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%% Copyright 2000-2005 Werner Lemberg <wl@gnu.org> and
%%                     Han The Thanh <hanthethanh@gmx.net>.
%% This file is part of vntex.  License: LPPL, version 1.3 or newer,
%% according to http://www.latex-project.org/lppl.txt
%%
%
%   1.0  2000/01/27
%
%     Initial release.
%
%   post 1.0  ?
%
%     . Require `ifthen' package.
%     . Don't require `t5' package.
%     . New options `mviscii', `noinputenc', `nocaptions', `utf8', and
%       `utf8x'.
%     . Don't define \prefacename and friends but include vncaps.tex (if
%       `nocaptions' isn't set).
%
%   1.1  2005/05/22
%
%     . Simplify logic for `utf8' and `utf8x' options.
%     . Add copyright message and history.
%     . Use \endlinechar to avoid `%' at end of line.
%     . Fix package message.
%     . Some other minor clean-up.
%

\ProvidesPackage{vietnam}[2005/05/22 v1.1 support for Vietnamese]

\RequirePackage{ifthen}

\newboolean{optenc}
\newboolean{noinputenc}
\newboolean{nocaptions}
\newboolean{vnutf8}

\DeclareOption{viscii}
  {\PassOptionsToPackage{viscii}{inputenc}
   \setboolean{optenc}{true}}
\DeclareOption{tcvn}
  {\PassOptionsToPackage{tcvn}{inputenc}
   \setboolean{optenc}{true}}
\DeclareOption{vps}
  {\PassOptionsToPackage{vps}{inputenc}
   \setboolean{optenc}{true}}
\DeclareOption{mviscii}
  {\PassOptionsToPackage{mviscii}{inputenc}
   \setboolean{optenc}{true}}
\DeclareOption{noinputenc}
  {\setboolean{noinputenc}{true}}
\DeclareOption{nocaptions}
  {\setboolean{nocaptions}{true}}
\DeclareOption{utf8}
  {\PassOptionsToPackage{utf8}{inputenc}
   \setboolean{optenc}{true}}
\DeclareOption{utf8x}
  {\PassOptionsToPackage{utf8x}{inputenc}
   \setboolean{optenc}{true}
   \setboolean{vnutf8}{true}}

\ProcessOptions

\ifthenelse{\boolean{vnutf8}}
  {\RequirePackage{ucs}}
  {}

\RequirePackage[T5]{fontenc}

\ifthenelse{\boolean{noinputenc}}
  {\ifthenelse{\boolean{optenc}}
     {\PackageWarning{vietnam}
        {Selected input encoding is ignored if `noinputenc' is used}}
     {}}
  {\ifthenelse{\boolean{optenc}}
     {}
     {\PackageWarning{vietnam}
        {No input encoding specified, using VISCII as default}
      \PassOptionsToPackage{viscii}{inputenc}}
   \RequirePackage{inputenc}}

\ifthenelse{\boolean{nocaptions}}
  {}
  {\input{vncaps.tex}
   \AtBeginDocument{\captionsvietnam
                    \datevietnam}}

\frenchspacing

\endinput
%%
%% End of file `vietnam.sty'.