389 lines
12 KiB
Perl
389 lines
12 KiB
Perl
#!perl -w
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#
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# reorder_layout.pl -- A tool to reorganize the layout.inx file based on usage
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#
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# Author: Scott Mackowski (ScottMa)
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#
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##############################################################################
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##############################################################################
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# Globals
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##############################################################################
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my %desiredoutputorder; # Hash to map: number -> {FN, DN}
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my %orderedfiles; # Hash to map: {FN, DN} -> number
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my %datalines; # Layout.inx lines associated with FN, DN
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my $currentfilenumber = 0; # Index of the current file into the sort
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# order hashtables.
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##############################################################################
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# Functions
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##############################################################################
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#
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# This sort routine is for numeric sorting...
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#
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sub numerically { $a <=> $b; }
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#
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# Displays usage info for this script and then aborts.
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#
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sub ShowUsageInformation
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{
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printf STDERR "Usage: $0 (layout.inx) (usage_file)\n";
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die "\n";
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} # ShowUsageInformation
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#
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# Flushes all lines for the current section of the INX file, using the
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# desired output order.
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#
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sub FlushFileSection
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{
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#
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# Walk through the data hash in the desired output order.
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# If the file has been seen in the current section (has data),
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# write out each of its associated lines in order, then remove
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# the entry from all hashes.
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#
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foreach $recordnumber (sort numerically keys %desiredoutputorder)
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{
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my $filename = $desiredoutputorder{$recordnumber}{FN};
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my $dirnum = $desiredoutputorder{$recordnumber}{DN};
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if ( (exists ($datalines{$filename}) )
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&& (exists ($datalines{$filename}{$dirnum}) ) )
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{
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foreach $linenumber (sort numerically keys %{ $datalines{$filename}{$dirnum} })
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{
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printf OUTPUTFILE ("%s\n", $datalines{$filename}{$dirnum}{$linenumber} );
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}
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delete $datalines{$filename}{$dirnum};
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delete $desiredoutputorder{$recordnumber};
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delete $orderedfiles{$filename}{$dirnum};
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}
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}
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#
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# Flush the extra lines from the end of the section that
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# were read but not associated with any entry.
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#
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if ($archivedlinecount > 0)
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{
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foreach $archivedlinecount (sort numerically keys %archivedlines)
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{
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printf OUTPUTFILE ("%s\n", $archivedlines{$archivedlinecount});
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delete $archivedlines{$archivedlinecount};
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}
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$archivedlinecount = 0;
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$lastarchiveassocdirnum = "";
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$lastarchiveassocfile = "";
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}
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}
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##############################################################################
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# Main
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##############################################################################
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#
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# If we have no commandline arguments, abort with usage
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#
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if ($#ARGV < 0)
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{
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&ShowUsageInformation();
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}
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#
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# First, we read the current layout.inx file and extract the list of
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# directories and their associated numbers.
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#
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$currentinputfile = $ARGV[0];
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open(INPUTFILE, $currentinputfile)
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or die "\nCan't open input file $currentinputfile\n";
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$inDirectorySection = 0; # This variable will be set when we are
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# in the section of the file that has the
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# directory number -> directory mappings.
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LINE: while( $line = <INPUTFILE> )
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{
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# Chomp the trailing newline off; lowercase the line.
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chomp $line;
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$line = lc $line;
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#
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# If this line starts with a bracket, we are entering a new section.
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# Reset the "inDirectorySection" variable, and only set it if the
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# section name matches.
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#
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if ($line =~ /^\[/)
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{
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$inDirectorySection = 0;
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}
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if ($line eq "[winntdirectories]")
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{
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$inDirectorySection = 1;
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next LINE;
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}
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#
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# Skip lines outside of the targetted section and comment lines.
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#
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next LINE if (! $inDirectorySection);
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next LINE if ($line =~ /^@\*/);
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#
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# Extract the directory name from the line as everything on the
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# right side of the = sign, removing leading whitespace.
