diff options
Diffstat (limited to 'Master/texmf-dist/tex/context/base/meta-ini.lua')
-rw-r--r-- | Master/texmf-dist/tex/context/base/meta-ini.lua | 127 |
1 files changed, 95 insertions, 32 deletions
diff --git a/Master/texmf-dist/tex/context/base/meta-ini.lua b/Master/texmf-dist/tex/context/base/meta-ini.lua index bac1429ae1d..713ba3d5d01 100644 --- a/Master/texmf-dist/tex/context/base/meta-ini.lua +++ b/Master/texmf-dist/tex/context/base/meta-ini.lua @@ -7,7 +7,11 @@ if not modules then modules = { } end modules ['meta-ini'] = { } local tonumber = tonumber -local format, gmatch, match, gsub = string.format, string.gmatch, string.match, string.gsub +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 { } @@ -19,14 +23,14 @@ local status_metapost = logs.messenger("metapost") local patterns = { "meta-imp-%s.mkiv", "meta-imp-%s.tex", "meta-%s.mkiv", "meta-%s.tex" } -- we are compatible local function action(name,foundname) - status_metapost("loaded: library '%s'",name) + status_metapost("library %a is loaded",name) context.startreadingfile() context.input(foundname) context.stopreadingfile() end local function failure(name) - report_metapost("unknown: library '%s'",name) + report_metapost("library %a is unknown or invalid",name) end function commands.useMPlibrary(name) @@ -43,46 +47,94 @@ end local colorhash = attributes.list[attributes.private('color')] -local validdimen = lpeg.patterns.validdimen * lpeg.P(-1) - -local lpegmatch = lpeg.match 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 = match(v,"(.):(.*)") - if not typ then + local typ, var = lpegmatch(splitter,v) + if not var 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,"\\(.-)") do - 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 - return context("\\number %s",v) -- 0.4 ... + elseif not lpegmatch(dimenorname,v) then + context("\\number %s",v) -- 0.4 ... end - elseif typ == "d" then + elseif typ == "d" then -- to be documented -- dimension context("\\the\\dimexpr %s",var) - elseif typ == "n" then + elseif typ == "n" then -- to be documented -- number context("\\the\\numexpr %s",var) - elseif typ == "s" then + elseif typ == "s" then -- to be documented -- string context(var) - elseif typ == "c" then + elseif typ == "c" then -- to be documented -- color MPcolor(var) else @@ -91,12 +143,23 @@ function commands.prepareMPvariable(v) -- slow but ok 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) +-- 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 |