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#! /usr/bin/env texlua
--*-Lua-*-
-- $Id: tlmgr 7301 2008-04-03 16:52:55Z preining $

-- 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
--  uninstall         uninstall-tl.pl and local code
--  update            tl-package-manager.pl
--  install           tl-package-manager.pl
--  remove            tl-package-manager.pl
--  search            tl-package-manager.pl
--  globalsearch      tl-package-manager.pl
--  *                 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)
  local 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(name)
  if os.type == 'windows' then
    -- code from Hans
    os.execute("rmdir /s /q " .. name:gsub('/', '\\'))
  else
    ret = os.spawn({"rm", "-rf", name})
  end
  local ok = lfs.attributes(name)
  if ok then
    io.stderr:write(string.format("%s: removing '%s' didn't succeed\n",filename,name))
  end
  return ok
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("If you answer yes here the whole TeX Live installation will be removed!")
  io.stdout:write("Remove TeX Live (y/N): ") 
  local yesno = io.read()
  if yesno == 'y' or yesno == 'Y' or yesno == 'yes' or yesno == 'YES' then
    print ("Ok, 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.."/temp")
    os.remove(TEXDIR.."/install-tl.log")
    rmdir(TEXDIR.."/bin")
    -- now everything should be removed, try to remove also TEXDIR
    -- this will not succeed on win32 since texlua.exe is still in use
    -- and thus removing TEXDIR/bin will not work. Damned.
    os.remove(TEXDIR)
    os.exit(0)
  else
    print("Ok, cancelling the removal.")
    os.exit(0)
  end
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

-- in all other cases we call tl-package-manager for now ...
--
-- 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)

-- Local Variables:
-- perl-indent-level: 2
-- tab-width: 2
-- indent-tabs-mode: nil
-- End:
-- vim:set tabstop=2 expandtab: --