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# Also extract the directory number as the string of digits
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# immediately preceding the = sign, removing trailing whitespace.
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#
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($directory = $line) =~ s/.*=\s*(.*)/$1/;
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($dirnum = $line) =~ s/(.*:)?(\d*)\s*=.*/$2/;
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#
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# If this is a good line, the directory number will have been
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# extracted, save this directory into the masterdirectoryhash.
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#
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if ($dirnum)
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{
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$directory =~ s/^\"(.*)\"$/$1/;
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$directory =~ s/^(.*)\\$/$1/;
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$masterdirectoryhash{$directory} = $dirnum;
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}
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} # while (there is still data in this inputfile)
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close (INPUTFILE); # Close the input file...
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#
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# Now, we read the desired output order file and create the ordering
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# for this set of files.
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#
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$currentinputfile = $ARGV[1];
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open(INPUTFILE, $currentinputfile)
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or die "\nCan't open input file $currentinputfile\n";
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LINE: while( $line = <INPUTFILE> )
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{
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# Chomp the trailing newline off; lowercase the line.
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chomp $line;
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$line = lc $line;
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#
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# Extract the directory name from the line as everything to the
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# left of the last backslash (excluding the backslash itself).
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# Also extract the filename as everything to the right of the
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# last backslash (excluding the backslash itself).
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#
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($directory = $line) =~ s/(.*)\\.*/$1/;
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($filename = $line) =~ s/.*\\(.*)/$1/;
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#
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# Remove any leading backslash from the directory name.
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#
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$directory =~ s/^\\(.*)/$1/;
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#
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# If this is one of the directories we saw in the original layout.inx
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# file, add this filename/pathname combonation as the next file to
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# place. We save both a forward lookup: {FN, DN} -> number, and a
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# ordering lookup: number -> {FN, DN}.
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#
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if (exists($masterdirectoryhash{$directory}))
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{
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if ( (! exists($orderedfiles{$filename}))
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|| (! exists($orderedfiles{$filename}{$masterdirectoryhash{$directory}})) )
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{
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$desiredoutputorder{$currentfilenumber}{FN} = $filename;
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$desiredoutputorder{$currentfilenumber}{DN} = $masterdirectoryhash{$directory};
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$orderedfiles{$filename}{$masterdirectoryhash{$directory}} = $currentfilenumber;
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$currentfilenumber++;
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}
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}
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} # while (there is still data in this inputfile)
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close (INPUTFILE); # Close the input file...
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#
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# Finally, we re-read the supplied layout.inx file, and simulataneously
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# create the output file. This file has the same name as the input file,
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# with ".new" appended to it.
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#
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$currentinputfile = $ARGV[0];
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open(INPUTFILE, $currentinputfile)
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or die "\nCan't open input file $currentinputfile\n";
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open(OUTPUTFILE, ">" . $currentinputfile . ".new")
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or die "\nCan't open output file $currentinputfile.new\n";
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$inFileSection = 0; # This variable will be set when we are
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# in any section of the file that has the
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# actual files' lines to be reordered.
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$archivedlinecount = 0; # These variables hold lines that are to
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$lastarchiveassocfile = ""; # be associated with the next real line
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$lastarchiveassocdirnum = ""; # such as comments, etc.
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LINE: while( $line = <INPUTFILE> )
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{
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# Chomp the trailing newline off.
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chomp $line;
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#
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# If this line starts with a bracket, we are entering a new section.
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# Reset the "inFileSection" variable, flush the file section's data,
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# and only set it if the section name matches.
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#
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if ($line =~ /^\[/)
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{
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$inFileSection = 0;
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&FlushFileSection();
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}
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if ($line =~ /^\[SourceDisksFiles/)
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{
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$inFileSection = 1;
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printf OUTPUTFILE ("%s\n", $line);
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next LINE;
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}
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#
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# Skip lines outside of the targetted section, simply copying them
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# into the output file.
