script lua pour permettre la sélection du mode de compilation par un argument sur la ligne de commande

latex/texmf/ysbeamerarticle.cls

@@ -1,22 +1,44 @@
 \NeedsTeXFormat{LaTeX2e}
 \ProvidesClass{ysbeamerarticle}
-\def\@classoptionslist{french}
+\g@addto@macro\@classoptionslist{,french}
 \PassOptionsToClass{french,10pt,a4paper,DIV=18}{scrartcl}
-\PassOptionsToClass{french,aspectratio=43}{beamer}
+\PassOptionsToClass{french}{beamer}
 \RequirePackage{luacode}
 \@ifundefined{beamerarticle}{\def\CLASSNAME{beamer}}{\ifnum \beamerarticle = 1  \def\CLASSNAME{scrartcl}\else \def\CLASSNAME{beamer}\fi}%
 %
 \begin{luacode*}
-local beamer = [[\gdef\CLASSNAME{beamer}\wlog{CLASSNAME regle a beamer}]]
-local scrartcl = [[\gdef\CLASSNAME{scrartcl}\wlog{CLASSNAME regle a scrartcl}]]
-if string.sub(tex.jobname, -5) == "-PRES" then
-texio.write_nl("-PRES detecte")
-tex.print(beamer)
-elseif string.sub(tex.jobname, -6) == "-PRINT" then
-tex.print(scrartcl)
-texio.write_nl("-PRINT detecte")
+function parseargv()
+  local rep = {}
+  for k, x in pairs(arg) do
+      local kw, vw = string.match(x, "([%w_%-%.]+)=?([%w_%-%./]*)")
+      rep[kw] = vw
+  end
+  return rep
+end
+
+function string:endswith(suff)
+  return suff == "" or string.sub(self, -string.len(suff)) == suff
+end
+
+local arguments = parseargv()
+
+local beamer = [[\gdef\CLASSNAME{beamer}]]
+local scrartcl = [[\gdef\CLASSNAME{scrartcl}]]
+if arguments["-beamerarticle"] == nil then
+  texio.write_nl("-beamerarticle est nil")
+  if string.endswith(tex.jobname, "-PRES") then
+    tex.print(beamer)
+  elseif string.endswith(tex.jobname, "-PRINT") then
+    tex.print(scrartcl)
+  else
+    texio.write_nl("tex.jobname sans suffixe intéressant : "..tex.jobname)
+  end
+elseif arguments["-beamerarticle"] == "0" then
+  tex.print(beamer)
+elseif arguments["-beamerarticle"] == "1" then
+  tex.print(scrartcl)
 else
-texio.write_nl("pas de suffixe detecte")
+  texio.write_nl("Erreur : arguments.-beamerarticle vaut "..arguments["-beamerarticle"])
 end
 \end{luacode*}
 \LoadClass{\CLASSNAME}