#! /usr/bin/env texlua
--*-Lua-*-
-- $Id$

-- Copyright (C) 2007 Reinhard Kotucha, Norbert Preining.
-- You may freely use, modify and/or distribute this file.

-- Wrapper for scripts.

function fixwin(args_unix)
   if os.type == 'windows' then
      local args_win={}  -- new table
      args_win[0]=args_unix[1]
      for i=1, #args_unix do  
	 args_win[i]='"'..args_unix[i]..'"'
      end
      return args_win
   else
      return args_unix
   end
end

if string.find(arg[0], '/') then -- UNIX path
   filename=select(1, string.gsub(arg[0], '.*/', ''))
elseif string.find(arg[0], '\\') then -- Windows path
   filename=select(1, string.gsub(arg[0], '.*\\', ''))
else -- no path
   filename=arg[0]
end

basename=select(1, string.gsub(filename, '\.texlua$', ''))

sys=false

if string.find(basename, '-sys$') then
   basename=select(1, string.gsub(basename, '-sys$', ''))
   sys=true
end

kpse.set_program_name(filename, basename)
TEXDIR=kpse.var_value('SELFAUTOPARENT')
BINDIR=kpse.var_value('SELFAUTOLOC')

perlbin=TEXDIR..'/tlpkg/tlperl/bin/perl.exe'

os.setenv('PATH', TEXDIR..'/tlpkg/tlgs/bin;'..
	          TEXDIR..'/tlpkg/installer;'..
	          os.getenv('PATH'))

os.setenv('WGETRC', TEXDIR..'/tlpkg/installer/wgetrc')
os.setenv('PERL5LIB', TEXDIR..'/tlpkg/tlperl/lib')
os.setenv('GS_LIB', TEXDIR..'/tlpkg/tlgs/lib;'..TEXDIR..'/tlpkg/tlgs/fonts')

if sys then
   os.setenv('TEXMFVAR', kpse.var_value('TEXMFSYSVAR'))
   os.setenv('TEXMFCONFIG', kpse.var_value('TEXMFSYSCONFIG'))
   os.setenv('TEX_SYS_PROG', 'true')
end

if sys and lfs.isfile(BINDIR..'/'..basename..'.exe') then
   command={BINDIR..'/'..basename..'.exe'}
elseif lfs.isfile(BINDIR..'/'..basename..'-bin.exe') then
   command={BINDIR..'/'..basename..'-bin.exe'}
elseif lfs.isfile(BINDIR..'/'..basename..'.pl') then
   script=BINDIR..'/'..basename..'.pl'
   command={perlbin, script}
elseif kpse.find_file(basename..'.pl', 'texmfscripts') then
   script=kpse.find_file(basename..'.pl', 'texmfscripts')
   command={perlbin, script}
elseif kpse.find_file(basename..'.tlu', 'texmfscripts') then
   script=kpse.find_file(basename..'.tlu', 'texmfscripts')
   command={'texlua', script}
else
   io.stderr:write(filename..'.texlua: '..basename..
		   ': No appropriate script found.\n') 
end

for i=1, #arg do
    command[#command+1]=arg[i]
end

command=fixwin(command)

--[[ Prepend an additional hyphen to activate this code.
for i=0, #command do
   print (command[i])
end
os.exit(ret)
--]]

ret=os.spawn(command)
os.exit(ret)