1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
|
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 = string.gsub, string.rep, string.sub
local P, C, Cc, Ct, lpegmatch = lpeg.P, lpeg.C, lpeg.Cc, lpeg.Ct, lpeg.match
local settexcount = tex.setcount
local separator = P("|")
local nested = lpeg.patterns.nested
local pattern = Ct((separator * (C(nested) + Cc("")) * C((1-separator)^0))^0)
function commands.presettabulate(preamble)
-- 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)
local t = lpegmatch(pattern,preamble)
local m = #t - 2
settexcount("global","noftabulatecolumns", m/2)
settexcount("global","tabulatehasfirstrulespec", t[1] == "" and 0 or 1)
settexcount("global","tabulatehaslastrulespec", t[m+1] == "" and 0 or 1)
for i=1,m,2 do
context.settabulateentry(t[i],t[i+1])
end
context.setlasttabulateentry(t[m+1])
end
|
