#! /bin/sh

#

# Copyright (c) 2004, 2012, Oracle and/or its affiliates. All rights reserved.

# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

#

# This code is free software; you can redistribute it and/or modify it

# under the terms of the GNU General Public License version 2 only, as

# published by the Free Software Foundation.  Oracle designates this

# particular file as subject to the "Classpath" exception as provided

# by Oracle in the LICENSE file that accompanied this code.

#

# This code is distributed in the hope that it will be useful, but WITHOUT

# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

# version 2 for more details (a copy is included in the LICENSE file that

# accompanied this code).

#

# You should have received a copy of the GNU General Public License version

# 2 along with this work; if not, write to the Free Software Foundation,

# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

#

# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

# or visit www.oracle.com if you need additional information or have any

# questions.

#

# Generate a charset provider class

# Required environment variables

#   NAWK	awk tool

#   TEMPDIR      temporary directory

#   HASHER	Hasher program

SPEC=$1; shift

DST=$1; shift

eval `$NAWK <$SPEC '

  /^[ \t]*copyright / { printf "COPYRIGHT_YEARS=\"%s %s\"\n", $2, $3; }

  /^[ \t]*package / { printf "PKG=%s\n", $2; }

  /^[ \t]*class / { printf "CLASS=%s\n", $2; }

'`

OUT=$DST/$CLASS.java

echo '-->' $OUT

# Header

#

$SH ${SCRIPTS}/addNotices.sh "$COPYRIGHT_YEARS" > $OUT

cat <<__END__ >>$OUT

// -- This file was mechanically generated: Do not edit! -- //

package $PKG;

import java.nio.charset.*;

public class $CLASS

    extends FastCharsetProvider

{

__END__

# Alias tables

#

$NAWK <$SPEC >>$OUT '

  BEGIN { n = 1; m = 1; }

  /^[ \t]*charset / {

    csn = $2; cln = $3;

    lcsn = tolower(csn);

    lcsns[n++] = lcsn;

    csns[lcsn] = csn;

    classMap[lcsn] = cln;

    if (n > 2)

      printf "    };\n\n";

    printf "    static final String[] aliases_%s = new String[] {\n", cln;

  }

  /^[ \t]*alias / {

    acsns[m++] = tolower($2);

    aliasMap[tolower($2)] = lcsn; 

    printf "        \"%s\",\n", $2;

  }

  END {

    printf "    };\n\n";

  }

'

# Prehashed alias and class maps

#

$NAWK <$SPEC >$TEMPDIR/aliases '

  /^[ \t]*charset / {

    csn = $2;

    lcsn = tolower(csn);

  }

  /^[ \t]*alias / {

    an = tolower($2);

    printf "%-20s \"%s\"\n", an, lcsn;

  }

'

$NAWK <$SPEC >$TEMPDIR/classes '

  /^[ \t]*charset / {

    csn = $2; cln = $3;

    lcsn = tolower(csn);

    printf "%-20s \"%s\"\n", lcsn, cln;

  }

'

${HASHER} -i Aliases <$TEMPDIR/aliases >>$OUT

${HASHER} -i Classes <$TEMPDIR/classes >>$OUT

${HASHER} -i -e Cache -t Charset <$TEMPDIR/classes >>$OUT

# Constructor

#

cat <<__END__ >>$OUT

    public $CLASS() {

        super("$PKG", new Aliases(), new Classes(), new Cache());

    }

}

__END__