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138 lines
3.7 KiB
Perl
Executable File
138 lines
3.7 KiB
Perl
Executable File
#!/usr/bin/perl -w
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# This Source Code Form is subject to the terms of the Mozilla Public
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# License, v. 2.0. If a copy of the MPL was not distributed with this
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# file, You can obtain one at http://mozilla.org/MPL/2.0/.
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# This script is a bunch of utilities for computing statistics about the textruns
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# created during a Gecko run.
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#
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# Usage:
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# 1) Uncomment #define DUMP_TEXT_RUNS in gfxAtsuiFonts.cpp
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# 2) Build
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# 3) Run over some test set, redirecting stdout to a file
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# 4) Pipe that file through this script
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# --exclude-spaces-only: ignore all textruns that consistent of zero or more
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# spaces
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my $exclude_spaces = grep(/^--exclude-spaces-only$/, @ARGV);
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# --dump-runs: process textruns into a format that can be used by
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# gfxTextRunPerfTest, print that on standard output, and do nothing else
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my $dump_runs = grep(/^--dump-runs$/, @ARGV);
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# --obfuscate: ROTL13 the textrun text
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my $obfuscate = grep(/^--obfuscate$/, @ARGV);
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my @textruns = ();
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while (<STDIN>) {
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if (/^0x(\w+)\((.*)\) TEXTRUN "(.*)" ENDTEXTRUN$/) {
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my %tr = ( fontgroup => $1,
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families => $2,
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text => $3 );
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push(@textruns, \%tr);
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} elsif (/^0x(\w+)\((.*)\) TEXTRUN "(.*)$/) {
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my %tr = ( fontgroup => $1,
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families => $2 );
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my $text = $3."\n";
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while (<STDIN>) {
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if (/^(.*)" ENDTEXTRUN$/) {
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$text .= $1;
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last;
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}
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$text .= $_;
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}
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$tr{text} = $text;
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push(@textruns, \%tr);
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}
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}
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my %quote = ( "\\" => 1, "\"" => 1 );
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sub quote_str {
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my ($text) = @_;
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my @chars = split(//, $text);
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my @strs = ();
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foreach my $c (@chars) {
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if (ord($c) >= 0x80) {
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$c = "\\x".sprintf("%x",ord($c)).'""';
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} elsif ($quote{$c}) {
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$c = "\\$c";
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} elsif ($c eq "\n") {
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$c = " ";
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}
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push(@strs, $c);
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}
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return '"'.join("", @strs).'"';
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}
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if ($dump_runs) {
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foreach my $tr (@textruns) {
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print "{ ", "e_str($tr->{families}), ",\n";
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my $text = $tr->{text};
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if ($obfuscate) {
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$text =~ tr/a-mA-Mn-zN-Z/n-zN-Za-mA-M/;
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}
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print " ", "e_str($text), " },\n";
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}
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exit(0);
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}
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my %trs_by_text = ();
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my %trs_by_text_and_fontgroup = ();
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my %trs_by_trimmed_text_and_fontgroup = ();
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my @tr_lengths = ();
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$trs_by_text{" "} = [];
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$trs_by_text{""} = [];
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sub trim {
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my ($s) = @_;
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$s =~ s/^ *//g;
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$s =~ s/ *$//g;
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return $s;
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}
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my $total_textruns = 0;
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foreach my $tr (@textruns) {
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if ($exclude_spaces && $tr->{text} =~ /^ *$/) {
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next;
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}
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++$total_textruns;
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push(@{$trs_by_text{$tr->{text}}}, $tr);
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push(@{$trs_by_text_and_fontgroup{$tr->{fontgroup}.$tr->{text}}}, $tr);
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push(@{$trs_by_trimmed_text_and_fontgroup{$tr->{fontgroup}.&trim($tr->{text})}}, $tr);
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if (1 < scalar(@{$trs_by_trimmed_text_and_fontgroup{$tr->{fontgroup}.&trim($tr->{text})}})) {
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$tr_lengths[length($tr->{text})]++;
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}
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}
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print "Number of textruns:\t$total_textruns\n";
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print "Number of textruns which are one space:\t", scalar(@{$trs_by_text{" "}}), "\n";
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print "Number of textruns which are empty:\t", scalar(@{$trs_by_text{""}}), "\n";
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my $count = 0;
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foreach my $k (keys(%trs_by_text)) {
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if ($k =~ /^ *$/) {
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$count += @{$trs_by_text{$k}};
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}
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}
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print "Number of textruns which are zero or more spaces:\t$count\n";
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print "Number of unique textruns by text and fontgroup:\t", scalar(keys(%trs_by_text_and_fontgroup)), "\n";
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print "Number of unique textruns by trimmed text and fontgroup:\t", scalar(keys(%trs_by_trimmed_text_and_fontgroup)), "\n";
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my $sum = 0;
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my $weighted_sum = 0;
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if (1) {
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print "Textrun length distribution:\n";
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for my $i (0..(scalar(@tr_lengths)-1)) {
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my $amount = defined($tr_lengths[$i])?$tr_lengths[$i]:0;
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$sum += $amount;
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$weighted_sum += $i*$amount;
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print "$i\t$sum\t$weighted_sum\n";
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}
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}
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