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#! /usr/bin/env texlua
--*-Lua-*-
-- $Id: tlmgr.texlua 7030 2008-03-19 21:52:43Z reinhardk $

-- Copyright (C) 2008 Reinhard Kotucha, Norbert Preining.
-- You may freely use, modify and/or distribute this file.

-- tlmgr
-- one central managment utility for TeX Live
-- it calls several supporting scripts from texmf/scripts/texlive
-- and other places
--
-- Currently supported arguments
-- 	help				local, not implemented
-- 	generate-fmtutil		generate-fmtutil.pl
-- 	generate-updmap			generate-updmap.pl
-- 	generate-language		generate-language.pl
-- 	install				tl-package-manager.pl
-- 	remove				tl-package-manager.pl
-- 	search				tl-package-manager.pl
-- 	globalsearch			tl-package-manager.pl

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

function setupperl()
  -- For Windows we use the shipped perl interpreter, otherwise we expect 
  -- a perl to be installed
  if  os.type == 'windows' then
    perlbin=TEXDIR..'/tlpkg/tlperl/bin/perl.exe'
    os.setenv('PERL5LIB', TEXDIR..'/tlpkg/tlperl/lib')
  else
    perlbin = 'perl'
  end
end

function findscript(scriptname)
  script = kpse.find_file(scriptname, 'texmfscripts')
  if script then
    return script
  else
    io.stderr:write(filename..': Cannot find script '..scriptname)
    return false
  end
end

function rmdir(dirn)
  if os.type == 'windows' then
    ret = os.spawn({"rmdir", "/s", "/q", dirn})
  else
    ret = os.spawn({"rm", "-rf", dirn})
  end
  if ret then
    return ret
  else
    io.stderr:write(filename..': removing '..dirn.." didn't work")
  end
  return ret
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$', ''))

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


if arg[1] == 'help' then
  print ("Usage: not implemented")
  os.exit(0)
end

if  arg[1] == 'uninstall' then
  print ("removing the whole installation")
  -- we have to call perl uninstall-tl.pl AND have to remove the following files:
  -- TEXDIR/texmf{,-dist,-doc,-var,-config,}, TEXDIR/bin, TEXDIR/tlpkg, TEXDIR/install-tl.log
  -- TEXMFSYSVAR
  -- that should remove all the stuff
  -- Or other options?
  setupperl()
  script = findscript('uninstall-tl.pl')
  if script then
    command = { perlbin, script }
  else
    os.exit(1)
  end
  for i=1, #arg do
    command[#command+1] = arg[i]
  end
  command = fixwin(command)
  ret = os.spawn(command)
  -- here we should check the return value!!!
  if not ret then
    io.stderr:write(filename..': The removal script uninstall-tl.pl returned false\n')
    io.stderr:write(filename..": We don't continue removing stuff\n")
    os.exit(1)
  end
  -- on windows we have now removed the associations etc, while
  -- on unix we have removed the symlinks in case they were present
  --
  -- now we have to remove all the files and directories
  rmdir(TEXDIR.."/texmf-dist")
  rmdir(TEXDIR.."/texmf-doc")
  rmdir(TEXDIR.."/texmf-var")
  rmdir(TEXDIR.."/texmf-config")
  rmdir(TEXDIR.."/texmf")
  rmdir(TEXDIR.."/tlpkg")
  os.remove(TEXDIR.."/install-tl.log")
  rmdir(TEXDIR.."/bin")
  -- now everything should be removed, try to remove also TEXDIR
  os.remove(TEXDIR)
  os.exit(0)
end

if arg[1] == 'generate-fmtutil' then
  setupperl()
  script = findscript('generate-fmtutil.pl')
  if script then
    command = { perlbin, script }
  else
    os.exit(1)
  end
end

if arg[1] == 'generate-language' then
  setupperl()
  script = findscript('generate-language.pl')
  if script then
    command = { perlbin, script }
  else
    os.exit(1)
  end
end

if arg[1] == 'generate-updmap' then
  setupperl()
  script = findscript('generate-updmap.pl')
  if script then
    command = { perlbin, script }
  else
    os.exit(1)
  end
end

if arg[1] == 'install' or arg[1] == 'remove' or arg[1] == 'search' or
  arg[1] == 'globalsearch' then
  setupperl()
  script = findscript('tl-package-manager.pl')
  if script then
    command = { perlbin, script }
  else
    os.exit(1)
  end
end

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

command=fixwin(command)

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