diff options
Diffstat (limited to 'Master/texmf-dist/tex/context/base/mkiv/tabl-tbl.lua')
-rw-r--r-- | Master/texmf-dist/tex/context/base/mkiv/tabl-tbl.lua | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/Master/texmf-dist/tex/context/base/mkiv/tabl-tbl.lua b/Master/texmf-dist/tex/context/base/mkiv/tabl-tbl.lua new file mode 100644 index 00000000000..13d899de647 --- /dev/null +++ b/Master/texmf-dist/tex/context/base/mkiv/tabl-tbl.lua @@ -0,0 +1,52 @@ +if not modules then modules = { } end modules ['tabl-tbl'] = { + version = 1.001, + comment = "companion to tabl-tbl.mkiv", + author = "Hans Hagen, PRAGMA-ADE, Hasselt NL", + copyright = "PRAGMA ADE / ConTeXt Development Team", + license = "see context related readme files" +} + +-- A couple of hacks ... easier to do in Lua than in regular TeX. More will +-- follow. + +local tonumber = tonumber +local gsub, rep, sub, find = string.gsub, string.rep, string.sub, string.find +local P, C, Cc, Ct, lpegmatch = lpeg.P, lpeg.C, lpeg.Cc, lpeg.Ct, lpeg.match + +local context = context +local commands = commands + +local texsetcount = tex.setcount + +local separator = P("|") +local nested = lpeg.patterns.nested +local pattern = Ct((separator * (C(nested) + Cc("")) * C((1-separator)^0))^0) + +local ctx_settabulatelastentry = context.settabulatelastentry +local ctx_settabulateentry = context.settabulateentry + +local function presettabulate(preamble) + preamble = gsub(preamble,"~","d") -- let's get rid of ~ mess here + if find(preamble,"*",1,true) then + -- todo: lpeg but not now + preamble = gsub(preamble, "%*(%b{})(%b{})", function(n,p) + return rep(sub(p,2,-2),tonumber(sub(n,2,-2)) or 1) + end) + end + local t = lpegmatch(pattern,preamble) + local m = #t - 2 + texsetcount("global","c_tabl_tabulate_nofcolumns", m/2) + texsetcount("global","c_tabl_tabulate_has_rule_spec_first", t[1] == "" and 0 or 1) + texsetcount("global","c_tabl_tabulate_has_rule_spec_last", t[m+1] == "" and 0 or 1) + for i=1,m,2 do + ctx_settabulateentry(t[i],t[i+1]) + end + ctx_settabulatelastentry(t[m+1]) +end + +interfaces.implement { + name = "presettabulate", + actions = presettabulate, + arguments = "string", + scope = "private", +} |