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      1 #!/usr/bin/perl -w
      2 
      3 # Copyright (C) 2005, 2006 Apple Computer, Inc.  All rights reserved.
      4 #
      5 # Redistribution and use in source and binary forms, with or without
      6 # modification, are permitted provided that the following conditions
      7 # are met:
      8 #
      9 # 1.  Redistributions of source code must retain the above copyright
     10 #     notice, this list of conditions and the following disclaimer. 
     11 # 2.  Redistributions in binary form must reproduce the above copyright
     12 #     notice, this list of conditions and the following disclaimer in the
     13 #     documentation and/or other materials provided with the distribution. 
     14 # 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
     15 #     its contributors may be used to endorse or promote products derived
     16 #     from this software without specific prior written permission. 
     17 #
     18 # THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
     19 # EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     20 # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     21 # DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     22 # DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     23 # (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     24 # LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     25 # ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     26 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     27 # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     28 
     29 # "report-include-statistics" script for WebKit Open Source Project
     30 
     31 use strict;
     32 use File::Find;
     33 
     34 find(\&wanted, @ARGV ? @ARGV : ".");
     35 
     36 my %paths;
     37 my %sources;
     38 my %includes;
     39 
     40 sub wanted
     41 {
     42     my $file = $_;
     43 
     44     if ($file eq "icu") {
     45         $File::Find::prune = 1;
     46         return;
     47     }
     48 
     49     if ($file !~ /^\./ && $file =~ /\.(h|cpp|c|mm|m)$/) {
     50         $paths{$file} = $File::Find::name;
     51         $sources{$file} = $File::Find::name if $file !~ /\.h/;
     52         open FILE, $file or die;
     53         while (<FILE>) {
     54             if (m-^\s*#\s*(include|import)\s+["<]((\S+/)*)(\S+)[">]-) {
     55                 my $include = ($2 eq "sys/" ? $2 : "") . $4;
     56                 $includes{$file}{$include}++;
     57             }
     58         }
     59         close FILE;
     60     }
     61 }
     62 
     63 my %totalIncludes;
     64 
     65 sub fillOut
     66 {
     67     my ($file) = @_;
     68 
     69     return if defined $totalIncludes{$file};
     70 
     71     for my $include (keys %{ $includes{$file} }) {
     72         $totalIncludes{$file}{$include} = 1;
     73         fillOut($include);
     74         for my $i (keys %{ $totalIncludes{$include} }) {
     75             $totalIncludes{$file}{$i} = 1;
     76         }
     77     }
     78 }
     79 
     80 my %inclusionCounts;
     81 for my $file (keys %includes) {
     82     $inclusionCounts{$file} = 0;
     83     fillOut($file);
     84 }
     85 
     86 for my $file (keys %sources) {
     87     for my $include (keys %{ $totalIncludes{$file} }) {
     88         $inclusionCounts{$include}++;
     89     }
     90 }
     91 
     92 for my $file (sort mostincludedcmp keys %includes) {
     93     next if !$paths{$file};
     94     my $count = $inclusionCounts{$file};
     95     my $numIncludes = keys %{ $includes{$file} };
     96     my $numTotalIncludes = keys %{ $totalIncludes{$file} };
     97     print "$file is included $count times, includes $numIncludes files directly, $numTotalIncludes files total.\n"
     98 }
     99 
    100 # Sort most-included files first.
    101 sub mostincludedcmp($$)
    102 {
    103     my ($filea, $fileb) = @_;
    104 
    105     my $counta = $inclusionCounts{$filea} || 0;
    106     my $countb = $inclusionCounts{$fileb} || 0;
    107     return $countb <=> $counta if $counta != $countb;
    108 
    109     my $ta = keys %{ $totalIncludes{$filea} };
    110     my $tb = keys %{ $totalIncludes{$fileb} };
    111     return $ta <=> $tb if $ta != $tb;
    112 
    113     return $filea cmp $fileb;
    114 }
    115