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#
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if (! $inFileSection)
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{
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printf OUTPUTFILE ("%s\n", $line);
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next LINE;
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}
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#
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# If the line does not contain an equals sign, assume it is a comment.
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#
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if ($line !~ /=/)
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{
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#
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# If we are currently associated with an entry (it had comment lines
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# above it), add these new lines to the corresponding data hash.
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# Otherwise, archive these new lines to be associated later.
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#
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if ($lastarchiveassocdirnum)
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{
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$datalines{$lastarchiveassocfile}{$lastarchiveassocdirnum}{scalar(keys %{ $datalines{$lastarchiveassocfile}{$lastarchiveassocdirnum} })} = $line;
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}
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else
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{
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$archivedlines{$archivedlinecount} = $line;
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$archivedlinecount++;
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}
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}
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else
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{
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#
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# Extract the filename as everything to the left of the equals
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# sign (except the prodfilt tags), removing trailing whitespace.
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# Also, extract everything to the right of the equals as a set
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# of comma-delimited fields.
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#
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($filename = $line) =~ s/(.*:)?(\S*.?\S*)\s*=.*/$2/;
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($fields = $line) =~ s/.*=\s*(.*)/$1/;
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#
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# Split the fields along the commas and examine the eighth field.
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# Extract it as a number that represents the directory entry.
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#
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my @linefields = split(',', $fields);
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$dirnum = $linefields[7];
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$dirnum =~ s/\D*//g;
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#
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# Check the eleventh field. If it exists, use the contents of it,
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# stripping any trailing comments, as the real filename.
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#
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if ($#linefields > 9)
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{
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if ($linefields[10] ne "")
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{
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$filename = $linefields[10];
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$filename =~ s/;.*//;
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}
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}
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#
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# Strip any trailing whitespace from the filename.
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#
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$filename =~ s/ *$//g;
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#
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# If there were lines read before this one that need to be
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# associated with a data line (such as comments), add those
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# to the data hash for this entry now, removing them from
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# the temporary archived lines variable.
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# Now, set the lastarchiveassoc* variables so trailing
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# comments are mapped with this set.
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#
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if ($archivedlinecount > 0)
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{
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foreach $archivedlinecount (sort numerically keys %archivedlines)
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{
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$datalines{$filename}{$dirnum}{scalar(keys %{ $datalines{$filename}{$dirnum} })} = $archivedlines{$archivedlinecount};
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delete $archivedlines{$archivedlinecount};
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}
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$archivedlinecount = 0;
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$lastarchiveassocdirnum = $dirnum;
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$lastarchiveassocfile = $filename;
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}
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#
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# Reset the lastarchiveassoc* variables so the next comment
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# lines are not mapped with this entry, but are instead
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# archived for their successor.
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#
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else
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{
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$lastarchiveassocdirnum = 0;
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$lastarchiveassocfile = "";
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}
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#
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# Add the current line to the data hash for this entry.
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#
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$datalines{$filename}{$dirnum}{scalar(keys %{ $datalines{$filename}{$dirnum} })} = $line;
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#
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# If this file has not already been ordered (wasn't in the
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# supplied order file and hasn't already been seen), assign
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# it the next available slot and record the file as seen.
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#
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if ( (! exists($orderedfiles{$filename}))
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|| (! exists($orderedfiles{$filename}{$dirnum})) )
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{
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$desiredoutputorder{$currentfilenumber}{FN} = $filename;
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$desiredoutputorder{$currentfilenumber}{DN} = $dirnum;
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$orderedfiles{$filename}{$dirnum} = $currentfilenumber;
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$currentfilenumber++;
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}
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}
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} # while (there is still data in this inputfile)
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close (INPUTFILE); # Close the input file...
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&FlushFileSection(); # Flush any data from the last section here
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close (OUTPUTFILE); # Close the output file...
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