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if not modules then modules = { } end modules ['syst-lua'] = {
version = 1.001,
comment = "companion to syst-lua.tex",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
local texsprint, texprint, texwrite, texiowrite_nl = tex.sprint, tex.print, tex.write, texio.write_nl
local format = string.format
local ctxcatcodes = tex.ctxcatcodes
commands = commands or { } cs = commands -- shorter
ctx = ctx or { } -- special context namespace, code might move from there
function commands.writestatus(a,b,c,...)
if c then
texiowrite_nl(format("%-16s: %s\n",a,format(b,c,...)))
else
texiowrite_nl(format("%-16s: %s\n",a,b)) -- b can have %'s
end
end
function commands.doifelse(b)
if b then -- faster with if than with expression
texsprint(ctxcatcodes,"\\firstoftwoarguments")
else
texsprint(ctxcatcodes,"\\secondoftwoarguments")
end
end
function commands.doif(b)
if b then
texsprint(ctxcatcodes,"\\firstofoneargument")
else
texsprint(ctxcatcodes,"\\gobbleoneargument")
end
end
function commands.doifnot(b)
if b then
texsprint(ctxcatcodes,"\\gobbleoneargument")
else
texsprint(ctxcatcodes,"\\firstofoneargument")
end
end
commands.testcase = commands.doifelse
function commands.boolcase(b)
if b then texwrite(1) else texwrite(0) end
end
function commands.doifelsespaces(str)
return commands.doifelse(str:find("^ +$"))
end
local s = lpeg.Ct(lpeg.splitat(","))
local h = { }
function commands.doifcommonelse(a,b)
local ha = h[a]
local hb = h[b]
if not ha then ha = s:match(a) h[a] = ha end
if not hb then hb = s:match(b) h[b] = hb end
for i=1,#ha do
for j=1,#hb do
if ha[i] == hb[j] then
return commands.testcase(true)
end
end
end
return commands.testcase(false)
end
function commands.doifinsetelse(a,b)
local hb = h[b]
if not hb then hb = s:match(b) h[b] = hb end
for i=1,#hb do
if a == hb[i] then
return commands.testcase(true)
end
end
return commands.testcase(false)
end
function commands. def (cs,value) texsprint(ctxcatcodes,format( "\\def\\%s{%s}",cs,value)) end
function commands.edef (cs,value) texsprint(ctxcatcodes,format("\\edef\\%s{%s}",cs,value)) end
function commands.gdef (cs,value) texsprint(ctxcatcodes,format("\\gdef\\%s{%s}",cs,value)) end
function commands.xdef (cs,value) texsprint(ctxcatcodes,format("\\xdef\\%s{%s}",cs,value)) end
function commands.chardef(cs,value) texsprint(ctxcatcodes,format("\\chardef\\%s=%s\\relax",cs,value)) end
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