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package installer::substfilenamefiles;

use installer::exiter;
use installer::globals;
use installer::logger;
use installer::pathanalyzer;
use installer::systemactions;

#########################################################
# Analyzing files with flag SUBST_FILENAME
#########################################################

sub resolving_subst_filename_flag
{
	my ($filesarrayref, $variableshashref, $languagestringref) = @_;

	my $replacedirbase = installer::systemactions::create_directories("change_filename", $languagestringref);

	installer::logger::include_header_into_logfile("Files with flag SUBST_FILENAME:");

	for ( my $i = 0; $i <= $#{$filesarrayref}; $i++ )
	{
		my $onefile = ${$filesarrayref}[$i];
		my $styles = "";

		if ( $onefile->{'Styles'} ) { $styles = $onefile->{'Styles'}; }
	
		if ( $styles =~ /\bSUBST_FILENAME\b/ )
		{
			# Files with flag SUBST_FILENAME must have a "Substitute" key
			if (( ! $onefile->{'Substitute'} ) && ( ! $onefile->{'InstallName'} ))
			{
				installer::exiter::exit_program("ERROR: SUBST_FILENAME is set, but no Substitute and no InstallName defined at file $onefile->{'gid'}!", "resolving_subst_filename_flag");
			}
			
			# Language specific subdirectory
			my $onelanguage = $onefile->{'specificlanguage'};
			
			if ($onelanguage eq "")
			{
				$onelanguage = "00";	# files without language into directory "00"
			}
			
			my $replacedir = $replacedirbase . $installer::globals::separator . $onelanguage . $installer::globals::separator; 
			installer::systemactions::create_directory($replacedir);	# creating language specific directories

			# copy files and edit them with the variables defined in the zip.lst
				
			my $longfilename = 0;
				
			my $onefilename = $onefile->{'Name'};

			my $sourcepath = $onefile->{'sourcepath'};
				
			# if ( $onefilename =~ /^\s*\Q$installer::globals::separator\E/ )	# filename begins with a slash, for instance /registry/schema/org/openoffice/VCL.xcs
			if ( $onefilename =~ /\Q$installer::globals::separator\E/ )	# filename begins with a slash, for instance /registry/schema/org/openoffice/VCL.xcs
			{
				$onefilename =~ s/^\s*\Q$installer::globals::separator\E//;
				$longfilename = 1;
			}
	
			my $destinationpath = $replacedir . $onefilename;  
			my $movepath = $destinationpath . ".orig";
			my $destdir = $replacedir;

			if ( $longfilename )	# the destination directory has to be created before copying
			{
				$destdir = $movepath;
				installer::pathanalyzer::get_path_from_fullqualifiedname(\$destdir);
				installer::systemactions::create_directory_structure($destdir);
			}

			my $copysuccess = installer::systemactions::copy_one_file($sourcepath, $movepath);

			if ( $copysuccess )
			{
				if ( $onefile->{'Substitute'} )
				{
					my $substitute = $onefile->{'Substitute'};

					my $newfilename = $destinationpath;
					installer::pathanalyzer::make_absolute_filename_to_relative_filename(\$newfilename);
					eval '$newfilename =~ ' . "$substitute";
		
					my $longnewfilename = $destdir . $newfilename;

					$copysuccess = installer::systemactions::copy_one_file($movepath, $longnewfilename);				

					# Saving the new file name
					$onefile->{'Name'} = $newfilename;
				
					# Saving the new destination
					my $newdest = $onefile->{'destination'};
					installer::pathanalyzer::get_path_from_fullqualifiedname(\$newdest);
					$onefile->{'destination'} = $newdest . $newfilename;

					# Saving the original source, where the file was found
					$onefile->{'originalsourcepath'} = $onefile->{'sourcepath'};

					# Writing the new sourcepath into the hashref, even if it was not copied
					$onefile->{'sourcepath'} = $longnewfilename;
				}
				else
				{
					if ( $onefile->{'InstallName'} )
					{
						my $installname = $onefile->{'InstallName'};

						my $newfilename = $destinationpath;
						installer::pathanalyzer::make_absolute_filename_to_relative_filename(\$newfilename);
		
						my $longnewfilename = $destdir . $installname;

						$copysuccess = installer::systemactions::copy_one_file($movepath, $longnewfilename);				

						# Saving the new file name
						$onefile->{'Name'} = $installname;

						# Saving the new destination
						my $newdest = $onefile->{'destination'};
						installer::pathanalyzer::get_path_from_fullqualifiedname(\$newdest);
						$onefile->{'destination'} = $newdest . $installname;

						# Saving the original source, where the file was found
						$onefile->{'originalsourcepath'} = $onefile->{'sourcepath'};

						# Writing the new sourcepath into the hashref, even if it was not copied
						$onefile->{'sourcepath'} = $longnewfilename;		
					}
				}
			}
		}
	}

	my $infoline = "\n";
	push( @installer::globals::logfileinfo, $infoline);
}

1;
