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package pre2par::parameter;

use Cwd;
use pre2par::files;
use pre2par::globals;
use pre2par::systemactions;

############################################
# Parameter Operations
############################################

sub usage
{
	print <<Ende;
---------------------------------------------------------
$pre2par::globals::prog
The following parameter are needed:
-s: path to the pre file
-o: path to the par file
-l: path to the ulf file (mlf or jlf file)
-v: log  process (optional)
  
Example:

perl pre2par.pl -l test.mlf -s readme.pre -o readme.par -v
                        
---------------------------------------------------------
Ende
	exit(-1);
}

#####################################
# Reading parameter
#####################################

sub getparameter
{
	while ( $#ARGV >= 0 )
	{
		my $param = shift(@ARGV);
		
		if ($param eq "-s") { $pre2par::globals::prefilename = shift(@ARGV); }
		elsif ($param eq "-o") { $pre2par::globals::parfilename = shift(@ARGV); }
		elsif ($param eq "-l") { $pre2par::globals::langfilename = shift(@ARGV); }
		elsif ($param eq "-v") { $pre2par::globals::logging = 1; }
		else
		{
			print("\n*************************************\n");
			print("Sorry, unknown parameter: $param");
			print("\n*************************************\n");
			usage();
			exit(-1);
		}
	}
}

############################################
# Controlling  the fundamental parameter
# (required for every process)
############################################

sub control_parameter
{
	if ($pre2par::globals::prefilename eq "")
	{
		print "\n************************************************\n";
		print "Error: Name of the input file not set (-s)!";
		print "\n************************************************\n";
		usage();
		exit(-1);
	}
	
	if ($pre2par::globals::parfilename eq "")
	{
		print "\n************************************************\n";
		print "Error: Name of the output file not set (-o)!";
		print "\n************************************************\n";
		usage();
		exit(-1);
	}

	if (!($pre2par::globals::prefilename =~ /\.pre\s*$/))
	{
		print "\n************************************************\n";
		print "Error: Input file is no .pre file!";
		print "\n************************************************\n";
		usage();
		exit(-1);
	}
	
	if (!($pre2par::globals::parfilename =~ /\.par\s*$/))
	{
		print "\n************************************************\n";
		print "Error: Output file is no .par file!";
		print "\n************************************************\n";
		usage();
		exit(-1);
	}
	
	# The input file has to exist
	
	pre2par::files::check_file($pre2par::globals::prefilename);
}

##########################################################
# The path parameters can be relative or absolute.
# This function creates absolute pathes.
##########################################################

sub make_path_absolute
{
	my ($pathref) = @_;

	if ( $pre2par::globals::isunix )
	{
		if (!($$pathref =~ /^\s*\//))	# this is a relative unix path
		{
			$$pathref = cwd() . $pre2par::globals::separator . $$pathref;
		}
	}

	if ( $pre2par::globals::iswin )
	{
		if (!($$pathref =~ /^\s*\w\:/))	# this is a relative windows path
		{
			$$pathref = cwd() . $pre2par::globals::separator . $$pathref;
			$$pathref =~ s/\//\\/g;
		}
	}

	$$pathref =~ s/\Q$pre2par::globals::separator\E\s*$//;	# removing ending slashes	
}

#####################################
# Writing parameter to shell
#####################################

sub outputparameter
{
	$pre2par::globals::logging ? ($logoption = " -v") : ($logoption = "");
	print "\n$pre2par::globals::prog -l $pre2par::globals::langfilename -s $pre2par::globals::prefilename -o $pre2par::globals::parfilename$logoption\n";
	
#	print "\n********************************************************\n";
#	print "This is $pre2par::globals::prog, version 1.0\n";
#	print "Input file: $pre2par::globals::prefilename\n";
#	print "Output file: $pre2par::globals::parfilename\n";
#	print "********************************************************\n";
}

1;
