#**************************************************************
#  
#  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.
#  
#**************************************************************



package installer::existence;

#############################
# Test of existence
#############################

sub exists_in_array
{
	my ($searchstring, $arrayref) = @_;

	my $alreadyexists = 0;
	
	for ( my $i = 0; $i <= $#{$arrayref}; $i++ )
	{
		if ( ${$arrayref}[$i] eq $searchstring)
		{
			$alreadyexists = 1;
			last;
		}
	}
	
	return $alreadyexists;
}

sub exists_in_array_of_hashes
{
	my ($searchkey, $searchvalue, $arrayref) = @_;

	my $valueexists = 0;

	for ( my $i = 0; $i <= $#{$arrayref}; $i++ )
	{
		my $hashref = ${$arrayref}[$i];
		
		if ( $hashref->{$searchkey} eq $searchvalue )
		{
			$valueexists = 1;
			last;
		}
	}
	
	return $valueexists;
}

#####################################################################
# Returning a specified file as base for the new
# configuration file, defined by its "gid"
#####################################################################

sub get_specified_file
{
	my ($filesarrayref, $searchgid) = @_;

	my $foundfile = 0;
	my $onefile;

	for ( my $i = 0; $i <= $#{$filesarrayref}; $i++ )
	{
		$onefile = ${$filesarrayref}[$i];
		my $filegid = $onefile->{'gid'};

		if ( $filegid eq $searchgid )
		{
			$foundfile = 1;
			last;	
		}
	}

	my $errorline = "ERROR: Could not find file $searchgid in list of files!";

	if ( $installer::globals::patch) { $errorline = "ERROR: Could not find file $searchgid in list of files! intro.bmp must be part of every patch. Please assign the flag PATCH in scp2 project."; }

	if (!($foundfile))
	{
		installer::exiter::exit_program($errorline, "get_specified_file");
	}
		
	return $onefile;
}

#####################################################################
# Returning a specified file as base for a new file,
# defined by its "Name"
#####################################################################

sub get_specified_file_by_name
{
	my ($filesarrayref, $searchname) = @_;

	my $foundfile = 0;
	my $onefile;

	for ( my $i = 0; $i <= $#{$filesarrayref}; $i++ )
	{
		$onefile = ${$filesarrayref}[$i];
		my $filename = $onefile->{'Name'};

		if ( $filename eq $searchname )
		{
			$foundfile = 1;
			last;	
		}
	}

	if (!($foundfile))
	{
		installer::exiter::exit_program("ERROR: Could not find file $searchname in list of files!", "get_specified_file_by_name");
	}
		
	return $onefile;
}

#####################################################################
# Checking existence of a specific file, defined by its "Name"
#####################################################################

sub filename_exists_in_filesarray
{
	my ($filesarrayref, $searchname) = @_;

	my $foundfile = 0;

	for ( my $i = 0; $i <= $#{$filesarrayref}; $i++ )
	{
		my $onefile = ${$filesarrayref}[$i];
		my $filename = $onefile->{'Name'};

		if ( $filename eq $searchname )
		{
			$foundfile = 1;
			last;	
		}
	}
		
	return $foundfile;
}

#####################################################################
# Checking existence of a specific file, defined by its "gid"
#####################################################################

sub filegid_exists_in_filesarray
{
	my ($filesarrayref, $searchgid) = @_;

	my $foundfile = 0;

	for ( my $i = 0; $i <= $#{$filesarrayref}; $i++ )
	{
		my $onefile = ${$filesarrayref}[$i];
		my $filegid = $onefile->{'gid'};

		if ( $filegid eq $searchgid )
		{
			$foundfile = 1;
			last;	
		}
	}
		
	return $foundfile;
}

1;