File indexing completed on 2024-12-15 05:11:24

 #!/usr/bin/perl -w
 
 # Simple Source metrics for C++
 # Started by Taj Sun Apr 26 03:31:00 EST 1998
 # $Id$
 
 use strict;
 
 our $bigblank = 0;
 our $bigcommt = 0;
 our $bigstrcount = 0;
 our $bigstrsize = 0;
 our $bigtotal = 0;
 our $numfiles = 0;
 
 our $blocklen = 0;
 our $numblocks = 0;
 our $blockdepth = 0;
 our $blockstart = 0;
 our $blockmin = -1;
 our $blockmax = 0;
 our @blenlist = ();
 our @extensions = ( ".cpp", ".cc", ".c", ".cxx", ".c++", ".h", ".hh", ".hpp", ".hxx", ".tcc" );
 our %byExt = ();
 
 sub processFile
 {
     our ( $file ) = @_;
     our $blank  = 0;
     our $comment  = 0;
     our $total  = 0;
     our $incomment  = 0;
     our $strcount = 0;
     our $strsize = 0;
 
     open( SOURCE, "$file" ) || 
         die "cxxmetric: Couldn't read from $file.\n";
 
     while( <SOURCE> ) {
         $total++;
 
         if ( /^\s*$/ ) {
             $blank++;
             next;
         }
 
         if ( m#^\s*//# ) {
             $comment++;
             next;
         }
 
         if ( /{/ ) {
             # block start
             $blockdepth += s/{/{/g;
 
             $blockstart = $. if $blockdepth  == 1;
         }
 
         if ( /}/ ) {
             # block end
 
             $blockdepth -= s/}/}/g;
 
             if( $blockdepth == 0 ) {
                 my $thisblocklen = $. - $blockstart;
                 push @blenlist, $thisblocklen;
                 
                 $blocklen += $thisblocklen;
                 $numblocks++;
 
                 if( $blockmax < $thisblocklen ) {
                     $blockmax = $thisblocklen;
                 }
 
                 if ( $blockmin == -1 
                     || $blockmin > $thisblocklen ) {
                     $blockmin = $thisblocklen;
                 }
             }
         }   
 
         my $start = 0;
         my $stop  = 0;
 
         if ( m#/\*# ) {
             $start = 1;
         }
         
         if( m#\*/# ) {
             $stop = 1;
         }
 
         if( $start ) {
             $incomment = 1 unless $stop;
             $comment++;
         }
         elsif ( $stop ) {
             $comment++;
             $incomment = 0;
         }
         elsif ( $incomment ) {
                 $comment++;
         }
         else {
                 my $line = $_;
                 countStrings( $line );
         }
     }
 
     our $code = $total - ($comment + $blank );
     $bigtotal += $total;
     $bigcommt += $comment;
     $bigblank += $blank;
     $bigstrcount += $strcount;
     $bigstrsize += $strsize;
     
     our $stravglen = $strcount ? ($strsize / $strcount) : 0;
 
     write;
 }
 
 sub buildFileList {
   my ( $dir ) = @_;
   my @fileList = glob( "'$dir/*'" );
   my @cxxList;
 
   foreach my $file (@fileList) {
 
     if( -d $file ) {
       push @cxxList, buildFileList( $file );
     }
     else {
       foreach my $extension (@extensions) {
         # Case-insensitive "endsWith"
         if( uc( substr( $file, length( $file ) - length( $extension ) ) ) eq uc ( $extension ) ) {
            $byExt{$extension} += 1;
            push @cxxList, $file;
         }
       }
     }
   }
 
   return @cxxList;
 }
 
 sub countStrings
 {
         my $line = shift;
 
         foreach my $string ( split( /("[^"]*)\"/, $line ) ) {
                 next unless $string =~ /^\"/;
 
                 our $strcount++;
                 our $strsize += length( $string ) - 1;
         }
 }
 
 sub pct
 {
     my( $top, $bottom ) = @_;
 
     return 0 if $bottom == 0;
 
     return int(( $top * 100 ) / $bottom);
 }
 
 our @files;
 
 if( @ARGV == 0 ) {
   @files = buildFileList(".");
 }
 else {
     foreach my $arg ( @ARGV ) {
         push @files, buildFileList($arg);
     }
 }
 
 foreach my $file ( @files ) {
     processFile( $file );
     ++$numfiles;
 }
 
 our $total =  $bigtotal;
 our $comment = $bigcommt;
 our $blank = $bigblank;
 our $code  = $bigtotal - ($bigcommt + $bigblank );
 our $file = "Total";
 
 print "\n";
 write;
 
 print "\nPercentage Code:\t" , pct( $code, $total ),"%\n";
 print "Percentage Comment:\t" , pct( $comment, $total ),"%\n";
 print "Percentage Blank:\t" , pct( $blank, $total ),"%\n";
 print "Ratio Comment/Code:\t" , pct( $comment, $code + $comment ),"% Comment\n";
 print "Average Code/File:\t" , int($code/$numfiles)," lines\n" 
     unless $numfiles == 0;
 
 if ( $numblocks > 0 ) {
     my $avg = int( $blocklen / $numblocks );
     @blenlist = sort @blenlist;
     my $median = $blenlist[ int( $numblocks / 2 )];
 print<<EOF;
 
 Blocks:\t$numblocks
 \tLengths (lines):\tmin: $blockmin\tmax: $blockmax\tmed: $median\taverage: $avg
 EOF
 }
 
 our $bigstravglen = $bigstrcount ? int($bigstrsize / $bigstrcount) : 0;
 
 print<<EOF;
 Strings:\t$bigstrcount
 \tSize (bytes):\ttotal: $bigstrsize\taverage: $bigstravglen
 EOF
 
 print "Counts by file extension:\n";
 foreach my $ext (keys %byExt) {
   print "\t$ext\t" . $byExt{$ext} . "\n";
 }
 
 exit;
 
 format STDOUT_TOP =
  Lines  Code    Comment  Blank  Strs   AvgLen File
  ------ ------- -------- ------ ------ ------ ------
 
 .
 
 format STDOUT =
 @###### @###### @###### @###### @###### @###### @*
 $total, $code, $comment, $blank, our $strcount, our $stravglen, $file
 .