#!/usr/bin/env perl

#**************************************************************
#  
#  Licensed to the Apache Software Foundation (ASF) under one
#  or more contributor license agreements.  See the NOTICE file
#  distributed with this work for additional information
#  regarding copyright ownership.  The ASF licenses this file
#  to you under the Apache License, Version 2.0 (the
#  "License"); you may not use this file except in compliance
#  with the License.  You may obtain a copy of the License at
#  
#    http://www.apache.org/licenses/LICENSE-2.0
#  
#  Unless required by applicable law or agreed to in writing,
#  software distributed under the License is distributed on an
#  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
#  KIND, either express or implied.  See the License for the
#  specific language governing permissions and limitations
#  under the License.
#  
#**************************************************************

if ( $#ARGV != 3 ) {
	print STDERR "usage: cl2c.pl <file.cl> <file.c> <file.src> <resname>\n";
	exit -1;
}

$CL=$ARGV[0];
$C=$ARGV[1];
$SRC=$ARGV[2];
$RNAME=$ARGV[3];

sub sconv
{
	local($s)=@_[0];
	local($o,$c);
	$_="";
	foreach $o ( unpack("C*",$s) ) {
		$c=chr($o);
		if ( $o >= 32 && $o < 127 ) {
			$_ .= $c;
		} else {
			$_ .= sprintf("\\%o", $o);
		}
	}
	return $_;
}


sub makeneutral {

	print COUT "\n\n/**\n";
	print COUT " * Get neutral language for specific language.\n";
	print COUT " * This simplifies the getText switch cases and allows to handle\n";
	print COUT " * previously unknown language derivates due to foreign installations.\n";
	print COUT " * If you want to distinguish between some dialects change this function\n";
	print COUT " * to return the desired nLang before doing the bit masking stuff.\n";
	print COUT " * See xlang.h for defined LANGUAGE_*\n";
	print COUT " */\n";

	# taken from tools/source/intntl/intn.cxx International::GetNeutralLanguage
	print COUT "static USHORT GetNeutralLanguage( USHORT nLang )\n";
	print COUT "{\n";
	print COUT "\tUSHORT nPrimLang;\n";
	print COUT "\n";
	print COUT "\t/* ignore LANGUAGE_USER* */\n";
	print COUT "\tif ( (nLang & 0x03FF) >= 0x0200 )\n";
	print COUT "\t	return nLang;\n";
	print COUT "\n";
	print COUT "\tnLang &= 0x03FF;\n";
	print COUT "\n";
	print COUT "\tnPrimLang = nLang | 0x0400;\n";
	print COUT "\n";
	print COUT "\tswitch ( nPrimLang )\n";
	print COUT "\t{\n";
	print COUT "\t\tcase LANGUAGE_CHINESE_TRADITIONAL:\n";
	print COUT "\t\t\tnLang = LANGUAGE_CHINESE;\n";
	print COUT "\t\t\tbreak;\n";
	print COUT "\t\tcase LANGUAGE_ENGLISH_US:\n";
	print COUT "\t\t\tnLang = LANGUAGE_ENGLISH;\n";
	print COUT "\t\t\tbreak;\n";
	print COUT "\t\tcase LANGUAGE_NORWEGIAN_BOKMAL:\n";
	print COUT "\t\t\tnLang = LANGUAGE_NORWEGIAN;\n";
	print COUT "\t\t\tbreak;\n";
	print COUT "\t\tcase LANGUAGE_PORTUGUESE_BRAZILIAN:\n";
	print COUT "\t\t\tnLang = LANGUAGE_PORTUGUESE;\n";
	print COUT "\t\t\tbreak;\n";
	print COUT "\n";
	print COUT "\t\tdefault:\n";
	print COUT "\t\t\tnLang = nPrimLang;\n";
	print COUT "\t\t\tbreak;\n";
	print COUT "\t}\n";
	print COUT "\n";
	print COUT "\treturn nLang;\n";
	print COUT "}\n";
	print COUT "\n";

