/meta-ini.lua b/Master/texmf-dist/tex/context/base/mkiv/meta-ini.lua new file mode 100644 index 00000000000..8f713126323 --- /dev/null +++ b/Master/texmf-dist/tex/context/base/mkiv/meta-ini.lua @@ -0,0 +1,137 @@ +if not modules then modules = { } end modules ['meta-ini'] = { + version = 1.001, + comment = "companion to meta-ini.mkiv", + author = "Hans Hagen, PRAGMA-ADE, Hasselt NL", + copyright = "PRAGMA ADE / ConTeXt Development Team", + license = "see context related readme files" +} + +local tonumber = tonumber +local format = string.format +local lpegmatch, lpegpatterns = lpeg.match, lpeg.patterns +local P, Cs, R, S, C, Cc = lpeg.P, lpeg.Cs, lpeg.R, lpeg.S, lpeg.C, lpeg.Cc + +local context = context + +metapost = metapost or { } + +-- experimental + +local colorhash = attributes.list[attributes.private('color')] + +local textype = tex.type +local MPcolor = context.MPcolor + +-- local validdimen = lpegpatterns.validdimen * P(-1) +-- +-- function commands.prepareMPvariable(v) -- slow but ok +-- if v == "" then +-- MPcolor("black") +-- else +-- local typ, var = match(v,"(.):(.*)") +-- if not typ then +-- -- parse +-- if colorhash[v] then +-- MPcolor(v) +-- elseif tonumber(v) then +-- context(v) +-- elseif lpegmatch(validdimen,v) then +-- return context("\\the\\dimexpr %s",v) +-- else +-- for s in gmatch(v,"\\([a-zA-Z]+)") do -- can have trailing space +-- local t = textype(s) +-- if t == "dimen" then +-- return context("\\the\\dimexpr %s",v) +-- elseif t == "count" then +-- return context("\\the\\numexpr %s",v) +-- end +-- end +-- context("\\number %s",v) -- 0.4 ... +-- end +-- elseif typ == "d" then -- to be documented +-- -- dimension +-- context("\\the\\dimexpr %s",var) +-- elseif typ == "n" then -- to be documented +-- -- number +-- context("\\the\\numexpr %s",var) +-- elseif typ == "s" then -- to be documented +-- -- string +-- context(var) +-- elseif typ == "c" then -- to be documented +-- -- color +-- MPcolor(var) +-- else +-- context(var) +-- end +-- end +-- end + +-- we can actually get the dimen/count values here + +local dimenorname = + lpegpatterns.validdimen / function(s) + context("\\the\\dimexpr %s",s) + end + + (C(lpegpatterns.float) + Cc(1)) * lpegpatterns.space^0 * P("\\") * C(lpegpatterns.letter^1) / function(f,s) + local t = textype(s) + if t == "dimen" then + context("\\the\\dimexpr %s\\%s",f,s) + elseif t == "count" then + context("\\the\\numexpr \\%s * %s\\relax",s,f) -- <n>\scratchcounter is not permitted + end + end + +local splitter = lpeg.splitat(":",true) + +function commands.prepareMPvariable(v) -- slow but ok + if v == "" then + MPcolor("black") + else + local typ, var = lpegmatch(splitter,v) + if not var then + -- parse + if colorhash[v] then + MPcolor(v) + elseif tonumber(v) then + context(v) + elseif not lpegmatch(dimenorname,v) then + context("\\number %s",v) -- 0.4 ... + end + elseif typ == "d" then -- to be documented + -- dimension + context("\\the\\dimexpr %s",var) + elseif typ == "n" then -- to be documented + -- number + context("\\the\\numexpr %s",var) + elseif typ == "s" then -- to be documented + -- string + context(var) + elseif typ == "c" then -- to be documented + -- color + MPcolor(var) + else + context(var) + end + end +end + +-- function metapost.formatnumber(f,n) -- just lua format +-- f = gsub(f,"@(%d)","%%.%1") +-- f = gsub(f,"@","%%") +-- f = format(f,tonumber(n) or 0) +-- f = gsub(f,"e([%+%-%d]+)",function(s) +-- return format("\\times10^{%s}",tonumber(s) or s) -- strips leading zeros +-- end) +-- context.mathematics(f) +-- end + +-- formatters["\\times10^{%N}"](s) -- strips leading zeros too + +local one = Cs((P("@")/"%%." * (R("09")^1) + P("@")/"%%" + 1)^0) +local two = Cs((P("e")/"" * ((S("+-")^0 * R("09")^1) / function(s) return format("\\times10^{%s}",tonumber(s) or s) end) + 1)^1) + +-- local two = Cs((P("e")/"" * ((S("+-")^0 * R("09")^1) / formatters["\\times10^{%N}"]) + 1)^1) + +function metapost.formatnumber(fmt,n) -- just lua format + context.mathematics(lpegmatch(two,format(lpegmatch(one,fmt),n))) +end |