}


sub maketext {

	print COUT "\n\n/**\n";
	print COUT " * Get text resource for current language.\n";
	print COUT " * Remember that 8-bit characters are shown in\n";
	print COUT " * system dependend code pages!\n";
	print COUT " * To get correct results you will have to distuinguish\n";
	print COUT " * for example between UNIX and WIN and OS2 target systems.\n";
	print COUT " */\n";

	print COUT "static char* getText( int nResource )\n{\n";
	print COUT "\tswitch( nResource ) {\n";

	$resflag=0;
	$strname="";
	$cnt=0;
	$text_english="";

	while (<SRCIN>) {
		$resflag=1 if ( /Resource\s$RNAME/ );

		if ( /\{/ ) {
			if ( ++$cnt == 2 ) {
				# start language
				$text_english="";
				print COUT "\t\t\tswitch( _nLanguage ) {\n";
				next;
			}
		}

		if ( /\}/ ) {
			if ( --$cnt == 1 ) {
				# end language

				if ( $text_english ne "" ) {
					print COUT "\t\t\t\tcase LANGUAGE_ENGLISH:\n\t\t\t\tdefault:\n";
					print COUT "\t\t\t\treturn(" . $text_english . ")\;\n";
				}

				print COUT "\t\t\t}\n\t\t\tbreak;\n";
				next;
			} elsif ( $cnt == 0 ) {
				# end of resource
				$resflag=0;
				print COUT "\t\tdefault:\n\t\t\tbreak;\n";
				print COUT "\t}\n\treturn(\"\");\n}\n";
				next;
			}

		}

		if ( $resflag && $cnt == 1) {
			if ( /\sString\s(([A-Z]|\_|[0-9]|[a-z])*)/ ) {
				$strname=$1;
				print COUT "\t\tcase " . $strname . ":\n";
			}
		}

		if ( $cnt == 2 && /^\s*Text/ ) {
			$langname="german";
			($textdef,@textx)=split(/=/);
			$text=join("=",@textx);
			if ( $textdef =~ /\[\s+(.*)\s+\]/ ) {
				$langname=$1;
			}
            else {
                $langname="ENGLISH_US";     # no [...] => not to be translated
            }

			$langname="LANGUAGE_" . uc($langname);

			chop($text) while ( $text=~/(\r|\n|\;)$/ );
			$text=sconv($text);
			# english_us, not english because it's developer's pigeon
			if ( $langname eq "LANGUAGE_ENGLISH_US" ) {
				$text_english=$text;
			}
            # ISO coded, obtain at least the default
            elsif ( $langname =~ /^LANGUAGE_EN-US$/ ) {
				$text_english=$text;
            }
			# we don't know about USER languages, ENGLISH will be appended later
			elsif ( ! ( $langname =~ /LANGUAGE_USER/ || $langname =~ /^LANGUAGE_ENGLISH$/ ) ) {
				# ER 28.04.99: for the moment only German and English are
				# exported, because we have a problem with non-existing
				# character code tables for systems other than Windoze.
				# => Chinese would be definitely mixed up and we don't
				# want to insult anybody.. others like Spanish would look
				# very ugly, but we'll have to live with bad German Umlauts.
				if ( $langname =~ /LANGUAGE_(GERMAN|ENGLISH)/ ) {
					print COUT "\t\t\t\tcase " . $langname . ":\n";
					print COUT "\t\t\t\treturn(" . $text . ")\;\n";
				}
			}

		}
	}

	makeneutral();

}

open(CLIN,"<$CL") || die "can not open $CL\n";
open(SRCIN,"<$SRC") || die "can not open $CL\n";
open(COUT,">$C") || die "can not open $CL\n";

$ccnt=0;
$incomment=0;
while(<CLIN>) {
	if ( /^\/\*--(-*)/ ) {
		$incomment=1;
		$ccnt++;
	}

	print COUT $_ if ( $incomment==0 || $ccnt==1 );

	&maketext() if ( /^static USHORT _nLanguage=/ );

	if ( /(-*)--\*\/$/ ) {
		$incomment=0;
	}

}

close(CLIN);
close(SRCIN);
close(COUT);

exit 0;